:root {
  --bg-darkest: #1a1a2e;
  --bg-dark: #1f1f35;
  --bg-panel: #24243d;
  --bg-card: #2a2a45;
  --bg-hover: #32324f;
  --border: #363654;
  --border-light: #45456a;
  --accent: #5b7cf7;
  --accent-bright: #7b9cff;
  --accent-hot: #e87da0;
  --text: #e2e4ea;
  --text-dim: #8b8da5;
  --text-muted: #5c5e76;
  --success: #4ecdc4;
  --warning: #f7c948;
  --danger: #e85d75;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif; background: var(--bg-darkest); color: var(--text); display: flex; height: 100vh; overflow: hidden; font-size: 13px; letter-spacing: 0.01em; }

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-light); }

/* ─── Sidebar ─── */
#sidebar {
  width: 240px; background: var(--bg-dark); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; flex-shrink: 0;
}
.sidebar-header {
  padding: 14px 14px 10px;
  border-bottom: 1px solid var(--border);
}
.sidebar-header h1 { font-size: 13px; font-weight: 600; letter-spacing: 0.02em; color: var(--text); }
.sidebar-header p { font-size: 11px; color: var(--text-dim); margin-top: 3px; }
.search-wrap {
  padding: 8px 10px; border-bottom: 1px solid var(--border);
  display: flex; gap: 5px; align-items: center;
}
#search {
  flex: 1; padding: 7px 10px; background: var(--bg-darkest); border: 1px solid var(--border);
  color: var(--text); border-radius: 6px; font-size: 12px; outline: none; transition: border-color .2s;
}
#search:focus { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(91,124,247,.15); }
.filter-btns { display: flex; gap: 3px; }
.filter-btn {
  padding: 4px 8px; font-size: 10px; border: 1px solid transparent; background: transparent;
  color: var(--text-dim); border-radius: 4px; cursor: pointer; transition: all .15s;
}
.filter-btn:hover { color: var(--text); background: var(--bg-hover); }
.filter-btn.active { background: var(--accent); color: #fff; }

#level-list { flex: 1; overflow-y: auto; }
.level-item {
  padding: 8px 12px; cursor: pointer; border-bottom: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
  font-size: 11px; transition: background .12s;
}
.level-item:hover { background: var(--bg-hover); }
.level-item.active { background: rgba(91,124,247,.15); border-left: 2px solid var(--accent); }
.level-item .li-left { display: flex; align-items: center; gap: 8px; }
.level-item .li-num { font-weight: 600; font-size: 10px; color: var(--text-dim); min-width: 24px; font-variant-numeric: tabular-nums; }
.level-item.active .li-num { color: var(--accent-bright); }
.level-item .li-name { font-weight: 400; }
.level-item.active .li-name { color: #fff; font-weight: 500; }
.level-item .li-badges { display: flex; gap: 4px; }
.badge { font-size: 9px; padding: 2px 5px; border-radius: 3px; font-weight: 600; text-transform: uppercase; letter-spacing: .3px; }
.badge-hard { background: rgba(247,201,72,.12); color: #d4a83a; }
.badge-superhard { background: rgba(232,93,117,.12); color: #e85d75; }
.badge-extra { background: rgba(78,205,196,.1); color: #4ecdc4; }
.level-item .li-mini {
  width: 32px; height: 24px; border-radius: 3px; background: var(--bg-darkest);
  border: 1px solid var(--border); overflow: hidden; flex-shrink: 0;
}

#stats-bar {
  padding: 8px 12px; border-top: 1px solid var(--border); font-size: 11px; color: var(--text-dim);
  display: flex; gap: 12px; background: var(--bg-panel);
}
.stat-chip { display: flex; align-items: center; gap: 4px; }
.stat-dot { width: 6px; height: 6px; border-radius: 50%; }

/* ─── Main ─── */
#main { flex: 1; display: flex; flex-direction: column; overflow: hidden; position: relative; }

/* Toolbar */
#toolbar {
  background: var(--bg-dark); border-bottom: 1px solid var(--border);
  display: flex; flex-direction: column; flex-shrink: 0;
}
.tb-row { display: flex; align-items: center; padding: 0 14px; }
.tb-main {
  height: 42px; min-height: 42px; border-bottom: 1px solid var(--border);
  justify-content: space-between; gap: 12px;
}
.tb-tools {
  height: 40px; min-height: 40px; gap: 12px; overflow-x: auto;
}
.tb-tools::-webkit-scrollbar { height: 4px; }

/* Mode toggle pills */
.mode-toggle { display: flex; gap: 0; background: var(--bg-darkest); border-radius: 6px; overflow: hidden; }
.mode-btn {
  padding: 5px 14px; font-size: 11px; font-weight: 500; cursor: pointer;
  background: transparent; color: var(--text-dim); border: none; transition: all .15s;
  white-space: nowrap;
}
.mode-btn:hover { color: var(--text); }
.mode-btn.active { background: var(--accent); color: #fff; }

/* Toolbar action buttons */
.tb-actions { display: flex; gap: 4px; }
.tb-action-btn {
  padding: 5px 12px; font-size: 11px; font-weight: 500; cursor: pointer;
  background: transparent; color: var(--text-dim); border: none;
  border-radius: 5px; transition: all .15s; white-space: nowrap;
}
.tb-action-btn:hover { background: var(--bg-hover); color: var(--text); }
.tb-action-btn.primary { background: var(--accent); color: #fff; }
.tb-action-btn.primary:hover { opacity: .85; }

/* Toolbar toggles */
.tb-toggles { display: flex; gap: 8px; align-items: center; }
.tool-group { display: flex; align-items: center; gap: 6px; }
.tool-group label { font-size: 11px; color: var(--text-dim); white-space: nowrap; }
.tool-group select, .tool-group input[type=range] {
  background: var(--bg-darkest); color: var(--text); border: 1px solid var(--border);
  padding: 4px 8px; border-radius: 4px; font-size: 11px; outline: none;
}
.tool-group select:focus { border-color: var(--accent); }
.tool-toggle {
  display: flex; align-items: center; gap: 4px; font-size: 11px; color: var(--text-dim); cursor: pointer;
}
.tool-toggle input { accent-color: var(--accent); }

/* ─── Design Tool Palette ─── */
.tool-palette { display: flex; gap: 3px; align-items: center; }
.tool-btn {
  display: inline-flex; align-items: center; gap: 4px;
  background: transparent; color: var(--text-dim);
  border: 1px solid transparent; border-radius: 5px;
  padding: 3px 7px; font-size: 10px; cursor: pointer;
  transition: all 0.15s;
}
.tool-btn:hover { background: var(--bg-hover); color: var(--text); }
.tool-btn.active {
  background: rgba(91,124,247,.15); color: var(--accent-bright);
  border-color: rgba(91,124,247,.3);
}
.tool-dot {
  display: inline-block; width: 12px; height: 12px;
  border-radius: 3px; flex-shrink: 0;
  font-size: 10px; line-height: 12px; text-align: center; color: #ff7675;
}

/* ─── Modal ─── */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5);
  display: flex; align-items: center; justify-content: center; z-index: 1000;
  backdrop-filter: blur(4px);
}
.modal {
  background: var(--bg-panel); border: 1px solid var(--border);
  border-radius: 8px; padding: 20px 22px; min-width: 360px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.4);
}
.modal h2 {
  font-size: 14px; font-weight: 600; color: var(--text);
  margin-bottom: 16px;
}
.modal-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.modal-row { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 12px; }
.modal-row label { color: var(--text-dim); font-size: 12px; }
.modal-row input[type=number], .modal-row select {
  background: var(--bg-darkest); color: var(--text);
  border: 1px solid var(--border); border-radius: 5px;
  padding: 6px 10px; font-size: 12px; min-width: 80px;
}
.modal-row select { min-width: 200px; }
.modal-preview {
  background: var(--bg-darkest); border: 1px solid var(--border);
  border-radius: 5px; padding: 10px; font-family: 'SF Mono', Menlo, monospace;
  font-size: 11px; line-height: 1.1; color: var(--text-dim);
  max-height: 240px; overflow: auto; white-space: pre;
  text-align: center; margin: 0;
}
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 18px; }
.modal-actions button {
  background: var(--bg-darkest); color: var(--text);
  border: 1px solid var(--border); border-radius: 5px;
  padding: 7px 16px; font-size: 12px; cursor: pointer; transition: all 0.15s;
}
.modal-actions button:hover { background: var(--bg-hover); }
.modal-actions button.primary {
  background: var(--accent); border-color: var(--accent-bright); color: #fff;
}
.modal-actions button.primary:hover { background: var(--accent-bright); }

/* ─── Color Swatches ─── */
.color-swatches { display: inline-flex; gap: 3px; align-items: center; padding: 2px 4px; background: var(--bg-card); border-radius: 5px; }
.color-swatch {
  width: 18px; height: 18px; border-radius: 4px;
  border: 2px solid transparent; cursor: pointer; padding: 0;
  transition: all 0.1s;
}
.color-swatch:hover { transform: scale(1.12); }
.color-swatch.active {
  border-color: #fff;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.3);
  transform: scale(1.08);
}
#level-title {
  font-size: 12px; font-weight: 500; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 200px;
}

/* Canvas area */
#canvas-area {
  flex: 1; overflow: hidden; position: relative; display: flex;
  background: #161628;
}
#canvas-wrap {
  flex: 1; overflow: auto; position: relative; cursor: default;
  display: flex; align-items: center; justify-content: center;
}
#canvas-wrap.moving { cursor: move; }
#canvas-wrap.playing { cursor: grab; }
#canvas-wrap.playing.dragging { cursor: grabbing; }

/* Play HUD */
#play-hud {
  position: absolute; top: 12px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 8px; align-items: center; pointer-events: none;
  z-index: 50;
}
.hud-pill {
  background: rgba(20, 20, 35, 0.85); border: 1px solid var(--border);
  padding: 6px 12px; border-radius: 999px; font-size: 12px;
  display: flex; gap: 8px; align-items: center; box-shadow: 0 2px 8px rgba(0,0,0,0.4);
}
.hud-pill .hud-key { color: var(--text-dim); font-size: 10px; text-transform: uppercase; letter-spacing: 0.05em; }
.hud-pill .hud-val { color: var(--text); font-weight: 600; font-variant-numeric: tabular-nums; }
#hud-banner {
  position: absolute; top: 60px; left: 50%; transform: translateX(-50%);
  background: rgba(20, 20, 35, 0.95); border: 2px solid var(--success);
  padding: 14px 28px; border-radius: 10px; font-size: 18px; font-weight: 600;
  color: var(--success); pointer-events: auto;
  box-shadow: 0 6px 24px rgba(0,0,0,0.5);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  white-space: nowrap;
}
#hud-banner.lost { border-color: var(--danger); color: var(--danger); }
#hud-banner button {
  margin-top: 4px; background: var(--bg-card); color: var(--text);
  border: 1px solid var(--border); padding: 6px 14px; border-radius: 6px;
  font-size: 12px; cursor: pointer;
}
#hud-banner button:hover { background: var(--bg-hover); }

/* Violation toast */
#violation-toast {
  position: fixed; top: 90px; left: 50%; transform: translateX(-50%);
  background: var(--danger); color: #fff; padding: 8px 20px;
  border-radius: 6px; font-size: 12px; font-weight: 500; z-index: 200;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3); pointer-events: none;
  opacity: 0; transition: opacity .3s;
}
#violation-toast.show { opacity: 1; }
canvas { image-rendering: auto; flex-shrink: 0; }

/* Hover tooltip */
#tooltip {
  position: fixed; pointer-events: none; z-index: 100;
  background: var(--bg-panel); border: 1px solid var(--border); border-radius: 6px;
  padding: 8px 12px; font-size: 11px; line-height: 1.6;
  box-shadow: 0 4px 16px rgba(0,0,0,.4); max-width: 240px; display: none;
}
#tooltip .tt-title { font-weight: 600; color: var(--text); margin-bottom: 4px; font-size: 11px; }
#tooltip .tt-row { display: flex; justify-content: space-between; gap: 12px; }
#tooltip .tt-key { color: var(--text-dim); }
#tooltip .tt-val { color: var(--text); font-weight: 500; }
#tooltip .tt-color { display: inline-block; width: 10px; height: 10px; border-radius: 2px; vertical-align: middle; margin-right: 4px; }

/* ─── Right Panel ─── */
#right-panel {
  width: 280px; background: var(--bg-dark); border-left: 1px solid var(--border);
  display: flex; flex-direction: column; flex-shrink: 0; overflow: hidden;
}
.panel-tabs {
  display: flex; border-bottom: 1px solid var(--border);
}
.panel-tab {
  flex: 1; padding: 9px 8px; text-align: center; font-size: 11px; font-weight: 500;
  color: var(--text-dim); cursor: pointer; border-bottom: 2px solid transparent; transition: all .15s;
}
.panel-tab:hover { color: var(--text); }
.panel-tab.active { color: var(--text); border-bottom-color: var(--accent); }
.panel-content { flex: 1; overflow-y: auto; }
.panel-section { padding: 12px 14px; border-bottom: 1px solid var(--border); }
.panel-section h3 { font-size: 10px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-dim); margin-bottom: 8px; font-weight: 500; }

/* Info cards */
.info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.info-card {
  background: var(--bg-card); border-radius: 5px; padding: 8px 10px;
}
.info-card .ic-value { font-size: 15px; font-weight: 600; color: var(--text); font-variant-numeric: tabular-nums; }
.info-card .ic-label { font-size: 10px; color: var(--text-dim); margin-top: 1px; }
.info-card.wide { grid-column: 1 / -1; }

/* Color distribution bar */
.color-bar { display: flex; height: 6px; border-radius: 3px; overflow: hidden; margin-bottom: 8px; }
.color-bar-seg { transition: width .3s; }
.color-list { display: flex; flex-wrap: wrap; gap: 4px; }
.color-chip {
  display: flex; align-items: center; gap: 4px; font-size: 10px; color: var(--text-dim);
  padding: 2px 6px; border-radius: 3px;
}
.color-chip .cc-swatch { width: 8px; height: 8px; border-radius: 2px; }
.color-chip .cc-count { font-weight: 500; color: var(--text); }

/* JSON viewer */
#json-view {
  font-family: 'SF Mono', 'Menlo', 'Consolas', monospace; font-size: 11px; line-height: 1.5;
  padding: 14px; color: var(--text-dim); white-space: pre-wrap; word-break: break-all;
}
.json-key { color: var(--accent-bright); }
.json-str { color: var(--success); }
.json-num { color: var(--warning); }
.json-bool { color: var(--accent-hot); }

/* Legend panel */
.legend-section { margin-bottom: 12px; }
.legend-section h4 { font-size: 10px; text-transform: uppercase; letter-spacing: 1px; color: var(--text-dim); margin-bottom: 8px; }
.legend-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
.legend-item { display: flex; align-items: center; gap: 6px; font-size: 11px; color: var(--text-dim); padding: 3px 0; }
.legend-swatch { width: 16px; height: 16px; border-radius: 3px; flex-shrink: 0; border: 1px solid rgba(255,255,255,.1); }

/* Zoom controls */
.zoom-controls {
  position: absolute; bottom: 12px; left: 12px; display: flex; gap: 2px; z-index: 10;
  background: var(--bg-panel); border-radius: 6px; padding: 2px; border: 1px solid var(--border);
}
.zoom-btn {
  width: 28px; height: 28px; border-radius: 4px; background: transparent; border: none;
  color: var(--text-dim); font-size: 14px; cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: all .15s;
}
.zoom-btn:hover { background: var(--bg-hover); color: var(--text); }
#zoom-label { font-size: 10px; color: var(--text-dim); padding: 0 6px; display: flex; align-items: center; font-variant-numeric: tabular-nums; }

/* Minimap */
#minimap-wrap {
  position: absolute; bottom: 16px; right: 16px; z-index: 10;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 6px; padding: 4px; overflow: hidden;
}
#minimap { display: block; border-radius: 4px; }
#minimap-viewport {
  position: absolute; border: 1.5px solid var(--accent-bright); pointer-events: none; border-radius: 1px;
}