:root{color-scheme:dark;font-family:Courier New,Consolas,Liberation Mono,monospace;line-height:1.5}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100vh;background:#040c07;color:#b0c8b0}.shell{min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:1.25rem 1rem 2rem;gap:.85rem}.header{text-align:center}.header h1{font-size:1.6rem;font-weight:700;color:#0f8;text-shadow:0 0 24px rgba(0,255,136,.25);letter-spacing:.08em}.header-icon{font-style:normal}.subtitle{font-size:.78rem;color:#3a7a4a;margin-top:.15rem}.info-bar{display:flex;justify-content:space-between;align-items:baseline;width:100%;max-width:520px;font-size:.82rem}.level-info{display:flex;gap:.6rem;align-items:baseline}.level-num{color:#0d7;font-weight:700}.level-name{color:#4a8a5a}.moves{color:#6a7a5a}.status-bar{width:100%;max-width:520px;min-height:2.2rem}.status{text-align:center;padding:.4rem .75rem;border-radius:4px;font-size:.82rem;font-weight:700;letter-spacing:.04em}.status-idle{background:#00ff880a;border:1px solid rgba(0,255,136,.1);color:#3a7a4a}.status-won{background:#00ff8814;border:1px solid rgba(0,255,136,.25);color:#0f8;animation:pulse-glow 1.4s ease-in-out infinite}.status-crossed{background:#ff28281a;border:1px solid rgba(255,60,60,.3);color:#f44;animation:pulse-red .5s ease-in-out infinite}.board-wrap{border:2px solid #153a22;border-radius:6px;overflow:hidden;box-shadow:0 0 40px #00ff880a,inset 0 0 60px #0000004d;background:#081a10}.board{display:block;max-width:100%;height:auto}.controls{display:flex;gap:.5rem}.btn{background:#0f2a1a;color:#0d7;border:1px solid #1a4a2a;padding:.45rem 1rem;border-radius:4px;cursor:pointer;font-family:inherit;font-size:.8rem;font-weight:600;letter-spacing:.03em;transition:background .15s,border-color .15s}.btn:hover:not(:disabled){background:#1a4a2a;border-color:#0f8}.btn:active:not(:disabled){background:#0f8;color:#040c07}.btn:disabled{opacity:.25;cursor:default}.btn-restart{color:#da0;border-color:#3a3010}.btn-restart:hover:not(:disabled){border-color:#da0}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;z-index:100;animation:fadeIn .3s ease}.overlay-win{background:#000c06e0}.overlay-lose{background:#0c0000e0}.overlay-card{text-align:center;padding:2rem 2.5rem;border-radius:8px;max-width:340px}.overlay-card-win{background:#001e0ff2;border:2px solid #00ff88;box-shadow:0 0 50px #00ff8826}.overlay-card-win h2{color:#0f8;font-size:1.4rem;margin-bottom:.4rem}.overlay-card-win p{color:#5aaa6a;font-size:.85rem}.overlay-card-lose{background:#1e0505f2;border:2px solid #ff4444;box-shadow:0 0 50px #ff00001f}.overlay-card-lose h2{color:#f44;font-size:1.4rem;margin-bottom:.4rem}.overlay-card-lose p{color:#a55;font-size:.85rem}.btn-next{margin-top:1rem;background:#0f8;color:#040c07;border:none;font-weight:700}.btn-next:hover{background:#0c6}.btn-retry{margin-top:1rem;background:#f44;color:#fff;border:none;font-weight:700}.btn-retry:hover{background:#d22}.all-clear{color:#0f8;font-size:.9rem;margin-top:.75rem}@keyframes pulse-glow{0%,to{opacity:1}50%{opacity:.7}}@keyframes pulse-red{0%,to{opacity:1}50%{opacity:.55}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}