:root {
    --bg: #0f0f0f;
    --bg-surface: #1a1a1a;
    --text: #d4d4d4;
    --text-muted: #777;
    --accent: #e8922a;
    --accent-hover: #f0a030;
    --border: #242424;
}

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

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

/* ── Nav ───────────────────────────────────────────── */

.site-header {
    border-bottom: 1px solid var(--border);
    padding: 1.25rem 2rem;
}

.nav {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    color: var(--text);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.01em;
}

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

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

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    letter-spacing: 0.03em;
    transition: color 0.15s;
}

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

/* ── Main ──────────────────────────────────────────── */

.main {
    flex: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: 4rem 2rem;
    width: 100%;
}

/* ── Hero ──────────────────────────────────────────── */

.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: calc(100vh - 130px);
    gap: 0;
}

.hero h1 {
    font-size: 3.75rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text);
    line-height: 1.1;
    margin-bottom: 0.6rem;
}

.tagline {
    color: var(--accent);
    font-size: 0.8rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    margin-bottom: 3.5rem;
}

.hero-links {
    display: flex;
    gap: 1rem;
}

.hero-card {
    display: inline-block;
    padding: 0.75rem 2.25rem;
    border: 1px solid var(--border);
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.8rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    transition: border-color 0.15s, color 0.15s;
}

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

/* ── Blog list ─────────────────────────────────────── */

.page-header {
    margin-bottom: 3rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.page-header h1 {
    font-size: 1.75rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.post-list {
    display: flex;
    flex-direction: column;
}

.post-item {
    padding: 2rem 0;
    border-bottom: 1px solid var(--border);
}

.post-item:first-child {
    padding-top: 0;
}

.post-item h2 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.post-item h2 a {
    color: var(--text);
    text-decoration: none;
    transition: color 0.15s;
}

.post-item h2 a:hover {
    color: var(--accent);
}

.post-item time {
    color: var(--text-muted);
    font-size: 0.8rem;
    display: block;
    margin-bottom: 0.6rem;
    font-family: 'JetBrains Mono', monospace;
}

.post-item p {
    color: var(--text-muted);
    font-size: 0.925rem;
    line-height: 1.65;
}

.empty {
    color: var(--text-muted);
    font-size: 0.925rem;
}

/* ── Single post ───────────────────────────────────── */

.post {
    max-width: 680px;
}

.post-header {
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.post-header h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.post-header time {
    color: var(--text-muted);
    font-size: 0.8rem;
    font-family: 'JetBrains Mono', monospace;
}

.post-content {
    line-height: 1.8;
    font-size: 1rem;
}

.post-content h2 {
    font-size: 1.35rem;
    font-weight: 600;
    margin: 2.5rem 0 0.75rem;
    letter-spacing: -0.01em;
}

.post-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 2rem 0 0.5rem;
}

.post-content p {
    margin-bottom: 1.25rem;
    color: var(--text);
}

.post-content a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.15s;
}

.post-content a:hover {
    border-bottom-color: var(--accent);
}

.post-content code {
    font-family: 'JetBrains Mono', monospace;
    background: var(--bg-surface);
    padding: 0.15em 0.45em;
    border-radius: 3px;
    font-size: 0.85em;
    color: var(--accent);
}

.post-content pre {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    padding: 1.25rem 1.5rem;
    border-radius: 4px;
    overflow-x: auto;
    margin-bottom: 1.5rem;
}

.post-content pre code {
    background: none;
    padding: 0;
    color: var(--text);
    font-size: 0.875rem;
}

.post-content ul,
.post-content ol {
    margin-bottom: 1.25rem;
    padding-left: 1.5rem;
}

.post-content li {
    margin-bottom: 0.35rem;
}

.post-content blockquote {
    border-left: 2px solid var(--accent);
    padding-left: 1.25rem;
    margin: 1.75rem 0;
    color: var(--text-muted);
    font-style: italic;
}

.post-content hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2.5rem 0;
}

.back-link {
    display: inline-block;
    margin-top: 3rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.15s;
}

.back-link:hover {
    color: var(--accent);
}

/* ── Projects / generic page ───────────────────────── */

.page-content {
    line-height: 1.8;
    max-width: 680px;
}

.page-content h2 {
    font-size: 1.35rem;
    font-weight: 600;
    margin: 2.5rem 0 0.75rem;
    letter-spacing: -0.01em;
}

.page-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 2rem 0 0.5rem;
}

.page-content p {
    margin-bottom: 1.25rem;
}

.page-content a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.15s;
}

.page-content a:hover {
    border-bottom-color: var(--accent);
}

.page-content ul,
.page-content ol {
    margin-bottom: 1.25rem;
    padding-left: 1.5rem;
}

.page-content li {
    margin-bottom: 0.35rem;
}

.page-content hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2.5rem 0;
}

/* ── Footer ────────────────────────────────────────── */

.site-footer {
    border-top: 1px solid var(--border);
    padding: 1.5rem 2rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.775rem;
    letter-spacing: 0.03em;
}

/* ── Responsive ────────────────────────────────────── */

@media (max-width: 640px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-links {
        flex-direction: column;
        width: 100%;
        max-width: 240px;
    }

    .hero-card {
        text-align: center;
    }

    .main {
        padding: 2.5rem 1.25rem;
    }

    .site-header {
        padding: 1rem 1.25rem;
    }
}