:root{--hud-bg:#0e0f1094;--hud-line:#ffffff17;--hud-text:#ece7de;--hud-dim:#a8a196;--hud-accent:#e3a55a;--hud-font:-apple-system, "Segoe UI", system-ui, sans-serif;--hud-mono:ui-monospace, "SF Mono", Menlo, Consolas, monospace}*{box-sizing:border-box}html,body{height:100%;color:var(--hud-text);font-family:var(--hud-font);background:#0b0c0d;margin:0;overflow:hidden}canvas#scene{cursor:crosshair;outline:none;width:100vw;height:100vh;display:block;position:fixed;inset:0}.hud{background:var(--hud-bg);border:1px solid var(--hud-line);-webkit-backdrop-filter:blur(10px)saturate(1.1);-webkit-user-select:none;user-select:none;z-index:2;border-radius:8px;width:248px;padding:10px 12px 11px;font-size:12px;line-height:1.35;position:fixed;top:12px;left:12px}.hud-head{justify-content:space-between;align-items:baseline;margin-bottom:8px;display:flex}.hud-title{letter-spacing:.02em;font-weight:600}.hud-seed{font-family:var(--hud-mono);color:var(--hud-dim);font-size:11px}.hud-time{grid-template-columns:auto 1fr auto;align-items:center;gap:8px;margin-bottom:8px;display:grid}.hud-clock{font-family:var(--hud-mono);font-variant-numeric:tabular-nums;min-width:44px;font-size:15px}.hud-slider{width:100%;accent-color:var(--hud-accent);margin:0}.hud-stats{border-top:1px solid var(--hud-line);grid-template-columns:auto 1fr;gap:2px 10px;margin:0 0 9px;padding-top:7px;display:grid}.hud-stats dt{color:var(--hud-dim);white-space:nowrap}.hud-stats dd{text-align:right;font-family:var(--hud-mono);font-variant-numeric:tabular-nums;white-space:nowrap;margin:0;font-size:11.5px}.hud-controls{gap:6px;display:flex}.hud-seg{border:1px solid var(--hud-line);border-radius:6px;flex:1;display:flex;overflow:hidden}.hud-btn{appearance:none;color:var(--hud-text);font:inherit;cursor:pointer;background:#ffffff0a;border:0;padding:5px 8px;font-size:11.5px}.hud-seg .hud-btn{border-right:1px solid var(--hud-line);flex:1}.hud-seg .hud-btn:last-child{border-right:0}.hud-btn:hover{background:#ffffff1a}.hud-btn.active{background:var(--hud-accent);color:#1b1408;font-weight:600}.hud-btn:focus-visible{outline:2px solid var(--hud-accent);outline-offset:-2px}.hud-pause,.hud-reset{border:1px solid var(--hud-line);border-radius:6px}.hud-pause{width:28px;padding:3px 0;font-size:10px}.hint{background:var(--hud-bg);border:1px solid var(--hud-line);max-width:calc(100vw - 24px);color:var(--hud-dim);text-align:center;white-space:nowrap;text-overflow:ellipsis;z-index:2;pointer-events:none;border-radius:6px;padding:6px 12px;font-size:11.5px;transition:opacity .6s;position:fixed;bottom:12px;left:50%;overflow:hidden;transform:translate(-50%)}.hint b{color:var(--hud-text);font-weight:600}.hint.dim{opacity:.35}.loading{color:var(--hud-dim);z-index:5;background:#0b0c0d;place-items:center;font-size:13px;transition:opacity .5s;display:grid;position:fixed;inset:0}.loading b{color:var(--hud-text);font-weight:600}.loading.done{opacity:0;pointer-events:none}.fatal{color:#f0b8a0;text-align:center;max-width:480px;line-height:1.5}@media (max-width:560px){.hud{width:auto;top:8px;left:8px;right:8px}.hint{white-space:normal}}