:root{color-scheme:dark;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100vh;background:#0a0a0a;color:#fafafa}.mirror-draw{min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:1rem;-webkit-user-select:none;user-select:none}.header{text-align:center;margin-bottom:.75rem}.header h1{margin:0;font-size:1.6rem;font-weight:700;letter-spacing:-.02em;background:linear-gradient(135deg,#60a5fa,#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.stats-bar{display:flex;gap:2rem;align-items:center;margin-bottom:.75rem;font-size:.9rem}.stat{display:flex;align-items:center;gap:.4rem}.stat-label{color:#ffffff80}.stat-value{font-weight:600;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.symmetry-meter{width:180px;height:10px;background:#ffffff14;border-radius:5px;overflow:hidden;position:relative}.symmetry-fill{height:100%;border-radius:5px;transition:width .3s ease,background .3s ease}.canvas-container{position:relative;border:1px solid rgba(255,255,255,.1);border-radius:.75rem;overflow:hidden;background:#111}canvas{display:block;cursor:crosshair}.divider{position:absolute;top:0;left:50%;transform:translate(-50%);width:2px;height:100%;background:#ffffff26;pointer-events:none;z-index:2}.side-label{position:absolute;top:8px;font-size:.7rem;letter-spacing:.15em;text-transform:uppercase;color:#ffffff4d;pointer-events:none;z-index:3}.side-label.left{left:12px}.side-label.right{right:12px}.controls{display:flex;gap:.75rem;margin-top:.75rem;align-items:center}.btn{padding:.5rem 1.25rem;border:1px solid rgba(255,255,255,.15);border-radius:.5rem;background:#ffffff0d;color:#fafafa;font-size:.85rem;cursor:pointer;transition:background .2s,border-color .2s}.btn:hover{background:#ffffff1a;border-color:#ffffff40}.btn-primary{background:#60a5fa33;border-color:#60a5fa66}.btn-primary:hover{background:#60a5fa4d}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:#000000bf;z-index:10}.modal{text-align:center;padding:2.5rem;border:1px solid rgba(255,255,255,.1);border-radius:1rem;background:#161616;max-width:360px}.modal h2{margin:0 0 .5rem;font-size:1.4rem}.modal p{color:#fff9;margin:0 0 1.25rem;font-size:.9rem}.modal .score-display{font-size:2.2rem;font-weight:700;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;margin:.5rem 0}.modal .btn{font-size:1rem;padding:.6rem 2rem}.fade-warning{position:absolute;bottom:12px;left:50%;transform:translate(-50%);font-size:.75rem;color:#ffc832b3;pointer-events:none;z-index:3;animation:pulse 1.5s ease-in-out infinite}@keyframes pulse{0%,to{opacity:.5}50%{opacity:1}}