/* ==========================================
   RESET & VARIABLES
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #1e3a8a;      /* Azul marino profundo */
    --primary-light: #2563eb;/* Azul brillante */
    --accent: #0d9488;       /* Turquesa/Teal */
    --accent-hover: #0f766e;
    --dark: #0f172a;         /* Texto oscuro */
    --light-bg: #f8fafc;     /* Fondo claro alternativo */
    --card-bg: #ffffff;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius: 12px;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.01);
    --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
}

html {
    scroll-behavior: smooth;
    font-family: 'Inter', sans-serif;
    color: var(--dark);
    background-color: #ffffff;
    line-height: 1.6;
}

/* ==========================================
   LAYOUT REUTILIZABLE
   ========================================== */
.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

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

.section-title {
    text-align: center;
    max-width: 650px;
    margin: 0 auto 50px auto;
}

.section-title h2 {
    font-size: 2.2rem;
    color: var(--primary);
    margin-bottom: 12px;
}

.section-title p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* ==========================================
   NAVEGACIÓN
   ========================================== */
.navbar {
    background-color: #ffffff;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--primary);
    text-decoration: none;
}

.logo span {
    color: var(--accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 25px;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 600;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: var(--primary-light);
}

.nav-links .btn-nav {
    background-color: var(--primary);
    color: #ffffff;
    padding: 8px 18px;
    border-radius: 6px;
}

.nav-links .btn-nav:hover {
    background-color: var(--primary-light);
    color: #ffffff;
}

/* ==========================================
   HERO SECTION
   ========================================== */
.hero {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
    color: #ffffff;
    padding: 100px 0 90px 0;
    text-align: center;
}

.hero-container {
    max-width: 800px;
}

.badge {
    background-color: rgba(13, 148, 136, 0.2);
    color: #2dd4bf;
    border: 1px solid rgba(45, 212, 191, 0.3);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    color: #cbd5e1;
    margin-bottom: 35px;
}

.hero-btns {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.btn {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background-color: var(--accent);
    color: #ffffff;
}

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

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

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

/* ==========================================
   GRID DE TARJETAS (CURSOS Y PLANTILLAS)
   ========================================== */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.card-tag, .course-badge {
    align-self: flex-start;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 4px 10px;
    border-radius: 4px;
    margin-bottom: 15px;
}

.card-tag {
    background-color: #e0f2fe;
    color: #0369a1;
}

.course-badge {
    background-color: #fef3c7;
    color: #b45309;
}

.card h3 {
    font-size: 1.3rem;
    color: var(--dark);
    margin-bottom: 10px;
}

.card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 25px;
    flex-grow: 1;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border);
    padding-top: 20px;
}

.price {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--primary);
}

.btn-card {
    background-color: var(--light-bg);
    color: var(--primary);
    border: 1px solid var(--border);
    padding: 8px 16px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.btn-card:hover {
    background-color: var(--primary);
    color: #ffffff;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
    background-color: var(--dark);
    color: #94a3b8;
    padding-top: 60px;
}

.footer-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid #334155;
}

.footer-info h3 {
    color: #ffffff;
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.footer-info .quote {
    font-style: italic;
    font-size: 1.05rem;
    color: #cbd5e1;
    border-left: 3px solid var(--accent);
    padding-left: 15px;
    line-height: 1.5;
}

.footer-contact h4 {
    color: #ffffff;
    font-size: 1.1rem;
    margin-bottom: 15px;
}

.footer-contact ul {
    list-style: none;
}

.footer-contact li {
    margin-bottom: 10px;
}

.footer-contact a {
    color: #38bdf8;
    text-decoration: none;
}

.footer-contact a:hover {
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding: 20px 0;
    font-size: 0.85rem;
    color: #64748b;
}

/* ==========================================
   RESPONSIVO (MÓVILES Y TABLETS)
   ========================================== */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-btns {
        flex-direction: column;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        gap: 15px;
    }
}