:root {
    --bg-color: #0f172a;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --accent-color: #38bdf8;
    --card-bg: #1e293b;
    --border-color: #334155;
    --nav-bg: rgba(15, 23, 42, 0.8);
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
}

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

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

/* Typography */
h1,
h2,
h3 {
    font-weight: 700;
    letter-spacing: -0.025em;
}

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

/* Layout */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 100px 0;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--nav-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.25) 0%, transparent 70%);
    padding: 6px 8px;
    border-radius: 12px;
    backdrop-filter: blur(8px);
}

.logo:hover {
    background: var(--border-color);
}

.logo img {
    height: 52px;
}

.nav-links {
    display: flex;
    gap: 30px;
}

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

.github-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-weight: 500;
}

.github-link:hover {
    background: var(--border-color);
}

/* Hero Section */
.hero {
    padding-top: 180px;
    text-align: center;
}

.hero-logo {
    width: 250px;
    height: auto;
    margin-bottom: 40px;
    padding: 30px;
    background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.25) 0%, transparent 70%);
    border-radius: 20px;
    filter: drop-shadow(0 0 50px rgba(255, 255, 255, 0.5)) drop-shadow(0 0 100px rgba(255, 255, 255, 0.3));
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 20px;
    background: linear-gradient(to right, #f8fafc, #94a3b8);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 40px;
}

.cta-button {
    display: inline-block;
    padding: 14px 32px;
    background: var(--text-color);
    color: var(--bg-color);
    border-radius: 12px;
    font-weight: 600;
    font-size: 1.125rem;
    transition: transform 0.2s, background 0.2s;
}

.cta-button:hover {
    transform: translateY(-2px);
    background: #e2e8f0;
}

.hero-mockup {
    margin-top: 60px;
    position: relative;
}

.hero-mockup img {
    max-width: 100%;
    border-radius: 20px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.feature-card {
    padding: 40px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    transition: border-color 0.2s;
}

.feature-card:hover {
    border-color: var(--accent-color);
}

.feature-card h3 {
    margin: 20px 0 10px;
    font-size: 1.5rem;
}

.feature-card p {
    color: var(--text-muted);
}

/* Installation */
.setup-steps {
    max-width: 800px;
    margin: 60px auto 0;
}

.step {
    display: flex;
    gap: 30px;
    margin-bottom: 60px;
}

.step-num {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: var(--accent-color);
    color: var(--bg-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
}

.step-content h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.step-content p {
    color: var(--text-muted);
}

.step-content code {
    background: rgba(0, 0, 0, 0.3);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
}

/* Footer */
footer {
    padding: 60px 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-muted);
}

footer a {
    color: var(--accent-color);
    font-weight: 700;
    text-decoration: underline;
    text-underline-offset: 4px;
}

footer a:hover {
    color: var(--text-color);
}

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

    .nav-links {
        display: none;
    }

    .step {
        flex-direction: column;
        gap: 15px;
    }
}