/* NVIDIA-inspired Theme */
:root {
    --primary-color: #76b900; /* NVIDIA Green */
    --bg-dark: #000000;
    --bg-card: #1a1a1a;
    --text-main: #ffffff;
    --text-dim: #b3b3b3;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* Header & Nav */
header {
    background: rgba(0, 0, 0, 0.9);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid #333;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

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

.mobile-menu-btn {
    display: none;
    cursor: pointer;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: radial-gradient(circle at center, #1a1a1a 0%, #000000 100%);
    padding: 0 5%;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1rem;
    background: linear-gradient(to right, #fff, var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-dim);
    max-width: 800px;
    margin-bottom: 2rem;
}

.btn {
    padding: 12px 30px;
    background-color: var(--primary-color);
    color: #000;
    font-weight: bold;
    border-radius: 4px;
    transition: var(--transition);
}

.btn:hover {
    background-color: #8ade00;
    transform: translateY(-2px);
}

/* Sections */
section {
    padding: 80px 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    margin: 10px auto;
}

/* Grid Layouts */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid #333;
    transition: var(--transition);
}

.card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

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

/* Footer */
footer {
    background: #0a0a0a;
    padding: 60px 5% 20px;
    border-top: 1px solid #333;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 40px;
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid #222;
    padding-top: 20px;
    font-size: 0.9rem;
    color: var(--text-dim);
}

.footer-links {
    margin-top: 10px;
}

.footer-links a {
    margin: 0 10px;
    font-size: 0.8rem;
}

/* Forms */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info div {
    margin-bottom: 1.5rem;
}

.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 12px;
    margin-bottom: 1rem;
    background: #222;
    border: 1px solid #444;
    color: #fff;
    border-radius: 4px;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .hero h1 {
        font-size: 2.5rem;
    }
    .contact-container {
        grid-template-columns: 1fr;
    }
}