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

:root {
    --primary-green: #1a3a1a;
    --secondary-green: #2d5016;
    --accent-red: #8b1538;
    --light-green: #f8fdf8;
    --white: #ffffff;
    --gray-light: #f8f9fa;
    --gray-medium: #e9ecef;
    --gray-dark: #6c757d;
    --text-dark: #212529;
    --shadow: rgba(0, 0, 0, 0.08);
    --shadow-hover: rgba(0, 0, 0, 0.15);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --gradient-primary: linear-gradient(135deg, #1a3a1a 0%, #2d5016 100%);
    --gradient-accent: linear-gradient(135deg, #8b1538 0%, #a01c42 100%);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.7;
    color: var(--text-dark);
    background: linear-gradient(135deg, #f8fdf8 0%, #ffffff 100%);
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: var(--white);
    color: var(--text-dark);
    padding: 24px 0;
    box-shadow: 0 1px 3px var(--shadow);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 20px;
}

.logo-placeholder {
    display: flex;
    align-items: center;
}

.logo-shield {
    width: 60px;
    height: 60px;
    background: var(--white);
    border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.logo-circle {
    width: 40px;
    height: 40px;
    background: var(--accent-red);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 20px;
}

.school-info h1 {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 4px;
    color: var(--primary-green);
}

.school-info h2 {
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    margin-bottom: 4px;
    color: var(--gray-dark);
}

.school-info .motto {
    font-size: 0.8rem;
    color: var(--accent-red);
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.refresh-btn {
    background: var(--gradient-accent);
    color: var(--white);
    border: none;
    padding: 14px 24px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 12px rgba(139, 21, 56, 0.3);
}

.refresh-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(139, 21, 56, 0.4);
}

/* Main Content */
.main {
    padding: 60px 0;
    min-height: calc(100vh - 140px);
}

/* Filters Section */
.filters-section {
    margin-bottom: 40px;
}

.search-container {
    position: relative;
    margin-bottom: 20px;
}

.search-input {
    width: 100%;
    padding: 18px 50px 18px 24px;
    border: 2px solid var(--gray-medium);
    border-radius: 50px;
    font-size: 16px;
    transition: var(--transition);
    background: var(--white);
    box-shadow: 0 2px 8px var(--shadow);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-green);
    box-shadow: 0 4px 20px rgba(26, 58, 26, 0.15);
}

.search-icon {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-dark);
    font-size: 18px;
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.filter-btn {
    background: var(--white);
    color: var(--text-dark);
    border: 2px solid var(--gray-medium);
    padding: 12px 24px;
    border-radius: 50px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 2px 8px var(--shadow);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--gradient-primary);
    color: var(--white);
    border-color: var(--primary-green);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(26, 58, 26, 0.3);
}

/* Loading */
.loading {
    text-align: center;
    padding: 60px 20px;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--gray-medium);
    border-top: 4px solid var(--secondary-green);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Error Message */
.error-message {
    text-align: center;
    padding: 40px 20px;
    background: #ffeaea;
    border: 1px solid #ffcccb;
    border-radius: var(--border-radius);
    color: var(--accent-red);
}

.error-message i {
    font-size: 48px;
    margin-bottom: 20px;
}

.retry-btn {
    background: var(--accent-red);
    color: var(--white);
    border: none;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    cursor: pointer;
    margin-top: 20px;
    transition: var(--transition);
}

.retry-btn:hover {
    background: #a01c42;
}

/* Subjects Section */
.subjects-section {
    display: grid;
    gap: 32px;
}

.subject-group {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--gray-medium);
}

.subject-group:hover {
    box-shadow: 0 8px 30px var(--shadow-hover);
    transform: translateY(-2px);
}

/* Grid de cursos por materia */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    padding: 24px;
    max-height: 1000px;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

/* Estado colapsado */
.subject-group.collapsed .courses-grid {
    max-height: 0;
    padding: 0 24px;
    overflow: hidden;
}

/* Para pantallas grandes, forzar exactamente 4 columnas */
@media (min-width: 1200px) {
    .courses-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Tarjetas de curso compactas */
.course-card {
    background: var(--white);
    border: 1px solid var(--gray-medium);
    border-radius: var(--border-radius-sm);
    padding: 20px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.course-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--shadow-hover);
    border-color: var(--primary-green);
}

.course-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.course-card:hover::before {
    transform: scaleX(1);
}

.course-header {
    margin-bottom: 16px;
}

.course-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-green);
    margin-bottom: 6px;
    line-height: 1.3;
}

.course-details {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.course-badge {
    background: var(--light-green);
    color: var(--primary-green);
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid var(--gray-medium);
}

.course-professor {
    color: var(--gray-dark);
    font-size: 0.85rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 5px;
    margin-bottom: 8px;
}

.course-stats {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--gray-medium);
}

.class-count {
    color: var(--primary-green);
    font-size: 0.85rem;
    font-weight: 600;
}

.view-classes-btn {
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.view-classes-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(26, 58, 26, 0.3);
}

/* Header de materia */
.subject-header {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 20px 24px;
    margin-bottom: 0;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.subject-header:hover {
    background: linear-gradient(135deg, #2d5016 0%, #1a3a1a 100%);
}

.subject-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255,255,255,0.1) 0%, transparent 100%);
    pointer-events: none;
}

.subject-header-content {
    flex: 1;
}

.subject-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 4px;
    letter-spacing: -0.01em;
}

.subject-subtitle {
    font-size: 0.9rem;
    opacity: 0.9;
    font-weight: 400;
}

.subject-toggle {
    display: flex;
    align-items: center;
    gap: 12px;
}

.subject-count {
    background: var(--gradient-accent);
    color: var(--white);
    padding: 6px 12px;
    border-radius: 16px;
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(139, 21, 56, 0.3);
}

.chevron {
    font-size: 1.2rem;
    transition: var(--transition);
    transform: rotate(-90deg); /* Empezar colapsado (flecha hacia la derecha) */
}

.subject-group:not(.collapsed) .chevron {
    transform: rotate(0deg); /* Cuando está abierto, la flecha apunta hacia abajo */
}

.subject-count {
    background: var(--gradient-accent);
    color: var(--white);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(139, 21, 56, 0.3);
}

.chevron {
    font-size: 1.2rem;
    transition: var(--transition);
    transform: rotate(-90deg); /* Empezar con la flecha apuntando hacia la derecha (cerrado) */
}

.subject-group:not(.collapsed) .chevron {
    transform: rotate(0deg); /* Cuando está abierto, la flecha apunta hacia abajo */
}

.classes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    padding: 0 20px; /* Empezar sin padding vertical */
    max-height: 0; /* Empezar colapsado */
    overflow: hidden; /* Empezar oculto */
    transition: var(--transition);
}

.subject-group:not(.collapsed) .classes-grid {
    max-height: 600px;
    padding: 20px;
    overflow-y: auto;
}

.class-card {
    background: var(--white);
    border: 1px solid var(--gray-medium);
    border-radius: var(--border-radius);
    padding: 24px;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 2px 12px var(--shadow);
    position: relative;
    overflow: hidden;
}

.class-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transition: var(--transition);
    transform-origin: left;
}

.class-card:hover::before {
    transform: scaleX(1);
}

.class-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 30px var(--shadow-hover);
    border-color: var(--primary-green);
}

.class-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.class-number {
    background: var(--gradient-accent);
    color: var(--white);
    padding: 8px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(139, 21, 56, 0.3);
}

.class-info {
    flex: 1;
    margin-right: 10px;
}

.class-course {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-green);
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.class-details {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 10px;
}

.class-badge {
    background: var(--light-green);
    color: var(--primary-green);
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid var(--gray-medium);
}

.class-professor,
.class-students {
    color: var(--gray-dark);
    font-size: 0.9rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}

.class-students {
    margin-top: 5px;
    color: var(--accent-red);
    font-size: 0.85rem;
}

.class-preview {
    color: var(--gray-dark);
    font-size: 0.9rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    animation: fadeIn 0.3s ease;
}

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

.modal-content {
    background-color: var(--white);
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100vh;
    overflow-y: auto;
    position: relative;
    animation: slideIn 0.3s ease;
    display: flex;
    flex-direction: column;
}

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

.close {
    position: fixed;
    right: 30px;
    top: 30px;
    color: var(--white);
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    z-index: 1001;
    transition: var(--transition);
    background: rgba(0, 0, 0, 0.5);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close:hover {
    background: var(--accent-red);
    transform: scale(1.1);
}

.modal-header {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 60px 40px 40px;
    min-height: 240px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.modal-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255,255,255,0.1) 0%, transparent 100%);
    pointer-events: none;
}

.modal-header h3 {
    font-size: 2.8rem;
    margin-bottom: 24px;
    font-weight: 800;
    letter-spacing: -0.02em;
    position: relative;
    z-index: 1;
}

.modal-info {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.modal-info .badge {
    background: var(--white);
    color: var(--primary-green);
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    position: relative;
    z-index: 1;
}

.modal-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.3);
}

.nav-btn {
    background: var(--white);
    color: var(--primary-green);
    border: none;
    padding: 14px 24px;
    border-radius: 30px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 150px;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    position: relative;
    z-index: 1;
}

.nav-btn:hover:not(:disabled) {
    background: var(--gradient-accent);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 21, 56, 0.4);
}

.nav-btn:disabled {
    background: rgba(255, 255, 255, 0.3);
    color: rgba(255, 255, 255, 0.6);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.class-position {
    color: var(--white);
    font-size: 14px;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.2);
    padding: 10px 18px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 1;
}

.modal-body {
    padding: 40px;
    flex: 1;
    max-width: 1000px;
    margin: 0 auto;
    width: 100%;
}

.professor-info,
.class-number,
.students-info {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
    font-size: 1.3rem;
    color: var(--primary-green);
    font-weight: 500;
    padding: 15px;
    background: var(--light-green);
    border-radius: var(--border-radius);
}

.content-section {
    margin-bottom: 40px;
    background: var(--white);
    border: 1px solid var(--gray-medium);
    border-radius: var(--border-radius);
    padding: 32px;
    box-shadow: 0 4px 20px var(--shadow);
    transition: var(--transition);
}

.content-section:hover {
    box-shadow: 0 8px 30px var(--shadow-hover);
    transform: translateY(-2px);
}

.content-section h4 {
    color: var(--primary-green);
    font-size: 1.5rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 2px solid var(--light-green);
    padding-bottom: 12px;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.content-section p {
    color: var(--text-dark);
    line-height: 1.8;
    margin-bottom: 16px;
    font-size: 1.1rem;
    font-weight: 400;
    white-space: pre-wrap; /* Preservar saltos de línea */
}

.content-section p:last-child {
    margin-bottom: 0;
}

.content-section br {
    line-height: 1.8;
}

/* Asegurar que el contenido renderizado se vea bien */
.content-section > div,
.content-section > span {
    display: block;
}

.content-section > div p {
    margin-bottom: 16px;
}

.content-section > div p:last-child {
    margin-bottom: 0;
}

/* Estilos específicos para contenido procesado por marked.js */
.content-section div > p {
    white-space: pre-wrap; /* Preservar espacios y saltos de línea */
    line-height: 1.8;
    margin-bottom: 16px;
}

.content-section div > p:last-child {
    margin-bottom: 0;
}

/* Estilos para contenido Markdown */
.content-section h1,
.content-section h2,
.content-section h3,
.content-section h4,
.content-section h5,
.content-section h6 {
    color: var(--primary-green);
    font-weight: 700;
    margin-top: 24px;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.content-section h1 { font-size: 1.8rem; }
.content-section h2 { font-size: 1.6rem; }
.content-section h3 { font-size: 1.4rem; }
.content-section h4 { font-size: 1.2rem; }
.content-section h5 { font-size: 1.1rem; }
.content-section h6 { font-size: 1rem; }

.content-section strong {
    font-weight: 700;
    color: var(--primary-green);
}

.content-section em {
    font-style: italic;
    color: var(--gray-dark);
}

.content-section code {
    background: var(--light-green);
    color: var(--primary-green);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
    font-size: 0.9em;
    border: 1px solid var(--gray-medium);
}

.content-section pre {
    background: var(--light-green);
    border: 1px solid var(--gray-medium);
    border-radius: var(--border-radius-sm);
    padding: 16px;
    overflow-x: auto;
    margin: 16px 0;
}

.content-section pre code {
    background: none;
    border: none;
    padding: 0;
    color: var(--text-dark);
}

.content-section ul,
.content-section ol {
    margin: 16px 0;
    padding-left: 24px;
}

.content-section li {
    margin-bottom: 8px;
    line-height: 1.6;
}

.content-section blockquote {
    border-left: 4px solid var(--accent-red);
    background: var(--light-green);
    margin: 16px 0;
    padding: 16px 20px;
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
    font-style: italic;
    color: var(--gray-dark);
}

.content-section a {
    color: var(--accent-red);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.content-section a:hover {
    color: var(--primary-green);
    text-decoration: underline;
}

.content-section table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    box-shadow: 0 2px 8px var(--shadow);
}

.content-section th,
.content-section td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--gray-medium);
}

.content-section th {
    background: var(--gradient-primary);
    color: var(--white);
    font-weight: 600;
}

.content-section tr:nth-child(even) {
    background: var(--light-green);
}

.content-section hr {
    border: none;
    height: 2px;
    background: var(--gray-medium);
    margin: 24px 0;
    border-radius: 1px;
}

.markdown-content {
    line-height: 1.7;
}

.markdown-content > *:first-child {
    margin-top: 0;
}

.markdown-content > *:last-child {
    margin-bottom: 0;
}

.resources-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.resource-link {
    color: var(--primary-green);
    text-decoration: none;
    padding: 20px 28px;
    background: linear-gradient(135deg, var(--light-green) 0%, rgba(248, 253, 248, 0.8) 100%);
    border-radius: 16px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 1.1rem;
    font-weight: 600;
    border: 2px solid rgba(26, 58, 26, 0.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    position: relative;
    overflow: hidden;
}

.resource-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(26, 58, 26, 0.1), transparent);
    transition: left 0.6s ease;
}

.resource-link:hover::before {
    left: 100%;
}

.resource-link:hover {
    background: var(--gradient-primary);
    color: var(--white);
    border-color: var(--primary-green);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(26, 58, 26, 0.25);
}

.resource-link i {
    font-size: 1.2em;
    opacity: 0.8;
    transition: var(--transition);
}

.resource-link:hover i {
    opacity: 1;
    transform: scale(1.1) rotate(5deg);
}

/* Estilos especiales para enlaces de YouTube en recursos */
.resource-link[href*="youtube.com"],
.resource-link[href*="youtu.be"] {
    background: linear-gradient(135deg, #ff0000 0%, #cc0000 100%);
    color: var(--white);
    border-color: #ff0000;
    box-shadow: 0 4px 15px rgba(255, 0, 0, 0.2);
}

.resource-link[href*="youtube.com"]:hover,
.resource-link[href*="youtu.be"]:hover {
    background: linear-gradient(135deg, #cc0000 0%, #990000 100%);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(255, 0, 0, 0.35);
}

.resource-link[href*="youtube.com"] i,
.resource-link[href*="youtu.be"] i {
    color: var(--white);
}

/* Estilos especiales para enlaces de Google Drive en recursos */
.resource-link[href*="drive.google.com"] {
    background: linear-gradient(135deg, #4285f4 0%, #1a73e8 100%);
    color: var(--white);
    border-color: #4285f4;
    box-shadow: 0 4px 15px rgba(66, 133, 244, 0.2);
}

.resource-link[href*="drive.google.com"]:hover {
    background: linear-gradient(135deg, #1a73e8 0%, #1557b0 100%);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(66, 133, 244, 0.35);
}

/* Estilos mejorados para enlaces automáticos detectados en el contenido */
.auto-link {
    color: var(--primary-green);
    text-decoration: none;
    padding: 8px 16px;
    background: linear-gradient(135deg, rgba(26, 58, 26, 0.08) 0%, rgba(26, 58, 26, 0.12) 100%);
    border-radius: 25px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    border: 2px solid rgba(26, 58, 26, 0.15);
    word-break: break-all;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.auto-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.auto-link:hover::before {
    left: 100%;
}

.auto-link:hover {
    background: var(--gradient-primary);
    color: var(--white);
    border-color: var(--primary-green);
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(26, 58, 26, 0.25);
}

.auto-link i {
    font-size: 0.9em;
    opacity: 0.9;
    transition: var(--transition);
}

.auto-link:hover i {
    opacity: 1;
    transform: scale(1.1);
}

/* Estilos especiales para enlaces de YouTube */
.auto-link[href*="youtube.com"],
.auto-link[href*="youtu.be"] {
    background: linear-gradient(135deg, #ff0000 0%, #cc0000 100%);
    color: var(--white);
    border-color: #ff0000;
    font-weight: 600;
    box-shadow: 0 3px 10px rgba(255, 0, 0, 0.2);
}

.auto-link[href*="youtube.com"]:hover,
.auto-link[href*="youtu.be"]:hover {
    background: linear-gradient(135deg, #cc0000 0%, #990000 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 0, 0, 0.3);
}

.auto-link[href*="youtube.com"]::before,
.auto-link[href*="youtu.be"]::before {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
}

/* Estilos especiales para enlaces de Google Drive */
.auto-link[href*="drive.google.com"] {
    background: linear-gradient(135deg, #4285f4 0%, #1a73e8 100%);
    color: var(--white);
    border-color: #4285f4;
    font-weight: 600;
    box-shadow: 0 3px 10px rgba(66, 133, 244, 0.2);
}

.auto-link[href*="drive.google.com"]:hover {
    background: linear-gradient(135deg, #1a73e8 0%, #1557b0 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(66, 133, 244, 0.3);
}

/* Estilos mejorados para elementos de recursos que no son enlaces */
.resource-item {
    color: var(--text-dark);
    padding: 16px 22px;
    background: linear-gradient(135deg, var(--light-green) 0%, rgba(248, 253, 248, 0.7) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 1rem;
    border: 2px solid rgba(26, 58, 26, 0.08);
    margin-bottom: 10px;
    transition: var(--transition);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.resource-item:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-color: rgba(26, 58, 26, 0.15);
}

.resource-item i {
    color: var(--primary-green);
    opacity: 0.8;
    font-size: 1.1em;
    transition: var(--transition);
}

.resource-item:hover i {
    opacity: 1;
    transform: scale(1.05);
}

/* Mejorar espaciado en contenido con enlaces automáticos */
.markdown-content .auto-link {
    margin: 2px 4px;
}

.modal-body p .auto-link {
    margin: 1px 2px;
}

/* Estilos especiales para la sección Extra */
#extraSection {
    border-left: 4px solid var(--accent-red);
    background: linear-gradient(135deg, #fff8f8 0%, #ffffff 100%);
    position: relative;
}

#extraSection::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-red), transparent);
    border-radius: 2px 2px 0 0;
}

#extraSection h4 {
    color: var(--accent-red);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 1.3rem;
}

#extraSection h4 i {
    color: var(--accent-red);
    margin-right: 8px;
    font-size: 1.1em;
}

/* Animación sutil para la sección Extra */
#extraSection {
    animation: fadeInExtra 0.6s ease-out;
}

@keyframes fadeInExtra {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Footer */
.footer {
    background: var(--gradient-primary);
    color: var(--white);
    text-align: center;
    padding: 32px 0;
    margin-top: 80px;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255,255,255,0.05) 0%, transparent 100%);
    pointer-events: none;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .school-info h1 {
        font-size: 2rem;
    }

    .courses-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 16px;
        padding: 20px;
    }

    .classes-grid {
        grid-template-columns: 1fr;
    }

    .modal-content {
        width: 100%;
        margin: 0;
    }

    .modal-header {
        padding: 40px 20px 20px;
        min-height: 150px;
    }

    .modal-header h3 {
        font-size: 2rem;
    }

    .modal-navigation {
        flex-direction: column;
        gap: 15px;
        margin-top: 20px;
    }
    
    .nav-btn {
        min-width: 120px;
        font-size: 13px;
    }
    
    .class-position {
        order: -1;
    }

    .modal-body {
        padding: 30px 20px;
    }
    
    .close {
        right: 20px;
        top: 20px;
        width: 50px;
        height: 50px;
        font-size: 30px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .school-info h1 {
        font-size: 1.5rem;
    }

    .school-info h2 {
        font-size: 1rem;
    }

    .filter-buttons {
        justify-content: center;
    }

    .courses-grid {
        grid-template-columns: 1fr;
        gap: 12px;
        padding: 16px;
    }

    .course-card {
        padding: 16px;
    }

    .course-name {
        font-size: 1rem;
    }

    .course-details {
        gap: 6px;
    }

    .course-badge {
        font-size: 0.7rem;
        padding: 2px 6px;
    }

    .class-details {
        flex-direction: column;
        gap: 5px;
    }
    
    .modal-header {
        padding: 30px 15px 15px;
        min-height: 120px;
    }

    .modal-header h3 {
        font-size: 1.5rem;
    }

    .modal-navigation {
        flex-direction: column;
        gap: 10px;
        margin-top: 15px;
    }
    
    .nav-btn {
        min-width: 100px;
        font-size: 12px;
        padding: 10px 15px;
    }
    
    .class-position {
        order: -1;
        font-size: 12px;
    }

    .modal-body {
        padding: 20px 15px;
    }
    
    .content-section {
        padding: 20px;
    }
    
    .close {
        right: 15px;
        top: 15px;
        width: 40px;
        height: 40px;
        font-size: 24px;
    }
}