:root {
  --bg: #fdfaf5;
  --panel: #ffffff;
  --panel-alt: #faf4ea;
  --border: #e7ddc9;
  --border-strong: #cfbf9a;
  --ink: #1f1b14;
  --ink-soft: #4a4435;
  --ink-mute: #7d745f;
  --accent: #b15a16;
  --accent-soft: #e8c79b;
  --hard: #2f8f4a;
  --hard-soft: #d6efdc;
  --pos: #1f6fb5;
  --pos-soft: #d4e6f5;
  --neg: #b53a2e;
  --neg-soft: #f3d8d3;
  --code-bg: #2b2520;
  --code-ink: #f3ebd7;
  --shadow: 0 1px 2px rgba(80, 60, 20, 0.07), 0 6px 18px rgba(80, 60, 20, 0.07);
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  font-size: 14px;
  line-height: 1.5;
}

/* ── Topbar ──────────────────────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.topbar h1 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.1px;
}
.topbar-sub {
  margin-left: 8px;
  font-size: 12px;
  font-weight: 400;
  color: var(--ink-mute);
}
.topbar-right { display: flex; gap: 14px; }
.topbar-link {
  font-size: 13px;
  color: var(--accent);
  text-decoration: none;
}
.topbar-link:hover { text-decoration: underline; }

/* ── Layout ──────────────────────────────────────────────────────── */
.layout {
  display: flex;
  height: calc(100vh - 44px);
}
.sidebar {
  width: 340px;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  background: var(--panel);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.sidebar-controls {
  padding: 12px 12px 8px;
  border-bottom: 1px solid var(--border);
  background: var(--panel-alt);
}
#searchBox {
  width: 100%;
  padding: 6px 9px;
  border: 1px solid var(--border-strong);
  border-radius: 5px;
  background: #fff;
  font-size: 13px;
}
#searchBox:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.filter-row {
  display: flex;
  gap: 6px;
  margin-top: 8px;
}
.filter-pill {
  flex: 1;
  padding: 4px 8px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: #fff;
  color: var(--ink-soft);
  font-size: 12px;
  cursor: pointer;
}
.filter-pill:hover { background: var(--accent-soft); }
.filter-pill.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  margin-top: 8px;
}
.nav-row button {
  flex-shrink: 0;
  padding: 4px 10px;
  border: 1px solid var(--border-strong);
  border-radius: 5px;
  background: #fff;
  color: var(--ink-soft);
  font-size: 12px;
  cursor: pointer;
}
.nav-row button:hover:not(:disabled) { background: var(--accent-soft); }
.nav-row button:disabled { opacity: 0.4; cursor: not-allowed; }
.counter {
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--ink-mute);
  white-space: nowrap;
}

.qid-list {
  list-style: none;
  padding: 0;
  margin: 0;
  overflow-y: auto;
  flex: 1;
}
.qid-list li {
  padding: 7px 12px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  font-size: 12.5px;
}
.qid-list li:hover { background: var(--panel-alt); }
.qid-list li.selected {
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  padding-left: 9px;
}
.qid-list .qid-id {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  color: var(--ink-mute);
  display: block;
}
.qid-list .qid-question {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: var(--ink);
}
.qid-list .qid-tag {
  display: inline-block;
  padding: 0px 5px;
  margin-right: 4px;
  border-radius: 3px;
  font-size: 10px;
  font-weight: 600;
  color: #fff;
  vertical-align: middle;
}
.qid-tag.WikiSQL { background: #4078b8; }
.qid-tag.WikiTQ { background: #8b6cb0; }

/* ── Main pane ───────────────────────────────────────────────────── */
.main-pane {
  flex: 1;
  overflow-y: auto;
  padding: 22px 28px;
  max-width: 1500px;
}

.placeholder {
  padding: 60px 20px;
  text-align: center;
  color: var(--ink-mute);
  font-size: 15px;
}

/* sticky header */
.record-header {
  position: sticky;
  top: -22px; /* cancel main-pane top padding so it pins flush */
  background: var(--bg);
  padding: 8px 0 10px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
  z-index: 4;
}
.record-pills {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.pill {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: 11.5px;
  border-radius: 999px;
  background: var(--panel-alt);
  color: var(--ink-soft);
  border: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
}
.pill.dataset { font-weight: 600; }
.pill.dataset.WikiSQL { background: #e1ecf7; color: #1f4f87; border-color: #b8d2ec; }
.pill.dataset.WikiTQ { background: #ebe1f5; color: #563a83; border-color: #cbb8e3; }
.pill.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.copy-btn {
  border: 1px solid var(--border);
  background: #fff;
  cursor: pointer;
  padding: 2px 8px;
  font-size: 11.5px;
  border-radius: 999px;
  color: var(--ink-mute);
}
.copy-btn:hover { background: var(--accent-soft); color: var(--ink); }
.copy-btn.copied { background: var(--hard-soft); color: var(--hard); border-color: var(--hard); }

.question-text {
  font-size: 17px;
  font-weight: 500;
  margin: 4px 0 10px;
  color: var(--ink);
}

/* gold-answer pills: single horizontal row, scroll if many */
.answer-row {
  display: flex;
  flex-wrap: nowrap;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 4px;
}
.answer-pill {
  flex: 0 0 auto;
  padding: 3px 10px;
  background: #fff7e6;
  border: 1px solid #e8c97b;
  color: #8a5d09;
  border-radius: 5px;
  font-size: 12.5px;
  font-weight: 500;
  white-space: nowrap;
}
.answer-label {
  flex: 0 0 auto;
  padding: 3px 0 3px 0;
  font-size: 11.5px;
  color: var(--ink-mute);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-right: 4px;
  font-weight: 600;
}

/* ── SQL block ───────────────────────────────────────────────────── */
.section { margin: 22px 0; }
.section-title {
  margin: 0 0 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.sql-block {
  background: var(--code-bg);
  color: var(--code-ink);
  padding: 12px 14px;
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, "Courier New", monospace;
  font-size: 13px;
  line-height: 1.55;
  white-space: pre-wrap;
  word-wrap: break-word;
  overflow-x: auto;
  box-shadow: var(--shadow);
}
.sql-kw { color: #f0a878; font-weight: 600; }
.sql-str { color: #b5d97a; }
.sql-num { color: #91c8e4; }
.sql-fn { color: #e0b3ff; }

/* ── Tables panel ────────────────────────────────────────────────── */
.tables-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
  border-bottom: 2px solid var(--border);
  padding-bottom: 0;
}
.tables-tab {
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-bottom: none;
  background: var(--panel-alt);
  color: var(--ink-soft);
  font-size: 13px;
  cursor: pointer;
  border-radius: 6px 6px 0 0;
  font-weight: 500;
  position: relative;
  top: 2px;
}
.tables-tab .count {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 7px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  background: #fff;
  color: var(--ink-mute);
  border: 1px solid var(--border);
}
.tables-tab:hover:not(:disabled):not(.active) { background: #fff; }
.tables-tab:disabled { opacity: 0.35; cursor: not-allowed; }
.tables-tab.active {
  background: #fff;
  color: var(--ink);
  border-bottom: 2px solid #fff;
}
.tables-tab[data-bucket="hard_positive"] .count { background: var(--hard-soft); color: var(--hard); border-color: var(--hard); }
.tables-tab[data-bucket="positive"]      .count { background: var(--pos-soft);  color: var(--pos);  border-color: var(--pos);  }
.tables-tab[data-bucket="negative"]      .count { background: var(--neg-soft);  color: var(--neg);  border-color: var(--neg);  }

.tables-tab.active[data-bucket="hard_positive"] { border-top: 3px solid var(--hard); }
.tables-tab.active[data-bucket="positive"]      { border-top: 3px solid var(--pos); }
.tables-tab.active[data-bucket="negative"]      { border-top: 3px solid var(--neg); }

.chunk-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.chunk-card.hard_positive { border-left: 4px solid var(--hard); }
.chunk-card.positive      { border-left: 4px solid var(--pos); }
.chunk-card.negative      { border-left: 4px solid var(--neg); }

.chunk-head {
  padding: 10px 14px;
  background: var(--panel-alt);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}
.chunk-bread {
  font-size: 13px;
  color: var(--ink);
  line-height: 1.4;
}
.chunk-bread .crumb-sep {
  color: var(--ink-mute);
  margin: 0 6px;
}
.chunk-bread .crumb-page { font-weight: 600; }
.chunk-bread .crumb-section { color: var(--ink-soft); }
.chunk-bread .crumb-caption {
  display: block;
  font-size: 11.5px;
  color: var(--ink-mute);
  font-style: italic;
  margin-top: 2px;
}
.chunk-meta {
  flex-shrink: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  color: var(--ink-mute);
  text-align: right;
}
.chunk-meta .chunk-id-label { display: block; }

.chunk-table-wrap {
  overflow-x: auto;
  max-height: 480px;
  overflow-y: auto;
}
.chunk-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
}
.chunk-table thead {
  position: sticky;
  top: 0;
  background: #fff;
  z-index: 1;
}
.chunk-table th {
  text-align: left;
  padding: 7px 10px;
  border-bottom: 2px solid var(--border-strong);
  background: var(--panel-alt);
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}
.chunk-table td {
  padding: 6px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  color: var(--ink-soft);
}
.chunk-table tbody tr:nth-child(even) { background: var(--panel-alt); }
.chunk-table tbody tr:hover { background: var(--accent-soft); }

.empty-bucket {
  padding: 40px 20px;
  text-align: center;
  color: var(--ink-mute);
  background: var(--panel);
  border: 1px dashed var(--border-strong);
  border-radius: 8px;
  font-size: 13px;
}

/* small-screen squish (rare on HF; mainly for sanity) */
@media (max-width: 900px) {
  .layout { flex-direction: column; height: auto; }
  .sidebar { width: 100%; max-height: 240px; border-right: none; border-bottom: 1px solid var(--border); }
  .main-pane { padding: 16px; }
}