:root {
  --bg: #f4f2ee;
  --panel: #ffffff;
  --text: #1f2328;
  --muted: #5f6670;
  --line: #dcd8d0;
  --accent: #2f6f4f;
  --accent-text: #ffffff;
  --clean: #8fc9a3;
  --warn: #9a5b00;
  --error: #b42318;
  --view: #e9e6e0;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17191c;
    --panel: #1f2226;
    --text: #e7e9ec;
    --muted: #9aa1ab;
    --line: #353a40;
    --accent: #5fb98a;
    --accent-text: #0f1a14;
    --clean: #3f7d57;
    --warn: #f0b35a;
    --error: #ff8a80;
    --view: #24272b;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; height: 100%; }
body {
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg); color: var(--text);
  display: flex; flex-direction: column;
}
header { padding: 12px 16px; border-bottom: 1px solid var(--line); }
header h1 { margin: 0; font-size: 18px; }
header p { margin: 2px 0 0; color: var(--muted); }
main { flex: 1; display: flex; min-height: 0; }
#panel {
  width: 400px; flex: none; overflow-y: auto; background: var(--panel);
  border-right: 1px solid var(--line); padding: 4px 16px 24px;
}
#view { flex: 1; position: relative; background: var(--view); min-height: 320px; min-width: 0; overflow: hidden; }
#view canvas { position: absolute; inset: 0; display: block; width: 100%; height: 100%; }
#empty { position: absolute; inset: 0; display: grid; place-items: center; color: var(--muted); }
#status { position: absolute; left: 12px; top: 10px; color: var(--muted); z-index: 1; }
h2 { font-size: 14px; margin: 18px 0 8px; }
.hint { color: var(--muted); font-size: 12.5px; margin: 6px 0; }
.drop {
  display: block; border: 1.5px dashed var(--line); border-radius: 8px; padding: 18px;
  text-align: center; cursor: pointer; color: var(--muted);
}
.drop.over { border-color: var(--accent); color: var(--text); }
button { font: inherit; cursor: pointer; }
button.link { background: none; border: 0; color: var(--accent); padding: 6px 0; text-decoration: underline; }
button.primary {
  background: var(--accent); color: var(--accent-text); border: 0; border-radius: 6px;
  padding: 8px 14px; font-weight: 600; margin-top: 8px;
}
button.primary:disabled { opacity: 0.5; cursor: not-allowed; }
input[type=text], input[type=number], select {
  font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--line);
  border-radius: 5px; padding: 3px 6px; min-width: 0;
}
input[type=number] { width: 80px; }
#parts { list-style: none; padding: 0; margin: 8px 0 0; }
#parts li {
  display: flex; gap: 8px; align-items: center; padding: 6px 0; border-bottom: 1px solid var(--line);
}
#parts li input[type=text] { width: 110px; }
#parts .meta { color: var(--muted); font-size: 12px; flex: 1; }
#parts .bad { color: var(--error); }
#parts button { background: none; border: 0; color: var(--muted); font-size: 16px; }
button.secondary {
  background: none; color: var(--accent); border: 1px solid var(--accent); border-radius: 6px;
  padding: 6px 12px; font-weight: 600;
}
.param { border: 1px solid var(--line); border-radius: 8px; padding: 10px; margin-bottom: 10px; }
.param.over { border-color: var(--accent); }
.param .head { display: flex; gap: 8px; align-items: center; }
.param .head .name { flex: 1; font-weight: 600; }
.param .head .remove { background: none; border: 0; color: var(--muted); font-size: 16px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px 10px; margin-top: 8px; }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.grid label { display: flex; flex-direction: column; font-size: 12px; color: var(--muted); }
.grid input { width: 100%; }
.slots { display: flex; flex-direction: column; gap: 4px; }
.slot {
  display: grid; grid-template-columns: auto 1fr; gap: 0 8px; align-items: baseline;
  border: 1px dashed var(--line); border-radius: 6px; padding: 5px 8px; cursor: pointer; font-size: 12.5px;
}
.slot .pname { font-weight: 600; }
.slot .file { color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.slot .state { grid-column: 2; color: var(--muted); }
.slot.good { border-style: solid; border-color: var(--clean); }
.slot.good .state { color: var(--accent); }
.slot.warn { border-style: solid; border-color: var(--warn); }
.slot.warn .state { color: var(--warn); }
.slot.bad { border-style: solid; border-color: var(--error); }
.slot.bad .state { color: var(--error); }
.preview { display: flex; align-items: center; gap: 8px; margin-top: 8px; font-size: 12.5px; }
.preview input[type=range] { flex: 1; }
.preview output { min-width: 48px; text-align: right; font-variant-numeric: tabular-nums; }
.msg { font-size: 12.5px; margin-top: 6px; }
.msg.warn { color: var(--warn); } .msg.error { color: var(--error); }
.row { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin: 6px 0; }
.row input[type=text] { flex: 1; }
@media (max-width: 760px) {
  main { flex-direction: column; }
  #panel { width: 100%; border-right: 0; border-bottom: 1px solid var(--line); order: 2; }
  #view { height: 50vh; flex: none; order: 1; }
}