:root {
  --bg: #f4f1ec;
  --panel: #ffffff;
  --panel-2: #faf8f5;
  --text: #22201c;
  --muted: #6b665e;
  --line: #e2ddd4;
  --line-strong: #cfc8bc;
  --accent: #c8643c;
  --accent-ink: #ffffff;
  --accent-soft: #f8e7de;
  --wood: #5b3a24;
  --warn-bg: #fff4d6;
  --warn-ink: #7a5500;
  --err-bg: #fde6e4;
  --err-ink: #9b2019;
  --ok: #2e7d4f;
  --canvas-fill: #efe6d6;
  --far: #1f5fcf;
  --near: #c9541f;
  --blade: #c8352c;
  --good-fill: #c99c6e;
  --tape: #f0dc8a;
  --cheap-fill: #f2dcae;
  --fence-fill: #d9d2c6;
  --viewer-bg: radial-gradient(ellipse at 50% 40%, #fbfaf7 0%, #e7e2da 100%);
  --radius: 10px;
  --shadow: 0 1px 2px rgba(40, 30, 20, .06), 0 2px 8px rgba(40, 30, 20, .05);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #181614;
    --panel: #22201d;
    --panel-2: #2a2724;
    --text: #ece8e2;
    --muted: #a39d93;
    --line: #36322d;
    --line-strong: #48433d;
    --accent: #e07a50;
    --accent-soft: #3a2a22;
    --wood: #a0724d;
    --warn-bg: #3a3017;
    --warn-ink: #f0cf7a;
    --err-bg: #3d1f1c;
    --err-ink: #ff9d92;
    --ok: #6fcf97;
    --canvas-fill: #3a342c;
    --far: #8db4ff;
    --near: #ffa577;
    --blade: #ff7b70;
    --good-fill: #8a6040;
    --tape: #c9ae4e;
    --cheap-fill: #6e5b3b;
    --fence-fill: #4a453e;
    --viewer-bg: radial-gradient(ellipse at 50% 40%, #34302b 0%, #1c1a18 100%);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}
h2 { font-size: 13px; text-transform: uppercase; letter-spacing: .06em; margin: 0 0 10px; color: var(--muted); display: flex; align-items: baseline; gap: 6px; }
h3 { font-size: 15px; margin: 22px 0 8px; }
.unit { font-size: 11px; text-transform: none; letter-spacing: 0; color: var(--muted); font-weight: normal; }

button, .button {
  font: inherit;
  border: 1px solid var(--line-strong);
  background: var(--panel);
  color: var(--text);
  padding: 6px 12px;
  border-radius: 7px;
  cursor: pointer;
  white-space: nowrap;
}
button:hover, .button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
button.primary:hover { filter: brightness(1.05); }
button.link { border: none; background: none; color: var(--accent); padding: 4px 2px; }
button.link:hover { text-decoration: underline; }
button:disabled, button:disabled:hover { opacity: .45; cursor: default; text-decoration: none; border-color: var(--line-strong); filter: none; }
button.link:disabled { border-color: transparent; }
button.danger { color: var(--err-ink); }

input, select {
  font: inherit;
  width: 100%;
  padding: 6px 8px;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  background: var(--panel);
  color: var(--text);
  min-width: 0;
}
input:focus, select:focus { outline: 2px solid color-mix(in srgb, var(--accent) 45%, transparent); outline-offset: 0; border-color: var(--accent); }
input:disabled { opacity: .6; }
input[type="checkbox"] { width: auto; accent-color: var(--accent); }
input.invalid { border-color: var(--err-ink); }

/* ---------- Top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 16px;
  padding: 10px 18px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 16px; }
.brand svg { width: 26px; height: 26px; }
.quickload { flex: 1; display: flex; gap: 8px; min-width: 260px; max-width: 620px; }
.actions { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.save-status { color: var(--muted); font-size: 12.5px; }
.save-status.dirty { color: var(--accent); }
.save-status.saved { color: var(--ok); }

/* ---------- Layout ---------- */
.layout {
  display: grid;
  grid-template-columns: minmax(320px, 400px) 1fr;
  gap: 16px;
  padding: 16px 18px 24px;
  align-items: start;
}
.sidebar { display: flex; flex-direction: column; gap: 12px; }
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
}
.field { display: flex; flex-direction: column; gap: 3px; margin-bottom: 9px; }
.field label { font-size: 12.5px; color: var(--muted); }
.check { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--muted); cursor: pointer; margin-top: 2px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.help { font-size: 12px; color: var(--muted); margin: 0 0 8px; }
.help.center { text-align: center; margin-top: 6px; }
.hint {
  font-size: 12.5px; background: var(--accent-soft); border-radius: 7px; padding: 7px 10px;
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
}
.measure-wrap { display: grid; grid-template-columns: 110px 1fr; gap: 12px; align-items: center; }
.measure-diagram { width: 100%; color: var(--muted); font-size: 10px; }
.measure-diagram text { fill: var(--muted); }
details.more { margin-top: 2px; }
details.more summary { cursor: pointer; font-size: 12.5px; color: var(--accent); margin-bottom: 8px; }
.button-row { display: flex; gap: 10px; align-items: center; margin-top: 4px; }

.image-row { display: flex; gap: 12px; align-items: flex-start; }
.thumb {
  width: 110px; height: 82px; flex: none;
  border-radius: 6px; border: 1px solid var(--line);
  background: var(--panel-2) center / cover no-repeat;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; color: var(--muted);
}
.thumb.has-image span { display: none; }
.image-actions { display: flex; flex-direction: column; align-items: flex-start; gap: 4px; }
.file-button { position: relative; overflow: hidden; display: inline-block; }
.file-button input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }

/* ---------- Main / tabs ---------- */
.main { min-width: 0; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 14px; }
.tabs button {
  border: none; background: none; border-radius: 0; padding: 9px 14px;
  color: var(--muted); font-weight: 600; border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tabs button.active { color: var(--text); border-bottom-color: var(--accent); }
.panel { min-width: 0; }

.toolbar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 10px; }
.toolbar .spacer { flex: 1; }
.seg { display: inline-flex; border: 1px solid var(--line-strong); border-radius: 7px; overflow: hidden; }
.seg button { border: none; border-radius: 0; border-right: 1px solid var(--line-strong); padding: 5px 11px; }
.seg button:last-child { border-right: none; }
.seg button.active { background: var(--accent-soft); color: var(--accent); }

/* ---------- Cut list ---------- */
.empty {
  background: var(--panel); border: 1px dashed var(--line-strong); border-radius: var(--radius);
  padding: 40px 24px; text-align: center; color: var(--muted);
}
.alerts { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.alert { border-radius: 8px; padding: 8px 12px; font-size: 13px; }
.alert.warn { background: var(--warn-bg); color: var(--warn-ink); }
.alert.err { background: var(--err-bg); color: var(--err-ink); }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 10px; }
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; box-shadow: var(--shadow); }
.stat .k { font-size: 11.5px; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.stat .v { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; margin-top: 2px; }
.stat .s { font-size: 12px; color: var(--muted); }

.table-wrap { overflow-x: auto; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.table th, .table td { padding: 8px 12px; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
.table th { font-size: 11.5px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); font-weight: 600; background: var(--panel-2); }
.table tr:last-child td { border-bottom: none; }
.table td.num, .table th.num { text-align: right; }
.table .big { font-weight: 700; font-size: 15px; }
.table .sub { color: var(--muted); font-size: 12px; }
.table tbody tr.clickable { cursor: pointer; }
.table tbody tr.clickable:hover { background: var(--panel-2); }
.group-head th { border-bottom: none; padding-bottom: 0; text-align: center !important; }
.group-head th[colspan] { border-bottom: 2px solid var(--line-strong); padding-bottom: 4px; }
.tag { display: inline-block; padding: 1px 7px; border-radius: 99px; font-size: 11.5px; font-weight: 600; }
.tag.far { background: #e1ecff; color: #1b4fa8; }
.tag.near { background: #ffe6d6; color: #a2461b; }
.tag.none { background: var(--panel-2); color: var(--muted); }
@media (prefers-color-scheme: dark) {
  .tag.far { background: #1f2f4d; color: #9fc0ff; }
  .tag.near { background: #45291a; color: #ffb58c; }
}
.angle { color: #b3261e; font-weight: 700; }
@media (prefers-color-scheme: dark) { .angle { color: #ff8a80; } }

.guide { display: grid; grid-template-columns: minmax(260px, 440px) 1fr; gap: 18px; align-items: center; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; box-shadow: var(--shadow); }
.guide svg { width: 100%; height: auto; color: var(--text); }
.guide svg text { font-size: 10.5px; }
.guide-label { font-size: 12.5px; color: var(--muted); margin-bottom: 4px; }
.guide-toggle { margin-bottom: 10px; flex-wrap: wrap; }
.guide .g-over { opacity: .8; stroke-dasharray: 4 2; }
.guide .g-sled { fill: var(--panel-2); stroke: var(--line-strong); }
.guide .g-kerf { stroke: var(--muted); stroke-width: 1; stroke-dasharray: 4 3; }
.guide .g-fence { fill: var(--fence-fill); stroke: var(--text); stroke-width: 1; }
.guide .g-good { fill: var(--good-fill); stroke: var(--text); stroke-width: .8; }
.guide .g-cheap { fill: var(--cheap-fill); stroke: var(--text); stroke-width: .8; }
.guide .g-offcut { fill: none; stroke: var(--muted); stroke-width: .8; stroke-dasharray: 3 2; }
.guide .g-band-t, .guide .g-fence-t { fill: var(--text); font-size: 9px; }
.guide .g-ink { fill: var(--text); }
.guide .g-muted { fill: var(--muted); font-size: 9.5px; }
.guide .g-tip { fill: var(--text); }
.guide .g-blade { fill: var(--blade); }
.guide .g-blade-t { fill: var(--blade); }
.guide .g-near { fill: var(--near); }
.guide .g-far { fill: var(--far); }
.guide .g-near-t { fill: var(--near); font-weight: 700; }
.guide .g-far-t { fill: var(--far); font-weight: 700; }
.guide .g-off { fill: none; stroke: var(--muted); stroke-width: 1.2; stroke-dasharray: 2 2; }
.guide .g-off-t { fill: var(--muted); }
.guide .g-count { font-weight: 800; font-size: 13px; }
.guide .g-tape { fill: var(--tape); stroke: var(--text); stroke-width: .6; }
.guide .g-tape-line { stroke: var(--text); stroke-width: .4; opacity: .7; }
.guide .g-title { fill: var(--text); font-weight: 700; font-size: 13px; }
.guide-pick { font-size: 13px; color: var(--muted); margin: 0 0 10px; }
.guide-pick.active { color: var(--text); background: var(--accent-soft); border-radius: 8px; padding: 8px 12px; }
.table tbody tr.selected td { background: var(--accent-soft); }
.table tbody tr.selected td:first-child { box-shadow: inset 3px 0 0 var(--accent); }
.guide .g-arrow { stroke: var(--muted); stroke-width: 1.5; }
.guide .g-arrowhead { fill: var(--muted); }
.guide ul { margin: 6px 0 0; padding-left: 18px; }
.guide li { margin-bottom: 4px; }
.note { font-size: 12.5px; color: var(--muted); margin-top: 8px; }

/* ---------- 3D ---------- */
.viewer {
  position: relative;
  height: min(72vh, 760px);
  min-height: 380px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--viewer-bg);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.viewer canvas { display: block; }
.label-layer { position: absolute; top: 0; left: 0; pointer-events: none; }
.viewer-msg { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: var(--muted); padding: 20px; text-align: center; z-index: 2; }
.label3d {
  font: 600 11.5px/1.2 system-ui, sans-serif;
  padding: 2px 6px; border-radius: 5px; white-space: nowrap;
  background: rgba(255, 255, 255, .88); color: #1b4fa8; border: 1px solid rgba(27, 79, 168, .35);
  font-variant-numeric: tabular-nums;
}
.label3d.angle { color: #b3261e; border-color: rgba(179, 38, 30, .35); }
.label3d.paint { background: rgba(0, 0, 0, .55); color: #fff; border-color: transparent; }
.label3d.small { font-size: 10.5px; }

/* ---------- Drawing ---------- */
.drawing-host { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: auto; box-shadow: var(--shadow); }
.drawing-host svg { display: block; width: 100%; height: auto; min-width: 760px; }

/* ---------- Dialog ---------- */
.dialog {
  width: min(920px, 94vw); max-height: 86vh;
  border: 1px solid var(--line); border-radius: 14px; padding: 18px;
  background: var(--panel); color: var(--text);
  box-shadow: 0 20px 60px rgba(0, 0, 0, .25);
}
.dialog::backdrop { background: rgba(20, 15, 10, .45); }
.dialog-head { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; }
.dialog-head h2 { margin: 0; font-size: 16px; color: var(--text); text-transform: none; letter-spacing: 0; }
.dialog-head .link { margin-left: auto; }
#libSearch { margin-bottom: 10px; }
.dialog .table-wrap { max-height: 60vh; overflow: auto; box-shadow: none; }
.inline-form { display: flex; gap: 8px; margin-bottom: 10px; }

.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: #22201c; color: #fff; padding: 9px 16px; border-radius: 8px; z-index: 50;
  box-shadow: 0 6px 20px rgba(0, 0, 0, .25); font-size: 13.5px;
}
.toast.err { background: #9b2019; }

/* ---------- Accounts (hosted version) ---------- */
.user-menu { display: flex; align-items: center; gap: 6px; margin-left: 8px; padding-left: 12px; border-left: 1px solid var(--line); }
.user-name { font-weight: 600; font-size: 13px; }
.dialog-small { width: min(420px, 94vw); }
.auth-screen {
  position: fixed; inset: 0; z-index: 100;
  display: flex; align-items: center; justify-content: center; padding: 16px;
  background: var(--bg);
}
.auth-card {
  width: min(380px, 100%);
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 24px; box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 4px;
}
.auth-card .brand { margin-bottom: 14px; }
.auth-tabs { margin-bottom: 12px; align-self: flex-start; }
.auth-card .primary { margin-top: 6px; padding: 9px 12px; }
.auth-card .alert { margin: 4px 0; }
.auth-card .help { margin-top: 8px; text-align: center; }

[hidden] { display: none !important; }

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .guide { grid-template-columns: 1fr; }
}

@media print {
  .topbar, .sidebar, .tabs, .toolbar, .help.center { display: none !important; }
  .layout { display: block; padding: 0; }
  body { background: #fff; color: #000; }
  .stat, .table-wrap, .guide { box-shadow: none; }
}