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

:root {
    /* Colores principales */
    --primary-color: #0066cc;
    --secondary-color: #00a3e0;
    --accent-color: #4CAF50;
    --emergency-color: #ff4444;
    --dark-color: #1a1a1a;
    --light-color: #ffffff;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #6c757d;
    --gray-600: #495057;
    --gray-700: #343a40;
    --gray-800: #212529;

    /* Gradientes */
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));

    /* Tipografía */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;

    /* Espaciado */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Animaciones */
    --transition-base: all 0.3s ease;
    --transition-fast: all 0.15s ease;
}

/* Configuración base del documento */
html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--light-color);
    overflow-x: hidden;
}

/* Utilidades generales */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: var(--font-size-base);
    text-decoration: none;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition-base);
    line-height: 1;
    min-width: 140px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--light-color);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

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

.btn-outline {
    background: transparent;
    color: var(--gray-700);
    border-color: var(--gray-300);
}

.btn-outline:hover {
    background: var(--gray-100);
}

.btn-full {
    width: 100%;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--gray-800);
}

.section-description {
    font-size: var(--font-size-lg);
    text-align: center;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
}

/* Header y navegación */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    border-bottom: 1px solid var(--gray-200);
}

.nav {
    padding: var(--spacing-md) 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: var(--primary-color);
}

.logo-icon {
    font-size: var(--font-size-2xl);
}

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

.nav-link {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    transition: var(--transition-base);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-base);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--gray-700);
    transition: var(--transition-base);
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: var(--gradient-hero);
    color: var(--light-color);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    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"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.hero-description {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-2xl);
    opacity: 0.9;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.hero-visual {
    position: relative;
}

.hero-image {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    transform: perspective(1000px) rotateY(-15deg) rotateX(5deg);
    transition: var(--transition-base);
}

.hero-image:hover {
    transform: perspective(1000px) rotateY(-10deg) rotateX(2deg);
}

.hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.floating-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 12px;
    font-weight: 600;
    font-size: var(--font-size-sm);
    animation: float 3s ease-in-out infinite;
}

.floating-card:first-child {
    top: 20%;
    right: -10%;
    animation-delay: 0s;
}

.floating-card:last-child {
    bottom: 30%;
    left: -15%;
    animation-delay: 1.5s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

/* Technologies Section */
.technologies {
    padding: var(--spacing-3xl) 0;
    background: var(--gray-100);
    position: relative;
    overflow: hidden;
}

.technologies::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(0, 102, 204, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(0, 163, 224, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.section-header {
    margin-bottom: var(--spacing-3xl);
    position: relative;
    z-index: 2;
}

.technologies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    position: relative;
    z-index: 2;
}

.tech-card {
    background: var(--light-color);
    padding: var(--spacing-2xl);
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--gray-200);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    perspective: 1000px;
}

.tech-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.6s ease;
    z-index: 1;
}

.tech-card:hover::before {
    left: 100%;
}

.tech-card:hover {
    transform: translateY(-12px) rotateX(5deg);
    box-shadow:
        var(--shadow-xl),
        0 30px 60px rgba(0, 102, 204, 0.2);
    border-color: var(--primary-color);
}

.tech-card:nth-child(1):hover {
    animation: vrPulse 2s ease-in-out infinite;
}

.tech-card:nth-child(2):hover {
    animation: arGlow 2s ease-in-out infinite;
}

.tech-card:nth-child(3):hover {
    animation: immersiveWave 2s ease-in-out infinite;
}

.tech-card:nth-child(4):hover {
    animation: traditionalFloat 2s ease-in-out infinite;
}

.tech-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    position: relative;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2;
}

.tech-icon::before {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    background: var(--gradient-primary);
    border-radius: 50%;
    opacity: 0;
    z-index: -1;
    transition: all 0.6s ease;
}

.tech-card:hover .tech-icon {
    transform: scale(1.1) rotateY(360deg);
    box-shadow:
        0 0 30px rgba(0, 102, 204, 0.6),
        0 0 60px rgba(0, 163, 224, 0.4);
}

.tech-card:hover .tech-icon::before {
    opacity: 0.3;
    transform: scale(1.2);
}

/* VR Specific Effects */
.tech-card:nth-child(1) .tech-icon {
    background: linear-gradient(135deg, #6366f1, #8b5cf6, #a855f7);
}

.tech-card:nth-child(1):hover .tech-icon {
    animation: vrRotate 3s ease-in-out infinite;
}

/* AR Specific Effects */
.tech-card:nth-child(2) .tech-icon {
    background: linear-gradient(135deg, #06b6d4, #0ea5e9, #3b82f6);
}

.tech-card:nth-child(2):hover .tech-icon {
    animation: arScan 2s ease-in-out infinite;
}

/* Immersive Specific Effects */
.tech-card:nth-child(3) .tech-icon {
    background: linear-gradient(135deg, #10b981, #059669, #047857);
}

.tech-card:nth-child(3):hover .tech-icon {
    animation: immersivePulse 1.5s ease-in-out infinite;
}

/* Traditional Specific Effects */
.tech-card:nth-child(4) .tech-icon {
    background: linear-gradient(135deg, #f59e0b, #d97706, #b45309);
}

.tech-card:nth-child(4):hover .tech-icon {
    animation: traditionalGlow 2s ease-in-out infinite;
}

.tech-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--gray-800);
}

.tech-card p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.tech-features {
    list-style: none;
    text-align: left;
}

.tech-features li {
    padding: var(--spacing-xs) 0;
    color: var(--gray-700);
    position: relative;
    padding-left: var(--spacing-lg);
}

.tech-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

/* Benefits Section */
.benefits {
    padding: var(--spacing-3xl) 0;
}

.benefits-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.benefits-text h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-2xl);
    color: var(--gray-800);
}

.benefit-item {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    align-items: flex-start;
}

.benefit-icon {
    font-size: var(--font-size-2xl);
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.benefit-text h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--gray-800);
}

.benefit-text p {
    color: var(--gray-600);
    line-height: 1.6;
}

.benefits-visual {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.benefits-visual img {
    width: 100%;
    height: auto;
    display: block;
}

/* Courses Section */
.courses {
    padding: var(--spacing-3xl) 0;
    background: var(--gray-100);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.course-card {
    background: var(--light-color);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    border: 1px solid var(--gray-200);
}

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

.course-card.featured {
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
}

.course-header {
    padding: var(--spacing-xl);
    background: var(--gradient-primary);
    color: var(--light-color);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.course-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.course-badge {
    background: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 20px;
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.course-content {
    padding: var(--spacing-xl);
}

.course-content p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.course-includes {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.course-includes li {
    padding: var(--spacing-xs) 0;
    color: var(--gray-700);
    position: relative;
    padding-left: var(--spacing-lg);
}

.course-includes li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.course-details {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
}

.duration, .format {
    background: var(--gray-100);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 6px;
    color: var(--gray-700);
    font-weight: 500;
}

/* Testimonials Section */
.testimonials {
    padding: var(--spacing-3xl) 0;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.testimonial-card {
    background: var(--light-color);
    padding: var(--spacing-2xl);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--primary-color);
}

.testimonial-content {
    margin-bottom: var(--spacing-lg);
}

.testimonial-content p {
    font-style: italic;
    color: var(--gray-700);
    line-height: 1.7;
    font-size: var(--font-size-lg);
}

.testimonial-author {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
}

.author-info h4 {
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--spacing-xs);
}

.author-info p {
    color: var(--gray-500);
    font-size: var(--font-size-sm);
}

/* Statistics Section */
.statistics {
    padding: var(--spacing-3xl) 0;
    background: var(--gradient-primary);
    color: var(--light-color);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.stat-label {
    font-size: var(--font-size-lg);
    opacity: 0.9;
}

/* Contact Section */
.contact {
    padding: var(--spacing-3xl) 0;
    background: var(--gray-100);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-info h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--gray-800);
}

.contact-info p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.6;
    font-size: var(--font-size-lg);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.contact-icon {
    font-size: var(--font-size-xl);
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-item h4 {
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--spacing-xs);
}

.contact-item p {
    color: var(--gray-600);
    margin: 0;
}

/* Contact Form */
.contact-form {
    background: var(--light-color);
    padding: var(--spacing-2xl);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--gray-700);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-300);
    border-radius: 8px;
    font-size: var(--font-size-base);
    transition: var(--transition-base);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* Footer */
.footer {
    background: var(--gray-800);
    color: var(--light-color);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--light-color);
}

.footer-section p {
    color: var(--gray-400);
    line-height: 1.6;
}

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

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section ul li a {
    color: var(--gray-400);
    text-decoration: none;
    transition: var(--transition-base);
}

.footer-section ul li a:hover {
    color: var(--light-color);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: var(--gray-400);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-2xl);
    }

    .benefits-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }

    .technologies-grid,
    .courses-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-image {
        transform: none;
    }

    .course-card.featured {
        transform: none;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-3xl: 2rem;
        --spacing-2xl: 1.5rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero-title {
        font-size: var(--font-size-2xl);
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .floating-card {
        display: none;
    }
}

/* Animaciones adicionales */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tech-card,
.course-card,
.testimonial-card {
    animation: fadeInUp 0.6s ease forwards;
}

.tech-card:nth-child(1) { animation-delay: 0.1s; }
.tech-card:nth-child(2) { animation-delay: 0.2s; }
.tech-card:nth-child(3) { animation-delay: 0.3s; }
.tech-card:nth-child(4) { animation-delay: 0.4s; }

/* Estados de carga */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Accesibilidad */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}