/* ==========================================================================
   AI Skills Radar - Developer-Centric Theme (Linear / GitHub / HN dark aesthetic)
   ========================================================================== */

:root {
  --bg-primary: #09090b;
  --bg-surface: #121215;
  --bg-surface-hover: #18181b;
  --bg-elevated: #1e1e24;
  --border-color: #27272a;
  --border-light: #3f3f46;

  --text-primary: #fafafa;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;

  --color-green: #4ade80;
  --color-green-bg: rgba(34, 197, 94, 0.12);
  --color-green-border: rgba(34, 197, 94, 0.25);

  --color-cyan: #38bdf8;
  --color-purple: #a78bfa;
  --color-orange: #fb923c;
  --color-pink: #f472b6;
  --color-emerald: #34d399;

  --color-gold: #facc15;
  --color-gold-bg: rgba(234, 179, 8, 0.15);
  --color-gold-border: rgba(234, 179, 8, 0.35);
  --color-star: #eab308;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Geist", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", "Geist Mono", SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-hover: #f1f5f9;
  --bg-elevated: #e2e8f0;
  --border-color: #e2e8f0;
  --border-light: #cbd5e1;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;

  --color-green: #15803d;
  --color-green-bg: rgba(22, 163, 74, 0.08);
  --color-green-border: rgba(22, 163, 74, 0.25);

  --color-cyan: #0284c7;
  --color-purple: #7c3aed;
  --color-orange: #ea580c;
  --color-pink: #db2777;
  --color-emerald: #059669;

  --color-gold: #92400e;
  --color-gold-bg: rgba(245, 158, 11, 0.14);
  --color-gold-border: rgba(180, 83, 9, 0.35);
  --color-star: #b45309;
}

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

html {
  font-size: 14px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  max-width: 100vw;
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, select {
  font-family: inherit;
  font-size: inherit;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ==========================================================================
   Layout Containers
   ========================================================================== */

.app-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 20px 48px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-main {
  flex: 1 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ==========================================================================
   Header & Branding
   ========================================================================== */

.site-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 20px;
  margin-bottom: 8px;
}

.header-main {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: 580px;
}

.logo-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--color-green);
  text-transform: uppercase;
}

.logo-pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--color-green);
  box-shadow: 0 0 8px var(--color-green);
  animation: pulse 2s infinite ease-in-out;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.site-title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.site-tagline {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.45;
}

.header-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

.meta-chips {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.meta-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
}

.meta-pill strong {
  color: var(--text-primary);
  font-weight: 600;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.snapshot-control {
  display: flex;
  align-items: center;
  gap: 6px;
}

.control-label {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.dropdown-select {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 5px 10px;
  font-size: 12px;
  outline: none;
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.dropdown-select:hover,
.dropdown-select:focus {
  border-color: var(--border-light);
}

.lang-switcher {
  display: inline-flex;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 2px;
}

.lang-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 4px 9px;
  font-size: 11px;
  font-family: var(--font-mono);
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.lang-btn:hover {
  color: var(--text-primary);
}

.lang-btn.active {
  background-color: var(--border-color);
  color: var(--text-primary);
}

.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: 6px;
  padding: 4px 9px;
  font-size: 11px;
  font-family: var(--font-mono);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}

.theme-toggle-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-light);
  background-color: var(--bg-surface-hover);
}

.main-hub-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: 20px;
  padding: 4px 10px;
  font-size: 11px;
  font-family: var(--font-mono);
  font-weight: 500;
  text-decoration: none;
  transition: all 0.15s ease;
}

.main-hub-btn:hover {
  color: var(--color-cyan);
  border-color: var(--color-cyan);
  background-color: var(--bg-surface-hover);
}

.main-hub-btn .external-icon {
  opacity: 0.6;
}

/* ==========================================================================
   Curator's Shelf (Recommended & In-Use)
   ========================================================================== */

.curator-shelf {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 16px 20px;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}

.curator-shelf::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-cyan), var(--color-purple));
  opacity: 0.8;
}

.shelf-header {
  margin-bottom: 14px;
}

.shelf-title-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 4px;
}

.shelf-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 2px 7px;
  border-radius: 4px;
  background-color: var(--color-gold-bg);
  color: var(--color-gold);
  border: 1px solid var(--color-gold-border);
  display: inline-flex;
  align-items: center;
}

.shelf-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.shelf-subtitle {
  font-size: 12px;
  color: var(--text-secondary);
}

.curator-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

@media (max-width: 800px) {
  .curator-cards {
    grid-template-columns: 1fr;
  }
}

.curator-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 8px;
  transition: all 0.15s ease;
}

.curator-card:hover {
  border-color: var(--border-light);
  background-color: var(--bg-surface-hover);
}

.curator-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.curator-card-name-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.curator-card-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
}

.curator-card-title:hover {
  color: var(--color-cyan);
}

.curator-card-repo {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

.curator-card-badges {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.badge-in-use {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  background-color: var(--color-gold-bg);
  color: var(--color-gold);
  border: 1px solid var(--color-gold-border);
}

.curator-card-desc {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.45;
}

.curator-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding-top: 6px;
  border-top: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 11px;
}

.curator-card-stats {
  display: flex;
  align-items: center;
  gap: 10px;
}

.pill-featured {
  border-color: var(--color-gold-border);
  color: var(--color-gold);
}

.pill-featured.active {
  background-color: var(--color-gold-bg);
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.badge-featured {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 3px;
  background-color: var(--color-gold-bg);
  color: var(--color-gold);
  border: 1px solid var(--color-gold-border);
  margin-left: 6px;
  vertical-align: middle;
}

/* ==========================================================================
   Toolbar: Search, Filters, Sorting
   ========================================================================== */

.toolbar {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}

.search-icon {
  position: absolute;
  left: 14px;
  color: var(--text-muted);
  pointer-events: none;
}

.search-box input[type="search"] {
  width: 100%;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  padding: 10px 38px 10px 40px;
  font-size: 13px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.search-box input[type="search"]::-webkit-search-cancel-button {
  display: none;
}

.search-box input[type="search"]::placeholder {
  color: var(--text-muted);
}

.search-box input[type="search"]:focus {
  border-color: var(--border-light);
  box-shadow: 0 0 0 1px var(--border-light);
}

.search-clear {
  position: absolute;
  right: 12px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 18px;
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
}

.search-clear:hover {
  color: var(--text-primary);
}

.category-pills {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.category-pill {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  color: var(--text-secondary);
  padding: 5px 13px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.category-pill:hover {
  color: var(--text-primary);
  border-color: var(--border-light);
  background-color: var(--bg-surface-hover);
}

.category-pill.active {
  background-color: var(--border-color);
  border-color: var(--border-light);
  color: var(--text-primary);
}

.toolbar-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 4px 2px;
}

.results-count {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.sort-control {
  display: flex;
  align-items: center;
  gap: 8px;
}

#sort-label {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ==========================================================================
   Badges & Indicators
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
}

/* Category Badges */
.badge-cat-mcp-server {
  background-color: rgba(56, 189, 248, 0.12);
  color: var(--color-cyan);
  border: 1px solid rgba(56, 189, 248, 0.25);
}

.badge-cat-agent-tool {
  background-color: rgba(167, 139, 250, 0.12);
  color: var(--color-purple);
  border: 1px solid rgba(167, 139, 250, 0.25);
}

.badge-cat-coding-assistant {
  background-color: rgba(251, 146, 60, 0.12);
  color: var(--color-orange);
  border: 1px solid rgba(251, 146, 60, 0.25);
}

.badge-cat-agent-plugin {
  background-color: rgba(244, 114, 182, 0.12);
  color: var(--color-pink);
  border: 1px solid rgba(244, 114, 182, 0.25);
}

.badge-cat-benchmark-eval {
  background-color: rgba(52, 211, 153, 0.12);
  color: var(--color-emerald);
  border: 1px solid rgba(52, 211, 153, 0.25);
}

/* Weekly Delta Badge */
.badge-delta {
  background-color: var(--color-green-bg);
  color: var(--color-green);
  border: 1px solid var(--color-green-border);
}

.badge-delta .delta-symbol {
  font-size: 10px;
  opacity: 0.85;
}

/* Tag Pills */
.tag-pill {
  display: inline-flex;
  padding: 2px 6px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
}

/* ==========================================================================
   Desktop High-Density Table
   ========================================================================== */

.skills-container {
  width: 100%;
}

.skills-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background-color: var(--bg-surface);
  overflow: hidden;
}

.skills-table th {
  background-color: var(--bg-surface-hover);
  color: var(--text-secondary);
  font-size: 11px;
  font-family: var(--font-mono);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
}

.skills-table th.th-delta,
.skills-table th.th-stars,
.skills-table th.th-issues {
  text-align: right;
}

.skills-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

.skills-table tbody tr:last-child td {
  border-bottom: none;
}

.skills-table tbody tr {
  transition: background-color 0.12s ease;
}

.skills-table tbody tr:hover {
  background-color: var(--bg-surface-hover);
}

.skill-primary-cell {
  display: flex;
  flex-direction: column;
  gap: 3px;
  max-width: 440px;
}

.skill-title-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.skill-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.skill-name:hover {
  color: #38bdf8;
}

.skill-repo {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

.skill-repo:hover {
  color: var(--text-secondary);
}

.skill-desc {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.4;
  margin-top: 2px;
}

.td-delta, .td-stars, .td-issues {
  text-align: right;
  font-family: var(--font-mono);
  white-space: nowrap;
}

.stars-val {
  font-size: 12px;
  color: var(--text-primary);
  font-weight: 500;
}

.stars-icon {
  color: var(--color-star);
  margin-right: 2px;
  font-size: 11px;
}

.issues-val {
  font-size: 12px;
  color: var(--text-secondary);
}

.tags-cell {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  max-width: 220px;
}

/* ==========================================================================
   Mobile Stacked Card View (Hidden on desktop)
   ========================================================================== */

.skills-cards {
  display: none;
}

/* ==========================================================================
   Empty State
   ========================================================================== */

.empty-state {
  text-align: center;
  padding: 64px 20px;
  background-color: var(--bg-surface);
  border: 1px dashed var(--border-color);
  border-radius: 8px;
  margin: 12px 0;
}

.empty-icon {
  color: var(--text-muted);
  margin-bottom: 12px;
}

.empty-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.empty-description {
  font-size: 13px;
  color: var(--text-muted);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  margin-top: 36px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}

.footer-text {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

.footer-sub {
  color: var(--text-muted);
  font-size: 11px;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-secondary);
  transition: color 0.15s ease;
}

.footer-link:hover {
  color: var(--text-primary);
}

/* ==========================================================================
   Mobile Responsiveness (<640px)
   Crucial: No horizontal scroll, table replaced with stacked card layout.
   ========================================================================== */

@media (max-width: 640px) {
  .app-container {
    padding: 16px 12px 32px;
  }

  .header-main {
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
  }

  .header-actions {
    align-items: flex-start;
    width: 100%;
  }

  .header-controls {
    width: 100%;
    justify-content: space-between;
  }

  .category-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
  }

  .category-pill {
    padding: 4px 10px;
    font-size: 11px;
  }

  .toolbar-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .sort-control {
    width: 100%;
    justify-content: space-between;
  }

  .sort-control .dropdown-select {
    flex: 1;
  }

  /* Replace table with stacked cards on mobile */
  .skills-table {
    display: none;
  }

  .skills-cards {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
  }

  .skill-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: border-color 0.15s ease, background-color 0.15s ease;
  }

  .skill-card:active {
    background-color: var(--bg-surface-hover);
  }

  .card-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 10px;
  }

  .card-title-group {
    display: flex;
    flex-direction: column;
    gap: 2px;
  }

  .card-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
  }

  .card-repo {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-muted);
  }

  .card-desc {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.45;
  }

  .card-stats {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    padding: 8px 10px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 11px;
  }

  .card-stat-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--text-secondary);
  }

  .card-stat-item strong {
    color: var(--text-primary);
  }

  .card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
  }

  .footer-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

/* ==========================================================================
   Google AdSense / Sponsored Unit (Tasteful & Minimalist)
   ========================================================================== */

.ad-section {
  margin-top: 32px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px 16px;
  overflow: hidden;
  transition: all 0.15s ease;
}

.ad-label-bar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin-bottom: 8px;
}

.ad-label {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  opacity: 0.8;
}

.ad-wrapper {
  min-height: 90px;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

.ad-wrapper ins.adsbygoogle {
  background: transparent !important;
}