/* AcademyC Main Stylesheet - Elite Design System */
:root {
    /* Light Theme (Default) */
    --primary: #FF0049;
    --primary-dark: #D0003C;
    --secondary: #0f172a;
    --bg-light: #f8fafc;
    --white: #ffffff;
    --text-dark: #1e293b;
    --text-muted: #64748b;
    --nav-bg: rgba(255, 255, 255, 0.9);
    --card-bg: #ffffff;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 10px 25px -5px rgba(0,0,0,0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.1);
    --radius: 12px;
}

[data-theme='dark'] {
    /* Dark Theme */
    --primary: #FF0049;
    --bg-light: #0f172a;
    --white: #1e293b;
    --text-dark: #f8fafc;
    --text-muted: #94a3b8;
    --nav-bg: rgba(15, 23, 42, 0.95);
    --card-bg: #1e293b;
    --secondary: #f8fafc;
    --border: #334155;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
    overflow-x: hidden;
}

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

a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* Navbar */
.navbar {
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    height: 80px;
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.brand { display: flex; align-items: center; gap: 10px; }
.logo-icon {
    background: var(--primary);
    color: white;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    font-size: 20px;
}
.logo-text { font-size: 24px; font-weight: 800; color: var(--secondary); letter-spacing: -1px; }

.nav-links ul { display: flex; gap: 30px; align-items: center; }
.nav-links a { font-weight: 600; color: var(--text-muted); font-size: 15px; }
.nav-links a:hover, .nav-links a.active { color: var(--primary); }

/* Dropdown Styles */
.dropdown {
    position: relative;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--card-bg);
    min-width: 180px;
    box-shadow: var(--shadow-lg);
    border-radius: 12px;
    padding: 10px 0;
    border: 1px solid var(--border);
    z-index: 1000;
}

/* Crear un puente invisible para que el mouse no se salga */
.dropdown-content::before {
    content: '';
    position: absolute;
    top: -20px;
    left: 0;
    width: 100%;
    height: 20px;
    background: transparent;
}

.dropdown-content a {
    display: block;
    padding: 12px 20px;
    color: var(--text-dark);
    font-size: 14px;
    text-align: left;
}

.dropdown-content a:hover {
    background: var(--bg-light);
    color: var(--primary);
}

.dropdown:hover .dropdown-content {
    display: block;
    animation: fadeIn 0.2s ease;
}

.nav-auth { display: flex; align-items: center; gap: 15px; }

.theme-toggle {
    background: none; border: none; color: var(--text-dark);
    font-size: 20px; cursor: pointer; padding: 8px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
}

/* Hero - FIXED CENTERING */
.hero {
    position: relative;
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: white;
    text-align: center;
    overflow: hidden;
}

#particles-js canvas {
    position: absolute;
    top: 0; left: 0;
    width: 100% !important; height: 100% !important;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: url('https://www.transparenttextures.com/patterns/cubes.png');
    opacity: 0.1; z-index: 2; pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 1000px;
    padding: 0 20px;
}

.hero h1 {
    font-size: 72px; font-weight: 800; margin-bottom: 24px;
    line-height: 1.05; letter-spacing: -3px;
}

.highlight { color: var(--primary); }

.hero p {
    font-size: 24px; opacity: 0.85; max-width: 700px; margin: 0 auto 50px;
}

.hero-btns { display: flex; justify-content: center; align-items: center; gap: 24px; }

/* Buttons */
.btn {
    padding: 12px 28px; border-radius: 50px; font-weight: 700;
    font-size: 15px; cursor: pointer; display: inline-block; border: none; transition: all 0.3s;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(255, 0, 73, 0.3); }
.btn-outline { background: transparent; color: var(--text-dark); border: 2px solid var(--border); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

.btn-hero-primary { 
    padding: 18px 40px; 
    background: var(--primary); 
    color: white !important; 
    border-radius: 50px; 
    font-weight: 800; 
    font-size: 18px; 
    box-shadow: 0 10px 25px rgba(255, 0, 73, 0.4);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}
.btn-hero-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(255, 0, 73, 0.5);
}

.btn-hero-secondary { 
    padding: 18px 40px; 
    background: rgba(255,255,255,0.15); 
    color: white !important; 
    border-radius: 50px; 
    font-weight: 800; 
    font-size: 18px; 
    border: 2px solid rgba(255,255,255,0.3);
    backdrop-filter: blur(5px);
    cursor: pointer;
    transition: all 0.3s ease;
}
.btn-hero-secondary:hover {
    background: rgba(255,255,255,0.25);
    border-color: white;
    transform: translateY(-3px);
}

/* Stats */
.stats {
    background: var(--card-bg); padding: 60px 0; position: relative; z-index: 20;
    border-radius: 20px; box-shadow: var(--shadow-md); max-width: 1100px;
    margin: -80px auto 0; border: 1px solid var(--border);
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); text-align: center; }
.stat-number { display: block; font-size: 40px; font-weight: 800; color: var(--primary); }
.stat-label { color: var(--text-muted); font-weight: 600; }

/* Page Header & Sections */
.page-header {
    background: var(--secondary);
    padding: 80px 0;
    color: #ffffff !important;
    text-align: center;
    transition: background-color 0.3s;
}

[data-theme='dark'] .page-header {
    background: #1e293b;
    border-bottom: 1px solid var(--border);
}

.page-header h1, .page-header p {
    color: #ffffff !important;
}

.section-title { font-size: 32px; font-weight: 800; margin-bottom: 40px; color: var(--secondary); }

/* Featured Card */
.featured-section { padding: 100px 0 40px; }
.featured-card {
    background: var(--card-bg); border-radius: 24px; overflow: hidden;
    display: grid; grid-template-columns: 1.2fr 1fr; box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
}
.featured-img img { width: 100%; height: 100%; object-fit: cover; }
.featured-info { padding: 60px; }
.badge { background: #fef2f2; color: #ef4444; padding: 6px 14px; border-radius: 50px; font-size: 12px; font-weight: 800; display: inline-block; margin-bottom: 20px; }
.featured-info h3 { font-size: 36px; font-weight: 800; margin-bottom: 20px; line-height: 1.2; }
.featured-info p { color: var(--text-muted); font-size: 18px; margin-bottom: 30px; }
.course-meta { display: flex; gap: 30px; margin-bottom: 40px; font-weight: 600; font-size: 14px; }
.course-meta i { color: var(--primary); margin-right: 8px; }

/* Course Grid */
.courses-section { padding: 80px 0; }
.section-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 40px; }
.view-all { color: var(--primary); font-weight: 700; display: flex; align-items: center; gap: 8px; }

.course-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    padding: 40px 0;
}

.course-card {
    background: var(--card-bg); 
    border-radius: 16px; 
    overflow: hidden;
    box-shadow: var(--shadow-sm); 
    transition: all 0.3s ease; 
    border: 1px solid var(--border);
    display: flex; 
    flex-direction: column;
    height: 100%; /* Altura uniforme */
}

.course-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); }

.card-img {
    height: 180px; /* Altura fija para la imagen */
    overflow: hidden;
}

.card-img img { 
    width: 100%; 
    height: 100%; 
    object-fit: cover; 
}

.card-body { 
    padding: 20px; 
    flex-grow: 1; 
    display: flex;
    flex-direction: column;
}

.card-tag { 
    color: var(--primary); 
    font-weight: 800; 
    font-size: 11px; 
    margin-bottom: 8px; 
    display: block; 
    text-transform: uppercase; 
}

.card-body h3 { 
    font-size: 18px; 
    font-weight: 700; 
    margin-bottom: 10px; 
    color: var(--text-dark); 
    line-height: 1.3;
}

.card-body p { 
    color: var(--text-muted); 
    font-size: 14px; 
    margin-bottom: 15px; 
    line-height: 1.5;
    /* Recortar texto a 3 líneas */
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-footer { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    border-top: 1px solid var(--border); 
    padding: 15px 20px; 
}
.instructor { font-weight: 600; font-size: 14px; color: var(--text-muted); }
.btn-icon { width: 36px; height: 36px; background: var(--bg-light); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--primary); }

/* CTA */
.cta-section { padding: 60px 0 100px; }
.cta-card { background: var(--primary); padding: 80px; border-radius: 24px; text-align: center; color: white; box-shadow: 0 20px 40px rgba(255, 0, 73, 0.2); }
.cta-card h2 { font-size: 40px; font-weight: 800; margin-bottom: 20px; }
.cta-card p { font-size: 20px; opacity: 0.9; margin-bottom: 40px; }
.btn-white { background: white; color: var(--primary); padding: 16px 40px; font-size: 18px; font-weight: 800; border-radius: 50px; }

/* Footer - FIXED DARK COLOR */
.main-footer {
    background: #0f172a !important; 
    color: #94a3b8;
    padding: 80px 0 40px;
    margin-top: 80px;
}

.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 60px; margin-bottom: 60px; }
.footer-brand h3 { color: white !important; font-size: 24px; margin-bottom: 20px; }
.social-links { display: flex; gap: 15px; margin-top: 20px; }
.social-links a { width: 40px; height: 40px; background: rgba(255,255,255,0.05); display: flex; align-items: center; justify-content: center; border-radius: 50%; color: white; transition: 0.3s; }
.social-links a:hover { background: var(--primary); transform: translateY(-3px); }
.footer-links h4, .footer-contact h4 { color: white !important; font-size: 18px; margin-bottom: 24px; }
.footer-links ul li { margin-bottom: 12px; }
.footer-links a { color: #94a3b8; }
.footer-links a:hover { color: white; }
.footer-bottom { text-align: center; border-top: 1px solid rgba(255,255,255,0.05); padding-top: 40px; font-size: 14px; color: #64748b; }

/* Course Detail Page Styles */
.course-detail-header { 
    padding: 100px 0; 
    background: var(--secondary); 
    color: #ffffff !important; 
}

[data-theme='dark'] .course-detail-header {
    background: #1e293b;
}

.course-detail-header h1, .course-detail-header p {
    color: #ffffff !important;
}

.course-badge { 
    background: var(--primary); 
    color: white !important; 
    padding: 5px 15px; 
    border-radius: 50px; 
    font-weight: 800; 
    font-size: 12px; 
    margin-bottom: 20px; 
    display: inline-block; 
}

.detail-grid { 
    display: grid; 
    grid-template-columns: 2fr 1fr; 
    gap: 40px; 
    margin-top: -60px; 
    position: relative; 
    z-index: 20; 
}

.content-box { 
    background: var(--card-bg); 
    padding: 40px; 
    border-radius: 24px; 
    box-shadow: var(--shadow-lg); 
    border: 1px solid var(--border); 
    color: var(--text-dark); 
    margin-bottom: 30px; 
}

.curriculum-item { 
    display: flex; 
    gap: 15px; 
    margin-bottom: 20px; 
    padding-bottom: 15px; 
    border-bottom: 1px solid var(--border); 
    color: var(--text-dark);
}

.curriculum-item i { color: var(--primary); margin-top: 5px; }

.sidebar-card { position: sticky; top: 100px; text-align: center; }

.price-tag { 
    font-size: 40px; 
    font-weight: 800; 
    color: var(--primary); 
    margin-bottom: 20px; 
    display: block; 
}

/* Animations */
.fade-in { animation: fadeIn 0.8s ease forwards; opacity: 0; }
.delay { animation-delay: 0.3s; }
.delay-2 { animation-delay: 0.6s; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

/* Responsive & Mobile Menu */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-dark);
    font-size: 24px;
    cursor: pointer;
    z-index: 1100;
}

@media (max-width: 1024px) {
    .featured-card { grid-template-columns: 1fr; }
    .course-grid { grid-template-columns: 1fr 1fr; }
    .hero h1 { font-size: 52px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 768px) {
    .mobile-menu-btn { display: block; }

    .nav-links {
        display: none; 
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background: var(--card-bg);
        padding: 30px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
        z-index: 1000;
    }

    .nav-links.show {
        display: block; 
        animation: fadeIn 0.3s ease;
    }

    .nav-links ul {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }

    .dropdown-content {
        position: static;
        display: none;
        transform: none;
        width: 100%;
        text-align: center;
        box-shadow: none;
        border: none;
        margin-top: 5px;
    }

    .dropdown:hover .dropdown-content {
        display: block;
    }

    .nav-auth { display: none; } 

    .hero h1 { font-size: 38px; }
    .course-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
    .cta-card { padding: 40px 20px; }
    .cta-card h2 { font-size: 30px; }
}