@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700&family=Inter:wght@300;400;500;600&display=swap');

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

:root {
    --primary: #1a1a2e;
    --secondary: #16213e;
    --accent: #0f3460;
    --gold: #d4af37;
    --light: #f8f9fa;
    --white: #ffffff;
    --gray: #6c757d;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--primary);
    background-color: var(--white);
    overflow-x: hidden;
}

h1, h2, h3 {
    font-family: 'Playfair Display', serif;
    font-weight: 600;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
header {
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
}

.logo {
    font-family: 'Playfair Display', serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 3rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--primary);
    font-weight: 400;
    font-size: 0.95rem;
    position: relative;
    transition: color 0.3s ease;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: -5px;
    left: 0;
    background-color: var(--gold);
    transition: width 0.3s ease;
}

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

.cta-button {
    background: var(--primary);
    color: var(--white);
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 4px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
}

.cta-button:hover {
    background: var(--secondary);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
    margin-top: 0;
}

.hero::before {
    content: '';
    position: absolute;
    width: 150%;
    height: 150%;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.1) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(50px, 50px) rotate(180deg); }
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
    animation: fadeInUp 1s ease;
}

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

.hero h1 {
    font-size: 4.5rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
    line-height: 1.2;
    font-weight: 600;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--gray);
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 300;
    line-height: 1.8;
}

.hero .cta-button {
    padding: 1rem 3rem;
    font-size: 1rem;
}

/* Features Section */
.features {
    padding: 8rem 0;
    background: var(--white);
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-header h2 {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto;
    font-weight: 300;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 3rem;
}

.feature-card {
    padding: 3rem 2rem;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 8px;
    transition: all 0.4s ease;
    background: var(--white);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    border-color: var(--gold);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    color: var(--white);
    font-size: 2rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

.feature-card p {
    color: var(--gray);
    line-height: 1.8;
    font-weight: 300;
}

/* Science Section */
.science {
    padding: 8rem 0;
    background: var(--light);
}

.science-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.science-text h2 {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
    color: var(--primary);
}

.science-text p {
    color: var(--gray);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-weight: 300;
}

.science-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    margin-top: 3rem;
}

.stat {
    text-align: left;
    padding: 1.5rem;
    background: var(--white);
    border-radius: 8px;
    border-left: 3px solid var(--gold);
}

.stat-number {
    font-size: 2.8rem;
    font-weight: 600;
    color: var(--primary);
    font-family: 'Playfair Display', serif;
    margin-bottom: 0.5rem;
}

.stat p {
    font-size: 0.9rem;
    color: var(--gray);
    margin: 0;
}

.science-image {
    position: relative;
}

.science-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

/* CTA Section */
.cta-section {
    padding: 8rem 0;
    background: var(--primary);
    color: var(--white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 30%, rgba(212, 175, 55, 0.1) 50%, transparent 70%);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.cta-section h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--white);
    position: relative;
    z-index: 2;
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: 3rem;
    opacity: 0.9;
    font-weight: 300;
    position: relative;
    z-index: 2;
}

.cta-section .cta-button {
    background: var(--white);
    color: var(--primary);
    padding: 1rem 3rem;
    font-size: 1rem;
    position: relative;
    z-index: 2;
}

.cta-section .cta-button:hover {
    background: var(--gold);
    color: var(--white);
}

/* Footer */
footer {
    background: var(--secondary);
    color: var(--white);
    padding: 4rem 0 2rem;
    text-align: center;
}

footer p {
    opacity: 0.8;
    margin-bottom: 0.5rem;
    font-weight: 300;
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero h1 {
        font-size: 3rem;
    }

    .nav-links {
        display: none;
    }

    .science-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .section-header h2 {
        font-size: 2.2rem;
    }

    .features {
        padding: 5rem 0;
    }

    .science {
        padding: 5rem 0;
    }

    .cta-section {
        padding: 5rem 0;
    }

    .cta-section h2 {
        font-size: 2rem;
    }
}

@media (max-width: 640px) {
    .hero h1 {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

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