:root {
  --bg: #f6f5f2;
  --panel: #ffffff;
  --text: #22262b;
  --muted: #6b7178;
  --border: #dcd9d2;
  --accent: #2f5fb3;
  --accent-text: #ffffff;
  --cell: #ffffff;
  --hole: #22262b;
  --grid: #d3d0c8;
  --card: #e9dcc0;
  --card-edge: #b9a77f;
  --warn-bg: #fff3d6;
  --warn-text: #7a5300;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #17191c;
    --panel: #212429;
    --text: #e6e7e9;
    --muted: #9aa0a7;
    --border: #363a41;
    --accent: #6b9cf0;
    --accent-text: #0f1420;
    --cell: #2b2f35;
    --hole: #e6e7e9;
    --grid: #3c4148;
    --card: #cdbd98;
    --card-edge: #8f7f5a;
    --warn-bg: #3d3216;
    --warn-text: #f4d27c;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
}
header { padding: 20px 16px 4px; max-width: 1500px; margin: 0 auto; }
header h1 { margin: 0 0 4px; font-size: 24px; }
header p { margin: 0; color: var(--muted); }

main {
  display: grid;
  gap: 16px;
  padding: 16px;
  max-width: 1500px;
  margin: 0 auto;
  grid-template-columns: 300px minmax(0, 1fr) minmax(0, 1fr);
  grid-template-areas:
    "source edit result"
    "settings edit result";
  align-items: start;
}
#source { grid-area: source; }
#edit { grid-area: edit; }
#result { grid-area: result; }
#settings { grid-area: settings; }
@media (max-width: 1100px) {
  main {
    grid-template-columns: 300px minmax(0, 1fr);
    grid-template-areas: "source edit" "settings edit" "result result";
  }
}
@media (max-width: 700px) {
  main { grid-template-columns: minmax(0, 1fr); grid-template-areas: "source" "edit" "result" "settings"; }
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  min-width: 0;
}
.panel h2 { margin: 0 0 12px; font-size: 17px; }

.field { margin: 12px 0; }
.field label { display: block; font-weight: 600; font-size: 13px; margin-bottom: 4px; }
.row { display: flex; gap: 8px; }
.row input { flex: 1; min-width: 0; }
small, .note { display: block; color: var(--muted); font-size: 12.5px; margin: 4px 0; }
.check { display: flex; gap: 8px; align-items: center; margin: 8px 0; }

input[type="number"], select {
  width: 100%;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}
input[type="range"] { width: 100%; }

button {
  font: inherit;
  font-size: 14px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
}
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); font-weight: 600; }

.drop {
  display: block;
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 18px 12px;
  text-align: center;
  color: var(--muted);
  cursor: pointer;
  margin-bottom: 10px;
}
.drop.over, .drop:hover { border-color: var(--accent); color: var(--text); }
.drop input { display: none; }
#thumb { display: block; max-width: 100%; max-height: 140px; margin: 0 auto 10px; border-radius: 6px; }

.toolbar { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0; }
.editor-wrap { overflow: auto; max-height: 75vh; }
#editor { touch-action: none; cursor: crosshair; display: block; }

.colors { display: flex; gap: 16px; flex-wrap: wrap; font-size: 13px; margin-bottom: 8px; }
.colors label { display: flex; align-items: center; gap: 6px; }
#fabric { display: block; max-width: 100%; border-radius: 6px; border: 1px solid var(--border); }

.summary { margin: 12px 0 6px; }
.warning { background: var(--warn-bg); color: var(--warn-text); padding: 8px 10px; border-radius: 6px; font-size: 13.5px; }
.downloads { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; }
.cards { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-start; }
.cards figure { margin: 0; }
.cards figcaption { font-size: 12px; color: var(--muted); text-align: center; }
.cards svg { display: block; max-width: 100%; height: auto; }
.cards .card { fill: var(--card); stroke: var(--card-edge); stroke-width: 0.3; }
.cards .hole { fill: var(--panel); }
.cards .hole.feed { fill: var(--muted); opacity: 0.35; }
.cards .hole.clip { fill: var(--accent); opacity: 0.5; }
.cards text { fill: var(--muted); font-size: 3.5px; font-family: system-ui, sans-serif; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 10px; }
.grid2 .field { margin: 8px 0; }
details { margin-top: 12px; }
details summary { cursor: pointer; font-weight: 600; font-size: 14px; }

[hidden] { display: none !important; }