:root{--bg: #16161d;--bg-raised: #1f1f28;--ink: #f2f0e9;--ink-dim: #8b8a94;--accent: #4aa3ff;--accent-soft: rgba(74, 163, 255, .55);--good: #58c98b;--warn-tight: #ff6b6b;--warn-loose: #5aa7ff;--card-border: #32323e;font-family:Avenir Next,Helvetica Neue,Helvetica,Arial,sans-serif}*{box-sizing:border-box;margin:0;padding:0}html,body{min-height:100%}body{background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased}#app{min-height:100vh;display:flex;flex-direction:column}button{font:inherit;color:inherit;background:var(--bg-raised);border:1px solid var(--card-border);border-radius:8px;padding:.55rem 1.1rem;cursor:pointer;transition:border-color .15s ease,background .15s ease}button:hover{border-color:var(--accent)}button.primary{background:var(--accent);border-color:var(--accent);color:#0c1017;font-weight:600}button.primary:hover{filter:brightness(1.1)}button.ghost{background:transparent}button.active{border-color:var(--accent);color:var(--accent)}input[type=text],select{font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--card-border);border-radius:8px;padding:.55rem .8rem}input[type=text]:focus,select:focus{outline:none;border-color:var(--accent)}.topbar{display:flex;align-items:center;gap:1rem;padding:.9rem 1.4rem;border-bottom:1px solid var(--card-border)}.topbar .brand{font-weight:700;letter-spacing:.02em;cursor:pointer}.topbar .brand span{color:var(--accent)}.topbar .spacer{flex:1}.hint-text{color:var(--ink-dim);font-size:.85rem}.home{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2.2rem;padding:2rem}.home h1{font-size:2.6rem;letter-spacing:-.01em}.home h1 span{color:var(--accent)}.home .tagline{color:var(--ink-dim);max-width:42rem;text-align:center;line-height:1.5}.cards{display:flex;gap:1.4rem;flex-wrap:wrap;justify-content:center}.card{background:var(--bg-raised);border:1px solid var(--card-border);border-radius:14px;padding:1.6rem;width:22rem;display:flex;flex-direction:column;gap:.9rem}.card h2{font-size:1.15rem}.card p{color:var(--ink-dim);font-size:.9rem;line-height:1.45}.dropzone{border:2px dashed var(--card-border);border-radius:10px;padding:1.6rem 1rem;text-align:center;color:var(--ink-dim);cursor:pointer;transition:border-color .15s ease}.dropzone.dragover,.dropzone:hover{border-color:var(--accent);color:var(--ink)}.stage-wrap{flex:1;display:flex;flex-direction:column;min-height:0}.stage-box{flex:1;position:relative;min-height:48vh}.stage-box.compact{flex:0 0 auto;min-height:0}canvas.stage{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;display:block;touch-action:none}.stage-footer{display:flex;align-items:center;gap:.8rem;padding:.9rem 1.4rem;border-top:1px solid var(--card-border);flex-wrap:wrap}.center-row{display:flex;justify-content:center;padding:.4rem 1.4rem 0}.score-panel{display:flex;align-items:stretch;border:1px solid var(--ink-dim);max-width:min(58rem,92vw)}.score-panel .score-cell{display:flex;align-items:center;padding:1rem 1.8rem;font-size:3.2rem;font-weight:800;color:var(--ink);border-right:1px solid var(--ink-dim)}.score-panel .desc-cell{display:flex;flex-direction:column;justify-content:center;padding:1rem 1.4rem;font-size:.95rem;line-height:1.5;color:var(--ink);max-width:36rem}.score-panel .actions-cell{display:flex;flex-direction:column;justify-content:center;gap:.5rem;padding:.9rem 1.1rem;border-left:1px solid var(--ink-dim)}.section-title{text-align:center;text-transform:uppercase;letter-spacing:.14em;font-size:.95rem;font-weight:600;margin-top:1.1rem}.view-toggle{display:flex;gap:0;border:1px solid var(--card-border);border-radius:10px;overflow:hidden}.view-toggle button{border:none;border-radius:0;background:transparent;padding:.45rem .9rem;font-size:.85rem;color:var(--ink-dim)}.view-toggle button+button{border-left:1px solid var(--card-border)}.view-toggle button.active{background:var(--bg);color:var(--accent)}.hotspot-layer{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none}.hotspot-layer.hidden{display:none}.hotspot{position:absolute;transform:translate(-50%,-50%);pointer-events:auto}.hotspot-dot{width:20px;height:20px;border-radius:50%;border:1.5px solid var(--ink-dim);color:var(--ink-dim);background:var(--bg);font-size:12px;line-height:17px;text-align:center;cursor:help;transition:transform .12s ease,border-color .12s ease}.hotspot:hover .hotspot-dot{transform:scale(1.2)}.hotspot[data-verdict=tight] .hotspot-dot{border-color:var(--warn-tight);color:var(--warn-tight)}.hotspot[data-verdict=loose] .hotspot-dot{border-color:var(--warn-loose);color:var(--warn-loose)}.hotspot[data-verdict=balanced] .hotspot-dot{border-color:var(--good);color:var(--good)}.hotspot-pop{display:none;position:absolute;top:26px;left:50%;transform:translate(-50%);width:28rem;max-width:86vw;background:var(--bg-raised);border:1px solid var(--card-border);border-radius:12px;padding:.9rem 1rem;z-index:30;box-shadow:0 10px 30px #00000080}.hotspot:hover .hotspot-pop{display:block}.pair-name{font-weight:700;font-size:1.05rem;display:flex;align-items:center;gap:.5rem;margin-bottom:.4rem}.verdict{font-size:.78rem;font-weight:400;padding:.1rem .5rem;border-radius:99px;border:1px solid}.verdict.balanced{color:var(--good);border-color:var(--good)}.verdict.tight{color:var(--warn-tight);border-color:var(--warn-tight)}.verdict.loose{color:var(--warn-loose);border-color:var(--warn-loose)}.hotspot-pop .hotspot-status{color:var(--ink);font-size:.85rem;line-height:1.45;margin-bottom:.5rem}.hotspot-pop .hotspot-why{color:var(--ink-dim);font-size:.82rem;line-height:1.45;margin-bottom:.7rem}.example-row{display:flex;gap:.8rem;align-items:flex-end}.example{border:1px solid var(--card-border);border-radius:8px;padding:.35rem;background:var(--bg);min-width:0;overflow:hidden}.example.good{border-color:#58c98b80}.example.bad{border-color:#ff6b6b73}.example canvas{display:block;max-width:100%}.example-label{font-size:.72rem;margin-top:.3rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.example.good .example-label{color:var(--good)}.example.bad .example-label{color:var(--warn-tight)}.stage-tools{position:absolute;top:14px;left:50%;transform:translate(-50%);display:flex;gap:.5rem;z-index:12}.stage-tools button{font-size:.85rem;padding:.4rem .85rem;background:#1f1f28d9}.example-row{justify-content:space-between}.method-blurb{max-width:52rem;line-height:1.5;margin:.8rem auto 0;padding:0 1.4rem}.drawer{position:fixed;top:0;right:0;bottom:0;width:min(26rem,92vw);background:var(--bg-raised);border-left:1px solid var(--card-border);padding:1.4rem;overflow-y:auto;transform:translate(100%);transition:transform .22s ease;z-index:20}.drawer.open{transform:translate(0)}.drawer h2{margin-bottom:1rem}.drawer .principle{margin-bottom:1.1rem}.drawer .principle h3{font-size:.95rem;margin-bottom:.25rem;color:var(--accent)}.drawer .principle p{color:var(--ink-dim);font-size:.86rem;line-height:1.5}.drawer .close{float:right}.editor-toolbar{display:flex;gap:.6rem;align-items:center;padding:.9rem 1.4rem;flex-wrap:wrap}.notice{background:#ffc1071f;border:1px solid rgba(255,193,7,.45);color:#ffd54f;border-radius:8px;padding:.5rem .9rem;font-size:.85rem}.notice.ok{background:#58c98b1a;border-color:var(--good);color:var(--good)}