.config-menu{background:var(--panel-bg);padding:2rem;border-radius:8px;border:1px solid var(--border-color);box-shadow:0 4px 15px #00000080;max-width:400px;width:100%}.config-menu h2{margin-top:0;text-align:center;color:var(--path-color);text-shadow:var(--accent-glow)}.difficulty-presets{display:flex;justify-content:space-between;margin-bottom:1.5rem}.preset-btn{flex:1;margin:0 .25rem}.preset-btn.active{background-color:var(--path-color);color:#fff;border-color:var(--path-color);box-shadow:var(--accent-glow)}.config-summary{background:#0003;padding:1rem;border-radius:4px;margin-bottom:1.5rem}.config-summary p{margin:.25rem 0}.time-limit{font-weight:700;color:var(--danger-color)}.custom-sliders label{display:block;margin-bottom:1rem}.custom-sliders input[type=range]{width:100%;margin-top:.5rem}.start-btn{width:100%;padding:.75rem;font-size:1.1rem;background-color:var(--path-color);color:#fff;border:none;font-weight:700}.canvas-container{width:100vw;flex:1;display:flex;justify-content:center;align-items:center;overflow:hidden;background-color:var(--bg-color);touch-action:none}canvas{cursor:crosshair;box-shadow:0 0 20px #00000080,inset var(--accent-glow)}.timer-container{position:relative;top:0;left:0;width:100%;height:8px;background-color:var(--border-color);z-index:1000}.timer-fill{height:100%;background-color:var(--path-color);box-shadow:var(--accent-glow);transition:width 1s linear,background-color .3s ease}.timer-fill.critical{background-color:var(--danger-color);box-shadow:0 0 15px var(--danger-color);animation:pulse-critical .5s infinite alternate}.timer-text{position:absolute;top:12px;left:50%;transform:translate(-50%);font-size:1.5rem;font-weight:700;color:var(--text-color);text-shadow:0 0 5px #000;pointer-events:none}@keyframes pulse-critical{0%{opacity:.7}to{opacity:1}}:root{--bg-color: #0d0d12;--text-color: #e0e0e0;--panel-bg: rgba(20, 20, 30, .85);--border-color: #333344;--accent-glow: 0 0 10px #00ffcc;--path-color: #00ffcc;--wall-color: #222233;--danger-color: #ff3366;--btn-bg: #1a1a24;--btn-hover: #2a2a35}[data-theme=light]{--bg-color: #f0f0f5;--text-color: #1a1a24;--panel-bg: rgba(255, 255, 255, .9);--border-color: #ccccee;--accent-glow: 0 0 8px #0055ff;--path-color: #0055ff;--wall-color: #ddddf0;--danger-color: #ee2244;--btn-bg: #e0e0ed;--btn-hover: #d0d0e0}body{margin:0;display:flex;justify-content:center;align-items:center;min-width:320px;min-height:100vh;background-color:var(--bg-color);color:var(--text-color);font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;transition:background-color .3s ease,color .3s ease}button{background-color:var(--btn-bg);border:1px solid var(--border-color);color:var(--text-color);padding:.5rem 1rem;cursor:pointer;transition:all .2s ease;font-family:inherit;font-weight:500;border-radius:4px}button:hover{background-color:var(--btn-hover);box-shadow:var(--accent-glow)}#root{width:100%;height:100vh;display:flex;justify-content:center}.app-container{display:flex;flex-direction:column;justify-content:flex-start;align-items:center;width:100%;height:100%}.app-header{display:flex;justify-content:flex-end;align-items:center;padding:.5rem 1rem;width:100%;box-sizing:border-box;height:50px;z-index:100}.menu-container{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;width:100%;text-align:center;z-index:10}