/* Theme via CSS variables (light default, dark opt-in) */
:root {
  --bg-base: #f9fafb;
  --surface: #ffffff;
  --surface-2: #f3f4f6;
  --text: #111827;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --border-strong: #d1d5db;
  --accent: #7c3aed;
  --accent-hover: #6d28d9;
  --chip-bg: #f3f4f6;
  --chip-bg-active: #7c3aed;
  --chip-text: #374151;
  --chip-text-active: #ffffff;
}

html.dark {
  --bg-base: #0f172a;
  --surface: #1f2937;
  --surface-2: #111827;
  --text: #f3f4f6;
  --text-muted: #9ca3af;
  --border: #374151;
  --border-strong: #4b5563;
  --accent: #a78bfa;
  --accent-hover: #8b5cf6;
  --chip-bg: #374151;
  --chip-bg-active: #7c3aed;
  --chip-text: #d1d5db;
  --chip-text-active: #ffffff;
}

body {
  background: var(--bg-base);
  color: var(--text);
}

#app-header {
  background: rgba(255, 255, 255, 0.9);
  border-color: var(--border);
}
html.dark #app-header {
  background: rgba(15, 23, 42, 0.92);
}
#filter-bar {
  border-color: var(--border);
  background: var(--surface);
}
html.dark #filter-bar {
  background: rgba(31, 41, 55, 0.6);
}

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

/* Inputs */
.input {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 8px;
  font-size: 13px;
}
.input:focus { outline: none; border-color: var(--accent); }

/* Buttons */
.mode-btn {
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  transition: .12s;
}
.mode-btn:hover { background: var(--border); }
.mode-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-ghost {
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  background: var(--surface-2);
  color: var(--text-muted);
  border: 1px solid var(--border);
  cursor: pointer;
}
.btn-ghost:hover { color: var(--text); background: var(--border); }

.btn-danger-ghost {
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 11px;
  background: transparent;
  color: #dc2626;
  border: 1px solid #fca5a5;
  cursor: pointer;
}
html.dark .btn-danger-ghost { color: #f87171; border-color: #991b1b; }
.btn-danger-ghost:hover { background: #fee2e2; }
html.dark .btn-danger-ghost:hover { background: #450a0a; }

/* Filter bar */
.filter-group {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.f-label {
  color: var(--text-muted);
  font-weight: 500;
}
.chips {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.chip {
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 500;
  background: var(--chip-bg);
  color: var(--chip-text);
  border: 1px solid transparent;
  cursor: pointer;
  transition: .12s;
}
.chip:hover { filter: brightness(1.05); }
.chip.active {
  background: var(--chip-bg-active);
  color: var(--chip-text-active);
}
.f-all, .f-none {
  padding: 2px 6px;
  font-size: 10px;
  color: var(--text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  text-decoration: underline;
}
.f-all:hover, .f-none:hover { color: var(--text); }
.radio {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  color: var(--text);
}
.radio input { accent-color: var(--accent); }

/* Rating buttons */
.rate-btn {
  width: 28px; height: 28px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  background: var(--surface-2);
  color: var(--text-muted);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: .12s;
}
.rate-btn:hover { color: var(--text); }
.rate-btn.score-1 {
  background: #f59e0b;
  color: #fff;
  border-color: #d97706;
}
.rate-btn.score-2 {
  background: #16a34a;
  color: #fff;
  border-color: #15803d;
}

.rate-row {
  display: grid;
  grid-template-columns: 65px 1fr;
  align-items: center;
  gap: 6px;
  font-size: 11px;
}
.rate-row .label { color: var(--text-muted); }
.rate-row .btns { display: flex; gap: 4px; }

/* Image cards */
.img-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: border-color .15s;
}
.img-card:hover { border-color: var(--accent); }
.img-card img {
  width: 100%;
  height: auto;
  display: block;
  cursor: pointer;
  background: var(--surface-2);
}
.img-card .meta {
  padding: 6px 8px 4px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  border-bottom: 1px solid var(--border);
}

.badge { padding: 1px 6px; border-radius: 4px; font-weight: 600; font-size: 10px; }
.badge-version { background: var(--accent); color: #fff; }
.badge-step { background: #2563eb; color: #fff; }

.rater { padding: 6px 8px 8px; display: flex; flex-direction: column; gap: 3px; }

/* Pair card */
.pair-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
  margin-bottom: 12px;
}
.pair-header {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.pair-imgs {
  display: grid;
  grid-template-columns: repeat(var(--cols, 2), 1fr);
  gap: 8px;
}

/* Stats */
.stats-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.stats-table th, .stats-table td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  text-align: right;
}
.stats-table th:first-child, .stats-table td:first-child { text-align: left; }
.stats-table thead th {
  background: var(--surface-2);
  color: var(--accent);
  font-weight: 600;
}
.stats-table tbody tr:hover { background: var(--surface-2); }
.stats-table .total-row { font-weight: 700; background: var(--surface-2); }
.stats-table .winner-cell { color: #16a34a; font-weight: 700; }
html.dark .stats-table .winner-cell { color: #4ade80; }

kbd {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 4px;
  font-family: monospace;
  font-size: 10px;
}

#lb-side {
  background: var(--surface);
  color: var(--text);
}