:root{color:#f4f7fb;background:#141618;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button{font:inherit}.app-shell{min-height:100vh;padding:22px;background:linear-gradient(135deg,rgba(47,111,237,.22),transparent 34%),linear-gradient(315deg,rgba(242,86,86,.18),transparent 36%),#141618}.top-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:14px}h1{margin:0;font-size:clamp(2rem,3.4vw,3.8rem);line-height:.92}p{margin:8px 0 0;color:#aeb8c8}.match-stats{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}.stat,.target-readout{min-width:94px;padding:10px 12px;border:1px solid #303741;border-radius:8px;background:#16191dc7}.stat span,.target-readout span,.board-meta{display:block;color:#8792a1;font-size:.78rem}.stat strong,.target-readout strong{display:block;margin-top:3px;font-size:1rem}.play-layout{display:grid;grid-template-columns:minmax(280px,440px) minmax(360px,1fr);gap:16px;align-items:start}.primary-panel{min-width:0}.side-panel{display:grid;grid-template-columns:minmax(220px,320px) minmax(140px,1fr);gap:10px;align-items:stretch;margin-bottom:10px}.action-row{display:flex;gap:8px}.action-button,.icon-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;border:1px solid #3b4653;border-radius:8px;color:#f4f7fb;background:#20262d;cursor:pointer}.action-button{flex:1;padding:0 14px}.icon-button{width:40px}.action-button:disabled{color:#707b88;cursor:not-allowed}.icon-button-active{border-color:#f2cc4d;color:#f2cc4d}.board-card{min-width:0;border:1px solid #2d343d;border-radius:8px;padding:8px;background:#13161ae6}.board-card-self{padding:10px}.board-card-self .board-grid{max-height:calc(100vh - 180px)}.board-card-out{opacity:.48}.board-header{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:42px;margin-bottom:8px}.board-name{max-width:18ch;overflow:hidden;color:#eef3fa;font-weight:700;text-overflow:ellipsis;white-space:nowrap}.board-grid{display:grid;width:100%;aspect-ratio:13 / 17;border:1px solid #3a414c;background:#090b0d}.cell{display:grid;place-items:center;min-width:0;min-height:0;border-right:1px solid rgba(255,255,255,.04);border-bottom:1px solid rgba(255,255,255,.04)}.cell-snake{background:#31c46f}.cell-head{background:#a2f06d}.cell-food{background:#f2cc4d}.cell-effect{color:#151515;background:#f05d5e}.opponent-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:8px;max-height:calc(100vh - 150px);overflow-y:auto;padding-right:4px}.opponent-grid .board-card{padding:5px}.opponent-grid .board-name{max-width:9ch;font-size:.76rem}.opponent-grid .board-header{min-height:30px;margin-bottom:5px}.opponent-grid .board-meta{font-size:.68rem}.opponent-grid .icon-button{width:30px;min-height:30px}.empty-state{display:grid;place-items:center;gap:10px;min-height:420px;border:1px dashed #3c4652;border-radius:8px;color:#aeb8c8}@media (max-width: 780px){.app-shell{padding:14px}.play-layout{grid-template-columns:1fr}.top-bar{display:grid}.match-stats{justify-content:stretch}.stat{flex:1}.side-panel{grid-template-columns:1fr}.opponent-grid{max-height:none;overflow:visible}}