:root{
  --bg:#f2f4f7;--panel:#ffffff;--ink:#18202a;--muted:#667085;--line:#d8dee8;--accent:#1f5fbf;--accent2:#164c9c;--danger:#b42318;--warn:#b54708;--ok:#027a48;--shadow:0 8px 24px rgba(16,24,40,.08)
}
*{box-sizing:border-box}html,body{height:100%;margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg)}
button,input,select,textarea{font:inherit}button{border:1px solid var(--line);background:#fff;border-radius:7px;padding:7px 10px;color:var(--ink);cursor:pointer}button:hover{border-color:#aab5c4;background:#f8fafc}button:disabled{opacity:.45;cursor:not-allowed}.accent{background:var(--accent);border-color:var(--accent);color:#fff}.accent:hover{background:var(--accent2);border-color:var(--accent2)}
.topbar{height:54px;display:flex;align-items:center;justify-content:space-between;padding:0 14px;background:#111827;color:#fff;border-bottom:1px solid #0b1220;position:sticky;top:0;z-index:20}.brand{display:flex;gap:7px;align-items:baseline;font-size:18px}.brand span{font-size:13px;color:#cbd5e1}.top-actions{display:flex;gap:6px;align-items:center}.top-actions button{background:#1f2937;border-color:#374151;color:#fff}.top-actions .accent{background:#2563eb;border-color:#2563eb}
.workspace{height:calc(100vh - 54px);display:grid;grid-template-columns:minmax(300px,360px) 1fr minmax(260px,320px);min-width:1000px}.left-panel,.right-panel{background:var(--panel);border-right:1px solid var(--line)}.right-panel{border-right:0;border-left:1px solid var(--line)}.scroll-panel{overflow:auto;padding:12px}.center-panel{min-width:0;position:relative;display:flex;flex-direction:column;overflow:hidden}
.hero.compact{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.eyebrow{margin:0;color:var(--muted);font-size:10px;text-transform:uppercase;letter-spacing:.08em}.hero h1,.hero h2{margin:1px 0 0;font-size:18px}.badge{font-size:10px;padding:3px 7px;border-radius:999px;background:#ecfdf3;color:var(--ok);border:1px solid #abefc6}.badge.dirty{background:#fff7ed;color:var(--warn);border-color:#fed7aa}
details{border:1px solid var(--line);border-radius:8px;margin:8px 0;background:#fff;overflow:hidden}summary{cursor:pointer;font-size:12px;font-weight:650;padding:9px 10px;background:#f8fafc;border-bottom:1px solid transparent}details[open] summary{border-bottom-color:var(--line)}.group{padding:9px;display:grid;gap:8px}.subhead{font-size:11px;font-weight:700;color:#344054;padding-top:5px;border-top:1px dashed #d0d5dd}.hint{font-size:10px;color:var(--muted);margin:0;line-height:1.35}.warning-inline{min-height:14px;font-size:10px;color:var(--warn)}
label{display:grid;gap:3px;font-size:10px;color:#475467}input,select,textarea{width:100%;border:1px solid #cfd6e1;border-radius:6px;background:#fff;color:#111827;padding:6px 7px;min-height:30px}input[type=color]{padding:2px;height:30px}input[type=checkbox]{width:auto;min-height:0;accent-color:var(--accent)}textarea{resize:vertical}.checks label{display:flex;gap:5px;align-items:center;white-space:nowrap}.row2,.row3,.row4{display:grid;gap:7px}.row2{grid-template-columns:repeat(2,minmax(0,1fr))}.row3{grid-template-columns:repeat(3,minmax(0,1fr))}.row4{grid-template-columns:repeat(4,minmax(0,1fr))}.row3 button,.row4 button{font-size:10px;padding:6px 5px}.metric-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center;font-size:10px;color:var(--muted)}.metric-row strong{color:var(--ink);margin-right:6px}.chip-list{display:flex;gap:5px;flex-wrap:wrap}.series-chip{display:inline-flex;align-items:center;gap:5px;padding:4px 7px;border:1px solid #cbd5e1;border-radius:999px;background:#fff;font-size:10px;cursor:grab}.series-chip::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--chip,#111)}
.layout-composer{display:grid;gap:6px;min-height:70px}.panel-card{border:1px dashed #aeb8c7;border-radius:7px;padding:6px;background:#f8fafc;min-height:58px;position:relative;cursor:pointer}.panel-card.selected{border-style:solid;border-color:var(--accent);box-shadow:0 0 0 1px var(--accent) inset}.panel-card.dragover{background:#eff6ff;border-color:#60a5fa}.panel-card .panel-name{font-size:10px;font-weight:700}.panel-card .panel-series{font-size:9px;color:var(--muted);margin-top:5px;line-height:1.3}
.canvas-toolbar{height:42px;flex:0 0 auto;display:flex;align-items:center;justify-content:space-between;padding:6px 9px;border-bottom:1px solid var(--line);background:#fff}.toolbar-left,.toolbar-right{display:flex;align-items:center;gap:6px}.toolbar-right{font-size:10px;color:var(--muted)}#previewZoom{width:130px;min-height:0}.canvas-viewport{flex:1;overflow:auto;padding:28px;background:linear-gradient(45deg,#eef1f5 25%,transparent 25%),linear-gradient(-45deg,#eef1f5 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#eef1f5 75%),linear-gradient(-45deg,transparent 75%,#eef1f5 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0}.figure-paper{margin:auto;background:#fff;box-shadow:0 6px 24px rgba(15,23,42,.18);transform-origin:top left;position:relative}.figure-paper #chart{width:100%;height:100%}
.preflight-drawer{position:absolute;right:0;top:42px;bottom:0;width:min(460px,48%);background:#fff;border-left:1px solid var(--line);box-shadow:-8px 0 28px rgba(16,24,40,.12);z-index:9;overflow:auto;padding:12px}.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:9px}.drawer-head button{font-size:16px;padding:1px 7px}.preflight-item{border:1px solid var(--line);border-radius:7px;padding:8px;margin:7px 0;font-size:11px}.preflight-item.warn{border-left:4px solid #f79009}.preflight-item.error{border-left:4px solid #d92d20}.preflight-item.ok{border-left:4px solid #12b76a}.preflight-item .fix{margin-top:6px;font-size:10px}.preflight-summary{padding:8px;border-radius:7px;background:#f8fafc;font-size:11px}
.modal{position:fixed;inset:0;background:rgba(17,24,39,.45);z-index:50;display:flex;align-items:center;justify-content:center;padding:22px}.modal[hidden],.preflight-drawer[hidden]{display:none}.modal-card{width:min(900px,95vw);max-height:88vh;overflow:auto;background:#fff;border-radius:10px;box-shadow:var(--shadow);padding:14px}.modal-card.wide{width:min(1100px,96vw)}.modal-actions{display:flex;justify-content:flex-end;margin-top:10px}.data-table-wrap{overflow:auto;max-height:62vh;border:1px solid var(--line);border-radius:7px}.data-table{border-collapse:collapse;width:max-content;min-width:100%;font-size:10px}.data-table th,.data-table td{border-bottom:1px solid #e5e7eb;border-right:1px solid #eef2f6;padding:4px;white-space:nowrap}.data-table input{min-width:86px;min-height:24px;padding:3px 5px}
.anatomy-tree{font-size:11px;border:1px solid var(--line);border-radius:8px;background:#fff;padding:6px}.tree-row{display:flex;align-items:center;gap:4px;border-radius:5px;padding:3px 5px;cursor:pointer}.tree-row:hover{background:#f3f6fa}.tree-row.selected{background:#eff6ff;color:#174ea6}.tree-row.level1{padding-left:14px}.tree-row.level2{padding-left:26px}.tree-row.level3{padding-left:38px}.tree-dot{width:7px;height:7px;border-radius:50%;background:#98a2b3;flex:0 0 auto}.tree-dot.series{background:var(--series,#2563eb)}.inspector-card{margin-top:9px;border:1px solid var(--line);border-radius:8px;padding:9px;background:#fff}.inspector-card h3{font-size:12px;margin:0 0 7px}.selection-path{font-size:10px;color:var(--muted);margin-bottom:7px;word-break:break-word}.inspector-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px}.inspector-actions{display:flex;gap:6px;margin-top:7px}.small-list{font-size:10px;line-height:1.45;color:#475467}.parity-ok{color:var(--ok)}.parity-warn{color:var(--warn)}
.preview-block{display:grid;grid-template-columns:74px 1fr;align-items:center;gap:7px;font-size:9px;color:var(--muted)}.palette-strip{height:17px;border-radius:4px;border:1px solid rgba(0,0,0,.12);display:flex;overflow:hidden}.palette-strip i{flex:1;display:block}
@media(max-width:1250px){.workspace{grid-template-columns:310px 1fr 275px}.row4{grid-template-columns:repeat(2,minmax(0,1fr))}}


/* 5.2 equation + 3D view additions */
#equationParameters{display:grid;gap:8px}
.eq-param{display:grid;grid-template-columns:minmax(72px,.8fr) minmax(72px,.7fr) auto minmax(70px,.7fr) minmax(70px,.7fr) minmax(60px,.6fr);gap:7px;align-items:end;padding:8px;border:1px solid #d8dee8;border-radius:7px;background:#fbfcfe}
.eq-param label{margin:0}
.eq-param .eq-symbol{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:700;align-self:center}
#equationSection code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
@media(max-width:900px){.eq-param{grid-template-columns:1fr 1fr 1fr}.eq-param .eq-symbol{grid-column:1/-1}}

/* 5.3 animation workflow */
#animationSection .animation-inline-hint{display:flex;align-items:center;padding:0 4px}
.animation-timeline-wrap{padding:9px;border:1px solid #d8dee8;border-radius:8px;background:#fbfcfe}
.animation-timeline{width:100%;min-height:0;padding:0;accent-color:var(--accent)}
.animation-time-row{display:grid;grid-template-columns:auto 1fr auto;gap:8px;align-items:center;margin-top:5px;font-size:9px;color:var(--muted)}
.animation-time-row strong{text-align:center;color:#344054;font-weight:650}
.animation-playback button{min-width:0}
.animation-camera-head{font-size:9px;color:var(--muted);text-align:center;align-items:end}
.animation-camera-row{align-items:center}.animation-camera-row strong{font-size:10px;color:#344054}
#animationFrameCount[readonly]{background:#f8fafc;color:#475467}
#animationStatus[data-level="ok"]{color:var(--ok)}
#animationStatus[data-level="error"]{color:var(--danger)}
#animationStatus[data-level="busy"]{color:var(--accent)}

/* 5.4.0 Animation Data */
.animation-data-preview{border:1px solid #d0d5dd;border-radius:6px;padding:10px 12px;background:#fafafa;white-space:pre-wrap;font-size:.9em;line-height:1.45;min-height:54px}
#animationStatus[data-level="preview"]{border-left:3px solid #7c3aed;padding-left:8px}
#animationStatus[data-level="draft"]{border-left:3px solid #64748b;padding-left:8px}
#animationStatus[data-level="ok"]{border-left:3px solid #15803d;padding-left:8px}
#animationDataFileName{align-self:end;padding-bottom:5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}