:root {
  --font-ui: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --radius: 10px;
  --radius-sm: 6px;
  --transition: 0.22s ease;
  --shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f1216;
  --surface: #171c23;
  --surface-2: #1e242d;
  --surface-3: #262d38;
  --border: #2b333e;
  --border-strong: #3a4450;
  --text: #e8edf3;
  --muted: #93a0b0;
  --faint: #5d6875;

  --accent: #e8a944;
  --accent-strong: #f2bb5e;
  --accent-ink: #17110a;
  --accent-dim: rgba(232, 169, 68, 0.14);

  --seg-owner: #e8edf3;
  --seg-repo: #e8edf3;
  --seg-branch: #e8a944;
  --seg-path: #79b8ff;

  --cat-images: #79b8ff;
  --cat-fonts: #d2a8ff;
  --cat-code: #e8a944;
  --cat-docs: #7ee787;
  --cat-other: #93a0b0;

  --danger: #f47067;
  --danger-bg: rgba(244, 112, 103, 0.1);
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f3f4f6;
  --surface: #ffffff;
  --surface-2: #f6f7f9;
  --surface-3: #eceef1;
  --border: #d9dee4;
  --border-strong: #c2cad3;
  --text: #1b2129;
  --muted: #57626e;
  --faint: #8b95a1;

  --accent: #b07514;
  --accent-strong: #935f0c;
  --accent-ink: #ffffff;
  --accent-dim: rgba(176, 117, 20, 0.1);

  --seg-owner: #1b2129;
  --seg-repo: #1b2129;
  --seg-branch: #b07514;
  --seg-path: #0969da;

  --cat-images: #0969da;
  --cat-fonts: #8250df;
  --cat-code: #b07514;
  --cat-docs: #1a7f37;
  --cat-other: #57626e;

  --danger: #cf222e;
  --danger-bg: rgba(207, 34, 46, 0.08);
  --shadow: 0 8px 28px rgba(27, 33, 41, 0.1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.55;
  background: var(--bg);
  color: var(--text);
  transition: background-color var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
}

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

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

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

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px 64px;
}

.site-header {
  max-width: 1100px;
  margin: 0 auto;
  padding: 22px 20px 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand { display: flex; align-items: center; gap: 13px; min-width: 0; }

.brand-mark { width: 42px; height: 42px; flex: none; }
.mark-bg { fill: var(--surface-2); }
.mark-glyph { stroke: var(--accent); }

.brand-eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.brand-name {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.25;
}

.header-actions { display: flex; align-items: center; gap: 10px; flex: none; }

.help-pop { position: relative; }

.help-pop summary {
  list-style: none;
  width: 34px; height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--surface);
  color: var(--muted);
  font-family: var(--font-mono);
  font-weight: 700;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
  user-select: none;
}
.help-pop summary::-webkit-details-marker { display: none; }
.help-pop summary:hover { color: var(--text); border-color: var(--border-strong); }
.help-pop[open] summary { color: var(--accent); border-color: var(--accent); }

.help-body {
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  z-index: 30;
  width: min(320px, 82vw);
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  font-size: 13.5px;
  color: var(--muted);
}
.help-body p { margin: 0 0 8px; }
.help-body p:last-child { margin-bottom: 0; }
.help-body strong { color: var(--text); }

.theme-toggle {
  width: 34px; height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--surface);
  transition: border-color var(--transition), color var(--transition);
  color: var(--muted);
}
.theme-toggle:hover { color: var(--text); border-color: var(--border-strong); }
.theme-toggle svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.icon-moon { fill: currentColor; stroke: none; }

:root[data-theme="dark"] .icon-moon { display: none; }
:root[data-theme="light"] .icon-sun { display: none; }

.input-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: background-color var(--transition), border-color var(--transition);
}

.input-row { display: flex; gap: 10px; }

#repo-input {
  flex: 1;
  min-width: 0;
  padding: 13px 16px;
  font-family: var(--font-mono);
  font-size: 14.5px;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition);
}
#repo-input::placeholder { color: var(--faint); }
#repo-input:focus { outline: none; border-color: var(--accent); }
#repo-input[aria-invalid="true"] { border-color: var(--danger); }

.btn-primary {
  position: relative;
  padding: 0 22px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 650;
  font-size: 14.5px;
  white-space: nowrap;
  transition: background-color var(--transition), opacity var(--transition);
}
.btn-primary:hover:not(:disabled) { background: var(--accent-strong); }
.btn-primary:disabled { opacity: 0.75; cursor: progress; }

.btn-spinner {
  display: none;
  width: 15px; height: 15px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.btn-primary.is-loading .btn-label { visibility: hidden; }
.btn-primary.is-loading .btn-spinner {
  display: block;
  position: absolute;
  top: 50%; left: 50%;
  margin: -8px 0 0 -8px;
}

@keyframes spin { to { transform: rotate(360deg); } }

.anatomy {
  display: block;
  margin-top: 14px;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  background: var(--bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: thin;
}
.seg { transition: color var(--transition); }
.seg-host { color: var(--faint); }
.seg-owner { color: var(--faint); }
.seg-repo { color: var(--faint); }
.seg-branch { color: var(--faint); }
.seg-path { color: var(--faint); }
.anatomy.is-live .seg-owner { color: var(--seg-owner); font-weight: 600; }
.anatomy.is-live .seg-repo { color: var(--seg-repo); font-weight: 600; }
.anatomy.is-live .seg-branch { color: var(--seg-branch); }
.anatomy.is-live .seg-path { color: var(--seg-path); }

.input-error {
  margin: 12px 0 0;
  padding: 10px 14px;
  font-size: 13.5px;
  color: var(--danger);
  background: var(--danger-bg);
  border-radius: var(--radius-sm);
}

.skeleton { margin-top: 26px; }

.skel-bar {
  height: 46px;
  margin-bottom: 12px;
  border-radius: var(--radius-sm);
  background: linear-gradient(90deg, var(--surface) 25%, var(--surface-2) 45%, var(--surface) 65%);
  background-size: 300% 100%;
  animation: shimmer 1.3s ease-in-out infinite;
}
.skel-w40 { width: 40%; height: 30px; }
.skel-w70 { width: 70%; }

@keyframes shimmer {
  from { background-position: 100% 0; }
  to { background-position: -100% 0; }
}

#results { margin-top: 26px; }

.repo-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px 20px;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.repo-id { display: flex; align-items: baseline; gap: 12px; min-width: 0; flex-wrap: wrap; }

.repo-name {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}
.repo-name:hover { color: var(--accent); text-decoration: none; }

.repo-desc { font-size: 13px; color: var(--muted); }

.repo-controls { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

.branch-label { font-size: 12.5px; color: var(--muted); }

#branch-select {
  max-width: 210px;
  padding: 7px 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
#branch-select:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.control-sep { width: 1px; height: 22px; background: var(--border); }

.export-group { display: flex; align-items: center; gap: 6px; }
.export-label { font-size: 12.5px; color: var(--muted); margin-right: 2px; }

.btn-ghost {
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: color var(--transition), border-color var(--transition), background-color var(--transition);
}
.btn-ghost:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-dim);
}

.truncated-note {
  margin: 12px 0 0;
  padding: 10px 14px;
  font-size: 13px;
  color: var(--accent);
  background: var(--accent-dim);
  border-radius: var(--radius-sm);
}

.toolbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 16px 0 18px;
  padding: 10px 0;
  background: var(--bg);
  transition: background-color var(--transition);
}

.search-wrap { position: relative; flex: 1; max-width: 420px; }

.search-icon {
  position: absolute;
  left: 12px; top: 50%;
  transform: translateY(-50%);
  width: 16px; height: 16px;
  stroke: var(--faint);
  pointer-events: none;
}

#search-input {
  width: 100%;
  padding: 10px 14px 10px 38px;
  font-family: var(--font-ui);
  font-size: 14px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition);
}
#search-input:focus { outline: none; border-color: var(--accent); }
#search-input::placeholder { color: var(--faint); }

.result-count {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--muted);
  white-space: nowrap;
}

.category {
  margin-bottom: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.cat-head { display: flex; align-items: center; }

.cat-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 0;
  padding: 13px 18px;
  background: none;
  border: none;
  text-align: left;
  font-size: 14px;
  font-weight: 650;
  color: var(--text);
  transition: background-color var(--transition);
}
.cat-toggle:hover { background: var(--surface-2); }

.cat-copy { flex: none; margin: 0 16px 0 8px; }

.cat-dot { width: 9px; height: 9px; border-radius: 50%; flex: none; }
.cat-images .cat-dot { background: var(--cat-images); }
.cat-fonts  .cat-dot { background: var(--cat-fonts); }
.cat-code   .cat-dot { background: var(--cat-code); }
.cat-docs   .cat-dot { background: var(--cat-docs); }
.cat-other  .cat-dot { background: var(--cat-other); }

.cat-count {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  color: var(--muted);
  background: var(--surface-3);
  padding: 2px 9px;
  border-radius: 99px;
}

.cat-chevron {
  margin-left: auto;
  width: 16px; height: 16px;
  stroke: var(--muted);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform var(--transition);
}
.cat-toggle[aria-expanded="false"] .cat-chevron { transform: rotate(-90deg); }

.cat-body { border-top: 1px solid var(--border); overflow-x: auto; }

.file-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  min-width: 660px;
}

.file-table th {
  padding: 9px 18px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.file-table td {
  padding: 9px 18px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.file-table tr:last-child td { border-bottom: none; }
.file-table tbody tr { transition: background-color 0.15s ease; }
.file-table tbody tr:hover { background: var(--surface-2); }

.cell-name { max-width: 320px; }
.name-wrap { display: flex; align-items: center; gap: 10px; min-width: 0; }

.thumb {
  width: 34px; height: 34px;
  flex: none;
  object-fit: contain;
  border-radius: 4px;
  background:
    conic-gradient(var(--surface-3) 90deg, transparent 90deg 180deg, var(--surface-3) 180deg 270deg, transparent 270deg)
    0 0 / 12px 12px,
    var(--surface-2);
  border: 1px solid var(--border);
}

.file-name { font-weight: 550; overflow-wrap: anywhere; }
.file-path {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--faint);
  overflow-wrap: anywhere;
}

.ext-badge {
  display: inline-block;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  background: var(--surface-3);
  border-radius: 4px;
  text-transform: lowercase;
}

.cell-link { max-width: 340px; }
.cdn-link {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--seg-path);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cell-actions { white-space: nowrap; text-align: right; }

.copy-btn {
  padding: 4px 9px;
  margin-left: 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 5px;
  transition: color var(--transition), border-color var(--transition), background-color var(--transition);
}
.copy-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-dim);
}

.show-more {
  display: block;
  width: 100%;
  padding: 11px;
  background: var(--surface-2);
  border: none;
  border-top: 1px solid var(--border);
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  transition: color var(--transition), background-color var(--transition);
}
.show-more:hover { color: var(--accent); background: var(--surface-3); }

.empty-msg {
  padding: 40px 20px;
  text-align: center;
  color: var(--muted);
}

.toast {
  position: fixed;
  bottom: 26px;
  left: 50%;
  transform: translate(-50%, 16px);
  z-index: 100;
  padding: 11px 20px;
  font-size: 13.5px;
  font-weight: 550;
  color: var(--text);
  background: var(--surface-3);
  border: 1px solid var(--border-strong);
  border-radius: 99px;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
}
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }
.toast .tick { color: var(--cat-docs); margin-right: 6px; }

.site-footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: 30px 20px 44px;
  border-top: 1px solid var(--border);
  font-size: 12.5px;
  color: var(--faint);
  text-align: center;
}

.footer-love {
  margin: 0 0 14px;
  font-size: 14px;
  color: var(--muted);
}
.footer-love a {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text);
}
.footer-love a:hover { color: var(--accent); text-decoration: none; }

.heart {
  display: inline-block;
  color: var(--danger);
  animation: heartbeat 2.4s ease-in-out infinite;
}

@keyframes heartbeat {
  0%, 28%, 70%, 100% { transform: scale(1); }
  14%, 42% { transform: scale(1.25); }
}

.gh-star {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 99px;
  transition: color var(--transition), border-color var(--transition), background-color var(--transition);
}
.gh-star:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-dim);
  text-decoration: none;
}
.gh-star svg { width: 17px; height: 17px; fill: currentColor; }

.footer-note { margin: 16px 0 0; }
.footer-note a { color: inherit; text-decoration: underline; }
.footer-note a:hover { color: var(--muted); }

@media (max-width: 720px) {
  .brand-name { font-size: 16px; }
  .input-row { flex-direction: column; }
  .btn-primary { padding: 13px 22px; }
  .repo-meta { flex-direction: column; align-items: flex-start; }
  .toolbar { flex-wrap: wrap; }
  .search-wrap { max-width: none; flex-basis: 100%; }
  .cell-link { display: none; }
  .file-table { min-width: 0; }
  .file-table th:nth-child(3) { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}