/* ═══════════════════════════════════════════════════════════
   SKETCH — DIN A4 Canvas Drawing Mode
   GeniusHub v21 — Redesign
   Ruhig, kein Glassmorphism.
   ═══════════════════════════════════════════════════════════ */

/* ── Page Container ── */
#pg-sketch {
  display: none;
  flex: 1;
  overflow: hidden;
  flex-direction: column;
}
#pg-sketch.on { display: flex; }


/* ── Toolbar ── */
.sk-toolbar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: var(--bg-0);
  border-bottom: 1px solid var(--line);
  flex-shrink: 0;
  flex-wrap: wrap;
}

.sk-tool {
  padding: 6px 11px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: var(--bg-1);
  color: var(--fg-muted);
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color var(--dur-1) var(--ease), color var(--dur-1) var(--ease), background var(--dur-1) var(--ease);
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
  font-family: var(--f-sans);
}
.sk-tool:hover { border-color: var(--line-2); color: var(--fg); }
.sk-tool.on {
  border-color: var(--accent-ring);
  color: var(--accent);
  background: var(--accent-weak);
}
.sk-tool.danger {
  border-color: color-mix(in oklab, var(--err) 30%, var(--line));
  color: var(--err);
}
.sk-tool.danger:hover {
  background: color-mix(in oklab, var(--err) 10%, transparent);
}


/* ── Color Swatches ── */
.sk-colors { display: flex; gap: 5px; align-items: center; }
.sk-swatch {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--dur-1) var(--ease), box-shadow var(--dur-1) var(--ease);
  flex-shrink: 0;
  box-shadow: 0 0 0 1px var(--line) inset;
}
.sk-swatch:hover { transform: scale(1.12); }
.sk-swatch.on {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}


/* ── Width Slider ── */
.sk-width {
  width: 64px;
  height: 3px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--line-2);
  border-radius: 99px;
  outline: none;
  cursor: pointer;
}
.sk-width::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-0);
  cursor: pointer;
  box-shadow: 0 0 0 1px var(--accent-ring);
}


/* ── Eraser Dropdown ── */
.sk-eraser-wrap { position: relative; }
.sk-eraser-menu {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 6px;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 4px;
  display: none;
  z-index: 10;
  min-width: 130px;
  box-shadow: 0 12px 28px rgba(0, 0, 0, .3);
}
html.white-mode .sk-eraser-menu { box-shadow: 0 12px 24px rgba(15, 23, 42, .12); }
.sk-eraser-menu.on { display: block; }
.sk-eraser-opt {
  padding: 7px 11px;
  border-radius: var(--r-sm);
  font-size: 11px;
  color: var(--fg-muted);
  cursor: pointer;
  transition: background var(--dur-1) var(--ease), color var(--dur-1) var(--ease);
  white-space: nowrap;
  font-family: var(--f-sans);
}
.sk-eraser-opt:hover { background: var(--bg-2); color: var(--fg); }
.sk-eraser-opt.on { color: var(--accent); }


/* ── Separator ── */
.sk-sep {
  width: 1px;
  height: 22px;
  background: var(--line);
  flex-shrink: 0;
}


/* ── Info Text ── */
.sk-info {
  font-size: 10px;
  color: var(--fg-dim);
  letter-spacing: .04em;
  margin-left: auto;
  flex-shrink: 0;
  font-family: var(--f-mono);
}


/* ── Canvas Area ── */
.sk-canvas-area {
  flex: 1;
  overflow: auto;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 20px;
  background: var(--bg-2);
}
.sk-canvas-wrap {
  position: relative;
  background: #fff;
  box-shadow: 0 4px 24px rgba(0, 0, 0, .25);
  flex-shrink: 0;
  border-radius: 2px;
}
html.white-mode .sk-canvas-wrap { box-shadow: 0 4px 18px rgba(15, 23, 42, .1); border: 1px solid var(--line); }
.sk-canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: crosshair;
  touch-action: none;
}


/* ── Selection Rectangle ── */
.sk-select-rect {
  position: absolute;
  border: 1.5px dashed var(--err);
  background: color-mix(in oklab, var(--err) 10%, transparent);
  pointer-events: none;
  display: none;
}


/* ── Sheet Bar ── */
.sk-sheet-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg-0);
  border-top: 1px solid var(--line);
  flex-shrink: 0;
  overflow-x: auto;
}
.sk-sheet-bar::-webkit-scrollbar { display: none; }


/* ── Category Filters ── */
.sk-cat-filters { display: flex; gap: 4px; flex-shrink: 0; }
.sk-cat-btn {
  padding: 5px 10px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: transparent;
  font-size: 10px;
  color: var(--fg-dim);
  cursor: pointer;
  transition: color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease), background var(--dur-1) var(--ease);
  white-space: nowrap;
  font-family: var(--f-sans);
  font-weight: 500;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.sk-cat-btn:hover { color: var(--fg); border-color: var(--line-2); }
.sk-cat-btn.on {
  border-color: var(--accent-ring);
  color: var(--accent);
  background: var(--accent-weak);
}


/* ── Sheet Thumbnails ── */
.sk-sheets {
  display: flex;
  gap: 8px;
  flex: 1;
  overflow-x: auto;
  padding: 2px 0;
}
.sk-sheets::-webkit-scrollbar { display: none; }
.sk-sheet-thumb {
  width: 46px;
  height: 64px;
  border-radius: var(--r-sm);
  border: 1.5px solid var(--line);
  background: #fff;
  cursor: pointer;
  transition: border-color var(--dur-1) var(--ease), box-shadow var(--dur-1) var(--ease);
  flex-shrink: 0;
  overflow: hidden;
  position: relative;
}
.sk-sheet-thumb:hover { border-color: var(--line-2); }
.sk-sheet-thumb.on {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}
.sk-sheet-thumb canvas {
  width: 100%;
  height: 100%;
  display: block;
}
.sk-sheet-num {
  position: absolute;
  bottom: 2px;
  right: 3px;
  font-size: 8px;
  color: #666;
  font-weight: 600;
  font-family: var(--f-mono);
}


/* ── Empty State ── */
.sk-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  padding: 40px;
  color: var(--fg-dim);
}
.sk-empty .icon {
  font-size: 40px;
  opacity: .3;
  margin-bottom: 14px;
  color: var(--fg-muted);
}
.sk-empty p {
  font-size: 13px;
  line-height: 1.7;
  text-align: center;
  max-width: 280px;
  color: var(--fg-muted);
}


/* ── Category Edit Modal ── */
.sk-cat-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 11px;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  margin-bottom: 6px;
}
.sk-cat-emoji {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  cursor: pointer;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: var(--bg-2);
  transition: border-color var(--dur-1) var(--ease);
  flex-shrink: 0;
}
.sk-cat-emoji:hover { border-color: var(--line-2); }
.sk-cat-name-inp {
  flex: 1;
  padding: 5px 10px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  color: var(--fg);
  font-size: 12px;
  outline: none;
  min-width: 0;
  font-family: var(--f-sans);
  transition: border-color var(--dur-1) var(--ease), box-shadow var(--dur-1) var(--ease);
}
.sk-cat-name-inp:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}


/* ── Responsive ── */
@media (max-width: 480px) {
  .sk-toolbar { padding: 8px 10px; gap: 5px; }
  .sk-tool { padding: 5px 9px; font-size: 10px; }
  .sk-swatch { width: 20px; height: 20px; }
  .sk-canvas-area { padding: 10px; }
  .sk-sheet-bar { padding: 8px 10px; }
  .sk-canvas-wrap { max-width: 100%; }
}