/* ===========================
   Biographer — Minimal Blog
   =========================== */

:root {
  --bg:        #fafaf9;
  --surface:   #ffffff;
  --border:    #e5e5e3;
  --text:      #1a1a18;
  --muted:     #6b6b66;
  --accent:    #2563eb;
  --accent-h:  #1d4ed8;
  --font-sans: 'Georgia', 'Times New Roman', serif;
  --font-mono: 'Courier New', monospace;
  --max-w:     680px;
  --radius:    4px;
}

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

html { font-size: 18px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.75;
  padding: 0 1.5rem;
}

/* Layout */
.site-header, .site-main, .site-footer {
  max-width: var(--max-w);
  margin: 0 auto;
}

/* Header */
.site-header {
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 3rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-name {
  font-size: 1.3rem;
  font-weight: bold;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--text);
}

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

.site-nav { display: flex; gap: 1.5rem; }

.site-nav a {
  font-size: 0.9rem;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s;
}

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

/* Hero / intro */
.hero {
  margin-bottom: 3.5rem;
}

.hero h1 {
  font-size: 2.25rem;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}

.hero p {
  font-size: 1.1rem;
  color: var(--muted);
}

/* Post list */
.post-list { list-style: none; }

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

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

.post-date {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}

.post-title {
  font-size: 1.3rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

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

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

.post-excerpt {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

.read-more {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.85rem;
  color: var(--accent);
  text-decoration: none;
  font-family: var(--font-mono);
}

.read-more:hover { color: var(--accent-h); text-decoration: underline; }

/* Article */
article.post-content {
  padding-bottom: 4rem;
}

article.post-content h1 {
  font-size: 2.1rem;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
}

.post-meta {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

article.post-content h2 {
  font-size: 1.35rem;
  margin: 2.5rem 0 0.75rem;
  letter-spacing: -0.02em;
}

article.post-content p { margin-bottom: 1.5rem; }

article.post-content blockquote {
  border-left: 3px solid var(--border);
  padding-left: 1.25rem;
  margin: 2rem 0;
  color: var(--muted);
  font-style: italic;
}

article.post-content code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--surface);
  padding: 0.15em 0.35em;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

/* About page */
.about-section { padding-bottom: 4rem; }

.about-section h1 {
  font-size: 2.1rem;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.about-section p { margin-bottom: 1.5rem; color: var(--muted); }

/* Footer */
.site-footer {
  padding: 2.5rem 0 3rem;
  border-top: 1px solid var(--border);
  margin-top: 4rem;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* Back link */
.back-link {
  display: inline-block;
  margin-bottom: 2rem;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--muted);
  text-decoration: none;
}

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

/* Reading time */
.reading-time {
  font-style: italic;
}

/* Post navigation */
.post-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  font-family: var(--font-mono);
  gap: 1rem;
}
.post-nav a {
  color: var(--muted);
  text-decoration: none;
}
.post-nav a:hover { color: var(--accent); }
.post-nav-prev { text-align: left; }
.post-nav-next { text-align: right; margin-left: auto; }

/* Responsive */
@media (max-width: 480px) {
  html { font-size: 16px; }
  .site-header { flex-direction: column; }
  .hero h1 { font-size: 1.8rem; }
}

/* Subscribe CTA */
.subscribe-cta {
  text-align: center;
  padding: 2.5rem 1rem;
  margin: 3rem 0 1rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.subscribe-cta p {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: 1rem;
  font-style: italic;
}
.subscribe-form-row {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.subscribe-form-row input[type="email"] {
  padding: 0.6rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--fg);
  min-width: 220px;
}
.subscribe-cta .subscribe-btn {
  display: inline-block;
  padding: 0.6rem 1.8rem;
  background: var(--accent);
  color: var(--bg);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s;
}
.subscribe-cta .subscribe-btn:hover {
  opacity: 0.85;
}