/* ===== Design tokens (mirroring luis.land landing) ===== */
:root {
  --bg-primary:    #fafafa;
  --bg-secondary:  #f0f0f0;
  --text-primary:  #0a0a0b;
  --text-secondary:#52525b;
  --text-muted:    #a1a1aa;
  --accent-green:  #10b981;
  --border:        #e4e4e7;
  --font-main:     'Space Grotesk', system-ui, sans-serif;
  --font-pixel:    'Press Start 2P', monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary:    #0e0e10;
    --bg-secondary:  #1a1a1d;
    --text-primary:  #f0f0ee;
    --text-secondary:#a1a1aa;
    --text-muted:    #52525b;
    --border:        #27272a;
  }
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ===== Layout ===== */
.container {
  max-width: 680px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  flex: 1;
}

/* ===== Header / Nav ===== */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
}

.site-nav {
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-back {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s;
}
.nav-back:hover { color: var(--text-primary); }

.nav-title {
  font-family: var(--font-pixel);
  font-size: 0.65rem;
  color: var(--accent-green);
  text-decoration: none;
  letter-spacing: 0.05em;
}

/* ===== Post list ===== */
.page-title {
  font-family: var(--font-pixel);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  letter-spacing: 0.1em;
}

.post-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.post-item {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
}
.post-item:first-of-type { border-top: 1px solid var(--border); }

.post-date {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
  font-variant-numeric: tabular-nums;
}

.post-item-title a {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  line-height: 1.3;
}
.post-item-title a:hover { color: var(--accent-green); }

.post-summary {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.empty {
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 2rem 0;
}

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

.post-title {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  line-height: 1.2;
  margin-top: 0.5rem;
}

.post-content {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-primary);
}

.post-content h2,
.post-content h3,
.post-content h4 {
  margin: 2rem 0 0.75rem;
  font-weight: 600;
  line-height: 1.3;
}

.heading-anchor-wrapper {
  position: relative;
}

.heading-anchor {
  position: absolute;
  left: -1.25rem;
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 400;
  opacity: 0;
  transition: opacity 0.15s;
}

.heading-anchor-wrapper:hover .heading-anchor {
  opacity: 1;
}

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

.post-content a {
  color: var(--accent-green);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.post-content pre {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  overflow-x: auto;
  margin: 1.25rem 0;
  font-size: 0.875rem;
  line-height: 1.6;
}

.post-content code {
  font-size: 0.875em;
  background: color-mix(in srgb, var(--accent-green) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent-green) 30%, transparent);
  color: var(--accent-green);
  border-radius: 3px;
  padding: 0.1em 0.4em;
}

.post-content pre code {
  background: none;
  border: none;
  padding: 0;
}

.post-content blockquote {
  border-left: 3px solid var(--accent-green);
  padding-left: 1rem;
  color: var(--text-secondary);
  margin: 1.25rem 0;
}

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

.post-content li { margin-bottom: 0.4rem; }

.post-content img {
  max-width: 100%;
  border-radius: 6px;
  margin: 1.25rem 0;
}

.post-content hr {
  border: none;
  border-top: 1px solid var(--border);
  opacity: 0.4;
  margin: 2rem 0 2.5rem;
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0;
  font-size: 0.9rem;
}

.post-content th,
.post-content td {
  padding: 0.6rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.post-content th {
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 2px solid var(--border);
}

.post-content tr:last-child td {
  border-bottom: none;
}

.post-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.back-link {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-decoration: none;
}
.back-link:hover { color: var(--text-primary); }

/* ===== Footer ===== */
.site-footer {
  padding: 1.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}
.site-footer a {
  color: var(--text-muted);
  text-decoration: none;
}
.site-footer a:hover { color: var(--text-primary); }