/* CSS para Lenguaje y Comunicación - 5° Básico */
/* Diseño accesible y responsive para currículum chileno */

/* ===== RESET Y VARIABLES ===== */
:root {
    /* Paleta de colores principal */
    --primary-color: #2c5aa0;
    --primary-dark: #1e3d6f;
    --primary-light: #4a7bc9;
    --secondary-color: #f39c12;
    --secondary-dark: #d68910;
    --accent-color: #27ae60;
    
    /* Colores para ejes */
    --lectura-color: #3498db;
    --escritura-color: #9b59b6;
    --oral-color: #e74c3c;
    
    /* Colores neutros */
    --light-color: #f8f9fa;
    --light-gray: #e9ecef;
    --medium-gray: #adb5bd;
    --dark-gray: #495057;
    --dark-color: #212529;
    
    /* Sombras */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
    
    /* Bordes */
    --border-radius: 8px;
    --border-radius-sm: 4px;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Tipografía base */
    --font-size-base: 16px;
    --font-family-primary: 'Open Sans', sans-serif;
    --font-family-secondary: 'Poppins', sans-serif;
    
    /* Transiciones */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Modo alto contraste */
.high-contrast {
    --primary-color: #0056b3;
    --primary-dark: #003d82;
    --secondary-color: #ff8c00;
    --light-color: #ffffff;
    --dark-color: #000000;
    --light-gray: #f0f0f0;
    --medium-gray: #666666;
}

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

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

body {
    font-family: var(--font-family-primary);
    color: var(--dark-color);
    background-color: var(--light-color);
    line-height: 1.6;
    overflow-x: hidden;
    padding-top: 70px; /* Para navbar fixed */
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== TIPOGRAFÍA ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-secondary);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

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

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

a:hover, a:focus {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--light-color);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    font-size: 2rem;
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-title {
    font-family: var(--font-family-secondary);
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--primary-color);
}

.brand-subtitle {
    font-size: 0.85rem;
    color: var(--medium-gray);
}

.navbar-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.toggle-icon {
    width: 25px;
    height: 3px;
    background-color: var(--dark-color);
    border-radius: 2px;
    transition: var(--transition-normal);
}

.navbar-menu {
    display: flex;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--dark-color);
    font-weight: 500;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.nav-link:hover, .nav-link:focus {
    background-color: var(--light-gray);
    text-decoration: none;
}

.nav-link.active {
    background-color: var(--primary-color);
    color: white;
}

.nav-item-special {
    margin-left: var(--spacing-md);
}

.nav-link.special {
    background-color: var(--secondary-color);
    color: white;
}

.nav-link.special:hover {
    background-color: var(--secondary-dark);
}

/* ===== BREADCRUMBS ===== */
.breadcrumbs-container {
    background-color: var(--light-gray);
    padding: var(--spacing-sm) 0;
    margin-top: 70px;
}

.breadcrumbs {
    display: flex;
    list-style: none;
    gap: var(--spacing-xs);
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.breadcrumb-item:not(:last-child)::after {
    content: "/";
    color: var(--medium-gray);
    margin-left: var(--spacing-xs);
}

.breadcrumb-item a {
    color: var(--primary-color);
}

.breadcrumb-item[aria-current="page"] {
    color: var(--dark-gray);
}

/* ===== HERO SECTION ===== */
.hero-section {
    position: relative;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    padding: var(--spacing-xl) 0;
    text-align: center;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 Z" fill="rgba(255,255,255,0.1)"/></svg>');
    background-size: cover;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.hero-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    color: white;
}

.hero-subtitle {
    display: block;
    font-size: 2rem;
    font-weight: 300;
    margin-top: var(--spacing-xs);
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator a {
    color: white;
    font-size: 1.5rem;
    display: block;
    padding: var(--spacing-xs);
}

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

/* ===== BOTONES ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-family-secondary);
    font-weight: 600;
    font-size: 1rem;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

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

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

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

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

.btn-resource {
    background-color: var(--accent-color);
    color: white;
}

.btn-resource:hover {
    background-color: #219653;
}

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

.btn-activity:hover {
    background-color: var(--secondary-dark);
}

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

.section-alt {
    background-color: var(--light-gray);
}

.section-title {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.section-subtitle {
    text-align: center;
    color: var(--medium-gray);
    margin-bottom: var(--spacing-lg);
    font-size: 1.1rem;
}

/* ===== RESUMEN ===== */
.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.summary-card {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform var(--transition-normal);
}

.summary-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.summary-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.summary-title {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-sm);
}

.summary-text {
    color: var(--dark-gray);
}

/* ===== EJES DE APRENDIZAJE ===== */
.axes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.axis-card {
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.axis-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.axis-card[data-axis="lectura"] {
    border-top: 4px solid var(--lectura-color);
}

.axis-card[data-axis="escritura"] {
    border-top: 4px solid var(--escritura-color);
}

.axis-card[data-axis="oral"] {
    border-top: 4px solid var(--oral-color);
}

.axis-card-header {
    padding: var(--spacing-lg);
    text-align: center;
}

.axis-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.axis-card[data-axis="lectura"] .axis-icon {
    color: var(--lectura-color);
}

.axis-card[data-axis="escritura"] .axis-icon {
    color: var(--escritura-color);
}

.axis-card[data-axis="oral"] .axis-icon {
    color: var(--oral-color);
}

.axis-title {
    color: var(--dark-color);
    margin-bottom: var(--spacing-sm);
}

.axis-card-body {
    padding: 0 var(--spacing-lg);
    flex-grow: 1;
}

.axis-description {
    color: var(--dark-gray);
    margin-bottom: var(--spacing-md);
}

.axis-keypoints {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.axis-keypoints li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.axis-keypoints li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.axis-card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--light-gray);
}

.axis-detail-btn {
    width: 100%;
    justify-content: center;
}

/* ===== OBJETIVOS DE APRENDIZAJE ===== */
.objectives-container {
    margin-top: var(--spacing-lg);
}

.objectives-filter {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    justify-content: center;
}

.filter-btn {
    padding: 0.5rem 1rem;
    background-color: var(--light-gray);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-family-secondary);
    font-weight: 500;
}

.filter-btn:hover {
    background-color: var(--medium-gray);
    color: white;
}

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

.objectives-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.objective-item {
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.objective-item:hover {
    box-shadow: var(--shadow-md);
}

.objective-header {
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    background-color: var(--light-color);
    border-bottom: 1px solid var(--light-gray);
}

.objective-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    color: white;
}

.badge-lectura {
    background-color: var(--lectura-color);
}

.badge-escritura {
    background-color: var(--escritura-color);
}

.badge-oral {
    background-color: var(--oral-color);
}

.objective-title {
    margin: 0;
    flex-grow: 1;
    font-size: 1.1rem;
}

.objective-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    transition: transform var(--transition-normal);
    color: var(--medium-gray);
}

.objective-toggle[aria-expanded="true"] {
    transform: rotate(180deg);
}

.objective-body {
    padding: 0 var(--spacing-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal), padding var(--transition-normal);
}

.objective-item.active .objective-body {
    padding: var(--spacing-md);
    max-height: 1000px;
}

.objective-description {
    color: var(--dark-gray);
    margin-bottom: var(--spacing-md);
}

.objective-examples {
    background-color: var(--light-gray);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
}

.objective-examples h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.objective-examples ul {
    list-style-position: inside;
    color: var(--dark-gray);
}

.objective-examples li {
    margin-bottom: 0.5rem;
}

/* ===== RECURSOS EDUCATIVOS ===== */
.resources-container {
    margin-top: var(--spacing-lg);
}

.resources-filter {
    margin-bottom: var(--spacing-lg);
    background-color: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.filter-options {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-md);
}

.filter-label {
    font-weight: 600;
    color: var(--dark-color);
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.resource-filter-btn {
    padding: 0.5rem 1rem;
    background-color: var(--light-gray);
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-family-primary);
}

.resource-filter-btn:hover {
    background-color: var(--medium-gray);
    color: white;
}

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

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.resource-card {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.resource-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.resource-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.resource-title {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-sm);
}

.resource-description {
    color: var(--dark-gray);
    flex-grow: 1;
    margin-bottom: var(--spacing-md);
}

.resource-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
    color: var(--medium-gray);
}

.resource-format, .resource-size {
    padding: 0.25rem 0.75rem;
    background-color: var(--light-gray);
    border-radius: var(--border-radius-sm);
}

.resource-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: auto;
}

/* ===== EVALUACIONES Y ACTIVIDADES ===== */
.activities-container {
    margin-top: var(--spacing-lg);
}

.activities-nav {
    margin-bottom: var(--spacing-lg);
}

.activities-filter {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
}

.activity-filter-btn {
    padding: 0.5rem 1rem;
    background-color: var(--light-gray);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-family-secondary);
    font-weight: 500;
}

.activity-filter-btn:hover {
    background-color: var(--medium-gray);
    color: white;
}

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

.activities-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.activity-card {
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.activity-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.activity-header {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--light-gray);
}

.activity-title {
    color: var(--dark-color);
    margin-bottom: var(--spacing-sm);
}

.activity-difficulty {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.difficulty-label {
    font-size: 0.9rem;
    color: var(--medium-gray);
}

.difficulty-level {
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
}

.difficulty-level.low {
    background-color: #d4edda;
    color: #155724;
}

.difficulty-level.medium {
    background-color: #fff3cd;
    color: #856404;
}

.difficulty-level.high {
    background-color: #f8d7da;
    color: #721c24;
}

.activity-body {
    padding: var(--spacing-md);
    flex-grow: 1;
}

.activity-description {
    color: var(--dark-gray);
    margin-bottom: var(--spacing-md);
}

.activity-objectives {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
}

.objective-label {
    color: var(--medium-gray);
}

.objective-code {
    background-color: var(--light-gray);
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius-sm);
    font-family: monospace;
}

.activity-time {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--medium-gray);
    font-size: 0.9rem;
}

.activity-footer {
    padding: var(--spacing-md);
    border-top: 1px solid var(--light-gray);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.activity-download {
    color: var(--primary-color);
    font-size: 1.2rem;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.activity-download:hover {
    background-color: var(--light-gray);
}

/* ===== OFFCANVAS ===== */
.offcanvas {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 500px;
    max-width: 100%;
    background-color: white;
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    z-index: 1100;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.offcanvas.active {
    transform: translateX(0);
}

.offcanvas-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1099;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.offcanvas-overlay.active {
    opacity: 1;
    visibility: visible;
}

.offcanvas-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--light-gray);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.offcanvas-title {
    margin: 0;
    color: var(--primary-color);
}

.offcanvas-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--medium-gray);
    padding: 0.5rem;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.offcanvas-close:hover {
    background-color: var(--light-gray);
    color: var(--dark-color);
}

.offcanvas-body {
    padding: var(--spacing-lg);
    flex-grow: 1;
    overflow-y: auto;
}

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

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.footer-brand-text {
    display: flex;
    flex-direction: column;
}

.footer-title {
    color: white;
    margin-bottom: 0.5rem;
}

.footer-subtitle {
    color: var(--medium-gray);
    font-size: 0.9rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.footer-column-title {
    color: white;
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.footer-nav {
    list-style: none;
}

.footer-nav li {
    margin-bottom: 0.75rem;
}

.footer-nav a {
    color: var(--medium-gray);
    transition: color var(--transition-fast);
}

.footer-nav a:hover {
    color: white;
    text-decoration: none;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-copyright {
    color: var(--medium-gray);
    font-size: 0.9rem;
}

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

.accessibility-btn {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.accessibility-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* ===== BOTÓN VOLVER ARRIBA ===== */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 100;
}

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

.back-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
}

/* ===== RESPONSIVIDAD ===== */
@media (max-width: 992px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    
    h1 {
        font-size: 2.2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.8rem;
    }
}

@media (max-width: 768px) {
    .navbar-toggle {
        display: flex;
    }
    
    .navbar-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--light-color);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }
    
    .navbar-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-list {
        flex-direction: column;
        width: 100%;
    }
    
    .nav-item-special {
        margin-left: 0;
        margin-top: var(--spacing-sm);
    }
    
    .offcanvas {
        width: 100%;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .axes-grid,
    .summary-grid,
    .resources-grid,
    .activities-list {
        grid-template-columns: 1fr;
    }
    
    .filter-options {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .footer-accessibility {
        width: 100%;
        justify-content: flex-start;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    h1 {
        font-size: 1.8rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.5rem;
    }
    
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .objective-header {
        flex-wrap: wrap;
    }
    
    .objective-title {
        font-size: 1rem;
    }
}

/* ===== ACCESIBILIDAD ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

:focus {
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
}

button:focus,
a:focus,
input:focus {
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
}

/* ===== ESTADOS DE CARGA ===== */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* ===== UTILIDADES ===== */
.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}