/* NVIDIA Official Brand Colors */
:root {
    --nvidia-green: #76B900;
    --nvidia-black: #000000;
    --nvidia-dark-gray: #1a1a1a;
    --nvidia-medium-gray: #333333;
    --nvidia-light-gray: #f5f5f5;
    --nvidia-white: #ffffff;
    --nvidia-green-hover: #5a9100;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--nvidia-medium-gray);
    background-color: var(--nvidia-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navigation */
header {
    background-color: var(--nvidia-black);
    color: var(--nvidia-white);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

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

.logo h1 {
    color: var(--nvidia-green);
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 0.2rem;
}

.logo .tagline {
    color: var(--nvidia-white);
    font-size: 0.85rem;
    opacity: 0.9;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--nvidia-white);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 0.5rem 1rem;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--nvidia-black) 0%, var(--nvidia-dark-gray) 100%);
    color: var(--nvidia-white);
    padding: 6rem 0;
    text-align: center;
}

.hero-content h2 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: var(--nvidia-green);
    font-weight: 700;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    color: var(--nvidia-light-gray);
    line-height: 1.8;
}

.cta-button {
    display: inline-block;
    background-color: var(--nvidia-green);
    color: var(--nvidia-white);
    padding: 1rem 2.5rem;
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 4px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.cta-button:hover {
    background-color: var(--nvidia-green-hover);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(118, 185, 0, 0.3);
}

/* Section Styling */
.news-section,
.products-section,
.about-section,
.events-section {
    padding: 4rem 0;
}

.section-title {
    font-size: 2.5rem;
    color: var(--nvidia-black);
    margin-bottom: 3rem;
    text-align: center;
    font-weight: 700;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background-color: var(--nvidia-green);
    margin: 1rem auto;
}

/* News Grid */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.news-card {
    background-color: var(--nvidia-white);
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border-color: var(--nvidia-green);
}

.news-card.featured {
    grid-column: span 2;
    background: linear-gradient(135deg, var(--nvidia-dark-gray) 0%, var(--nvidia-black) 100%);
    color: var(--nvidia-white);
    border: none;
}

.news-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background-color: var(--nvidia-green);
    color: var(--nvidia-white);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.news-card h3 {
    color: var(--nvidia-black);
    font-size: 1.5rem;
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.news-card.featured h3 {
    color: var(--nvidia-green);
    font-size: 1.8rem;
}

.news-date {
    color: var(--nvidia-green);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.news-card p {
    line-height: 1.7;
    color: var(--nvidia-medium-gray);
}

.news-card.featured p {
    color: var(--nvidia-light-gray);
}

.news-highlight {
    margin-top: 1rem;
    padding: 1rem;
    background-color: rgba(118, 185, 0, 0.1);
    border-left: 4px solid var(--nvidia-green);
    font-weight: 500;
}

/* Products Grid */
.products-section {
    background-color: var(--nvidia-light-gray);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.product-card {
    background-color: var(--nvidia-white);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.product-card:hover {
    border-color: var(--nvidia-green);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.product-card h3 {
    color: var(--nvidia-green);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.product-card p {
    color: var(--nvidia-medium-gray);
    line-height: 1.7;
}

/* About Section */
.about-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: var(--nvidia-medium-gray);
}

.stats {
    display: flex;
    justify-content: space-around;
    margin-top: 3rem;
    flex-wrap: wrap;
    gap: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-item h3 {
    font-size: 3rem;
    color: var(--nvidia-green);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: var(--nvidia-medium-gray);
    font-size: 1rem;
    font-weight: 500;
}

/* Events Section */
.events-section {
    background-color: var(--nvidia-light-gray);
}

.events {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.event-card {
    background-color: var(--nvidia-white);
    padding: 2rem;
    border-radius: 8px;
    border-left: 5px solid var(--nvidia-green);
    transition: all 0.3s ease;
}

.event-card:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.event-card h3 {
    color: var(--nvidia-black);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.event-date {
    color: var(--nvidia-green);
    font-weight: 600;
    margin-bottom: 1rem;
    font-size: 1rem;
}

.event-card p {
    line-height: 1.7;
}

/* Footer */
footer {
    background-color: var(--nvidia-black);
    color: var(--nvidia-white);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: var(--nvidia-green);
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--nvidia-white);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--nvidia-green);
}

.footer-bottom {
    border-top: 1px solid var(--nvidia-medium-gray);
    padding-top: 1.5rem;
    text-align: center;
    color: var(--nvidia-light-gray);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
    }

    .hero-content h2 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .news-card.featured {
        grid-column: span 1;
    }

    .news-grid,
    .products-grid,
    .events {
        grid-template-columns: 1fr;
    }

    .stats {
        flex-direction: column;
    }
}