#harmonic-space { --hs-a: #17827b; --hs-b: #bd6436; --hs-seven: #7962b8; }
#harmonic-space .page-heading { max-width: 900px; }
.hs-layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 20px; align-items: start; }
.hs-instrument, .hs-lesson { min-width: 0; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.hs-toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; justify-content: space-between; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.hs-toolbar > div, .hs-actions, .hs-view-tools { display: flex; flex-wrap: wrap; gap: 7px; }
.hs-playing-controls { display: flex; flex-wrap: wrap; gap: 10px; padding: 12px 18px; border-bottom: 1px solid var(--line); background: #fafbf9; }
.hs-playing-controls label { display: grid; gap: 5px; font-size: 12px; flex: 1 1 140px; }
.hs-playing-controls label[hidden] { display: none; }
.hs-playing-controls label:has(#hsTempo) { flex: 0 1 85px; }
.hs-playing-controls select, .hs-playing-controls input { padding: 8px; min-height: 40px; font-size: 13px; }
.hs-journey-status { margin-top: 12px !important; line-height: 1.6; }
.hs-scale-controls { border: 0; border-bottom: 1px solid var(--line); margin: 0; padding: 10px 18px 12px; min-width: 0; }
.hs-scale-controls legend { padding: 10px 0 0; font-size: 13px; font-weight: 650; }
.hs-scale-fields { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr) 120px auto; align-items: end; gap: 10px; }
.hs-scale-fields label { display: grid; gap: 5px; font-size: 12px; min-width: 0; }
.hs-scale-fields select { width: 100%; min-width: 0; padding: 8px; min-height: 40px; font-size: 13px; }
.hs-scale-fields button { min-height: 40px; }
#hsScaleSummary { margin: 10px 0 4px; font-size: 12px; line-height: 1.6; }
.hs-scale-help { margin: 0; font-size: 11px; line-height: 1.5; color: var(--muted); }
@media (max-width: 1100px) { .hs-scale-fields { grid-template-columns: minmax(0,1fr) minmax(0,1fr); } }
#harmonic-space button { font-size: 13px; }
#harmonic-space button[aria-pressed="true"] { color: white; background: var(--accent); border-color: var(--accent); }
#harmonic-space button:disabled { opacity: .45; cursor: not-allowed; }
.hs-legend { display: flex; flex-wrap: wrap; gap: 8px 20px; padding: 14px 18px 0; font-size: 12px; }
.hs-legend span::before { content: ""; display: inline-block; width: 20px; height: 3px; margin: 0 6px 3px 0; background: var(--hs-a); }
.hs-legend span:nth-child(2)::before { background: var(--hs-b); }
.hs-legend span:nth-child(3)::before { background: var(--hs-seven); }
.hs-stage, .hs-viewport { position: relative; min-width: 0; min-height: 0; }
.hs-stage:is(:fullscreen, .hs-expanded) { position: fixed; inset: 0; width: 100%; height: 100%; height: 100dvh; z-index: 300; background: white; display: grid; grid-template-columns: minmax(0,1fr) 360px; }
.hs-stage:is(:fullscreen, .hs-expanded) #hsScene { width: 100%; height: 100%; }
#hsFullscreenControls { min-width: 0; min-height: 0; overflow: auto; overscroll-behavior: contain; background: var(--panel); border-left: 1px solid var(--line); padding-bottom: env(safe-area-inset-bottom); }
#hsFullscreenControls[hidden], .hs-walk > [hidden] { display: none; }
.hs-fullscreen-heading { position: sticky; top: 0; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 14px; background: var(--panel); border-bottom: 1px solid var(--line); }
.hs-fullscreen-heading h3 { margin: 0; font-size: 16px; }
.hs-fullscreen-heading > div { display: flex; gap: 7px; }
.hs-fullscreen-sound { display: flex; flex-wrap: wrap; gap: 10px; padding: 12px 14px; border-bottom: 1px solid var(--line); }
.hs-fullscreen-sound .sound-picker { flex: 1 1 100%; min-width: 0; font-size: 12px; grid-template-columns: 45px minmax(0,1fr); }
.hs-fullscreen-sound select { min-width: 0; width: 100%; min-height: 38px; }
.hs-fullscreen-sound .stepper-group select { width: 72px; }
#hsFullscreenControls .hs-scale-fields { grid-template-columns: minmax(0,1fr) minmax(0,1fr); }
#hsFullscreenControls .hs-range { grid-template-columns: 1fr 1fr; }
#hsFullscreenControls .hs-range label:last-of-type { grid-column: 1/-1; }
#hsFullscreenControls .hs-lesson { display: block; border: 0; border-radius: 0; }
#hsFullscreenControls .hs-tuning { margin-top: 20px; padding-top: 18px; border-top: 1px solid var(--line); }
#hsFullscreenControls .hs-tuning-head, #hsFullscreenControls .hs-tuning-ends { display: flex; }
#hsFullscreenControls #hsBlend { display: block; }
#hsFullscreenMore > summary { cursor: pointer; padding: 16px 14px; font-size: 13px; }
@media (max-width: 700px) {
  .hs-stage:is(:fullscreen, .hs-expanded) { grid-template-columns: minmax(0,1fr); grid-template-rows: minmax(0,1fr) minmax(0,45%); }
  #hsFullscreenControls { border-left: 0; border-top: 1px solid var(--line); }
}
body:has(.hs-expanded) { overflow: hidden; }
.hs-stage.hs-demo:is(:fullscreen, .hs-expanded) { grid-template-columns: minmax(0,1fr); grid-template-rows: minmax(0,1fr); border: 0; border-radius: 0; }
.hs-demo #hsScene { outline: none; cursor: default; }
.hs-demo .hs-view-tools, .hs-demo #hsFullscreen { display: none; }
.hs-demo-hud { position: absolute; top: max(22px, env(safe-area-inset-top)); left: max(24px, env(safe-area-inset-left)); right: 130px; pointer-events: none; }
.hs-demo-hud h3 { margin: 0; font-size: clamp(16px, 2vw, 23px); font-weight: 550; }
.hs-demo-hud p { font-size: 12px; color: var(--muted); margin: 7px 0; }
.hs-demo-hud > div { display: flex; flex-wrap: wrap; gap: 6px 20px; font-size: 12px; }
.hs-demo-hud span:first-child { color: var(--hs-a); }
.hs-demo-hud span:last-child { color: var(--hs-b); }
.hs-demo-path { margin: 12px 0 0; width: 280px; max-width: 100%; background: rgba(255,255,255,.94); }
.hs-demo-path figcaption { font-size: 11px; color: var(--muted); }
#hsDemoPath { display: block; width: 100%; height: auto; font-family: inherit; }
.hs-demo-exit { position: absolute; right: max(18px, env(safe-area-inset-right)); top: max(18px, env(safe-area-inset-top)); background: white; color: var(--ink); border-color: var(--line); min-height: 40px; }
.hs-demo-hud[hidden], .hs-demo-exit[hidden] { display: none; }
.hs-fullscreen-toggle { position: absolute; top: max(12px, env(safe-area-inset-top)); right: max(14px, env(safe-area-inset-right)); min-height: 40px; }
.hs-compact-tuning { display: none; }
#hsScene { display: block; width: 100%; height: 440px; touch-action: none; cursor: grab; background: radial-gradient(ellipse at 50% 50%, #f7f8fa, #fff 70%); }
#hsScene:active { cursor: grabbing; }
#hsScene text { font-family: inherit; pointer-events: none; }
#hsScene [role="button"] { cursor: pointer; outline: none; }
#hsScene [role="button"]:focus circle.hs-dot { stroke: var(--ink); stroke-width: 4; }
.hs-view-tools { position: absolute; right: 14px; bottom: 10px; }
.hs-stage:is(:fullscreen, .hs-expanded) .hs-view-tools { right: max(14px, env(safe-area-inset-right)); bottom: max(10px, env(safe-area-inset-bottom)); }
.hs-view-tools button, #hsFullscreen { background: #fff !important; color: var(--ink) !important; border-color: var(--line); padding: 0 10px; }
.hs-view-tools button { min-height: 34px; }
.hs-caption { margin: 0; padding: 4px 18px 14px; color: var(--muted); font-size: 12px; line-height: 1.6; }
.hs-selection { padding: 16px 18px; border-top: 1px solid var(--line); background: #fafbf9; }
.hs-selection-top { display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; align-items: center; }
.hs-selection h3 { font-size: 18px; margin: 0 0 5px; }
.hs-selection p { margin: 0; font-size: 12px; color: var(--muted); }
.hs-walk { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.hs-walk > div { display: flex; }
.hs-walk button { padding: 0 10px; border-color: var(--line); }
.hs-walk button:first-child { border-radius: 6px 0 0 6px; }
.hs-walk button:last-child { border-radius: 0 6px 6px 0; border-left: 0; }
.hs-walk > div:nth-child(2) button { color: var(--hs-b); }
.hs-walk > div:nth-child(3) button { color: var(--hs-seven); }
.hs-lesson { padding: 20px; }
.hs-lesson h3 { font-size: 18px; margin: 0 0 8px; }
.hs-lesson label, .hs-range label { display: grid; gap: 7px; font-size: 12px; font-weight: 650; }
.hs-lesson select, .hs-range select, .hs-range input { min-height: 42px; border: 1px solid var(--line); border-radius: 6px; background: white; padding: 7px; width: 100%; color: var(--ink); }
.hs-lesson p { font-size: 13px; line-height: 1.65; }
.hs-path-label { display: flex; gap: 10px; align-items: start; margin-top: 16px; font-size: 13px; }
.hs-path-letter { display: grid; place-items: center; width: 25px; height: 25px; flex-shrink: 0; background: var(--hs-a); color: white; border-radius: 50%; }
.hs-path-b .hs-path-letter { background: var(--hs-b); border-radius: 5px; }
.hs-path-label small { display: block; color: var(--muted); margin-top: 3px; font-variant-numeric: tabular-nums; }
.hs-actions { margin-top: 16px; }
.hs-actions button { flex: 1 1 auto; }
.hs-tuning { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); }
.hs-tuning input { width: 100%; accent-color: var(--accent); min-height: 30px; cursor: ew-resize; }
.hs-tuning-head { display: flex; justify-content: space-between; font-size: 13px; gap: 10px; }
.hs-tuning-ends { display: flex; justify-content: space-between; }
.hs-tuning-ends button { border: 0; min-height: 32px; padding: 0; background: transparent; color: var(--accent); }
.hs-pitch { width: 100%; height: 62px; overflow: visible; margin-top: 12px; }
.hs-gap { display: flex; justify-content: space-between; align-items: baseline; margin: 4px 0; font-size: 12px; }
.hs-gap strong { font-size: 22px; font-weight: 600; font-variant-numeric: tabular-nums; }
.hs-status { border-left: 3px solid var(--accent); padding-left: 10px; min-height: 42px; }
.hs-range { display: grid; grid-template-columns: 1fr 1fr 1.2fr; gap: 12px; padding: 16px 18px; border-top: 1px solid var(--line); }
.hs-range p { grid-column: 1/-1; margin: 0; font-size: 12px; color: var(--muted); line-height: 1.6; }
.hs-footnotes { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin: 26px 0 12px; max-width: 1200px; }
.hs-footnotes h3 { font-size: 16px; margin: 0 0 10px; }
.hs-footnotes p, .hs-footnotes li { font-size: 13px; line-height: 1.7; color: var(--muted); }
.hs-footnotes details { margin: 12px 0; }
.hs-footnotes summary { cursor: pointer; font-size: 13px; color: var(--accent); }
.hs-addresses { overflow-wrap: anywhere; }
@media (min-width: 1500px) { #hsScene { height: 520px; } }
@media (max-width: 1050px) { .hs-layout { grid-template-columns: minmax(0, 1fr) 310px; gap: 14px; } .hs-toolbar { padding: 12px; } }
@media (max-width: 820px) { .hs-layout { grid-template-columns: 1fr; } .hs-lesson { display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; } .hs-lesson .hs-tuning { margin-top: 0; padding-top: 0; border: 0; } .hs-status { grid-column: 1/-1; } #hsScene { height: 390px; } }
@media (max-width: 520px) { .hs-lesson, .hs-footnotes { display: block; } .hs-lesson .hs-tuning { margin-top: 20px; padding-top: 18px; border-top: 1px solid var(--line); } .hs-range { grid-template-columns: 1fr 1fr; } .hs-range label:last-of-type { grid-column: 1/-1; } .hs-footnotes > div + div { margin-top: 22px; } .hs-toolbar { gap: 7px; } .hs-legend { gap: 7px 12px; padding-left: 12px; font-size: 11px; } #hsScene { height: 360px; } .hs-selection { padding: 14px 12px; } }
@media (max-width: 820px) {
  .hs-compact-tuning { display: grid; gap: 4px; padding: 16px 14px 0; font-size: 12px; }
  .hs-compact-tuning label, .hs-compact-tuning > div { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
  .hs-compact-tuning output { color: var(--muted); font-weight: 400; }
  .hs-compact-tuning input { width: 100%; accent-color: var(--accent); }
  .hs-tuning-head, #hsBlend, .hs-tuning-ends { display: none; }
}
@media (max-width: 760px) {
  body:has(#harmonic-space.active) .app-header { position: static; gap: 8px; }
  body:has(#harmonic-space.active) .app-header h1 { font-size: 19px; }
  body:has(#harmonic-space.active) .top-nav { justify-content: flex-start; gap: 2px; }
  body:has(#harmonic-space.active) .top-nav a,
  body:has(#harmonic-space.active) .nav-group-trigger { font-size: 13px; padding: 7px 8px; }
  body:has(#harmonic-space.active) footer { padding: 8px 16px; gap: 6px; }
  body:has(#harmonic-space.active) footer .footer-row { gap: 6px; }
  body:has(#harmonic-space.active) footer label:has(#tempoInput),
  body:has(#harmonic-space.active) footer label:has(#globalTuning),
  body:has(#harmonic-space.active) footer .footer-row:last-child > :not(#musicSettingsPop):not(#recordOutput):not(.footer-help) { display: none; }
  body:has(#harmonic-space.active) footer button,
  body:has(#harmonic-space.active) footer summary,
  body:has(#harmonic-space.active) footer .footer-help { font-size: 12px; padding: 0 9px; min-height: 38px; }
  body:has(#harmonic-space.active) footer .tonic-picker { font-size: 12px; }
  body:has(#harmonic-space.active) #footerTonic { min-height: 38px; padding: 4px; }
  body:has(#harmonic-space.active) footer label:has(#soundSelect) { flex: 1 1 120px; min-width: 0; gap: 4px; font-size: 12px; }
  body:has(#harmonic-space.active) #soundSelect { min-width: 0; width: 100%; padding: 5px; min-height: 38px; }
}
@media (prefers-reduced-motion: reduce) { #harmonic-space * { scroll-behavior: auto; } }