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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
    line-height: 1.7;
    color: #2c3e50;
    background: #f5f7fa;
}

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

/* ADVERTENCIA PRINCIPAL - MUY VISIBLE */
.advertencia-principal {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);
    color: white;
    padding: 20px;
    text-align: center;
    font-size: 1.05em;
    box-shadow: 0 4px 6px rgba(0,0,0,0.2);
    border-bottom: 5px solid #c92a2a;
}

.advertencia-principal p {
    margin: 0;
    font-weight: 600;
}

.advertencia-principal strong {
    font-size: 1.15em;
    text-decoration: underline;
}

/* Header */
header {
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    color: white;
    padding: 30px 0;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.header-content h1 {
    font-size: 2em;
    margin-bottom: 10px;
    font-weight: 700;
}

.subtitle {
    font-size: 1.15em;
    opacity: 0.95;
    margin-bottom: 8px;
}

.header-disclaimer {
    font-size: 0.95em;
    opacity: 0.9;
    font-style: italic;
    background: rgba(255,255,255,0.2);
    padding: 8px 15px;
    border-radius: 4px;
    display: inline-block;
    margin-top: 10px;
}

/* Navegación */
nav {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding: 0;
    margin: 0;
}

nav li {
    margin: 0;
}

nav a {
    display: block;
    padding: 18px 20px;
    text-decoration: none;
    color: #1e40af;
    font-weight: 600;
    transition: all 0.3s;
    border-bottom: 3px solid transparent;
}

nav a:hover {
    background: #eff6ff;
    border-bottom-color: #3b82f6;
}

/* Main content */
main {
    background: white;
    margin: 30px auto;
    padding: 0;
    max-width: 1200px;
    border-radius: 12px;
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    overflow: hidden;
}

.contenido-principal {
    padding: 50px 40px;
}

h1 {
    color: #1e293b;
    font-size: 2.5em;
    margin-bottom: 25px;
    line-height: 1.3;
    font-weight: 700;
}

h2 {
    color: #3b82f6;
    font-size: 2em;
    margin-top: 50px;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 3px solid #dbeafe;
    font-weight: 700;
}

h3 {
    color: #1e293b;
    font-size: 1.5em;
    margin-top: 30px;
    margin-bottom: 15px;
    font-weight: 600;
}

h4 {
    color: #475569;
    font-size: 1.2em;
    margin-top: 20px;
    margin-bottom: 12px;
    font-weight: 600;
}

p {
    margin-bottom: 18px;
    font-size: 1.05em;
    line-height: 1.8;
}

/* DISCLAIMER DESTACADO */
.disclaimer-destacado {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border: 3px solid #f59e0b;
    border-radius: 12px;
    padding: 30px;
    margin: 30px 0;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.2);
}

.disclaimer-destacado h2 {
    color: #92400e;
    margin-top: 0;
    border-bottom: none;
}

.disclaimer-destacado ul {
    margin: 20px 0;
    padding-left: 0;
    list-style: none;
}

.disclaimer-destacado li {
    padding: 10px 0 10px 30px;
    margin: 8px 0;
    position: relative;
    font-weight: 500;
}

.enlace-oficial {
    background: white;
    padding: 15px;
    border-radius: 6px;
    border-left: 4px solid #f59e0b;
    margin-top: 15px;
    font-weight: 600;
    color: #92400e;
}

/* Intro educativa */
.intro-educativa {
    background: #f0f9ff;
    border-left: 5px solid #3b82f6;
    padding: 25px;
    margin: 30px 0;
    border-radius: 8px;
}

.intro-educativa p:last-child {
    margin-bottom: 0;
}

/* Índice de contenidos */
.indice-contenidos {
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    padding: 30px;
    margin: 30px 0;
}

.indice-contenidos h2 {
    margin-top: 0;
    color: #1e40af;
    border-bottom: none;
}

.indice-contenidos ul {
    margin-left: 0;
    padding-left: 25px;
}

.indice-contenidos li {
    margin: 12px 0;
}

.indice-contenidos a {
    color: #3b82f6;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.indice-contenidos a:hover {
    color: #1e40af;
    text-decoration: underline;
}

/* Cajas informativas */
.caja-informativa {
    background: #e0f2fe;
    border: 2px solid #0ea5e9;
    border-radius: 8px;
    padding: 25px;
    margin: 25px 0;
}

.caja-informativa h3 {
    color: #075985;
    margin-top: 0;
}

.nota-educativa {
    background: #fef3c7;
    border-left: 4px solid #f59e0b;
    padding: 15px 20px;
    margin: 20px 0;
    border-radius: 4px;
    font-style: italic;
    color: #78350f;
}

/* Grids de conceptos */
.conceptos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin: 30px 0;
}

.concepto-card {
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    padding: 25px;
    transition: all 0.3s;
}

.concepto-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.15);
    border-color: #3b82f6;
}

.concepto-card h4 {
    color: #1e40af;
    margin-top: 0;
    font-size: 1.3em;
}

/* Componentes educativos */
.componentes-educativos {
    margin: 30px 0;
}

.componente {
    background: #f8fafc;
    border-left: 5px solid #3b82f6;
    padding: 25px;
    margin: 25px 0;
    border-radius: 6px;
}

.componente h4 {
    color: #1e40af;
    margin-top: 0;
}

.advertencia-texto {
    background: #fee2e2;
    color: #991b1b;
    padding: 12px 18px;
    border-radius: 6px;
    margin: 15px 0;
    font-weight: 600;
}

.importante-educativo {
    background: #fef3c7;
    border: 3px solid #f59e0b;
    border-radius: 10px;
    padding: 25px;
    margin: 30px 0;
}

.importante-educativo h3 {
    color: #92400e;
    margin-top: 0;
}

/* Seguridad educativa */
.seguridad-educativa {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
    margin: 30px 0;
}

.principio-seguridad {
    background: #ecfdf5;
    border: 2px solid #10b981;
    border-radius: 10px;
    padding: 25px;
}

.principio-seguridad h4 {
    color: #065f46;
    margin-top: 0;
}

.alerta-educativa {
    background: #fef2f2;
    border: 3px solid #ef4444;
    border-radius: 10px;
    padding: 30px;
    margin: 30px 0;
}

.alerta-educativa h3 {
    color: #991b1b;
    margin-top: 0;
}

/* Glosario */
.glosario {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.termino {
    background: #f8fafc;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 20px;
    transition: all 0.3s;
}

.termino:hover {
    border-color: #3b82f6;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.1);
}

.termino h4 {
    color: #1e40af;
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 1.2em;
}

.termino p {
    margin: 0;
    color: #475569;
}

/* Prácticas grid */
.practicas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
    margin: 30px 0;
}

.practica {
    background: #f0fdf4;
    border: 2px solid #22c55e;
    border-radius: 10px;
    padding: 25px;
}

.practica h4 {
    color: #166534;
    margin-top: 0;
}

/* Recursos educativos */
.recursos-educativos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin: 30px 0;
}

.recurso-educativo {
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s;
}

.recurso-educativo:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.15);
    border-color: #3b82f6;
}

.recurso-educativo h3 {
    color: #1e40af;
    margin-top: 0;
}

.btn-educativo {
    display: inline-block;
    padding: 12px 28px;
    background: #3b82f6;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    margin-top: 15px;
    transition: all 0.3s;
}

.btn-educativo:hover {
    background: #1e40af;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(30, 64, 175, 0.3);
}

/* DISCLAIMER FINAL - MUY VISIBLE */
.disclaimer-final {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    border: 4px solid #dc2626;
    border-radius: 12px;
    padding: 40px;
    margin: 50px 0;
    box-shadow: 0 6px 20px rgba(220, 38, 38, 0.2);
}

.disclaimer-final h2 {
    color: #991b1b;
    margin-top: 0;
    border-bottom: none;
    text-align: center;
}

.disclaimer-contenido {
    background: white;
    padding: 30px;
    border-radius: 8px;
    margin-top: 20px;
}

.disclaimer-contenido h3 {
    color: #991b1b;
    border-bottom: 2px solid #fecaca;
    padding-bottom: 10px;
}

.disclaimer-contenido ul {
    margin: 15px 0;
    padding-left: 0;
    list-style: none;
}

.disclaimer-contenido li {
    padding: 8px 0 8px 25px;
    margin: 6px 0;
    font-weight: 500;
}

.contacto-oficial {
    background: #fef2f2;
    border: 2px solid #dc2626;
    padding: 20px;
    border-radius: 8px;
    margin-top: 20px;
    text-align: center;
    font-size: 1.1em;
    color: #991b1b;
}

/* Listas */
ul {
    margin-left: 20px;
    margin-bottom: 20px;
}

li {
    margin: 10px 0;
    line-height: 1.7;
}

/* Footer */
footer {
    background: #1e293b;
    color: #e2e8f0;
    padding: 50px 0 30px;
    margin-top: 60px;
}

.footer-disclaimer-box {
    background: #ef4444;
    color: white;
    padding: 30px;
    border-radius: 10px;
    margin-bottom: 40px;
    border: 3px solid #dc2626;
}

.footer-disclaimer-box h3 {
    color: white;
    margin-bottom: 15px;
    font-size: 1.4em;
}

.footer-disclaimer-box p {
    font-weight: 500;
    line-height: 1.7;
}

.footer-links-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.footer-columna h4 {
    color: white;
    margin-bottom: 20px;
    font-size: 1.2em;
}

.footer-columna ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-columna li {
    margin: 12px 0;
}

.footer-columna a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-columna a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid #475569;
    padding-top: 30px;
    text-align: center;
}

.footer-bottom p {
    margin: 8px 0;
}

.footer-nota {
    color: #94a3b8;
    font-size: 0.95em;
}

/* Responsive */
@media (max-width: 768px) {
    .advertencia-principal {
        font-size: 0.95em;
        padding: 15px 10px;
    }
    
    header .header-content h1 {
        font-size: 1.5em;
    }
    
    .contenido-principal {
        padding: 30px 20px;
    }
    
    h1 {
        font-size: 1.8em;
    }
    
    h2 {
        font-size: 1.5em;
    }
    
    nav ul {
        flex-direction: column;
    }
    
    nav a {
        border-bottom: 1px solid #f0f0f0;
    }
    
    .conceptos-grid,
    .seguridad-educativa,
    .practicas-grid,
    .recursos-educativos-grid {
        grid-template-columns: 1fr;
    }
}

/* Accesibilidad */
a:focus,
button:focus {
    outline: 3px solid #3b82f6;
    outline-offset: 2px;
}