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

:root {
    --primary: #2ecc71; --primary-dark: #27ae60; --secondary: #3498db;
    --dark: #2c3e50; --light: #ecf0f1; --white: #fff;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

html { scroll-behavior: smooth; }
body { font-family: 'Segoe UI', sans-serif; line-height: 1.6; color: #333; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header */
header { background: var(--white); box-shadow: 0 2px 10px rgba(0,0,0,0.1); position: sticky; top: 0; z-index: 1000; }
.navbar { padding: 1rem 0; }
.navbar .container { display: flex; justify-content: space-between; align-items: center; }
.logo { display: flex; align-items: center; gap: 0.5rem; color: var(--primary); }
.logo i { font-size: 2rem; }
.logo h1 { font-size: 1.8rem; font-weight: 700; }
.nav-menu { display: flex; list-style: none; gap: 2rem; }
.nav-menu a { text-decoration: none; color: #333; font-weight: 500; transition: 0.3s; display: flex; align-items: center; gap: 0.3rem; }
.nav-menu a:hover { color: var(--primary); }
.mobile-menu-toggle { display: none; background: none; border: none; font-size: 1.5rem; cursor: pointer; }

/* Hero */
.hero { background: var(--gradient); color: var(--white); padding: 120px 0 80px; text-align: center; position: relative; overflow: hidden; }
.hero-content { position: relative; z-index: 1; animation: fadeInUp 0.8s ease; }
.hero-badge { display: inline-block; background: rgba(255,255,255,0.2); padding: 0.5rem 1.5rem; border-radius: 50px; margin-bottom: 1rem; }
.hero h1 { font-size: 3.5rem; margin-bottom: 1rem; font-weight: 700; }
.hero-subtitle { font-size: 1.3rem; margin-bottom: 2.5rem; opacity: 0.95; max-width: 800px; margin-left: auto; margin-right: auto; }
.hero-buttons { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; margin-bottom: 2rem; }
.cta-button, .cta-button-outline { display: inline-flex; align-items: center; gap: 0.5rem; padding: 15px 35px; text-decoration: none; border-radius: 50px; font-size: 1.1rem; font-weight: 600; transition: 0.3s; }
.cta-button { background: var(--primary); color: var(--white); box-shadow: 0 4px 15px rgba(46,204,113,0.4); }
.cta-button:hover { background: var(--primary-dark); transform: translateY(-2px); }
.cta-button-outline { background: transparent; color: var(--white); border: 2px solid var(--white); }
.cta-button-outline:hover { background: var(--white); color: var(--primary); }
.disclaimer-small { margin-top: 2rem; font-size: 0.85rem; opacity: 0.8; font-style: italic; }
.scroll-indicator { position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%); animation: bounce 2s infinite; }

/* Stats */
.stats-section { padding: 60px 0; background: var(--white); }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 2rem; }
.stat-card { text-align: center; padding: 2rem; }
.stat-card i { font-size: 3rem; color: var(--primary); margin-bottom: 1rem; }
.stat-number { font-size: 3rem; font-weight: 700; color: var(--dark); }

/* Section Headers */
.section-header { text-align: center; margin-bottom: 3rem; }
.section-header h2 { font-size: 2.5rem; color: var(--dark); margin-bottom: 0.5rem; }
.section-header p { font-size: 1.1rem; color: #7f8c8d; }

/* Calculator */
.calculator-section { padding: 80px 0; background: var(--light); }
.calculator-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 3rem; max-width: 900px; margin: 0 auto; }
.calculator-card, .calculator-result { background: var(--white); padding: 2.5rem; border-radius: 15px; box-shadow: 0 4px 15px rgba(0,0,0,0.1); }
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: flex; align-items: center; gap: 0.5rem; font-weight: 600; margin-bottom: 0.5rem; }
.form-group input { width: 100%; padding: 12px; border: 2px solid #ddd; border-radius: 8px; font-size: 1rem; transition: 0.3s; }
.form-group input:focus { outline: none; border-color: var(--primary); }
.calc-button { width: 100%; padding: 15px; background: var(--primary); color: var(--white); border: none; border-radius: 8px; font-size: 1.1rem; font-weight: 600; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 0.5rem; transition: 0.3s; }
.calc-button:hover { background: var(--primary-dark); transform: translateY(-2px); }
.bmi-value { text-align: center; margin-bottom: 1rem; }
.bmi-value span { font-size: 4rem; font-weight: 700; color: var(--primary); }
.bmi-category { text-align: center; font-size: 1.5rem; font-weight: 600; padding: 0.5rem 1rem; border-radius: 50px; margin-bottom: 1rem; }
.bmi-category.underweight { background: #e3f2fd; color: #1976d2; }
.bmi-category.normal { background: #e8f5e9; color: #388e3c; }
.bmi-category.overweight { background: #fff3e0; color: #f57c00; }
.bmi-category.obese { background: #ffebee; color: #d32f2f; }
.bmi-scale { display: grid; grid-template-columns: repeat(auto-fit, minmax(100px, 1fr)); gap: 0.5rem; margin-top: 2rem; }
.scale-item { text-align: center; padding: 1rem 0.5rem; border-radius: 8px; }
.scale-item.underweight { background: #e3f2fd; }
.scale-item.normal { background: #e8f5e9; }
.scale-item.overweight { background: #fff3e0; }
.scale-item.obese { background: #ffebee; }
.scale-item span { display: block; font-weight: 600; margin-bottom: 0.25rem; }

/* About */
.about-section { padding: 80px 0; background: var(--white); }
.about-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.about-card { background: var(--white); padding: 2.5rem; border-radius: 15px; box-shadow: 0 4px 15px rgba(0,0,0,0.1); transition: 0.3s; border-top: 4px solid var(--primary); }
.about-card:hover { transform: translateY(-10px); }
.card-icon { width: 70px; height: 70px; background: var(--gradient); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin-bottom: 1.5rem; }
.card-icon i { font-size: 2rem; color: var(--white); }
.about-card h3 { color: var(--dark); margin-bottom: 1rem; font-size: 1.4rem; }

/* Program Timeline */
.program-section { padding: 80px 0; background: var(--light); }
.program-timeline { max-width: 800px; margin: 0 auto; position: relative; }
.program-timeline::before { content: ''; position: absolute; left: 40px; top: 0; bottom: 0; width: 4px; background: var(--primary); }
.timeline-item { display: flex; gap: 2rem; margin-bottom: 3rem; position: relative; }
.timeline-icon { width: 80px; height: 80px; background: var(--primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; box-shadow: 0 0 0 10px var(--light); position: relative; z-index: 1; }
.timeline-icon i { font-size: 2rem; color: var(--white); }
.timeline-content { background: var(--white); padding: 2rem; border-radius: 15px; box-shadow: 0 4px 15px rgba(0,0,0,0.1); flex: 1; }
.timeline-content h3 { color: var(--dark); margin-bottom: 0.5rem; font-size: 1.5rem; }
.phase-duration { color: var(--primary); font-weight: 600; margin-bottom: 1rem; display: flex; align-items: center; gap: 0.5rem; }
.timeline-content ul { list-style: none; }
.timeline-content ul li { padding: 0.5rem 0; padding-left: 1.5rem; position: relative; }
.timeline-content ul li::before { content: "✓"; color: var(--primary); font-weight: bold; position: absolute; left: 0; }

/* Tips */
.tips-section { padding: 80px 0; background: var(--white); }
.tips-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.tip-card { background: var(--white); padding: 2rem; border-radius: 15px; box-shadow: 0 4px 15px rgba(0,0,0,0.1); transition: 0.3s; position: relative; overflow: hidden; }
.tip-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--gradient); }
.tip-card:hover { transform: translateY(-5px); }
.tip-icon { width: 50px; height: 50px; background: var(--gradient); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; font-weight: 700; color: var(--white); margin-bottom: 1rem; }
.tip-card h3 { color: var(--dark); margin-bottom: 1rem; font-size: 1.2rem; }

/* FAQ */
.faq-section { padding: 80px 0; background: var(--light); }
.faq-container { max-width: 800px; margin: 0 auto; }
.faq-item { background: var(--white); margin-bottom: 1rem; border-radius: 10px; overflow: hidden; box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.faq-question { padding: 1.5rem; display: flex; justify-content: space-between; align-items: center; cursor: pointer; transition: 0.3s; }
.faq-question:hover { background: var(--light); }
.faq-question h3 { color: var(--dark); font-size: 1.1rem; margin: 0; }
.faq-question i { color: var(--primary); transition: 0.3s; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; padding: 0 1.5rem; }
.faq-item.active .faq-answer { max-height: 500px; padding: 0 1.5rem 1.5rem; }

/* CTA */
.cta-section { padding: 80px 0; background: var(--gradient); color: var(--white); text-align: center; }
.cta-section h2 { font-size: 2.5rem; margin-bottom: 1rem; }
.cta-section p { font-size: 1.2rem; margin-bottom: 2rem; }
.cta-button-large { display: inline-flex; align-items: center; gap: 0.5rem; background: var(--white); color: var(--primary); padding: 18px 45px; text-decoration: none; border-radius: 50px; font-size: 1.2rem; font-weight: 600; transition: 0.3s; }
.cta-button-large:hover { transform: translateY(-3px); }

/* Contact */
.contact-section { padding: 80px 0; background: var(--white); }
.contact-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 3rem; }
.contact-info { display: grid; gap: 1.5rem; }
.info-card { padding: 1.5rem; background: var(--light); border-radius: 10px; text-align: center; }
.info-card i { font-size: 2rem; color: var(--primary); margin-bottom: 0.5rem; }
.info-card h3 { color: var(--dark); margin-bottom: 0.5rem; }
.contact-form-wrapper { background: var(--light); padding: 2.5rem; border-radius: 15px; }
.contact-form-wrapper h3 { color: var(--dark); margin-bottom: 1.5rem; }
.contact-form input, .contact-form textarea { width: 100%; padding: 12px; border: 2px solid #ddd; border-radius: 8px; font-family: inherit; font-size: 1rem; margin-bottom: 1rem; transition: 0.3s; }
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--primary); }
.submit-button { background: var(--primary); color: var(--white); padding: 15px; border: none; border-radius: 8px; font-size: 1.1rem; font-weight: 600; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 0.5rem; width: 100%; transition: 0.3s; }
.submit-button:hover { background: var(--primary-dark); transform: translateY(-2px); }

/* Disclaimer */
.disclaimer-section { padding: 60px 0; background: #fff3cd; border-top: 3px solid #ffc107; border-bottom: 3px solid #ffc107; }
.disclaimer-content { text-align: center; }
.disclaimer-content i { font-size: 3rem; color: #f57c00; margin-bottom: 1rem; }
.disclaimer-content h3 { color: var(--dark); margin-bottom: 1rem; font-size: 1.5rem; }
.disclaimer-content p { margin-bottom: 1rem; line-height: 1.8; max-width: 900px; margin-left: auto; margin-right: auto; }
.disclaimer-content strong { color: #d32f2f; }

/* Footer */
footer { background: var(--dark); color: var(--white); padding: 60px 0 20px; }
.footer-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 2rem; margin-bottom: 2rem; }
.footer-logo { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 1rem; }
.footer-logo i { font-size: 2rem; color: var(--primary); }
.footer-logo h4 { font-size: 1.5rem; color: var(--primary); }
.footer-col h4 { margin-bottom: 1rem; color: var(--primary); }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 0.5rem; }
.footer-col a { color: var(--white); text-decoration: none; opacity: 0.8; transition: 0.3s; }
.footer-col a:hover { opacity: 1; color: var(--primary); }
.footer-bottom { text-align: center; padding-top: 2rem; border-top: 1px solid rgba(255,255,255,0.1); opacity: 0.8; }

/* Scroll to Top */
.scroll-top { position: fixed; bottom: 30px; right: 30px; width: 50px; height: 50px; background: var(--primary); color: var(--white); border: none; border-radius: 50%; font-size: 1.2rem; cursor: pointer; display: none; align-items: center; justify-content: center; box-shadow: 0 4px 15px rgba(0,0,0,0.2); transition: 0.3s; z-index: 999; }
.scroll-top.visible { display: flex; }
.scroll-top:hover { background: var(--primary-dark); transform: translateY(-5px); }

/* Animations */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes bounce { 0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); } 40% { transform: translateX(-50%) translateY(-10px); } }

/* Responsive */
@media (max-width: 768px) {
    .mobile-menu-toggle { display: block; }
    .nav-menu { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--white); flex-direction: column; padding: 1rem; box-shadow: 0 4px 15px rgba(0,0,0,0.1); }
    .nav-menu.active { display: flex; }
    .hero h1 { font-size: 2rem; }
    .hero-subtitle { font-size: 1rem; }
    .section-header h2 { font-size: 2rem; }
    .program-timeline::before { left: 30px; }
    .timeline-icon { width: 60px; height: 60px; }
}