:root {
  color-scheme: dark;
  --bg: #070a09;
  --panel: #0d1210;
  --panel-2: #111814;
  --line: #26342c;
  --line-strong: #34483b;
  --text: #f2f7f4;
  --muted: #8fa097;
  --green: #6dff9b;
  --green-2: #28d967;
  --green-dim: rgba(109,255,155,.12);
  --danger: #ff7f7f;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: radial-gradient(circle at 50% -20%, #142018 0, #090d0b 36%, var(--bg) 70%); color: var(--text); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
button, textarea, input { font: inherit; }
button { -webkit-tap-highlight-color: transparent; }
.app-shell { width: min(1680px, 100%); margin: 0 auto; padding: 0 18px 18px; }
.topbar { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-bottom: 1px solid var(--line); }
.brand-wrap { display: flex; align-items: center; gap: 13px; }
.brand-mark { width: 38px; height: 38px; display: grid; gap: 4px; grid-template-columns: repeat(3,1fr); transform: skewY(-8deg); }
.brand-mark span { border: 1px solid var(--green); background: linear-gradient(180deg, rgba(109,255,155,.28), rgba(109,255,155,.02)); }
.brand { font-weight: 950; letter-spacing: .14em; font-size: 18px; }
.tagline { color: var(--muted); letter-spacing: .18em; font-size: 9px; margin-top: 3px; }
.status-pill { font-size: 10px; letter-spacing: .13em; color: #b8c7bf; display: flex; align-items: center; gap: 8px; border: 1px solid var(--line); padding: 9px 12px; border-radius: 999px; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 12px var(--green); }
.workspace { display: grid; grid-template-columns: minmax(280px, 360px) minmax(420px, 1fr) minmax(250px, 310px); gap: 14px; padding: 14px 0; align-items: stretch; }
.panel { background: linear-gradient(180deg, rgba(17,24,20,.95), rgba(10,15,12,.98)); border: 1px solid var(--line); border-radius: 16px; min-width: 0; }
.left-panel, .right-panel { padding: 18px; }
.viewer-panel { padding: 14px; display: flex; flex-direction: column; min-height: 700px; }
.section-kicker { font-size: 10px; letter-spacing: .18em; color: var(--green); font-weight: 800; }
textarea { width: 100%; min-height: 124px; resize: vertical; margin-top: 10px; background: #080d0a; color: var(--text); border: 1px solid var(--line-strong); border-radius: 11px; padding: 13px; outline: none; font-size: 15px; line-height: 1.45; }
textarea:focus, input:focus { border-color: var(--green); box-shadow: 0 0 0 3px var(--green-dim); }
.prompt-actions { display: grid; grid-template-columns: 1fr auto; gap: 8px; margin-top: 9px; }
.primary-btn, .secondary-btn, .ghost-btn { min-height: 44px; border-radius: 9px; border: 1px solid var(--line-strong); cursor: pointer; font-weight: 900; letter-spacing: .08em; font-size: 11px; }
.primary-btn { color: #061109; background: linear-gradient(180deg, #8cffad, var(--green-2)); border-color: #78ff9e; }
.primary-btn:hover { filter: brightness(1.04); }
.secondary-btn { width: 100%; color: var(--text); background: var(--green-dim); border-color: rgba(109,255,155,.32); }
.ghost-btn { background: transparent; color: var(--muted); padding: 0 13px; }
.divider { height: 1px; background: var(--line); margin: 18px 0; }
.section-heading-row { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; }
h2 { margin: 5px 0 0; font-size: 18px; }
.small-badge { font-size: 10px; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 5px 8px; }
.parameter-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; margin: 13px 0; }
.field { display: none; min-width: 0; }
.field.active { display: block; }
.field > span { display: block; color: var(--muted); font-size: 10px; margin: 0 0 5px 2px; }
.field > div { display: flex; align-items: center; background: #080d0a; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.field input { width: 100%; min-width: 0; border: 0; outline: 0; color: var(--text); background: transparent; padding: 9px 10px; font-size: 13px; }
.field em { font-style: normal; color: #76877d; font-size: 10px; padding-right: 9px; }
.checks { display: grid; gap: 7px; margin-top: 10px; }
.check-row { display: grid; grid-template-columns: 22px 1fr auto; gap: 8px; align-items: center; padding: 9px 10px; background: #090e0b; border: 1px solid var(--line); border-radius: 9px; font-size: 11px; }
.check-row strong { font-size: 9px; letter-spacing: .08em; color: #c7d5cd; }
.check-icon { width: 20px; height: 20px; display: grid; place-items: center; border-radius: 50%; font-size: 11px; }
.check-icon.pass { color: #07100a; background: var(--green); }
.viewer-topline { display: flex; justify-content: space-between; gap: 12px; align-items: center; padding: 4px 4px 12px; }
.model-title { font-size: 20px; font-weight: 900; margin-top: 4px; }
.viewer-actions { display: flex; gap: 7px; }
.icon-btn { width: 42px; height: 42px; color: var(--text); background: #0b100d; border: 1px solid var(--line); border-radius: 9px; cursor: pointer; font-size: 18px; }
.viewer { position: relative; min-height: 570px; flex: 1; overflow: hidden; border-radius: 12px; background: radial-gradient(circle at 50% 42%, #1a2820 0, #0c120f 48%, #070a08 100%); border: 1px solid var(--line); }
.viewer::before { content: ""; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(rgba(109,255,155,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(109,255,155,.035) 1px, transparent 1px); background-size: 32px 32px; mask-image: linear-gradient(to bottom, transparent 0, #000 25%, #000 100%); }
.viewer canvas { width: 100%; height: 100%; display: block; position: relative; z-index: 2; }
.viewer-loading { position: absolute; inset: 0; z-index: 3; display: grid; place-items: center; color: var(--muted); font-size: 11px; letter-spacing: .16em; }
.viewer-footer { display: flex; flex-wrap: wrap; justify-content: center; gap: 18px; padding: 10px 4px 2px; color: #65746c; font-size: 9px; letter-spacing: .11em; }
.metric-card { margin-top: 10px; padding: 14px; background: #090e0b; border: 1px solid var(--line); border-radius: 11px; }
.metric-card span, .metric-split span { display: block; color: var(--muted); font-size: 10px; }
.metric-card strong { display: block; margin-top: 6px; font-size: 16px; }
.metric-split { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); border-radius: 11px; overflow: hidden; margin-top: 8px; }
.metric-split > div { min-width: 0; padding: 12px; background: #090e0b; }
.metric-split > div + div { border-left: 1px solid var(--line); }
.metric-split strong { display: block; margin-top: 6px; font-size: 13px; word-break: break-word; }
.fine-print { font-size: 9px; color: #65746c; line-height: 1.45; margin-top: 8px; }
.export-btn { width: 100%; min-height: 58px; display: flex; align-items: center; justify-content: space-between; gap: 12px; text-align: left; padding: 10px 12px; color: var(--text); background: #090e0b; border: 1px solid var(--line); border-radius: 10px; cursor: pointer; margin-top: 8px; }
.export-btn:hover { border-color: var(--line-strong); }
.export-btn.recommended { border-color: rgba(109,255,155,.38); background: linear-gradient(90deg, rgba(109,255,155,.1), #090e0b); }
.export-btn span { display: flex; flex-direction: column; gap: 2px; }
.export-btn b { font-size: 13px; }
.export-btn small { color: var(--muted); font-size: 9px; }
.export-btn > strong { color: var(--green); font-size: 9px; letter-spacing: .08em; }
.export-note { margin-top: 12px; padding: 11px; border: 1px dashed var(--line-strong); border-radius: 9px; color: #829187; font-size: 10px; line-height: 1.45; }
.examples-strip { display: flex; gap: 8px; align-items: center; overflow-x: auto; padding: 2px 0 14px; scrollbar-width: thin; }
.examples-label { flex: 0 0 auto; color: var(--muted); font-size: 9px; letter-spacing: .13em; padding-right: 4px; }
.example-chip { flex: 0 0 auto; min-height: 36px; border-radius: 999px; border: 1px solid var(--line); color: #b7c4bd; background: #0a0f0c; padding: 0 13px; font-size: 10px; cursor: pointer; }
.example-chip:hover { border-color: rgba(109,255,155,.4); color: var(--text); }
.footer { border-top: 1px solid var(--line); padding-top: 13px; display: flex; justify-content: space-between; gap: 20px; color: #65746c; font-size: 9px; letter-spacing: .1em; }
#messageBar { color: var(--green); text-align: right; }
@media (max-width: 1120px) {
  .workspace { grid-template-columns: 330px 1fr; }
  .right-panel { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 10px; align-items: start; }
  .right-panel .section-kicker, .right-panel .divider, .right-panel .fine-print, .right-panel .export-note { grid-column: 1 / -1; }
  .right-panel .metric-card, .right-panel .metric-split, .right-panel .export-btn { margin-top: 0; }
}
@media (max-width: 760px) {
  .app-shell { padding: 0 10px 14px; }
  .topbar { min-height: 72px; }
  .status-pill { display: none; }
  .workspace { grid-template-columns: 1fr; }
  .viewer-panel { min-height: 520px; }
  .viewer { min-height: 430px; }
  .left-panel { order: 1; }
  .viewer-panel { order: 2; }
  .right-panel { order: 3; display: block; }
  .right-panel .metric-card, .right-panel .metric-split, .right-panel .export-btn { margin-top: 8px; }
  .parameter-grid { grid-template-columns: 1fr 1fr; }
  .footer { flex-direction: column; gap: 6px; }
  #messageBar { text-align: left; }
}
@media (max-width: 430px) {
  .parameter-grid { grid-template-columns: 1fr; }
  .prompt-actions { grid-template-columns: 1fr; }
  .viewer { min-height: 360px; }
  .viewer-panel { min-height: 450px; }
}

/* generation progress + local WebGL fallback UI */
.viewer canvas#viewerCanvas { position:absolute; inset:0; width:100%; height:100%; z-index:2; touch-action:none; }
.viewer-loading { background:rgba(5,9,7,.58); backdrop-filter:blur(5px); padding:18px; }
.generation-card { width:min(430px,calc(100% - 20px)); padding:16px; border:1px solid var(--line-strong); border-radius:12px; background:rgba(8,13,10,.94); box-shadow:0 18px 70px rgba(0,0,0,.28); }
.generation-top { display:flex; align-items:center; justify-content:space-between; gap:12px; font-size:10px; letter-spacing:.12em; }
.generation-top strong { color:var(--text); }
.generation-top span { color:var(--green); font-variant-numeric:tabular-nums; }
.progress-track { height:8px; margin-top:11px; overflow:hidden; border-radius:999px; background:#152019; border:1px solid #25352b; }
.progress-fill { width:0%; height:100%; border-radius:inherit; background:linear-gradient(90deg,var(--green-2),var(--green)); transition:width .18s ease; }
.progress-stage { margin-top:9px; color:var(--muted); font-size:10px; line-height:1.4; }
.viewer-error { position:absolute; inset:18px; z-index:4; display:flex; flex-direction:column; justify-content:center; align-items:center; text-align:center; gap:8px; border:1px solid rgba(255,127,127,.35); border-radius:12px; background:rgba(18,8,8,.88); padding:18px; }
.viewer-error[hidden] { display:none; }
.viewer-error strong { color:var(--danger); font-size:12px; letter-spacing:.1em; }
.viewer-error span { color:#d6bcbc; max-width:520px; font-size:11px; line-height:1.5; }
button:disabled { opacity:.42; cursor:not-allowed; filter:none!important; }

/* Local file viewer additions */
.viewer-workspace { grid-template-columns:minmax(280px,340px) minmax(420px,1fr) minmax(250px,300px); }
.full-btn { width:100%; margin-top:9px; }
.upload-zone { margin-top:10px; min-height:210px; border:1px dashed rgba(109,255,155,.35); border-radius:14px; background:linear-gradient(180deg,rgba(109,255,155,.055),rgba(7,11,8,.55)); display:flex; flex-direction:column; align-items:center; justify-content:center; text-align:center; gap:7px; padding:20px; cursor:pointer; outline:none; transition:border-color .15s ease,background .15s ease,transform .15s ease; }
.upload-zone:focus-visible,.upload-zone.dragging { border-color:var(--green); background:rgba(109,255,155,.11); }
.upload-zone strong { font-size:12px; letter-spacing:.08em; }
.upload-zone span { color:var(--muted); font-size:11px; }
.upload-zone small { margin-top:6px; color:#66766d; font-size:9px; letter-spacing:.12em; }
.upload-glyph { width:58px; height:58px; border:1px solid rgba(109,255,155,.35); border-radius:16px; display:grid; place-items:center; color:var(--green); font-size:30px; background:rgba(109,255,155,.06); margin-bottom:5px; }
.file-details { display:grid; gap:7px; margin-top:10px; }
.file-details > div { display:grid; grid-template-columns:72px minmax(0,1fr); gap:9px; align-items:center; min-height:38px; padding:8px 10px; border:1px solid var(--line); border-radius:9px; background:#090e0b; }
.file-details span { color:var(--muted); font-size:10px; }
.file-details strong { min-width:0; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; font-size:10px; text-align:right; }
.select-field { display:block; margin-top:10px; }
.select-field > span { display:block; color:var(--muted); font-size:10px; margin:0 0 5px 2px; }
.select-field select { width:100%; min-height:44px; padding:0 10px; color:var(--text); background:#080d0a; border:1px solid var(--line-strong); border-radius:9px; font-size:12px; }
.toggle-grid { display:grid; grid-template-columns:1fr 1fr; gap:8px; margin-top:8px; }
.secondary-btn.active { color:#061109; background:var(--green); border-color:var(--green); }
.check-icon.neutral { color:var(--muted); background:#151d18; border:1px solid var(--line); }
.viewer-badges { display:flex; gap:7px; flex-wrap:wrap; justify-content:flex-end; }
.viewer-empty { position:absolute; inset:0; z-index:1; display:flex; flex-direction:column; align-items:center; justify-content:center; text-align:center; gap:8px; padding:24px; pointer-events:none; }
.viewer-empty strong { font-size:11px; letter-spacing:.11em; color:#b8c5bd; }
.viewer-empty span { color:#68786f; font-size:10px; }
.empty-model-icon { width:82px; height:82px; display:grid; place-items:center; border:1px solid var(--line-strong); border-radius:24px; color:var(--green); font-size:38px; background:rgba(109,255,155,.04); margin-bottom:6px; }
.format-strip { display:grid; grid-template-columns:repeat(5,minmax(0,1fr)); gap:8px; padding:2px 0 14px; }
.format-strip > div { border:1px solid var(--line); border-radius:10px; background:#0a0f0c; padding:10px 12px; min-width:0; }
.format-strip strong { display:block; color:var(--green); font-size:11px; }
.format-strip span { display:block; margin-top:3px; color:var(--muted); font-size:9px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
@media (max-width:1120px){.viewer-workspace{grid-template-columns:320px 1fr}.viewer-workspace .right-panel{grid-column:1/-1}.format-strip{grid-template-columns:repeat(3,minmax(0,1fr));}}
@media (max-width:760px){.viewer-workspace{grid-template-columns:1fr}.format-strip{grid-template-columns:1fr 1fr}.upload-zone{min-height:170px}.viewer-workspace .viewer-panel{order:1}.viewer-workspace .left-panel{order:2}.viewer-workspace .right-panel{order:3}}
@media (max-width:430px){.format-strip{grid-template-columns:1fr}.toggle-grid{grid-template-columns:1fr}}


/* Model / print preview tabs */
.viewer-toolbar { display:flex; align-items:center; justify-content:flex-end; gap:10px; flex-wrap:wrap; }
.view-tabs { display:flex; gap:4px; padding:3px; border:1px solid var(--line); border-radius:10px; background:#090e0b; }
.view-tab { min-height:34px; padding:0 11px; border:0; border-radius:7px; background:transparent; color:var(--muted); font-size:9px; font-weight:900; letter-spacing:.09em; cursor:pointer; }
.view-tab.active { color:#061109; background:var(--green); }
.view-tab:disabled { opacity:.38; cursor:not-allowed; }
.print-mode-hud { position:absolute; left:12px; bottom:12px; z-index:3; display:flex; align-items:center; gap:8px; padding:8px 10px; border:1px solid rgba(109,255,155,.32); border-radius:9px; background:rgba(7,12,9,.86); backdrop-filter:blur(4px); pointer-events:none; }
.print-mode-hud[hidden] { display:none; }
.print-mode-hud strong { color:var(--green); font-size:9px; letter-spacing:.11em; }
.print-mode-hud span { color:#b7c4bd; font-size:9px; }
.print-setting-row { display:flex; justify-content:space-between; align-items:center; gap:12px; margin-top:10px; padding:10px; border:1px solid var(--line); border-radius:9px; background:#090e0b; }
.print-setting-row span { color:var(--muted); font-size:10px; }
.print-setting-row strong { font-size:9px; letter-spacing:.07em; color:var(--text); text-align:right; }
.color-field { display:block; margin-top:10px; }
.color-field > span { display:block; color:var(--muted); font-size:10px; margin:0 0 5px 2px; }
.color-field > div { min-height:44px; display:flex; align-items:center; gap:10px; padding:7px 10px; border:1px solid var(--line-strong); border-radius:9px; background:#080d0a; }
.color-field input[type="color"] { width:44px; height:30px; padding:0; border:0; border-radius:7px; background:transparent; cursor:pointer; }
.color-field strong { font-size:10px; letter-spacing:.08em; }
.material-swatches { display:grid; gap:7px; margin-top:10px; }
.material-swatch { display:flex; align-items:center; gap:9px; min-height:38px; padding:7px 9px; border:1px solid var(--line); border-radius:9px; background:#090e0b; }
.material-swatch i { width:24px; height:24px; flex:0 0 auto; border-radius:7px; border:1px solid rgba(255,255,255,.15); box-shadow:inset 0 0 0 1px rgba(0,0,0,.18); }
.material-swatch span { min-width:0; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; color:#c7d4cc; font-size:10px; }
.print-preview-note { margin-top:10px; color:#77887e; font-size:9px; line-height:1.5; }
@media (max-width:760px){.viewer-topline{align-items:flex-start;flex-direction:column}.viewer-toolbar{width:100%;justify-content:space-between}.view-tabs{order:1}.viewer-badges{order:2}}
@media (max-width:430px){.viewer-toolbar{align-items:stretch;flex-direction:column}.view-tabs{width:100%}.view-tab{flex:1}.viewer-badges{justify-content:flex-start}}