/* carWeights v2 — dark UI matching the Android Compose theme */
:root {
  --bg: #0f1117;
  --panel: #171a23;
  --panel2: #1e222d;
  --line: #2a2f3a;
  --text: #e6e9ef;
  --muted: #9aa3b2;
  --accent: #4c8dff;
  --green: #1a7f37;
  --red: #cf222e;
  --amber: #bf8700;
  --grey: #6e7781;
  --pad: 16px;
  --gap: 14px;
  --radius: 12px;
  --font-scale: 1.15;
}

* { box-sizing: border-box; }

html { font-size: calc(15px * var(--font-scale)); }

body {
  margin: 0;
  font: 1rem/1.45 system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* Topbar */
.topbar {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 12px 18px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 20;
}
.title h1 { font-size: 1.15rem; margin: 0; font-weight: 700; }
.title .subtitle { display: block; color: var(--muted); font-size: 0.78rem; margin-top: 2px; }
.topbar-right { display: flex; align-items: center; gap: 12px; }

/* Tabs (bottom-bar style; we use a top bar that scrolls with content) */
.tabs {
  display: flex;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  padding: 6px 12px;
  gap: 4px;
  position: sticky; top: 56px; z-index: 19;
}
.tab {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: 8px;
  background: transparent; color: var(--muted); border: 1px solid transparent;
  padding: 9px 12px; border-radius: 10px; cursor: pointer;
  font-size: 0.95rem; font-weight: 600;
}
.tab[aria-selected="true"] {
  background: var(--panel2); color: var(--text); border-color: var(--accent);
}
.tab:hover { color: var(--text); }

/* Main content */
main { padding: var(--pad); max-width: 960px; margin: 0 auto; }

.tabpanel { display: none; }
.tabpanel.active { display: flex; flex-direction: column; gap: var(--gap); }

/* Cards */
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
}
.card h3 { margin: 0 0 4px; font-size: 1rem; font-weight: 700; }
.card-header { font-weight: 700; font-size: 0.95rem; margin-bottom: 8px; }
.note { background: var(--panel2); }

.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.hidden { display: none !important; }

/* Filter chips */
.filter-row { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin: 8px 0; }
.filter-label { color: var(--muted); font-size: 0.85rem; width: 90px; flex: 0 0 auto; }
.chip-row { display: flex; flex-wrap: wrap; gap: 6px; flex: 1; }
.chip {
  padding: 5px 11px; border-radius: 999px;
  background: var(--panel2); color: var(--text);
  border: 1px solid var(--line);
  font-size: 0.82rem; cursor: pointer;
}
.chip.on { background: var(--accent); color: var(--text); border-color: var(--accent); font-weight: 700; }
.chip:hover { border-color: var(--accent); }

/* Threshold card */
.threshold-card { padding: 14px; }
.threshold-header { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.threshold-icon { font-size: 1.4rem; }
.threshold-icon.bev { color: var(--green); }
.threshold-icon.ice { color: var(--red); }
.threshold-title { font-weight: 700; font-size: 0.95rem; flex: 1; }
.threshold-value { font-weight: 800; font-size: 1.25rem; }
.threshold-card[data-powertrain="BEV"] .threshold-value { color: var(--green); }
.threshold-card[data-powertrain="ICE"] .threshold-value { color: var(--red); }

.slider {
  width: 100%; -webkit-appearance: none; appearance: none;
  background: transparent; margin: 8px 0;
}
.slider::-webkit-slider-runnable-track {
  height: 4px; background: var(--line); border-radius: 2px;
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--accent); border: 2px solid var(--text);
  margin-top: -7px; cursor: pointer;
}
.slider::-moz-range-track { height: 4px; background: var(--line); border-radius: 2px; }
.slider::-moz-range-thumb {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--accent); border: 2px solid var(--text);
  cursor: pointer;
}
.range-axis { display: flex; justify-content: space-between; color: var(--muted); font-size: 0.7rem; }

/* Distribution bar */
.bar { display: flex; height: 20px; border-radius: 10px; overflow: hidden; background: var(--panel2); }
.bar > div { transition: width 0.2s; }
.bar .ok { background: var(--green); }
.bar .double { background: var(--red); }
.bar .borderline { background: var(--amber); }
.bar .unknown { background: var(--grey); }

.legend { display: flex; justify-content: space-between; margin-top: 10px; flex-wrap: wrap; gap: 8px; }
.legend-item { font-size: 0.82rem; }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 6px; vertical-align: middle; }
.dot.ok { background: var(--green); }
.dot.double { background: var(--red); }
.dot.borderline { background: var(--amber); }
.dot.unknown { background: var(--grey); }

/* Border cases */
.buckets { display: flex; justify-content: space-between; margin: 6px 0 10px; }
.bucket { text-align: center; flex: 1; }
.bucket-label { font-size: 0.78rem; font-weight: 700; }
.bucket-label.red { color: var(--red); }
.bucket-label.amber { color: var(--amber); }
.bucket-label.muted { color: var(--muted); }
.bucket-value { font-size: 1.4rem; font-weight: 800; margin-top: 2px; }
.borders { display: flex; flex-direction: column; gap: 4px; margin-top: 4px; }
.border-row {
  display: flex; align-items: center; gap: 8px;
  background: var(--panel2); border-radius: 8px; padding: 8px 10px;
  cursor: pointer; transition: background 0.1s;
}
.border-row:hover { background: var(--line); }
.border-row .make-model { flex: 1; min-width: 0; }
.border-row .make-model .name { font-size: 0.9rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.border-row .make-model .meta { color: var(--muted); font-size: 0.78rem; }
.border-row .delta { color: var(--red); font-weight: 700; font-size: 0.85rem; white-space: nowrap; }

/* Buttons */
.btn {
  padding: 7px 12px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--accent); color: var(--text);
  font-size: 0.85rem; font-weight: 600; cursor: pointer;
  text-decoration: none; display: inline-flex; align-items: center; gap: 6px;
}
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn-ghost:hover, .btn:hover { filter: brightness(1.15); }
.btn.small { padding: 5px 9px; font-size: 0.8rem; }

.actions { display: flex; justify-content: flex-end; }

/* Lookup */
.seg-row { display: flex; gap: 6px; }
.seg {
  flex: 1; padding: 8px 12px;
  background: var(--panel2); color: var(--muted);
  border: 1px solid var(--line); border-radius: 8px;
  font-size: 0.9rem; font-weight: 700; cursor: pointer;
}
.seg.active { background: var(--accent); color: var(--text); border-color: var(--accent); }

input[type="number"], input[type="search"] {
  width: 100%; padding: 9px 11px; background: var(--panel2);
  border: 1px solid var(--line); border-radius: 8px; color: var(--text);
  font-size: 0.9rem;
}

.verdict { display: flex; align-items: center; gap: 14px; }
.verdict-pill {
  display: inline-block; padding: 6px 14px; border-radius: 12px;
  font-weight: 800; font-size: 1.4rem;
}
.verdict-pill.ok { background: var(--green); color: #fff; }
.verdict-pill.double { background: var(--red); color: #fff; }
.verdict-pill.borderline { background: var(--amber); color: #000; }
.verdict-pill.unknown { background: var(--grey); color: #fff; }
.rule { margin-top: 8px; font-size: 0.9rem; color: var(--text); }

/* Browse */
.row-between { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin: 8px 0; }
.row-end { display: flex; justify-content: flex-end; gap: 8px; margin-top: 8px; }
.inline-switch { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; }
.inline-switch input { width: auto; }

.list { display: flex; flex-direction: column; gap: 6px; max-height: 60vh; overflow-y: auto; }
.row {
  display: flex; align-items: center; gap: 8px;
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 8px; padding: 10px 12px; cursor: pointer;
  transition: background 0.1s;
}
.row:hover { background: var(--panel2); }
.row .main { flex: 1; min-width: 0; }
.row .main .title { font-weight: 700; font-size: 0.9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row .main .meta { color: var(--muted); font-size: 0.78rem; }
.row .w { font-size: 0.85rem; font-weight: 600; }
.pill {
  display: inline-block; padding: 2px 8px; border-radius: 10px;
  font-size: 0.7rem; font-weight: 800;
}
.pill.ok { background: var(--green); color: #fff; }
.pill.double { background: var(--red); color: #fff; }
.pill.borderline { background: var(--amber); color: #000; }
.pill.unknown { background: var(--grey); color: #fff; }

/* Detail drawer */
.drawer {
  position: fixed; inset: 0; background: rgba(0,0,0,0.55);
  display: flex; justify-content: flex-end; z-index: 50;
}
.drawer-inner {
  width: min(440px, 95vw); height: 100%;
  background: var(--panel); border-left: 1px solid var(--line);
  padding: 18px; overflow-y: auto;
}
.close { float: right; }
.detail-h { font-size: 1.2rem; margin: 8px 0 4px; }
.detail-row { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px solid var(--line); }
.detail-row .k { color: var(--muted); font-size: 0.85rem; }
.detail-row .v { font-size: 0.9rem; font-weight: 600; }
.detail-verdict {
  display: inline-block; padding: 4px 12px; border-radius: 10px;
  font-weight: 800; font-size: 0.95rem; margin: 6px 0;
}
.detail-rule { margin-top: 12px; padding: 10px; background: var(--panel2); border-radius: 8px; font-size: 0.85rem; color: var(--muted); }

/* Make picker sheet */
.sheet {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5);
  display: flex; align-items: flex-end; justify-content: center; z-index: 40;
}
.sheet-inner {
  width: 100%; max-width: 720px; max-height: 85vh;
  background: var(--panel); border-top: 1px solid var(--line);
  border-radius: 14px 14px 0 0; padding: 16px;
  display: flex; flex-direction: column;
}
.sheet-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.sheet-header h3 { margin: 0; }
.sheet-list { overflow-y: auto; max-height: 45vh; margin-top: 8px; }
.sheet-row { display: flex; align-items: center; gap: 8px; padding: 5px 0; }
.sheet-row label { cursor: pointer; flex: 1; }

/* Responsive: mobile */
@media (max-width: 700px) {
  .topbar { flex-direction: column; align-items: flex-start; gap: 8px; }
  .tab span.tab-label { display: none; }
}