:root {
  color-scheme: dark;
  --bg: #1c1e20;
  --surface: #232527;
  --control: #2c2f31;
  --hover: #363a3c;
  --border: #3c4042;
  --divider: #323638;
  --text: #eceeed;
  --muted: #a1a8a7;
  --accent: #b7cebf;
  --warn: #efb96e;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 13px;
}
* { box-sizing: border-box; }
body { margin: 0; height: 100dvh; display: block; background: var(--bg); color: var(--text); }
button, input, select, summary, a { font: inherit; }
button, summary, a { touch-action: manipulation; }
button, select {
  height: 36px; padding: 0 12px; border: 1px solid var(--border); border-radius: 5px;
  background: var(--control); color: var(--text); cursor: pointer;
}
button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-weight: 500; }
button:hover, .downloads a:hover, .bundle:hover { background: var(--hover); border-color: #555b5e; }
button:active { background: #414648; }
button:disabled { opacity: .4; cursor: default; }
:where(button, summary, a, input, select, canvas):focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
svg.icon { width: 16px; height: 16px; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
select {
  appearance: none; padding-right: 32px; width: 100%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%23a1a8a7' stroke-width='1.5'%3E%3Cpath d='m5 6 3 3 3-3'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 9px center;
}
select:hover { border-color: #646c6b; }
aside { width: 272px; flex-shrink: 0; display: flex; flex-direction: column; border-right: 1px solid var(--divider); background: var(--surface); }
.sidebar-header { min-height: 64px; display: flex; align-items: center; gap: 10px; padding: 0 20px; border-bottom: 1px solid var(--divider); }
h1 { margin: 0; font-size: 14px; font-weight: 600; letter-spacing: -.2px; }
.sidebar-body { flex: 1; overflow: auto; scrollbar-width: thin; scrollbar-color: var(--border) transparent; padding: 20px; }
.sidebar-footer { display: flex; flex-direction: column; gap: 8px; margin-top: auto; padding: 16px 20px; border-top: 1px solid var(--divider); }
#openPrint, .screen-link { width: 100%; }
.screen-link { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 36px; padding: 0 12px; border: 1px solid var(--border); border-radius: 5px; background: var(--control); color: var(--text); font-weight: 500; }
.screen-link:hover { background: var(--hover); border-color: #555b5e; }
.playback { display: grid; grid-template-columns: 1fr 36px; gap: 12px 8px; align-items: center; margin-bottom: 24px; }
#mode { grid-column: 1; grid-row: 1; }
#play { grid-column: 2; grid-row: 1; padding: 0; background: var(--accent); color: #1d2a23; border-color: transparent; }
#play:hover { background: #d0e1d5; }
#play .pause-icon, #play[aria-pressed=true] .play-icon { display: none; }
#play[aria-pressed=true] .pause-icon { display: block; }
#timeline { grid-column: 1 / -1; grid-row: 2; }
input[type=range] { appearance: none; background: transparent; height: 28px; width: 100%; min-width: 0; margin: 0; cursor: pointer; }
input[type=range]::-webkit-slider-runnable-track { height: 3px; background: #505755; border-radius: 2px; }
input[type=range]::-webkit-slider-thumb { appearance: none; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); margin-top: -4.5px; }
input[type=range]::-moz-range-track { height: 3px; background: #505755; border-radius: 2px; }
input[type=range]::-moz-range-thumb { width: 12px; height: 12px; border: 0; border-radius: 50%; background: var(--accent); }
input[type=checkbox] { appearance: none; width: 16px; height: 16px; flex-shrink: 0; margin: 0; border: 1px solid #6b7471; border-radius: 3px; background: transparent; cursor: pointer; }
input[type=checkbox]:checked { border-color: var(--accent); background: var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='none' stroke='%231d2a23' stroke-width='1.8'%3E%3Cpath d='m3 7 2.5 2.5L11 4'/%3E%3C/svg%3E") center no-repeat; }
.menu { border-top: 1px solid var(--divider); }
.animation-menu { border: 0; }
.animation-menu > summary { display: none; }
summary { display: flex; align-items: center; gap: 10px; min-height: 48px; cursor: pointer; list-style: none; user-select: none; font-weight: 500; }
summary::-webkit-details-marker { display: none; }
summary::after { content: ''; width: 6px; height: 6px; border-right: 1.5px solid var(--muted); border-bottom: 1.5px solid var(--muted); transform: rotate(-45deg); margin-left: auto; margin-right: 4px; }
details[open] > summary::after { transform: rotate(45deg); }
summary:hover { color: var(--accent); }
summary > .icon { color: var(--muted); }
.panel { padding: 0 0 16px; }
.panel label { display: flex; align-items: center; gap: 10px; min-height: 34px; cursor: pointer; color: #c9cecb; }
.panel label:hover { color: var(--text); }
.panel hr { border: 0; border-top: 1px solid var(--divider); margin: 8px 0; }
main { flex: 1; position: relative; min-width: 0; min-height: 0; }
.canvas-wrap { position: absolute; inset: 0; overflow: hidden; }
canvas.scene { display: block; width: 100%; height: 100%; touch-action: none; }
.part-tip { position: absolute; z-index: 4; max-width: 260px; padding: 7px 10px; border: 1px solid var(--border); border-radius: 5px; background: var(--surface); color: var(--text); font-size: 12px; pointer-events: none; }
.part-tip[hidden] { display: none; }
dialog { width: min(520px,calc(100% - 32px)); max-height: 85dvh; padding: 24px; border: 1px solid var(--border); border-radius: 8px; color: var(--text); background: var(--surface); }
dialog::backdrop { background: #0009; }
.dialog-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.dialog-header h2 { margin: 0; font-size: 16px; font-weight: 600; }
.dialog-header button { width: 32px; height: 32px; padding: 0; border-color: transparent; background: transparent; }
h3 { font-size: 12px; font-weight: 500; color: var(--muted); margin: 0 0 10px; }
a { color: var(--accent); text-decoration: none; }
.downloads { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.downloads a, .bundle { display: flex; align-items: center; justify-content: center; min-height: 40px; padding: 8px 12px; border: 1px solid var(--border); border-radius: 5px; color: var(--text); background: var(--control); }
.bundle { margin-top: 8px; gap: 8px; }
.print-info { margin-top: 24px; }
.material-total { margin: 0 0 16px; color: var(--muted); font-size: 12px; }
.print-info details { border-top: 1px solid var(--divider); }
.print-info details[open] { padding-bottom: 16px; }
.print-info table, .print-info tbody { display: block; font-size: 12px; line-height: 1.5; }
.print-info tr { display: block; padding: 8px 0; border-bottom: 1px solid var(--divider); }
.print-info th, .print-info td { display: block; padding: 0; text-align: left; }
.print-info th { font-weight: 400; color: var(--muted); }
.print-info tr:last-child { border: 0; }
.print-info small { display: block; font-size: 12px; color: var(--muted); line-height: 1.6; margin-top: 12px; }
.print-info ul { padding-left: 18px; font-size: 12px; line-height: 1.6; margin: 12px 0; }
.print-info li + li { margin-top: 8px; }
@media(max-width:600px) {
  aside { width: 100%; flex-shrink: 0; display: grid; grid-template-columns: 1fr auto; border-right: 0; border-bottom: 1px solid var(--divider); }
  .sidebar-header { min-height: 56px; padding: 0 16px; border: 0; }
  .sidebar-footer { grid-column: 2; grid-row: 1; flex-direction: row; margin-top: 0; padding: 10px 16px 10px 0; border: 0; }
  .sidebar-footer button, .screen-link { font-size: 12px; white-space: nowrap; }
  .sidebar-footer .screen-link { width: auto; }
  .sidebar-body { grid-column: 1 / -1; padding: 0 16px; overflow: visible; }
  .animation-menu { border-top: 1px solid var(--divider); }
  .animation-menu > summary { display: flex; }
  #partControls, #measurementControls { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 12px; }
  .playback { grid-template-columns: 36px minmax(92px,1fr) minmax(40px,1fr); gap: 8px; margin: 0 0 12px; }
  #play { grid-column: 1; grid-row: 1; }
  #mode { grid-column: 2; grid-row: 1; padding-left: 8px; padding-right: 24px; background-position: right 4px center; }
  #timeline { grid-column: 3; grid-row: 1; }
  summary { min-height: 44px; }
  main { min-height: 0; }
  #printScreen aside { max-height: 45dvh; grid-template-rows: auto minmax(0, 1fr); }
  #printControls { overflow: auto; }
}
@media(max-width:400px) {
  .sidebar-footer button, .screen-link { font-size: 0; gap: 0; padding: 0 10px; }
}
[hidden] { display: none !important; }
.workspace { display: flex; height: 100dvh; }
.back-link { display: flex; align-items: center; justify-content: center; width: 28px; height: 32px; margin-left: -6px; flex-shrink: 0; color: var(--muted); border-radius: 4px; }
.back-link:hover { color: var(--text); background: var(--hover); }
.sidebar-header h1 { font-size: 13px; }
.gallery { max-width: 1080px; padding: 0 32px 40px; margin: auto; }
.gallery-header { height: 80px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--divider); }
.gallery-header h1 { font-size: 18px; }
.gallery-header a { font-size: 12px; color: var(--muted); }
.gallery-tools { padding: 24px 0; display: flex; justify-content: flex-end; }
input[type=search] { width: 240px; height: 36px; border: 1px solid var(--border); border-radius: 5px; padding: 0 12px; background: var(--surface); color: var(--text); }
.cards { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px; }
.card { overflow: hidden; border: 1px solid var(--divider); border-radius: 6px; background: var(--surface); }
.card:hover { border-color: #69756d; }
.card > a { display: block; color: var(--text); }
.card img { width: 100%; height: auto; aspect-ratio: 4/3; object-fit: cover; display: block; background: var(--bg); }
.card-content { padding: 20px; border-top: 1px solid var(--divider); }
.card h2 { font-size: 15px; font-weight: 500; margin: 0 0 10px; }
.card-meta { display: flex; justify-content: space-between; gap: 12px; color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.empty { padding: 48px 0; text-align: center; color: var(--muted); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
@media(max-width:600px) {
  .workspace { flex-direction: column; }
  .gallery { padding: 0 16px 24px; }
  .gallery-header { height: 64px; }
  .gallery-tools { padding: 16px 0; }
  .gallery-tools label, input[type=search] { width: 100%; }
  .cards { grid-template-columns: 1fr; gap: 16px; }
}
.print-playback { display: grid; grid-template-columns: 36px 1fr; gap: 8px; align-items: center; margin: 8px 0; }
#printPlay { padding: 0; background: var(--accent); color: #1d2a23; border-color: transparent; }
#printPlay .pause-icon, #printPlay[aria-pressed=true] .play-icon { display: none; }
#printPlay[aria-pressed=true] .pause-icon { display: block; }
.print-layer { margin: 4px 0 8px; color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }
.swatch { width: 12px; height: 12px; border-radius: 2px; flex: none; }

canvas.scene { transition: opacity .35s; }
.canvas-wrap[aria-busy=true] canvas.scene { opacity: 0; }
#sidebarBody { transition: opacity .2s; }
#sidebarBody[inert] { opacity: .45; }

.status { display: flex; align-items: center; justify-content: center; color: var(--muted); text-align: center; }
.status-overlay { position: absolute; inset: 0; padding: 24px; pointer-events: none; }
.status-page { position: fixed; inset: 0; z-index: 10; padding: 24px; background: var(--bg); }
.status-box { display: flex; flex-direction: column; align-items: center; gap: 12px; max-width: 380px; }
.status[data-kind=error] .status-box, .status[data-kind=info] .status-box { padding: 24px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); pointer-events: auto; }
.status[data-kind=loading] { animation: fade-in .2s .15s both; }
.status-text { margin: 0; line-height: 1.5; }
.status:not([data-kind=loading]) .status-text { color: var(--text); }
.status-icon svg { width: 28px; height: 28px; }
.status[data-kind=error] .status-icon { color: var(--warn); }
.status[data-kind=info] .status-icon { color: var(--accent); }
.status-detail { max-width: 100%; padding: 6px 10px; border-radius: 4px; background: var(--control); color: var(--muted); font: 12px ui-monospace, SFMono-Regular, Menlo, monospace; overflow-wrap: anywhere; user-select: all; }
.status-actions { display: flex; gap: 8px; margin-top: 4px; }
.status-actions .screen-link { width: auto; }
.status-spinner { width: 28px; height: 28px; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite; }
.status-bar { width: 180px; height: 3px; overflow: hidden; border-radius: 2px; background: var(--border); }
.status-bar i { display: block; width: 100%; height: 100%; background: var(--accent); transform-origin: left; transition: transform .2s; }
.status-bar[data-indeterminate] i { width: 40%; animation: slide 1.2s ease-in-out infinite; }
.status-percent { min-height: 1.2em; font-size: 12px; font-variant-numeric: tabular-nums; }

.skeleton-image, .skeleton-line, .card img:not(.settled) { background: linear-gradient(100deg, var(--bg) 35%, var(--control) 50%, var(--bg) 65%) 100% 0 / 300% 100%; animation: shimmer 1.4s linear infinite; }
.card img:not(.settled) { color: transparent; }
.card img.settled { animation: fade-in .3s; }
.skeleton-image { aspect-ratio: 4/3; }
.skeleton-line { width: 60%; height: 12px; margin-bottom: 10px; border-radius: 4px; }
.skeleton-line.short { width: 35%; margin-bottom: 0; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes slide { from { transform: translateX(-100%); } to { transform: translateX(250%); } }
@keyframes shimmer { to { background-position: 0 0; } }
@keyframes fade-in { from { opacity: 0; } }
@media (prefers-reduced-motion: reduce) {
  canvas.scene, #sidebarBody, .status-bar i { transition: none; }
  .status-bar[data-indeterminate] i { width: 100%; opacity: .5; }
  .status-spinner, .status-bar[data-indeterminate] i, .skeleton-image, .skeleton-line, .card img { animation: none !important; }
}