/* ---------- Font: Google Sans (self-hosted, SIL OFL 1.1 — see fonts/OFL.txt) ---------- */
@font-face {
  font-family: "Google Sans";
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url(fonts/google-sans-latin-ext.woff2) format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Google Sans";
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url(fonts/google-sans-latin.woff2) format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ---------- Theme tokens (Material 3 inspired) ---------- */
:root {
  color-scheme: light;
  --bg: #f8fafd;
  --surface: #ffffff;
  --surface-2: #f0f4f9;
  --surface-3: #e5eaf1;
  --outline: #c4c7c5;
  --outline-soft: #e1e3e1;
  --text: #1f1f1f;
  --muted: #444746;
  --primary: #0b57d0;
  --on-primary: #ffffff;
  --sec: #c2e7ff;
  --on-sec: #001d35;
  --danger: #b3261e;
  --shadow-1: 0 1px 2px rgba(0, 0, 0, .1), 0 1px 3px 1px rgba(0, 0, 0, .06);
  --shadow-2: 0 2px 6px 2px rgba(0, 0, 0, .12), 0 1px 2px rgba(0, 0, 0, .18);

  /* Canvas (drawing) colours — the SVG falls back to these light values on export */
  --cv-paper: #ffffff;
  --cv-grid: #eef0f3;
  --cv-grid-major: #d8dce2;
  --cv-room: #f5f1e8;
  --cv-room-line: #cfc7b6;
  --cv-ink: #2b2b2b;
  --cv-furn: #555555;
  --cv-label: #333333;
  --cv-label-muted: #666666;
  --cv-dim: #c0392b;
  --cv-accent: #0b57d0;
  --cv-accent-soft: rgba(11, 87, 208, .08);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #131314;
    --surface: #1e1f20;
    --surface-2: #282a2c;
    --surface-3: #333537;
    --outline: #5c5f61;
    --outline-soft: #333537;
    --text: #e3e3e3;
    --muted: #c4c7c5;
    --primary: #a8c7fa;
    --on-primary: #062e6f;
    --sec: #004a77;
    --on-sec: #c2e7ff;
    --danger: #f2b8b5;
    --shadow-1: 0 1px 2px rgba(0, 0, 0, .5), 0 1px 3px 1px rgba(0, 0, 0, .3);
    --shadow-2: 0 2px 6px 2px rgba(0, 0, 0, .45), 0 1px 2px rgba(0, 0, 0, .5);
    --cv-paper: #1b1c1e;
    --cv-grid: #25272a;
    --cv-grid-major: #34373b;
    --cv-room: #26282c;
    --cv-room-line: #43474d;
    --cv-ink: #e3e3e3;
    --cv-furn: #b9bcc1;
    --cv-label: #e3e3e3;
    --cv-label-muted: #a5a8ad;
    --cv-dim: #ff8a80;
    --cv-accent: #a8c7fa;
    --cv-accent-soft: rgba(168, 199, 250, .12);
  }
  :root:not([data-theme="light"]) .i-dark { display: none; }
  :root:not([data-theme="light"]) .i-light { display: block; }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #131314;
  --surface: #1e1f20;
  --surface-2: #282a2c;
  --surface-3: #333537;
  --outline: #5c5f61;
  --outline-soft: #333537;
  --text: #e3e3e3;
  --muted: #c4c7c5;
  --primary: #a8c7fa;
  --on-primary: #062e6f;
  --sec: #004a77;
  --on-sec: #c2e7ff;
  --danger: #f2b8b5;
  --shadow-1: 0 1px 2px rgba(0, 0, 0, .5), 0 1px 3px 1px rgba(0, 0, 0, .3);
  --shadow-2: 0 2px 6px 2px rgba(0, 0, 0, .45), 0 1px 2px rgba(0, 0, 0, .5);
  --cv-paper: #1b1c1e;
  --cv-grid: #25272a;
  --cv-grid-major: #34373b;
  --cv-room: #26282c;
  --cv-room-line: #43474d;
  --cv-ink: #e3e3e3;
  --cv-furn: #b9bcc1;
  --cv-label: #e3e3e3;
  --cv-label-muted: #a5a8ad;
  --cv-dim: #ff8a80;
  --cv-accent: #a8c7fa;
  --cv-accent-soft: rgba(168, 199, 250, .12);
}
:root[data-theme="dark"] .i-dark { display: none; }
:root[data-theme="dark"] .i-light { display: block; }
.i-light { display: none; }

/* ---------- Base ---------- */
* { box-sizing: border-box; scrollbar-width: thin; scrollbar-color: var(--outline) transparent; }
[hidden] { display: none !important; }
html, body { height: 100%; margin: 0; }
body {
  font: 14px/1.45 "Google Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

button, input, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

/* Pill button (Material outlined / text button) */
button {
  padding: 7px 16px;
  border: 1px solid var(--outline);
  border-radius: 999px;
  background: transparent;
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background-color .15s, color .15s, border-color .15s;
}
button:hover { background: var(--surface-2); }
button:disabled { opacity: .38; cursor: default; background: transparent; }

input, select {
  height: 34px;
  padding: 0 10px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: var(--surface-2);
  font-size: 13.5px;
  transition: border-color .15s, background-color .15s;
}
input:hover, select:hover { border-color: var(--outline); }
input:focus, select:focus { outline: none; border-color: var(--primary); background: var(--surface); }
input[type=checkbox] { height: auto; padding: 0; }

/* Round icon button */
.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--muted);
}
.icon-btn svg { width: 20px; height: 20px; fill: currentColor; }
.icon-btn:hover { background: var(--surface-3); color: var(--text); }
.icon-btn:disabled:hover { background: transparent; color: var(--muted); }
.icon-btn.sm { width: 32px; height: 32px; }
.icon-btn.sm svg { width: 18px; height: 18px; }

/* ---------- Top app bar ---------- */
.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
  padding: 8px 16px;
}
.brand { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 500; margin-right: auto; }
.brand svg { width: 26px; height: 26px; color: var(--primary); }
.group { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 8px; }
.actions { gap: 2px; }
.divider { width: 1px; height: 24px; margin: 0 6px; background: var(--outline-soft); }

.field-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 40px;
  padding: 0 6px 0 16px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--muted);
  font-size: 12.5px;
}
.field-pill select, .field-pill input { height: 32px; background: transparent; border-color: transparent; font-weight: 500; color: var(--text); }
.field-pill input { width: 70px; }
.field-pill select:focus, .field-pill input:focus { background: var(--surface); }

/* Filter-chip style toggles */
.chip { position: relative; display: inline-flex; cursor: pointer; }
.chip input { position: absolute; opacity: 0; pointer-events: none; }
.chip span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 14px;
  border: 1px solid var(--outline);
  border-radius: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  user-select: none;
  transition: background-color .15s, border-color .15s;
}
.chip:hover span { background: var(--surface-2); }
.chip input:checked + span { background: var(--sec); border-color: var(--sec); color: var(--on-sec); }
.chip input:checked + span::before { content: "✓"; font-size: 12px; }
.chip input:focus-visible + span { outline: 2px solid var(--primary); outline-offset: 2px; }

/* ---------- Layout ---------- */
main {
  flex: 1;
  display: grid;
  grid-template-columns: 196px 1fr 320px;
  gap: 12px;
  padding: 0 12px;
  min-height: 0;
}
main.pal-collapsed { grid-template-columns: 1fr 320px; }
main.pal-collapsed .palette { display: none; }

/* ---------- Tools panel (left) ---------- */
.palette {
  overflow: auto;
  padding: 12px 10px;
  border-radius: 16px;
  background: var(--surface);
}
.pal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0 0 8px 6px;
  font-size: 14px;
  font-weight: 500;
}
.search-wrap { position: relative; margin-bottom: 8px; }
.search-wrap svg { position: absolute; left: 12px; top: 11px; width: 18px; height: 18px; fill: var(--muted); pointer-events: none; }
.pal-search { width: 100%; height: 40px; padding-left: 38px; border-radius: 999px; font-size: 13px; }
.pal-empty { font-size: 12.5px; margin: 6px 8px; }
.pal-sec { margin-bottom: 2px; }
.pal-sec-head {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 10px;
  border: 0;
  border-radius: 999px;
  background: none;
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
  text-align: left;
}
.pal-sec-head:hover { background: var(--surface-2); }
.pal-sec-head .chev { display: inline-block; width: 10px; font-size: 10px; color: var(--muted); transition: transform .15s; }
.pal-sec.open .chev { transform: rotate(90deg); }
.pal-sec-head .sec-name { flex: 1; }
.pal-sec-head .cnt { font-size: 11.5px; font-weight: 400; color: var(--muted); }
.pal-sec:not(.open) .pal-grid { display: none; }
.pal-sec .pal-grid { padding: 4px 0 10px; }
.pal-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }

.tool {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 10px 4px 8px;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--text);
  font-size: 11.5px;
  font-weight: 400;
  touch-action: none;
  user-select: none;
}
.tool:hover { background: var(--surface-2); }
.tool.active, .tool.active:hover { background: var(--sec); color: var(--on-sec); }
.tool svg { width: 26px; height: 26px; pointer-events: none; }
.tool span { pointer-events: none; text-align: center; line-height: 1.2; }
.tool:not([data-tool=select]) { cursor: grab; }
.tool.sticky::after {
  content: "";
  position: absolute;
  top: 6px;
  right: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
}
.ficon * { fill: none; stroke: currentColor; stroke-width: 1; vector-effect: non-scaling-stroke; }
.ficon .hit { stroke: none; }
.pal-note { margin: 12px 8px 0; font-size: 11.5px; line-height: 1.6; color: var(--muted); }

.drag-ghost {
  position: fixed;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 12px;
  background: var(--surface);
  color: var(--primary);
  font-size: 12px;
  box-shadow: var(--shadow-2);
  pointer-events: none;
  transform: translate(-50%, -50%);
}
.drag-ghost svg { width: 20px; height: 20px; }
body.pal-dragging, body.pal-dragging * { cursor: grabbing !important; }

/* ---------- Canvas ---------- */
.center {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  border-radius: 16px;
  background: var(--surface);
  border: 1px solid var(--outline-soft);
}
.stage { position: relative; flex: 1; min-width: 0; min-height: 0; overflow: hidden; }
#svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  user-select: none;
  cursor: crosshair;
}
#svg.tool-select { cursor: default; }
#svg.tool-ulmove { cursor: move; }
input[type=range] { height: auto; padding: 0; background: none; border: 0; accent-color: var(--primary); }
#svg.tool-select [data-id] { cursor: move; }
#svg .handle { cursor: grab; }
#svg.panning, #svg.panning * { cursor: grabbing; }

.pal-open {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  background: var(--surface);
  box-shadow: var(--shadow-1);
}
.typed {
  position: absolute;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--primary);
  color: var(--on-primary);
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
  pointer-events: none;
}

/* ---------- Sheet tabs ---------- */
.sheetbar {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 46px;
  padding: 0 8px;
  border-top: 1px solid var(--outline-soft);
}
.sheet-tabs { display: flex; gap: 4px; min-width: 0; overflow-x: auto; }
.sheet-tab {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 32px;
  padding: 0 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
}
.sheet-tab:hover { background: var(--surface-2); }
.sheet-tab.active { background: var(--sec); color: var(--on-sec); font-weight: 500; }
.tab-menu {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  color: inherit;
  font-size: 11px;
}
.tab-menu:hover { background: rgba(127, 127, 127, .18); }
.sheet-rename { width: 130px; height: 26px; padding: 0 8px; font-size: 13px; }

/* ---------- Menu ---------- */
.menu {
  position: fixed;
  z-index: 200;
  display: flex;
  flex-direction: column;
  min-width: 220px;
  padding: 6px;
  border-radius: 12px;
  background: var(--surface-2);
  box-shadow: var(--shadow-2);
}
.menu button {
  padding: 8px 12px;
  border: 0;
  border-radius: 8px;
  background: none;
  color: var(--text);
  font-size: 13.5px;
  font-weight: 400;
  text-align: left;
}
.menu button:hover:not(:disabled) { background: var(--surface-3); }
.menu .indent { padding-left: 24px; }
.menu .danger { color: var(--danger); }
.menu-label { padding: 8px 12px 2px; font-size: 11.5px; color: var(--muted); }
.menu hr { margin: 4px 0; border: 0; border-top: 1px solid var(--outline-soft); }

/* ---------- Side panel (right) ---------- */
.side {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
  overflow: auto;
}
.card { padding: 16px; border-radius: 16px; background: var(--surface); }
.side h2 { margin: 0 0 12px; font-size: 15px; font-weight: 500; }
.side h3 { margin: 16px 0 8px; font-size: 13px; font-weight: 500; color: var(--muted); }
.side h3:first-child { margin-top: 0; }

.field {
  display: grid;
  grid-template-columns: 110px 1fr;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.field > span:first-child { font-size: 13px; }
.field input { width: 100%; }
.field-wide { grid-template-columns: 1fr; gap: 4px; }
textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: var(--surface-2);
  color: inherit;
  font: inherit;
  font-size: 13.5px;
  resize: vertical;
}
textarea:hover { border-color: var(--outline); }
textarea:focus { outline: none; border-color: var(--primary); background: var(--surface); }
button.on { background: var(--sec); border-color: var(--sec); color: var(--on-sec); }
.field .ro { font-variant-numeric: tabular-nums; }
.btnrow { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.sendrow { display: flex; gap: 6px; }
.sendrow select { flex: 1; min-width: 0; }
.muted { color: var(--muted); }
.note { margin-top: 12px; font-size: 12px; line-height: 1.5; color: var(--muted); }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { font-weight: 500; color: var(--muted); }
td, th { padding: 6px 2px; border-bottom: 1px solid var(--outline-soft); text-align: left; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tfoot td { border-bottom: 0; font-weight: 500; }

details.help summary { display: flex; align-items: center; justify-content: space-between; list-style: none; cursor: pointer; }
details.help summary::-webkit-details-marker { display: none; }
details.help summary::after { content: "▸"; font-size: 11px; color: var(--muted); transition: transform .15s; }
details.help[open] summary::after { transform: rotate(90deg); }
details.help summary h2 { margin: 0; }
details.help[open] summary { margin-bottom: 12px; }
.help ul { margin: 0; padding-left: 18px; font-size: 12.5px; color: var(--muted); }
.help li { margin-bottom: 6px; }
kbd, code {
  padding: 1px 6px;
  border: 1px solid var(--outline-soft);
  border-radius: 6px;
  background: var(--surface-2);
  color: var(--text);
  font: 11px ui-monospace, Consolas, monospace;
}

/* ---------- Status bar ---------- */
.status {
  display: flex;
  gap: 24px;
  padding: 8px 20px;
  font-size: 12px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.status #hint.warn { color: var(--danger); }

/* ---------- Dialog (Material style) ---------- */
.dlg {
  width: min(560px, calc(100vw - 32px));
  padding: 24px;
  border: 0;
  border-radius: 28px;
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-2);
}
.dlg::backdrop { background: rgba(0, 0, 0, .4); }
.dlg h2 { margin: 0 0 16px; font-size: 22px; font-weight: 400; }
.dlg h3 { margin: 20px 0 10px; font-size: 14px; font-weight: 500; color: var(--muted); }
.dlg-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.dlg-grid label { display: flex; flex-direction: column; gap: 4px; font-size: 12.5px; color: var(--muted); }
.dlg-grid input, .dlg-grid select { width: 100%; height: 40px; color: var(--text); }
.dlg .note.warn { color: var(--danger); }
.dlg.wide { width: min(820px, calc(100vw - 32px)); }
.dlg-grid.four { grid-template-columns: repeat(4, 1fr); }
.bq-table { max-height: 46vh; overflow: auto; margin-top: 8px; border: 1px solid var(--outline-soft); border-radius: 12px; }
.bq-table table { font-size: 12.5px; }
.bq-table th { position: sticky; top: 0; background: var(--surface); }
.bq-table td, .bq-table th { padding: 6px 10px; }
.bq-table tr.tot td { font-weight: 600; }
@media (max-width: 640px) { .dlg-grid.four { grid-template-columns: 1fr 1fr; } }
.dlg-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 20px; }
.dlg-actions button { border-color: transparent; }
button.filled { background: var(--primary); border-color: var(--primary); color: var(--on-primary); }
button.filled:hover { background: var(--primary); filter: brightness(1.08); }

/* ---------- Print: only the generated pages, always light ---------- */
#printRoot { display: none; }
@media print {
  :root {
    --cv-paper: #fff; --cv-grid: #eef0f3; --cv-grid-major: #d8dce2; --cv-room: #f5f1e8; --cv-room-line: #cfc7b6;
    --cv-ink: #2b2b2b; --cv-furn: #555; --cv-label: #333; --cv-label-muted: #666; --cv-dim: #c0392b;
    --cv-accent: #0b57d0; --cv-accent-soft: rgba(11, 87, 208, .08);
  }
  html, body { display: block; height: auto; background: #fff; }
  body > *:not(#printRoot) { display: none !important; }
  #printRoot { display: block; }
  .print-page { width: var(--pw); height: var(--ph); overflow: hidden; break-after: page; page-break-after: always; }
  .print-page:last-child { break-after: auto; page-break-after: auto; }
  .print-page svg { display: block; }
}

/* ---------- Small screens ---------- */
@media (max-width: 860px) {
  main { grid-template-columns: auto 1fr; grid-template-rows: 1fr auto; padding: 0 8px; gap: 8px; }
  main.pal-collapsed { grid-template-columns: 1fr; }
  .palette { width: 150px; }
  .side { grid-column: 1 / -1; max-height: 42vh; }
  .center { min-height: 55vh; }
  .brand span { display: none; }
}