:root{
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.sidebar{padding:28px 18px 34px;border-right:1px solid rgba(124,178,205,.17);background:linear-gradient(180deg,rgba(12,24,34,.72),rgba(7,16,24,.25));position:sticky;top:0;align-self:start;min-height:100vh}
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.footer{max-width:1600px;margin:0 auto;padding:24px 34px 40px;border-top:1px solid rgba(126,174,198,.14);color:var(--muted);font-size:.7rem;line-height:1.5}.footer p{margin:0 0 6px}.footer strong{color:#cad8e0}.footer-note{opacity:.8}
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/* v3 interaction refinements */
.stage-readout small{display:block;margin-top:7px;color:var(--muted);font-size:.69rem;line-height:1.45;max-width:230px;transition:opacity .22s ease,transform .22s ease}
.comparison-panel.stage-shift .stage-readout small{opacity:.2;transform:translateY(3px)}
.therapy-card{transition:border-color .35s ease,transform .35s ease,box-shadow .35s ease,background .35s ease}
.therapy-card.stage-pop{transform:translateY(-2px)}
.control-therapy.stage-pop{border-color:rgba(118,146,255,.42);box-shadow:inset 0 3px 0 rgba(118,146,255,.75),0 14px 40px rgba(40,52,110,.12)}
.vr-therapy.stage-pop{border-color:rgba(116,215,233,.42);box-shadow:inset 0 3px 0 rgba(116,215,233,.75),0 14px 40px rgba(40,110,124,.12)}
.patient-visual:after{content:"";position:absolute;inset:14px;border-radius:16px;border:1px solid transparent;pointer-events:none;transition:border-color .35s ease,opacity .35s ease}
.vr-therapy.stage-pop .patient-visual:after{border-color:rgba(116,215,233,.12)}
.control-therapy.stage-pop .patient-visual:after{border-color:rgba(118,146,255,.11)}
.comparison-insight{display:flex;align-items:flex-start;gap:12px;margin-top:15px;padding:13px 14px;border-radius:14px;border:1px solid #244252;background:linear-gradient(90deg,rgba(116,215,233,.08),rgba(12,27,37,.75));transition:opacity .25s ease,transform .25s ease}
.comparison-insight.flash{opacity:.25;transform:translateY(4px)}
.insight-icon{display:grid;place-items:center;flex:0 0 30px;width:30px;height:30px;border-radius:9px;background:#173848;color:var(--accent);font-weight:900}
.comparison-insight b{font-size:.8rem}.comparison-insight p{margin:3px 0 0;color:var(--muted);font-size:.71rem;line-height:1.45}
.motion-readout{display:flex;justify-content:space-between;align-items:center;gap:14px;margin:4px 0 12px;padding:11px 13px;border:1px solid #1f3948;background:#0a1822;border-radius:13px}
.motion-readout span,.motion-readout strong{display:block}.motion-readout span{font-size:.64rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.motion-readout strong{font-size:.82rem;margin-top:3px}
.motion-chip{white-space:nowrap;border-radius:999px;padding:7px 10px;font-size:.7rem;font-weight:900;background:var(--danger-soft);color:#ff9d97;border:1px solid #8f4642;transition:.25s}
.motion-chip.clear{background:#113526;color:#91e9b7;border-color:#2d7753}
#painArcSvg{transition:opacity .35s ease,stroke-width .35s ease,filter .35s ease}
#armGroup,#armTrailGroup{transition:transform .16s ease-out,opacity .25s ease}
#shoulderGlow{transition:fill .25s ease,opacity .25s ease}
.shoulder-model-wrap.pain-active #painArcSvg{opacity:.55;stroke-width:22;filter:drop-shadow(0 0 9px rgba(239,106,99,.35))}
.shoulder-model-wrap.clear-active #painArcSvg{opacity:.14;stroke-width:14}
.shoulder-model-wrap.pain-active #shoulderGlow{fill:#ef6a63}.shoulder-model-wrap.clear-active #shoulderGlow{fill:#74d7e9}
.zero-dot{transition:transform .22s ease,background .22s ease,border-color .22s ease,box-shadow .22s ease}.zero-dot.done{transform:scale(1.07);box-shadow:0 0 0 5px rgba(119,214,161,.08)}
.recovery-message.success{animation:successPop .35s ease}@keyframes successPop{0%{transform:scale(.98);opacity:.4}100%{transform:none;opacity:1}}
@media(max-width:780px){.motion-readout{align-items:flex-start;flex-direction:column}.stage-readout small{max-width:none}}