:root {
  --bg: #0d0d14;
  --surface: #1a1a2e;
  --surface2: #16213e;
  --accent: #6366f1;
  --accent2: #8b5cf6;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --border: #2d2d4e;
  --radius: 12px;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
}

/* ── Navbar ─────────────────────────────────────────────────── */
.navbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}
.logo {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.nav-tagline { color: var(--text-muted); font-size: 0.88rem; }

/* ── Hero ───────────────────────────────────────────────────── */
.hero {
  text-align: center;
  padding: 4rem 2rem 3rem;
  background: linear-gradient(160deg, var(--surface) 0%, var(--bg) 60%);
  border-bottom: 1px solid var(--border);
}
.hero h1 {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
  background: linear-gradient(135deg, #e2e8f0 30%, #8b5cf6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p { color: var(--text-muted); font-size: 1.05rem; }

/* ── Grid ───────────────────────────────────────────────────── */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  max-width: 1200px;
  margin: 2.5rem auto;
  padding: 0 1.5rem;
}

/* ── Card ───────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.15);
}
.card-img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  display: block;
}
.card-content { padding: 1.25rem; }
.card-category {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.22rem 0.6rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.6rem;
}
.card-content h2 { font-size: 1.05rem; margin-bottom: 0.5rem; line-height: 1.4; }
.card-content h2 a { color: var(--text); text-decoration: none; }
.card-content h2 a:hover { color: var(--accent); }
.card-content p { color: var(--text-muted); font-size: 0.88rem; line-height: 1.55; }
.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.9rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-muted);
}
.score { color: var(--accent); font-weight: 700; }

/* ── Post page ──────────────────────────────────────────────── */
.post-page {
  max-width: 740px;
  margin: 2.5rem auto;
  padding: 0 1.5rem 5rem;
}
.post-cover {
  width: 100%;
  border-radius: var(--radius);
  margin-bottom: 1.75rem;
  box-shadow: 0 4px 24px rgba(0,0,0,0.4);
}
.post-meta {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.score-badge {
  background: var(--accent);
  color: #fff;
  padding: 0.28rem 0.8rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
}
.category-badge {
  background: var(--surface2);
  color: var(--text-muted);
  padding: 0.28rem 0.8rem;
  border-radius: 999px;
  font-size: 0.78rem;
}
.date { color: var(--text-muted); font-size: 0.82rem; }
.post-page h1 {
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}
.tags { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-bottom: 1.75rem; }
.tag {
  background: var(--surface2);
  color: var(--text-muted);
  padding: 0.22rem 0.65rem;
  border-radius: 4px;
  font-size: 0.78rem;
}
.post-body { color: var(--text); line-height: 1.85; font-size: 1.03rem; }
.post-body p { margin-bottom: 1.1rem; }
.source-link { margin-top: 2.5rem; }
.source-link a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
}
.source-link a:hover { text-decoration: underline; }
.post-channels {
  margin-top: 1.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.9rem;
}
.post-channels a { color: var(--accent); margin-left: 0.5rem; }

/* ── Misc ───────────────────────────────────────────────────── */
.empty {
  text-align: center;
  color: var(--text-muted);
  padding: 5rem 2rem;
  grid-column: 1 / -1;
  font-size: 1.1rem;
}

footer {
  text-align: center;
  padding: 2.5rem;
  color: var(--text-muted);
  font-size: 0.82rem;
  border-top: 1px solid var(--border);
  margin-top: 3rem;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 600px) {
  .navbar { padding: 0.85rem 1rem; }
  .hero { padding: 2.5rem 1rem 2rem; }
  .grid { grid-template-columns: 1fr; padding: 0 1rem; }
  .post-page { padding: 0 1rem 3rem; }
}