:root{
  --bg1:#111827; --bg2:#030712;
  --cyan:#22d3ee; --blue:#3b82f6; --green:#34d399; --amber:#fbbf24;
  --glass:rgba(17,24,39,.72); --line:rgba(255,255,255,.1);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;overflow:hidden}
body{
  font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  color:#fff;user-select:none;-webkit-user-select:none;touch-action:none;
  background:radial-gradient(circle at 50% 45%,var(--bg1),var(--bg2));
}
#canvas-container{position:fixed;inset:0;z-index:0}
canvas{display:block;width:100%;height:100%;touch-action:none;cursor:grab}
canvas.grabbing{cursor:grabbing}
canvas.hovering{cursor:pointer}

.panel{background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--line);box-shadow:0 10px 30px rgba(0,0,0,.4)}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}

/* WATERMARK */
#watermark{position:fixed;top:10px;left:50%;transform:translateX(-50%);z-index:12;pointer-events:none}
#watermark img{display:block;height:auto;max-width:90vw}
#watermark.hidden{display:none}

/* HUD */
.hud{position:fixed;top:0;left:0;right:0;z-index:10;display:flex;justify-content:space-between;gap:8px;padding:10px 12px;pointer-events:none;flex-wrap:wrap}
.hud .panel{pointer-events:auto;border-radius:18px}
.hud-left{display:flex;align-items:center;gap:12px;padding:8px 12px}
.hud-right{display:flex;align-items:center;gap:10px;padding:6px 12px}
.brand{display:flex;align-items:center;gap:8px;font-weight:800;letter-spacing:.08em;font-size:15px;background:linear-gradient(90deg,var(--cyan),var(--blue));-webkit-background-clip:text;background-clip:text;color:transparent}
.dot{width:10px;height:10px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);animation:pulse 1.6s infinite}
@keyframes pulse{50%{opacity:.35}}
.seg{display:flex;background:rgba(3,7,18,.7);border:1px solid rgba(75,85,99,.5);border-radius:12px;padding:3px;gap:2px}
.seg button{padding:5px 10px;border-radius:9px;font-size:12px;font-weight:700;color:#cbd5e1;transition:.2s}
.seg button:hover{background:#374151}
.seg button.on{background:var(--blue);color:#fff;box-shadow:0 0 12px rgba(59,130,246,.6)}
.seg.wide{width:100%}.seg.wide button{flex:1;padding:9px}
.stat{text-align:center;min-width:42px}
.stat small{display:block;font-size:9px;text-transform:uppercase;letter-spacing:.1em;color:#9ca3af;font-weight:700}
.stat b{font-size:18px;font-weight:800}
.c-cyan{color:var(--cyan)}.c-green{color:var(--green)}.c-amber{color:var(--amber)}
.sep{width:1px;height:22px;background:#374151}
.round{width:34px;height:34px;border-radius:50%;background:#1f2937;border:1px solid #4b5563;font-weight:800;color:var(--cyan);transition:.2s}
.round:hover{background:#374151;box-shadow:0 0 14px rgba(34,211,238,.45)}

/* progress */
#progress-wrap{position:fixed;left:50%;bottom:84px;transform:translateX(-50%);width:min(320px,70vw);z-index:9;opacity:0;transition:opacity .4s;pointer-events:none}
#progress-wrap.show{opacity:1}
.progress-top{display:flex;justify-content:space-between;font-size:10px;font-weight:800;color:#9ca3af;margin-bottom:4px;padding:0 3px}
#progress-text{color:var(--cyan)}
.progress-track{height:9px;border-radius:99px;background:#111827;border:1px solid #374151;overflow:hidden}
#progress-bar{height:100%;width:0;background:linear-gradient(90deg,#06b6d4,#3b82f6);transition:width .3s}
#progress-bar.done{background:linear-gradient(90deg,#4ade80,#10b981)}

/* toolbar */
.toolbar{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);z-index:10;display:flex;gap:8px;padding:8px;border-radius:18px}
.tb{padding:9px 14px;border-radius:12px;font-size:13px;font-weight:700;background:#1f2937;border:1px solid #374151;transition:.2s}
.tb:hover:not(:disabled){box-shadow:0 0 16px rgba(59,130,246,.55);transform:translateY(-1px)}
.tb:active:not(:disabled){transform:translateY(1px)}
.tb:disabled{opacity:.4;cursor:not-allowed}
.tb.primary{background:var(--blue);border-color:#60a5fa}
.tb#btn-undo{background:rgba(147,51,234,.35);border-color:rgba(168,85,247,.5);color:#e9d5ff}
.tb.icon{padding:9px 12px}
.tb.muted-on{opacity:.55}

/* menu */
.menu{position:fixed;inset:0;z-index:30;display:flex;align-items:center;padding:16px;pointer-events:none;opacity:0;visibility:hidden;transition:opacity .35s,visibility .35s}
.menu.show{opacity:1;visibility:visible}
.menu-card{pointer-events:auto;width:min(380px,100%);max-height:calc(100vh - 32px);overflow:auto;border-radius:24px;padding:22px 22px 20px;margin-left:clamp(0px,3vw,48px);transform:translateX(-16px);transition:transform .35s;touch-action:pan-y}
.menu.show .menu-card{transform:none}
.menu-card h1{margin:0 0 4px;font-size:24px;font-weight:900}
.menu-card h1 span{background:linear-gradient(90deg,var(--cyan),var(--blue));-webkit-background-clip:text;background-clip:text;color:transparent}
.menu-card h3{margin:16px 0 8px;font-size:11px;text-transform:uppercase;letter-spacing:.12em;color:#9ca3af;display:flex;justify-content:space-between;align-items:center}
.menu-card h3 em{font-style:normal;color:var(--cyan);text-transform:none;letter-spacing:0}
.muted{color:#94a3b8;font-size:12.5px;margin:0}
.link{font-size:11px;color:var(--cyan);text-transform:none;letter-spacing:0;text-decoration:underline}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{padding:7px 11px 7px 8px;border-radius:12px;background:#1f2937;border:1px solid #374151;font-size:12px;font-weight:700;display:flex;align-items:center;gap:7px;transition:.2s}
.chip:hover{background:#2b3648}
.chip.on{border-color:var(--cyan);box-shadow:0 0 14px rgba(34,211,238,.4);background:#17283a}
.chip .sw{display:grid;grid-template-columns:repeat(3,8px);gap:1px}
.chip .sw i{width:8px;height:8px;border-radius:2px}
.chip small{color:var(--cyan);font-weight:700;font-size:9px}
.colors{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.cpick{display:flex;flex-direction:column;align-items:center;gap:5px;font-size:11px;color:#cbd5e1;font-weight:600;background:#111827;border:1px solid #1f2937;border-radius:12px;padding:8px 4px}
.cpick input{width:44px;height:30px;border:0;padding:0;background:none;cursor:pointer;border-radius:8px}
.cpick input::-webkit-color-swatch-wrapper{padding:0}
.cpick input::-webkit-color-swatch{border:2px solid rgba(255,255,255,.25);border-radius:8px}
.row{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:13px;color:#e2e8f0;padding:5px 0}
.row input[type=range]{width:46%;accent-color:var(--cyan)}
.row input[type=checkbox]{width:20px;height:20px;accent-color:var(--cyan)}
.cta{width:100%;margin-top:16px;padding:13px;border-radius:14px;font-weight:800;font-size:15px;background:linear-gradient(90deg,#0ea5e9,#3b82f6);box-shadow:0 8px 24px rgba(14,165,233,.35);transition:.2s}
.cta:hover{transform:translateY(-1px);box-shadow:0 10px 30px rgba(14,165,233,.55)}
.cta:active{transform:translateY(1px)}
.cta.amber{background:#facc15;color:#111827;box-shadow:0 8px 24px rgba(250,204,21,.3)}
.cta.red{background:rgba(220,38,38,.8);font-size:13px;padding:10px;margin-top:8px}
.cta.ghost{background:#334155;box-shadow:none;font-size:14px;padding:11px;margin-top:8px}

/* modals */
.modal{position:fixed;inset:0;z-index:50;display:flex;align-items:center;justify-content:center;padding:16px;background:rgba(0,0,0,.78);backdrop-filter:blur(8px);opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s;touch-action:pan-y}
.modal.show{opacity:1;visibility:visible}
.modal-card{width:min(400px,100%);max-height:92vh;overflow:auto;background:rgba(17,24,39,.92);border:1px solid rgba(34,211,238,.3);border-radius:24px;padding:24px;text-align:center;transform:scale(.94);transition:transform .3s;box-shadow:0 20px 60px rgba(0,0,0,.6)}
.modal.show .modal-card{transform:none}
.modal-card.win{border:2px solid #facc15;box-shadow:0 0 40px rgba(250,204,21,.3)}
.modal-card h2{margin:0 0 14px;font-size:21px;font-weight:900}
.win h2{color:#facc15}
.trophy{font-size:48px}.trophy.sm{font-size:34px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px;background:rgba(3,7,18,.6);border-radius:14px;padding:12px;margin-bottom:14px}
.grid2 small{display:block;font-size:10px;text-transform:uppercase;letter-spacing:.1em;color:#6b7280;font-weight:700}
.grid2 b{font-size:20px}
.field{display:block;text-align:left;font-size:12px;color:#9ca3af;font-weight:700}
.field input{display:block;width:100%;margin-top:6px;padding:11px 14px;border-radius:12px;border:1px solid #4b5563;background:#1f2937;color:#fff;font:inherit;font-weight:700;outline:none;user-select:text;-webkit-user-select:text}
.field input:focus{border-color:#facc15}
.lb-head,#lb-list li{display:grid;grid-template-columns:1.4fr .6fr .8fr;text-align:left;padding:8px 10px;font-size:12px}
.lb-head{font-size:10px;text-transform:uppercase;color:#6b7280;font-weight:800;border-bottom:1px solid #1f2937}
#lb-list{list-style:none;margin:0;padding:0;max-height:240px;overflow:auto;background:rgba(3,7,18,.5);border-radius:0 0 12px 12px}
#lb-list li{border-bottom:1px solid rgba(31,41,55,.6);font-weight:700}
#lb-list li span:nth-child(2){color:var(--cyan);text-align:center}
#lb-list li span:nth-child(3){color:var(--green);text-align:right}
#lb-list li span:first-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#lb-list li.empty{display:block;text-align:center;color:#6b7280;padding:18px}
.help{text-align:left;padding:0;list-style:none;margin:0 0 6px;font-size:13.5px;color:#cbd5e1;display:grid;gap:10px}
.help li::before{content:"✔ ";color:var(--cyan)}

@media (max-width:820px){
  #watermark{top:74px}
  .menu{align-items:flex-end;padding:0}
  .menu-card{width:100%;max-height:56vh;border-radius:24px 24px 0 0;margin:0;transform:translateY(24px)}
  .brand-text{display:none}
  .hud-right{gap:7px;padding:5px 9px}
  .stat b{font-size:16px}.stat{min-width:34px}
  .round{width:30px;height:30px}
}
@media (max-width:420px){ .tb{padding:9px 10px;font-size:12px} }

/* design chips preview */

.chip .dsw{position:relative;width:22px;height:22px;border-radius:6px;display:inline-block;flex:none}
.chip .dsw i{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:#22d3ee}