/* Variables CSS para temas */
:root {
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    --layer-base: #f8fafc;
    --layer-surface: #ffffff;
    --layer-elevated: #f1f5f9;
    --table-row-border: #e5e7eb;

    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: #eef2ff;
    --secondary-color: #64748b;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    --border-radius: 16px;
    --border-radius-sm: 10px;
    --border-radius-lg: 24px;
    
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Deep Night — capas (Layering) */
[data-theme="dark"] {
    --layer-base: #0B0E14;
    --layer-surface: #151921;
    --layer-elevated: #1E293B;
    --table-row-border: #1E293B;

    --bg-primary: var(--layer-surface);
    --bg-secondary: var(--layer-surface);
    --bg-tertiary: var(--layer-elevated);
    --text-primary: #E2E8F0;
    --text-secondary: #94A3B8;
    --text-muted: #64748b;

    --border-color: rgba(30, 41, 59, 0.9);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.45);
    --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 14px 40px rgba(0, 0, 0, 0.55);
}

[data-theme="dark"] body {
    background: var(--layer-base) !important;
    color: var(--text-primary);
}

[data-theme="dark"] .dynamic-bg .blob {
    opacity: 0.18;
}

[data-theme="dark"] .app-navbar {
    background: rgba(21, 25, 33, 0.92);
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .auth-card,
[data-theme="dark"] .progresos-card,
[data-theme="dark"] .chart-card,
[data-theme="dark"] .admin-header,
[data-theme="dark"] .stat-card,
[data-theme="dark"] .modal,
[data-theme="dark"] .modal-content,
[data-theme="dark"] .explanation-content {
    background: var(--layer-surface);
    border-color: var(--border-color);
}

[data-theme="dark"] .modal-body,
[data-theme="dark"] .modal-header {
    color: var(--text-primary);
}

[data-theme="dark"] .admin-sidebar,
[data-theme="dark"] .app-sidebar {
    background: rgba(21, 25, 33, 0.92);
    border-right-color: var(--border-color);
}

[data-theme="dark"] input,
[data-theme="dark"] select,
[data-theme="dark"] textarea {
    background: var(--layer-elevated);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .btn-primary {
    color: #E2E8F0;
}

[data-theme="dark"] .btn-secondary {
    background: var(--layer-elevated);
    color: var(--text-primary);
    border-color: var(--border-color);
}

/* Reset y estilos base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    color: var(--text-primary);
    min-height: 100vh;
    transition: var(--transition);
    overflow-x: hidden;
    position: relative;
    line-height: 1.6;
}

.app-navbar {
    height: 60px;
    padding: 0 5%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.logo h1 {
    font-size: 1.5rem !important;
}

main {
    margin-top: 60px;
    padding: 1.5rem 5%;
}

/* Solo lectores de pantalla (título de marca cuando el logo es imagen) */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}


/* Fondo dinámico: blobs y símbolos (parallax sutil, solo transform para bajo uso de CPU) */
.dynamic-bg {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
    will-change: contents;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.4;
    will-change: transform;
    transform: translateZ(0);
}

.blob-1 {
    width:  min(80vw, 500px);
    height: min(80vw, 500px);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.25), rgba(139, 92, 246, 0.2));
    top: -10%;
    left: -5%;
    animation: blobFloat1 22s ease-in-out infinite;
}

.blob-2 {
    width:  min(60vw, 400px);
    height: min(60vw, 400px);
    background: linear-gradient(135deg, rgba(0, 206, 209, 0.2), rgba(16, 185, 129, 0.2));
    bottom: -10%;
    right: -5%;
    animation: blobFloat2 26s ease-in-out infinite;
    animation-delay: -7s;
}

.blob-3 {
    width:  min(50vw, 320px);
    height: min(50vw, 320px);
    background: linear-gradient(135deg, rgba(255, 140, 0, 0.15), rgba(236, 72, 153, 0.15));
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: blobFloat3 24s ease-in-out infinite;
    animation-delay: -14s;
}

@keyframes blobFloat1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(25px, -25px) scale(1.04); }
    66% { transform: translate(-15px, 15px) scale(0.97); }
}

@keyframes blobFloat2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-20px, -20px) scale(1.03); }
}

@keyframes blobFloat3 {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    33% { transform: translate(calc(-50% + 12px), calc(-50% - 12px)) scale(1.02); }
    66% { transform: translate(calc(-50% - 8px), calc(-50% + 8px)) scale(0.98); }
}

.floating-symbols {
    position: absolute;
    inset: 0;
    font-size: clamp(1.5rem, 4vw, 3rem);
    opacity: 0.05;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-around;
    gap: 10%;
    padding: 10%;
}

.floating-symbols span {
    will-change: transform;
    transform: translateZ(0);
    animation: symbolFloat 18s ease-in-out infinite;
}

.floating-symbols span:nth-child(odd) { animation-delay: -2s; animation-duration: 16s; }
.floating-symbols span:nth-child(3n) { animation-delay: -5s; animation-duration: 20s; }
.floating-symbols span:nth-child(5n) { animation-delay: -8s; animation-duration: 14s; }

@keyframes symbolFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(4deg); }
}

/* Navbar superior */
.app-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0 2rem;
    z-index: 100;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.navbar-start {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    min-width: 0;
}

.navbar-nav-context {
    display: flex;
    align-items: center;
    gap: 0.2rem;
}

.navbar-icon-only-btn {
    width: 40px;
    height: 40px;
    padding: 0;
    justify-content: center;
    flex-shrink: 0;
    border-radius: 10px;
    color: var(--text-secondary);
}

.navbar-icon-only-btn:hover {
    color: var(--primary-color);
    background: var(--bg-tertiary);
}

[data-theme="dark"] .navbar-icon-only-btn:hover {
    color: #c4b5fd;
    background: rgba(30, 41, 59, 0.85);
}

[data-theme="dark"] .app-navbar {
    background: rgba(31, 41, 55, 0.9);
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.25rem;
}

.brand-logo-img {
    display: block;
    object-fit: contain;
    flex-shrink: 0;
}

.brand-logo-img--navbar {
    height: 40px;
    width: auto;
    max-width: min(52vw, 220px);
    filter: drop-shadow(0 1px 3px rgba(0, 0, 0, 0.12));
}

[data-theme="dark"] .brand-logo-img--navbar {
    filter: drop-shadow(0 1px 5px rgba(0, 0, 0, 0.45));
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-user-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.4rem 1rem;
    border-radius: var(--border-radius-sm);
    background: var(--primary-light);
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary-color);
    border: 1px solid rgba(99, 102, 241, 0.1);
    cursor: pointer;
    transition: var(--transition-fast);
}

.navbar-user:hover {
    background: var(--primary-color);
    color: white;
}

.navbar-user-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    object-fit: cover;
    display: block;
}

.navbar-user:hover {
    background: var(--border-color);
}

.navbar-user-chevron {
    font-size: 0.65rem;
    opacity: 0.8;
    transition: transform 0.2s ease;
}

.navbar-user-wrap.navbar-user-dropdown-open .navbar-user-chevron {
    transform: rotate(180deg);
}

.navbar-user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.25rem;
    min-width: 160px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-lg);
    z-index: 200;
    padding: 0.25rem 0;
}

.navbar-dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.5rem 1rem;
    border: none;
    background: none;
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    text-align: left;
    transition: var(--transition-fast);
}

.navbar-dropdown-item:hover {
    background: var(--bg-tertiary);
    color: var(--error-color);
}

.navbar-user-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #22c55e;
    box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.3);
    flex-shrink: 0;
    animation: onlinePulse 2s ease-in-out infinite;
}

@keyframes onlinePulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.3); }
    50% { opacity: 0.85; box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.2); }
}

.navbar-user-name {
    max-width: 140px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.navbar-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--border-radius-sm);
    background: transparent;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.navbar-btn:hover {
    background: var(--bg-tertiary);
    color: var(--primary-color);
}

.theme-toggle-btn {
    width: 40px;
    padding: 0.5rem;
    justify-content: center;
}

/* Sidebar condicional (solo autenticados) */
:root {
    --sidebar-collapsed-w: 5rem;   /* w-20 */
    --sidebar-expanded-w: 16rem;   /* w-64 */
}

/* Sidebar Admin */
.admin-sidebar {
    position: fixed;
    top: 56px;
    left: 0;
    width: 16rem;
    height: calc(100vh - 56px);
    background: rgba(255, 255, 255, 0.72);
    border-right: 1px solid rgba(148, 163, 184, 0.35);
    backdrop-filter: blur(12px);
    z-index: 90;
    padding: 1rem 0.9rem;
    overflow-y: auto;
}

[data-theme="dark"] .admin-sidebar {
    background: rgba(17, 24, 39, 0.76);
    border-right-color: rgba(71, 85, 105, 0.5);
}

.admin-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 2rem;
    margin-bottom: 0.75rem;
}

.admin-sidebar-header h3 {
    font-size: 0.95rem;
    color: var(--text-primary);
    white-space: nowrap;
}

.admin-sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.admin-sidebar-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    border: 1px solid transparent;
    border-radius: var(--border-radius-sm);
    background: transparent;
    color: var(--text-secondary);
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: var(--font-heading);
    font-weight: 600;
    text-align: left;
}

.admin-sidebar-item i {
    color: #7c3aed;
    filter: drop-shadow(0 2px 4px rgba(124, 58, 237, 0.3));
    width: 1.2rem;
    text-align: center;
}

.admin-sidebar-item:hover {
    background: rgba(99, 102, 241, 0.12);
    border-color: rgba(99, 102, 241, 0.25);
}

.admin-sidebar-item-active {
    background: rgba(124, 58, 237, 0.14);
    border-color: rgba(124, 58, 237, 0.35);
}

.admin-sidebar-footer {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.admin-export-btn {
    width: 100%;
    display: inline-flex;
    justify-content: center;
    gap: 0.6rem;
}

/* Ajuste de layout para Admin con sidebar fija */
#admin-panel .container {
    margin: 0 0 0 16rem;
    max-width: calc(1200px + 16rem);
    align-items: flex-start;
}

/* Dashboard Global */
.dashboard-global .admin-tab-desc {
    margin: 0 0 1rem 0;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.dashboard-charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1rem;
}

.chart-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem;
}

.chart-card h3 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

/* Tablas estilo DataTables (sin dependencia) */
.admin-data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.admin-data-table thead th {
    text-align: left;
    padding: 0.75rem 0.85rem;
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--table-row-border);
}

[data-theme="dark"] .admin-data-table thead th {
    background: rgba(30, 41, 59, 0.35);
}

.admin-data-table.admin-dense-table tbody td,
.admin-data-table.admin-dense-table thead th {
    height: 48px;
    padding: 0 0.75rem;
    box-sizing: border-box;
    font-size: 0.875rem;
}

.admin-data-table tbody td {
    padding: 0.75rem 0.85rem;
    border-bottom: 1px solid var(--table-row-border);
    vertical-align: middle;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.admin-data-table tbody tr:nth-child(even) td {
    background: rgba(99, 102, 241, 0.05);
}

.admin-data-table tbody tr:hover td {
    background: rgba(124, 58, 237, 0.12);
}

.admin-data-table tbody tr:last-child td {
    border-bottom: none;
}

.td-truncate {
    max-width: 26rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 600;
}

.users-avatar-cell img {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid rgba(148, 163, 184, 0.35);
}

/* Mini acciones en tabla */
.table-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.35rem;
}

/* Inputs de filtro admin */
.admin-actions .search-filter-bar {
    width: 100%;
}

.categories-section-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.65rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.categories-section-title i {
    color: #7c3aed;
}

/* Login: selector de rol (segmented control deslizante) */
.role-segment-wrap {
    margin-top: 0.35rem;
}

.role-segment {
    position: relative;
    display: flex;
    gap: 4px;
    padding: 4px;
    border-radius: 12px;
    background: var(--layer-elevated);
}

[data-theme="dark"] .role-segment {
    background: #1E293B;
}

.role-segment-indicator {
    position: absolute;
    top: 4px;
    left: 4px;
    width: calc(50% - 6px);
    height: calc(100% - 8px);
    border-radius: 10px;
    background: linear-gradient(135deg, #7c3aed, #a78bfa);
    box-shadow: 0 0 22px rgba(124, 58, 237, 0.55);
    z-index: 0;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.role-segment.is-profesor .role-segment-indicator {
    transform: translateX(calc(100% + 4px));
}

.role-segment-btn {
    position: relative;
    z-index: 1;
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 0.65rem 0.5rem;
    border: none;
    border-radius: 10px;
    background: transparent;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: color 0.2s ease;
}

.role-segment-btn.active {
    color: #E2E8F0;
}

[data-theme="light"] .role-segment-btn {
    color: #64748b;
}

[data-theme="light"] .role-segment-btn.active {
    color: #f8fafc;
}

.role-segment-icon {
    width: 1.15rem;
    height: 1.15rem;
    flex-shrink: 0;
}

.app-sidebar {
    position: fixed;
    top: 56px;
    left: 0;
    width: var(--sidebar-collapsed-w);
    height: calc(100vh - 56px);
    background: rgba(255, 255, 255, 0.72);
    border-right: 1px solid rgba(148, 163, 184, 0.35);
    backdrop-filter: blur(12px);
    z-index: 95;
    padding: 0.9rem 0.75rem;
    overflow-y: auto;
    transition: width 0.3s ease;
}

[data-theme="dark"] .app-sidebar {
    background: rgba(17, 24, 39, 0.76);
    border-right-color: rgba(71, 85, 105, 0.5);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 2rem;
    margin-bottom: 0.75rem;
}

.sidebar-header h3 {
    font-size: 0.95rem;
    color: var(--text-primary);
    white-space: nowrap;
}

.sidebar-close-btn {
    padding: 0.3rem 0.4rem;
    display: none;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin-bottom: 0.6rem;
}

.sidebar-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-primary);
    border-radius: 10px;
    padding: 0.55rem 0.65rem;
    cursor: pointer;
    transition: all 0.18s ease;
    font-weight: 500;
}

.sidebar-item i {
    color: #7c3aed;
    filter: drop-shadow(0 2px 4px rgba(124, 58, 237, 0.3));
}

.sidebar-item:hover {
    background: rgba(99, 102, 241, 0.12);
    border-color: rgba(99, 102, 241, 0.25);
}

.sidebar-divider {
    border-top: 1px solid var(--border-color);
    margin: 0.65rem 0 0.4rem;
}

.btn-small {
    font-size: 0.8rem;
    padding: 0.45rem 0.65rem;
}

.sidebar-settings-actions {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-top: 0.5rem;
}

.sidebar-xp-text {
    font-size: 0.82rem;
    color: var(--text-primary);
}

.xp-track {
    width: 100%;
    height: 8px;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.35);
    overflow: hidden;
    margin: 0.4rem 0;
}

.xp-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #7c3aed, #f97316);
    transition: width 0.25s ease;
}

.sidebar-item span,
.sidebar-header h3,
.sidebar-settings-actions .btn-small span,
.sidebar-doc-title span,
.sidebar-prof-toggle span {
    opacity: 0;
    max-width: 0;
    overflow: hidden;
    white-space: nowrap;
    transition: opacity 0.2s ease, max-width 0.2s ease;
}

body.has-sidebar.sidebar-expanded .app-sidebar {
    width: var(--sidebar-expanded-w);
}

body.has-sidebar.sidebar-expanded .sidebar-item,
body.sidebar-open .sidebar-item {
    justify-content: flex-start;
}

body.has-sidebar.sidebar-expanded .sidebar-item span,
body.has-sidebar.sidebar-expanded .sidebar-header h3,
body.has-sidebar.sidebar-expanded .sidebar-settings-actions .btn-small span,
body.has-sidebar.sidebar-expanded .sidebar-doc-title span,
body.has-sidebar.sidebar-expanded .sidebar-prof-toggle span,
body.sidebar-open .sidebar-item span,
body.sidebar-open .sidebar-header h3,
body.sidebar-open .sidebar-settings-actions .btn-small span,
body.sidebar-open .sidebar-doc-title span,
body.sidebar-open .sidebar-prof-toggle span {
    opacity: 1;
    max-width: 200px;
}

/* Gestión Docente (Profesor) */
.sidebar-doc-section {
    position: sticky;
    bottom: 1rem;
    margin-top: 0.9rem;
    padding: 0.7rem 0.65rem;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.35);
    backdrop-filter: blur(10px);
    z-index: 2;
}

[data-theme="dark"] .sidebar-doc-section {
    background: rgba(15, 23, 42, 0.6);
}

.sidebar-doc-title {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.6rem;
}

.sidebar-doc-actions {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.sidebar-doc-spacer {
    height: 0.25rem;
}

.sidebar-prof-toggle {
    width: 100%;
    margin-top: 0.6rem;
    justify-content: center;
    position: sticky;
    bottom: 0.6rem;
    z-index: 3;
}

/* Filtro de estadísticas del profesor */
.profesor-stats-filter-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.75rem 0;
}

.profesor-stats-filter-row label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9rem;
    white-space: nowrap;
}

#filter-profesor-asignatura {
    flex: 1;
    padding: 0.6rem 0.8rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-primary);
}

[data-theme="dark"] #filter-profesor-asignatura {
    background: rgba(17, 24, 39, 0.65);
}

/* Evita solape del contenido cuando sidebar está activa */
body.has-sidebar .container.inicio-container,
body.has-sidebar .screen .container:not(.inicio-container):not(.game-container),
body.has-sidebar .container.game-container {
    margin-left: calc(var(--sidebar-collapsed-w) + 1rem);
    width: calc(100% - (var(--sidebar-collapsed-w) + 1rem));
    max-width: none;
    transition: margin-left 0.3s ease, width 0.3s ease;
}

body.has-sidebar.sidebar-expanded .container.inicio-container,
body.has-sidebar.sidebar-expanded .screen .container:not(.inicio-container):not(.game-container),
body.has-sidebar.sidebar-expanded .container.game-container {
    margin-left: calc(var(--sidebar-expanded-w) + 1rem);
    width: calc(100% - (var(--sidebar-expanded-w) + 1rem));
}

.sidebar-toggle-btn {
    display: none;
}

@media (max-width: 1024px) {
    body.has-sidebar .container.inicio-container,
    body.has-sidebar .screen .container:not(.inicio-container):not(.game-container),
    body.has-sidebar .container.game-container,
    body.has-sidebar.sidebar-expanded .container.inicio-container,
    body.has-sidebar.sidebar-expanded .screen .container:not(.inicio-container):not(.game-container),
    body.has-sidebar.sidebar-expanded .container.game-container {
        margin-left: 0;
        width: 100%;
    }

    .app-sidebar {
        width: var(--sidebar-expanded-w);
        transform: translateX(-100%);
        transition: transform 0.25s ease;
    }

    body.sidebar-open .app-sidebar {
        transform: translateX(0);
    }

    .sidebar-toggle-btn {
        display: inline-flex !important;
    }

    .sidebar-close-btn {
        display: inline-flex;
        margin-left: auto;
    }
}

/* Contenedor principal */
.container {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.container.inicio-container {
    padding-top: calc(56px + 2rem);
    padding-bottom: 1rem;
    align-items: stretch;
    justify-content: flex-start;
}

/* Inicio: dos columnas (marca | acción) en escritorio; una columna en móvil */
.inicio-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: stretch;
    width: 100%;
    flex: 1 1 auto;
    min-height: min(78vh, 720px);
}

.inicio-split-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem 1.5rem;
    border-right: 1px solid var(--border-color);
    min-height: min(70vh, 680px);
}

[data-theme="dark"] .inicio-split-brand {
    border-right-color: rgba(51, 65, 85, 0.75);
}

.inicio-brand-stack {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 1.25rem;
    max-width: 100%;
}

.inicio-tagline {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin: 0;
    max-width: 22rem;
    line-height: 1.45;
}

.inicio-split-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem 0.5rem;
    width: 100%;
    min-width: 0;
}

.inicio-split-action .mode-selector {
    width: 100%;
    max-width: 420px;
    margin-bottom: 1.5rem;
}

.inicio-split-action .join-by-code-section {
    width: 100%;
    max-width: 420px;
}

.inicio-split-action .menu-buttons-home {
    width: 100%;
    max-width: 420px;
}

@media (max-width: 900px) {
    .inicio-split {
        grid-template-columns: 1fr;
        gap: 2rem;
        min-height: auto;
    }

    .inicio-split-brand {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: 1.75rem;
        min-height: auto;
    }

    .inicio-brand-stack .brand-logo-img--hero {
        max-height: min(36vh, 280px);
        max-width: min(90vw, 420px);
    }

    [data-theme="dark"] .inicio-split-brand {
        border-bottom-color: rgba(51, 65, 85, 0.75);
    }

    .inicio-split-action {
        padding-top: 0;
    }
}

.screen .container:not(.inicio-container):not(.game-container):not(.container-categorias-layout) {
    padding-top: calc(56px + 1.5rem);
}

.game-container {
    /* Layout inmersivo: full-screen, dos columnas (juego + ranking) */
    max-width: none;
    padding: calc(56px + 1rem) 2.5rem 2.5rem;
    min-height: 100vh;
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.6fr);
    gap: 2rem;
}

.game-main {
    min-width: 0;
}

@media (max-width: 900px) {
    .game-container {
        grid-template-columns: minmax(0, 1fr);
        padding: calc(56px + 0.75rem) 1rem 1.5rem;
    }
    .game-sidebar {
        display: none;
    }
}

/* Cabecera inmersiva */
.game-header-immersive {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.75rem;
    gap: 1.5rem;
}

.game-progress-row {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.game-header-text {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 0.75rem;
    align-items: baseline;
}

.game-category-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1.05rem;
}

.game-question-counter {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.game-header-right {
    display: flex;
    gap: 1rem;
}

.game-header-stat {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.9rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(148, 163, 184, 0.5);
    backdrop-filter: blur(12px);
}

.game-audio-toggle {
    width: 44px;
    height: 44px;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.5);
    background: rgba(255, 255, 255, 0.92);
    color: var(--primary-color);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.game-audio-toggle:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 18px rgba(79, 70, 229, 0.2);
}

.game-audio-toggle:active {
    transform: scale(0.96);
}

.game-audio-toggle[aria-pressed="false"] {
    color: #64748b;
    background: rgba(241, 245, 249, 0.95);
}

[data-theme="dark"] .game-header-stat {
    background: #151921;
    border: 1px solid #1e293b;
}

[data-theme="dark"] .game-audio-toggle {
    background: #151921;
    border-color: #1e293b;
    color: #a78bfa;
}

[data-theme="dark"] .game-audio-toggle[aria-pressed="false"] {
    color: #64748b;
}

.game-header-icon {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
}

.game-header-values .label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
}

.game-header-values .value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* --- CATEGORÍAS OPTIMIZADAS --- */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
    padding: 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

.category-card {
    position: relative;
    background: var(--layer-surface);
    border-radius: 1.5rem;
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.category-card:hover {
    transform: translateY(-5px);
    border-color: var(--category-color);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.2),
                0 0 15px -3px var(--category-color); /* Glow muy sutil */
}

.category-card-inner i {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--category-color), #fff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.category-card-inner h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.category-stats-mini {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.category-progress-mini {
    height: 4px;
    background: rgba(0,0,0,0.1);
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar-inner {
    height: 100%;
    background: var(--category-color);
    border-radius: 2px;
}

/* Brillo en Ruleta (Suavizado) */
.ruleta-active {
    border-color: white !important;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.3) !important;
    transform: scale(1.02);
}

.ruleta-winner {
    border-color: var(--category-color) !important;
    box-shadow: 0 0 30px var(--category-color) !important;
    transform: scale(1.05);
    z-index: 10;
}

/* --- FEEDBACK MODERNO (OVERLAY) --- */
.feedback-overlay {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.5);
    z-index: 9999;
    pointer-events: none;
    opacity: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.feedback-overlay.active {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.feedback-icon {
    font-size: 6rem;
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 20px rgba(0,0,0,0.2));
}

.feedback-text {
    font-size: 2.5rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.feedback-correct { color: #10b981; }
.feedback-incorrect { color: #ef4444; }

.flash-screen {
    position: fixed;
    inset: 0;
    z-index: 9998;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.flash-correct { background: radial-gradient(circle, rgba(16, 185, 129, 0.15) 0%, transparent 70%); }
.flash-incorrect { background: radial-gradient(circle, rgba(239, 68, 68, 0.15) 0%, transparent 70%); }

.timer-icon {
    width: 32px;
    height: 32px;
}

.timer-ring {
    position: absolute;
    width: 32px;
    height: 32px;
    transform: rotate(-90deg);
}

.timer-ring-bg {
    fill: none;
    stroke: rgba(148, 163, 184, 0.35);
    stroke-width: 3;
}

.timer-ring-fg {
    fill: none;
    stroke: var(--accent-color);
    stroke-width: 3;
    stroke-linecap: round;
    stroke-dasharray: 97;
    stroke-dashoffset: 0;
    transition: stroke-dashoffset 0.25s linear;
}

/* Panel lateral de competitividad */
.game-sidebar {
    align-self: stretch;
    padding: 1.5rem 1.25rem;
    border-radius: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(24px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.sidebar-user-highlight {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(236, 72, 153, 0.15));
    border-radius: 1.25rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-avatar-img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 2px solid white;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.sidebar-user-details {
    display: flex;
    flex-direction: column;
}

.sidebar-user-name {
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-primary);
}

.sidebar-user-rank {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

[data-theme="dark"] .game-sidebar {
    background: rgba(15, 25, 41, 0.7);
    border-color: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .game-container {
    background: transparent;
}

[data-theme="dark"] .screen {
    background: #0b0e14;
}

.sidebar-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 0.85rem;
}

.sidebar-ranking-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.sidebar-ranking-item {
    display: grid;
    grid-template-columns: 1.2rem 1fr auto;
    gap: 0.5rem;
    align-items: center;
    padding: 0.4rem 0.5rem;
    border-radius: 0.9rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.sidebar-ranking-item.is-me {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.12), rgba(236, 72, 153, 0.12));
    color: var(--text-primary);
    font-weight: 600;
}

.sidebar-ranking-item .pos {
    font-weight: 700;
    color: var(--primary-color);
}

.sidebar-ranking-item .score {
    font-variant-numeric: tabular-nums;
}

/* Pantallas */
.screen {
    display: none;
    width: 100%;
    min-height: 100vh;
}

.screen.active {
    display: block;
    animation: screenFadeIn 0.2s ease forwards;
}

@keyframes screenFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Presión en botones (micro-interacción) */
button:active,
.btn-primary:active,
.btn-secondary:active,
.btn-link:active,
.role-segment-btn:active,
.admin-sidebar-item:active {
    transform: scale(0.95);
}

button,
.btn-primary,
.btn-secondary {
    transition: transform 0.15s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

/* Pantalla de inicio */
.logo {
    text-align: center;
    margin-bottom: 3rem;
}

.inicio-brand-stack .brand-logo-img--hero {
    width: auto;
    height: auto;
    max-width: min(94%, 640px);
    max-height: min(62vh, 560px);
    margin: 0;
    display: block;
    object-fit: contain;
    filter: drop-shadow(0 8px 22px rgba(124, 58, 237, 0.2));
}

[data-theme="dark"] .inicio-brand-stack .brand-logo-img--hero {
    filter: drop-shadow(0 6px 20px rgba(0, 0, 0, 0.45));
}

/* Respiración suave: solo transform + opacity (compositor/GPU) */
@keyframes brandLogoBreathe {
    0%, 100% {
        transform: translateZ(0) scale(1) rotate(0deg);
        opacity: 1;
    }
    50% {
        transform: translateZ(0) scale(1.01) rotate(0.22deg);
        opacity: 0.992;
    }
}

/* Logo grande: ciclo más lento y amplitud mínima (menos fatiga visual) */
.brand-logo-breathe {
    animation: brandLogoBreathe 9.5s cubic-bezier(0.42, 0, 0.58, 1) infinite;
    transform-origin: center center;
}

@media (prefers-reduced-motion: reduce) {
    .brand-logo-breathe {
        animation: none;
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

.logo h1,
.logo .logo-brand-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1.15;
}

/* Título con onda suave por carácter (cada ~3 s) */
.logo .logo-brand-title .logo-wave-char {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
    animation: logoTitleSoftWave 3s ease-in-out infinite;
    animation-delay: calc(var(--w, 0) * 0.05s);
}

@keyframes logoTitleSoftWave {
    0%, 86%, 100% {
        transform: translateY(0);
    }
    90% {
        transform: translateY(-0.14em);
    }
    93% {
        transform: translateY(0);
    }
}

.logo p {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

/* --- ESTILOS DE JUEGO GAMIFICADOS (Kahoot Style) --- */

.question-card {
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    padding: 0 !important;
    width: 100%;
}

.question {
    font-size: clamp(1.5rem, 4vw, 2.25rem) !important;
    font-weight: 800 !important;
    text-align: center;
    color: var(--text-primary);
    line-height: 1.2;
    padding: 2rem;
    background: var(--bg-primary);
    border-radius: 2rem;
    box-shadow: var(--shadow-lg);
    animation: questionAppear 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
    position: relative;
    overflow: hidden;
}

@keyframes questionAppear {
    from { opacity: 0; transform: translateY(-20px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.options {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 1.25rem !important;
    width: 100%;
}

@media (max-width: 600px) {
    .options {
        grid-template-columns: 1fr !important;
    }
}

.option-btn {
    position: relative;
    min-height: 120px;
    padding: 1.5rem 2rem 1.5rem 4rem !important;
    font-size: 1.25rem !important;
    font-weight: 700 !important;
    border: none !important;
    border-radius: 1.5rem !important;
    color: white !important;
    text-align: left !important;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275) !important;
    box-shadow: 0 6px 0 rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    transform: translateZ(0);
}

.option-btn::before {
    content: '';
    position: absolute;
    left: 1.25rem;
    width: 32px;
    height: 32px;
    background-size: contain;
    background-repeat: no-repeat;
    opacity: 0.9;
}

/* Colores vibrantes Kahoot con códigos Unicode seguros */
.option-0 { background: #e21b3c !important; } /* Rojo - Triángulo */
.option-0::before { content: '\25B2'; font-size: 24px; display: flex; align-items: center; justify-content: center; }

.option-1 { background: #1368ce !important; } /* Azul - Rombo */
.option-1::before { content: '\25C6'; font-size: 24px; display: flex; align-items: center; justify-content: center; }

.option-2 { background: #d89e00 !important; } /* Amarillo - Círculo */
.option-2::before { content: '\25CF'; font-size: 24px; display: flex; align-items: center; justify-content: center; }

.option-3 { background: #26890c !important; } /* Verde - Cuadrado */
.option-3::before { content: '\25A0'; font-size: 24px; display: flex; align-items: center; justify-content: center; }

.option-4 { background: #8119b7 !important; } /* Púrpura */
.option-5 { background: #da5b00 !important; } /* Naranja */

.option-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 0 rgba(0, 0, 0, 0.2);
    filter: brightness(1.1);
}

.option-btn:active {
    transform: translateY(2px);
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.2);
}

.option-btn.answer-correct {
    background: #10b981 !important;
    box-shadow: 0 4px 0 #064e3b, 0 0 20px rgba(16, 185, 129, 0.6);
    transform: scale(1.05);
    z-index: 10;
}

.option-btn.answer-incorrect {
    background: #ef4444 !important;
    box-shadow: 0 4px 0 #7f1d1d;
    opacity: 0.7;
    transform: scale(0.95);
}

/* Mejoras en el Header de Juego */
.game-header-immersive {
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 2rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-md);
}

.game-progress-track {
    height: 12px !important;
    border-radius: 999px !important;
    background: rgba(0, 0, 0, 0.1) !important;
    overflow: hidden;
}

.game-progress-fill {
    background: linear-gradient(90deg, #6366f1, #a855f7) !important;
    box-shadow: 0 0 10px rgba(168, 85, 247, 0.5);
    border-radius: 999px;
}

.game-accuracy-track {
    height: 6px !important;
}

.mode-selector {
    margin-bottom: 2rem;
    width: 100%;
    max-width: 720px;
}

.mode-selector h3 {
    text-align: center;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.mode-cards {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.mode-card {
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1rem 1.2rem;
    background: var(--bg-secondary);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.mode-card .mode-label {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.15rem;
}

.mode-card .mode-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.mode-card .mode-tag {
    font-size: 0.8rem;
    color: var(--primary-color);
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.mode-card.active {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.08), rgba(79, 70, 229, 0.02));
    box-shadow: var(--shadow-md);
}

/* Modo oscuro: tarjeta seleccionada con borde brillante y fondo un poco más claro */
[data-theme="dark"] .mode-card {
    background: #151921;
    border-color: #1e293b;
}

[data-theme="dark"] .mode-card .mode-label {
    color: #f3f4f6;
}

[data-theme="dark"] .mode-card .mode-description {
    color: #f3f4f6; /* pedido: descripción blanca */
    opacity: 0.95;
}

[data-theme="dark"] .mode-card.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.22), rgba(15, 23, 42, 0.72));
    border-color: rgba(168, 85, 247, 0.95);
    box-shadow: 0 0 0 1px rgba(168, 85, 247, 0.55), 0 18px 40px rgba(99, 102, 241, 0.18);
}

[data-theme="dark"] .mode-card.active .mode-tag {
    color: #fde68a;
}

.mode-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

@media (max-width: 768px) {
    .mode-cards {
        grid-template-columns: minmax(0, 1fr);
    }
}

.menu-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
    max-width: 400px;
}

.menu-buttons-home {
    max-width: 420px;
}

.btn-jugar-hero {
    min-height: 80px !important;
    padding: 1.25rem 2.5rem !important;
    font-size: 1.5rem !important;
    background: linear-gradient(120deg, #6366f1, #8b5cf6, #ec4899) !important;
    background-size: 200% 200% !important;
    animation: gradientShift 4s ease infinite;
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4) !important;
}

.btn-jugar-hero:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 12px 32px rgba(99, 102, 241, 0.5) !important;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.app-footer {
    margin-top: auto;
    padding-top: 2rem;
    padding-bottom: 1rem;
}

.footer-admin-link {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    transition: var(--transition);
}

.footer-admin-link:hover {
    color: var(--primary-color);
}

/* Acceso secreto al Admin: icono discreto (solo para quien conozca la ruta) */
.footer-admin-secret {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    opacity: 0.2;
    color: var(--text-muted);
    cursor: pointer;
    transition: opacity 0.2s ease;
    font-size: 10px;
}

.footer-admin-secret:hover {
    opacity: 0.5;
}

/* Unirse con código (Home) */
.join-by-code-section {
    width: 100%;
    max-width: 420px;
    margin-bottom: 1.5rem;
    padding: 1.25rem;
    background: var(--bg-secondary);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.join-by-code-section h3 {
    font-size: 1.1rem;
    margin-bottom: 0.35rem;
    color: var(--text-primary);
}

.join-by-code-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.join-by-code-row {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.access-code-input {
    flex: 1;
    padding: 0.65rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    max-width: 140px;
}

.access-code-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.join-code-message {
    font-size: 0.9rem;
    margin-top: 0.5rem;
    min-height: 1.25em;
}

.join-code-message.error {
    color: var(--error-color);
}

.join-code-message.success {
    color: var(--success-color);
}

/* Tabla de estadísticas del profesor */
.profesor-stats-table-wrap {
    margin-top: 1.5rem;
    width: 100%;
}

.profesor-stats-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.profesor-stats-header-row h4 {
    margin: 0;
    color: var(--text-primary);
}

.btn-download-excel {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, #217346, #185c37);
    color: white;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-download-excel:hover:not(:disabled) {
    background: linear-gradient(135deg, #185c37, #134e2e);
    transform: translateY(-1px);
}

.btn-download-excel:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.profesor-stats-table-wrap h4 {
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.no-stats-msg {
    color: var(--text-secondary);
    font-size: 0.95rem;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
}

.profesor-stats-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.profesor-stats-table th,
.profesor-stats-table td {
    padding: 0.75rem 1rem;
    text-align: left;
}

.profesor-stats-table thead {
    background: var(--bg-tertiary);
}

.profesor-stats-table th {
    font-weight: 600;
    color: var(--text-primary);
}

.profesor-stats-table td {
    color: var(--text-primary);
}

/* Contraste fuerte para tablas en modo oscuro (Mis Resultados usa .profesor-stats-table) */
[data-theme="dark"] .profesor-stats-table {
    background: #111827;
    border-color: #334155;
}

[data-theme="dark"] .profesor-stats-table thead {
    background: #0b1220;
}

[data-theme="dark"] .profesor-stats-table th {
    color: #f3f4f6;
}

[data-theme="dark"] .profesor-stats-table td {
    color: #f3f4f6;
}

[data-theme="dark"] .profesor-stats-table tbody tr {
    background: #111827;
}

[data-theme="dark"] .profesor-stats-table tbody tr:nth-child(even) {
    background: #1f2937; /* pedido: filas en gris muy oscuro */
}

.profesor-stats-table tbody tr:nth-child(even) {
    background: var(--bg-primary);
}

.admin-tab-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.vista-global-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.vista-global-table th,
.vista-global-table td {
    padding: 0.65rem 1rem;
    text-align: left;
}

.vista-global-table thead {
    background: var(--bg-tertiary);
}

.vista-global-table th {
    font-weight: 600;
    color: var(--text-primary);
}

.vista-global-table tbody tr:nth-child(even) {
    background: var(--bg-primary);
}

.vista-global-table code {
    font-size: 0.85em;
    background: var(--bg-tertiary);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
}

.mis-resultados-list {
    width: 100%;
    max-width: 920px;
    margin-left: auto;
    margin-right: auto;
}

.mis-resultados-list .empty-message {
    padding: 2rem;
    text-align: center;
    color: var(--text-secondary);
}

/* Botones */
.btn-primary, .btn-secondary, .btn-link {
    padding: 0.85rem 1.75rem;
    border: none;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    text-decoration: none;
    min-height: 50px;
    letter-spacing: 0.01em;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.35);
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
}

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-link {
    background: transparent;
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    min-height: auto;
}

.btn-link:hover {
    background: var(--primary-light);
    border-radius: var(--border-radius-sm);
}

/* Toggle de tema (ahora en navbar) */
.theme-toggle { display: none; }

/* Formularios (tarjetas centradas con logo) */
.auth-form, .admin-login {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--border-color);
}

.auth-card {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.auth-form-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
}

.auth-form-logo .brand-logo-img--auth {
    height: 2.75rem;
    width: auto;
    max-width: 240px;
    object-fit: contain;
}

.auth-form h2, .admin-login h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Panel de administración */
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    width: 100%;
}

.admin-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    width: 100%;
    overflow-x: auto;
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    background: var(--bg-tertiary);
    border: none;
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tab-btn.active {
    background: var(--primary-color);
    color: white;
}

.tab-btn:hover {
    background: var(--primary-hover);
    color: white;
}

.tab-panel {
    display: none;
    width: 100%;
}

.tab-panel.active {
    display: block;
}

.admin-actions {
    margin-bottom: 2rem;
}

.admin-list {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 1rem;
    border: 1px solid var(--border-color);
}

/* Categorías — rejilla amplia (~3 columnas), tarjetas con jerarquía visual */
.categories-grid, .subcategories-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
    width: 100%;
    margin-bottom: 0;
}

@media (max-width: 960px) {
    .categories-grid, .subcategories-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 520px) {
    .categories-grid, .subcategories-grid {
        grid-template-columns: minmax(0, 1fr);
    }
}

.category-card, .subcategory-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 2rem 1.5rem;
    cursor: pointer;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease, border-color 0.4s ease;
    text-align: center;
    box-shadow: var(--shadow-md);
    perspective: 1000px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.category-card:hover, .subcategory-card:hover {
    transform: translateY(-8px) rotateX(4deg) rotateY(2deg);
    border-color: var(--category-color, var(--primary-color));
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.1),
        0 0 0 1px var(--category-color, var(--primary-color)),
        0 0 25px rgba(99, 102, 241, 0.2);
}

/* Hover: borde y brillo (bloom) acorde al color de la categoría / subcategoría */
.category-card:hover, .subcategory-card:hover {
    position: relative;
    z-index: 2;
    transform: translateY(-3px) scale(1.03);
    border-color: var(--category-color, var(--primary-color));
    box-shadow:
        0 14px 36px rgba(0, 0, 0, 0.12),
        0 0 0 2px var(--category-color, var(--primary-color)),
        0 0 22px 5px var(--category-color, var(--primary-color));
}

@supports (color: color-mix(in srgb, white, black)) {
    .category-card:hover, .subcategory-card:hover {
        box-shadow:
            0 16px 42px rgba(0, 0, 0, 0.14),
            0 0 0 2px var(--category-color, var(--primary-color)),
            0 0 32px 10px color-mix(in srgb, var(--category-color, #7c3aed) 48%, transparent),
            0 0 56px 16px color-mix(in srgb, var(--category-color, #7c3aed) 22%, transparent);
    }

    [data-theme="dark"] .category-card:hover,
    [data-theme="dark"] .subcategory-card:hover {
        box-shadow:
            0 18px 50px rgba(0, 0, 0, 0.58),
            0 0 0 2px var(--category-color, var(--primary-color)),
            0 0 38px 12px color-mix(in srgb, var(--category-color, #a78bfa) 52%, transparent),
            0 0 72px 20px color-mix(in srgb, var(--category-color, #a78bfa) 26%, transparent);
    }

    /* Modo claro: halos de color visibles (misma lógica que oscuro, más contraste sobre fondo claro) */
    [data-theme="light"] .category-card:hover,
    [data-theme="light"] .subcategory-card:hover {
        box-shadow:
            0 14px 36px rgba(15, 23, 42, 0.1),
            0 0 0 2px var(--category-color, var(--primary-color)),
            0 0 36px 12px color-mix(in srgb, var(--category-color, #7c3aed) 58%, transparent),
            0 0 64px 20px color-mix(in srgb, var(--category-color, #7c3aed) 38%, transparent);
    }
}

.category-card i, .subcategory-card i {
    font-size: 2.5rem;
    color: var(--category-color, var(--primary-color));
    margin-bottom: 1rem;
    transition: color 0.25s ease;
}

.category-card h3, .subcategory-card h3 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.category-card p, .subcategory-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.category-stats {
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: var(--category-color, var(--accent-color));
    font-weight: 500;
}

.category-progress-wrap {
    margin-top: 0.75rem;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 999px;
    overflow: hidden;
    position: relative;
}

.category-progress-bar {
    height: 100%;
    background: var(--category-color, var(--primary-color));
    border-radius: 999px;
    transition: width 0.3s ease;
}

.category-progress-pct {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
    display: inline-block;
}

/* Ruleta: iluminar tarjeta durante selección aleatoria */
.category-card.ruleta-active {
    transform: scale(1.05);
    box-shadow: 0 0 0 3px var(--category-color, var(--primary-color)), 0 12px 28px rgba(0, 0, 0, 0.15);
    border-color: var(--category-color, var(--primary-color));
    transition: transform 0.08s ease, box-shadow 0.08s ease, border-color 0.08s ease;
}

.category-card.ruleta-winner {
    transform: scale(1.08);
    box-shadow: 0 0 0 4px var(--category-color, var(--primary-color)), 0 0 28px 4px var(--category-color, var(--primary-color)), 0 16px 40px rgba(0, 0, 0, 0.2);
    border-color: var(--category-color, var(--primary-color));
    animation: ruletaWinnerPulse 0.6s ease infinite alternate;
}

@keyframes ruletaWinnerPulse {
    from { box-shadow: 0 0 0 4px var(--category-color), 0 0 24px 2px var(--category-color), 0 16px 40px rgba(0,0,0,0.2); }
    to { box-shadow: 0 0 0 4px var(--category-color), 0 0 32px 8px var(--category-color), 0 16px 40px rgba(0,0,0,0.2); }
}

/* Juego */
.game-header {
    width: 100%;
    margin-bottom: 1.5rem;
    background: var(--bg-secondary);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.game-header-progress-wrap {
    width: 100%;
    margin-bottom: 0.75rem;
}

.progress-bar-header {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 999px;
    overflow: hidden;
}

.progress-bar-header .progress,
.game-progress-fill,
.game-accuracy-fill {
    width: 0;
    height: 100%;
    border-radius: 999px;
    transition: width 0.4s ease-out, background 0.35s ease, box-shadow 0.35s ease;
}

.game-progress-fill {
    background: linear-gradient(90deg, #22c55e, #7c3aed, #22c55e);
    background-size: 200% 100%;
    box-shadow: 0 0 15px rgba(34, 197, 94, 0.4);
    animation: liquidFlow 3s linear infinite;
    position: relative;
}

.game-progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.3) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    animation: shimmer 2s infinite;
}

@keyframes liquidFlow {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.game-accuracy-fill {
    background: linear-gradient(90deg, #22c55e, #4ade80);
}

.game-dual-progress[data-accuracy-tier="mid"] .game-progress-fill,
.game-dual-progress[data-accuracy-tier="mid"] .game-accuracy-fill {
    background: linear-gradient(90deg, #f59e0b, #f97316);
    box-shadow: 0 0 10px rgba(249, 115, 22, 0.35);
}

.game-dual-progress[data-accuracy-tier="low"] .game-progress-fill,
.game-dual-progress[data-accuracy-tier="low"] .game-accuracy-fill {
    background: linear-gradient(90deg, #ea580c, #ef4444);
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.35);
}

.game-dual-progress[data-accuracy-tier="neutral"] .game-accuracy-fill {
    background: rgba(148, 163, 184, 0.35);
    box-shadow: none;
}

.game-dual-progress {
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
    min-width: min(100%, 420px);
}

.game-advance-line,
.game-accuracy-line {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.game-advance-labels {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.game-advance-title {
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.game-progress-fraction {
    font-variant-numeric: tabular-nums;
    color: var(--text-primary);
}

.game-accuracy-text {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
}

.game-accuracy-track {
    height: 6px;
}

.game-progress-track {
    height: 10px;
}

.game-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.game-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.game-stats {
    display: flex;
    gap: 1.5rem;
}

.game-mode-wrapper {
    flex: 0 0 auto;
    display: flex;
    justify-content: center;
}

.game-mode-badge {
    padding: 0.35rem 0.8rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

.game-mode-badge.clasico {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.game-mode-badge.estudio {
    border-color: var(--success-color);
    color: var(--success-color);
}

.timer, .score {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
}

.timer {
    color: var(--warning-color);
}

.score {
    color: var(--success-color);
}

/* Contenedor de preguntas y opciones (modo juego tipo quiz) */
.question-container.question-card {
    background: transparent;
    box-shadow: none;
    padding: 0;
    width: 100%;
    max-width: none;
    margin: 0;
}

[data-theme="dark"] .question-container.question-card {
    background: #151921;
    border: 1px solid #1e293b;
    border-radius: 16px;
    padding: 1.35rem 1.5rem !important;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
}

.question {
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 4vw, 2.2rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2rem;
    line-height: 1.3;
    text-align: left;
}

.options {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
}

@media (max-width: 768px) {
    .options {
        grid-template-columns: 1fr;
    }
}

/* Animación de entrada para cada tarjeta de opción */
@keyframes slideInOption {
    from {
        opacity: 0;
        transform: translateY(10px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.options .option-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1.5rem 2rem;
    min-height: 120px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
    cursor: pointer;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    color: #ffffff;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition-fast);
    animation: slideInOption 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    position: relative;
    overflow: hidden;
}

.options .option-btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: 0.5s;
}

.options .option-btn:hover::after {
    left: 100%;
}

.options .option-btn:nth-child(1) { background: linear-gradient(135deg, #a78bfa, #7c3aed); } /* Púrpura */
.options .option-btn:nth-child(2) { background: linear-gradient(135deg, #fca5a5, #f97316); } /* Naranja */
.options .option-btn:nth-child(3) { background: linear-gradient(135deg, #86efac, #10b981); } /* Verde */
.options .option-btn:nth-child(4) { background: linear-gradient(135deg, #93c5fd, #3b82f6); } /* Azul */

.options .option-btn:hover:not(:disabled) {
    transform: scale(1.05);
    filter: brightness(1.08);
    box-shadow: 0 14px 34px rgba(15, 23, 42, 0.26);
}

.options .option-btn:active {
    transform: translateY(-1px) scale(0.99);
}

.options .option-btn:disabled {
    cursor: default;
    filter: none;
}

/* Feedback de respuesta: acierto = destello verde, error = shake rojo */
.options .option-btn.answer-correct {
    animation: answerCorrectGlass 0.7s ease-out forwards;
    border-color: #10b981;
    background: linear-gradient(135deg, #065f46, #047857);
    box-shadow: 0 0 0 1px rgba(16, 185, 129, 0.7),
                0 18px 40px rgba(16, 185, 129, 0.35);
    pointer-events: none;
}

@keyframes answerCorrectGlass {
    0%   { transform: scale(1); box-shadow: 0 0 0 rgba(16, 185, 129, 0); }
    35%  { transform: scale(1.08); box-shadow: 0 0 30px 10px rgba(16, 185, 129, 0.6); }
    70%  { transform: scale(0.95); box-shadow: 0 0 10px 2px rgba(16, 185, 129, 0.3); }
    100% { transform: scale(1); box-shadow: 0 0 20px 5px rgba(16, 185, 129, 0.4); }
}

.options .option-btn.answer-incorrect {
    animation: answerIncorrectGlass 0.6s ease forwards;
    border-color: #ef4444;
    background: linear-gradient(135deg, #7f1d1d, #991b1b);
    box-shadow: 0 0 0 1px rgba(248, 113, 113, 0.7),
                0 18px 35px rgba(239, 68, 68, 0.3);
    pointer-events: none;
}

@keyframes answerIncorrectGlass {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-6px); }
    40% { transform: translateX(6px); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(3px); }
}


/* Explicaciones de respuestas */
.answer-explanation {
    padding: 20px;
    background: var(--card-bg);
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
}

.answer-explanation p {
    margin-bottom: 15px;
    line-height: 1.6;
    color: var(--text-color);
}

.answer-explanation strong {
    color: var(--primary-color);
}

/* Badges de dificultad */
.difficulty-badge {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 10px;
}

.difficulty-badge.facil {
    background: linear-gradient(135deg, #20bf6b, #26de81);
    color: white;
}

.difficulty-badge.medio {
    background: linear-gradient(135deg, #fed330, #f7b731);
    color: #333;
}

.difficulty-badge.dificil {
    background: linear-gradient(135deg, #eb3b5a, #ff6b6b);
    color: white;
}

/* Resultados */
.results-header {
    text-align: center;
    margin-bottom: 2rem;
}

.final-score {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 1rem 0;
}

.final-score span:first-child {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.results-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat {
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--border-color);
}

.stat i {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    display: block;
}

.achievements {
    margin-bottom: 2rem;
}

.achievement {
    background: linear-gradient(135deg, var(--accent-color), #fbbf24);
    color: white;
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.results-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

/* Ranking (tabla moderna con medallas top 3) */
.ranking-wrapper {
    width: 100%;
    max-width: 560px;
    background: var(--bg-secondary);
    border-radius: 20px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.ranking-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 1rem;
}

.ranking-table thead {
    background: var(--bg-tertiary);
}

.ranking-table th {
    padding: 1rem 1.25rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
}

.ranking-table th:nth-child(4),
.ranking-table th:nth-child(5) {
    text-align: center;
}

.ranking-table td {
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--border-color);
}

.ranking-table tbody tr:hover {
    background: var(--bg-tertiary);
}

.ranking-col-pos {
    width: 80px;
    font-weight: 700;
}

.ranking-medal {
    display: inline-flex;
    align-items: center;
    margin-right: 0.35rem;
}

.ranking-medal.medal-gold { color: #f59e0b; }
.ranking-medal.medal-silver { color: #94a3b8; }
.ranking-medal.medal-bronze { color: #b45309; }

.ranking-row-top {
    background: linear-gradient(90deg, rgba(245, 158, 11, 0.06), transparent);
}

.ranking-table tbody tr.ranking-row-top:nth-child(2) { background: linear-gradient(90deg, rgba(148, 163, 184, 0.08), transparent); }
.ranking-table tbody tr.ranking-row-top:nth-child(3) { background: linear-gradient(90deg, rgba(180, 83, 9, 0.08), transparent); }

.ranking-col-score {
    font-weight: 600;
    color: var(--success-color);
    text-align: center;
}

.ranking-col-rank {
    text-align: center;
    font-weight: 600;
}

/* Modales */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--layer-surface);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 90%;
    max-height: 85vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    animation: modalSlideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--error-color);
}

.modal-body {
    padding: 1.5rem;
}

/* Notificaciones */
.notifications {
    position: fixed;
    top: 2rem;
    right: 2rem;
    z-index: 1001;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.notification {
    background: var(--layer-surface);
    border-left: 4px solid var(--primary-color);
    border-radius: var(--border-radius-sm);
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideInRight 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    max-width: 350px;
    font-weight: 500;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.notification.success {
    border-left: 4px solid var(--success-color);
}

.notification.error {
    border-left: 4px solid var(--error-color);
}

.notification.warning {
    border-left: 4px solid var(--warning-color);
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    width: 100%;
}

.user-info {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.25rem;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .logo h1,
    .logo .logo-brand-title {
        font-size: 2rem;
    }
    
    .logo i {
        font-size: 3rem;
    }
    
    .menu-buttons {
        max-width: 100%;
    }
    
    .game-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .game-stats {
        justify-content: center;
    }
    
    .results-actions {
        flex-direction: column;
    }
    
    .admin-tabs {
        flex-direction: column;
    }
    
    .theme-toggle {
        top: 1rem;
        right: 1rem;
    }
    
    .notifications {
        right: 1rem;
        left: 1rem;
    }
    
    .notification {
        max-width: none;
    }
}

@media (max-width: 480px) {
    .btn-primary, .btn-secondary, .btn-link {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
    
    .question {
        font-size: 1.1rem;
    }
    
    .final-score {
        font-size: 2rem;
    }
}

/* Animaciones adicionales */
.fade-in {
    animation: fadeIn 0.5s ease;
}

.slide-up {
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.bounce {
    animation: bounce 0.6s ease;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Estados de carga */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

.loading-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    text-align: center;
    color: var(--text-secondary);
}

.loading-indicator i {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.loading-indicator p {
    font-size: 1.1rem;
    margin: 0;
}

/* Modal de explicaciones */
.explanation-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.explanation-content {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: 30px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.explanation-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
}

.explanation-header i {
    font-size: 2rem;
    margin-right: 15px;
}

.explanation-header i.success {
    color: var(--success-color);
}

.explanation-header i.error {
    color: var(--error-color);
}

.explanation-header h3 {
    margin: 0;
    flex: 1;
    font-size: 1.5rem;
}

.explanation-close {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.explanation-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.explanation-text {
    margin-bottom: 25px;
}

.explanation-text p {
    margin: 10px 0;
    line-height: 1.6;
}

.explanation-text strong {
    color: var(--primary-color);
}

.explanation-continue {
    width: 100%;
    padding: 12px 24px;
    font-size: 1.1rem;
}

.explanation-ai-cta {
    margin: 20px 0;
    padding: 16px;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    border: 1px dashed var(--border-color);
    text-align: center;
}

.explanation-ai-cta p {
    margin: 0 0 12px 0;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.btn-ai-chat {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

/* Aviso para no registrados: desbloquear chat con IA */
.explanation-ai-guest-cta {
    margin: 20px 0;
    padding: 20px;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.08), rgba(139, 92, 246, 0.06));
    border-radius: var(--border-radius);
    border: 1px solid rgba(79, 70, 229, 0.2);
    text-align: center;
}
.explanation-ai-guest-cta > i {
    font-size: 1.75rem;
    color: var(--primary-color);
    margin-bottom: 8px;
    display: block;
}
.explanation-ai-guest-cta p {
    margin: 0 0 8px 0;
    font-size: 0.95rem;
    color: var(--text-primary);
}
.explanation-ai-guest-cta p:last-of-type {
    margin-bottom: 14px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}
.explanation-ai-guest-cta .btn-goto-login {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

/* Modal Chat con IA */
.ai-chat-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2100;
    backdrop-filter: blur(4px);
}

.ai-chat-modal {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    width: 95%;
    max-width: 520px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.ai-chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.ai-chat-header h3 {
    margin: 0;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.ai-chat-close {
    background: none;
    border: none;
    font-size: 1.75rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
    line-height: 1;
    transition: color 0.2s;
}

.ai-chat-close:hover {
    color: var(--text-primary);
}

.ai-chat-context {
    padding: 12px 20px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    max-height: 120px;
    overflow-y: auto;
}

.ai-chat-context p {
    margin: 6px 0;
}

.ai-chat-messages {
    flex: 1;
    min-height: 160px;
    max-height: 280px;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.ai-chat-msg {
    max-width: 90%;
}

.ai-chat-msg-user {
    align-self: flex-end;
}

.ai-chat-msg-user .ai-chat-msg-content {
    background: var(--primary-color);
    color: #fff;
    border-radius: 16px 16px 4px 16px;
    padding: 10px 14px;
}

.ai-chat-msg-assistant .ai-chat-msg-content {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-radius: 16px 16px 16px 4px;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
}

.ai-chat-msg-placeholder .ai-chat-msg-content {
    font-style: italic;
    opacity: 0.9;
}

.ai-chat-input-bar {
    display: flex;
    gap: 10px;
    padding: 14px 20px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.ai-chat-input-bar input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background: var(--bg-primary);
    color: var(--text-primary);
}

.ai-chat-input-bar input::placeholder {
    color: var(--text-secondary);
}

.ai-chat-input-bar #ai-chat-send {
    white-space: nowrap;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Scrollbar personalizado */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-hover);
} 

/* Estilos para iconos de contraseña */
.password-input-container {
    position: relative;
    display: flex;
    align-items: center;
}

.password-toggle {
    position: absolute;
    right: 10px;
    background: none;
    border: none;
    color: #666;
    cursor: pointer;
    padding: 5px;
    font-size: 16px;
    transition: color 0.3s ease;
}

.password-toggle:hover {
    color: #333;
}

.password-input-container input[type="password"],
.password-input-container input[type="text"] {
    padding-right: 40px;
}

/* Tarjeta “Selección aleatoria”: gradiente, mismo peso visual que categorías */
.random-category-btn {
    background: linear-gradient(135deg, #7c3aed 0%, #6366f1 45%, #5b21b6 100%);
    color: #fff;
    padding: 1.5rem 1.35rem;
    border-radius: 24px;
    text-align: center;
    cursor: pointer;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    border: 2px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 10px 32px rgba(124, 58, 237, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.08);
    margin-bottom: 0;
    position: relative;
    overflow: visible;
}

[data-theme="dark"] .random-category-btn {
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(167, 139, 250, 0.35);
}

.random-category-btn:hover {
    z-index: 2;
    transform: translateY(-4px) scale(1.02);
    border-color: rgba(253, 224, 71, 0.95);
    box-shadow:
        0 20px 48px rgba(124, 58, 237, 0.55),
        0 0 0 2px rgba(249, 115, 22, 0.75),
        0 0 40px 12px rgba(167, 139, 250, 0.45),
        0 0 64px 18px rgba(249, 115, 22, 0.2);
}

[data-theme="light"] .random-category-btn:hover {
    box-shadow:
        0 22px 52px rgba(124, 58, 237, 0.42),
        0 0 0 2px rgba(249, 115, 22, 0.85),
        0 0 44px 14px rgba(167, 139, 250, 0.55),
        0 0 72px 22px rgba(249, 115, 22, 0.28);
}

.random-category-btn:active {
    transform: translateY(-2px);
}

.random-category-btn i {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
    color: #fff;
    animation: pulse 2s infinite;
}

.random-category-btn h3 {
    font-size: 1.25rem;
    margin: 0.35rem 0;
    font-weight: 700;
    color: #fff;
}

.random-category-btn p {
    font-size: 0.9rem;
    opacity: 0.95;
    margin: 0;
    color: rgba(255, 255, 255, 0.92);
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

/* Efecto de brillo en hover */
.random-category-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
    pointer-events: none;
}

.random-category-btn:hover::before {
    left: 100%;
} 

/* Estilos para el panel de administración mejorado */
.admin-user-info {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-left: auto;
}

.user-role-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.user-role-badge.admin {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.user-role-badge.profesor {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

/* Filtros de preguntas */
.filter-controls {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    padding: 20px;
    background: var(--card-bg);
    border-radius: 10px;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 200px;
}

.filter-group label {
    font-weight: 600;
    color: var(--text-color);
    font-size: 14px;
}

.filter-group select,
.search-group input {
    padding: 10px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-color);
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.filter-group select:focus,
.search-group input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.search-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
    min-width: 250px;
}

/* Estado sin preguntas */
.no-questions {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.no-questions i {
    font-size: 64px;
    margin-bottom: 20px;
    opacity: 0.5;
}

.no-questions h3 {
    margin-bottom: 10px;
    color: var(--text-color);
}

/* Estadísticas de usuarios */
.users-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 15px;
    text-align: center;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.stat-card i {
    font-size: 32px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.stat-number {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 5px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Elementos de categorías */
.category-item {
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.category-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.category-header i {
    font-size: 24px;
    color: var(--primary-color);
}

.category-header h4 {
    margin: 0;
    flex: 1;
}

.subcategory-count {
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.subcategories-preview {
    margin-top: 15px;
}

.subcategories-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.tag {
    background: var(--secondary-bg);
    color: var(--text-color);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    border: 1px solid var(--border-color);
}

.tag.more {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Elementos de usuarios */
.user-item {
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.user-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.user-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.user-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
}

.user-info h4 {
    margin: 0 0 5px 0;
}

.user-role {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.user-role.administrador {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.user-role.profesor {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.user-role.estudiante {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
}

.user-role.investigador {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    color: white;
}

.user-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
}

.user-details p {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
    font-size: 14px;
}

.user-details i {
    color: var(--primary-color);
    width: 16px;
}

/* Botones de acción */
.item-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.btn-secondary.danger {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a52 100%);
    color: white;
    border: none;
}

.btn-secondary.danger:hover {
    background: linear-gradient(135deg, #ff5252 0%, #d32f2f 100%);
    transform: translateY(-2px);
}

/* Modales mejorados */
.category-details h3 {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.category-details h3 i {
    font-size: 24px;
}

.subcategories-list {
    margin-top: 20px;
}

.subcategories-list h4 {
    margin-bottom: 15px;
    color: var(--text-color);
}

.subcategories-list ul {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
}

.subcategories-list li {
    background: var(--secondary-bg);
    padding: 10px 15px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    font-size: 14px;
}

.user-details-modal h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 24px;
}

.user-details-modal p {
    margin-bottom: 10px;
    font-size: 16px;
}

.achievements-list {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px solid var(--border-color);
}

.achievements-list h4 {
    margin-bottom: 15px;
    color: var(--text-color);
}

.achievements-list ul {
    list-style: none;
    padding: 0;
}

.achievements-list li {
    background: var(--secondary-bg);
    padding: 8px 15px;
    margin-bottom: 8px;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
    font-size: 14px;
}

/* Formularios en modales */
.form-actions {
    display: flex;
    gap: 15px;
    margin-top: 25px;
    justify-content: flex-end;
}

.form-actions button {
    min-width: 120px;
}

/* Mensaje de error */
.error-message {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    margin: 2rem 0;
    box-shadow: var(--shadow-lg);
    border: 2px solid #fecaca;
    animation: fadeIn 0.5s ease;
}

.error-message i {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
    color: #fecaca;
}

.error-message h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.error-message p {
    font-size: 1rem;
    opacity: 0.9;
    line-height: 1.5;
}

/* Estilos del Panel de Administración */
.question-section {
    margin-bottom: 2rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    border: 1px solid var(--border-color);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.section-header h3 {
    color: var(--text-primary);
    font-size: 1.25rem;
    margin: 0;
}

.questions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.admin-question-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    transition: var(--transition);
}

.admin-question-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

/* Profesor: tabla/lista compacta de preguntas */
.profesor-questions-table-wrapper {
    margin-top: 0.75rem;
}

.profesor-questions-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.profesor-questions-table thead th {
    text-align: left;
    padding: 0 0.75rem;
    height: 48px;
    box-sizing: border-box;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--table-row-border);
}

[data-theme="dark"] .profesor-questions-table thead th {
    background: rgba(30, 41, 59, 0.35);
}

.profesor-questions-table tbody td {
    padding: 0 0.75rem;
    height: 48px;
    box-sizing: border-box;
    border-bottom: 1px solid var(--table-row-border);
    vertical-align: middle;
}

.profesor-questions-table tbody tr:nth-child(even) td {
    background: rgba(99, 102, 241, 0.04);
}

.profesor-questions-table tbody tr:last-child td {
    border-bottom: none;
}

.profesor-question-row:hover td {
    background: rgba(167, 139, 250, 0.12);
}

.profesor-question-enunciado {
    max-width: 34rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 650;
    color: var(--text-primary);
}

.q-category-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 800;
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.profesor-question-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.35rem;
}

.profesor-question-actions .btn-icon {
    padding: 0.35rem;
    border-radius: 10px;
}

@media (max-width: 980px) {
    .profesor-question-enunciado {
        max-width: 14rem;
    }
}

.question-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.question-number {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.difficulty-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: capitalize;
}

.difficulty-facil {
    background: #d1fae5;
    color: #065f46;
}

.difficulty-medio {
    background: #fef3c7;
    color: #92400e;
}

.difficulty-dificil {
    background: #fee2e2;
    color: #991b1b;
}

[data-theme="dark"] .difficulty-facil {
    background: #064e3b;
    color: #6ee7b7;
}

[data-theme="dark"] .difficulty-medio {
    background: #78350f;
    color: #fcd34d;
}

[data-theme="dark"] .difficulty-dificil {
    background: #7f1d1d;
    color: #fca5a5;
}

.question-card-body {
    margin-bottom: 1rem;
}

.question-text {
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 0.75rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.question-info {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.question-info i {
    margin-right: 0.25rem;
}

.question-card-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}

.btn-icon {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 0.5rem;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
}

.btn-icon:hover {
    background: var(--bg-tertiary);
    transform: scale(1.1);
}

.btn-edit:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-delete:hover {
    color: var(--error-color);
    border-color: var(--error-color);
}

.admin-category-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.admin-category-card:hover {
    box-shadow: var(--shadow-md);
}

.category-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.category-card-header h3 {
    color: var(--text-primary);
    margin: 0;
}

.category-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.category-access-code {
    font-size: 0.85rem;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
}

.category-access-code code {
    background: var(--bg-tertiary);
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.category-stats {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.category-stats i {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

.subcategories-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.subcategory-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    font-size: 0.9rem;
}

.subcategory-item i {
    color: var(--primary-color);
    width: 20px;
}

.subcategory-count {
    margin-left: auto;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.admin-user-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1rem;
    transition: var(--transition);
}

.admin-user-card:hover {
    box-shadow: var(--shadow-md);
}

.user-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.user-rank {
    background: var(--primary-color);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.1rem;
}

.user-info-main {
    flex: 1;
}

.user-info-main h4 {
    color: var(--text-primary);
    margin: 0 0 0.25rem 0;
}

.user-email {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
}

.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-admin {
    background: #fee2e2;
    color: #991b1b;
}

.badge-profesor {
    background: #dbeafe;
    color: #1e40af;
}

[data-theme="dark"] .badge-admin {
    background: #7f1d1d;
    color: #fca5a5;
}

[data-theme="dark"] .badge-profesor {
    background: #1e3a8a;
    color: #93c5fd;
}

.user-stats {
    display: flex;
    gap: 2rem;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.stat-item i {
    color: var(--primary-color);
}

.empty-message {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Formulario de administración */
.admin-form {
    max-width: 100%;
}

.admin-form .form-group {
    margin-bottom: 1.5rem;
}

.admin-form label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9rem;
}

.admin-form input[type="text"],
.admin-form textarea,
.admin-form select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: var(--transition);
}

.admin-form input[type="text"]:focus,
.admin-form textarea:focus,
.admin-form select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.admin-form textarea {
    resize: vertical;
    min-height: 80px;
}

.option-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.option-input {
    flex: 1;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 0.9rem;
    white-space: nowrap;
}

.radio-label input[type="radio"] {
    width: auto;
    margin: 0;
    cursor: pointer;
}

/* Estilos para categorías personales */
.categories-separator {
    grid-column: 1 / -1;
    text-align: center;
    padding: 2rem 0;
    margin: 2rem 0;
    border-top: 2px solid var(--border-color);
    border-bottom: 2px solid var(--border-color);
}

.categories-separator h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

.categories-separator p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.profesor-categories-section {
    grid-column: 1 / -1;
    margin-bottom: 2rem;
}

.profesor-section-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
}

.profesor-section-header i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.profesor-section-header h4 {
    color: var(--text-primary);
    margin: 0;
    flex: 1;
}

.profesor-categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
}

.personal-category {
    position: relative;
    border: 2px dashed var(--primary-color);
}

.personal-badge {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
}

.category-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.user-info-header {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-info-header span {
    color: var(--text-primary);
    font-weight: 500;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.stat-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.stat-card h3 {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin: 0.5rem 0;
}

.stat-card p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.9rem;
}

.categories-section {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.categories-section:last-child {
    border-bottom: none;
}

.categories-section h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.categories-section h3 i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.section-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.personal-category-admin {
    border-left: 4px solid var(--primary-color);
}

/* Búsqueda y filtros */
.search-filter-bar {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    flex: 1;
    min-width: 200px;
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.filter-select {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

@media (max-width: 768px) {
    .search-filter-bar {
        flex-direction: column;
    }
    
    .search-box {
        width: 100%;
    }
    
    .filter-select {
        width: 100%;
    }
}

/* Responsive: navbar y juego móvil */
@media (max-width: 640px) {
    .app-navbar {
        padding: 0 0.75rem;
    }
    .navbar-btn span {
        display: none;
    }
    .navbar-btn {
        padding: 0.5rem 0.65rem;
    }
    .brand-logo-img--navbar {
        height: 34px;
        max-width: min(48vw, 180px);
    }
    .btn-jugar-hero {
        min-height: 64px !important;
        padding: 1rem 1.5rem !important;
        font-size: 1.25rem !important;
    }
    .game-header-row {
        flex-direction: column;
        align-items: flex-start;
    }
    .question-container.question-card {
        padding: 1.25rem 1rem;
    }
    .question {
        font-size: 1.2rem;
    }
    .ranking-wrapper {
        overflow-x: auto;
    }
    .ranking-table {
        font-size: 0.9rem;
    }
    .ranking-table th,
    .ranking-table td {
        padding: 0.75rem 0.5rem;
    }
}

/* Sistema de aprobación */
.badge-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.badge-pending {
    background: #fef3c7;
    color: #92400e;
}

.badge-approved {
    background: #d1fae5;
    color: #065f46;
}

[data-theme="dark"] .badge-pending {
    background: #78350f;
    color: #fcd34d;
}

[data-theme="dark"] .badge-approved {
    background: #064e3b;
    color: #6ee7b7;
}

.personal-category-admin.pending {
    border-left: 4px solid #f59e0b;
}

.personal-category-admin.approved {
    border-left: 4px solid #10b981;
}

.category-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.btn-approve {
    background: #10b981;
    color: white;
    border: none;
}

.btn-approve:hover {
    background: #059669;
}

.btn-reject {
    background: #ef4444;
    color: white;
    border: none;
}

.btn-reject:hover {
    background: #dc2626;
}

/* Alertas pedagógicas (panel profesor) */
.pedagogical-alerts-block {
    margin-bottom: 1.5rem;
}
.pedagogical-alert {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid var(--warning-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}
.pedagogical-alert-icon {
    font-size: 1.25rem;
}

/* Mis Resultados: rango lingüístico */
.mis-resultados-rank {
    margin-bottom: 1.25rem;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
}
.mis-resultados-rank .rank-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background: var(--primary-color);
    color: #fff;
    border-radius: 6px;
    font-weight: 600;
}
.mis-resultados-rank .rank-score {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-left: 0.25rem;
}

[data-theme="dark"] .mis-resultados-rank .rank-score {
    color: #f3f4f6;
    opacity: 0.9;
}

/* Formulario recuperar contraseña */
.form-hint {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}
.forgot-password-form .form-group {
    margin-bottom: 1rem;
}
.forgot-password-form .btn-primary {
    margin-top: 0.5rem;
}

/* Avatar picker modal */
.avatar-picker {
    padding: 0.5rem 0;
}
.avatar-picker-hint {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}
.avatar-defaults {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1rem;
}
.avatar-option {
    width: 64px;
    height: 64px;
    padding: 0;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    overflow: hidden;
    cursor: pointer;
    background: var(--bg-secondary);
    transition: border-color 0.2s, transform 0.2s;
}
.avatar-option:hover {
    border-color: var(--primary-color);
    transform: scale(1.05);
}
.avatar-option img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.avatar-upload label {
    cursor: pointer;
    margin: 0;
}

/* Ranking avatar */
.ranking-col-avatar {
    width: 48px;
}
.ranking-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    vertical-align: middle;
}

/* Mis Resultados perfil */
.mis-resultados-profile {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
}
.mis-resultados-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    object-fit: cover;
}
.mis-resultados-profile-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}
.btn-avatar-link {
    font-size: 0.9rem;
}

[data-theme="dark"] .btn-avatar-link {
    color: #f3f4f6;
    text-decoration: none;
}

[data-theme="dark"] .btn-avatar-link:hover {
    color: #ffffff;
    text-decoration: underline;
}

/* Panel profesor: avatar en cabecera */
.profesor-header-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}
.user-info-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

@keyframes resultRankPop {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.confetti-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
}

/* Biblioteca */
.biblioteca-table-wrap {
    width: 100%;
    max-width: 1050px;
}

.biblioteca-table td,
.biblioteca-table th {
    vertical-align: middle;
}

/* Progresos dashboard */
.progress-rank-banner {
    width: 100%;
    max-width: 1050px;
    border-radius: 16px;
    padding: 1rem 1.25rem;
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.2), rgba(249, 115, 22, 0.16));
    border: 1px solid rgba(124, 58, 237, 0.3);
    margin-bottom: 1rem;
}

.progress-rank-banner h3 {
    font-size: 1.4rem;
    margin-bottom: 0.35rem;
}

.progress-rank-banner p {
    margin-bottom: 0.4rem;
}

.progresos-grid {
    width: 100%;
    max-width: 1050px;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 1rem;
}

.progresos-card {
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 0.9rem 1rem;
    background: var(--bg-secondary);
}

.progress-radar-svg {
    width: 100%;
    max-width: 420px;
    height: auto;
    color: var(--text-secondary);
}

.progress-radar-description {
    margin-top: 0.6rem;
    font-size: 0.92rem;
    line-height: 1.5;
    color: var(--text-secondary);
}

.quick-stats .quick-stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 0;
    border-bottom: 1px dashed var(--border-color);
}

.quick-stats .quick-stat-item:last-child {
    border-bottom: 0;
}

.quick-stats .quick-stat-item strong {
    font-size: 1.15rem;
    color: var(--primary-color);
}

.medals-wall {
    width: 100%;
    max-width: 1050px;
    margin-top: 1rem;
}

.medals-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 0.75rem;
}

.medal-item {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.65rem 0.5rem;
    text-align: center;
    background: var(--bg-primary);
    position: relative;
}

.medal-icon-wrap {
    position: relative;
    width: 48px;
    height: 48px;
    margin: 0 auto 0.35rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.medal-item i {
    font-size: 1.35rem;
}

.medal-item.unlocked .medal-icon-wrap {
    background: linear-gradient(135deg, #8b5cf6, #f97316);
    color: #E2E8F0;
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.25), 0 10px 20px rgba(249, 115, 22, 0.28);
    animation: medalGlowPulse 2.2s ease-in-out infinite;
}

@keyframes medalGlowPulse {
    0%, 100% {
        box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.25), 0 10px 20px rgba(249, 115, 22, 0.28);
        filter: brightness(1);
    }
    50% {
        box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.45), 0 14px 28px rgba(167, 139, 250, 0.45);
        filter: brightness(1.08);
    }
}

.medal-item.locked {
    filter: grayscale(1);
    opacity: 0.78;
}

.medal-lock {
    position: absolute;
    right: -4px;
    bottom: -4px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #111827;
    color: #f3f4f6;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6rem;
}

.medal-label {
    display: block;
    font-size: 0.78rem;
    color: var(--text-primary);
    line-height: 1.25;
}

/* Tooltips de medallas */
.medal-tooltip {
    display: none;
    position: absolute;
    left: 50%;
    bottom: calc(100% + 10px);
    transform: translateX(-50%);
    max-width: 220px;
    background: rgba(2, 6, 23, 0.92);
    color: #f3f4f6;
    border: 1px solid rgba(148, 163, 184, 0.35);
    padding: 0.55rem 0.6rem;
    border-radius: 10px;
    font-size: 0.78rem;
    z-index: 50;
    box-shadow: 0 20px 50px rgba(0,0,0,0.35);
    backdrop-filter: blur(10px);
    white-space: normal;
}

.medal-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: rgba(2, 6, 23, 0.92);
}

.medal-item:hover .medal-tooltip {
    display: block;
}

@media (max-width: 900px) {
    .progresos-grid {
        grid-template-columns: 1fr;
    }
}

/* ——— Pantalla resultados: consola de logros + partículas ——— */
.results-screen-celebration {
    position: relative;
    overflow: hidden;
    background: #0b0e14;
    min-height: 100vh;
}

.results-console-container {
    position: relative;
    z-index: 2;
    max-width: 1100px;
}

.results-particles {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.results-particle {
    position: absolute;
    top: -12px;
    width: 6px;
    height: 10px;
    border-radius: 2px;
    background: linear-gradient(180deg, rgba(167, 139, 250, 0.55), rgba(124, 58, 237, 0.15));
    animation: resultsParticleFall linear infinite;
    opacity: 0.85;
}

@keyframes resultsParticleFall {
    0% { transform: translateY(0) rotate(0deg); opacity: 0; }
    8% { opacity: 0.9; }
    100% { transform: translateY(100vh) rotate(220deg); opacity: 0; }
}

.results-epic-header {
    text-align: center;
    margin-bottom: 1.75rem;
}

.results-done-title {
    font-size: clamp(1.35rem, 3vw, 1.85rem);
    font-weight: 700;
    color: #e2e8f0;
    margin-bottom: 0.5rem;
    letter-spacing: 0.02em;
}

.final-score-epic {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
    margin: 0.5rem 0 1rem;
}

.final-score-number {
    font-size: clamp(2.75rem, 12vw, 4.5rem);
    font-weight: 800;
    line-height: 1.05;
    background: linear-gradient(135deg, #fef9c3 0%, #facc15 25%, #f59e0b 45%, #fde047 60%, #eab308 80%, #fffbeb 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    filter: drop-shadow(0 2px 14px rgba(250, 204, 21, 0.35));
}

.final-score-suffix {
    font-size: 1rem;
    font-weight: 600;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.result-rank-badge-metallic {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.35rem;
    padding: 0.45rem 1.1rem;
    border-radius: 999px;
    font-size: 0.95rem;
    font-weight: 700;
    color: #fef3c7;
    background: linear-gradient(145deg, #334155 0%, #1e293b 40%, #475569 55%, #0f172a 100%);
    border: 1px solid rgba(250, 204, 21, 0.45);
    box-shadow:
        0 0 0 1px rgba(15, 23, 42, 0.8),
        0 4px 20px rgba(0, 0, 0, 0.45),
        inset 0 1px 0 rgba(255, 255, 255, 0.12);
    opacity: 0;
    transform: scale(0.85);
    animation: resultRankPop 0.65s ease-out 0.15s forwards;
}

.result-rank-badge-metallic .fa-trophy {
    color: #fbbf24;
    filter: drop-shadow(0 0 6px rgba(251, 191, 36, 0.6));
}

.results-main-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
    margin-bottom: 1.25rem;
}

@media (max-width: 768px) {
    .results-main-grid {
        grid-template-columns: 1fr;
    }
}

.results-panel {
    background: #151921;
    border: 1px solid #1e293b;
    border-radius: 16px;
    padding: 1rem 1.1rem 1.15rem;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

.results-panel-title {
    font-size: 1rem;
    font-weight: 700;
    color: #e2e8f0;
    margin-bottom: 0.35rem;
}

.results-panel-hint {
    font-size: 0.8rem;
    color: #94a3b8;
    margin-bottom: 0.65rem;
    line-height: 1.4;
}

.results-radar-wrap {
    display: flex;
    justify-content: center;
    align-items: center;
}

.results-radar-svg {
    width: 100%;
    max-width: 260px;
    height: auto;
    overflow: visible;
}

.results-radar-polygon-group {
    transform-origin: 100px 100px;
    transform: scale(0);
}

.results-radar-polygon-group.results-radar-animate {
    animation: resultsRadarGrowSvg 0.9s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes resultsRadarGrowSvg {
    from { transform: scale(0); }
    to { transform: scale(1); }
}

.results-medals-row {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.results-medal {
    flex: 1;
    min-width: 68px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    padding: 0.65rem 0.4rem;
    border-radius: 12px;
    border: 1px solid #1e293b;
    background: rgba(15, 23, 42, 0.35);
    color: rgba(148, 163, 184, 0.45);
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    transition: color 0.3s ease, border-color 0.3s ease, background 0.3s ease, transform 0.3s ease;
}

.results-medal i {
    font-size: 1.45rem;
    opacity: 0.4;
    transition: opacity 0.3s ease, filter 0.3s ease, transform 0.3s ease;
}

.results-medal.is-lit {
    color: #e2e8f0;
    border-color: rgba(167, 139, 250, 0.55);
    background: rgba(124, 58, 237, 0.12);
}

.results-medal.is-lit i {
    opacity: 1;
    color: #c4b5fd;
    filter: drop-shadow(0 0 8px rgba(167, 139, 250, 0.55));
}

.results-medal.is-pulse i {
    animation: medalGlowPulse 1.2s ease-in-out infinite;
}

@keyframes medalGlowPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.12); opacity: 0.85; }
}

.results-stats-compact {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    margin-bottom: 1rem;
}

.results-stat-chip {
    flex: 1;
    min-width: 140px;
    max-width: 220px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.2rem;
    padding: 0.65rem 0.75rem;
    background: #151921;
    border: 1px solid #1e293b;
    border-radius: 12px;
    color: #94a3b8;
}

.results-stat-chip i {
    font-size: 1.1rem;
    color: #7c3aed;
}

.results-stat-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.results-stat-value {
    font-size: 1.35rem;
    font-weight: 800;
    color: #e2e8f0;
    font-variant-numeric: tabular-nums;
}

.achievements-inline {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    margin-bottom: 1.25rem;
}

.achievement-inline {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.85rem;
    border-radius: 999px;
    background: rgba(124, 58, 237, 0.2);
    border: 1px solid rgba(167, 139, 250, 0.35);
    color: #e2e8f0;
    font-size: 0.88rem;
    font-weight: 600;
}

.achievement-inline.achievement-high-score {
    background: linear-gradient(135deg, rgba(250, 204, 21, 0.25), rgba(124, 58, 237, 0.25));
    border-color: rgba(250, 204, 21, 0.55);
    animation: highScorePulse 1.5s ease-in-out infinite;
}

@keyframes highScorePulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(250, 204, 21, 0.35); }
    50% { box-shadow: 0 0 0 6px rgba(250, 204, 21, 0.12); }
}

.results-actions-balanced {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    align-items: stretch;
}

.results-actions-balanced .btn-primary,
.results-actions-balanced .btn-secondary {
    flex: 1 1 160px;
    min-height: 48px;
    justify-content: center;
}

.btn-play-again-hero {
    background: linear-gradient(135deg, #6d28d9, #7c3aed) !important;
    border: 2px solid rgba(196, 181, 253, 0.85) !important;
    box-shadow: 0 0 24px rgba(124, 58, 237, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.12);
    font-weight: 700;
}

.btn-play-again-hero:hover {
    filter: brightness(1.06);
}

[data-theme="light"] .results-screen-celebration {
    background: var(--layer-base);
}

[data-theme="light"] .results-panel,
[data-theme="light"] .results-stat-chip {
    background: var(--layer-surface);
    border-color: var(--border-color);
}

[data-theme="light"] .results-done-title,
[data-theme="light"] .results-panel-title {
    color: var(--text-primary);
}

[data-theme="light"] .results-stat-value {
    color: var(--text-primary);
}

/* ——— Registro compacto + género (segmented 3) ——— */
.container-auth-tight {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 0.5rem;
    padding-bottom: 1rem;
    min-height: calc(100vh - 56px);
    max-width: 640px;
}

.login-screen-layout {
    flex-direction: column;
    align-items: center;
    gap: 0;
}

.login-mobile-brand {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.65rem;
}

.login-mobile-tagline {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin: 0;
    max-width: 18rem;
    line-height: 1.4;
}

.brand-logo-img--login-mobile {
    max-height: 100px;
    width: auto;
    max-width: min(85vw, 280px);
    object-fit: contain;
    filter: drop-shadow(0 4px 14px rgba(124, 58, 237, 0.2));
}

[data-theme="dark"] .brand-logo-img--login-mobile {
    filter: drop-shadow(0 4px 16px rgba(0, 0, 0, 0.5));
}

@media (max-width: 768px) {
    .login-mobile-brand {
        display: flex;
        padding-top: 0.35rem;
        margin-bottom: 0.85rem;
    }

    .auth-form-logo--in-card {
        display: none !important;
    }

    .login-screen-layout {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}

.auth-form-compact {
    max-width: 100%;
    width: 100%;
    padding: 1rem 1.15rem 1.1rem;
}

.auth-title-compact {
    margin-bottom: 0.65rem !important;
    font-size: 1.35rem;
}

.auth-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.55rem 0.85rem;
    width: 100%;
    margin-bottom: 0.5rem;
}

.form-grid-span-2 {
    grid-column: 1 / -1;
}

.auth-form-compact .form-group {
    margin-bottom: 0;
}

.auth-form-compact .form-group label {
    font-size: 0.8rem;
    margin-bottom: 0.25rem;
}

.auth-form-compact .form-group input {
    padding: 0.55rem 0.65rem;
    font-size: 0.92rem;
}

.auth-form-compact .password-input-container input {
    padding-right: 2.25rem;
}

.btn-auth-submit {
    width: 100%;
    margin-top: 0.35rem;
    padding: 0.65rem 1rem;
    font-size: 0.95rem;
}

.auth-footer-links {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
    margin-top: 0.45rem;
}

.btn-link-compact {
    font-size: 0.82rem;
    padding: 0.2rem;
}

.auth-form-compact .form-hint {
    font-size: 0.72rem;
    margin-top: 0.2rem;
    display: block;
}

@media (max-width: 540px) {
    .auth-form-grid {
        grid-template-columns: 1fr;
    }
    .form-grid-span-2 {
        grid-column: 1;
    }
}

/* Género: mismo patrón que rol, 3 opciones */
.gender-segment {
    position: relative;
    display: flex;
    gap: 3px;
    padding: 3px;
    border-radius: 12px;
    background: var(--layer-elevated);
}

[data-theme="dark"] .gender-segment {
    background: #1e293b;
}

.gender-segment-indicator {
    position: absolute;
    top: 3px;
    left: 3px;
    width: calc(33.333% - 4px);
    height: calc(100% - 6px);
    border-radius: 10px;
    background: linear-gradient(135deg, #7c3aed, #f97316);
    box-shadow: 0 0 16px rgba(124, 58, 237, 0.4);
    z-index: 0;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.gender-segment.is-femenino .gender-segment-indicator {
    transform: translateX(calc(100% + 3px));
}

.gender-segment.is-otro .gender-segment-indicator {
    transform: translateX(calc(200% + 6px));
}

.gender-segment-btn {
    position: relative;
    z-index: 1;
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.28rem;
    padding: 0.45rem 0.2rem;
    border: none;
    border-radius: 10px;
    background: transparent;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.72rem;
    cursor: pointer;
    transition: color 0.2s ease;
    white-space: nowrap;
}

.gender-segment-fa {
    font-size: 0.75rem;
    opacity: 0.85;
}

.gender-segment-btn.active {
    color: #f8fafc;
}

[data-theme="light"] .gender-segment-btn.active {
    color: #fff;
}

/* Categorías / subcategorías: cabecera fija + scroll interno en la rejilla */
.screen .container.container-categorias-layout {
    padding: calc(56px + 0.75rem) 1.5rem 0.75rem;
    max-width: 1180px;
    margin-left: auto;
    margin-right: auto;
    min-height: calc(100vh - 56px);
    max-height: calc(100vh - 56px);
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
}

.categorias-screen-header {
    flex-shrink: 0;
    margin-bottom: 0.65rem;
}

.categorias-screen-header-sub {
    text-align: center;
}

.categorias-header-sub-title {
    width: 100%;
    text-align: center;
}

.categorias-header-sub-title h2 {
    margin-left: auto;
    margin-right: auto;
}

.breadcrumb-back {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin: 0 0 0.5rem 0;
    padding: 0.2rem 0;
    background: none;
    border: none;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s ease;
    font-family: inherit;
}

.breadcrumb-back:hover {
    color: #a78bfa;
}

[data-theme="light"] .breadcrumb-back:hover {
    color: var(--primary-color);
}

.categorias-header-main h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 0.35rem 0;
    line-height: 1.25;
}

.categorias-header-main .user-info {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 1rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Padding generoso para que el box-shadow del hover no quede “cortado” por el overflow */
.categories-scroll-region,
.subcategories-scroll-region {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding: 18px 22px 22px;
    box-sizing: border-box;
}

.categories-scroll-region::-webkit-scrollbar,
.subcategories-scroll-region::-webkit-scrollbar {
    width: 0;
    height: 0;
    display: none;
}

/* Centrado vertical de subcategorías cuando hay poco contenido */
.subcategories-vertical-center {
    min-height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0;
    box-sizing: border-box;
}

.subcategories-vertical-center .subcategories-grid {
    width: 100%;
}

/* Rejilla adaptativa por cantidad de subcategorías (centrada) */
#subcategories-grid[data-count="1"] {
    grid-template-columns: minmax(0, 400px);
    justify-content: center;
    max-width: 440px;
    margin-left: auto;
    margin-right: auto;
}

#subcategories-grid[data-count="2"] {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

#subcategories-grid[data-count="3"] {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

#subcategories-grid[data-count="4"] {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-width: 760px;
    margin-left: auto;
    margin-right: auto;
}

#subcategories-grid[data-count="5"],
#subcategories-grid[data-count="6"] {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

#subcategories-grid[data-count="7"],
#subcategories-grid[data-count="8"],
#subcategories-grid[data-count="9"] {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 900px) {
    #subcategories-grid[data-count="3"] {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        max-width: 640px;
    }
}

@media (max-width: 560px) {
    #subcategories-grid[data-count="2"],
    #subcategories-grid[data-count="3"],
    #subcategories-grid[data-count="4"],
    #subcategories-grid[data-count="5"],
    #subcategories-grid[data-count="6"] {
        grid-template-columns: minmax(0, 1fr);
        max-width: 420px;
    }
}

/* Modo claro: elevación tipo material (sombra + borde gris fino) */
[data-theme="light"] .auth-card,
[data-theme="light"] .admin-login,
[data-theme="light"] .progresos-card,
[data-theme="light"] .chart-card,
[data-theme="light"] .stat-card,
[data-theme="light"] .category-card,
[data-theme="light"] .subcategory-card,
[data-theme="light"] .ranking-wrapper,
[data-theme="light"] .admin-list,
[data-theme="light"] .admin-header,
[data-theme="light"] .biblioteca-table-wrap,
[data-theme="light"] .progress-rank-banner,
[data-theme="light"] .modal-content,
[data-theme="light"] .explanation-content,
[data-theme="light"] .game-header,
[data-theme="light"] .mode-card {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    border: 1px solid #e5e7eb;
}

/* LINGÜÍZATE PREMIUM - NEON SYSTEM & OBSIDIAN BLUE (v21) */
.category-card-inner i { background: none !important; -webkit-background-clip: initial !important; -webkit-text-fill-color: initial !important; color: var(--category-color) !important; filter: none !important; }

/* Modo Oscuro: Azul Obsidiana Profundo */
[data-theme='dark'] .category-card { background: #0d1117 !important; border: 1px solid rgba(255, 255, 255, 0.05) !important; box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5) !important; }

/* Efecto Neon en Categorías y Subcategorías (borde manejado por pseudo-elementos) */
.category-card:hover, .subcategory-card:hover, .category-card.active, .subcategory-card.active { transform: translateY(-5px) !important; box-shadow: 0 0 15px var(--category-color), inset 0 0 10px rgba(255,255,255,0.1) !important; filter: none !important; /* Sin reflexiones, solo luz */ }

/* Restauración de Logo Dinámico */
.navbar-logo img, .brand-logo-img { animation: logoBreathe 3s ease-in-out infinite !important; }
.brand-logo-img--hero { animation: logoHeroFloat 4.5s ease-in-out infinite !important; }

@keyframes logoBreathe { 0%, 100% { transform: scale(1); filter: drop-shadow(0 0 8px rgba(124, 58, 237, 0.25)); } 50% { transform: scale(1.04); filter: drop-shadow(0 0 18px rgba(124, 58, 237, 0.45)); } }
@keyframes logoHeroFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

/* ===================================================
   ANIMACIÓN DE BORDE SECUENCIAL – TARJETAS (HOVER)
   Técnica: gradiente cónico giratorio como "borde"
   El pseudo-elemento ::before rota para simular un
   trazo que recorre los 4 lados de la tarjeta.
   No depende de width/height ni de overflow.
   =================================================== */

/* Asegurar contexto de apilamiento en las tarjetas */
.category-card,
.subcategory-card {
    isolation: isolate;
}

/* Capa base del pseudo-borde (inactiva en reposo) */
.category-card::before,
.subcategory-card::before {
    content: '';
    position: absolute;
    inset: -2px;                       /* levemente por fuera del borde original */
    border-radius: inherit;
    z-index: -1;                       /* detrás del contenido */
    pointer-events: none;
    background: conic-gradient(
        from 0deg,
        transparent 0deg,
        transparent 360deg
    );
    opacity: 0;
    transition: opacity 0.15s ease;
}

/* Máscara interior: recorta el centro para que sólo se vea el "borde" */
.category-card::after,
.subcategory-card::after {
    content: '';
    position: absolute;
    inset: 2.5px;                      /* grosor del borde visible */
    border-radius: 22px;               /* ligeramente menor que el radio de la tarjeta (24px) */
    z-index: -1;
    pointer-events: none;
    background: var(--bg-secondary);
    transition: background 0.2s ease;
}

/* --- HOVER: activa el gradiente y lo anima --- */
.category-card:hover::before,
.subcategory-card:hover::before {
    opacity: 1;
    background: conic-gradient(
        from var(--border-angle, 0deg),
        var(--category-color, var(--primary-color)) 0deg,
        transparent 120deg,
        var(--category-color, var(--primary-color)) 240deg,
        transparent 360deg
    );
    animation: borderSweep 1.5s linear forwards;
}

/* El fondo interior en modo oscuro */
[data-theme='dark'] .category-card::after,
[data-theme='dark'] .subcategory-card::after {
    background: #0d1117;
}

/* Keyframe: rota el ángulo de inicio del conic-gradient de 0 a 360°
   Eso simula el trazo girando alrededor de la tarjeta */
@keyframes borderSweep {
    from { --border-angle: 0deg; }
    to   { --border-angle: 360deg; }
}

/* Registrar la propiedad custom para que sea animable en navegadores modernos */
@property --border-angle {
    syntax: '<angle>';
    inherits: false;
    initial-value: 0deg;
}

/* Accesibilidad: sin animación si el usuario lo prefiere */
@media (prefers-reduced-motion: reduce) {
    .category-card:hover::before,
    .subcategory-card:hover::before {
        animation: none;
        background: conic-gradient(
            from 0deg,
            var(--category-color, var(--primary-color)) 0deg,
            transparent 90deg,
            var(--category-color, var(--primary-color)) 180deg,
            transparent 270deg,
            var(--category-color, var(--primary-color)) 360deg
        );
    }
}

#notifications {
    display: flex;
    z-index: 10000;
    pointer-events: none;
}

.auth-status {
    margin: 0 0 1rem;
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-sm);
    background: var(--layer-surface);
    border-left: 4px solid var(--primary-color);
    overflow-wrap: anywhere;
}

.auth-status[hidden] { display: none; }
.auth-status.error { border-left-color: var(--error-color); }
.auth-status.success { border-left-color: var(--success-color); }