/**
 * =====================================================
 * ESTILOS FRONTEND
 * Liceo Bicentenario Santa Teresa de los Andes
 * =====================================================
 */

/* =====================================================
   VARIABLES CSS
   ===================================================== */
:root {
    /* Colores institucionales */
    --color-primary: #1a3a6b;
    --color-secondary: #c9a84c;
    --color-accent: #d4af37;
    --color-dark: #2c3e50;
    --color-light: #f8f9fa;
    --color-white: #ffffff;
    --color-gray: #6c757d;
    --color-gray-light: #e9ecef;

    /* Tipografía */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Source Sans Pro', sans-serif;

    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;

    /* Sombras */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);

    /* Transiciones */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* =====================================================
   RESET Y BASE
   ===================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-dark);
    background-color: var(--color-white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-sm);
}

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

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

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

ul {
    list-style: none;
}

/* =====================================================
   UTILIDADES
   ===================================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mt-4 {
    margin-top: var(--spacing-lg);
}

.mt-5 {
    margin-top: var(--spacing-xl);
}

.bg-light {
    background-color: var(--color-light);
}

/* =====================================================
   BOTONES
   ===================================================== */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition-normal);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background-color: var(--color-secondary);
    border-color: var(--color-secondary);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

.btn-block {
    display: block;
    width: 100%;
}

/* =====================================================
   HEADER / NAVBAR
   ===================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition-normal);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    width: 60px;
    height: 60px;
    object-fit: contain;
}

.brand-text {
    flex: 1;
}

.site-name {
    font-size: 1.25rem;
    margin: 0;
    color: var(--color-primary);
}

.site-slogan {
    font-size: 0.875rem;
    color: var(--color-secondary);
    margin: 0;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-link {
    color: var(--color-dark);
    font-weight: 600;
    font-size: 0.9375rem;
    position: relative;
    padding: 0.5rem 0;
}

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

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

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

.navbar-toggler {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.navbar-toggler span {
    width: 25px;
    height: 3px;
    background-color: var(--color-primary);
    transition: var(--transition-fast);
}

/* =====================================================
   HERO / INICIO
   ===================================================== */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 80px;
}

.hero-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
}

.hero-slide.active {
    opacity: 1;
}

.hero-slide img,
.hero-slide video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(26, 58, 107, 0.8), rgba(201, 168, 76, 0.6));
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: var(--color-white);
}

.hero-title {
    font-size: 3.5rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 1s ease 0.3s both;
}

.hero-content .btn {
    animation: fadeInUp 1s ease 0.6s both;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    color: var(--color-white);
    font-size: 2rem;
    animation: bounce 2s infinite;
}

/* =====================================================
   SECCIONES GENERALES
   ===================================================== */
.section {
    padding: var(--spacing-xl) 0;
}

.section-header {
    margin-bottom: var(--spacing-lg);
}

.section-tag {
    display: inline-block;
    color: var(--color-secondary);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-xs);
}

.section-title {
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.section-divider {
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
    margin: 0 auto;
}

/* =====================================================
   NOSOTROS
   ===================================================== */
.nosotros-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.content-block {
    margin-bottom: var(--spacing-md);
}

.content-block h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.content-block i {
    color: var(--color-secondary);
}

.text-content {
    color: var(--color-dark);
    line-height: 1.8;
}

.valores-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.valores-list li {
    padding: 0.5rem 0;
    color: var(--color-dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.valores-list li::before {
    content: '✓';
    color: var(--color-secondary);
    font-weight: bold;
    font-size: 1.25rem;
}

.nosotros-image {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.nosotros-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent, rgba(26, 58, 107, 0.3));
}

/* =====================================================
   BICENTENARIO
   ===================================================== */
.bicentenario-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.bicentenario-text {
    font-size: 1.0625rem;
    line-height: 1.8;
}

.bicentenario-text h3 {
    margin-top: var(--spacing-md);
}

.bicentenario-text ul {
    list-style: none;
    padding-left: 0;
}

.bicentenario-text li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.bicentenario-text li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-secondary);
    font-weight: bold;
}

.bicentenario-media img {
    width: 100%;
    border-radius: 8px;
    box-shadow: var(--shadow-md);
}

/* =====================================================
   ESPECIALIDADES
   ===================================================== */
.especialidades-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.especialidad-card {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    text-align: center;
}

.especialidad-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.especialidad-icon {
    font-size: 3rem;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

.especialidad-card h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.especialidad-card p {
    color: var(--color-gray);
}

/* =====================================================
   NOTICIAS
   ===================================================== */
.noticias-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.noticia-card {
    background: var(--color-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.noticia-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.noticia-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: var(--color-gray-light);
}

.noticia-content {
    padding: var(--spacing-md);
}

.noticia-meta {
    font-size: 0.875rem;
    color: var(--color-gray);
    margin-bottom: var(--spacing-xs);
}

.noticia-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.noticia-card p {
    color: var(--color-gray);
    margin-bottom: var(--spacing-sm);
}

.noticia-link {
    color: var(--color-secondary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* =====================================================
   GALERÍA
   ===================================================== */
.galeria-filters {
    margin-bottom: var(--spacing-md);
}

.filter-btn {
    background: transparent;
    border: 2px solid var(--color-gray-light);
    padding: 0.5rem 1.5rem;
    margin: 0.25rem;
    border-radius: 25px;
    cursor: pointer;
    transition: var(--transition-fast);
    font-weight: 600;
    color: var(--color-gray);
}

.filter-btn.active,
.filter-btn:hover {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

.galeria-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-sm);
}

.galeria-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    cursor: pointer;
    aspect-ratio: 4/3;
}

.galeria-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-normal);
}

.galeria-item:hover img {
    transform: scale(1.1);
}

.galeria-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 58, 107, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

.galeria-item:hover .galeria-overlay {
    opacity: 1;
}

.galeria-overlay i {
    font-size: 3rem;
    color: var(--color-white);
}

/* =====================================================
   EVENTOS
   ===================================================== */
.eventos-timeline {
    max-width: 900px;
    margin: 0 auto;
}

.evento-card {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-white);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-md);
    transition: var(--transition-normal);
}

.evento-card:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.evento-fecha {
    flex-shrink: 0;
    width: 80px;
    text-align: center;
    padding: var(--spacing-sm);
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 8px;
}

.evento-dia {
    font-size: 2rem;
    font-weight: 700;
    font-family: var(--font-heading);
}

.evento-mes {
    font-size: 0.875rem;
    text-transform: uppercase;
}

.evento-info h4 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.evento-meta {
    font-size: 0.875rem;
    color: var(--color-gray);
    margin-bottom: var(--spacing-xs);
}

.evento-meta i {
    color: var(--color-secondary);
    margin-right: 0.25rem;
}

/* =====================================================
   CONTACTO
   ===================================================== */
.contacto-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
}

.info-card {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-white);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-sm);
}

.info-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-white);
    border-radius: 50%;
    font-size: 1.25rem;
}

.info-content h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.info-content p {
    margin: 0;
    color: var(--color-gray);
}

.social-links {
    padding: var(--spacing-md);
    background: var(--color-light);
    border-radius: 8px;
}

.social-icons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.social-icons a {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    transition: var(--transition-fast);
}

.social-icons a:hover {
    background: var(--color-secondary);
    transform: translateY(-4px);
}

/* Formulario */
.form-group {
    margin-bottom: var(--spacing-sm);
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-dark);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-body);
    font-size: 1rem;
    border: 2px solid var(--color-gray-light);
    border-radius: 4px;
    transition: var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.form-message {
    padding: var(--spacing-sm);
    border-radius: 4px;
    margin-top: var(--spacing-sm);
}

.form-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.contacto-map {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.contacto-map iframe {
    width: 100%;
    height: 400px;
    border: none;
}

/* =====================================================
   FOOTER
   ===================================================== */
.footer {
    background: var(--color-dark);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer-logo {
    width: 60px;
    margin-bottom: var(--spacing-sm);
}

.footer-title {
    color: var(--color-white);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.footer-col h4 {
    color: var(--color-secondary);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.footer-links li,
.footer-contact li {
    margin-bottom: 0.5rem;
}

.footer-links a,
.footer-contact li {
    color: var(--color-gray-light);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-secondary);
}

.footer-contact i {
    color: var(--color-secondary);
    margin-right: 0.5rem;
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    border-radius: 50%;
    transition: var(--transition-fast);
}

.social-link:hover {
    background: var(--color-secondary);
    transform: translateY(-4px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--color-gray-light);
}

/* =====================================================
   BACK TO TOP
   ===================================================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--color-secondary);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 999;
    box-shadow: var(--shadow-md);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--color-primary);
    transform: translateY(-4px);
}

/* =====================================================
   MODALES
   ===================================================== */
.modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    overflow: auto;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: 8px;
    position: relative;
    max-width: 90%;
    max-height: 90vh;
    overflow: auto;
    animation: slideIn 0.3s ease;
}

.modal-small {
    max-width: 500px;
}

.modal-fullscreen {
    max-width: 95%;
    max-height: 95vh;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 2rem;
    color: var(--color-gray);
    cursor: pointer;
    transition: var(--transition-fast);
}

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

.modal-title {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

/* =====================================================
   LOADING SPINNER
   ===================================================== */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.page-loader.active {
    opacity: 1;
    visibility: visible;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid var(--color-gray-light);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* =====================================================
   ANIMACIONES
   ===================================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

@keyframes slideIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* =====================================================
   RESPONSIVE
   ===================================================== */
@media (max-width: 1024px) {
    .nosotros-grid,
    .bicentenario-content {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }

    .navbar-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--color-white);
        flex-direction: column;
        justify-content: flex-start;
        padding: var(--spacing-md);
        transition: var(--transition-normal);
        box-shadow: var(--shadow-md);
    }

    .navbar-menu.active {
        left: 0;
    }

    .navbar-toggler {
        display: flex;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .section {
        padding: var(--spacing-md) 0;
    }

    .valores-list {
        grid-template-columns: 1fr;
    }

    .evento-card {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .site-name {
        font-size: 1rem;
    }

    .site-slogan {
        font-size: 0.75rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .btn {
        padding: 0.625rem 1.5rem;
        font-size: 0.9375rem;
    }
}

/* =====================================================
   FIN DE ESTILOS
   ===================================================== */