:root{--ink:#070816;--ink-soft:#11142e;--panel:#1a2052;--panel-2:#232a6a;--panel-3:#2e3785;--paper:#f6f2e6;--muted:#aab1dc;--dim:#7a82b8;--yellow:#ffd23f;--orange:#ff8a3d;--cyan:#3ee6ff;--pink:#ff5d8f;--green:#53e08a;--purple:#a58bff;--red:#ff4d5e;--border:2.5px solid var(--ink);--shadow:4px 4px 0 var(--ink);--shadow-sm:2px 2px 0 var(--ink);--radius:14px;--radius-sm:9px;--font-display:"Bungee", "Arial Black", system-ui, sans-serif;--font-ui:"Nunito", system-ui, -apple-system, "Segoe UI", sans-serif}*{box-sizing:border-box;margin:0;padding:0}html,body{width:100%;height:100%;font-family:var(--font-ui);color:var(--paper);-webkit-font-smoothing:antialiased;background:#04051a;overflow:hidden}#hud-overlay{-webkit-user-select:none;user-select:none}#hud-overlay input[type=text]{-webkit-user-select:text;user-select:text}#canvas-container{z-index:1;touch-action:none;position:absolute;inset:0}.sr-only{clip:rect(0 0 0 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var(--ink);color:var(--cyan);font-family:var(--font-display);letter-spacing:.8px;cursor:pointer;border-radius:999px;align-items:center;gap:6px;padding:2px 10px;font-size:10px;display:inline-flex}.sim-clock{font-variant-numeric:tabular-nums;align-items:center;gap:10px;font-weight:900;display:flex}.sim-date{font-family:var(--font-display);color:var(--yellow);text-shadow:2px 2px 0 var(--ink);font-size:14px}.sim-warp{background:var(--ink-soft);border:2px solid var(--ink);color:var(--cyan);border-radius:999px;padding:1px 8px;font-size:12px}.bottombar-content{justify-content:space-between;align-items:center;gap:18px;display:flex}.hud-bottombar.minimized{border-radius:999px;padding:6px 12px;left:50%;right:auto;transform:translate(-50%)}.hud-bottombar.minimized 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.val{color:var(--cyan)}.speed-factor{color:var(--dim);font-variant-numeric:tabular-nums;font-size:10.5px;font-weight:800}.g-header span{color:var(--green)}.speed-quick-buttons{flex-wrap:wrap;gap:4px;display:flex}.speed-chip{background:var(--panel-2);border:2px solid var(--ink);color:var(--paper);font-family:var(--font-ui);cursor:pointer;border-radius:999px;padding:3px 9px;font-size:12px;font-weight:900}.speed-chip:hover{background:var(--panel-3)}.speed-chip.active{background:var(--cyan);color:var(--ink)}.physics-modifiers{align-items:center;gap:18px;display:flex}.collision-selector{align-items:center;gap:8px;display:flex}.collision-selector label{letter-spacing:.6px;color:var(--dim);font-size:11px;font-weight:900}.floating-hud-btn{background:var(--yellow);height:38px;color:var(--ink);font-family:var(--font-display);cursor:pointer;z-index:1000;align-items:center;gap:6px;padding:0 14px;font-size:12px;display:flex;position:fixed;top:12px;right:12px}#hud-overlay.hud-all-hidden 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var(--ink);border-radius:50%;width:9px;height:9px}.celestial-label.selected{background:var(--yellow);z-index:1}.toast-region{z-index:1200;pointer-events:none;flex-direction:column;align-items:center;gap:8px;display:flex;position:fixed;bottom:140px;left:50%;transform:translate(-50%)}.toast{pointer-events:auto;align-items:center;gap:12px;padding:8px 10px 8px 14px;font-size:13.5px;font-weight:800;animation:.18s ease-out toast-in;display:flex}.toast.leaving{opacity:0;transition:opacity .25s,transform .25s;transform:translateY(6px)}.toast-action{background:var(--yellow);color:var(--ink);border:2px solid var(--ink);font-family:var(--font-ui);cursor:pointer;border-radius:999px;padding:3px 11px;font-weight:900}@keyframes toast-in{0%{opacity:0;transform:translateY(8px)scale(.96)}}#app-loading{z-index:2000;background:#04051a;place-items:center;transition:opacity 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12px;bottom:8px;left:8px;right:8px}.bottombar-content{flex-direction:column;align-items:stretch;gap:8px}.time-controls,.physics-modifiers{justify-content:space-between;gap:8px}.toast-region{top:calc(var(--topbar-bottom,160px) + 60px);width:calc(100vw - 32px);bottom:auto}}@media (width<=680px){.brand-text .title{font-size:15px}.brand-text .subtitle,.topbar-quick-actions .btn-label{display:none}.topbar-quick-actions .btn{padding:5px 9px;font-size:15px}.collision-selector label{clip:rect(0 0 0 0);width:1px;height:1px;position:absolute;overflow:hidden}.collision-selector .select{max-width:150px}.btn-group .btn{padding:4px 9px;font-size:11.5px}.artifacts-dock{max-width:170px;padding:7px 9px}.time-controls{flex-wrap:wrap}.time-icon-btn{width:38px;height:38px}#btn-pause{width:42px;height:42px}.speed-slider-wrap,.g-control{flex:110px;width:auto}.speed-chip{padding:2px 6px;font-size:11px}.physics-modifiers{flex-wrap:wrap}.sim-date{font-size:12px}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition:none!important;animation:none!important}}