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

:root {
  --bg: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f8f9fa;
  --text: #1a1a1a;
  --text-muted: #666666;
  --accent: #c8a55a;
  --accent-dim: rgba(200, 165, 90, 0.12);
  --border: #e5e5e5;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Newsreader', Georgia, serif;
  --max-width: 720px;
  --max-width-wide: 1080px;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; transition: opacity 0.2s; }
a:hover { opacity: 0.8; }

.container { max-width: var(--max-width-wide); margin: 0 auto; padding: 0 24px; }

/* === HEADER === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  letter-spacing: -0.02em;
}

.site-nav { display: flex; gap: 28px; }
.site-nav a {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.2s;
}
.site-nav a:hover { color: var(--text); opacity: 1; }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  margin: 4px 0;
  transition: 0.3s;
}

/* === HERO === */
.blog-hero {
  padding: 80px 0 48px;
  max-width: var(--max-width);
}

.blog-hero h1 {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.hero-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.hero-meta {
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 500;
}

.back-link {
  display: inline-block;
  margin-top: 16px;
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* === CATEGORY FILTER === */
.category-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 48px;
}

.cat-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 500;
  transition: all 0.2s;
}
.cat-pill:hover, .cat-pill.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
  opacity: 1;
}
.cat-count { opacity: 0.5; font-size: 0.75rem; }

/* === YEAR GROUPS === */
.year-group { margin-bottom: 56px; }
.year-heading {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

/* === POST GRID === */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.post-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.25s;
}
.post-card:hover {
  border-color: rgba(200, 165, 90, 0.3);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.post-card a {
  display: block;
  padding: 24px;
  color: var(--text);
}

.post-card time {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  font-weight: 500;
}

.post-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.post-excerpt {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 12px;
}

.post-cats { display: flex; flex-wrap: wrap; gap: 6px; }
.cat-tag {
  font-size: 0.7rem;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 500;
}

/* === CATEGORIES GRID === */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.category-card {
  display: block;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  transition: all 0.2s;
}
.category-card:hover {
  border-color: var(--accent);
  background: var(--bg-card-hover);
  opacity: 1;
}
.category-card h3 { font-size: 1rem; margin-bottom: 4px; }
.category-card .cat-count { color: var(--text-muted); font-size: 0.8rem; }

/* === SINGLE POST === */
.post-single { max-width: var(--max-width); padding-top: 60px; }

.post-header { margin-bottom: 48px; }

.post-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.meta-sep { opacity: 0.3; }

.post-category {
  color: var(--accent);
  font-weight: 500;
  font-size: 0.8rem;
  background: var(--accent-dim);
  padding: 2px 10px;
  border-radius: 4px;
}

.post-single h1 {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

/* === PROSE CONTENT === */
.prose {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.85;
  color: #333333;
}

.prose p { margin-bottom: 1.5em; }
.prose p.comments-header {
  margin-top: 2em;
  padding-top: 2em;
  border-top: 1px solid var(--border);
  font-weight: 600;
  color: var(--accent);
}
.prose h2 {
  font-family: var(--font-sans);
  font-size: 1.4rem;
  font-weight: 700;
  margin: 2.5em 0 0.8em;
  color: var(--text);
}
.prose h3 {
  font-family: var(--font-sans);
  font-size: 1.15rem;
  font-weight: 600;
  margin: 2em 0 0.6em;
  color: var(--text);
}
.prose blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 20px;
  margin: 1.5em 0;
  font-style: italic;
  color: var(--text-muted);
}
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.prose img { max-width: 100%; height: auto; border-radius: 8px; margin: 1.5em 0; }
.prose ul, .prose ol { padding-left: 1.5em; margin-bottom: 1.5em; }
.prose li { margin-bottom: 0.4em; }
.prose code {
  background: var(--bg-card);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

/* === POST NAV === */
.post-footer {
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.post-nav {
  display: flex;
  justify-content: space-between;
  gap: 24px;
}

.nav-prev, .nav-next {
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--text);
  max-width: 45%;
}
.nav-next { text-align: right; margin-left: auto; }
.nav-label { font-size: 0.8rem; color: var(--text-muted); }
.nav-title { font-size: 0.9rem; font-weight: 500; }

/* === PAGINATION === */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  padding: 48px 0;
  list-style: none;
}
.pagination li a, .pagination li span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.pagination li.active span {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}

/* === FOOTER === */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  margin-top: 80px;
}
.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.site-footer p { color: var(--text-muted); font-size: 0.8rem; }
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--text-muted); font-size: 0.8rem; }

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .blog-hero h1 { font-size: 2rem; }
  .post-single h1 { font-size: 1.8rem; }
  .posts-grid { grid-template-columns: 1fr; }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }

  .site-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
  }
  .site-nav.open { display: flex; }
  .nav-toggle { display: block; }
  .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
  .nav-toggle.active span:nth-child(2) { opacity: 0; }
  .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }

  .site-footer .container { flex-direction: column; gap: 12px; text-align: center; }
  .post-nav { flex-direction: column; }
  .nav-next { text-align: left; margin-left: 0; }
  .blog-hero { padding: 48px 0 32px; }
}