:root{color-scheme:dark;--bg:#111512;--panel:#1a201a;--raised:#242d22;--line:#354030;--line-soft:#293225;--ink:#e6ebdc;--muted:#a1ad94;--faint:#718064;--sand:#e2bf7d;--sand-dim:#403927;--radius:8px;font-family:Inter,"Segoe UI",Arial,sans-serif;font-synthesis:none}
*{box-sizing:border-box}
body{margin:0;width:100%;height:100vh;height:100dvh;display:flex;flex-direction:column;background:var(--bg);color:var(--ink);overflow:hidden;font-size:13px;-webkit-font-smoothing:antialiased}
button,input,select{font:inherit}button{cursor:pointer}button,select{-webkit-tap-highlight-color:transparent}button:disabled,input:disabled,select:disabled{cursor:wait;opacity:.4}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,canvas:focus-visible{outline:2px solid var(--sand);outline-offset:3px}
svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex:none}a{color:inherit;text-decoration:none}[hidden]{display:none!important}
.icon-library{position:absolute;width:0;height:0;overflow:hidden}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.mobile-only{display:none!important}
.app-header{height:76px;flex:none;padding:0 30px;display:flex;align-items:center;gap:30px;border-bottom:1px solid var(--line-soft)}
.wordmark{display:flex;align-items:center;gap:13px;white-space:nowrap;font-size:19px;font-weight:700;letter-spacing:2.1px}.wordmark-slash{color:var(--faint);font-weight:400;margin:0 5px}.wordmark-engine{font-weight:400;color:#bdc8b0;font-size:17px;letter-spacing:2px}
.sand-mark{width:27px;height:25px;position:relative;display:block;color:var(--sand)}.sand-mark i{display:block;position:absolute;width:6px;height:6px;background:currentColor}.sand-mark i:nth-child(1){left:8px;top:0}.sand-mark i:nth-child(2){left:8px;top:8px}.sand-mark i:nth-child(3){left:16px;top:8px}.sand-mark i:nth-child(4){left:0;top:16px}.sand-mark i:nth-child(5){left:8px;top:16px}.sand-mark i:nth-child(6){left:16px;top:16px}
.header-caption{font-size:12px;color:var(--muted);letter-spacing:.15px}.header-actions{margin-left:auto;display:flex;align-items:center;gap:8px}.header-divider{width:1px;height:21px;background:var(--line);margin:0 4px}
.button{min-height:36px;display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:7px 11px;background:var(--raised);border:1px solid var(--line);border-radius:6px;color:var(--ink);font-size:12px;font-weight:500;white-space:nowrap;transition:background .12s,border-color .12s,color .12s}
.button:hover:not(:disabled){background:#333e2d;border-color:#5b694e}.button.quiet{border-color:transparent;background:transparent;color:#adbba0}.button.quiet:hover:not(:disabled){background:var(--raised);color:var(--ink);border-color:transparent}.button.primary{background:var(--sand);border-color:var(--sand);color:#29261c;font-weight:600;min-width:94px}.button.primary:hover:not(:disabled){background:#f0cd91;border-color:#f0cd91}.button.icon-button{padding:7px;min-width:36px}.button.compact{font-size:11px;gap:6px;padding:5px 8px;min-height:30px}.button.compact svg{width:15px;height:15px}.button[aria-pressed="true"]{color:var(--sand);background:var(--sand-dim);border-color:#806c44}
.guide-button{color:#d8c89e;border-color:#554b34;background:#29291f}.count-badge{font-family:"SFMono-Regular",Consolas,monospace;font-size:9px;color:#acb89e;background:#30382a;border-radius:4px;padding:3px 5px;font-weight:400}.guide-button .count-badge{color:#d9c18d;background:#443c29;margin-left:2px}
.app-main{display:grid;grid-template-columns:232px minmax(0,1fr);gap:24px;flex:1;min-height:0;padding:22px 30px 0}.materials{display:flex;flex-direction:column;min-height:0;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);overflow:hidden}
.palette-heading{padding:18px 14px 15px;display:flex;align-items:center;justify-content:space-between;gap:8px;flex:none}.palette-heading h1{display:flex;align-items:center;gap:7px;font-size:13px;font-weight:600;letter-spacing:.1px;margin:0}.tiny-label{color:var(--muted);font-size:8px;letter-spacing:1.3px;font-weight:500;white-space:nowrap}.palette-eyebrow{font-size:7px;color:var(--faint);letter-spacing:1px}
.palette-filters{padding:0 12px 9px;flex:none}.search-field{display:flex;align-items:center;gap:8px;border:1px solid #3b4732;background:#131a12;border-radius:5px;padding:0 9px;min-width:0}.search-field>svg{width:14px;height:14px;color:#899a78}.search-field input{width:100%;min-width:0;min-height:34px;padding:7px 0;border:0;background:transparent;color:var(--ink);font-size:11px;outline-offset:5px}.search-field input::placeholder{color:#7d8d6d}.search-field input::-webkit-search-cancel-button{display:none}.search-clear{background:transparent;border:0;color:#9dad89;min-width:24px;min-height:28px;padding:1px;font-size:21px;line-height:1;flex:none}.search-clear:hover{color:var(--ink)}
select{color:#b6c2a8;border:1px solid var(--line);border-radius:5px;background:#20291c;min-height:32px;font-size:11px;padding:6px 8px;cursor:pointer}select option{background:var(--panel)}#category-filter{width:100%;margin-top:8px}.filter-summary{display:flex;justify-content:space-between;gap:5px;font-size:8px;color:var(--faint);margin-top:12px}.filter-summary>span:last-child{font-size:6px;letter-spacing:.65px}
.material-results{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:5px;align-content:start;overflow:auto;min-height:64px;flex:1;padding:0 10px 12px;scrollbar-width:thin;scrollbar-color:#47553b transparent;overscroll-behavior:contain}.material-button{display:flex;align-items:center;gap:7px;width:100%;min-width:0;min-height:36px;padding:7px;background:#222b1e;border:1px solid transparent;border-radius:5px;color:#bfcaaf;font-size:10px;text-align:left}.material-button>span:last-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.material-button:hover:not(:disabled){background:#303b28;color:var(--ink)}.material-button[aria-pressed="true"]{color:var(--sand);background:#393426;border-color:#927948}.swatch{display:inline-block;width:9px;height:9px;border-radius:2px;background:var(--swatch,#e2bf7d);flex:none;box-shadow:inset 0 0 0 1px #ffffff20}
.empty-state{padding:16px;color:var(--muted);font-size:12px;line-height:1.7}.materials>.empty-state{font-size:11px;margin:0;flex:1}.material-detail{margin:0 14px;padding:16px 0 13px;border-top:1px solid var(--line);flex:none}.selected-heading{display:flex;align-items:center;gap:8px}.selected-heading strong{font-size:12px;font-weight:600}.selected-heading .tiny-label{margin-left:auto;font-size:7px;letter-spacing:.6px;text-transform:uppercase;color:var(--faint)}.material-detail p{font-size:11px;line-height:1.7;color:var(--muted);margin:9px 0;min-height:37px;max-height:76px;overflow:auto}.text-button{background:transparent;border:0;padding:0;color:#c5b58d;text-align:left;font-size:10px;line-height:1.6}.text-button:hover{color:var(--sand);text-decoration:underline;text-underline-offset:3px}.material-detail .text-button{font-size:10px}.material-detail .text-button span{margin-left:5px}.palette-note{font-size:8px;color:var(--faint);padding:13px 14px;background:#161d14;display:flex;align-items:center;gap:7px;flex:none;border-top:1px solid var(--line-soft);white-space:nowrap}.note-star{font-size:15px;color:#bfa66c}
.workspace{display:flex;flex-direction:column;min-width:0;min-height:0}.workspace-header{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:34px;flex:none;margin:-4px 0 0}.world-title{display:flex;align-items:center;gap:13px;min-width:0}#scenario{background:transparent;border-color:transparent;color:#d7dfcb;font-size:14px;font-weight:500;min-width:0;max-width:240px;padding-left:0}.scene-actions{display:flex;align-items:center;gap:4px}.running-state{font-size:10px;display:flex;align-items:center;gap:6px;color:var(--muted);margin-right:12px}.status-dot,.engine-dot{width:5px;height:5px;background:#94ac7e;border-radius:50%;display:inline-block;flex:none}.running-state[data-paused="true"] .status-dot{background:var(--sand)}
.experiment-hint{display:flex;align-items:baseline;gap:9px;min-height:27px;margin:1px 0 7px;flex:none;min-width:0}.experiment-hint .tiny-label{font-size:7px;color:#b5a375;letter-spacing:1px}.experiment-hint p{margin:0;color:#8e9f7d;font-size:11px;line-height:1.6;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.canvas-toolbar{display:flex;align-items:center;justify-content:space-between;gap:15px;flex:none;margin-bottom:11px}.tool-controls{display:flex;align-items:center;gap:4px;min-width:0}.tool-button{background:transparent;border-color:transparent;font-size:10px;gap:6px;min-height:33px;padding:6px 9px;color:#aabb94}.tool-button svg{width:15px;height:15px}.tool-separator{width:1px;height:17px;background:var(--line);margin:0 3px}.tool-button[data-tool="heat"][aria-pressed="true"]{color:#f3ad7b;background:#442c20;border-color:#9e6844}.tool-button[data-tool="cool"][aria-pressed="true"]{color:#9ecce8;background:#233943;border-color:#4d859a}.view-tabs{display:flex;flex:none;border:1px solid var(--line);border-radius:5px;padding:2px;gap:2px}.view-tabs button{border:0;border-radius:3px;background:transparent;color:#829673;font-size:10px;min-height:27px;padding:4px 10px;display:flex;align-items:center;gap:5px}.view-tabs button[aria-pressed="true"]{background:#323d29;color:#d9e2cd}.heat-dot{width:7px;height:7px;border-radius:50%;background:linear-gradient(135deg,#f2b378,#a55744)}
.viewport{flex:1;min-height:160px;min-width:0;position:relative;border:1px solid #435237;border-radius:var(--radius);overflow:hidden;background:#0c110d;isolation:isolate;touch-action:none}#sand-canvas{position:absolute;inset:0;display:block;width:100%;height:100%;outline-offset:-3px;touch-action:none;image-rendering:pixelated;cursor:none}#sand-canvas.pan-mode{cursor:grab}#sand-canvas.panning{cursor:grabbing}#sand-canvas.inspect-mode{cursor:crosshair}.brush-cursor{position:absolute;pointer-events:none;border:1px solid #e8d6a6a6;border-radius:50%;transform:translate(-50%,-50%);box-shadow:0 0 0 1px #0004;background:#e8d6a608;z-index:2}.brush-cursor[data-tool="heat"]{border-color:#ffa169;background:#f68e3c19}.brush-cursor[data-tool="cool"]{border-color:#86d0ed;background:#72b8e519}.brush-cursor.erasing{border-color:#f1b7a7;background:#f1b7a711}
.canvas-label{pointer-events:none;position:absolute;top:16px;left:17px;display:flex;align-items:center;gap:8px;z-index:1;color:#a6b196;font-family:"SFMono-Regular",Consolas,monospace;letter-spacing:.9px;font-size:8px;opacity:.65;text-transform:uppercase}.corner-bracket{display:inline-block;width:7px;height:7px;border-top:1px solid currentColor;border-left:1px solid currentColor;margin-right:2px}.canvas-label-divider{color:#637353}.view-controls{position:absolute;bottom:14px;right:14px;display:flex;align-items:center;gap:2px;padding:4px;background:#1a2419ed;border:1px solid #45533a;border-radius:6px;box-shadow:0 3px 20px #0002;z-index:3}.view-controls .button{background:transparent;border-color:transparent;min-width:30px;min-height:30px;padding:6px;color:#b5c3a6}.view-controls .button:hover:not(:disabled){background:#36452c;color:var(--ink)}.view-controls .button svg{width:16px;height:16px}.control-divider{width:1px;height:16px;background:#45533a;margin:0 4px}.zoom-button{font-size:18px!important;line-height:1}#zoom-label{font-family:"SFMono-Regular",Consolas,monospace;font-size:10px;min-width:36px;text-align:center;color:#b5c3a6}
.heat-legend{position:absolute;bottom:16px;left:17px;width:166px;pointer-events:none;z-index:2;background:#111810dc;padding:9px;border-radius:5px;border:1px solid #3a4633}.heat-legend>span{font-size:7px;color:#a7b697;letter-spacing:.7px}.heat-ramp{height:5px;margin:7px 0 5px;background:linear-gradient(90deg,#233bff,#31527e 25%,#a5381f 55%,#ffcc65 85%,#fff1cf);border-radius:2px}.heat-scale{display:flex;justify-content:space-between;font-family:Consolas,monospace;font-size:8px;color:#b9c4ab}
.inspector{position:absolute;top:15px;right:15px;z-index:3;min-width:181px;background:#172014ef;border:1px solid #48583a;border-radius:6px;padding:11px;box-shadow:0 3px 15px #0002;pointer-events:none}.inspector-heading{display:flex;align-items:center;gap:6px}.inspector-heading strong{font-size:11px;font-weight:600}.inspector-heading>span:not(.swatch){margin-left:auto;font-size:6px;letter-spacing:1px;color:#839970}.inspector .search-clear{pointer-events:auto;min-height:16px;min-width:15px;font-size:17px}.inspector-values{display:flex;gap:24px;margin:12px 0 9px}.inspector-values>span{display:flex;align-items:baseline;gap:4px}.inspector-values strong{font-size:16px;font-family:Consolas,monospace;font-weight:400;color:#d5ddc6}.inspector-values small{font-size:8px;color:#a1b08f}.inspector-location{display:flex;justify-content:space-between;gap:14px;font-size:7px;color:#829970}
.simulation-toolbar{display:flex;align-items:center;gap:24px;flex:none;padding:14px 0 0;min-height:50px}.playback-controls{display:flex;align-items:center;gap:6px}.speed-control{margin-left:4px}.speed-control select{width:100px;min-height:36px;padding:0 7px;background:transparent;font-size:11px}.brush-control{display:flex;align-items:center;gap:10px;color:#a8b898;font-size:11px}.brush-control>svg{width:16px;height:16px;color:#8b9e78}.brush-control input{width:90px;height:20px;accent-color:var(--sand);cursor:pointer;margin:0}.brush-control output{font-family:Consolas,monospace;font-size:11px;min-width:19px;color:#c6d3b6;text-align:center}.discovery-status{display:flex;align-items:center;gap:7px;margin-left:auto;white-space:nowrap}.discovery-star{font-size:17px;color:#bfa36a}.discovery-status .text-button{color:#9aac88;font-size:10px}.discovery-status strong{font-weight:500;color:#d2bd89}.discovery-total{color:#687e56}
.reaction-strip{display:flex;align-items:center;gap:10px;min-width:0;flex:none;padding:13px 0 0}.reaction-strip>.tiny-label{font-size:6px;color:#6f835e;letter-spacing:.9px}.reaction-strip .text-button{font-size:9px;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;color:#9bac87}
.app-footer{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 30px;flex:none;color:var(--faint);font-size:9px}.app-footer p{margin:0;white-space:nowrap}.footer-separator{margin:0 8px;color:#45553a}.statistics{display:flex;align-items:center;white-space:nowrap;font-family:Consolas,monospace;font-size:9px}.statistics strong{font-weight:400;color:#a3b392;font-variant-numeric:tabular-nums}#activity-count{margin-left:15px;color:#637955}.engine-tag{display:flex;align-items:center;gap:6px;margin-left:20px;font-size:7px;font-family:Inter,"Segoe UI",Arial,sans-serif;letter-spacing:1px}.engine-dot{background:#778c63;width:4px;height:4px}.touch-hint{display:none}
.loader{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#10180fee;z-index:5;text-align:center;padding:24px}.loader strong{font-size:17px;font-weight:500;color:#d8e3cb}.loader p{font-size:12px;line-height:1.7;color:var(--muted);max-width:440px;overflow-wrap:anywhere}.loader .button{margin-top:15px}.loader-grains{height:32px;display:flex;gap:6px;align-items:center;margin-bottom:20px}.loader-grains i{width:6px;height:6px;background:var(--sand);animation:grains 1.2s ease-in-out infinite}.loader-grains i:nth-child(2){animation-delay:.15s}.loader-grains i:nth-child(3){animation-delay:.3s}.loader.failed .loader-grains{display:none}@keyframes grains{0%,70%,100%{transform:translateY(0);opacity:.4}35%{transform:translateY(-10px);opacity:1}}
.notice{position:absolute;top:45px;left:18px;right:18px;margin:auto;max-width:560px;padding:10px 8px 10px 14px;background:#303d27f5;border:1px solid #657a4f;color:#d5e6c5;border-radius:7px;z-index:6;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12px;line-height:1.5;box-shadow:0 4px 20px #0003}.notice[data-kind="error"]{background:#3c2924f5;border-color:#795143;color:#f0cec1}.notice .button{flex:none;min-height:28px;min-width:28px;padding:4px}
dialog{max-width:480px;width:calc(100% - 32px);max-height:calc(100dvh - 48px);padding:28px;border:1px solid #526344;border-radius:12px;background:#1c2618;color:var(--ink);box-shadow:0 20px 100px #0008;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#4b603c transparent}dialog::backdrop{background:#080e07c9;backdrop-filter:blur(4px)}.dialog-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}.dialog-heading h2{font-size:25px;font-weight:500;letter-spacing:-.6px;margin:10px 0 4px}dialog p{color:#a8b99a;font-size:12px;line-height:1.8}.shortcuts{margin:22px 0}.shortcuts>div{display:flex;justify-content:space-between;align-items:center;gap:10px;min-height:34px;border-bottom:1px solid #34442a}.shortcuts dt{font-size:12px;color:#c0cfb1}.shortcuts dd{font-size:11px;color:#91a57f;margin:0}kbd{display:inline-flex;justify-content:center;min-width:24px;border:1px solid #526642;border-radius:4px;padding:2px 6px;font-family:inherit;font-size:10px;color:#c8d6b0;background:#2a3821}dialog p.dialog-note{font-size:10px;color:#8a9f78}.dialog-note a{text-decoration:underline;text-underline-offset:3px;color:#cbbf95}
.guide-dialog{max-width:880px;width:calc(100% - 48px);padding:28px;max-height:calc(100dvh - 56px)}.guide-intro{font-size:11px;margin:9px 0 20px}.guide-filters{display:flex;align-items:center;gap:9px;position:sticky;top:-28px;padding:10px 0;background:#1c2618;z-index:1}.guide-filters .search-field{flex:1}.guide-filters .search-field input{font-size:12px;min-height:37px}.guide-filters select{min-height:39px;max-width:180px}.observed-filter{display:flex;align-items:center;gap:5px;font-size:10px;color:#a4b88f;white-space:nowrap}.observed-filter input{accent-color:var(--sand)}.guide-summary{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:9px 0 18px;color:#8a9f77;font-size:10px}.guide-results{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.reaction-card{padding:17px;background:#172112;border:1px solid #3b4c2d;border-radius:7px;min-width:0}.reaction-heading{display:flex;align-items:center;justify-content:space-between;gap:6px}.reaction-heading .tiny-label{font-size:7px;color:#8da674;letter-spacing:.8px}.observed-badge{color:#c3cf8a;font-size:8px;white-space:nowrap}.reaction-card h3{font-size:14px;font-weight:500;margin:10px 0 13px;color:#dce6cb}.reaction-equation{display:flex;flex-wrap:wrap;align-items:center;gap:5px}.ingredient-chip{display:inline-flex;align-items:center;gap:5px;padding:4px 6px;border:1px solid #415631;border-radius:4px;background:#26361d;color:#b8cba4;font-size:9px;line-height:1.4;max-width:100%;overflow-wrap:anywhere}.ingredient-chip .swatch{width:6px;height:6px}button.ingredient-chip:hover{background:#3b4a2b;border-color:#7a8454;color:var(--sand)}.equation-symbol{font-size:12px;color:#8ca66f;padding:0 1px}.reaction-card p{font-size:10px;line-height:1.7;color:#9eb58b;margin:12px 0 0}.reaction-condition{font-size:9px;color:#cfbd8e;margin-top:11px;padding-top:10px;border-top:1px solid #314424;line-height:1.6}
.search-field:focus-within{border-color:var(--sand);box-shadow:0 0 0 1px var(--sand)}.search-field input:focus-visible{outline:none}.heat-scale{position:relative}.heat-scale span:nth-child(2){position:absolute;left:25%;transform:translateX(-50%)}
.no-script{position:fixed;inset:0;z-index:20;display:grid;place-items:center;padding:30px;background:var(--bg);text-align:center}
@media(min-width:1500px){.app-main{grid-template-columns:250px minmax(0,1fr);gap:28px;padding-left:42px;padding-right:42px}.app-header,.app-footer{padding-left:42px;padding-right:42px}.material-button{min-height:39px;font-size:11px}.tool-button{padding:7px 12px;font-size:11px}.canvas-toolbar{margin-bottom:13px}.experiment-hint{margin-bottom:10px}}
@media(max-width:1150px){.app-header{gap:20px;padding:0 22px}.header-caption{font-size:10px}.app-main{grid-template-columns:215px minmax(0,1fr);gap:18px;padding:18px 22px 0}.app-footer{padding:15px 22px}.palette-eyebrow{display:none}.world-title>.tiny-label{display:none}.running-state{margin-right:5px;font-size:9px}.tool-button{padding:6px 7px;gap:5px}.tool-controls{gap:2px}.tool-separator{margin:0 2px}.canvas-toolbar{gap:8px}.view-tabs button{padding:4px 8px}.simulation-toolbar{gap:18px}.brush-control{gap:7px}.brush-control input{width:70px}.discovery-total{display:none}#activity-count{display:none}.palette-note{font-size:7px}}
@media(max-width:960px){.header-caption{display:none}.app-header{height:65px}.app-main{grid-template-columns:194px minmax(0,1fr);padding-left:18px;padding-right:18px;gap:14px}.palette-heading{padding:15px 12px}.palette-filters{padding-left:10px;padding-right:10px}.material-results{padding-left:7px;padding-right:7px}.material-button{font-size:9px;gap:5px;padding:6px}.material-detail{margin:0 12px}.material-detail p{font-size:10px}.palette-note{display:none}.filter-summary>span:last-child{display:none}.tool-button{min-width:34px;padding:7px}.tool-button span{display:none}.tool-button svg{width:16px;height:16px}.tool-controls{gap:3px}.simulation-toolbar{gap:12px;justify-content:space-between}.playback-controls{gap:4px}.button.primary{min-width:77px;padding:7px 9px}.speed-control{margin-left:0}.speed-control select{width:83px;font-size:10px}.brush-control>svg,.brush-control>label{display:none}.brush-control input{width:64px}.discovery-status{gap:4px}.discovery-status .text-button{font-size:8px}.discovery-star{font-size:14px}.app-footer{padding-left:18px;padding-right:18px;font-size:8px}.statistics{font-size:8px}.engine-tag{display:none}.scene-actions .button{font-size:10px;padding:5px 6px}#scenario{font-size:13px;max-width:195px}.running-state{display:none}.inspector{min-width:160px;padding:9px;top:12px;right:12px}.inspector-values{gap:15px}.inspector-values strong{font-size:14px}}
@media(max-width:720px){.app-header{height:58px;padding:0 14px;gap:10px}.wordmark{font-size:16px;gap:8px;letter-spacing:1.3px}.wordmark-engine{font-size:14px;letter-spacing:1.3px}.wordmark-slash{margin:0 2px}.sand-mark{transform:scale(.82);transform-origin:left center;width:23px}.header-actions{gap:3px}.header-actions .button{min-height:32px;padding:6px;gap:5px;font-size:10px}.header-actions .button svg{width:15px;height:15px}.header-actions #save span,.header-actions #load span,.header-divider{display:none}.guide-button .count-badge{display:none}.header-actions #help{min-width:28px}.app-main{display:flex;flex-direction:column;gap:11px;padding:13px 14px 0}.workspace{order:0;flex:1;min-height:310px}.materials{order:1;flex:none;border-radius:7px;display:block;position:relative;overflow:hidden}.workspace-header{min-height:29px;margin:-4px 0 0}.world-title{gap:0}#scenario{font-size:13px;max-width:210px;padding-top:4px;padding-bottom:4px;min-height:29px}.scene-actions{gap:2px}.scene-actions .button{font-size:10px;padding:4px 5px;min-height:28px}.scene-actions .button svg{width:13px;height:13px}.experiment-hint{min-height:24px;margin:1px 0 5px;gap:7px}.experiment-hint .tiny-label{font-size:6px}.experiment-hint p{font-size:9px}.canvas-toolbar{margin-bottom:8px;gap:7px}.tool-controls{gap:2px}.tool-button{min-width:31px;min-height:31px;padding:6px}.tool-button svg{width:15px;height:15px}.tool-separator{height:14px;margin:0 2px}.view-tabs{padding:2px;gap:0}.view-tabs button{font-size:9px;min-height:25px;padding:4px 8px;gap:4px}.heat-dot{width:5px;height:5px}.viewport{min-height:160px;border-radius:7px}.canvas-label{top:11px;left:11px;font-size:6px;gap:6px;max-width:60%}.canvas-label .corner-bracket{width:6px;height:6px}.view-controls{bottom:9px;right:9px;padding:3px}.view-controls .button{min-height:26px;min-width:26px;padding:5px}.view-controls .button svg{width:14px;height:14px}#zoom-label{font-size:9px;min-width:29px}.control-divider{margin:0 2px}.heat-legend{bottom:10px;left:10px;width:132px;padding:7px}.heat-legend>span{font-size:6px;letter-spacing:.3px}.heat-scale{font-size:7px}.heat-ramp{margin-top:6px}.inspector{top:10px;right:10px;min-width:142px;padding:8px;max-width:49%}.inspector-heading{gap:4px}.inspector-heading strong{font-size:9px}.inspector-heading>span:not(.swatch){font-size:5px;letter-spacing:.6px}.inspector-values{gap:12px;margin:9px 0 7px}.inspector-values strong{font-size:13px}.inspector-values small{font-size:6px}.inspector-location{font-size:6px;gap:8px}.simulation-toolbar{padding-top:10px;min-height:43px;gap:8px}.playback-controls{gap:4px}.playback-controls .button{min-height:32px}.playback-controls .button.icon-button{min-width:30px;padding:6px}.button.primary{font-size:11px;min-width:75px}.speed-control select{min-height:32px;width:80px}.brush-control{gap:5px}.brush-control>svg{display:block;width:13px;height:13px}.brush-control input{width:62px}.brush-control output{font-size:10px;min-width:14px}.discovery-status{display:none}.reaction-strip{padding-top:9px;gap:8px}.reaction-strip>.tiny-label{font-size:5px;letter-spacing:.7px}.reaction-strip .text-button{font-size:8px}.palette-heading{padding:7px 10px 4px;min-height:28px}.palette-heading h1{font-size:10px;gap:6px;color:#acbd98;font-weight:500}.palette-heading .count-badge{font-size:7px;padding:2px 4px}.palette-heading .mobile-only{display:inline-flex!important;font-size:9px;min-height:22px;padding:1px 3px;color:#c3b485}.palette-filters,.material-detail,.palette-eyebrow{display:none}.material-results{display:flex;gap:5px;padding:3px 9px 9px;min-height:0;overflow-x:auto;overflow-y:hidden;scrollbar-width:none;max-height:48px}.material-results::-webkit-scrollbar{display:none}.material-button{width:auto;min-width:66px;flex:none;min-height:32px;font-size:10px;padding:6px 9px;gap:6px}.material-button>span:last-child{max-width:110px}.app-footer{padding:10px 14px 11px;font-size:7px;gap:8px}.desktop-hint{display:none}.touch-hint{display:inline}.statistics{font-size:7px}.statistics>.footer-separator,.statistics>#fps-count{display:none}.notice{top:36px;left:9px;right:9px;font-size:11px}.loader strong{font-size:14px}.loader p{font-size:10px}.loader-grains{margin-bottom:12px}.palette-backdrop{position:fixed;inset:0;z-index:10;background:#071006bb;backdrop-filter:blur(3px)}.palette-open .materials{position:fixed;left:10px;right:10px;bottom:10px;max-height:min(76dvh,650px);height:620px;z-index:11;display:flex;border-radius:12px;box-shadow:0 10px 80px #000a;border-color:#647c4d}.palette-open .palette-heading{padding:14px 16px 10px;min-height:50px}.palette-open .palette-heading h1{font-size:14px}.palette-open .palette-heading .count-badge{font-size:9px}.palette-open #palette-open{display:none!important}.palette-open .palette-filters{display:block;padding:0 14px 12px}.palette-open .search-field input{font-size:13px;min-height:38px}.palette-open #category-filter{font-size:12px;min-height:35px}.palette-open .filter-summary{font-size:9px;margin-top:10px}.palette-open .material-results{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));max-height:none;overflow:auto;min-height:100px;padding:0 12px 16px;gap:6px;scrollbar-width:thin}.palette-open .material-button{width:100%;min-width:0;min-height:39px;flex:initial;padding:8px;font-size:10px}.palette-open .material-detail{display:block;padding:12px 0;margin:0 16px}.palette-open .material-detail p{min-height:0;font-size:10px;margin:7px 0}.palette-open .material-detail .text-button{font-size:10px}.guide-dialog{width:calc(100% - 22px);max-height:calc(100dvh - 28px);padding:20px}.guide-dialog .dialog-heading h2{font-size:22px}.guide-intro{font-size:10px;margin-bottom:13px}.guide-filters{flex-wrap:wrap;gap:8px;top:-20px}.guide-filters .search-field{flex-basis:100%}.guide-filters select{flex:1;max-width:none;min-height:33px;font-size:10px}.observed-filter{font-size:10px;margin-left:3px}.guide-summary{font-size:9px;align-items:flex-start;margin-bottom:13px}.guide-summary .text-button{white-space:nowrap;font-size:9px}.guide-results{grid-template-columns:1fr;gap:10px}.reaction-card{padding:15px}.reaction-card h3{font-size:14px}.reaction-card p{font-size:11px}.ingredient-chip{font-size:10px}.reaction-condition{font-size:10px}}
@media(max-width:380px){.app-header{padding:0 10px}.wordmark{font-size:14px;gap:5px}.wordmark-engine{font-size:12px}.header-actions .guide-button{font-size:9px;gap:4px}.header-actions .guide-button svg{display:none}.app-main{padding-left:10px;padding-right:10px}.tool-controls{gap:0}.tool-button{min-width:29px;padding:6px}.tool-separator{margin:0 2px}.view-tabs button{padding:4px 6px}.brush-control>svg{display:none}.brush-control input{width:55px}.scene-actions .button{font-size:9px;padding:4px}.scene-actions .button svg{width:12px;height:12px}#scenario{max-width:180px}.app-footer{padding-left:10px;padding-right:10px;font-size:6px}.statistics{font-size:6px}.palette-open .material-results{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-height:680px) and (min-width:721px){.app-header{height:56px}.app-main{padding-top:13px}.app-footer{padding-top:11px;padding-bottom:11px}.palette-heading{padding-top:12px;padding-bottom:12px}.material-detail{padding-top:11px;padding-bottom:10px}.material-detail p{min-height:0;font-size:10px;max-height:50px}.palette-note{display:none}.simulation-toolbar{padding-top:10px;min-height:45px}.reaction-strip{padding-top:9px}}
@media(max-height:650px) and (max-width:720px){.app-header{height:49px}.app-main{padding-top:8px;gap:8px}.workspace{min-height:250px}.experiment-hint{display:none}.canvas-toolbar{margin-top:6px;margin-bottom:6px}.viewport{min-height:110px}.simulation-toolbar{padding-top:7px;min-height:39px}.reaction-strip{display:none}.app-footer{padding-top:7px;padding-bottom:8px}.material-results{padding-bottom:7px}.palette-heading{padding-top:5px;padding-bottom:2px}.guide-dialog{padding:16px}.guide-filters{top:-16px}}
@media(min-height:651px) and (max-width:720px){.experiment-hint{align-items:flex-start}.experiment-hint>.tiny-label{padding-top:3px}.experiment-hint p{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}}
@media(min-height:700px) and (max-width:480px){.workspace{flex:0 0 auto;min-height:0}.viewport{flex:none;height:clamp(260px,calc(100dvh - 520px),360px)}.materials{display:flex;flex:1;min-height:90px}.material-results{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));max-height:none;overflow:auto;scrollbar-width:thin;align-content:start}.material-button{width:100%;min-width:0;min-height:33px;padding:6px;font-size:9px;gap:5px}.material-button>span:last-child{max-width:100%}.palette-open .materials{flex:none}.palette-open .material-results{grid-template-columns:repeat(3,minmax(0,1fr))}.palette-open .material-button{font-size:10px;min-height:39px;padding:8px}}
@media(max-height:520px) and (min-width:721px){.app-header{height:46px}.app-main{padding-top:8px}.app-footer{padding-top:6px;padding-bottom:6px}.workspace-header{min-height:29px}.experiment-hint,.reaction-strip,.material-detail,.palette-note{display:none}.canvas-toolbar{margin-top:4px;margin-bottom:6px}.viewport{min-height:90px}.simulation-toolbar{padding-top:7px;min-height:39px}.palette-heading{padding-top:10px;padding-bottom:10px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

.burning-label{color:#ffba77;font-size:10px;margin:0 0 8px;line-height:1.4}@media(max-width:700px){.burning-label{font-size:8px}}

/* Optional apparatus guidance stays outside pointer input and physics. */
.milestones{padding:0 0 12px}.milestones>.tiny-label{display:block;margin-bottom:7px;color:#a7b394}.milestones .tiny-label span{color:#ddbd77;margin-left:6px}#milestone-list{display:flex;flex-wrap:wrap;gap:5px 14px}.milestone{font-size:10px;color:#8e9c87;line-height:1.5}.milestone[data-complete="true"]{color:#c2d89d}.scene-labels{position:absolute;inset:0;pointer-events:none;overflow:hidden}.scene-label{position:absolute;transform:translate(-50%,-100%);white-space:nowrap;color:#b3c8a2;background:#101810d9;border-bottom:1px solid #596b42;padding:3px 6px;font:8px/1.3 monospace;letter-spacing:.7px}.device-status{font-size:10px;line-height:1.5;color:#c6d2b5;max-width:220px;margin:0 0 8px}@media(max-width:700px){.milestones{padding-bottom:8px}#milestone-list{gap:3px 9px}.milestone{font-size:8px}.milestones>.tiny-label{font-size:6px;margin-bottom:4px}.scene-label{font-size:5px;letter-spacing:0;padding:2px 3px}.device-status{font-size:8px;max-width:160px}}

/* Keep the apparatus operating instructions readable at desktop and phone widths. */
body[data-apparatus="true"] .experiment-hint{align-items:flex-start}
body[data-apparatus="true"] .experiment-hint p{white-space:normal;display:block;-webkit-line-clamp:unset;overflow:visible}