*{margin:0;padding:0;box-sizing:border-box}
body{background:#06070d;width:100vw;height:100vh;overflow:hidden;font-family:'Segoe UI',system-ui,sans-serif;color:#e0e0e0}
canvas{position:fixed;inset:0;width:100vw;height:100vh;z-index:0;cursor:crosshair;background:#06070d}
canvas.playing{cursor:default}
#backBtn{position:fixed;top:14px;left:16px;z-index:20;color:rgba(255,255,255,.35);text-decoration:none;font-size:13px;font-weight:600;letter-spacing:2px;padding:6px 12px;border-radius:4px;transition:all .2s}
#backBtn:hover{color:#fff;background:rgba(255,255,255,.1)}
#ui{position:fixed;inset:0;pointer-events:none;z-index:1}
#topbar{position:absolute;top:8px;left:50%;transform:translateX(-50%);display:flex;gap:6px;pointer-events:auto;background:rgba(0,0,0,.65);padding:8px;border-radius:12px;border:1px solid rgba(255,255,255,.08);max-width:96%;flex-wrap:wrap;justify-content:center;align-items:center}
#palette{display:flex;gap:4px;flex-wrap:wrap}
.swatch{width:40px;height:40px;border-radius:6px;border:2px solid rgba(255,255,255,.1);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:16px;transition:transform .12s;position:relative}
.swatch:hover{transform:scale(1.08)}
.swatch.active{border-color:#fff;box-shadow:0 0 0 2px rgba(140,224,255,.4)}
.swatch .lbl{position:absolute;bottom:-16px;left:50%;transform:translateX(-50%);font-size:9px;color:rgba(255,255,255,.7);letter-spacing:1px;white-space:nowrap;pointer-events:none;opacity:0;transition:opacity .12s}
.swatch:hover .lbl{opacity:1}
#separator{width:1px;background:rgba(255,255,255,.1);margin:0 4px;align-self:stretch}
.bigbtn{padding:9px 16px;background:rgba(255,255,255,.05);color:#cbd5e1;border:1px solid rgba(255,255,255,.1);border-radius:8px;font-size:13px;letter-spacing:1.5px;font-weight:800;cursor:pointer;transition:all .15s}
.bigbtn:hover{background:rgba(255,255,255,.15)}
.bigbtn.active{background:linear-gradient(135deg,#3b82f6,#1d4ed8);color:#fff;border-color:rgba(255,255,255,.2)}
.bigbtn.build.active{background:linear-gradient(135deg,#22c55e,#15803d)}
.iconbtn{padding:8px 12px;background:rgba(255,255,255,.05);color:#cbd5e1;border:1px solid rgba(255,255,255,.1);border-radius:8px;font-size:16px;cursor:pointer;transition:all .15s}
.iconbtn:hover{background:rgba(255,255,255,.15)}
#hint{position:absolute;bottom:14px;left:50%;transform:translateX(-50%);font-size:12px;letter-spacing:1.5px;color:rgba(255,255,255,.45);text-align:center;max-width:96%}
#status{position:absolute;top:80px;left:50%;transform:translateX(-50%);font-size:13px;color:#fde047;background:rgba(0,0,0,.7);padding:6px 12px;border-radius:6px;display:none}
#status.visible{display:block}
#timer{position:absolute;top:80px;right:16px;font-size:18px;font-weight:900;color:#fde047;font-family:'JetBrains Mono','Menlo',monospace;background:rgba(0,0,0,.6);padding:6px 12px;border-radius:6px;display:none}
#timer.visible{display:block}
#settingsPanel,#browsePanel,#lbPanel{position:fixed;top:60px;right:16px;width:320px;max-height:80vh;overflow-y:auto;background:rgba(15,23,42,.96);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:14px;pointer-events:auto;display:none;z-index:5;box-shadow:0 20px 60px rgba(0,0,0,.6)}
#settingsPanel.visible,#browsePanel.visible,#lbPanel.visible{display:block}
.sp-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.sp-head h2{font-size:14px;letter-spacing:3px;color:#fff}
.sp-close{background:transparent;border:none;color:#aaa;font-size:22px;cursor:pointer;padding:0 6px;line-height:1}
.sp-close:hover{color:#fff}
#settingsPanel label{display:flex;flex-direction:column;gap:4px;margin-bottom:10px;font-size:11px;color:rgba(255,255,255,.6);letter-spacing:1.5px}
#settingsPanel label span{display:inline-block;color:#fde047;font-weight:700;margin-left:6px}
#settingsPanel input[type=text],#settingsPanel input[type=url]{padding:6px 8px;background:#1e293b;color:#e0e0e0;border:1px solid rgba(255,255,255,.1);border-radius:4px;font-size:13px}
#settingsPanel input[type=range]{width:100%}
#settingsPanel select{padding:6px;background:#1e293b;color:#e0e0e0;border:1px solid rgba(255,255,255,.1);border-radius:4px}
.sp-foot{font-size:10px;color:rgba(255,255,255,.4);margin-top:8px}
#levelList .lvl-row{display:flex;justify-content:space-between;align-items:center;padding:8px;border:1px solid rgba(255,255,255,.08);border-radius:6px;margin-bottom:6px;cursor:pointer;transition:background .12s}
#levelList .lvl-row:hover{background:rgba(255,255,255,.08)}
.lvl-section{font-size:10px;letter-spacing:2px;color:rgba(255,255,255,.5);margin:8px 4px 4px;font-weight:700}
.lvl-name{font-weight:700;color:#fff;font-size:13px}
.lvl-tag{font-size:10px;color:#fde047;letter-spacing:1px;margin-left:4px}
.lvl-meta{font-size:10px;color:rgba(255,255,255,.5);letter-spacing:1px}
#lbList{padding-left:28px}
#lbList li{padding:4px 0;font-size:13px;color:#cbd5e1}
#lbList li.me{color:#fde047;font-weight:700}
#overlay,#winOverlay,#deathOverlay{position:fixed;inset:0;background:rgba(6,7,13,.94);display:none;flex-direction:column;align-items:center;justify-content:center;z-index:10;padding:20px;text-align:center}
#overlay.visible,#winOverlay.visible,#deathOverlay.visible{display:flex}
#overlay h1{font-size:64px;font-weight:900;letter-spacing:10px;background:linear-gradient(135deg,#f97316,#a855f7);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:14px}
#winOverlay h1{font-size:72px;font-weight:900;letter-spacing:10px;background:linear-gradient(135deg,#22c55e,#16a34a);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:14px}
#deathOverlay h1{font-size:64px;font-weight:900;letter-spacing:10px;background:linear-gradient(135deg,#ef4444,#b91c1c);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:14px}
p{margin-bottom:10px;color:rgba(255,255,255,.7);max-width:560px}
.controls{font-size:12px;letter-spacing:1.5px;color:rgba(255,255,255,.45);margin-top:18px;margin-bottom:24px}
button{padding:14px 36px;font-size:16px;font-weight:700;letter-spacing:3px;background:linear-gradient(135deg,#f97316,#c2410c);color:#fff;border:none;border-radius:8px;cursor:pointer;transition:all .2s;margin:6px}
button:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(249,115,22,.3)}
.subtle-btn{background:rgba(255,255,255,.08);font-weight:500}
.subtle-btn:hover{background:rgba(255,255,255,.15);box-shadow:none}