:root {
    --bg-color: #0f172a;
    --surface-color: #1e293b;
    --primary-color: #38bdf8;
    --secondary-color: #818cf8;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #f472b6;
    --font-main: 'Inter', sans-serif;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    --border-radius: 12px;
    --transition-speed: 0.3s;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-speed);
}

ul {
    list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

/* Layout Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-xl) 0;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    border-radius: var(--border-radius);
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(56, 189, 248, 0.25);
}

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

.btn-outline:hover {
    background: rgba(56, 189, 248, 0.1);
}

/* Header */
header {
    background-color: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding: var(--spacing-md) 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
}

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

.hamburger {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.15), transparent 70%);
    top: -100px;
    right: -100px;
    z-index: -1;
}

.hero-content {
    max-width: 600px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.tagline {
    color: var(--primary-color);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
    display: block;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about-image {
    width: 100%;
    aspect-ratio: 1;
    background: var(--surface-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    position: relative;
}

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

.stat-item {
    background: var(--surface-color);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* Activities Preview */
.activities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.card {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform var(--transition-speed);
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-5px);
    border-color: rgba(56, 189, 248, 0.3);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--secondary-color);
}

.card h3 {
    font-size: 1.25rem;
}

.card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

/* Gallery Preview */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.gallery-item {
    aspect-ratio: 16/9;
    background: var(--surface-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    cursor: pointer;
    position: relative;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.05);
}

/* Footer */
footer {
    background: var(--surface-color);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.footer-links a {
    color: var(--text-secondary);
    margin-left: var(--spacing-lg);
}

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

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

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

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--surface-color);
        flex-direction: column;
        padding: var(--spacing-lg);
        text-align: center;
    }

    .nav-links.active {
        display: flex;
    }

    .hamburger {
        display: block;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-links a {
        margin: 0 var(--spacing-md);
    }
}