/* Oaklife Digital Inc. - Modern Corporate Design */
:root {
    --bg-color: #0d1117;
    --card-bg: #161b22;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --accent-primary: #238636;
    /* Green accent */
    --accent-secondary: #1f6feb;
    /* Blue accent */
    --accent-gradient: linear-gradient(135deg, #238636 0%, #1f6feb 100%);
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --max-width: 1200px;
}

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s ease;
}

ul {
    list-style: none;
}

/* Layout Utilities */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 80px 0;
}

/* Header */
header {
    padding: 30px 0;
    background: rgba(13, 17, 23, 0.8);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.nav-links {
    display: flex;
    gap: 24px;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

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

.brand {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

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

/* Hero Section */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    padding-top: 60px;
    /* Offset for header */
}

/* Background glow effect */
.hero::before {
    content: '';
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translate(-50%, -20%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(31, 111, 235, 0.15) 0%, rgba(13, 17, 23, 0) 70%);
    z-index: -1;
    pointer-events: none;
}

.hero h1 {
    font-size: 4rem;
    /* Big impact */
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.03em;
}

.hero-bg {
    background-image: linear-gradient(rgba(13, 17, 23, 0.8), rgba(13, 17, 23, 0.9)), url('tennis_background.png');
    background-size: cover;
    background-position: center;
}

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

.hero p {
    font-size: 1.5rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
}

/* Products Section */
.products-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    margin-top: 40px;
    width: 60%;
    margin-left: auto;
    margin-right: auto
}

.product-card {
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 40px;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    text-align: left;
}

.product-card:hover {
    transform: translateY(-5px);
    border-color: rgba(31, 111, 235, 0.3);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.product-card h3 {
    font-size: 2rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.product-card .tag {
    display: inline-block;
    background: rgba(35, 134, 54, 0.2);
    color: #3fb950;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.product-card p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 1.125rem;
}

.product-features li {
    display: flex;
    align-items: center;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.product-features li::before {
    content: '→';
    color: var(--accent-secondary);
    margin-right: 12px;
    font-weight: bold;
}

.product-link {
    display: inline-block;
    margin-top: 24px;
    color: var(--accent-secondary);
    font-weight: 600;
    font-size: 1.125rem;
}

.product-link:hover {
    text-decoration: underline;
}

/* Technology Section */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.tech-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 24px;
    text-align: center;
    transition: background 0.2s ease;
}

.tech-item:hover {
    background: rgba(255, 255, 255, 0.06);
}

.tech-item h4 {
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 500;
}

/* Footer & Company Info */
footer {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 60px 0;
    margin-top: 80px;
}

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

.footer-info p {
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.copyright {
    margin-top: 40px;
    font-size: 0.875rem;
    color: #484f58;
}

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

    .hero p {
        font-size: 1.125rem;
    }

    .products-grid {
        width: 100%;
        grid-template-columns: 1fr;
    }

    .section {
        padding: 60px 0;
    }
}