:root{color-scheme:dark;--bg:#05070c;--panel:#0c1220;--line:#1e293b;--text:#e2e8f0;--muted:#94a3b8;--accent:#38bdf8}*{box-sizing:border-box}body,html{margin:0;min-height:100%;background:radial-gradient(circle at top,#122033 0,var(--bg) 48%);color:var(--text);font-family:Segoe UI,system-ui,sans-serif}button,input,textarea{font:inherit}.app-shell{display:grid;grid-template-columns:minmax(320px,420px) 1fr;min-height:100vh}.panel{border-right:1px solid var(--line);background:rgba(12,18,32,.92);padding:28px}.eyebrow{letter-spacing:.16em;text-transform:uppercase;font-size:11px;color:var(--accent);margin:0 0 8px}h1{margin:0 0 12px;font-size:32px}.lede{line-height:1.5;margin-bottom:24px}.lede,label{color:var(--muted)}label{display:block;font-size:13px;margin-bottom:8px}.file-row,textarea{width:100%;border:1px solid var(--line);background:#080d16;color:var(--text);border-radius:12px}textarea{min-height:140px;padding:14px;resize:vertical}.file-row{padding:10px 12px;margin-top:16px}.actions{display:flex;gap:12px;margin-top:18px}button{border:0;border-radius:12px;padding:12px 16px;cursor:pointer}button.primary{background:linear-gradient(180deg,#38bdf8,#0284c7);color:#041018;font-weight:700}button.ghost{background:transparent;color:var(--muted);border:1px solid var(--line)}button:disabled{opacity:.55;cursor:not-allowed}.status{margin-top:20px;padding:14px;border-radius:12px;background:#08101b;border:1px solid var(--line);color:var(--muted);min-height:72px}.viewer{position:relative}.viewer canvas{width:100%!important;height:100vh!important}.badge{position:absolute;top:20px;right:20px;z-index:2;background:rgba(8,16,27,.8);border:1px solid var(--line);padding:8px 12px;border-radius:999px;font-size:12px;color:var(--muted)}@media (max-width:900px){.app-shell{grid-template-columns:1fr}.panel{border-right:0;border-bottom:1px solid var(--line)}.viewer canvas{height:60vh!important}}