:root {
  --bg: #0b0f14;
  --bg-elevated: #11161d;
  --bg-card: #131922;
  --border: #212936;
  --border-soft: #1a212b;
  --text: #e7edf5;
  --text-dim: #97a3b4;
  --text-faint: #5b6878;
  --accent: #4fd1c5;
  --accent-soft: rgba(79, 209, 197, 0.14);
  --accent-strong: #6ee7db;
  --badge-yes: #34d399;
  --badge-no: #3a4453;
  --danger: #f87171;
  --rose-red: #e11d48;
  --radius: 10px;
  --mono: "SF Mono", "JetBrains Mono", "Fira Code", ui-monospace, Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* ---------- Topbar ---------- */
#topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 18px;
  height: 58px;
  flex: 0 0 auto;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  z-index: 20;
}

#sidebar-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  width: 36px;
  height: 36px;
  font-size: 16px;
  cursor: pointer;
}

#brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  letter-spacing: 0.2px;
  white-space: nowrap;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}
#brand:hover { opacity: 0.85; }
#brand-mark { height: 30px; width: auto; display: block; }
#brand-name { font-size: 15px; }

#search-wrap { flex: 1; max-width: 420px; }
#search {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 9px 12px;
  font-size: 13.5px;
  outline: none;
}
#search:focus { border-color: var(--accent); }
#search::placeholder { color: var(--text-faint); }

#stats {
  font-size: 12px;
  color: var(--text-faint);
  white-space: nowrap;
}

#guide-link, #download-repo {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-dim);
  text-decoration: none;
  white-space: nowrap;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 999px;
}
#guide-link:hover, #download-repo:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- Body layout ---------- */
#body {
  flex: 1 1 auto;
  display: flex;
  min-height: 0;
}

#sidebar {
  width: 320px;
  flex: 0 0 auto;
  background: var(--bg-elevated);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  padding: 10px 0 40px;
}

#sidebar-scrim { display: none; }

#content {
  flex: 1 1 auto;
  overflow-y: auto;
  position: relative;
}

/* ---------- Tree ---------- */
#tree-controls {
  padding: 4px 18px 10px;
  border-bottom: 1px solid var(--border-soft);
  margin-bottom: 4px;
}
#toggle-all-btn {
  background: none;
  border: none;
  color: var(--text-faint);
  font-size: 11.5px;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
}
#toggle-all-btn:hover { color: var(--accent); }

.section-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  padding: 16px 18px 6px;
  font-weight: 700;
}

.sub-title {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  background: none;
  border: none;
  font: inherit;
  font-size: 12.5px;
  color: var(--text-dim);
  padding: 8px 18px 4px 18px;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
}
.sub-title:hover { color: var(--text); }
.sub-title .chevron {
  display: inline-block;
  font-size: 9px;
  color: var(--text-faint);
  transition: transform 0.15s ease;
  flex: 0 0 auto;
}
.sub-title.collapsed .chevron { transform: rotate(-90deg); }

.sub-body.collapsed { display: none; }

.tpl-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  color: var(--text-dim);
  padding: 7px 18px 7px 22px;
  font-size: 13.5px;
  cursor: pointer;
  border-left: 2px solid transparent;
}
.tpl-item:hover { background: var(--bg-card); color: var(--text); }
.tpl-item.active {
  background: var(--accent-soft);
  color: var(--accent-strong);
  border-left-color: var(--accent);
  font-weight: 600;
}
.tpl-item .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--border-soft);
  flex: 0 0 auto;
}
.tpl-item.has-image .dot { background: var(--accent); }
.tpl-item .label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tpl-item .id { color: var(--text-faint); font-family: var(--mono); font-size: 11px; flex: 0 0 auto; }

.no-results {
  padding: 24px 18px;
  color: var(--text-faint);
  font-size: 13px;
}

/* ---------- Empty state ---------- */
#empty-state[hidden], #template-view[hidden] {
  display: none !important;
}

#empty-state {
  max-width: 620px;
  margin: 0 auto;
  padding: 56px 32px 80px;
  text-align: center;
  color: var(--text-dim);
}
#empty-mark { width: 64px; height: auto; opacity: 0.7; margin-bottom: 14px; }
#empty-state h1 { font-size: 20px; color: var(--text); margin: 0 0 6px; }
#empty-state > p { margin: 0 0 28px; font-size: 14px; line-height: 1.6; }

/* ---------- How to use ---------- */
#how-to {
  text-align: left;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin-bottom: 20px;
}
#how-to h2 {
  margin: 0 0 14px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  font-weight: 700;
}
#how-to ol {
  margin: 0;
  padding-left: 20px;
  color: var(--text-dim);
  font-size: 13.5px;
  line-height: 1.7;
}
#how-to li { margin-bottom: 8px; }
#how-to li:last-child { margin-bottom: 0; }
#how-to li::marker { color: var(--accent); font-weight: 700; }

/* ---------- Leaderboard ---------- */
#leaderboard {
  text-align: left;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
}
#leaderboard h2 {
  margin: 0 0 14px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  font-weight: 700;
}
#leaderboard-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.lb-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--border-soft);
  font-size: 14px;
}
.lb-row:last-child { border-bottom: none; }
.lb-rank {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-faint);
  width: 24px;
  flex: 0 0 auto;
}
.lb-row:first-child .lb-rank { color: var(--accent-strong); font-weight: 700; }
.lb-name {
  flex: 1;
  color: var(--text);
  font-weight: 600;
}
.lb-count {
  font-size: 12px;
  color: var(--text-dim);
  font-family: var(--mono);
  white-space: nowrap;
}
.lb-empty { padding: 10px 0; color: var(--text-faint); font-size: 13px; }

#leaderboard-lead {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin-top: 8px;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
  font-style: italic;
}
.lb-icon { font-size: 15px; font-style: normal; }
.lb-lead-name {
  color: var(--rose-red);
  font-weight: 600;
}
.lb-lead-count {
  color: var(--rose-red);
  font-size: 12px;
  font-family: var(--mono);
  opacity: 0.85;
}
.lb-lead-note {
  color: var(--text-faint);
  font-size: 12px;
  margin-left: auto;
}

/* ---------- Template view ---------- */
#template-view {
  max-width: 920px;
  margin: 0 auto;
  padding: 32px 32px 80px;
}

.tpl-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.tpl-titles h1 { margin: 0 0 4px; font-size: 26px; }
.tpl-titles code {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 2px 8px;
  border-radius: 6px;
}
.tpl-id-row { display: flex; align-items: center; gap: 10px; }
#copy-link-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: none;
  color: var(--text-faint);
  font-size: 11.5px;
  cursor: pointer;
  padding: 0;
}
#copy-link-btn:hover { color: var(--accent); }
#copy-link-btn.copied { color: var(--badge-yes); }

.tpl-badges { display: flex; gap: 8px; flex-wrap: wrap; }
.badge {
  font-size: 11.5px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--badge-no);
  color: var(--text-faint);
}
.badge.yes { background: rgba(52, 211, 153, 0.15); color: var(--badge-yes); }

.tpl-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-dim);
}
.tpl-meta .meta-item b { color: var(--text); font-weight: 600; }

.tpl-description {
  white-space: pre-line;
  color: var(--text-dim);
  font-size: 14.5px;
  line-height: 1.65;
  margin: 18px 0 24px;
  border-left: 2px solid var(--border);
  padding-left: 14px;
}

.tpl-image-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
  margin-bottom: 28px;
  text-align: center;
}
.tpl-image-wrap img {
  max-width: 100%;
  max-height: 480px;
  border-radius: 6px;
  cursor: zoom-in;
}

/* ---------- Code panel ---------- */
.code-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.code-tabs {
  display: flex;
  gap: 2px;
  padding: 8px 8px 0;
  background: var(--bg-elevated);
}
.code-tab {
  background: none;
  border: none;
  color: var(--text-faint);
  font-size: 12.5px;
  font-weight: 600;
  padding: 8px 14px;
  cursor: pointer;
  border-radius: 6px 6px 0 0;
}
.code-tab.active {
  background: var(--bg-card);
  color: var(--accent);
}

.code-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-faint);
}
.code-toolbar-left { display: flex; align-items: center; gap: 14px; min-width: 0; }
.code-toolbar-left #code-filename { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#code-github-link {
  color: var(--text-faint);
  text-decoration: none;
  white-space: nowrap;
}
#code-github-link:hover { color: var(--accent); }

#copy-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 5px 11px;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
}
#copy-btn:hover { border-color: var(--accent); color: var(--accent); }
#copy-btn.copied { border-color: var(--badge-yes); color: var(--badge-yes); }

.code-panel pre {
  margin: 0;
  max-height: 640px;
  overflow: auto;
  padding: 16px;
}
.code-panel code {
  font-family: var(--mono);
  font-size: 12.8px;
  line-height: 1.6;
}
.hljs { background: transparent !important; }

/* ---------- Lightbox ---------- */
#lightbox[hidden] {
  display: none !important;
}

#lightbox {
  position: fixed;
  inset: 0;
  background: rgba(5, 8, 11, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  cursor: zoom-out;
  padding: 30px;
}
#lightbox img {
  max-width: 100%;
  max-height: 100%;
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  #sidebar-toggle { display: block; }

  #sidebar {
    position: fixed;
    top: 58px;
    bottom: 0;
    left: 0;
    width: 300px;
    max-width: 84vw;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    z-index: 30;
  }
  #body.sidebar-open #sidebar { transform: translateX(0); }

  #sidebar-scrim {
    display: none;
    position: fixed;
    inset: 58px 0 0 0;
    background: rgba(0,0,0,0.5);
    z-index: 25;
  }
  #body.sidebar-open #sidebar-scrim { display: block; }

  #stats, #guide-link, #download-repo { display: none; }
  #template-view { padding: 22px 16px 60px; }
  .tpl-titles h1 { font-size: 21px; }
  .guide-content { padding: 22px 16px 60px; }
}

/* ---------- Install Guide page ---------- */
#back-to-explorer {
  font-size: 13px;
  color: var(--text-dim);
  text-decoration: none;
  white-space: nowrap;
}
#back-to-explorer:hover { color: var(--accent); }

.guide-content {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 32px 100px;
}

#guide h1 { font-size: 26px; margin: 0 0 14px; }
.guide-intro {
  color: var(--text-dim);
  font-size: 14.5px;
  line-height: 1.65;
  margin: 0 0 28px;
}

.guide-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 40px;
}
.guide-nav a {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dim);
  text-decoration: none;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 7px 14px;
  border-radius: 999px;
}
.guide-nav a:hover { color: var(--accent); border-color: var(--accent); }

.guide-os {
  border-top: 1px solid var(--border);
  padding-top: 32px;
  margin-top: 32px;
  scroll-margin-top: 20px;
}
.guide-os:first-of-type { border-top: none; margin-top: 0; }

.guide-os h2 { font-size: 20px; margin: 0 0 18px; }
.guide-os h3 { font-size: 14.5px; color: var(--accent-strong); margin: 22px 0 10px; }
.guide-os p { color: var(--text-dim); font-size: 14px; line-height: 1.65; margin: 0 0 12px; }
.guide-os ol {
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.75;
  padding-left: 20px;
  margin: 0 0 14px;
}
.guide-os li { margin-bottom: 6px; }
.guide-os code {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 1px 6px;
  border-radius: 4px;
}
.guide-link {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
}

.guide-note {
  font-size: 13px;
  color: var(--text-faint);
  border-left: 2px solid var(--border);
  padding-left: 12px;
}

.code-box {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 0 0 16px;
}
.code-box pre {
  margin: 0;
  padding: 14px 90px 14px 16px;
  overflow-x: auto;
}
.code-box code {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text);
  background: none;
  padding: 0;
  white-space: pre;
}
.code-box .cbtn {
  position: absolute;
  top: 10px;
  right: 10px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 5px 11px;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
}
.code-box .cbtn:hover { border-color: var(--accent); color: var(--accent); }
.code-box .cbtn.copied { border-color: var(--badge-yes); color: var(--badge-yes); }