*{box-sizing:border-box}html,body{margin:0;width:100%;min-width:320px;min-height:100%;overflow:hidden;background:#030612;color:#f8fafc;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}body{min-height:100vh;min-height:100dvh}.game-shell{display:grid;width:100vw;height:100vh;height:100dvh;place-items:center;background:radial-gradient(circle at 50% 50%,rgba(16,37,70,.68),transparent 58%),#030612}canvas{display:block;width:min(100vw,calc(100vh * 16 / 9));width:min(100vw,calc(100dvh * 16 / 9));height:min(100vh,56.25vw);height:min(100dvh,56.25vw);aspect-ratio:16 / 9;background:#050713;image-rendering:auto;touch-action:manipulation}.editor-mode{overflow:hidden}.editor-mode .game-shell{width:calc(100vw - 250px);place-items:center}.editor-mode canvas{width:min(calc(100vw - 270px),calc(100dvh * 16 / 9));cursor:grab}.editor-mode canvas:active{cursor:grabbing}.parts-panel{position:fixed;top:0;right:0;bottom:0;z-index:10;display:flex;width:250px;flex-direction:column;gap:12px;padding:14px;border-left:1px solid rgba(148,163,184,.3);background:#080d1cf5;color:#e5edf8}.parts-panel h1{margin:0;font-size:18px;line-height:1.25}.editor-status{margin:0;color:#93c5fd;font-size:13px;font-weight:800}.part-list{display:grid;gap:8px;overflow-y:auto}.part-item,.editor-actions button,.editor-actions a{min-height:38px;border:1px solid rgba(147,197,253,.38);border-radius:7px;background:#142039;color:#e0f2fe;font:inherit;font-size:13px;font-weight:800;text-align:left;text-decoration:none}.part-item{padding:8px 10px;cursor:grab}.editor-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:auto}.editor-actions button,.editor-actions a{display:grid;place-items:center;cursor:pointer;text-align:center}.editor-actions a{grid-column:1 / -1}