*{margin:0;padding:0;box-sizing:border-box;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}body,html{width:100%;height:100%;overflow:hidden;background-color:#050505}#canvas-container{width:100%;height:100%;display:block}#ui-overlay{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;display:flex;flex-direction:column;justify-content:space-between;padding:20px}.controls-hint{background:#0f172ad9;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.1);color:#f8fafc;padding:12px 24px;border-radius:9999px;font-size:14px;align-self:center;pointer-events:auto}.vehicle-selector-panel{position:absolute;top:20px;left:20px;background:#0f172ad9;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.1);padding:12px 18px;border-radius:12px;color:#fff;pointer-events:auto;display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:600}.vehicle-selector-panel select{background:#1e293b;color:#fff;border:1px solid #475569;padding:8px 12px;border-radius:8px;outline:none;cursor:pointer}.action-prompt{position:absolute;bottom:30px;left:50%;transform:translate(-50%);background:#f59e0b;color:#000;padding:14px 28px;border-radius:12px;font-weight:800;font-size:16px;display:none;align-items:center;gap:10px}.hud-panel{position:absolute;bottom:30px;right:30px;background:#0f172ad9;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1);padding:16px 24px;border-radius:16px;color:#fff;display:flex;flex-direction:column;align-items:flex-end}.speedometer{font-size:32px;font-weight:900;color:#38bdf8}.speed-unit{font-size:12px;color:#94a3b8;font-weight:600}.vehicle-status{font-size:13px;color:#10b981;font-weight:700;margin-top:4px}