/* ═══════════════════════════════════════════════════════════════════
   SKILLS PLAYGROUND — THE LLM SKILLS DIRECTORY
   ═══════════════════════════════════════════════════════════════════ */

:root {
  --bg-base: #0a0a0c;
  --bg-elevated: #111113;
  --bg-surface: #18181b;
  --bg-hover: #1f1f23;
  --bg-active: #27272b;

  --border-subtle: #27272b;
  --border-default: #333338;
  --border-active: #48484f;

  --text-primary: #fafafa;
  --text-secondary: #a1a1aa;
  --text-muted: #52525b;

  --accent: #10b981;
  --accent-dim: rgba(16, 185, 129, 0.1);
  --accent-bright: #34d399;

  --orange: #f97316;
  --orange-dim: rgba(249, 115, 22, 0.1);

  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  --font-sans: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --container: 960px;
  --radius: 6px;
}

/* ─── Reset ─────────────────────────────────────────────── */

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

html {
  height: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 14px;
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100%;
}

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

a:hover {
  color: var(--accent-bright);
}

/* ─── Header ────────────────────────────────────────────── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 48px;
  padding: 0 24px;
  background: rgba(10, 10, 12, 0.85);
  border-bottom: 1px solid var(--border-subtle);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.brand-link {
  text-decoration: none;
}

.brand {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 14px;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.header-nav a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color 0.15s;
}

.header-nav a:hover {
  color: var(--text-primary);
}

.nav-icon {
  display: flex;
  align-items: center;
}

.nav-icon svg {
  opacity: 0.5;
  transition: opacity 0.15s;
}

.nav-icon:hover svg {
  opacity: 1;
}

/* ─── Hero ──────────────────────────────────────────────── */

.hero {
  max-width: var(--container);
  margin: 0 auto;
  padding: 64px 24px 40px;
  text-align: center;
}

.ascii-art {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.2;
  color: var(--accent);
  margin-bottom: 24px;
  user-select: none;
  overflow: hidden;
  white-space: pre;
}

.hero-tagline {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 28px;
}

.hero-command {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 13px;
}

.command-prompt {
  color: var(--accent);
  user-select: none;
}

.hero-command code {
  color: var(--text-primary);
}

.copy-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s;
}

.copy-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-dim);
}

/* ─── Agent Compatibility Bar ───────────────────────────── */

.agents-bar {
  max-width: var(--container);
  margin: 0 auto 48px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.agents-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.agents-logos {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.agent-badge {
  padding: 3px 10px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ─── Directory / Leaderboard ───────────────────────────── */

.directory {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px 48px;
}

.directory-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 16px;
}

.directory-tabs {
  display: flex;
  gap: 4px;
}

.dir-tab {
  padding: 6px 14px;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s;
}

.dir-tab:hover {
  color: var(--text-secondary);
  border-color: var(--border-default);
}

.dir-tab.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

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

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

/* Search */

.search-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  margin-bottom: 12px;
  transition: border-color 0.15s;
}

.search-bar:focus-within {
  border-color: var(--accent);
}

.search-icon {
  color: var(--text-muted);
  flex-shrink: 0;
}

.search-bar input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  outline: none;
}

.search-bar input::placeholder {
  color: var(--text-muted);
}

/* Category Filters */

.category-bar {
  display: flex;
  gap: 6px;
  margin-bottom: 16px;
  overflow-x: auto;
  padding-bottom: 4px;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.category-bar::-webkit-scrollbar {
  display: none;
}

.cat-chip {
  padding: 4px 12px;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s;
}

.cat-chip:hover {
  color: var(--text-secondary);
  border-color: var(--border-default);
}

.cat-chip.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

/* Table */

.leaderboard-wrap {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  overflow: hidden;
}

.leaderboard {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

.leaderboard thead {
  background: var(--bg-surface);
}

.leaderboard th {
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}

.leaderboard td {
  padding: 12px 16px;
  font-size: 13px;
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: middle;
}

.leaderboard tbody tr {
  transition: background 0.1s;
}

.leaderboard tbody tr:hover {
  background: var(--bg-hover);
}

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

/* Column widths */
.col-rank { width: 48px; text-align: center; }
.col-name { width: auto; }
.col-author { width: 180px; }
.col-category { width: 140px; }
.col-installs { width: 90px; text-align: right; }

.col-rank + .col-name { padding-left: 0; }

/* Rank number */
.rank-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  display: block;
}

/* Skill cell */
.skill-cell {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.skill-icon {
  font-size: 18px;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}

.skill-info {
  min-width: 0;
  flex: 1;
}

.skill-name {
  font-weight: 600;
  font-size: 13px;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
}

.skill-desc {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
  line-height: 1.4;
}

.skill-name a {
  color: inherit;
  text-decoration: none;
}

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

/* Author / source */
.source-cell {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.source-cell a {
  color: var(--text-muted);
}

.source-cell a:hover {
  color: var(--accent);
}

/* Category badge */
.cat-badge {
  display: inline-block;
  padding: 2px 8px;
  background: var(--bg-hover);
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-secondary);
  white-space: nowrap;
}

/* Install count */
.install-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  text-align: right;
  display: block;
}

/* Loading / empty states */
.loading-row td {
  text-align: center;
  padding: 48px 16px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 13px;
}

.no-results-row td {
  text-align: center;
  padding: 48px 16px;
  color: var(--text-muted);
  font-size: 13px;
}

/* ─── Browse Section ────────────────────────────────────── */

.browse-section {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px 64px;
}

.browse-section h2 {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.browse-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.browse-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  text-decoration: none;
  transition: all 0.15s;
}

.browse-card:hover {
  border-color: var(--accent);
  background: var(--bg-hover);
}

.browse-icon {
  font-size: 20px;
  margin-bottom: 4px;
}

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

.browse-desc {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ─── Footer ────────────────────────────────────────────── */

.site-footer {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px 32px;
  border-top: 1px solid var(--border-subtle);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-bottom: 40px;
}

.footer-col h3 {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 6px;
}

.footer-col a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color 0.15s;
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

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

/* ─── Scrollbar ─────────────────────────────────────────── */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-default);
}

/* ─── Responsive ────────────────────────────────────────── */

@media (max-width: 768px) {
  .hero {
    padding: 40px 16px 32px;
  }

  .ascii-art {
    font-size: 9px;
  }

  .hero-tagline {
    font-size: 14px;
  }

  .hero-command {
    font-size: 11px;
    padding: 8px 12px;
  }

  .agents-bar {
    margin-bottom: 32px;
  }

  .directory {
    padding: 0 16px 32px;
  }

  .directory-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .col-author,
  .col-category {
    display: none;
  }

  .col-name {
    width: auto;
  }

  .col-installs {
    width: 70px;
  }

  .leaderboard td,
  .leaderboard th {
    padding: 10px 12px;
  }

  .browse-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .site-header {
    padding: 0 16px;
  }

  .header-nav {
    gap: 12px;
  }

  .header-nav a:not(.nav-icon) {
    display: none;
  }
}

@media (max-width: 480px) {
  .ascii-art {
    font-size: 7px;
  }

  .browse-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .agents-logos {
    gap: 6px;
  }

  .agent-badge {
    font-size: 10px;
    padding: 2px 8px;
  }
}