.shader-perf-prompt{position:fixed;left:50%;bottom:max(16px,env(safe-area-inset-bottom));transform:translate(-50%);z-index:9999;width:min(420px,calc(100vw - 32px));padding:14px 16px;border-radius:14px;background:#fff;color:#111317;box-shadow:0 10px 30px #00000040;font-size:13px;line-height:1.4}[data-student-theme=dark] .shader-perf-prompt{background:#1b1e24;color:#f4f5f7}.shader-perf-prompt__title{font-weight:700;margin-bottom:4px}.shader-perf-prompt__body{opacity:.75}.shader-perf-prompt__actions{display:flex;justify-content:flex-end;gap:8px;margin-top:12px}.shader-perf-prompt__btn{padding:7px 12px;border-radius:9px;font-weight:600;font-size:12px;background:transparent;color:inherit;border:1px solid currentColor;opacity:.8}.shader-perf-prompt__btn--primary{border-color:transparent;opacity:1}.student-shader-canvas{position:fixed;top:0;left:0;width:100vw;height:100vh;height:100lvh;z-index:0;pointer-events:none}