:root {
  --bg: #1e2230; --panel: #2a2f3f; --panel2: #343a4d; --border: #3d445a;
  --text: #e8eaf0; --muted: #9aa0b0; --accent: #3b82f6; --accent2: #2563eb;
  --danger: #ef4444;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font-family: system-ui, -apple-system, sans-serif; min-height: 100vh; }
header { padding: 1rem 1.5rem; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 1rem; }
header h1 { margin: 0; font-size: 1.05rem; font-weight: 600; }
header .status { color: var(--muted); font-size: .85rem; margin-left: auto; }
header button {
  background: var(--panel2); color: var(--text); border: 1px solid var(--border);
  padding: .5rem .75rem; border-radius: 6px; cursor: pointer; font-size: .9rem;
}
header button:hover:not(:disabled) { background: #3f4660; }
header button:disabled { opacity: .5; cursor: not-allowed; }
.connection-state {
  font-size: .85rem;
  color: var(--muted);
}
.connection-state.connected {
  color: #86efac;
}
main { display: grid; grid-template-columns: 1fr 300px; gap: 1.5rem;
  padding: 1.5rem; max-width: 1400px; margin: 0 auto; }
.stage { display: flex; flex-direction: column; align-items: center; gap: 1rem; }
.canvas-wrap {
  background: #fff; box-shadow: 0 4px 20px rgba(0,0,0,.4);
  border-left: 3px solid #ef4444; position: relative; user-select: none;
}
.canvas-wrap canvas { display: block; }
#previewBitmap {
  position: absolute; inset: 0; z-index: 3; image-rendering: pixelated;
  pointer-events: none;
}
.item {
  position: absolute; cursor: move; outline: 1px solid transparent; z-index: 2;
  padding: 2px; transform-origin: top left;
}
.item.selected { outline: 2px solid var(--accent); outline-offset: 1px; }
.item .handle {
  position: absolute; right: -6px; bottom: -6px; width: 12px; height: 12px;
  background: var(--accent); border: 2px solid #fff; border-radius: 2px;
  cursor: nwse-resize;
}
.item:not(.selected) .handle { display: none; }
.item img, .item svg, .item canvas { display: block; pointer-events: none; }
.rect-shape {
  display: block;
  pointer-events: none;
}
.circle-shape {
  display: block;
  pointer-events: none;
}
.line-shape {
  display: block;
  overflow: visible;
  pointer-events: none;
}
.image-shape {
  display: block;
  pointer-events: none;
  transform-origin: center center;
}
.toolbar {
  display: flex; gap: .5rem; background: var(--panel); padding: .5rem;
  border-radius: 8px; align-items: center; flex-wrap: wrap;
}
.toolbar button {
  background: var(--panel2); color: var(--text); border: 1px solid var(--border);
  padding: .5rem .75rem; border-radius: 6px; cursor: pointer; font-size: .9rem;
  display: inline-flex; align-items: center; gap: .4rem;
}
.toolbar button:hover:not(:disabled) { background: #3f4660; }
.toolbar button:disabled { opacity: .5; cursor: not-allowed; }
.toolbar button.primary { background: var(--accent); border-color: var(--accent2); }
.toolbar button.primary:hover:not(:disabled) { background: var(--accent2); }
.toolbar .sep { width: 1px; height: 24px; background: var(--border); margin: 0 .25rem; }
.toolbar-check {
  background: var(--panel2); color: var(--text); border: 1px solid var(--border);
  padding: .5rem .75rem; border-radius: 6px; cursor: pointer; font-size: .9rem;
  display: inline-flex; align-items: center; gap: .4rem;
}
.toolbar-check:hover { background: #3f4660; }
.toolbar-check input { accent-color: var(--accent); }
#items.preview-source-hidden {
  visibility: hidden;
  pointer-events: none;
}
.material-icons {
  font-family: 'Material Icons';
  font-weight: normal;
  font-style: normal;
  font-size: 24px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-feature-settings: 'liga';
  -webkit-font-smoothing: antialiased;
  font-feature-settings: 'liga';
}
.icon-picker {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: .5rem;
  flex: 1 0 100%;
  width: 100%;
  min-width: 0;
  padding-top: .5rem;
  border-top: 1px solid var(--border);
}
.icon-picker input {
  width: min(100%, 24rem);
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  padding: .4rem .5rem;
  border-radius: 4px;
  font: inherit;
}
.icon-picker input:focus {
  outline: none;
  border-color: var(--accent);
}
.icon-grid {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  flex: 0 0 auto;
  min-width: 0;
  height: 400px;
  overflow-y: auto;
}
.icon-choice {
  width: 2.15rem;
  height: 2.15rem;
  flex: 0 0 auto;
  min-width: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--panel2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
}
.icon-choice:hover,
.icon-choice:focus {
  background: #3f4660;
  border-color: var(--accent);
  outline: none;
}
.icon-choice .material-icons {
  font-size: 26px;
}
.item.icon-item {
  font-family: 'Material Icons';
  color: #000;
  line-height: 1;
}
aside {
  background: var(--panel); border-radius: 8px; padding: 1rem;
  align-self: start; position: sticky; top: 1rem;
}
aside h2 { margin: 0 0 .75rem; font-size: .95rem; font-weight: 600; }
aside .row { display: flex; flex-direction: column; gap: .3rem; margin-bottom: .75rem; }
aside label { font-size: .8rem; color: var(--muted); }
aside input, aside select, aside textarea {
  background: var(--bg); color: var(--text); border: 1px solid var(--border);
  padding: .4rem .5rem; border-radius: 4px; font-size: .9rem; width: 100%;
  font-family: inherit;
}
aside input:focus, aside select:focus, aside textarea:focus {
  outline: none; border-color: var(--accent);
}
aside .empty { color: var(--muted); font-size: .85rem; }
aside button.delete {
  background: transparent; color: var(--danger); border: 1px solid var(--danger);
  padding: .4rem .75rem; border-radius: 4px; cursor: pointer; font-size: .85rem;
  width: 100%; margin-top: .5rem;
}
aside button.delete:hover { background: var(--danger); color: #fff; }
.settings-row { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; }
#toast {
  position: fixed; top: 1rem; right: 1rem; padding: .75rem 1rem;
  background: var(--panel); border: 1px solid var(--border); border-radius: 6px;
  opacity: 0; transform: translateY(-10px); transition: all .2s; pointer-events: none;
  max-width: 20rem;
}
#toast.show { opacity: 1; transform: translateY(0); }
#toast.error { border-color: var(--danger); }