:root {
    color-scheme: light dark;
    --font-sans: 'Inter Variable', Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'JetBrains Mono Variable', "JetBrains Mono", "Fira Code", monospace;
    --color-bg: #ffffff;
    --color-fg: #09090b;
    --color-muted: #71717a;
    --color-muted-bg: #f4f4f5;
    --color-border: #e4e4e7;
    --color-primary: #f97316;
    --color-primary-hover: #ea580c;
    --color-accent-bg: rgba(249, 115, 22, 0.08);
    --color-accent-border: rgba(249, 115, 22, 0.2);
    --radius: 10px;
    --max-width: 1120px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #09090b;
        --color-fg: #fafafa;
        --color-muted: #a1a1aa;
        --color-muted-bg: #18181b;
        --color-border: #27272a;
        --color-primary: #f97316;
        --color-accent-bg: rgba(249, 115, 22, 0.12);
        --color-accent-border: rgba(249, 115, 22, 0.3);
    }
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--font-sans);
    color: var(--color-fg);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

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

code,
pre {
    font-family: var(--font-mono);
    font-size: 0.875em;
}

.site-shell {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ---- Navbar ---- */
.site-navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    height: 56px;
    padding: 0 1.5rem;
    background: color-mix(in srgb, var(--color-bg) 82%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.site-navbar-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-fg);
    font-weight: 700;
    font-size: 1.05rem;
}

.site-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: 7px;
    background: linear-gradient(135deg, #f97316, #ef4444);
    color: #fff;
    font-weight: 800;
    font-size: 1rem;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-left: auto;
}

.site-nav a {
    color: var(--color-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

.site-nav a:hover {
    color: var(--color-fg);
}

/* ---- Hero ---- */
.hero {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 5rem 1.5rem 3rem;
    text-align: center;
}

.hero-badge {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    border: 1px solid var(--color-accent-border);
    border-radius: 999px;
    background: var(--color-accent-bg);
    color: var(--color-primary);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: clamp(2.4rem, 6vw, 4rem);
    line-height: 1.08;
    letter-spacing: -0.03em;
    margin: 0 0 1rem;
}

.hero-subtitle {
    max-width: 640px;
    margin: 0 auto 2rem;
    color: var(--color-muted);
    font-size: 1.15rem;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 3rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    color: #fff;
}

.btn-secondary {
    border: 1px solid var(--color-border);
    color: var(--color-fg);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
}

.hero-code {
    max-width: 680px;
    margin: 0 auto;
    padding: 1.25rem 1.5rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-muted-bg);
    text-align: left;
    overflow-x: auto;
}

/* ---- Feature grid ---- */
.features {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1.5rem 4rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

.feature-card {
    display: block;
    padding: 1.4rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-fg);
    transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

.feature-card:hover {
    border-color: var(--color-primary);
    color: var(--color-fg);
    transform: translateY(-2px);
    box-shadow: 0 12px 24px -12px rgba(0, 0, 0, 0.25);
}

.feature-card h3 {
    margin: 0 0 0.4rem;
    font-size: 1.05rem;
}

.feature-card p {
    margin: 0;
    color: var(--color-muted);
    font-size: 0.92rem;
}

/* ---- CTA band ---- */
.cta-band {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 3rem 1.5rem 5rem;
    text-align: center;
}

.cta-band h2 {
    font-size: 2rem;
    margin: 0 0 0.5rem;
}

.cta-band p {
    color: var(--color-muted);
}

.cta-band pre {
    max-width: 640px;
    margin: 1.5rem auto 2rem;
    padding: 1rem 1.25rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-muted-bg);
    text-align: left;
    overflow-x: auto;
}

/* ---- Footer ---- */
.site-footer {
    margin-top: auto;
    border-top: 1px solid var(--color-border);
    padding: 1.5rem;
}

.site-footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    color: var(--color-muted);
    font-size: 0.85rem;
}

/* ---- 404 ---- */
.not-found {
    max-width: 560px;
    margin: 0 auto;
    padding: 6rem 1.5rem;
    text-align: center;
}

.not-found-code {
    font-size: 4rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
}

@media (max-width: 640px) {
    .site-nav {
        gap: 0.75rem;
    }

    .site-navbar-name {
        display: none;
    }
}