/* ============================================
   CSS Variables & Reset
   ============================================ */
:root {
    --primary: #1a5f4a;
    --primary-dark: #134436;
    --primary-light: #2a7a62;
    --secondary: #c9a227;
    --secondary-light: #dbb84a;
    --dark: #1a1a2e;
    --light: #f8f9fa;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: 'DM Sans', system-ui, sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-700);
    background: var(--white);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ============================================
   Utility Classes
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--secondary);
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 600;
    color: var(--dark);
    line-height: 1.2;
}

.section-subtitle {
    font-size: 18px;
    color: var(--gray-500);
    margin-top: 8px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
}

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

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

.btn-outline {
    border: 2px solid var(--white);
    color: var(--white);
}

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

.btn-large {
    padding: 18px 36px;
    font-size: 16px;
}

.btn-full {
    width: 100%;
}

/* ============================================
   Header & Navigation
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.navbar {
    padding: 16px 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 18px;
    color: var(--primary);
}

.logo-icon {
    font-size: 28px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--gray-700);
    transition: var(--transition);
    position: relative;
}

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

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--dark);
    transition: var(--transition);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.08) 0%, transparent 40%),
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--white);
    max-width: 800px;
    padding: 0 24px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(255,255,255,0.15);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 1px;
    margin-bottom: 24px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(36px, 6vw, 56px);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 40px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 36px;
    font-weight: 700;
    color: var(--secondary);
}

.stat-label {
    font-size: 14px;
    opacity: 0.85;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--white);
    opacity: 0.7;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ============================================
   Colegio Section
   ============================================ */
#colegio {
    background: var(--light);
}

.colegio-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.colegio-lead {
    font-size: 20px;
    font-weight: 500;
    color: var(--dark);
    margin-bottom: 20px;
    line-height: 1.5;
}

.colegio-content p {
    margin-bottom: 24px;
    color: var(--gray-500);
}

.colegio-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-top: 32px;
}

.feature-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.feature-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.feature-text h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 4px;
}

.feature-text p {
    font-size: 14px;
    margin: 0;
}

.colegio-image {
    display: flex;
    justify-content: center;
}

.image-frame {
    width: 100%;
    max-width: 400px;
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
}

.placeholder-icon {
    font-size: 120px;
    opacity: 0.3;
}

/* ============================================
   Master Section
   ============================================ */
.master-section {
    background: var(--dark);
    color: var(--white);
}

.master-section .section-tag {
    color: var(--secondary);
}

.master-section .section-title {
    color: var(--white);
}

.master-section .section-subtitle {
    color: var(--gray-300);
}

.master-highlight {
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    border-radius: var(--radius-xl);
    padding: 48px;
    margin-bottom: 60px;
    border: 1px solid rgba(255,255,255,0.1);
}

.master-cta {
    text-align: center;
    margin-bottom: 48px;
}

.master-cta h3 {
    font-family: var(--font-display);
    font-size: 28px;
    margin-bottom: 16px;
}

.master-cta p {
    font-size: 18px;
    opacity: 0.85;
    max-width: 600px;
    margin: 0 auto 24px;
}

.master-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.master-stat {
    text-align: center;
    padding: 24px;
    background: rgba(255,255,255,0.05);
    border-radius: var(--radius-lg);
}

.stat-icon {
    font-size: 28px;
    display: block;
    margin-bottom: 8px;
}

.stat-value {
    display: block;
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 700;
    color: var(--secondary);
}

.stat-desc {
    font-size: 14px;
    opacity: 0.8;
}

.master-target {
    text-align: center;
    margin-bottom: 60px;
}

.master-target h3 {
    font-family: var(--font-display);
    font-size: 28px;
    margin-bottom: 32px;
}

.target-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.target-card {
    background: rgba(255,255,255,0.05);
    border-radius: var(--radius-lg);
    padding: 28px 20px;
    border: 1px solid rgba(255,255,255,0.1);
    transition: var(--transition);
}

.target-card:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-4px);
}

.target-icon {
    font-size: 36px;
    display: block;
    margin-bottom: 12px;
}

.target-card h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 8px;
}

.target-card p {
    font-size: 13px;
    opacity: 0.7;
}

.testimonials {
    text-align: center;
}

.testimonials h3 {
    font-family: var(--font-display);
    font-size: 28px;
    margin-bottom: 40px;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: rgba(255,255,255,0.05);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: left;
    border-left: 4px solid var(--secondary);
}

.testimonial-text {
    font-size: 15px;
    font-style: italic;
    opacity: 0.9;
    line-height: 1.6;
}

/* ============================================
   Programa Section
   ============================================ */
.program-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.program-module {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}

.program-module:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.module-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.module-number {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    opacity: 0.3;
}

.module-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
}

.module-content {
    list-style: none;
}

.module-content li {
    font-size: 14px;
    color: var(--gray-500);
    padding: 8px 0;
    border-bottom: 1px solid var(--gray-100);
    position: relative;
    padding-left: 16px;
}

.module-content li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--secondary);
}

.module-content li:last-child {
    border-bottom: none;
}

.program-cta {
    text-align: center;
    font-size: 16px;
    color: var(--gray-500);
}

.program-cta a {
    color: var(--primary);
    font-weight: 600;
}

.program-cta a:hover {
    text-decoration: underline;
}

/* ============================================
   Profesores Section
   ============================================ */
.teachers-section {
    background: var(--gray-100);
}

.teachers-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.teacher-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.teacher-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.teacher-avatar {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 700;
    color: var(--white);
    margin: 0 auto 16px;
}

.teacher-info h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 4px;
    line-height: 1.3;
}

.teacher-degree {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
}

.teacher-role {
    font-size: 13px;
    color: var(--gray-500);
    margin-bottom: 4px;
}

.teacher-company {
    font-size: 12px;
    color: var(--gray-500);
    font-style: italic;
}

/* ============================================
   FAQ Section
   ============================================ */
.faq-grid {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--gray-200);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    font-size: 17px;
    font-weight: 600;
    color: var(--dark);
    text-align: left;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--primary);
}

.faq-icon {
    font-size: 24px;
    font-weight: 300;
    color: var(--primary);
    transition: var(--transition);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-answer p {
    padding-bottom: 24px;
    color: var(--gray-500);
    line-height: 1.7;
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

/* ============================================
   Contacto Section
   ============================================ */
.contact-section {
    background: var(--light);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 15px;
    color: var(--gray-500);
}

.contact-item a {
    color: var(--primary);
    font-weight: 500;
}

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

.contact-social {
    display: flex;
    gap: 16px;
    margin-top: 16px;
}

.contact-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    transition: var(--transition);
}

.contact-social a:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.contact-form-wrapper {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

.contact-form h3 {
    font-family: var(--font-display);
    font-size: 24px;
    margin-bottom: 8px;
}

.contact-form > p {
    color: var(--gray-500);
    margin-bottom: 24px;
}

.form-group {
    position: relative;
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px;
    font-size: 15px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    background: var(--white);
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
}

.form-group label {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 15px;
    color: var(--gray-500);
    pointer-events: none;
    transition: var(--transition);
    background: var(--white);
    padding: 0 4px;
}

.form-group textarea ~ label {
    top: 16px;
    transform: none;
}

.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label {
    top: 0;
    font-size: 12px;
    color: var(--primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 60px 0 24px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    flex-wrap: wrap;
    gap: 24px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 16px;
    font-weight: 600;
}

.footer-brand .logo-icon {
    font-size: 32px;
}

.footer-links {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}

.footer-links a {
    font-size: 15px;
    color: var(--gray-300);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
}

.footer-bottom {
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: var(--gray-500);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .colegio-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .colegio-image {
        order: -1;
    }
    
    .master-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .target-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .program-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .teachers-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow-lg);
        transform: translateY(-150%);
        opacity: 0;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .hero-stats {
        gap: 24px;
    }
    
    .stat-number {
        font-size: 28px;
    }
    
    .master-highlight {
        padding: 32px 24px;
    }
    
    .master-stats-grid,
    .target-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .program-grid {
        grid-template-columns: 1fr;
    }
    
    .teachers-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .contact-form-wrapper {
        padding: 24px;
    }
}