/* ======================================================
   1. VARIABLES Y ESTILOS BASE
   ====================================================== */
:root {
    --primary-color: #007BFF;
    --primary-hover: #0056b3;
    --dark-bg: #121212;
    --surface-bg: #1E1E1E;
    --text-primary: #FFFFFF;
    --text-secondary: #B3B3B3;
    --border-color: #333333;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    font-size: 16px;
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

h1, h2, h3 {
    line-height: 1.3;
}

/* ======================================================
   2. ESTRUCTURA Y COMPONENTES GLOBALES (Móvil Primero)
   ====================================================== */

/* --- Header y Menú Hamburguesa --- */
.main-header { display: flex; justify-content: space-between; align-items: center; padding: 15px 20px; background-color: rgba(18, 18, 18, 0.85); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 1000; }
.logo { font-size: 22px; font-weight: 700; }
.hamburger-menu { display: block; background: none; border: none; color: var(--text-primary); font-size: 28px; cursor: pointer; z-index: 1100; }
.hamburger-menu .icon-close { display: none; }
.main-nav, .header-actions { display: none; } /* Ocultos en móvil por defecto */

.menu-collapsible-wrapper { position: fixed; top: 0; left: 0; width: 100%; height: 100vh; background-color: var(--dark-bg); display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 40px; opacity: 0; pointer-events: none; transform: translateY(-100%); transition: transform 0.4s ease, opacity 0.4s ease; }
.main-header.menu-open .menu-collapsible-wrapper { transform: translateY(0); opacity: 1; pointer-events: auto; }
.main-header.menu-open .hamburger-menu .icon-open { display: none; }
.main-header.menu-open .hamburger-menu .icon-close { display: block; }
.main-nav ul { display: flex; flex-direction: column; text-align: center; gap: 25px; font-size: 24px; }
.header-actions { display: flex; flex-direction: column; gap: 20px; }
.main-nav a:hover, .main-nav .active { color: var(--primary-color); font-weight: 700; }

/* --- Footer & WhatsApp --- */
.main-footer { text-align: center; padding: 40px 20px; border-top: 1px solid var(--border-color); color: var(--text-secondary); }
.whatsapp-flotante { position: fixed; width: 60px; height: 60px; bottom: 20px; right: 20px; background-color: #25D366; color: #FFF; border-radius: 50px; font-size: 30px; box-shadow: 2px 2px 6px rgba(0,0,0,0.25); z-index: 1001; display: flex; justify-content: center; align-items: center; text-decoration: none; transition: transform 0.3s ease; }
.whatsapp-flotante:hover { transform: scale(1.1); }

/* --- Tarjetas (Cursos, Blog) --- */
.courses-grid, .blog-grid, .beneficios-grid { display: grid; grid-template-columns: 1fr; gap: 25px; }
.course-card, .post-card { background-color: var(--surface-bg); border: 1px solid var(--border-color); border-radius: 12px; overflow: hidden; height: 100%; }
.course-image, .post-image { width: 100%; height: 200px; object-fit: cover; }
.course-info, .post-content { padding: 20px; }
.course-category, .post-category { display: inline-block; background-color: rgba(0, 123, 255, 0.1); color: var(--primary-color); padding: 5px 10px; border-radius: 6px; font-size: 12px; font-weight: 600; margin-bottom: 10px; }
.course-info h3, .post-card h3, .post-card h2 { font-size: 1.2em; margin-bottom: 10px; line-height: 1.4; }
.course-instructor, .post-meta { color: var(--text-secondary); font-size: 14px; margin-bottom: 15px; /* CORRECCIÓN: AÑADIDO MARGEN */ }
.course-meta { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--border-color); padding-top: 15px; margin-top: auto; /* CORRECCIÓN: EMPUJA AL FINAL */ }
.course-price { font-size: 1.1em; font-weight: 700; }
.course-info { display: flex; flex-direction: column; height: 100%; } /* CORRECCIÓN: PERMITE EMPUJAR EL PRECIO ABAJO */


/* Pega esto al final de la sección de botones en style.css */

.enroll-button {
    width: 100%;
    display: block; /* Asegura que tanto <a> como <button> ocupen todo el ancho */
}

/* Nueva clase para botones de éxito (verdes) */
.btn-success {
    background-color: #27ae60;
    color: #fff;
}
.btn-success:hover {
    background-color: #219150; /* Un verde un poco más oscuro */
}


/* --- Estilos para Breadcrumbs --- */
.breadcrumb-nav {
    padding: 20px 5%; /* Lo alinea con el resto del contenido */
    background-color: var(--surface-bg);
    border-bottom: 1px solid var(--border-color);
}
.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 15px;
}
.breadcrumb-item + .breadcrumb-item::before {
    content: "/";
    display: inline-block;
    padding: 0 0.75em;
    color: var(--text-secondary);
}
.breadcrumb-item a {
    color: var(--text-secondary);
    transition: color 0.3s ease;
}
.breadcrumb-item a:hover {
    color: var(--primary-color);
}
.breadcrumb-item.active {
    color: var(--text-primary);
    font-weight: 600;
    pointer-events: none; /* Para que no parezca clickeable */
}

/* ======================================================
   3. PÁGINAS ESPECÍFICAS (Móvil Primero)
   ====================================================== */

/* --- Página de Inicio --- */
.hero-section { text-align: center; padding: 80px 20px; }
.hero-content h1 { font-size: 2.2em; }
.featured-courses { padding: 60px 20px; }
.featured-courses h2 { text-align: center; font-size: 2.2em; margin-bottom: 40px; }

/* ... (Aquí irían más estilos de páginas específicas si fueran necesarios) ... */

/* ======================================================
   4. TABLET (768px y más)
   ====================================================== */
@media (min-width: 768px) {
    .main-header { padding: 20px 40px; }
    .logo { font-size: 24px; }
    .courses-grid, .beneficios-grid { grid-template-columns: repeat(2, 1fr); }
    .blog-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-content h1 { font-size: 3em; }
    .featured-courses { padding: 80px 40px; }
    .featured-courses h2 { font-size: 2.5em; }
}

/* ======================================================
   5. ESCRITORIO (1024px y más)
   ====================================================== */
@media (min-width: 1024px) {
    .main-header { padding: 20px 5%; }
    .hamburger-menu { display: none; }
    .main-nav, .header-actions { display: flex; }
    .menu-collapsible-wrapper { position: static; flex-direction: row; height: auto; width: auto; background-color: transparent; opacity: 1; pointer-events: auto; transform: none; transition: none; gap: 30px; }
    .main-nav ul { flex-direction: row; font-size: 16px; gap: 30px; }
    .header-actions { flex-direction: row; gap: 15px; }

    .courses-grid { grid-template-columns: repeat(3, 1fr); }
    .beneficios-grid { grid-template-columns: repeat(3, 1fr); }
    .hero-content h1 { font-size: 3.5em; }
    
    .blog-layout-container { grid-template-columns: 2.5fr 1fr; }
    .blog-sidebar { order: 0; }
    .course-main-layout { flex-direction: row; }
    .course-sidebar-right { position: sticky; top: 100px; }
}