:root{--bg: #808080;--container-bg: #f0f0f0;--container-size: 200px;--btn-size: 56px;--text: #1a1a1a;--text-muted: #555;--text-on-dark: #e0e0e0;--accent: #2a6ff0;--accent-hover: #1b5ad4;--surface: rgba(0, 0, 0, .35);--surface-solid: #555}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text);min-height:100dvh;display:flex;align-items:center;justify-content:center;touch-action:manipulation;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none}.screen{display:none;width:100%;max-width:480px;padding:1.5rem}.screen.active{display:flex;flex-direction:column;align-items:center}.card{background:#fff;border-radius:16px;padding:2rem;width:100%;box-shadow:0 4px 24px #00000026}.card h1{font-size:1.4rem;font-weight:700;margin-bottom:.5rem;color:#111}.card>p{color:var(--text-muted);line-height:1.6;font-size:.95rem;margin-bottom:1.25rem}.instructions{background:#f5f5f5;border-radius:10px;padding:1.25rem;margin-bottom:1.25rem}.instructions h3{font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin-bottom:.6rem;font-weight:600}.instructions ul{list-style:none;display:flex;flex-direction:column;gap:.4rem}.instructions li{font-size:.9rem;line-height:1.5;padding-left:1.2rem;position:relative;color:#333}.instructions li:before{content:"•";position:absolute;left:0;color:var(--accent);font-weight:700}.form-group{margin-bottom:1.25rem}.form-group label{display:block;font-size:.85rem;color:var(--text-muted);margin-bottom:.4rem;font-weight:500}.form-group input{width:100%;background:#f5f5f5;border:2px solid #e0e0e0;border-radius:8px;padding:.6rem .8rem;color:var(--text);font-size:.9rem;outline:none;transition:border-color .15s}.form-group input:focus{border-color:var(--accent)}.btn-primary,.btn-secondary{padding:.75rem 1.5rem;border-radius:10px;font-size:.95rem;font-weight:600;cursor:pointer;border:none;transition:all .15s}.btn-primary{background:var(--accent);color:#fff;width:100%}.btn-primary:hover{background:var(--accent-hover)}.btn-primary:active{transform:scale(.98)}.btn-secondary{background:#f0f0f0;color:var(--text-muted)}.btn-secondary:hover{background:#e0e0e0;color:var(--text)}#screen-trial.active{justify-content:flex-start;min-height:100dvh;padding-top:1.5rem;padding-bottom:1.5rem}.trial-header{display:flex;justify-content:space-between;align-items:center;width:100%;margin-bottom:1.25rem;padding:.6rem 1rem;background:var(--surface);border-radius:10px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.progress{font-size:.85rem;color:var(--text-on-dark);font-variant-numeric:tabular-nums;font-weight:500}.shape-label{font-size:.85rem;color:#fff;font-weight:600;text-transform:uppercase;letter-spacing:.05em}.circle-container{position:relative;width:var(--container-size);height:var(--container-size);background:var(--container-bg);border-radius:50%;overflow:hidden;box-shadow:0 2px 16px #0000001f}.square-container{position:relative;width:var(--container-size);height:var(--container-size);background:var(--container-bg);border-radius:4px;overflow:hidden;box-shadow:0 2px 16px #0000001f}#shape-canvas{position:absolute;pointer-events:none}.fixation-cross{position:absolute;top:0;left:0;right:0;bottom:0;display:flex;align-items:center;justify-content:center;font-size:2rem;font-weight:300;color:#999;pointer-events:none;font-family:SF Mono,Fira Code,monospace}.stimulus-with-controls{display:grid;grid-template-columns:var(--btn-size) var(--container-size) var(--btn-size);grid-template-rows:var(--btn-size) var(--container-size) var(--btn-size);gap:6px;align-items:center;justify-items:center;flex:1;align-content:center}.ring-btn{width:var(--btn-size);height:var(--btn-size);border:none;border-radius:12px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .1s;background:#0000001f;touch-action:manipulation;-webkit-user-select:none;user-select:none}.ring-btn:hover{background:#0003}.ring-btn:active,.ring-btn.active{background:#0000004d;transform:scale(.93)}.arrow-line{display:block;width:12px;height:12px;border:solid rgba(255,255,255,.5);border-width:0 2px 2px 0}.arrow-up .arrow-line{transform:rotate(-135deg);margin-top:3px}.arrow-down .arrow-line{transform:rotate(45deg);margin-bottom:3px}.arrow-left .arrow-line{transform:rotate(135deg);margin-left:3px}.arrow-right-icon .arrow-line{transform:rotate(-45deg);margin-right:3px}.ring-up{grid-column:2;grid-row:1}.ring-left{grid-column:1;grid-row:2}.ring-right{grid-column:3;grid-row:2}.ring-down{grid-column:2;grid-row:3}.circle-container,.square-container{grid-column:2;grid-row:2}.controls{display:flex;flex-direction:column;align-items:center;gap:1rem;width:100%;margin-top:auto;padding-top:1.5rem}.submit-row{width:100%;max-width:280px}.rest-card{text-align:center;padding:3rem 2rem}.rest-icon{font-size:3rem;opacity:.3;margin-bottom:1rem}.rest-text{font-size:1.2rem;color:#ffffffb3;margin-bottom:.5rem}.rest-progress{font-size:.85rem;color:#fff6;margin-bottom:.5rem}.rest-countdown{font-size:2rem;font-weight:700;color:#ffffff80;margin-bottom:1.5rem;font-variant-numeric:tabular-nums}#btn-continue{max-width:200px;margin:0 auto}#btn-continue:disabled{opacity:.4;cursor:not-allowed}.results-card{text-align:center;padding:3rem 2rem}.results-check{width:56px;height:56px;margin:0 auto 1.25rem;background:var(--accent);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.6rem;color:#fff;font-weight:700}.results-card h1{margin-bottom:.5rem}.results-card p{color:var(--text-muted);line-height:1.6;font-size:.95rem}.thanks-time{font-size:1.5rem;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;margin-top:1rem}@media (max-width: 400px){:root{--container-size: 180px;--btn-size: 44px}.card{padding:1.5rem}.stats{grid-template-columns:1fr}.ring-btn{font-size:1.1rem;border-radius:10px}}@media (min-width: 600px){:root{--container-size: 240px}}