:root {
  color-scheme: dark;
  --bg: #14161a;
  --panel: #1b1e24;
  --panel-2: #22262e;
  --border: #2e333c;
  --text: #e8e9ec;
  --muted: #9aa1ab;
  --accent: #4fb3ff;
  --accent-2: #2f8fdb;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 13px;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.brand { font-weight: 600; font-size: 15px; margin-right: 8px; }
.spacer { flex: 1; }
.muted { color: var(--muted); }

.btn {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn:hover { background: #2a2f38; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn.primary { background: var(--accent-2); border-color: var(--accent-2); }
.btn.primary:hover { background: var(--accent); }

.preset-bar { display: flex; gap: 6px; align-items: center; }
select, input[type="text"], input[type="number"], input[type="color"] {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 5px 8px;
  font-size: 12px;
}

.progress-wrap {
  padding: 6px 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}
.progress-track { flex: 1; height: 6px; background: var(--panel-2); border-radius: 3px; overflow: hidden; }
.progress-bar { height: 100%; width: 0; background: var(--accent); transition: width 0.15s; }
.progress-label { min-width: 220px; color: var(--muted); }

.layout {
  display: grid;
  grid-template-columns: 220px 1fr 340px;
  height: calc(100vh - 52px);
}

.gallery-panel {
  background: var(--panel);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  padding: 10px;
}
.gallery { display: flex; flex-direction: column; gap: 8px; }
.thumb {
  position: relative;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px;
  cursor: pointer;
}
.thumb.selected { border-color: var(--accent); }
.thumb img { width: 100%; height: 90px; object-fit: cover; border-radius: 4px; display: block; }
.thumb-name {
  font-size: 11px;
  color: var(--muted);
  margin-top: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.thumb-remove {
  position: absolute;
  top: 4px; right: 4px;
  background: rgba(0,0,0,0.6);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 20px; height: 20px;
  cursor: pointer;
  line-height: 1;
}
.thumb-check {
  position: absolute;
  top: 4px; left: 4px;
  background: rgba(0,0,0,0.5);
  border-radius: 4px;
  padding: 2px;
  line-height: 0;
}
.gallery-toolbar { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 8px; }
.btn.small { padding: 4px 8px; font-size: 11px; }

.preview-panel { display: flex; flex-direction: column; overflow: hidden; }
.preview-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}
.canvas-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
  background: repeating-conic-gradient(#20242b 0% 25%, #191c22 0% 50%) 50% / 24px 24px;
  position: relative;
}
#previewCanvas { max-width: 100%; max-height: 100%; box-shadow: 0 4px 20px rgba(0,0,0,0.5); }
.empty-state { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: var(--muted); text-align: center; padding: 20px; }

.histogram-wrap { padding: 8px 14px; border-top: 1px solid var(--border); background: var(--panel); }
#histogramCanvas { width: 100%; height: 70px; display: block; background: var(--panel-2); border-radius: 4px; }

.switch { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; user-select: none; }

.controls-panel {
  background: var(--panel);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  padding: 6px 10px;
}

.group { border-bottom: 1px solid var(--border); padding: 4px 0; }
.group summary {
  cursor: pointer;
  padding: 8px 4px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
}
.group summary::-webkit-details-marker { display: none; }
.group summary::before { content: '▸'; margin-right: 6px; color: var(--muted); }
.group[open] summary::before { content: '▾'; }

.reset-btn {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 14px;
  padding: 2px 6px;
}
.reset-btn:hover { color: var(--text); }

.group-body { padding: 6px 4px 14px; display: flex; flex-direction: column; gap: 8px; }

.subhead { margin: 6px 0 0; font-size: 11px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }

.slider-row {
  display: grid;
  grid-template-columns: 110px 1fr 36px;
  align-items: center;
  gap: 8px;
}
.slider-row label { color: var(--muted); }
.slider-row .value-label { text-align: right; font-variant-numeric: tabular-nums; color: var(--muted); }

[data-crop-aspect].active { background: var(--accent-2); border-color: var(--accent-2); }

input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 4px;
  background: var(--panel-2);
  border-radius: 2px;
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 13px; height: 13px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid #0d1013;
}

.hsl-table { gap: 4px; }
.hsl-header, .hsl-row {
  display: grid;
  grid-template-columns: 70px 1fr 1fr 1fr;
  gap: 6px;
  align-items: center;
}
.hsl-header { font-size: 10px; color: var(--muted); text-transform: uppercase; }
.hsl-row label { font-size: 11px; color: var(--muted); }

.curve-canvas { background: var(--panel-2); border: 1px solid var(--border); border-radius: 6px; cursor: crosshair; width: 100%; height: auto; }
.hint { font-size: 11px; color: var(--muted); margin: 4px 0 0; }

.curve-tabs { display: flex; gap: 4px; margin-bottom: 6px; }
.curve-tab {
  flex: 1;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 4px 0;
  border-radius: 5px;
  cursor: pointer;
  font-size: 11px;
}
.curve-tab.active { background: var(--accent-2); border-color: var(--accent-2); color: var(--text); }

.local-adj-list { display: flex; flex-direction: column; gap: 4px; margin: 8px 0; }
.local-adj-row {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 8px;
  cursor: pointer;
  font-size: 11px;
}
.local-adj-row.active { border-color: var(--accent); }
.local-adj-row .la-name { flex: 1; }
.local-adj-row .la-remove { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 13px; }
.local-adj-row .la-remove:hover { color: var(--text); }
.local-adj-editor { border-top: 1px dashed var(--border); padding-top: 8px; margin-top: 4px; display: flex; flex-direction: column; gap: 8px; }

.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.55);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
}
.modal {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 20px;
  width: 380px;
  max-width: 90vw;
  max-height: 80vh;
  overflow-y: auto;
}
.modal h3 { margin: 0 0 6px; font-size: 15px; }
.sync-group-list { display: flex; flex-direction: column; gap: 6px; margin: 12px 0; }
.sync-group-list label { display: flex; align-items: center; gap: 8px; font-size: 12px; }
.modal-actions { justify-content: flex-end; margin-top: 10px; }

.btn-row { display: flex; gap: 6px; flex-wrap: wrap; }

.crop-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}
.crop-grid label { display: flex; flex-direction: column; font-size: 11px; color: var(--muted); gap: 2px; }
.crop-grid input { width: 100%; }

.field-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  align-items: center;
  gap: 8px;
}
.field-row label { color: var(--muted); }
.field-row input, .field-row select { width: 100%; }

@media (max-width: 1100px) {
  .layout { grid-template-columns: 160px 1fr 300px; }
}