/* ==========================================================================
   CAMPUS VIRTUAL FUNDACIÓN PROYECTAR - ESTILO KHAN ACADEMY
   Hoja de Estilos Principal (Premium & Accesible)
   ========================================================================== */

/* Importación de fuentes de Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700;800&family=Poppins:wght@300;400;500;600;700&display=swap');

/* Importación de fuente OpenDyslexic (Simulada o cargada vía CDN para accesibilidad) */
@font-face {
    font-family: 'OpenDyslexic';
    src: url('https://cdn.jsdelivr.net/npm/opendyslexic@1.0.3/dist/opendyslexic/OpenDyslexic-Regular.otf') format('opentype');
    font-weight: normal;
    font-style: normal;
}

/* --------------------------------------------------------------------------
   Variables CSS y Tema Base
   -------------------------------------------------------------------------- */
:root {
    /* Colores institucionales */
    --color-primary: #1B3A6B;      /* Azul Marino */
    --color-secondary: #2E9FD4;    /* Celeste */
    --color-accent: #F0A500;       /* Dorado */
    --color-bg-base: #F7F9FC;      /* Fondo General */
    --color-card-bg: #FFFFFF;      /* Fondo Tarjetas */
    
    /* Variaciones y neutros */
    --color-text-dark: #1E293B;    /* Texto Principal */
    --color-text-muted: #64748B;   /* Texto Secundario */
    --color-text-light: #FFFFFF;   /* Texto Blanco */
    --color-border: #E2E8F0;       /* Bordes */
    
    /* Estados y efectos */
    --color-success: #10B981;      /* Éxito / Completado */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --shadow-premium: 0 20px 25px -5px rgba(27, 58, 107, 0.1), 0 10px 10px -5px rgba(27, 58, 107, 0.04);
    
    /* Fuentes */
    --font-body: 'Poppins', sans-serif;
    --font-heading: 'Montserrat', sans-serif;
    --base-font-size: 15px;
    
    /* Transiciones */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius: 12px;
}

/* --------------------------------------------------------------------------
   Clases de Accesibilidad (Modificaciones Dinámicas por JS)
   -------------------------------------------------------------------------- */
/* Alto Contraste */
body.high-contrast {
    --color-primary: #000000;
    --color-secondary: #FFFF00;
    --color-accent: #FFFF00;
    --color-bg-base: #121212;
    --color-card-bg: #1A1A1A;
    --color-text-dark: #FFFFFF;
    --color-text-muted: #CCCCCC;
    --color-text-light: #000000;
    --color-border: #FFFF00;
    --shadow-md: none;
    --shadow-lg: none;
    --shadow-premium: none;
}

/* Tipografía Accesible (OpenDyslexic) */
body.dyslexic-font {
    font-family: 'OpenDyslexic', 'Comic Sans MS', sans-serif !important;
    letter-spacing: 0.12em;
    word-spacing: 0.18em;
}
body.dyslexic-font h1, 
body.dyslexic-font h2, 
body.dyslexic-font h3, 
body.dyslexic-font h4, 
body.dyslexic-font h5, 
body.dyslexic-font h6,
body.dyslexic-font p,
body.dyslexic-font span,
body.dyslexic-font a,
body.dyslexic-font button,
body.dyslexic-font li {
    font-family: 'OpenDyslexic', 'Comic Sans MS', sans-serif !important;
}

/* Tamaño de Fuente Incrementado */
body.font-large {
    font-size: 18px;
}
body.font-large h1 { font-size: 2.5rem; }
body.font-large h2 { font-size: 2rem; }
body.font-large h3 { font-size: 1.6rem; }
body.font-large p { font-size: 1.1rem; }

/* --------------------------------------------------------------------------
   Estilos Base y Reseteo
   -------------------------------------------------------------------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: var(--base-font-size);
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg-base);
    color: var(--color-text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
    transition: color var(--transition-normal);
}

button {
    cursor: pointer;
    font-family: var(--font-body);
    border: none;
    background: none;
    transition: all var(--transition-fast);
}

/* --------------------------------------------------------------------------
   Botones Premium
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 24px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 6px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background-color: var(--color-primary) !important;
    border: 2px solid var(--color-primary) !important;
    color: var(--color-text-light) !important;
}

.btn-primary:hover {
    background-color: var(--color-secondary) !important;
    border-color: var(--color-secondary) !important;
    color: var(--color-text-light) !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(46, 159, 212, 0.3);
}

.btn-secondary {
    background-color: var(--color-accent) !important;
    border: 2px solid var(--color-accent) !important;
    color: var(--color-primary) !important;
}

.btn-secondary:hover {
    background-color: transparent !important;
    color: var(--color-accent) !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(240, 165, 0, 0.3);
}

.btn-outline {
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    background-color: transparent;
}

.btn-outline:hover {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   Header / Cabecera (Lineamiento 3, 5 y 9.1)
   -------------------------------------------------------------------------- */
.navbar-container {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--color-primary);
    transition: background-color var(--transition-normal);
}

/* Línea tricolor institucional bajo el header (Lineamiento 9.1) */
.page-header-line {
    height: 4px;
    background-color: #FFFFFF;
    box-shadow: 0 4px 0 0 var(--color-secondary), 0 8px 0 0 var(--color-accent);
    position: relative;
    z-index: 999;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px; /* Lineamiento 3.1 */
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-placeholder {
    height: 55px; /* Lineamiento 3.1 */
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light);
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: -1px;
}

.logo-placeholder span {
    color: var(--color-secondary);
}

.site-title {
    color: var(--color-text-light);
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
}

/* Navegación y Enlaces */
.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
    list-style: none;
}

.nav-links a {
    color: var(--color-text-light);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 8px 0;
}

.nav-links a:hover, 
.nav-links a.active {
    color: var(--color-accent);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-secondary);
    transition: width var(--transition-fast);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

/* Barra de Búsqueda Integrada (Lineamiento 5.1) */
.search-container {
    display: flex;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 6px 14px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    width: 250px;
    transition: all var(--transition-fast);
}

.search-container:focus-within {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: var(--color-secondary);
    width: 280px;
}

.search-container input {
    background: none;
    border: none;
    outline: none;
    color: var(--color-text-light);
    font-size: 0.85rem;
    width: 100%;
    margin-left: 8px;
}

.search-container input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.search-container i {
    color: rgba(255, 255, 255, 0.6);
}

/* Hamburguesa móvil */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    width: 30px;
    background: none;
    border: none;
}

.hamburger span {
    height: 3px;
    width: 100%;
    background-color: var(--color-text-light);
    border-radius: 3px;
    transition: all var(--transition-fast);
}

/* --------------------------------------------------------------------------
   Barra de Accesibilidad Flotante (Widget Premium)
   -------------------------------------------------------------------------- */
.accessibility-widget {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 2000;
}

.accessibility-btn {
    background-color: var(--color-secondary);
    color: var(--color-text-light);
    width: 56px;
    height: 56px;
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    border: 2px solid #FFFFFF;
    transition: transform var(--transition-fast);
}

.accessibility-btn:hover {
    transform: scale(1.1);
    background-color: var(--color-accent);
}

.accessibility-menu {
    position: absolute;
    bottom: 70px;
    right: 0;
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-premium);
    padding: 16px;
    width: 260px;
    display: none;
    flex-direction: column;
    gap: 12px;
}

.accessibility-menu.active {
    display: flex;
    animation: fadeInUp 0.3s ease forwards;
}

.accessibility-menu h4 {
    font-size: 1rem;
    margin-bottom: 4px;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 8px;
}

.accessibility-option {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.accessibility-option span {
    font-size: 0.85rem;
    font-weight: 500;
}

.accessibility-controls {
    display: flex;
    gap: 6px;
}

.control-btn {
    background-color: var(--color-bg-base);
    color: var(--color-primary);
    border: 1px solid var(--color-border);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
}

.control-btn:hover {
    background-color: var(--color-secondary);
    color: white;
}

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

/* --------------------------------------------------------------------------
   Hero Section / Banner Principal
   -------------------------------------------------------------------------- */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, #152c52 100%);
    padding: 80px 24px;
    color: var(--color-text-light);
    position: relative;
    overflow: hidden;
}

/* Decoraciones geométricas modernas de fondo */
.hero::before, .hero::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(46, 159, 212, 0.15) 0%, rgba(0, 0, 0, 0) 70%);
}

.hero::before {
    width: 600px;
    height: 600px;
    top: -200px;
    right: -100px;
}

.hero::after {
    width: 400px;
    height: 400px;
    bottom: -150px;
    left: -100px;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: center;
    position: relative;
    z-index: 10;
}

.hero-text h1 {
    font-size: 3rem;
    color: var(--color-text-light);
    margin-bottom: 20px;
    line-height: 1.15;
}

.hero-text h1 span {
    color: var(--color-secondary);
}

.hero-text p, .hero-text .hero-desc-wysiwyg p, .hero-text .hero-desc-wysiwyg {
    font-size: 1.15rem;
    color: #CCDDEE;
    margin-bottom: 30px;
    max-width: 540px;
}

/* Contenido WYSIWYG dentro del hero: izquierda por defecto (index.php) */
.hero-text .hero-desc-wysiwyg {
    margin: 0 0 30px 0;
    text-align: left;
}
.hero-text .hero-desc-wysiwyg p {
    margin: 0;
    text-align: left;
}

/* Hero de 1 columna (programas.php): centrado */
.hero-content[style*="grid-template-columns: 1fr"] .hero-text .hero-desc-wysiwyg,
.hero-content[style*="grid-template-columns: 1fr"] .hero-text .hero-desc-wysiwyg p {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-illustration {
    display: flex;
    justify-content: center;
    position: relative;
}

/* Elemento visual simulado tipo Khan Academy */
.illustration-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 20px;
    padding: 30px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
    animation: float 6s ease-in-out infinite;
}

.ill-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.ill-badge {
    background-color: var(--color-accent);
    color: var(--color-primary);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 700;
}

.ill-user {
    display: flex;
    align-items: center;
    gap: 10px;
}

.ill-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--color-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
}

.ill-body h3 {
    color: #FFFFFF;
    font-size: 1.3rem;
    margin-bottom: 12px;
}

.ill-progress {
    margin-top: 20px;
}

.ill-progress-text {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: #CCDDEE;
    margin-bottom: 8px;
}

.progress-bar-bg {
    height: 8px;
    background-color: rgba(255, 255, 255, 0.15);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background-color: var(--color-secondary);
    width: 65%;
    border-radius: 4px;
    transition: width 1.5s ease-out;
}

/* --------------------------------------------------------------------------
   Estadísticas Rápidas
   -------------------------------------------------------------------------- */
.stats {
    background-color: var(--color-card-bg);
    padding: 24px 0;
    box-shadow: var(--shadow-md);
    position: relative;
    z-index: 20;
    margin-top: -30px;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
    border-radius: 16px;
    border: 1px solid var(--color-border);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    text-align: center;
}

.stat-item:not(:last-child) {
    border-right: 1px solid var(--color-border);
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: 4px;
}

.stat-number span {
    color: var(--color-secondary);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* --------------------------------------------------------------------------
   Sección Oferta Académica (Programas)
   -------------------------------------------------------------------------- */
.programs-section {
    max-width: 1200px;
    margin: 80px auto;
    padding: 0 24px;
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-tag {
    color: var(--color-secondary);
    text-transform: uppercase;
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 2px;
    margin-bottom: 8px;
    display: block;
}

.section-header h2 {
    font-size: 2.2rem;
    margin-bottom: 16px;
}

.section-header p {
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* Filtros Dinámicos */
.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 8px 20px;
    border-radius: 30px;
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-weight: 500;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.tab-btn:hover, .tab-btn.active {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    border-color: var(--color-primary);
}

/* Grid de Cursos */
.programs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

/* Tarjeta de curso (Lineamiento 9.2) */
.course-card {
    background-color: var(--color-card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border-top: 3px solid transparent; /* Inicialmente transparente para hover */
    display: flex;
    flex-direction: column;
    height: 100%;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

/* Tarjeta de curso con acento dorado al hover (Lineamiento 9.2) */
.course-card:hover {
    border-top: 3px solid var(--color-accent);
    transform: translateY(-8px);
    box-shadow: var(--shadow-premium);
}

.course-image {
    height: 180px;
    position: relative;
    background-color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

/* Overlay de color en la imagen */
.course-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(27, 58, 107, 0.2), rgba(27, 58, 107, 0.8));
    z-index: 1;
}

.course-image-icon {
    font-size: 3.5rem;
    color: var(--color-text-light);
    z-index: 2;
    transition: transform var(--transition-normal);
}

.course-card:hover .course-image-icon {
    transform: scale(1.1) rotate(5deg);
}

.course-category {
    position: absolute;
    top: 16px;
    left: 16px;
    background-color: var(--color-secondary);
    color: var(--color-text-light);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 2;
}

.course-content {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.course-content h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    line-height: 1.3;
}

.course-content p, .course-content .course-desc-wysiwyg, .course-content .course-desc-wysiwyg p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-bottom: 20px;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--color-border);
    padding-top: 16px;
    margin-top: auto;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.meta-item i {
    color: var(--color-secondary);
}

.course-btn-container {
    margin-top: 16px;
}

.course-btn-container .btn {
    width: 100%;
}

/* --------------------------------------------------------------------------
   Simulador de Aula Virtual (Estilo Khan Academy)
   -------------------------------------------------------------------------- */
.classroom-section {
    display: none; /* Se activa con JS */
    background-color: var(--color-card-bg);
    border-top: 1px solid var(--color-border);
    min-height: calc(100vh - 80px);
}

.classroom-container {
    display: grid;
    grid-template-columns: 320px 1fr;
    min-height: calc(100vh - 80px);
}

/* Sidebar del Aula */
.classroom-sidebar {
    background-color: var(--color-bg-base);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    height: 100%;
    position: sticky;
    top: 80px;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--color-border);
    background-color: var(--color-primary);
    color: var(--color-text-light);
}

.sidebar-header h3 {
    color: var(--color-text-light);
    font-size: 1.15rem;
    margin-bottom: 4px;
}

.sidebar-header .classroom-back-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--color-secondary);
    font-weight: 600;
    margin-bottom: 12px;
}

.sidebar-header .classroom-back-btn:hover {
    color: var(--color-accent);
}

.sidebar-progress {
    margin-top: 12px;
}

.sidebar-progress-text {
    font-size: 0.75rem;
    color: #CCDDEE;
    display: flex;
    justify-content: space-between;
    margin-bottom: 4px;
}

.classroom-modules-list {
    list-style: none;
    padding: 12px 0;
}

.module-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-muted);
    padding: 16px 24px 8px 24px;
}

.lesson-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-dark);
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.lesson-item:hover {
    background-color: rgba(46, 159, 212, 0.08);
}

.lesson-item.active {
    background-color: rgba(46, 159, 212, 0.12);
    color: var(--color-primary);
    border-left-color: var(--color-secondary);
    font-weight: 600;
}

.lesson-status-icon {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
}

.lesson-item.completed .lesson-status-icon {
    color: var(--color-success);
}

.lesson-item.active .lesson-status-icon {
    color: var(--color-secondary);
}

/* Área de Contenido del Aula */
.classroom-content {
    padding: 40px 48px;
    overflow-y: auto;
    max-height: calc(100vh - 80px);
}

.video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background-color: #000;
    margin-bottom: 30px;
}

.video-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: white;
    text-align: center;
    padding: 24px;
}

.video-play-btn {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: var(--color-secondary);
    color: white;
    font-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    box-shadow: 0 0 20px rgba(46, 159, 212, 0.5);
    transition: all var(--transition-normal);
}

.video-play-btn:hover {
    transform: scale(1.1);
    background-color: var(--color-accent);
    box-shadow: 0 0 25px rgba(240, 165, 0, 0.6);
}

.classroom-text-content {
    max-width: 800px;
}

.classroom-text-content h1 {
    font-size: 2rem;
    margin-bottom: 16px;
}

.classroom-text-content .lesson-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 24px;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 16px;
}

.classroom-text-content .lesson-desc {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--color-text-dark);
}

.lesson-desc h3 {
    margin-top: 30px;
    margin-bottom: 12px;
    font-size: 1.3rem;
}

.lesson-desc ul {
    margin-left: 24px;
    margin-bottom: 20px;
}

.classroom-navigation-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 48px;
    border-top: 1px solid var(--color-border);
    padding-top: 24px;
}

/* --------------------------------------------------------------------------
   Sección Novedades / Noticias
   -------------------------------------------------------------------------- */
.news-section {
    background-color: #EDF1F7;
    padding: 80px 24px;
    transition: background-color var(--transition-normal);
}

body.high-contrast .news-section {
    background-color: #1a1a1a;
    border-top: 1px solid var(--color-border);
}

.news-container {
    max-width: 1200px;
    margin: 0 auto;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.news-card {
    background-color: var(--color-card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal);
}

.news-card:hover {
    transform: translateY(-5px);
}

.news-content {
    padding: 24px;
}

.news-date {
    font-size: 0.8rem;
    color: var(--color-secondary);
    font-weight: 600;
    text-transform: uppercase;
    display: block;
    margin-bottom: 8px;
}

.news-content h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.news-content p, .news-content .news-body-wysiwyg, .news-content .news-body-wysiwyg p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: 16px;
}

.news-link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.news-link:hover {
    color: var(--color-secondary);
}

/* --------------------------------------------------------------------------
   Sección Colaboradores / Nodos
   -------------------------------------------------------------------------- */
.partners-section {
    max-width: 1200px;
    margin: 80px auto;
    padding: 0 24px;
    text-align: center;
}

.partners-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 60px;
    flex-wrap: wrap;
    margin-top: 40px;
}

.partner-logo-sim {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.partner-logo-sim:hover {
    opacity: 1;
}

.partner-logo-sim i {
    font-size: 1.5rem;
    color: var(--color-secondary);
}

/* --------------------------------------------------------------------------
   Pie de Página / Footer (Lineamientos 7.1 y 7.2)
   -------------------------------------------------------------------------- */
.footer {
    background-color: var(--color-primary);
    color: #CCDDEE; /* Footer text colour (Lineamiento 7.1) */
    padding: 60px 24px 20px 24px;
    border-top: 4px solid #FFFFFF;
    box-shadow: 0 -4px 0 0 var(--color-secondary), 0 -8px 0 0 var(--color-accent);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* Footer columns 3 (Lineamiento 7.1) */
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h3 {
    color: #FFFFFF;
    font-size: 1.2rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 8px;
}

.footer-col h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--color-accent);
}

.footer-col p {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 12px;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: #CCDDEE;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
    color: var(--color-secondary);
    padding-left: 4px;
}

.footer-contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 0.9rem;
}

.footer-contact-item i {
    color: var(--color-secondary);
    font-size: 1rem;
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 0.8rem;
}

.footer-socials {
    display: flex;
    gap: 16px;
}

.footer-socials a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.05);
    color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.footer-socials a:hover {
    background-color: var(--color-secondary);
    transform: translateY(-3px);
}

/* --------------------------------------------------------------------------
   Animaciones
   -------------------------------------------------------------------------- */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --------------------------------------------------------------------------
   Responsividad y Media Queries
   -------------------------------------------------------------------------- */
@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-text p, .hero-text .hero-desc-wysiwyg, .hero-text .hero-desc-wysiwyg p {
        margin: 0 auto 30px auto;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .classroom-container {
        grid-template-columns: 1fr;
    }
    
    .classroom-sidebar {
        position: static;
        max-height: 300px;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 768px) { /* Mobile breakpoint (Lineamiento 5.1) */
    .nav-links {
        display: none; /* Se despliega mediante menú hamburguesa móvil con JS */
        flex-direction: column;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background-color: var(--color-primary);
        padding: 20px 24px;
        gap: 16px;
        border-bottom: 2px solid var(--color-secondary);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .search-container {
        display: none; /* Ocultar en la barra en móvil, o incluir dentro del menú */
    }
    
    .hamburger {
        display: flex;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .stat-item:not(:last-child) {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
        padding-bottom: 20px;
    }
    
    .hero-text h1 {
        font-size: 2.2rem;
    }
    
    .classroom-content {
        padding: 24px 16px;
    }
}

/* ==========================================================================
   Estilos del Modal de Registro/Inscripción (Premium)
   ========================================================================== */
.registration-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    display: none; /* Se activa dinámicamente con JS */
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.registration-modal-overlay.active {
    display: flex;
    opacity: 1;
}

.registration-modal-card {
    background-color: #FFFFFF;
    border-radius: var(--border-radius);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    width: 100%;
    max-width: 500px;
    margin: 20px;
    overflow: hidden;
    transform: scale(0.9);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    border: 1px solid var(--color-border);
}

.registration-modal-overlay.active .registration-modal-card {
    transform: scale(1);
}

.registration-modal-card .modal-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, #1a365d 100%);
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #FFFFFF;
}

.registration-modal-card .modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
}

.registration-modal-card .modal-close-btn {
    background: transparent;
    border: none;
    font-size: 1.75rem;
    color: rgba(255, 255, 255, 0.8);
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s ease;
}

.registration-modal-card .modal-close-btn:hover {
    color: #FFFFFF;
}

.registration-modal-card .modal-body {
    padding: 24px;
}

.registration-modal-card .modal-body p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 20px;
}

.form-group-modal {
    margin-bottom: 18px;
}

.form-group-modal label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-main);
    margin-bottom: 6px;
}

.form-group-modal input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--color-text-main);
    background-color: #F8FAFC;
    transition: all 0.2s ease;
}

.form-group-modal input:focus {
    outline: none;
    border-color: var(--color-secondary);
    background-color: #FFFFFF;
    box-shadow: 0 0 0 3px rgba(46, 159, 212, 0.15);
}

.registration-modal-card .modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 24px;
    padding-top: 18px;
    border-top: 1px solid var(--color-border);
}

/* Soporte para Modo de Accesibilidad de Alto Contraste */
body.high-contrast .registration-modal-card {
    background-color: #000000;
    border: 2px solid #FFFF00;
}

body.high-contrast .registration-modal-card .modal-header {
    background: #000000;
    border-bottom: 2px solid #FFFF00;
    color: #FFFF00;
}

body.high-contrast .registration-modal-card .modal-close-btn {
    color: #FFFF00;
}

body.high-contrast .form-group-modal label {
    color: #FFFFFF;
}

body.high-contrast .form-group-modal input {
    background-color: #000000;
    color: #FFFFFF;
    border: 1px solid #FFFF00;
}

body.high-contrast .form-group-modal input:focus {
    border-color: #FFFF00;
    box-shadow: 0 0 0 2px #FFFF00;
}

body.high-contrast .registration-modal-card .modal-body p {
    color: #FFFFFF;
}

body.high-contrast .registration-modal-card .modal-actions {
    border-top: 1px solid #FFFF00;
}

/* Pestañas del Modal de Acceso */
.modal-tabs {
    display: flex;
    border-bottom: 1px solid var(--color-border);
    background-color: #F8FAFC;
}

.modal-tab-btn {
    flex: 1;
    padding: 14px;
    text-align: center;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-muted);
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    cursor: pointer;
}

.modal-tab-btn:hover {
    color: var(--color-primary);
    background-color: rgba(46, 159, 212, 0.05);
}

.modal-tab-btn.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-secondary);
    background-color: #FFFFFF;
}

/* Soporte para Alto Contraste en las Pestañas */
body.high-contrast .modal-tabs {
    border-bottom: 2px solid #FFFF00;
    background-color: #000000;
}

body.high-contrast .modal-tab-btn {
    color: #FFFFFF;
    border-bottom: 2px solid transparent;
}

body.high-contrast .modal-tab-btn:hover {
    background-color: #1A1A1A;
    color: #FFFF00;
}

body.high-contrast .modal-tab-btn.active {
    color: #FFFF00;
    border-bottom-color: #FFFF00;
    background-color: #1A1A1A;
}

/* Perfil de Usuario en el Navbar */
.nav-user-profile {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    color: #FFFFFF !important;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.nav-user-profile:hover {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: var(--color-secondary);
    color: var(--color-accent) !important;
}

.nav-user-avatar {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background-color: var(--color-secondary);
    color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    border: 1px solid #FFFFFF;
}

body.high-contrast .nav-user-profile {
    background-color: #000000;
    border: 1.5px solid #FFFF00;
}

body.high-contrast .nav-user-profile:hover {
    background-color: #1A1A1A;
    color: #FFFF00 !important;
}

body.high-contrast .nav-user-avatar {
    background-color: #FFFF00;
    color: #000000;
    border: 1px solid #FFFF00;
}

/* ==========================================================================
   Estilos para las Pestañas y Lista de Alumnos en la Sidebar del Aula
   ========================================================================== */
.sidebar-tabs {
    display: flex;
    background-color: var(--color-bg-base);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.sidebar-tab-btn {
    flex: 1;
    padding: 12px 16px;
    text-align: center;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-muted);
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.sidebar-tab-btn:hover {
    color: var(--color-primary);
    background-color: rgba(46, 159, 212, 0.05);
}

.sidebar-tab-btn.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-secondary);
    background-color: var(--color-card-bg);
}

/* Contenedor de lista de alumnos */
.classroom-students-container {
    padding: 16px 20px;
    overflow-y: auto;
    flex-grow: 1;
}

.classroom-students-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.student-progress-item {
    display: flex;
    gap: 12px;
    padding: 12px;
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.student-progress-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.student-progress-item.is-current-user {
    border-color: var(--color-secondary);
    background-color: rgba(46, 159, 212, 0.04);
}

.student-avatar-container {
    display: flex;
    align-items: center;
}

.student-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.95rem;
    font-family: var(--font-heading);
}

.student-progress-item.is-current-user .student-avatar {
    background-color: var(--color-secondary);
}

.student-info {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.student-name-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.student-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-dark);
}

.me-tag {
    background-color: var(--color-accent);
    color: var(--color-primary);
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 0.65rem;
    font-weight: 700;
    margin-left: 4px;
    text-transform: uppercase;
}

.student-percentage {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-secondary);
}

.student-progress-bar-bg {
    height: 6px;
    background-color: var(--color-border);
    border-radius: 3px;
    overflow: hidden;
}

.student-progress-bar-fill {
    height: 100%;
    background-color: var(--color-success);
    border-radius: 3px;
    transition: width 0.5s ease-out;
}

.student-meta-row {
    font-size: 0.7rem;
    color: var(--color-text-muted);
}

/* Soporte para Modo de Accesibilidad de Alto Contraste */
body.high-contrast .sidebar-tabs {
    background-color: #000000;
    border-bottom: 2px solid #FFFF00;
}

body.high-contrast .sidebar-tab-btn {
    color: #FFFFFF;
    border-bottom: 2px solid transparent;
}

body.high-contrast .sidebar-tab-btn:hover {
    background-color: #1A1A1A;
    color: #FFFF00;
}

body.high-contrast .sidebar-tab-btn.active {
    color: #000000;
    background-color: #FFFF00;
    border-bottom-color: #FFFF00;
}

body.high-contrast .student-progress-item {
    background-color: #000000;
    border: 1px solid #FFFF00;
}

body.high-contrast .student-progress-item.is-current-user {
    background-color: #1A1A1A;
    border: 2px solid #FFFF00;
}

body.high-contrast .student-avatar {
    background-color: #000000;
    color: #FFFF00;
    border: 1px solid #FFFF00;
}

body.high-contrast .student-progress-item.is-current-user .student-avatar {
    background-color: #FFFF00;
    color: #000000;
}

body.high-contrast .student-progress-bar-bg {
    background-color: #000000;
    border: 1px solid #FFFF00;
}

body.high-contrast .student-progress-bar-fill {
    background-color: #FFFF00;
}

body.high-contrast .me-tag {
    background-color: #FFFF00;
    color: #000000;
    border: 1px solid #FFFF00;
}


/* ==========================================================================
   ESTILOS PARA CONTENIDO WYSIWYG (QUILL) EN EL FRONTEND
   Aplica las clases de alineación y formato que genera el editor Quill
   ========================================================================== */

/* Alineación de texto generada por Quill */
.ql-align-center  { text-align: center !important; }
.ql-align-right   { text-align: right !important; }
.ql-align-justify { text-align: justify !important; }

/* Contenedor genérico para cualquier output WYSIWYG */
.wysiwyg-output p,
.hero-desc-wysiwyg p,
.news-body-wysiwyg p,
.course-desc-wysiwyg p,
.lesson-content-wysiwyg p {
    margin-top: 0;
    margin-bottom: 0.5em;
}

.wysiwyg-output p:last-child,
.hero-desc-wysiwyg p:last-child,
.news-body-wysiwyg p:last-child,
.course-desc-wysiwyg p:last-child,
.lesson-content-wysiwyg p:last-child {
    margin-bottom: 0;
}

/* Listas generadas por Quill */
.wysiwyg-output ol,
.wysiwyg-output ul,
.hero-desc-wysiwyg ol,
.hero-desc-wysiwyg ul,
.news-body-wysiwyg ol,
.news-body-wysiwyg ul {
    padding-left: 1.4em;
    margin-bottom: 0.5em;
}

/* Links generados por Quill */
.wysiwyg-output a,
.hero-desc-wysiwyg a,
.news-body-wysiwyg a {
    color: var(--color-secondary);
    text-decoration: underline;
}

/* Estilos de texto del subtítulo en section-header */
.section-header .wysiwyg-output {
    font-size: 1rem;
    color: var(--color-text-muted);
    max-width: 620px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Subtítulo en hero (fondo oscuro) */
.hero-text .hero-desc-wysiwyg,
.hero-text .wysiwyg-output {
    color: #CCDDEE;
    font-size: 1.1rem;
    line-height: 1.65;
}