/* Interaction layer for living scenes and explicit nucleotide identity. */
.teaching-switch{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 36px;background:var(--panel);border-bottom:1px solid var(--line)}.teaching-switch[hidden]{display:none}.teaching-switch span{font:11px var(--mono);color:var(--muted)}.teaching-switch button{font-size:12px;color:var(--mint);border:1px solid var(--line);border-radius:6px;padding:8px 12px}.teaching-switch button:hover{border-color:var(--mint)}@media(max-width:760px){.teaching-switch{padding:12px 20px;flex-wrap:wrap;gap:10px}}
.spatial-controls{display:flex;align-items:center;gap:12px 22px;flex-wrap:wrap;padding:10px 36px;border-bottom:1px solid var(--line);background:var(--panel)}.spatial-controls[hidden]{display:none}.spatial-group{display:flex;align-items:center;gap:4px}.spatial-group>span{font:10px var(--mono);color:var(--soft);margin-right:6px}.spatial-group button{font-size:11px;padding:6px 10px;border:1px solid var(--line);border-radius:5px;color:var(--muted)}.spatial-group button:hover,.spatial-group button[aria-pressed=true]{background:color-mix(in srgb,var(--mint) 12%,var(--panel));color:var(--mint);border-color:var(--mint)}.spatial-controls p{font-size:10px;flex:1;min-width:210px}.translation-diagram{display:block;width:100%;max-width:310px;margin:15px auto}.translation-key{font-size:10px!important;line-height:1.8}.translation-link{font-size:10px}@media(max-width:760px){.spatial-controls{padding:10px 20px;gap:10px}.spatial-group button{padding:6px 8px}}
.activity-strip{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:13px 36px;border-bottom:1px solid var(--line);background:var(--panel)}
.activity-strip[hidden]{display:none}.activity-heading{display:flex;align-items:center;gap:12px;min-width:0}.activity-heading>div>p{font-size:11px;color:var(--text);font-weight:600;letter-spacing:.025em}.activity-indicator{height:8px;width:8px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 5px color-mix(in srgb,var(--mint) 11%,transparent);flex:none}.activity-strip[data-running=false] .activity-indicator{background:var(--soft);box-shadow:none}.activity-chips{display:flex;align-items:center;gap:6px 13px;flex-wrap:wrap;min-height:19px}.activity-chips span{font-size:10px;color:var(--muted);white-space:nowrap}.activity-chips span::before{content:'';display:inline-block;height:4px;width:4px;background:currentColor;border-radius:50%;margin:0 5px 2px 0;opacity:.65}.activity-actions{display:flex;gap:18px;align-items:center;flex:none}.motion-toggle{border:1px solid var(--line);background:var(--panel2);border-radius:30px;padding:8px 13px;font-size:11px;white-space:nowrap;color:var(--text)}.motion-toggle:hover{border-color:var(--mint);color:var(--mint)}.motion-speed{font-size:10px;color:var(--muted);display:flex;align-items:center;gap:8px}.motion-speed input{width:75px}.motion-speed output{min-width:28px;font:10px var(--mono)}.motion-explainer{position:relative}.motion-explainer summary{display:grid;place-items:center;list-style:none;border:1px solid var(--line);border-radius:50%;height:23px;width:23px;font:italic 14px Georgia;cursor:pointer;color:var(--muted)}.motion-explainer summary::-webkit-details-marker{display:none}.motion-explainer>div{position:absolute;z-index:12;right:0;top:34px;width:min(320px,calc(100vw - 40px));background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:18px;box-shadow:0 12px 35px #0002}.motion-explainer strong{color:var(--text);font-size:12px}.motion-explainer p{font-size:11px;margin-top:8px;line-height:1.7}
.nucleotide-key{display:flex;gap:7px;flex-wrap:wrap;margin:13px 0 9px}.nucleotide-chip{display:inline-flex;gap:6px;align-items:center;font-size:10px;color:var(--muted)}.nucleotide-chip b{display:inline-grid;place-items:center;width:22px;height:25px;border-radius:5px;border:1px solid #243b4438;font:600 12px var(--mono);color:#233441;box-shadow:inset 0 1px 0 #fff8}.nucleotide-chip[data-base=A] b{background:var(--base-a,#a8d8ff)}.nucleotide-chip[data-base=T] b{background:var(--base-t,#ffb6bd)}.nucleotide-chip[data-base=C] b{background:var(--base-c,#fff0a6)}.nucleotide-chip[data-base=G] b{background:var(--base-g,#b7e8bf)}.nucleotide-key.compact .nucleotide-chip span{display:none}.molecular-view-settings{margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}.molecular-view-settings .fact-label{margin-bottom:6px}.molecular-view-settings>p{font-size:11px;line-height:1.8}.molecular-view-settings .context-caveat{font-size:10px;color:var(--soft);margin-top:8px}.molecular-setting{display:flex;gap:7px;align-items:flex-start;line-height:1.6;margin-top:12px;font-size:11px!important;color:var(--muted)}.molecular-setting input{margin-top:3px}.molecular-setting:has(input:disabled){opacity:.65}.palette-link{font-size:10px;color:var(--mint);padding:5px 0}.palette-link:hover{text-decoration:underline}.contact-key{display:flex;gap:13px;flex-wrap:wrap;font-size:9px;color:var(--muted);margin-top:11px}.contact-key span{display:inline-flex;gap:5px;align-items:center}.contact-key i{display:inline-block;width:16px;border-top:2px solid var(--muted);height:0}.contact-key i.noncanonical{border-top-style:dashed}.model-context-caption{font-size:10px;line-height:1.7;color:var(--soft);margin-top:12px}.ic-motion{margin-left:auto}.ic-identity-key{padding:0 18px 12px}.ic-caption .ic-context{padding-top:8px;border-top:1px solid var(--line);margin-top:9px}.sequence .a{color:var(--base-a,#a8d8ff)}.sequence .t{color:var(--base-t,#ffb6bd)}.sequence .c{color:var(--base-c,#fff0a6)}.sequence .g{color:var(--base-g,#b7e8bf)}
@media(max-width:1100px){.activity-strip{padding:12px 24px;gap:15px}.activity-chips{gap:3px 9px}.activity-actions{gap:12px}.activity-chips span{font-size:9px}.motion-speed input{width:55px}}
@media(max-width:760px){.activity-strip{padding:13px 20px;align-items:flex-start;flex-wrap:wrap;gap:12px}.activity-heading{width:100%}.activity-actions{width:100%;justify-content:space-between}.motion-speed{flex:1;justify-content:center}.motion-speed input{width:min(120px,22vw)}.activity-chips span{font-size:10px}.motion-explainer>div{right:0}.nucleotide-key{gap:9px 12px}}
@media(prefers-reduced-motion:reduce){.activity-indicator{box-shadow:none}}
.stage.molecular-scene{height:860px}.explorer:has(.molecular-scene) .inspector{height:860px}
@media(max-width:760px){.stage.molecular-scene{height:800px}.explorer:has(.molecular-scene) .inspector{height:auto}}
.nucleotide-chip[data-base=A] b{color:var(--base-a-ink,#233441)}.nucleotide-chip[data-base=T] b{color:var(--base-t-ink,#233441)}.nucleotide-chip[data-base=C] b{color:var(--base-c-ink,#233441)}.nucleotide-chip[data-base=G] b{color:var(--base-g-ink,#233441)}
.nucleotide-chip[data-base=U] b{background:#f4ca95;color:#233441}.mini-legend .swatch{outline:1px solid color-mix(in srgb,var(--text) 18%,transparent)}
.drawn-sequences{margin-top:20px;border-top:1px solid var(--line);padding-top:14px}.drawn-sequences>summary{font-size:11px;color:var(--mint);cursor:pointer}.drawn-sequences>p{font-size:10px;line-height:1.8;margin-top:10px}.drawn-chain{margin-top:15px}.drawn-chain>strong{font-size:10px;color:var(--muted)}.drawn-chain .sequence{font-size:10px;line-height:2.5;letter-spacing:.03em;padding:8px 0;word-break:break-all}.drawn-chain .sequence span{padding:1px 2px!important}.drawn-chain .sequence .flanking-base{text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}.sequence .u{background:#f4ca95;color:#233441;border-radius:3px;padding:2px 3px}

.gene-expression-note{padding:24px 28px;margin-bottom:28px;border:1px solid var(--line);border-radius:12px;background:var(--panel)}.gene-expression-note h3{font:25px var(--serif);margin-bottom:14px}.gene-expression-note p{font-size:12px;line-height:1.9;margin-bottom:12px;max-width:1000px}.gene-expression-note small{font-size:10px;color:var(--soft);display:block;max-width:1000px}

.tracking-panel{position:absolute;z-index:5;left:24px;bottom:174px;width:min(330px,calc(100% - 48px));padding:16px;border:1px solid var(--mint);border-radius:10px;background:var(--panel);box-shadow:0 5px 25px #0001}.tracking-panel[hidden]{display:none}.tracking-panel strong{font-size:12px}.tracking-panel p{font-size:11px;line-height:1.7;margin:8px 0}.tracking-panel small{font-size:9px;color:var(--soft)}.tracking-panel div{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.tracking-panel button{font-size:10px;color:var(--mint);border:1px solid var(--line);padding:6px;border-radius:5px}.tracking-active .hotspots{visibility:hidden}

#freeCameraControls{flex-wrap:wrap;width:100%;font-size:10px}#freeCameraControls[hidden]{display:none}#freeCameraControls input{width:75px}#freeCameraPosition{color:var(--soft);font:9px var(--mono)}

.free-camera .hotspots{visibility:hidden}

#cellPlaybackProgress{display:inline-block;width:95px;height:5px;accent-color:var(--mint);margin-right:9px}#cellPlaybackProgress[hidden],#cellPlaybackState[hidden]{display:none}#cellPlaybackState{font:9px var(--mono);color:var(--soft)}

@media(max-width:760px){.tracking-panel{width:min(260px,calc(100% - 32px));left:16px;bottom:100px;padding:12px}.tracking-panel small{display:none}.tracking-panel p{font-size:10px}.tracking-panel div{gap:5px;margin-top:8px}}

.species-controls{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-top:18px;font-size:10px}.species-controls button{padding:7px 12px;border:1px solid var(--line);border-radius:6px;color:var(--mint)}.species-controls small{width:100%;color:var(--soft);font-size:10px}

/* Semantic compartment key; colors are schematic, not microscopy claims. */
.cell-color-key{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;padding:16px 36px;border-bottom:1px solid var(--line,#ccdada);font-size:12px;color:var(--muted,#526a74)}
.cell-color-key strong{color:var(--text,#233c46)}
.cell-color-key span{display:inline-flex;align-items:center;gap:7px}
.cell-color-key i{width:11px;height:11px;display:inline-block;border-radius:50%;border:1px solid #ffffff66}
.cell-color-key small{flex-basis:100%;line-height:1.5}
@media(max-width:640px){.cell-color-key{padding:14px 18px;gap:9px 16px}}


/* A small toolbar and a model that fits the current screen. */
.model-toolbar{display:flex;align-items:center;gap:12px;padding:10px 24px;border-bottom:1px solid var(--line);background:var(--panel);position:relative;z-index:8}
.model-toolbar[hidden],#viewOptions[hidden]{display:none}
.model-toolbar .activity-strip{border:0;padding:0;flex:1;min-width:0;gap:14px}
.model-toolbar .activity-chips,.model-toolbar #cellPlaybackProgress,.model-toolbar #cellPlaybackState{display:none}
.model-toolbar .activity-heading p{font-size:11px}
#viewOptions>summary{cursor:pointer;list-style:none;padding:8px 12px;border:1px solid var(--line);border-radius:7px;color:var(--mint);font-size:12px;white-space:nowrap}
#viewOptions>summary::after{content:' ▾'}
#viewOptions[open]>summary::after{content:' ▴'}
.view-options-body{position:absolute;right:20px;top:calc(100% - 1px);width:min(650px,calc(100vw - 32px));max-height:65svh;overflow:auto;padding:16px;background:var(--panel);border:1px solid var(--line);border-radius:8px;box-shadow:0 12px 35px #0002}
.view-options-body .spatial-controls{padding:0 0 14px;border:0}
.view-options-body .motion-speed{justify-content:flex-start;margin:10px 0;display:flex}
.view-options-body .motion-explainer>div{position:static;width:auto;box-shadow:none}
.stage,.stage.molecular-scene{height:clamp(440px,calc(100svh - 205px),760px)}
.explorer .inspector,.explorer:has(.molecular-scene) .inspector{height:auto;max-height:760px;overflow:auto}
.camera-more{position:relative}
.camera-more>summary{list-style:none;cursor:pointer;padding:6px 10px;font-size:11px;color:var(--mint)}
.camera-more>div{position:absolute;right:0;bottom:calc(100% + 10px);display:flex;gap:4px;padding:7px;background:var(--panel);border:1px solid var(--line);border-radius:7px;white-space:nowrap}
.camera-more:not([open])>div{display:none}
@media(max-width:760px){
 .model-toolbar{padding:8px 16px;gap:8px}
 .model-toolbar .activity-strip{flex-wrap:nowrap;align-items:center;gap:8px}
 .model-toolbar .activity-heading{width:auto;flex:1}
 .model-toolbar .activity-actions{width:auto}
 .model-toolbar .activity-indicator{display:none}
 .model-toolbar .activity-heading p{font-size:10px;line-height:1.3;max-width:100px}
 .model-toolbar .motion-toggle{padding:7px 8px;font-size:10px}
 #viewOptions>summary{font-size:10px;padding:8px}
 .stage,.stage.molecular-scene{height:clamp(430px,calc(100svh - 190px),680px)}
 .explorer .inspector,.explorer:has(.molecular-scene) .inspector{max-height:none}
 .scene-footer p{display:none}
 .camera-controls{bottom:102px}
}

/* One optional movement action replaces the six directional button row. */
#freeCameraControls>label{display:flex;align-items:center;gap:8px}
#freeCameraControls select{max-width:100%;padding:7px 9px;border:1px solid var(--line);border-radius:6px;background:var(--panel);color:var(--text);font-size:12px;min-height:40px}
.camera-movement{width:100%;border-top:1px solid var(--line);padding-top:10px}
.camera-movement>summary{cursor:pointer;color:var(--mint);font-size:12px;padding:5px 0}
.camera-movement>div{display:flex;align-items:center;flex-wrap:wrap;gap:10px;padding:10px 0}
.camera-movement p,.camera-movement small{width:100%;font-size:11px;line-height:1.6}
.camera-movement label{display:flex;align-items:center;gap:7px}
.camera-movement #cameraStep{min-width:64px;min-height:44px;font-size:12px}