:root { --gold:#e8b93c; --bg:#0f0f12; --panel:#17171c; --line:#2a2a32; --txt:#f2ead8; --dim:#9a927e; }
* { box-sizing:border-box; }
body { margin:0; background:var(--bg); color:var(--txt); font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif; }
.topbar { display:flex; justify-content:space-between; align-items:center; padding:14px 20px; border-bottom:1px solid var(--line); }
.topbar h1 { margin:0; letter-spacing:3px; color:var(--gold); font-size:22px; }
.topbar p { margin:2px 0 0; color:var(--dim); font-size:13px; }
.btn { background:#26262e; color:var(--txt); border:1px solid var(--line); border-radius:8px; padding:8px 14px; cursor:pointer; font-size:14px; }
.btn:hover { border-color:var(--gold); }
.btn.gold { background:var(--gold); color:#191407; border-color:var(--gold); font-weight:700; }
.btn.small { padding:5px 10px; font-size:12px; }
.btn.big { padding:12px 18px; font-size:15px; }
.layout { display:flex; gap:0; min-height:calc(100vh - 130px); }
.viewport-wrap { flex:1; padding:16px; min-width:0; }
#viewport { width:100%; height:560px; background:radial-gradient(circle at 50% 30%, #23232c, #121216); border:1px solid var(--line); border-radius:12px; overflow:hidden; }
#viewport canvas { display:block; width:100%; height:100%; }
.viewbar { display:flex; gap:8px; align-items:center; margin-top:10px; flex-wrap:wrap; }
.stats { color:var(--dim); font-size:12px; margin-left:auto; }
.exportbar { display:flex; gap:10px; margin-top:12px; }
.note { margin-top:8px; color:var(--gold); font-size:13px; min-height:18px; }
.panel { width:340px; flex:none; background:var(--panel); border-left:1px solid var(--line); padding:14px; overflow-y:auto; }
.tabs { display:flex; gap:4px; flex-wrap:wrap; margin-bottom:12px; }
.tabs button { background:#26262e; color:var(--txt); border:1px solid var(--line); border-radius:6px; padding:6px 10px; cursor:pointer; font-size:12px; }
.tabs button.active { background:var(--gold); color:#191407; font-weight:700; }
.tabpage { display:none; }
.tabpage.active { display:block; }
.tabpage h2 { font-size:13px; letter-spacing:1px; text-transform:uppercase; color:var(--gold); margin:16px 0 8px; }
.tabpage h2:first-child { margin-top:0; }
.grid { display:grid; grid-template-columns:repeat(3, 1fr); gap:6px; }
.grid button { background:#26262e; color:var(--txt); border:1px solid var(--line); border-radius:8px; padding:8px 4px; cursor:pointer; font-size:12px; }
.grid button.active { border-color:var(--gold); background:#3a3016; }
.swatches { display:flex; gap:6px; flex-wrap:wrap; }
.swatches button { width:30px; height:30px; border-radius:50%; border:2px solid var(--line); cursor:pointer; padding:0; }
.swatches button.active { border-color:var(--gold); transform:scale(1.12); }
.row { display:flex; align-items:center; gap:8px; margin:8px 0; font-size:13px; }
.row input[type=range] { flex:1; accent-color:var(--gold); }
.row input[type=color] { width:44px; height:30px; border:1px solid var(--line); background:none; padding:2px; }
.row select { background:#26262e; color:var(--txt); border:1px solid var(--line); border-radius:6px; padding:6px; }
.row.check input { accent-color:var(--gold); }
.hint { color:var(--dim); font-size:12px; line-height:1.5; }
.checks { list-style:none; padding:0; margin:0; }
.checks li { font-size:13px; padding:6px 0; border-bottom:1px solid var(--line); }
.checks li.ok { color:#8fe388; }
.checks li.bad { color:#ff8a7a; }
.steps { font-size:13px; line-height:1.6; padding-left:20px; }
.steps li { margin-bottom:8px; }
.foot { padding:12px 20px; border-top:1px solid var(--line); color:var(--dim); font-size:12px; }
@media (max-width: 900px) {
  .layout { flex-direction:column; }
  .panel { width:auto; border-left:none; border-top:1px solid var(--line); }
  #viewport { height:420px; }
}