/* Nebula Framework Design System */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --bg-dark: #090a16;
    --bg-darker: #050508;
    --primary: #7c3aed; /* Violet */
    --secondary: #2563eb; /* Blue */
    --accent: #06b6d4; /* Cyan */
    --text-main: #ffffff;
    --text-muted: #94a3b8;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.05);
    --glass-highlight: rgba(255, 255, 255, 0.1);
    --gradient-main: linear-gradient(135deg, #7c3aed 0%, #2563eb 50%, #06b6d4 100%);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

code, pre {
    font-family: 'JetBrains Mono', monospace;
}

/* Background Effects */
.nebula-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: 
        radial-gradient(circle at 15% 50%, rgba(124, 58, 237, 0.15) 0%, transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(37, 99, 235, 0.15) 0%, transparent 25%);
    pointer-events: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
}

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

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

section {
    padding: 6rem 0;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
}

header.scrolled {
    background: rgba(9, 10, 22, 0.8);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-primary {
    background: var(--gradient-main);
    color: white;
    box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(124, 58, 237, 0.4);
}

.btn-outline {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
}

.btn-outline:hover {
    border-color: var(--primary);
    background: var(--glass-highlight);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 5rem;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 9999px;
    font-size: 0.875rem;
    color: var(--accent);
    margin-bottom: 1.5rem;
    backdrop-filter: blur(5px);
}

.hero h1 {
    font-size: 4.5rem;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 2rem;
    border-radius: 1rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

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

.feature-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.75rem;
    background: rgba(124, 58, 237, 0.1);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Code Preview Section */
.code-preview {
    background: #0d0e1b;
    border-radius: 1rem;
    border: 1px solid var(--glass-border);
    overflow: hidden;
    margin-top: 4rem;
    box-shadow: 0 20px 50px rgba(0,0,0,0.3);
}

.code-header {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    background: rgba(255,255,255,0.02);
    border-bottom: 1px solid var(--glass-border);
}

.window-controls {
    display: flex;
    gap: 0.5rem;
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.control.close { background: #ff5f56; }
.control.minimize { background: #ffbd2e; }
.control.maximize { background: #27c93f; }

.code-title {
    margin-left: 1rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

.code-content {
    padding: 1.5rem;
    overflow-x: auto;
}

.code-content pre {
    color: #e2e8f0;
    font-size: 0.9rem;
}

/* Architecture Section */
.architecture-diagram {
    position: relative;
    padding: 4rem;
    background: var(--glass-bg);
    border-radius: 1.5rem;
    border: 1px solid var(--glass-border);
    text-align: center;
    margin-top: 3rem;
}

.arch-layer {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 1.5rem;
    border-radius: 0.75rem;
    margin-bottom: 1.5rem;
}

.arch-layer h4 {
    margin-bottom: 1rem;
    color: var(--accent);
}

.arch-modules {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

.module {
    padding: 0.5rem 1rem;
    background: rgba(0,0,0,0.3);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    border: 1px solid transparent;
}

.module:hover {
    border-color: var(--primary);
    color: var(--text-main);
}

/* Footer */
footer {
    border-top: 1px solid var(--glass-border);
    padding: 4rem 0 2rem;
    margin-top: 4rem;
    background: rgba(5, 5, 8, 0.8);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--text-muted);
    max-width: 300px;
}

.footer-col h4 {
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

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

.footer-col ul li {
    margin-bottom: 0.75rem;
}

.footer-col a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

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

.copyright {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--glass-border);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Utilities */
.text-center { text-align: center; }
.mb-4 { margin-bottom: 1rem; }
.mt-4 { margin-top: 1rem; }

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 3rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .nav-links {
        display: none; /* simple mobile hide for now */
    }
}