:root {
  --bg: #f6f4ef;
  --panel: #ffffff;
  --ink: #1f2328;
  --muted: #5d6470;
  --line: #d9d5cc;
  --accent: #8a5a2b;
  --accent-ink: #ffffff;
  --accent-soft: #f1e6d8;
  --error: #b42318;
  --carcass: #e9dcc9;
  --door: #fbf8f3;
  --niche: #3b3631;
  --worktop: #6b5b4b;
  --plinth: #bdb3a5;
  --sheet: #efe9df;
  --piece: #ffffff;
  --piece-rotated: #fff4e2;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17181b;
    --panel: #212327;
    --ink: #eceae6;
    --muted: #a4a9b2;
    --line: #3a3d44;
    --accent: #d39b62;
    --accent-ink: #1b1308;
    --accent-soft: #3a2d20;
    --error: #ff8a80;
    --carcass: #5a4a37;
    --door: #3b3329;
    --niche: #101010;
    --worktop: #a08b74;
    --plinth: #4a4540;
    --sheet: #2b2824;
    --piece: #3b3329;
    --piece-rotated: #4a3a26;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 16px;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

h1 { margin: 0; font-size: 1.6rem; letter-spacing: -0.01em; }
h2 { margin: 1.25rem 0 0.6rem; font-size: 1.05rem; }
h3 { margin: 1rem 0 0.4rem; font-size: 0.95rem; }
h2:first-child { margin-top: 0; }
p { margin: 0.4rem 0; }
[hidden] { display: none !important; }

.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.strong { font-weight: 600; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.error { color: var(--error); }

.topbar, .projectbar, .note, .layout { max-width: 1440px; margin-left: auto; margin-right: auto; }
.topbar { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.projectbar { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: flex-end; margin-top: 12px; }
.project-select { min-width: 220px; flex: 0 1 320px; }
.status { flex-basis: 100%; margin: 0; min-height: 1.2em; font-size: 0.85rem; color: var(--accent); }
.note { margin-top: 6px; margin-bottom: 16px; padding: 8px 12px; border-radius: 8px; background: var(--accent-soft); font-size: 0.9rem; }

.layout { display: grid; grid-template-columns: minmax(320px, 460px) 1fr; gap: 16px; align-items: start; }
@media (max-width: 960px) { .layout { grid-template-columns: 1fr; } }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 16px; min-width: 0; }

.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.spread { justify-content: space-between; }
.panel > .spread { margin-top: 1.25rem; margin-bottom: 0.6rem; }
.panel > .spread:first-child, #result-panel > .spread { margin-top: 0; }
.spread h2 { margin: 0; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.grid2 + .grid2 { margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--line); }
#order-fields > :first-child { grid-column: 1 / -1; }
@media (max-width: 480px) { .grid2 { grid-template-columns: 1fr; } #order-fields > :first-child { grid-column: auto; } }

label { display: flex; flex-direction: column; gap: 4px; font-size: 0.85rem; color: var(--muted); }
label.check { flex-direction: row; align-items: center; gap: 8px; color: var(--ink); }
input, select {
  font: inherit; color: var(--ink); background: var(--panel);
  border: 1px solid var(--line); border-radius: 8px; padding: 7px 9px; min-width: 0; width: 100%;
}
input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--accent); }
input[aria-invalid="true"] { border-color: var(--error); }
input:focus-visible, select:focus-visible, button:focus-visible, summary:focus-visible, .file-button:focus-within {
  outline: 2px solid var(--accent); outline-offset: 2px;
}

button, .file-button {
  font: inherit; cursor: pointer; border-radius: 8px; padding: 8px 14px;
  border: 1px solid var(--accent); background: var(--accent); color: var(--accent-ink); font-weight: 600;
}
button.secondary, .file-button { background: transparent; color: var(--accent); }
button.danger { border-color: var(--error); color: var(--error); }
button:disabled { opacity: 0.45; cursor: not-allowed; }
button.icon { padding: 4px 8px; min-width: 32px; font-size: 1rem; line-height: 1.2; background: transparent; color: var(--muted); border-color: var(--line); }
.file-button { display: inline-block; position: relative; }
.file-button input { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; }

.lang { display: flex; gap: 6px; }
.lang button { padding: 6px 10px; font-size: 0.85rem; }

.materials { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 480px) { .materials { grid-template-columns: 1fr; } }
fieldset.material { margin: 0; border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px 10px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; min-width: 0; }
fieldset.material legend { font-weight: 600; padding: 0 4px; }
fieldset.material .wide { grid-column: 1 / -1; }

.cabinets { list-style: none; margin: 0 0 10px; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.cabinet {
  display: grid; grid-template-columns: 2.2em minmax(0, 1fr) minmax(0, 1fr) auto; gap: 6px; align-items: end;
  grid-template-areas: "tag type type actions" "tag w h h" "tag err err err";
  padding-bottom: 8px; border-bottom: 1px solid var(--line);
}
.cabinet .tag { grid-area: tag; font-weight: 700; color: var(--accent); align-self: start; padding-top: 8px; }
.cabinet .type { grid-area: type; }
.cabinet .dim:nth-of-type(2) { grid-area: w; }
.cabinet .dim:nth-of-type(3) { grid-area: h; }
.cabinet .mini { font-size: 0.72rem; }
.cabinet .actions { grid-area: actions; display: flex; gap: 2px; }
.cabinet .error { grid-area: err; margin: 0; font-size: 0.8rem; }
.copy-icon { fill: none; stroke: currentColor; stroke-width: 1.5; vertical-align: -2px; }

details { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 10px; }
summary { cursor: pointer; font-weight: 600; margin-bottom: 10px; }
#settings-fields > button { margin-top: 12px; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.tabs [role="tab"] { background: transparent; color: var(--muted); border: 0; border-bottom: 3px solid transparent; border-radius: 0; padding: 8px 12px; }
.tabs [role="tab"][aria-selected="true"] { color: var(--ink); border-bottom-color: var(--accent); }
.tabpanel { margin-top: 14px; }
.tabpanel.inactive { display: none; }

.two-col { display: grid; grid-template-columns: 3fr 2fr; gap: 16px; }
.two-col > * { min-width: 0; }
@media (max-width: 700px) { .two-col { grid-template-columns: 1fr; } }

.plan { border: 1px solid var(--line); border-radius: 8px; padding: 8px; background: var(--bg); }
.plan svg { display: block; width: 100%; height: auto; max-height: 340px; }
.plan .floor { stroke: var(--muted); stroke-width: 6; }
.plan .carcass { fill: var(--carcass); stroke: var(--ink); stroke-width: 4; }
.plan .door { fill: var(--door); stroke: var(--muted); stroke-width: 3; }
.plan .niche { fill: var(--niche); }
.plan .shelf { stroke: var(--ink); stroke-width: 18; }
.plan .worktop { fill: var(--worktop); }
.plan .plinth { fill: var(--plinth); }
.plan .label, .plan .dim { text-anchor: middle; dominant-baseline: middle; paint-order: stroke; stroke: var(--door); stroke-width: 14px; stroke-linejoin: round; }
.plan .label { fill: var(--ink); font: 700 90px system-ui, sans-serif; }
.plan .dim { fill: var(--muted); font: 64px system-ui, sans-serif; }

.sheet-figure { margin: 0 0 14px; }
.sheet-figure svg { display: block; width: 100%; height: auto; max-width: 900px; }
.sheet-figure figcaption { font-size: 0.85rem; color: var(--muted); margin-top: 4px; }
.sheet-figure .sheet { fill: var(--sheet); stroke: var(--muted); stroke-width: 4; }
.sheet-figure .piece { fill: var(--piece); stroke: var(--ink); stroke-width: 3; }
.sheet-figure .piece.rotated { fill: var(--piece-rotated); }
.sheet-figure .ref { fill: var(--ink); font-family: system-ui, sans-serif; font-weight: 700; text-anchor: middle; dominant-baseline: middle; }
.sheet-figure .size { fill: var(--muted); font-family: system-ui, sans-serif; text-anchor: middle; dominant-baseline: middle; }

.table-wrap { overflow-x: auto; margin-top: 6px; }
table { border-collapse: collapse; width: 100%; font-size: 0.9rem; }
th, td { padding: 6px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
td.wrap { white-space: normal; min-width: 8.5em; }
th { font-size: 0.8rem; color: var(--muted); font-weight: 600; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.center { text-align: center; }
.edge { width: 2.8em; color: var(--accent); font-variant-numeric: tabular-nums; }

.print-only { display: none; }

@media print {
  :root {
    --bg: #fff; --panel: #fff; --ink: #000; --muted: #444; --line: #999; --accent: #000;
    --carcass: #eee; --door: #fff; --niche: #555; --worktop: #777; --plinth: #ccc;
    --sheet: #f2f2f2; --piece: #fff; --piece-rotated: #e8e8e8;
  }
  body { padding: 0; font-size: 10pt; }
  .no-print { display: none !important; }
  .print-only { display: block; margin-bottom: 8pt; }
  .print-only h1 { font-size: 15pt; margin-bottom: 4pt; }
  .layout { display: block; }
  .panel { border: 0; padding: 0; }
  .tabpanel.inactive { display: block; }
  #panel-cutList, #panel-nesting { break-before: page; }
  .plan { border: 0; padding: 0; }
  .plan svg { max-height: 70mm; }
  .sheet-figure { break-inside: avoid; }
  .sheet-figure svg { max-width: 100%; }
  .table-wrap { overflow: visible; }
  th, td { padding: 3pt 4pt; }
  tr { break-inside: avoid; }
}