/* =========================================================================
   awesome-hub-generator — Global Styles
   ========================================================================= */

:root {
  --color-bg: #ffffff;
  --color-surface: #f8fafc;
  --color-border: #e2e8f0;
  --color-text: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #94a3b8;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: #eff6ff;
  --color-accent: #7c3aed;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, Consolas, monospace;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-hover); text-decoration: underline; }

img { max-width: 100%; height: auto; display: block; }

/* ---- Layout ---- */

.site-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Topbar ---- */

.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 48px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  text-decoration: none;
}
.brand:hover { color: var(--color-text); text-decoration: none; }
.brand-mark { font-size: 24px; line-height: 1; }
.brand strong { display: block; font-size: 16px; }
.brand small { display: block; font-size: 12px; color: var(--color-text-muted); font-weight: 400; }

.nav { display: flex; gap: 8px; margin-left: auto; }
.nav a {
  padding: 6px 14px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: background 0.15s;
}
.nav a:hover { background: var(--color-surface); text-decoration: none; }
.nav a.active { background: var(--color-primary-light); color: var(--color-primary); }

.github-link {
  font-size: 13px;
  padding: 6px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text-secondary);
  transition: all 0.15s;
}
.github-link:hover { border-color: var(--color-primary); color: var(--color-primary); text-decoration: none; }

/* ---- Hero ---- */

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-bottom: 64px;
  align-items: center;
}

.hero-copy .eyebrow {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.hero-copy h1 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 16px;
}

.hero-copy p {
  color: var(--color-text-secondary);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 24px;
}

.hero-actions { display: flex; gap: 12px; }

.button {
  display: inline-flex;
  align-items: center;
  padding: 10px 24px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  transition: all 0.15s;
}
.button:hover { border-color: var(--color-primary); color: var(--color-primary); text-decoration: none; }
.button.primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.button.primary:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); }

.hero-panel {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--color-border);
}

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}
.stat-grid div {
  text-align: center;
}
.stat-grid strong {
  display: block;
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary);
}
.stat-grid span {
  font-size: 13px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero-panel > p {
  font-size: 13px;
  color: var(--color-text-muted);
  text-align: center;
}

/* ---- Section Headers ---- */

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 24px;
}
.section-head .eyebrow {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  margin-bottom: 4px;
}
.section-head h2 { font-size: 22px; font-weight: 700; }
.section-head a { font-size: 14px; font-weight: 500; }
.compact-head { margin-bottom: 16px; }

/* ---- Page Title ---- */

.page-title {
  margin-bottom: 32px;
}
.page-title .eyebrow {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  margin-bottom: 8px;
}
.page-title h1 { font-size: 28px; font-weight: 700; margin-bottom: 8px; }
.page-title p { color: var(--color-text-secondary); font-size: 15px; }

/* ---- Card Grid ---- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
  margin-bottom: 48px;
}

/* ---- Paper Card ---- */

.paper-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 0.2s, border-color 0.2s;
}
.paper-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.preview-wrap {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-surface);
}
.preview-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.paper-body { padding: 16px; }

.paper-meta {
  display: flex;
  gap: 8px;
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}
.paper-meta span:last-child {
  margin-left: auto;
  background: var(--color-primary-light);
  color: var(--color-primary);
  padding: 1px 8px;
  border-radius: 4px;
  font-weight: 500;
}

.paper-body h3 {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.paper-body h3 a { color: inherit; }
.paper-body h3 a:hover { color: var(--color-primary); text-decoration: none; }

.paper-tldr {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---- Score Badge ---- */

.score-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  font-family: var(--font-mono);
  line-height: 1.4;
}
.score-high {
  background: #dcfce7;
  color: #166534;
}
.score-medium {
  background: #fef9c3;
  color: #854d0e;
}
.score-low {
  background: #fee2e2;
  color: #991b1b;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 10px;
}
.tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}
.link-row a {
  font-size: 12px;
  font-weight: 500;
  padding: 2px 10px;
  border-radius: 4px;
  background: var(--color-primary-light);
  color: var(--color-primary);
}
.link-row a:hover { background: var(--color-primary); color: #fff; text-decoration: none; }

.source-row {
  display: flex;
  gap: 4px;
}
.source-row span {
  font-size: 11px;
  color: var(--color-text-muted);
}

.paper-list-actions {
  display: flex;
  justify-content: center;
  margin: -24px 0 48px;
}

.load-more-button {
  padding: 10px 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}

.load-more-button:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.empty-state {
  grid-column: 1 / -1;
  padding: 32px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text-muted);
  text-align: center;
  background: var(--color-surface);
}

/* ---- Resource Card ---- */

.resource-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: box-shadow 0.2s;
}
.resource-card:hover { box-shadow: var(--shadow-md); }

.resource-head { margin-bottom: 10px; }
.resource-head .eyebrow {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}
.resource-head h3 { font-size: 17px; font-weight: 600; }

.resource-card p { font-size: 14px; color: var(--color-text-secondary); margin-bottom: 12px; line-height: 1.6; }
.resource-card .compact { font-size: 13px; margin-bottom: 8px; color: var(--color-text-muted); }
.resource-card .compact strong { color: var(--color-text-secondary); }

.media-resource-card {
  padding: 0;
}

.featured-dataset-grid {
  margin-bottom: 48px;
}

/* ---- Stack List (sidebar style) ---- */

.stack-list { display: flex; flex-direction: column; gap: 12px; }
.stack-list .resource-card { padding: 16px; }
.stack-list .resource-card h3 { font-size: 15px; }

/* ---- Split Section ---- */

.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 48px;
}

/* ---- Filter Panel ---- */

.filter-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-end;
  margin-bottom: 24px;
  padding: 16px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.filter-panel label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.filter-panel input,
.filter-panel select {
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  min-width: 180px;
}
.filter-panel input:focus,
.filter-panel select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-box { flex: 1; min-width: 200px; }
.search-box input { width: 100%; }

.filter-panel button {
  padding: 8px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: all 0.15s;
}
.filter-panel button:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.result-count {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-left: auto;
  align-self: center;
}

/* ---- Footer ---- */

.footer {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
  color: var(--color-text-muted);
  font-size: 13px;
  line-height: 1.8;
}
.footer a { color: var(--color-text-secondary); }

/* ---- Utility ---- */

[hidden] { display: none !important; }

/* ---- Responsive ---- */

@media (max-width: 768px) {
  .hero { grid-template-columns: 1fr; gap: 32px; }
  .split-section { grid-template-columns: 1fr; gap: 32px; }
  .card-grid { grid-template-columns: 1fr; }
  .topbar { flex-wrap: wrap; gap: 12px; }
  .nav { margin-left: 0; order: 3; width: 100%; }
  .filter-panel { flex-direction: column; }
  .filter-panel input, .filter-panel select { min-width: 0; width: 100%; }
  .result-count { margin-left: 0; }
}