:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;font:16px/1.5 system-ui,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{color:#e8e9ec;background:radial-gradient(circle at 50% 0,#23262d 0%,#14161a 60%,#0b0c0e 100%)}.app-root{justify-content:center;align-items:center;min-height:100%;padding:24px;display:flex}.screen{text-align:center;flex-direction:column;align-items:center;gap:16px;width:100%;max-width:460px;display:flex}h1{margin:0;font-size:1.6rem}.subtitle{color:#a4a8b0;margin:-8px 0 4px}.dropzone{aspect-ratio:1;cursor:pointer;color:#8b8f98;background:#1a1c20;border:2px dashed #454952;border-radius:16px;justify-content:center;align-items:center;width:100%;transition:border-color .15s;display:flex;overflow:hidden}.dropzone:hover{border-color:#7c8592}.dropzone-preview{object-fit:cover;width:100%;height:100%}.primary-btn{color:#16181b;cursor:pointer;background:linear-gradient(#f2f4f7,#c7cbd1);border:none;border-radius:999px;padding:12px 28px;font-size:1rem;font-weight:600}.primary-btn:disabled{opacity:.4;cursor:not-allowed}.back-btn{color:#a4a8b0;cursor:pointer;background:0 0;border:none;align-self:flex-start;padding:4px 0;font-size:.95rem}.level-preview{object-fit:cover;border:1px solid #2b2f35;border-radius:12px;width:160px;height:160px}.level-list{flex-direction:column;gap:10px;width:100%;display:flex}.level-btn{color:#e8e9ec;cursor:pointer;background:#1a1c20;border:1px solid #2b2f35;border-radius:12px;justify-content:space-between;align-items:center;padding:14px 18px;font-size:1rem;display:flex}.level-btn:hover{border-color:#7c8592}.level-meta{color:#8b8f98;font-size:.85rem}.game-screen{max-width:420px}.game-header{justify-content:space-between;align-items:center;width:100%;display:flex}.progress-label{color:#a4a8b0;font-variant-numeric:tabular-nums}.board-wrap{aspect-ratio:1;background:#0b0c0e;border:1px solid #2b2f35;border-radius:12px;width:100%;position:relative;overflow:hidden}.board-canvas{cursor:pointer;touch-action:manipulation;width:100%;height:100%;display:block}.board-loading{color:#a4a8b0;background:#0b0c0ed9;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.win-overlay{background:#0b0c0e8c;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.win-card{background:#1a1c20;border:1px solid #2b2f35;border-radius:16px;flex-direction:column;align-items:center;gap:14px;padding:28px 36px;display:flex}.win-card h2{margin:0;font-size:1.8rem}