/* === Daily Digest — Custom Theme ===
   Designed for fast reading, minimal noise, source-aware colors. */

:root {
  --fg: #0f172a;
  --fg-muted: #64748b;
  --bg: #fafaf7;
  --card: #ffffff;
  --border: #e5e7eb;
  --accent: #4f46e5;
  --accent-hover: #4338ca;

  /* Source colors */
  --bluesky: #1185fe;
  --mastodon: #6364ff;
  --hn: #ff6600;
  --reddit: #ff4500;
  --rss: #f97316;

  --max-width: 760px;
  --radius: 12px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #f1f5f9;
    --fg-muted: #94a3b8;
    --bg: #0f172a;
    --card: #1e293b;
    --border: #334155;
    --accent: #818cf8;
    --accent-hover: #a5b4fc;
  }
}

* { box-sizing: border-box; }

html {
  font-size: 17px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.65;
  color: var(--fg);
  background: var(--bg);
  margin: 0;
  font-feature-settings: "kern", "liga", "calt";
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* === Header === */
.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background-color: rgba(255, 255, 255, 0.85);
}

@media (prefers-color-scheme: dark) {
  .site-header { background-color: rgba(30, 41, 59, 0.85); }
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--fg);
  text-decoration: none;
}

.site-title .logo { font-size: 1.5rem; }

.site-nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.9rem;
}

.site-nav a {
  color: var(--fg-muted);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.15s;
}

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

/* === Main === */
.site-main { padding: 2.5rem 0 4rem; min-height: 70vh; }

/* === Hero === */
.hero {
  text-align: center;
  margin-bottom: 3rem;
  padding: 0 0.5rem;
}

.hero h1 {
  font-size: 2.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  background: linear-gradient(135deg, #4f46e5 0%, #ec4899 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero .lead {
  font-size: 1.125rem;
  color: var(--fg-muted);
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.6;
}

/* === Latest Card === */
.latest { margin-bottom: 3rem; }

.latest-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-md);
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}

.latest-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(0,0,0,0.08);
  border-color: var(--accent);
}

.latest-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: rgba(79, 70, 229, 0.1);
  padding: 0.25rem 0.625rem;
  border-radius: 999px;
  margin-bottom: 0.75rem;
}

.latest-card h2 {
  font-size: 1.5rem;
  margin: 0 0 0.5rem;
  font-weight: 700;
}

.latest-card time {
  font-size: 0.9rem;
  color: var(--fg-muted);
}

/* === Archive list === */
.archive-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--fg-muted);
  margin: 0 0 1rem;
}

.post-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.post-list li {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 0.625rem 0;
  border-bottom: 1px solid var(--border);
}

.post-list li:last-child { border-bottom: none; }

.post-list time {
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
  font-size: 0.85rem;
  color: var(--fg-muted);
  width: 90px;
}

.post-list a {
  color: var(--fg);
  text-decoration: none;
  font-weight: 500;
}

.post-list a:hover { color: var(--accent); text-decoration: underline; }

/* === Pagination === */
.pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
}

.pagination a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.pagination a:hover { text-decoration: underline; }

.muted { color: var(--fg-muted); font-size: 0.9rem; }

/* === Post page === */
.post-header {
  margin-bottom: 2.5rem;
  text-align: center;
}

.post-date {
  font-size: 0.85rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
}

.post-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.015em;
  margin: 0;
  line-height: 1.2;
}

.post-content { font-size: 1.05rem; }

.post-content h1, .post-content h2, .post-content h3 {
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.post-content h1 { font-size: 1.65rem; }
.post-content h2 { font-size: 1.4rem; }
.post-content h3 {
  font-size: 1.2rem;
  padding-bottom: 0.25rem;
  border-bottom: 2px solid var(--border);
}

.post-content p { margin: 1rem 0 1.25rem; }

.post-content ul, .post-content ol {
  padding-left: 1.5rem;
  margin: 1rem 0;
}

.post-content li { margin: 0.4rem 0; }

.post-content a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 70, 229, 0.3);
  transition: border-color 0.15s;
}

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

.post-content blockquote {
  margin: 1.25rem 0;
  padding: 0.75rem 1.25rem;
  border-left: 3px solid var(--accent);
  background: var(--card);
  color: var(--fg-muted);
  font-style: italic;
  border-radius: 0 6px 6px 0;
}

.post-content code {
  background: var(--card);
  padding: 0.125rem 0.375rem;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: "SF Mono", Menlo, Monaco, "Cascadia Code", Consolas, monospace;
}

.post-content pre {
  background: var(--card);
  padding: 1rem;
  border-radius: 8px;
  overflow-x: auto;
  border: 1px solid var(--border);
}

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

.post-content table {
  border-collapse: collapse;
  width: 100%;
  margin: 1rem 0;
  font-size: 0.95rem;
}

.post-content th, .post-content td {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

.post-content th { font-weight: 700; color: var(--fg); }

/* === Post navigation === */
.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.post-nav a {
  display: flex;
  flex-direction: column;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  color: var(--fg);
  transition: border-color 0.15s, transform 0.15s;
}

.post-nav a:hover { border-color: var(--accent); transform: translateY(-1px); }

.post-nav .next { grid-column: 2; text-align: right; }
.post-nav .prev { grid-column: 1; }

/* === Source pills === */
.source-pill {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.125rem 0.5rem;
  border-radius: 999px;
  margin: 0 0.125rem;
  white-space: nowrap;
}

.source-pill.bluesky  { background: rgba(17, 133, 254, 0.12); color: var(--bluesky); }
.source-pill.mastodon { background: rgba(99, 100, 255, 0.12); color: var(--mastodon); }
.source-pill.hn       { background: rgba(255, 102, 0, 0.12); color: var(--hn); }
.source-pill.reddit   { background: rgba(255, 69, 0, 0.12); color: var(--reddit); }
.source-pill.rss      { background: rgba(249, 115, 22, 0.12); color: var(--rss); }

/* === Footer === */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--card);
  padding: 2rem 0;
  text-align: center;
  font-size: 0.9rem;
  color: var(--fg-muted);
}

.site-footer p { margin: 0.5rem 0; }
.site-footer a { color: var(--accent); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }

/* === Mobile === */
@media (max-width: 640px) {
  html { font-size: 16px; }
  .hero h1 { font-size: 2.25rem; }
  .post-title { font-size: 1.65rem; }
  .post-list li { flex-direction: column; gap: 0.25rem; }
  .post-list time { width: auto; }
  .post-nav { grid-template-columns: 1fr; }
  .post-nav .next, .post-nav .prev { grid-column: 1; text-align: left; }
  .site-nav { gap: 0.875rem; font-size: 0.85rem; }
}