:root {
  --identifier-nav-height: 56px;
  --identifier-toolbar-height: 54px;
  --identifier-tier-1-bg: #d8f0e4;
  --identifier-tier-1-border: #388f66;
  --identifier-tier-2-bg: #e4f1e8;
  --identifier-tier-2-border: #69a47d;
  --identifier-tier-3-bg: #fff2c7;
  --identifier-tier-3-border: #d1a12e;
  --identifier-tier-4-bg: #eee0d6;
  --identifier-tier-4-border: #a06a47;
  --identifier-tier-5-bg: #e6e9eb;
  --identifier-tier-5-border: #8b949b;
  --identifier-overlay: rgb(5 8 10 / 76%);
  --identifier-panel-shadow: 0 28px 80px rgb(0 0 0 / 32%);
  --identifier-match-card-lightness: 88%;
  --identifier-match-border-lightness: 43%;
}

:root[data-theme="dark"] {
  --identifier-tier-1-bg: #10392d;
  --identifier-tier-1-border: #2a8e67;
  --identifier-tier-2-bg: #20382f;
  --identifier-tier-2-border: #4e8e70;
  --identifier-tier-3-bg: #463a1d;
  --identifier-tier-3-border: #b88a2c;
  --identifier-tier-4-bg: #382a23;
  --identifier-tier-4-border: #965f3a;
  --identifier-tier-5-bg: #1c2023;
  --identifier-tier-5-border: #343b40;
  --identifier-overlay: rgb(3 5 7 / 82%);
  --identifier-panel-shadow: 0 30px 90px rgb(0 0 0 / 58%);
  --identifier-match-card-lightness: 24%;
  --identifier-match-border-lightness: 44%;
}

.identifier-page {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background: var(--page-background);
  color: var(--text);
}

.identifier-page.identifier-modal-open {
  overflow: hidden;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  border: 0;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

/* Site navigation and tool-only sticky toolbar -------------------------- */

.identifier-site-nav {
  position: sticky;
  z-index: 90;
  top: 0;
  height: var(--identifier-nav-height);
  border-bottom: 1px solid var(--line);
  background: var(--header-background);
}

.identifier-site-nav-inner {
  display: flex;
  width: min(1440px, 100%);
  height: 100%;
  align-items: center;
  gap: 18px;
  margin: 0 auto;
  padding: 0 clamp(14px, 2.5vw, 32px);
}

.identifier-site-nav .brand-link {
  flex: 0 0 auto;
}

.identifier-site-nav .omni-library-tabs {
  min-width: 0;
}

.identifier-tool-toolbar {
  position: sticky;
  z-index: 80;
  top: var(--identifier-nav-height);
  min-height: var(--identifier-toolbar-height);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--header-background) 94%, transparent);
  box-shadow: 0 10px 24px rgb(0 0 0 / 8%);
  backdrop-filter: blur(16px);
}

.identifier-tool-toolbar-inner {
  display: flex;
  width: min(1440px, 100%);
  min-height: var(--identifier-toolbar-height);
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin: 0 auto;
  padding: 7px clamp(14px, 2.5vw, 32px);
}

.identifier-search-control {
  position: relative;
  display: block;
  width: min(380px, 100%);
  min-width: 0;
  flex: 0 1 auto;
}

.identifier-search-field {
  position: relative;
  display: block;
  width: 100%;
}

.identifier-search-control input {
  width: 100%;
  height: 34px;
  padding: 0 12px 0 34px;
  border: 1px solid transparent;
  border-radius: 9px;
  outline: 0;
  background: var(--surface-raised);
  color: var(--text);
  font: inherit;
  font-size: 11px;
  transition: border-color 140ms ease, background 140ms ease;
}

.identifier-search-control input:hover {
  border-color: var(--line);
}

.identifier-search-control input:focus-visible {
  border-color: var(--blue);
  background: var(--surface);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--blue) 14%, transparent);
}

.identifier-search-control input::placeholder {
  color: var(--muted);
}

.identifier-search-icon {
  position: absolute;
  z-index: 1;
  top: 50%;
  left: 13px;
  width: 10px;
  height: 10px;
  border: 1.5px solid var(--muted);
  border-radius: 50%;
  transform: translateY(-58%);
}

.identifier-search-icon::after {
  position: absolute;
  right: -4px;
  bottom: -3px;
  width: 5px;
  height: 1.5px;
  background: var(--muted);
  content: "";
  transform: rotate(45deg);
  transform-origin: left center;
}

.identifier-command-actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 8px;
}

/* Advanced Search suggestions ------------------------------------------- */

.identifier-search-results {
  position: absolute;
  z-index: 140;
  top: calc(100% + 12px);
  right: 0;
  left: 0;
  max-height: 320px;
  overflow-y: auto;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  box-shadow: 0 18px 44px rgb(0 0 0 / 34%);
  scrollbar-width: thin;
}

.identifier-search-results[hidden] {
  display: none;
}

.identifier-search-option {
  padding: 7px 10px;
  border-radius: 7px;
  color: var(--text);
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.identifier-search-option:hover,
.identifier-search-option.is-highlighted {
  background: color-mix(in srgb, var(--blue) 20%, var(--surface-raised));
  color: var(--strong-text);
}

.identifier-main-play {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  padding: 0;
  border: 1px solid color-mix(in srgb, var(--blue) 68%, white);
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  cursor: pointer;
  font: inherit;
  box-shadow: 0 7px 18px color-mix(in srgb, var(--blue) 28%, transparent);
  transition: transform 130ms ease, opacity 130ms ease;
}

.identifier-main-play span {
  margin-left: 2px;
  font-size: 12px;
}

.identifier-main-play:hover:not(:disabled) {
  transform: translateY(-1px);
}

.identifier-main-play:disabled {
  cursor: default;
  opacity: 0.35;
}

.identifier-command-actions .settings-menu {
  position: relative;
  top: auto;
  right: auto;
}

.identifier-command-actions .settings-menu-toggle {
  width: 38px;
  height: 38px;
  box-shadow: none;
}

.identifier-command-actions .settings-menu-popover {
  top: 45px;
  right: 0;
}

/* Workspace and pitch-class input --------------------------------------- */

.identifier-workspace {
  display: grid;
  gap: 16px;
  width: min(1440px, calc(100% - 28px));
  margin: 0 auto;
  padding: 24px 0 64px;
}

.identifier-input-section,
.identifier-instruments-section,
.identifier-results-section {
  min-width: 0;
  padding: clamp(16px, 2vw, 24px);
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  background: var(--surface);
}

.identifier-section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.identifier-section-heading h1,
.identifier-section-heading h2 {
  margin: 3px 0 0;
  color: var(--strong-text);
  font-size: clamp(20px, 2vw, 28px);
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.identifier-section-heading h2 {
  font-size: clamp(17px, 1.7vw, 22px);
}

.identifier-eyebrow {
  margin: 0;
  color: var(--blue);
  font-size: 9px;
  font-weight: 780;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.identifier-selection-status,
.identifier-results-count {
  max-width: min(44ch, 50vw);
  margin: 0;
  overflow: hidden;
  color: var(--muted);
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.identifier-note-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
}

.identifier-note-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(44px, 1fr));
  gap: clamp(5px, 0.7vw, 9px);
}

.identifier-note-button {
  width: 100%;
  min-width: 0;
  max-width: 72px;
  aspect-ratio: 1.18;
  place-self: center;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface-raised);
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: clamp(10px, 1vw, 13px);
  font-weight: 760;
  transition:
    border-color 120ms ease,
    background 120ms ease,
    box-shadow 120ms ease,
    color 120ms ease,
    transform 120ms ease;
}

.identifier-note-button:hover {
  border-color: color-mix(in srgb, var(--blue) 58%, var(--line));
  color: var(--text);
  transform: translateY(-1px);
}

.identifier-note-button.is-active {
  border-color: color-mix(in srgb, var(--blue) 74%, white);
  background: var(--blue);
  color: #fff;
  box-shadow:
    0 0 0 3px color-mix(in srgb, var(--blue) 16%, transparent),
    0 7px 18px color-mix(in srgb, var(--blue) 26%, transparent);
}

.identifier-clear-button {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 10px;
  font-weight: 720;
  white-space: nowrap;
}

.identifier-clear-button:hover:not(:disabled) {
  border-color: color-mix(in srgb, var(--danger) 56%, var(--line));
  color: var(--danger);
}

.identifier-clear-button:disabled {
  cursor: default;
  opacity: 0.35;
}

.identifier-main-play:focus-visible,
.identifier-clear-button:focus-visible,
.identifier-note-button:focus-visible,
.identifier-card:focus-visible,
.identifier-card-action:focus-visible,
#weak-matches-container summary:focus-visible,
.chord-analysis-close:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

/* Full-width instrument stages ------------------------------------------ */

.identifier-instruments-heading-row {
  margin-bottom: 12px;
}

.identifier-instrument-stage {
  display: block;
  width: 100%;
  min-width: 0;
  padding: 15px;
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  background: var(--surface-raised);
}

.identifier-instrument-stage + .identifier-instrument-stage {
  margin-top: 12px;
}

.identifier-instrument-stage-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.identifier-instrument-stage h3 {
  margin: 0;
  color: var(--muted);
  font-size: 10px;
  font-weight: 780;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

#identifier-fretboard-mount,
#identifier-piano-mount {
  display: block;
  width: 100%;
  min-width: 0;
}

#identifier-fretboard-mount {
  min-height: 250px;
}

#identifier-piano-mount {
  min-height: 170px;
}

.identifier-instrument-input {
  cursor: pointer;
}

.identifier-instrument-input:hover {
  filter: brightness(1.06);
}

/* Compact heatmap result cards ------------------------------------------ */

#identifier-results-grid,
#weak-results-grid,
.identifier-results-layout,
.identifier-weak-content {
  display: grid;
  min-width: 0;
  gap: 16px;
}

.identifier-tier-group {
  min-width: 0;
}

.identifier-tier-heading {
  margin: 0 0 7px;
  color: var(--muted);
  font-size: 9px;
  font-weight: 780;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.identifier-tier-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  grid-auto-rows: 46px;
  align-items: center;
  gap: 4px 9px;
  padding: 3px 12px;
}

.identifier-card,
.identifier-page .identifier-card {
  position: relative;
  z-index: 1;
  display: flex;
  width: 100%;
  min-width: 0;
  height: 38px;
  min-height: 38px;
  align-items: center;
  flex-direction: row;
  justify-content: space-between;
  gap: 7px;
  padding: 0 8px 0 10px;
  overflow: visible;
  border: 1px solid hsl(
    var(--match-hue) 58% var(--identifier-match-border-lightness)
  );
  border-radius: 8px;
  background: hsl(
    var(--match-hue) 48% var(--identifier-match-card-lightness)
  );
  cursor: pointer;
  box-shadow: none;
  transform: scale(var(--match-scale, 1));
  transform-origin: center;
  transition: filter 120ms ease, transform 120ms ease;
}

.identifier-card:hover {
  z-index: 12;
  box-shadow: none;
  filter: brightness(1.12) saturate(1.08);
  transform: scale(var(--match-scale, 1));
}

.identifier-card:has(.identifier-info-control:hover),
.identifier-card:has(.identifier-info-control:focus-within) {
  z-index: 30;
}

.identifier-card-featured {
  grid-column: auto;
}

.identifier-card.tier-1-match {
  border-color: hsl(var(--match-hue) 58% var(--identifier-match-border-lightness));
  background: hsl(var(--match-hue) 48% var(--identifier-match-card-lightness));
}

.identifier-card.tier-2-match {
  border-color: hsl(var(--match-hue) 58% var(--identifier-match-border-lightness));
  background: hsl(var(--match-hue) 48% var(--identifier-match-card-lightness));
}

.identifier-card.tier-3-match {
  border-color: hsl(var(--match-hue) 58% var(--identifier-match-border-lightness));
  background: hsl(var(--match-hue) 48% var(--identifier-match-card-lightness));
}

.identifier-card.tier-4-match {
  border-color: hsl(var(--match-hue) 58% var(--identifier-match-border-lightness));
  background: hsl(var(--match-hue) 48% var(--identifier-match-card-lightness));
}

.identifier-card.tier-5-match {
  border-color: hsl(var(--match-hue) 58% var(--identifier-match-border-lightness));
  background: hsl(var(--match-hue) 48% var(--identifier-match-card-lightness));
  opacity: 1;
}

.identifier-card-header {
  display: flex;
  min-width: 0;
  align-items: flex-start;
  justify-content: space-between;
  gap: 7px;
}

.identifier-card-heading {
  min-width: 0;
  overflow: hidden;
}

/* The card itself is transform: scale(var(--match-scale)) (0.85 for the
   weakest match up to 1.10 for a perfect one), so this single base size
   already renders proportionally smaller on lower-scoring cards. */
.identifier-card-title {
  margin: 0;
  overflow: hidden;
  color: var(--strong-text);
  font-size: 14px;
  font-weight: 780;
  line-height: 1.2;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.identifier-card-actions {
  display: flex;
  flex: 0 0 auto;
  gap: 2px;
}

.identifier-card-action {
  display: inline-grid;
  width: 21px;
  height: 21px;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: color-mix(in srgb, var(--text) 62%, transparent);
  cursor: pointer;
  font: inherit;
  font-size: 8px;
  font-weight: 760;
}

.identifier-card-action:hover {
  background: color-mix(in srgb, var(--surface) 74%, transparent);
  color: var(--text);
}

/* Dual-core engine switch ------------------------------------------------ */

.identifier-results-heading-controls {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 14px;
}

.engine-mode-toggle {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 78%, #000);
  transition: all 0.3s ease;
}

.engine-mode-slider {
  position: absolute;
  z-index: 0;
  top: 3px;
  bottom: 3px;
  left: 3px;
  width: calc((100% - 6px) / 2);
  border-radius: 999px;
  transform: translateX(calc(var(--engine-slider-index, 0) * 100%));
  transition: all 0.3s ease;
}

/* Musical: warm violet glow. */
.engine-mode-toggle[data-engine-mode="musical"] {
  border-color: color-mix(in srgb, #8b5cf6 48%, var(--line));
}

.engine-mode-toggle[data-engine-mode="musical"] .engine-mode-slider {
  background: linear-gradient(135deg, #8b5cf6, #6d28d9);
  box-shadow:
    0 0 16px color-mix(in srgb, #8b5cf6 52%, transparent),
    inset 0 1px 0 color-mix(in srgb, #fff 26%, transparent);
}

/* Analytic: clinical electric cyan. */
.engine-mode-toggle[data-engine-mode="analytic"] {
  border-color: color-mix(in srgb, #22d3ee 52%, var(--line));
}

.engine-mode-toggle[data-engine-mode="analytic"] .engine-mode-slider {
  background: linear-gradient(135deg, #22d3ee, #0284c7);
  box-shadow:
    0 0 16px color-mix(in srgb, #22d3ee 55%, transparent),
    inset 0 1px 0 color-mix(in srgb, #fff 30%, transparent);
}

.engine-mode-option {
  position: relative;
  z-index: 1;
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0 16px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 11px;
  font-weight: 780;
  letter-spacing: .01em;
  white-space: nowrap;
  transition: all 0.3s ease;
}

.engine-mode-option:hover:not(.is-active) {
  color: var(--text);
}

.engine-mode-option.is-active {
  color: #fff;
  text-shadow: 0 1px 2px rgb(0 0 0 / 34%);
}

.engine-mode-option:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

/* Semantic deviation cues -----------------------------------------------

   Every accent is drawn with inset box-shadow rather than a real border so
   the card's box size never changes and the uniform tier grid stays intact. */

/* Typographic sibling of the (i) button: bare coloured glyph, no chip behind
   it. Auto-width so the parenthesised tokens never clip. */
.identifier-deviation-badge {
  display: inline-grid;
  height: 20px;
  flex: 0 0 auto;
  place-items: center;
  font-size: 13px;
  font-weight: 820;
  line-height: 1;
  letter-spacing: -.03em;
  user-select: none;
}

.identifier-deviation-badge[data-deviation="additive"] {
  color: #f5a623;
}

.identifier-deviation-badge[data-deviation="subtractive"] {
  color: #4a90e2;
}

.identifier-deviation-badge[data-deviation="rootless"] {
  color: #e67e22;
}

.identifier-deviation-badge[data-deviation="mixed"] {
  color: #a78bfa;
}

/* exact: clean baseline, no accent at all. */
.identifier-card.dev-exact {
  box-shadow: none;
}

/* additive: solid gold edge, drawn inside the card only. An outer glow here
   used to bleed a warm halo around the card, which read as a lighter, washed
   out tone next to the subtractive cards. */
.identifier-card.dev-additive {
  box-shadow: inset 3px 0 0 0 #f5a623;
}

/* subtractive: dashed cyan edge, faked with a repeating gradient so the
   dashes render inside the existing rounded box. */
.identifier-card.dev-subtractive {
  background-image: repeating-linear-gradient(
    to bottom,
    #4a90e2 0 5px,
    transparent 5px 10px
  );
  background-repeat: no-repeat;
  background-size: 3px 100%;
  background-position: left center;
}

/* rootless: amber glow rising from the bottom edge. */
.identifier-card.dev-rootless {
  box-shadow:
    inset 0 -7px 9px -6px #e67e22,
    inset 0 -2px 0 0 color-mix(in srgb, #e67e22 72%, transparent);
}

/* mixed: no edge accent and no fading — every card keeps the full-strength
   tier border, background, and text. The (~) badge carries the meaning. */

/* The accordion summary already names this tier. */
.identifier-weak-content .identifier-tier-heading {
  display: none;
}

/* Structured custom tooltip; no native title attribute. */

.identifier-info-control {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.identifier-match-tooltip {
  position: absolute;
  z-index: 50;
  top: auto;
  right: -2px;
  bottom: calc(100% + 7px);
  width: 224px;
  padding: 11px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 16px 38px rgb(0 0 0 / 34%);
  opacity: 0;
  pointer-events: none;
  transform: translateY(4px);
  visibility: hidden;
  transition: opacity 110ms ease, transform 110ms ease, visibility 110ms ease;
}

.identifier-info-control:hover .identifier-match-tooltip,
.identifier-info-control:focus-within .identifier-match-tooltip {
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
}

.identifier-tooltip-heading {
  margin: 0 0 8px;
  color: var(--strong-text);
  font-size: 10px;
  font-weight: 780;
}

.identifier-tooltip-group {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  align-items: start;
  gap: 8px;
  padding: 7px 0;
  border-top: 1px solid var(--line-soft);
}

.identifier-tooltip-label {
  color: var(--muted);
  font-size: 8px;
  font-weight: 760;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.identifier-tooltip-values {
  margin: 0;
  color: var(--text);
  font-size: 9px;
  line-height: 1.45;
}

.identifier-tooltip-values.is-missing {
  color: var(--orange);
}

.identifier-tooltip-values.is-extra {
  color: var(--danger);
}

/* Tinted with the card's own tier hue so the score reads as the headline
   number of the tooltip. */
.identifier-tooltip-values.is-score {
  color: hsl(var(--match-hue, 210) 72% 54%);
  font-size: 11px;
  font-weight: 860;
  letter-spacing: .01em;
}

.identifier-tooltip-exact {
  margin: 0;
  color: var(--success);
  font-size: 9px;
  font-weight: 700;
}

.identifier-tooltip-rootless {
  margin: 0 0 8px;
  padding: 5px 7px;
  border: 1px solid color-mix(in srgb, var(--danger) 54%, var(--line));
  border-radius: 6px;
  background: var(--danger-soft);
  color: var(--danger);
  font-size: 8px;
  font-weight: 760;
}

#weak-matches-container {
  margin-top: 16px;
  padding-top: 4px;
  border-top: 1px solid var(--line-soft);
}

#weak-matches-container[hidden] {
  display: none;
}

#weak-matches-container > summary {
  width: fit-content;
  padding: 8px 2px;
  color: var(--muted);
  cursor: pointer;
  font-size: 10px;
  font-weight: 720;
}

#weak-results-grid {
  padding-top: 10px;
}

.identifier-empty-message {
  margin: 0;
  padding: 22px;
  color: var(--muted);
  font-size: 11px;
  text-align: center;
}

/* Centered Harmonic Anatomy modal --------------------------------------- */

#chord-analysis-mount {
  position: fixed;
  z-index: 200;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  overflow-y: auto;
  background: var(--identifier-overlay);
  backdrop-filter: blur(9px);
}

#chord-analysis-mount[hidden] {
  display: none;
}

.chord-analysis-dialog {
  width: min(940px, 100%);
  max-height: calc(100vh - 48px);
  overflow-y: auto;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  box-shadow: var(--identifier-panel-shadow);
}

.chord-analysis-dialog-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 17px 18px 14px;
  border-bottom: 1px solid var(--line-soft);
}

.chord-analysis-dialog-eyebrow {
  margin: 0 0 4px;
  color: var(--blue);
  font-size: 8px;
  font-weight: 780;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.chord-analysis-dialog-title {
  margin: 0;
  color: var(--strong-text);
  font-size: 20px;
  letter-spacing: -0.02em;
}

.chord-analysis-dialog-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.rootless-warning-badge {
  width: fit-content;
  margin: 0;
  padding: 4px 7px;
  border: 1px solid color-mix(in srgb, var(--danger) 56%, var(--line));
  border-radius: 999px;
  background: var(--danger-soft);
  color: var(--danger);
  font-size: 8px;
  font-weight: 760;
}

.chord-analysis-inversion-badge {
  width: fit-content;
  padding: 4px 7px;
  border: 1px solid color-mix(in srgb, var(--blue) 44%, var(--line));
  border-radius: 999px;
  color: var(--blue);
  font-size: 8px;
  font-weight: 760;
}

.chord-analysis-close {
  display: grid;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  place-items: center;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--surface-raised);
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 17px;
}

.chord-analysis-close:hover {
  border-color: var(--danger);
  color: var(--danger);
}

.chord-analysis-dialog-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  gap: 14px;
  padding: 16px;
}

.chord-evolution-panel {
  min-width: 0;
}

.chord-evolution-heading {
  margin: 0 0 10px;
  color: var(--strong-text);
  font-size: 13px;
  font-weight: 760;
}

.chord-evolution-stack {
  display: grid;
  gap: 7px;
}

.chord-evolution-layer {
  display: grid;
  min-height: 72px;
  grid-template-columns: 122px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.chord-evolution-layer.is-extensions {
  border-color: color-mix(in srgb, #8b6de8 48%, var(--line));
  background: color-mix(in srgb, #8b6de8 10%, var(--surface-raised));
}

.chord-evolution-layer.is-shell {
  border-color: color-mix(in srgb, #d59a32 50%, var(--line));
  background: color-mix(in srgb, #d59a32 11%, var(--surface-raised));
}

.chord-evolution-layer.is-triad {
  border-color: color-mix(in srgb, var(--success) 48%, var(--line));
  background: color-mix(in srgb, var(--success) 9%, var(--surface-raised));
}

.chord-evolution-layer.is-bass {
  border-color: color-mix(in srgb, #2aa7a0 52%, var(--line));
  background: color-mix(in srgb, #2aa7a0 11%, var(--surface-raised));
}

.chord-evolution-layer-label {
  display: grid;
  gap: 2px;
}

.chord-evolution-layer-index {
  color: var(--muted);
  font-size: 7px;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.chord-evolution-layer-name {
  color: var(--strong-text);
  font-size: 11px;
  font-weight: 760;
}

.chord-evolution-tones {
  display: flex;
  min-width: 0;
  flex-wrap: wrap;
  gap: 5px;
}

.chord-evolution-tone {
  display: grid;
  min-width: 46px;
  gap: 1px;
  padding: 5px 7px;
  border: 1px solid transparent;
  border-radius: 7px;
}

.chord-evolution-tone-interval {
  font-size: 7px;
  font-weight: 780;
}

.chord-evolution-tone-note {
  font-size: 12px;
  line-height: 1;
}

.chord-evolution-tone.is-matched {
  border-color: color-mix(in srgb, var(--success) 58%, var(--line));
  background: var(--success-soft);
  color: var(--success);
}

.chord-evolution-tone.is-missing {
  border-color: var(--line);
  border-style: dashed;
  background: transparent;
  color: var(--muted);
  opacity: 0.6;
}

.chord-evolution-tone.is-extra {
  border-color: color-mix(in srgb, var(--danger) 58%, var(--line));
  background: var(--danger-soft);
  color: var(--danger);
}

.chord-evolution-empty {
  color: var(--muted);
  font-size: 10px;
  opacity: 0.68;
}

.chord-match-profile {
  align-self: start;
  min-width: 0;
  padding: 13px;
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  background: var(--surface-raised);
}

.chord-match-profile-eyebrow {
  color: var(--blue);
  font-size: 8px;
  font-weight: 780;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.chord-match-profile-title {
  margin: 4px 0 11px;
  overflow: hidden;
  color: var(--strong-text);
  font-size: 16px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chord-match-profile-list {
  display: grid;
  grid-template-columns: minmax(72px, auto) minmax(0, 1fr);
  margin: 0;
  border-top: 1px solid var(--line-soft);
}

.chord-match-profile-list dt,
.chord-match-profile-list dd {
  margin: 0;
  padding: 8px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 9px;
}

.chord-match-profile-list dt {
  color: var(--muted);
}

.chord-match-profile-list dd {
  overflow-wrap: anywhere;
  color: var(--strong-text);
  font-weight: 720;
  text-align: right;
}

.chord-match-profile-binary {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.chord-show-in-library {
  display: flex;
  min-height: 36px;
  align-items: center;
  justify-content: center;
  margin-top: 12px;
  padding: 0 12px;
  border: 1px solid color-mix(in srgb, var(--blue) 68%, var(--line));
  border-radius: 8px;
  background: var(--blue);
  color: #fff;
  font-size: 10px;
  font-weight: 780;
  text-decoration: none;
}

.chord-show-in-library:hover {
  filter: brightness(1.08);
}

.chord-show-in-library:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

@media (max-width: 920px) {
  .identifier-note-grid {
    grid-template-columns: repeat(6, minmax(44px, 1fr));
  }

  .identifier-note-button {
    max-width: 68px;
  }

  .chord-analysis-dialog-body {
    grid-template-columns: 1fr;
  }

  .chord-match-profile {
    width: 100%;
  }
}

@media (max-width: 640px) {
  :root {
    --identifier-nav-height: 92px;
  }

  .identifier-site-nav {
    height: var(--identifier-nav-height);
  }

  .identifier-site-nav-inner {
    align-content: center;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
  }

  .identifier-site-nav .omni-library-tabs {
    padding-left: 0;
    border-left: 0;
  }

  .identifier-tool-toolbar-inner {
    gap: 10px;
  }

  .identifier-workspace {
    width: min(100% - 16px, 1440px);
    padding-top: 12px;
  }

  .identifier-input-section,
  .identifier-instruments-section,
  .identifier-results-section {
    padding: 14px;
    border-radius: 11px;
  }

  .identifier-section-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .identifier-selection-status,
  .identifier-results-count {
    max-width: 100%;
  }

  .identifier-note-controls {
    grid-template-columns: 1fr;
  }

  .identifier-clear-button {
    justify-self: end;
  }

  #identifier-fretboard-mount {
    min-height: 210px;
  }

  #identifier-piano-mount {
    min-height: 145px;
  }

  .identifier-tier-grid {
    grid-template-columns: repeat(auto-fill, minmax(152px, 1fr));
  }

  #chord-analysis-mount {
    align-items: end;
    padding: 0;
  }

  .chord-analysis-dialog {
    width: 100%;
    max-height: calc(100vh - 18px);
    border-right: 0;
    border-bottom: 0;
    border-left: 0;
    border-radius: 16px 16px 0 0;
  }

  .chord-evolution-layer {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 430px) {
  .identifier-tool-toolbar-inner {
    align-items: stretch;
  }

  .identifier-search-control {
    flex: 1 1 auto;
  }

  .identifier-main-play,
  .identifier-command-actions .settings-menu-toggle {
    width: 36px;
    height: 36px;
  }

  .identifier-note-grid {
    grid-template-columns: repeat(4, minmax(42px, 1fr));
  }

  .identifier-tier-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .identifier-card,
  .identifier-page .identifier-card {
    height: 31px;
    min-height: 31px;
  }

  .identifier-match-tooltip {
    right: -30px;
    width: min(238px, calc(100vw - 36px));
  }
}

/* Identifier 2.0: Library toolbar, push sidebar, and responsive surfaces. */

.identifier-site-nav {
  position: relative;
}

.identifier-tool-toolbar {
  z-index: 100;
  top: 0;
}

.identifier-tool-toolbar-inner {
  width: 100%;
}

.identifier-command-actions {
  min-width: 0;
}

.identifier-playback-controls {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 8px;
}

.identifier-playback-controls .playback-field {
  min-width: 112px;
}

.identifier-playback-controls .playback-field > span:first-child {
  font-size: 7px;
}

.identifier-playback-controls select {
  min-height: 30px;
  font-size: 9px;
}

.identifier-notation-toggle,
.identifier-sidebar-close {
  border: 1px solid var(--line);
  background: var(--surface-raised);
  color: var(--muted);
  cursor: pointer;
  font: inherit;
}

/* Deliberately off-palette (violet/magenta) so the Notation toggle reads as a
   distinct action against the blue-dominant identifier chrome. */
.identifier-notation-toggle {
  --notation-accent: #8b5cf6;
  --notation-accent-end: #d946ef;

  display: inline-flex;
  min-height: 42px;
  align-items: center;
  gap: 8px;
  padding: 0 20px;
  border-color: transparent;
  border-radius: 11px;
  background: linear-gradient(
    135deg,
    var(--notation-accent),
    var(--notation-accent-end)
  );
  color: #fff;
  font-size: 12.5px;
  font-weight: 820;
  letter-spacing: .02em;
  white-space: nowrap;
  box-shadow: 0 6px 18px color-mix(in srgb, var(--notation-accent) 42%, transparent);
  transition: filter 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

.identifier-notation-toggle > span[aria-hidden="true"] {
  font-size: 17px;
  line-height: 1;
}

.identifier-notation-toggle:hover {
  border-color: transparent;
  color: #fff;
  background: linear-gradient(
    135deg,
    var(--notation-accent),
    var(--notation-accent-end)
  );
  box-shadow: 0 9px 24px color-mix(in srgb, var(--notation-accent) 58%, transparent);
  filter: brightness(1.08) saturate(1.06);
  transform: translateY(-1px);
}

.identifier-notation-toggle.is-active {
  border-color: transparent;
  color: #fff;
  background: linear-gradient(135deg, #7c3aed, #c026d3);
  box-shadow:
    0 6px 18px color-mix(in srgb, var(--notation-accent) 46%, transparent),
    0 0 0 3px color-mix(in srgb, var(--notation-accent) 28%, transparent);
}

.identifier-floating-play {
  position: fixed;
  z-index: 115;
  right: clamp(18px, 2.5vw, 34px);
  bottom: clamp(18px, 3vw, 34px);
  width: 56px;
  height: 56px;
  border-width: 2px;
  box-shadow:
    0 14px 34px color-mix(in srgb, var(--blue) 36%, transparent),
    0 0 0 6px color-mix(in srgb, var(--blue) 10%, transparent);
}

.identifier-floating-play span {
  font-size: 16px;
}

.identifier-app-shell {
  display: grid;
  min-width: 0;
  grid-template-columns: 0 minmax(0, 1fr);
  align-items: start;
  transition: grid-template-columns 240ms cubic-bezier(.2, .75, .25, 1);
}

.identifier-app-shell.is-sidebar-open {
  grid-template-columns: clamp(248px, 22vw, 310px) minmax(0, 1fr);
}

.identifier-notation-sidebar {
  position: relative;
  z-index: 20;
  width: 100%;
  min-width: 0;
  height: 100%;
  overflow: hidden;
  border-right: 0 solid var(--line);
  background: var(--surface);
  opacity: 0;
  pointer-events: none;
  transition: opacity 150ms ease, border-width 180ms ease;
}

.identifier-app-shell.is-sidebar-open .identifier-notation-sidebar {
  border-right-width: 1px;
  opacity: 1;
  pointer-events: auto;
}

.identifier-sidebar-inner {
  position: sticky;
  top: var(--identifier-toolbar-height);
  width: clamp(248px, 22vw, 310px);
  height: calc(100vh - var(--identifier-toolbar-height));
  padding: 16px 12px 28px;
  overflow-x: hidden;
  overflow-y: auto;
}

.identifier-sidebar-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  padding: 0 4px 12px;
  border-bottom: 1px solid var(--line-soft);
}

.identifier-sidebar-header h2 {
  margin: 3px 0 0;
  color: var(--strong-text);
  font-size: 16px;
}

.identifier-sidebar-close {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  padding: 0;
  border-radius: 50%;
  font-size: 16px;
}

.identifier-sidebar-panel {
  margin-top: 12px;
  padding: 11px;
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  background: var(--surface-raised);
}

.identifier-sidebar-panel h3 {
  margin: 0 0 9px;
  color: var(--muted);
  font-size: 8px;
  font-weight: 780;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.identifier-sidebar-empty {
  margin: 0;
  color: var(--muted);
  font-size: 9px;
  line-height: 1.5;
}

.identifier-sidebar-diagram,
.identifier-sidebar-staff {
  width: 100%;
  min-height: 104px;
  overflow: hidden;
}

.identifier-mini-chord-diagram,
.identifier-sidebar-staff svg {
  display: block;
  width: 100%;
  height: auto;
}

.identifier-diagram-shape {
  fill: var(--muted);
  font-size: 9px;
  font-weight: 700;
}

.identifier-sidebar-tab {
  margin: 0;
  overflow-x: auto;
  color: var(--strong-text);
  font: 700 14px/1.6 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: .02em;
  scrollbar-width: thin;
}

.identifier-workspace {
  min-width: 0;
}

.identifier-note-choice {
  position: relative;
  display: grid;
  min-width: 0;
  place-items: center;
}

.identifier-note-choice .identifier-note-button {
  max-width: none;
}

.identifier-root-lock {
  position: absolute;
  z-index: 3;
  right: 5px;
  bottom: 5px;
  left: 5px;
  min-height: 18px;
  padding: 1px 3px;
  border: 1px solid color-mix(in srgb, #9d78ff 58%, var(--line));
  border-radius: 6px;
  background: color-mix(in srgb, #6f45d8 88%, var(--surface));
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-size: clamp(5px, .48vw, 7px);
  font-weight: 780;
  line-height: 1;
  opacity: 0;
  pointer-events: none;
  transform: translateY(4px);
  transition: opacity 110ms ease, transform 110ms ease;
}

.identifier-note-choice:hover .identifier-root-lock,
.identifier-note-choice:focus-within .identifier-root-lock,
.identifier-root-lock.is-locked {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.identifier-note-choice.has-locked-root .identifier-note-button {
  border-color: #9d78ff;
  box-shadow: 0 0 0 3px rgb(128 85 238 / 20%);
}

#identifier-fretboard-mount,
#identifier-piano-mount {
  min-height: 0;
}

.fretboard-control-bar {
  display: flex;
  min-width: 0;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  padding: 4px;
}

.fretboard-control-bar > .fretboard-voicing-browser,
.fretboard-control-bar > .fretboard-capo-control {
  grid-area: auto;
}

.identifier-position-browser {
  flex: 1 1 auto;
}

.identifier-position-browser > summary {
  padding-right: 10px;
}

.identifier-guitar-controls {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 10px;
}

.identifier-instrument-switch {
  min-height: 30px;
  gap: 6px;
  color: var(--muted);
  font-size: 8px;
  font-weight: 700;
  white-space: nowrap;
}

.identifier-scaled-instrument-frame {
  position: relative;
  width: 100%;
  min-width: 0;
  height: var(--identifier-scaled-height, auto);
  overflow: hidden;
  transition: height 180ms ease;
}

.identifier-scaled-instrument-frame > .fretboard-grid,
.identifier-scaled-instrument-frame > .piano-keyboard {
  transform: scale(var(--identifier-instrument-scale, 1));
  transform-origin: top left;
}

.identifier-piano-control-bar {
  display: flex;
  min-height: 34px;
  align-items: center;
  justify-content: flex-end;
  margin-bottom: 8px;
  padding: 3px 8px;
  border: 1px solid var(--line-soft);
  border-radius: 5px;
  background: var(--surface-raised);
}

.identifier-piano-frame.is-scroll-mode {
  height: 176px;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: thin;
}

.identifier-piano-frame.is-scroll-mode > .piano-keyboard {
  transform: none;
}

.identifier-card.best-match {
  border-color: #9d78ff;
  background: color-mix(in srgb, #6f45d8 66%, var(--surface));
  box-shadow: 0 0 0 1px rgb(157 120 255 / 25%);
}

.identifier-card.strong-match {
  border-color: #2f9b69;
  background: color-mix(in srgb, #0d5a3b 72%, var(--surface));
}

.identifier-card.partial-match {
  border-color: hsl(var(--match-hue) 58% var(--identifier-match-border-lightness));
  background: hsl(var(--match-hue) 48% var(--identifier-match-card-lightness));
}

.identifier-best-match-group .identifier-tier-grid {
  grid-template-columns: minmax(190px, 340px);
}

.identifier-info-button,
.identifier-page .identifier-info-button {
  width: 28px;
  height: 28px;
  font-size: 13px;
  font-weight: 820;
}

.identifier-card,
.identifier-page .identifier-card {
  height: 38px;
  min-height: 38px;
  padding-left: 10px;
}

.identifier-tier-grid {
  grid-auto-rows: 47px;
}

.chord-analysis-dialog {
  width: min(1180px, calc(100vw - 32px));
}

.chord-analysis-dialog-body {
  grid-template-columns: minmax(0, 1.08fr) minmax(350px, .92fr);
  align-items: start;
}

.chord-match-profile {
  max-height: min(72vh, 720px);
  overflow-y: auto;
  scrollbar-width: thin;
}

.match-profile-detail-section {
  margin-top: 13px;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
}

.match-profile-detail-section h4 {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.match-profile-interval-list {
  display: grid;
  gap: 5px;
}

.match-profile-interval-row {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  padding: 7px;
  border: 1px solid var(--line-soft);
  border-radius: 7px;
  background: color-mix(in srgb, var(--surface-raised) 78%, transparent);
}

.match-profile-interval-token {
  display: grid;
  min-height: 26px;
  place-items: center;
  border-radius: 6px;
  background: color-mix(in srgb, var(--blue) 18%, var(--surface));
  color: var(--strong-text);
  font-size: 9px;
  font-weight: 820;
}

.match-profile-interval-description {
  display: grid;
  min-width: 0;
  gap: 2px;
}

.match-profile-interval-description strong {
  overflow: hidden;
  color: var(--strong-text);
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.match-profile-interval-description small,
.match-profile-interval-status {
  color: var(--muted);
  font-size: 7px;
}

.match-profile-interval-status {
  font-weight: 780;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.match-profile-interval-row.is-missing .match-profile-interval-token,
.match-profile-interval-row.is-missing .match-profile-interval-status {
  color: var(--orange);
}

.match-profile-interval-row.is-extra .match-profile-interval-token,
.match-profile-interval-row.is-extra .match-profile-interval-status {
  color: var(--danger);
}

.match-profile-score-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  margin: 0;
}

.match-profile-score-list dt,
.match-profile-score-list dd {
  margin: 0;
  padding: 6px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 8px;
}

.match-profile-score-list dt {
  color: var(--muted);
}

.match-profile-score-list dd {
  color: var(--strong-text);
  font-weight: 760;
  text-align: right;
}

.match-profile-final-score {
  color: var(--blue) !important;
  font-size: 11px !important;
}

/* Signed terms of the weighted-IoU ratio. */
.match-profile-score-hit {
  color: var(--success) !important;
}

.match-profile-score-miss {
  color: var(--orange) !important;
}

.match-profile-score-extra {
  color: var(--danger) !important;
}

.chord-analysis-root-lock-badge {
  border: 1px solid rgb(157 120 255 / 58%);
  border-radius: 999px;
  padding: 4px 7px;
  background: rgb(111 69 216 / 16%);
  color: #bca7ff;
  font-size: 8px;
  font-weight: 760;
}

@media (max-width: 980px) {
  .identifier-tool-toolbar-inner {
    gap: 8px;
  }

  .identifier-search-control {
    width: min(360px, 100%);
  }

  .identifier-playback-controls .playback-field {
    min-width: 92px;
  }

  .chord-analysis-dialog-body {
    grid-template-columns: 1fr;
  }

  .chord-match-profile {
    max-height: none;
  }
}

@media (max-width: 760px) {
  .identifier-app-shell.is-sidebar-open {
    grid-template-columns: 220px minmax(320px, 1fr);
  }

  .identifier-sidebar-inner {
    width: 220px;
  }

  .identifier-command-actions {
    gap: 5px;
  }

  .identifier-notation-toggle {
    width: 34px;
    padding: 0;
    justify-content: center;
    font-size: 0;
  }

  .identifier-notation-toggle span {
    font-size: 13px;
  }

  .identifier-playback-controls .playback-field > span:first-child {
    display: none;
  }

  .identifier-playback-controls .playback-field {
    min-width: 78px;
  }

  .identifier-playback-controls .preview-switch > span:last-child {
    display: none;
  }

  .identifier-guitar-controls {
    align-items: flex-end;
    flex-direction: column-reverse;
  }
}

@media (max-width: 560px) {
  .identifier-tool-toolbar-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .identifier-search-control {
    grid-column: 1 / -1;
    width: 100%;
  }

  .identifier-command-actions {
    grid-column: 1 / -1;
    justify-content: flex-end;
  }

  .identifier-note-grid {
    gap: 8px;
  }

  .identifier-root-lock {
    font-size: 6px;
  }

  .identifier-floating-play {
    right: 16px;
    bottom: 16px;
    width: 50px;
    height: 50px;
  }
}

/* Identifier 2.1 feedback pass ----------------------------------------- */

:root {
  --identifier-toolbar-height: 60px;
}

.identifier-site-nav {
  position: sticky;
  z-index: 110;
  top: 0;
}

.identifier-tool-toolbar {
  position: sticky;
  z-index: 105;
  top: var(--identifier-nav-height);
  box-shadow: none;
}

.identifier-tool-toolbar-inner {
  display: grid;
  min-height: var(--identifier-toolbar-height);
  grid-template-columns: minmax(260px, 1fr) auto minmax(430px, 1fr);
  gap: 14px;
}

.identifier-search-control {
  align-self: center;
  justify-self: start;
  padding-bottom: 11px;
}

.identifier-search-control input {
  height: 32px;
}

.identifier-search-selection {
  position: absolute;
  right: 4px;
  bottom: -1px;
  left: 4px;
  overflow: hidden;
  color: var(--muted);
  font-size: 7px;
  font-weight: 650;
  line-height: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.identifier-search-selection[data-state="selected"] {
  color: var(--blue);
}

.identifier-toolbar-center {
  display: flex;
  align-items: center;
  justify-content: center;
  justify-self: center;
}

.identifier-toolbar-center[hidden] {
  display: none;
}

.identifier-command-actions {
  justify-self: end;
}

.identifier-sidebar-inner {
  top: calc(var(--identifier-nav-height) + var(--identifier-toolbar-height));
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: calc(100vh - var(--identifier-nav-height) - var(--identifier-toolbar-height));
  max-height: calc(100vh - var(--identifier-nav-height) - var(--identifier-toolbar-height));
  padding: 10px;
  /* Scroll rather than silently clipping panels on short viewports. */
  overflow-y: auto;
  scrollbar-width: thin;
}

.identifier-notation-sidebar {
  height: calc(100vh - var(--identifier-nav-height) - var(--identifier-toolbar-height));
  max-height: calc(100vh - var(--identifier-nav-height) - var(--identifier-toolbar-height));
  align-self: start;
  overflow: hidden;
}

.identifier-sidebar-header {
  flex: 0 0 auto;
  padding: 0 2px 8px;
}

.identifier-sidebar-panel {
  flex: 0 0 auto;
  margin: 0;
  padding: 8px;
}

.identifier-sidebar-panel h3 {
  margin-bottom: 6px;
}

.identifier-sidebar-panel:last-child {
  margin-bottom: 0;
}

.identifier-sidebar-diagram {
  min-height: 0;
}

.identifier-mini-chord-diagram {
  width: 100%;
  height: 190px;
}

.identifier-sidebar-staff {
  min-height: 0;
  height: 148px;
}

.identifier-sidebar-staff svg {
  width: 100%;
  height: 148px !important;
}

.identifier-sidebar-tab {
  max-height: none;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.6;
}

.identifier-sidebar-diagram-navigation {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) 30px;
  align-items: center;
  gap: 7px;
  margin-top: 4px;
  padding-top: 5px;
  border-top: 1px solid var(--line-soft);
}

@media (max-height: 740px) and (min-width: 821px) {
  .identifier-mini-chord-diagram {
    height: 154px;
  }

  .identifier-sidebar-staff,
  .identifier-sidebar-staff svg {
    height: 118px !important;
  }

  .identifier-sidebar-tab {
    max-height: none;
    font-size: 12px;
  }
}

.identifier-sidebar-diagram-navigation .diagram-arrow {
  min-width: 30px;
  min-height: 28px;
}

.identifier-sidebar-diagram-navigation .diagram-voicing-counter input {
  width: 48px;
  min-height: 26px;
  font-size: 9px;
}

.identifier-sidebar-diagram-navigation .diagram-voicing-counter {
  color: var(--muted);
  font-size: 8px;
}

.identifier-guitar-frame {
  height: auto !important;
  min-height: 0;
  overflow: hidden;
}

.identifier-guitar-frame > .fretboard-grid {
  transform: none !important;
}

.identifier-library-fretboard {
  table-layout: fixed;
}

.identifier-library-fretboard .fret-cell,
.identifier-library-fretboard .fret-label {
  min-width: 0;
}

.identifier-library-fretboard.is-compact-guitar .fret-label {
  font-size: 7px;
}

.identifier-guitar-controls {
  position: relative;
  z-index: 4;
  align-self: flex-start;
  margin-left: auto;
}

.identifier-position-browser {
  min-width: 0;
  flex: 1 1 auto;
}

.identifier-position-browser[open] .fretboard-voicing-strip {
  padding-right: 8px;
}

.identifier-instrument-collapse {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
  font: inherit;
  font-weight: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
}

.identifier-collapse-glyph {
  display: grid;
  width: 18px;
  height: 18px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--blue);
  font-size: 11px;
  line-height: 1;
}

.identifier-instrument-collapse:hover .identifier-collapse-glyph {
  border-color: var(--blue);
  background: color-mix(in srgb, var(--blue) 12%, transparent);
}

.identifier-instrument-stage.is-collapsed {
  padding-block: 11px;
}

.identifier-instrument-stage.is-collapsed .identifier-instrument-stage-heading {
  margin-bottom: 0;
}

.identifier-note-choice:not(:hover) .identifier-root-lock:not(:focus-visible),
.identifier-root-lock.is-locked {
  opacity: 0;
  pointer-events: none;
  transform: translateY(4px);
}

.identifier-note-choice:hover .identifier-root-lock,
.identifier-root-lock:focus-visible,
.identifier-note-choice:hover .identifier-root-lock.is-locked {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.chord-analysis-dialog {
  width: min(1320px, calc(100vw - 24px));
  max-height: calc(100vh - 24px);
}

.chord-analysis-dialog-header {
  padding: 17px 20px;
}

.chord-analysis-dialog-eyebrow {
  font-size: 10px;
}

.chord-analysis-dialog-title {
  font-size: 21px;
}

.chord-analysis-dialog-body {
  gap: 18px;
  padding: 18px;
}

.chord-evolution-heading {
  margin-bottom: 12px;
  font-size: 15px;
}

.chord-evolution-layer {
  min-height: 76px;
  padding: 13px;
}

.chord-evolution-layer-index {
  font-size: 9px;
}

.chord-evolution-layer-name {
  font-size: 12px;
}

.chord-evolution-tone {
  min-width: 54px;
  min-height: 44px;
  padding: 7px 9px;
}

.chord-evolution-tone-interval {
  font-size: 9px;
}

.chord-evolution-tone-note {
  font-size: 13px;
}

.chord-evolution-empty {
  font-size: 10px;
}

.chord-match-profile {
  padding: 16px;
}

.chord-match-profile-eyebrow,
.match-profile-detail-section h4 {
  font-size: 10px;
}

.chord-match-profile-title {
  font-size: 18px;
}

.chord-match-profile-list dt,
.chord-match-profile-list dd {
  padding-block: 9px;
  font-size: 10px;
}

.match-profile-interval-row {
  padding: 9px;
}

.match-profile-interval-token {
  min-height: 31px;
  font-size: 11px;
}

.match-profile-interval-description strong {
  font-size: 11px;
}

.match-profile-interval-description small,
.match-profile-interval-status {
  font-size: 9px;
}

.match-profile-score-list dt,
.match-profile-score-list dd {
  padding-block: 8px;
  font-size: 10px;
}

@media (max-width: 1120px) {
  .identifier-tool-toolbar-inner {
    grid-template-columns: minmax(220px, 1fr) auto minmax(360px, 1fr);
    gap: 8px;
  }

  .identifier-playback-controls .playback-field {
    min-width: 88px;
  }
}

@media (max-width: 820px) {
  .identifier-tool-toolbar-inner {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .identifier-search-control {
    grid-column: 1 / -1;
    width: 100%;
  }

  .identifier-toolbar-center {
    grid-column: 1;
    grid-row: 2;
    justify-self: start;
  }

  .identifier-command-actions {
    grid-column: 2;
    grid-row: 2;
  }
}

/* Scale Identifier -------------------------------------------------------
   The instrument/input column is the requested sticky tool surface. Results
   scroll in the document without taking its input mechanisms out of reach. */

.scale-identifier-page {
  --scale-sticky-top: calc(
    var(--identifier-nav-height) + var(--identifier-toolbar-height) + 12px
  );
}

.scale-identifier-page .identifier-app-shell.is-sidebar-open {
  grid-template-columns: clamp(410px, 32vw, 520px) minmax(0, 1fr);
}

.scale-identifier-page .identifier-sidebar-inner {
  display: flex;
  width: clamp(410px, 32vw, 520px);
  flex-direction: column;
  overflow-x: hidden;
}

.scale-identifier-page .scale-notation-sidebar .identifier-sidebar-panel:first-of-type {
  min-height: 225px;
  flex: 0 0 225px;
}

.scale-identifier-page .scale-notation-sidebar .identifier-sidebar-panel:last-of-type {
  display: grid;
  min-height: 260px;
  flex: 1 1 auto;
  grid-template-rows: auto minmax(0, 1fr);
}

.scale-identifier-page .scale-identifier-workspace {
  display: grid;
  width: min(1560px, calc(100% - 28px));
  grid-template-columns: minmax(660px, 1.42fr) minmax(390px, .88fr);
  align-items: start;
  gap: 16px;
}

.scale-identifier-page .identifier-app-shell.is-sidebar-open
  .scale-identifier-workspace {
  grid-template-columns: minmax(0, 1.42fr) minmax(340px, .88fr);
}

.scale-identifier-sticky-tools {
  position: sticky;
  z-index: 18;
  top: var(--scale-sticky-top);
  display: grid;
  max-height: calc(100dvh - var(--scale-sticky-top) - 12px);
  gap: 12px;
  overflow-x: hidden;
  overflow-y: auto;
  padding: 1px 3px 3px 1px;
  scrollbar-gutter: stable;
  scrollbar-width: thin;
}

.scale-identifier-page .identifier-input-section,
.scale-identifier-page .identifier-instruments-section,
.scale-identifier-page .identifier-results-section {
  padding: 16px;
}

.scale-identifier-page .identifier-input-section {
  border-color: color-mix(in srgb, #8b5cf6 38%, var(--line-soft));
  box-shadow: 0 12px 30px rgb(0 0 0 / 9%);
}

.scale-identifier-page .identifier-note-grid {
  grid-template-columns: repeat(12, minmax(36px, 1fr));
  gap: clamp(4px, .46vw, 7px);
}

.scale-identifier-page .identifier-note-button {
  aspect-ratio: 1;
  border-radius: 50%;
  background: color-mix(in srgb, var(--surface-raised) 90%, #6f45d8);
}

.scale-identifier-page .identifier-note-button.is-active {
  background: linear-gradient(145deg, #4a90e2, #7657dc);
}

.scale-identifier-page .identifier-note-button.is-implicit-root {
  border-color: #f5a623;
  box-shadow:
    0 0 0 3px color-mix(in srgb, #f5a623 24%, transparent),
    0 8px 20px color-mix(in srgb, #7657dc 28%, transparent);
}

.scale-identifier-page .identifier-root-lock {
  right: 4px;
  bottom: 1px;
  left: 4px;
  min-height: 16px;
  border-radius: 999px;
  font-size: clamp(5px, .42vw, 6.5px);
}

.scale-identifier-page .identifier-instruments-section {
  background: color-mix(in srgb, var(--surface) 95%, #4a90e2);
}

.scale-identifier-page .identifier-instrument-stage {
  padding: 11px;
}

.scale-identifier-page .identifier-instrument-stage + .identifier-instrument-stage {
  margin-top: 8px;
}

.scale-identifier-page .identifier-instrument-stage-heading {
  margin-bottom: 6px;
}

.scale-identifier-page .identifier-guitar-frame {
  height: var(--identifier-scaled-height, auto) !important;
  max-height: none;
}

.scale-identifier-page .identifier-piano-frame {
  max-height: none;
}

.scale-identifier-page #identifier-fretboard-mount,
.scale-identifier-page .fretboard-viewport {
  overflow: hidden;
}

.scale-identifier-page .identifier-guitar-frame > .fretboard-grid {
  transform: scale(var(--identifier-instrument-scale, 1)) !important;
  transform-origin: top left;
}

.scale-identifier-results-section {
  min-height: calc(100dvh - var(--scale-sticky-top));
}

.scale-root-filter-shell {
  position: sticky;
  z-index: 16;
  top: var(--scale-sticky-top);
  display: grid;
  gap: 7px;
  margin: -3px -4px 15px;
  padding: 10px 4px 12px;
  border-bottom: 1px solid var(--line-soft);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  backdrop-filter: blur(14px);
}

.scale-root-filter-shell > span {
  color: var(--muted);
  font-size: 8px;
  font-weight: 780;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.scale-root-filter {
  display: grid;
  grid-template-columns: repeat(13, minmax(27px, 1fr));
  gap: 4px;
}

.scale-root-filter-button {
  min-width: 0;
  min-height: 30px;
  padding: 0 3px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface-raised);
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 9px;
  font-weight: 780;
}

.scale-root-filter-button:hover {
  border-color: color-mix(in srgb, var(--blue) 62%, var(--line));
  color: var(--text);
}

.scale-root-filter-button.is-active {
  border-color: #9d78ff;
  background: linear-gradient(145deg, #6246be, #4a78c9);
  color: #fff;
  box-shadow: 0 5px 14px rgb(88 70 190 / 24%);
}

.scale-root-filter-button:focus-visible,
.scale-result-category summary:focus-visible,
.scale-info-tabs button:focus-visible,
.scale-info-close:focus-visible,
.scale-relative-mode-button:focus-visible,
.scale-diatonic-chord:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.scale-identifier-page #identifier-results-grid {
  display: grid;
  gap: 13px;
}

.scale-results-placeholder {
  display: grid;
  min-height: 220px;
  place-items: center;
  border: 1px dashed color-mix(in srgb, #9d78ff 52%, var(--line));
  border-radius: 14px;
  background:
    radial-gradient(circle at 50% 30%, rgb(157 120 255 / 10%), transparent 50%),
    var(--surface-raised);
  color: var(--text);
  font-size: clamp(12px, 1vw, 15px);
  font-weight: 720;
}

.scale-result-category {
  min-width: 0;
  overflow: visible;
  padding: 10px;
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--scale-category-accent, #4a90e2);
  border-radius: 10px;
  background: color-mix(
    in srgb,
    var(--scale-category-accent, #4a90e2) 5%,
    var(--surface-raised)
  );
}

.scale-best-match-group { --scale-category-accent: #9d78ff; }
.scale-relatives-group { --scale-category-accent: #3dbb84; }
.scale-core-subsets-group { --scale-category-accent: #4a90e2; }
.scale-superset-expansions-group { --scale-category-accent: #f5a623; }

.scale-result-category-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.scale-result-category-heading h2 {
  margin: 0;
  color: var(--scale-category-accent);
  font-size: 10px;
  font-weight: 820;
  letter-spacing: .07em;
  text-transform: uppercase;
}

.scale-result-category-heading p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 8px;
  line-height: 1.35;
}

.scale-result-category-heading > strong,
.scale-result-category > summary strong {
  display: grid;
  min-width: 25px;
  height: 22px;
  place-items: center;
  border-radius: 999px;
  background: color-mix(in srgb, var(--scale-category-accent) 16%, var(--surface));
  color: var(--scale-category-accent);
  font-size: 9px;
}

.scale-result-category > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--scale-category-accent);
  cursor: pointer;
  font-size: 10px;
  font-weight: 820;
  letter-spacing: .07em;
  list-style: none;
  text-transform: uppercase;
}

.scale-result-category > summary::-webkit-details-marker {
  display: none;
}

.scale-result-category > summary > span::before {
  display: inline-block;
  width: 16px;
  content: "+";
  font-size: 14px;
}

.scale-result-category[open] > summary > span::before {
  content: "−";
}

.scale-result-category[open] > summary {
  margin-bottom: 9px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line-soft);
}

.scale-identifier-page .scale-identifier-tier-grid {
  grid-template-columns: repeat(auto-fill, minmax(182px, 1fr));
  grid-auto-rows: 56px;
  gap: 6px;
  padding: 0;
}

.scale-identifier-page .scale-identifier-card {
  height: 54px;
  min-height: 54px;
  max-height: 54px;
  padding: 7px 7px 7px 10px;
  border-color: color-mix(in srgb, var(--scale-category-accent) 60%, var(--line));
  background: color-mix(in srgb, var(--scale-category-accent) 13%, var(--surface));
  transform: none;
}

.scale-identifier-page .scale-identifier-card:hover {
  transform: translateY(-1px);
}

.scale-identifier-page .scale-identifier-card.scale-best-match {
  border-color: #9d78ff;
  background: color-mix(in srgb, #6f45d8 45%, var(--surface));
  box-shadow: inset 3px 0 0 #b8a1ff;
}

.scale-card-copy {
  display: grid;
  min-width: 0;
  flex: 1 1 auto;
  gap: 2px;
}

.scale-identifier-page .scale-card-title {
  width: 100%;
  font-size: 14px;
}

.scale-card-meta {
  margin: 0;
  overflow: hidden;
  color: var(--muted);
  font-size: 7.5px;
  font-weight: 660;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.scale-card-actions {
  flex: 0 0 auto;
}

.scale-show-more-button {
  display: block;
  min-height: 34px;
  margin: 11px auto 1px;
  padding: 0 15px;
  border: 1px solid color-mix(in srgb, var(--scale-category-accent) 58%, var(--line));
  border-radius: 999px;
  background: color-mix(in srgb, var(--scale-category-accent) 10%, var(--surface));
  color: var(--scale-category-accent);
  cursor: pointer;
  font: inherit;
  font-size: 9px;
  font-weight: 780;
}

.scale-show-more-button:hover {
  background: color-mix(in srgb, var(--scale-category-accent) 18%, var(--surface));
}

.scale-show-more-button[hidden] {
  display: none;
}

.scale-identifier-page .identifier-deviation-badge[data-deviation="mixed"] {
  color: #3dbb84;
}

.scale-identifier-page .scale-notation-sidebar .identifier-sidebar-staff {
  min-height: 180px;
  height: 190px;
  overflow: hidden;
}

.scale-identifier-page .scale-notation-sidebar .identifier-sidebar-staff svg {
  width: 100% !important;
  max-width: 100%;
  height: 190px !important;
  aspect-ratio: auto;
}

.scale-identifier-page .scale-notation-sidebar .identifier-sidebar-tab {
  display: grid;
  width: 100%;
  min-height: 0;
  place-items: center start;
  overflow: hidden;
  font-size: 12px;
  line-height: 1.8;
  letter-spacing: 0;
  white-space: pre;
}

/* Rich Scale Info modal */

.scale-info-overlay {
  position: fixed;
  z-index: 240;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 16px;
  background: var(--identifier-overlay);
  backdrop-filter: blur(8px);
}

.scale-info-dialog {
  display: grid;
  width: min(1120px, calc(100vw - 32px));
  max-height: calc(100dvh - 32px);
  grid-template-rows: auto auto minmax(0, 1fr);
  overflow: hidden;
  border: 1px solid color-mix(in srgb, #9d78ff 44%, var(--line));
  border-radius: 16px;
  background: var(--surface);
  box-shadow: var(--identifier-panel-shadow);
}

.scale-info-dialog-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 20px 15px;
  border-bottom: 1px solid var(--line-soft);
}

.scale-info-dialog-header h2 {
  margin: 4px 0 0;
  color: var(--strong-text);
  font-size: clamp(19px, 2.3vw, 28px);
  letter-spacing: -.025em;
}

.scale-info-close {
  display: grid;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  place-items: center;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--surface-raised);
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 18px;
}

.scale-info-tabs {
  display: flex;
  gap: 3px;
  padding: 7px 9px 0;
  overflow-x: auto;
  border-bottom: 1px solid var(--line-soft);
  background: var(--surface-raised);
}

.scale-info-tabs button {
  min-height: 44px;
  padding: 0 16px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 780;
  white-space: nowrap;
}

.scale-info-tabs button.is-active {
  border-bottom-color: #9d78ff;
  color: var(--strong-text);
}

.scale-info-dialog-body {
  min-height: 0;
  overflow: auto;
  padding: clamp(16px, 2.2vw, 24px);
}

.scale-info-panel[hidden] {
  display: none;
}

.scale-info-definition-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
}

.scale-info-definition-list > div {
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  background: var(--surface-raised);
}

.scale-info-definition-list > div:first-child,
.scale-info-definition-list > div:last-child {
  grid-column: 1 / -1;
}

.scale-info-definition-list dt {
  margin-bottom: 7px;
  color: #9d78ff;
  font-size: 10px;
  font-weight: 820;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.scale-info-definition-list dd {
  margin: 0;
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
}

.scale-info-panel-intro {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.scale-relative-mode-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 8px;
}

.scale-relative-mode-button {
  display: grid;
  min-width: 0;
  min-height: 68px;
  grid-template-columns: 28px minmax(0, 1fr);
  align-items: center;
  gap: 2px 8px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface-raised);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  text-align: left;
}

.scale-relative-mode-button:hover {
  border-color: #3dbb84;
  background: color-mix(in srgb, #3dbb84 10%, var(--surface-raised));
}

.scale-relative-mode-button > span {
  grid-row: 1 / 3;
  color: #3dbb84;
  font-size: 11px;
  font-weight: 820;
}

.scale-relative-mode-button strong,
.scale-relative-mode-button small {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.scale-relative-mode-button strong {
  font-size: 14px;
}

.scale-relative-mode-button small {
  color: var(--muted);
  font-size: 11px;
}

.scale-diatonic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 8px;
}

.scale-diatonic-degree {
  display: grid;
  min-width: 0;
  gap: 6px;
  padding: 8px;
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  background: var(--surface-raised);
}

.scale-diatonic-degree-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding: 0 2px 4px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 760;
  text-transform: uppercase;
}

.scale-diatonic-degree-heading strong {
  color: #f5a623;
  font-size: 14px;
}

.scale-diatonic-chord {
  display: grid;
  min-width: 0;
  min-height: 54px;
  align-content: center;
  gap: 3px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  text-align: left;
}

.scale-diatonic-chord:hover {
  border-color: #f5a623;
  background: color-mix(in srgb, #f5a623 10%, var(--surface));
}

.scale-diatonic-chord span {
  color: var(--muted);
  font-size: 10px;
  font-weight: 740;
  text-transform: uppercase;
}

.scale-diatonic-chord strong {
  overflow: hidden;
  font-size: 14px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

@media (max-width: 1180px) {
  .scale-identifier-page .scale-identifier-workspace {
    grid-template-columns: minmax(0, 1fr);
  }

  .scale-identifier-page .identifier-app-shell.is-sidebar-open
    .scale-identifier-workspace {
    grid-template-columns: minmax(0, 1fr);
  }

  .scale-identifier-sticky-tools {
    position: static;
    max-height: none;
    overflow: visible;
  }

  .scale-root-filter-shell {
    top: calc(var(--identifier-nav-height) + var(--identifier-toolbar-height));
  }

  .scale-identifier-results-section {
    min-height: 0;
  }
}

@media (max-width: 760px) {
  .scale-identifier-page .identifier-app-shell.is-sidebar-open {
    grid-template-columns: min(90vw, 520px) minmax(0, 1fr);
  }

  .scale-identifier-page .identifier-sidebar-inner {
    width: min(90vw, 520px);
  }

  .scale-root-filter {
    grid-template-columns: repeat(7, minmax(30px, 1fr));
  }

  .scale-info-definition-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .scale-info-definition-list > div:first-child,
  .scale-info-definition-list > div:last-child {
    grid-column: auto;
  }
}

@media (max-width: 560px) {
  .scale-identifier-page .identifier-note-grid {
    grid-template-columns: repeat(6, minmax(38px, 1fr));
  }

  .scale-identifier-page .identifier-note-controls {
    align-items: end;
  }

  .scale-info-overlay {
    padding: 7px;
  }

  .scale-info-dialog {
    width: calc(100vw - 14px);
    max-height: calc(100dvh - 14px);
    border-radius: 12px;
  }

  .scale-info-tabs button {
    padding-inline: 11px;
  }
}

/* Chord Identifier premium two-column backport ------------------------- */

.chord-identifier-page {
  --chord-sticky-top: calc(
    var(--identifier-nav-height) + var(--identifier-toolbar-height) + 12px
  );
}

.chord-identifier-page .chord-identifier-workspace {
  display: grid;
  width: min(1560px, calc(100% - 28px));
  grid-template-columns: minmax(660px, 1.42fr) minmax(390px, .88fr);
  align-items: start;
  gap: 16px;
}

.chord-identifier-page .identifier-app-shell.is-sidebar-open
  .chord-identifier-workspace {
  grid-template-columns: minmax(0, 1.42fr) minmax(340px, .88fr);
}

.chord-identifier-sticky-tools,
.chord-identifier-results-section {
  position: sticky;
  top: var(--chord-sticky-top);
  max-height: calc(100dvh - var(--chord-sticky-top) - 12px);
  overflow-x: hidden;
  overflow-y: auto;
  scrollbar-gutter: stable;
  scrollbar-width: thin;
}

.chord-identifier-sticky-tools {
  z-index: 18;
  display: grid;
  gap: 12px;
  padding: 1px 3px 3px 1px;
}

.chord-identifier-results-section {
  z-index: 15;
  min-height: calc(100dvh - var(--chord-sticky-top) - 12px);
  padding: 16px;
}

.chord-identifier-page .identifier-input-section,
.chord-identifier-page .identifier-instruments-section {
  padding: 16px;
}

.chord-identifier-page .identifier-input-section {
  border-color: color-mix(in srgb, #8b5cf6 38%, var(--line-soft));
  box-shadow: 0 12px 30px rgb(0 0 0 / 9%);
}

.chord-identifier-page .identifier-note-grid {
  grid-template-columns: repeat(12, minmax(36px, 1fr));
  gap: clamp(4px, .46vw, 7px);
}

.chord-identifier-page .identifier-note-button {
  aspect-ratio: 1;
  border-radius: 50%;
  background: color-mix(in srgb, var(--surface-raised) 90%, #6f45d8);
}

.chord-identifier-page .identifier-note-button.is-active {
  background: linear-gradient(145deg, #4a90e2, #7657dc);
}

.chord-identifier-page .identifier-root-lock {
  right: 4px;
  bottom: 1px;
  left: 4px;
  min-height: 16px;
  border-radius: 999px;
  font-size: clamp(5px, .42vw, 6.5px);
}

.chord-identifier-page .identifier-instruments-section {
  background: color-mix(in srgb, var(--surface) 95%, #4a90e2);
}

.chord-identifier-page .identifier-instrument-stage {
  padding: 11px;
}

.chord-identifier-page .identifier-instrument-stage +
  .identifier-instrument-stage {
  margin-top: 8px;
}

.chord-identifier-page .identifier-instrument-stage-heading {
  margin-bottom: 6px;
}

.chord-identifier-page .identifier-guitar-frame {
  height: var(--identifier-scaled-height, auto) !important;
  max-height: none;
}

.chord-identifier-page .identifier-piano-frame {
  max-height: none;
}

.chord-identifier-page #identifier-fretboard-mount,
.chord-identifier-page .fretboard-viewport {
  overflow: hidden;
}

.chord-identifier-page .identifier-guitar-frame > .fretboard-grid {
  transform: scale(var(--identifier-instrument-scale, 1)) !important;
  transform-origin: top left;
}

.chord-root-filter-shell {
  top: -1px;
}

.chord-results-placeholder {
  min-height: 240px;
}

.chord-show-more-button {
  --scale-category-accent: var(--blue);
}

/* Tabbed chord information modal */

.chord-info-dialog {
  width: min(1180px, calc(100vw - 32px));
}

.chord-compatible-scale-grid,
.chord-voicing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 10px;
}

.chord-compatible-scale-card,
.chord-voicing-card {
  display: grid;
  min-width: 0;
  min-height: 70px;
  align-content: center;
  gap: 5px;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface-raised);
  color: var(--text);
  font: inherit;
  text-align: left;
  text-decoration: none;
}

.chord-compatible-scale-card:hover,
.chord-voicing-card:hover {
  border-color: #3dbb84;
  background: color-mix(in srgb, #3dbb84 10%, var(--surface-raised));
}

.chord-compatible-scale-card strong,
.chord-voicing-card strong {
  overflow: hidden;
  color: var(--strong-text);
  font-size: 14px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chord-compatible-scale-card small,
.chord-voicing-card span {
  color: var(--muted);
  font-size: 10px;
  font-weight: 720;
  text-transform: uppercase;
}

.chord-voicing-card {
  cursor: pointer;
}

.chord-voicing-card code {
  overflow: hidden;
  color: #f5a623;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  font-weight: 780;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chord-compatible-scale-card:focus-visible,
.chord-voicing-card:focus-visible,
.chord-root-filter-button:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

@media (max-width: 1180px) {
  .chord-identifier-page .chord-identifier-workspace,
  .chord-identifier-page .identifier-app-shell.is-sidebar-open
    .chord-identifier-workspace {
    grid-template-columns: minmax(0, 1fr);
  }

  .chord-identifier-sticky-tools,
  .chord-identifier-results-section {
    position: static;
    max-height: none;
    overflow: visible;
  }

  .chord-identifier-results-section {
    min-height: 0;
  }

  .chord-root-filter-shell {
    top: calc(var(--identifier-nav-height) + var(--identifier-toolbar-height));
  }
}

@media (max-width: 760px) {
  .chord-identifier-page .identifier-note-grid {
    grid-template-columns: repeat(6, minmax(38px, 1fr));
  }

  .chord-compatible-scale-grid,
  .chord-voicing-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Chord modal: detailed harmonic breakdown and playable cross-library cards. */
.chord-breakdown-panel {
  display: grid;
  gap: 14px;
}

.chord-breakdown-heading {
  display: grid;
  gap: 3px;
}

.chord-breakdown-heading > span,
.chord-breakdown-insight > span {
  color: var(--accent);
  font-size: 10px;
  font-weight: 820;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.chord-breakdown-heading h3,
.chord-breakdown-tone-section h4 {
  margin: 0;
  color: var(--strong-text);
}

.chord-breakdown-heading h3 {
  font-size: clamp(19px, 2vw, 25px);
}

.chord-breakdown-heading p,
.chord-breakdown-insight p {
  margin: 0;
  color: var(--muted-text);
  line-height: 1.55;
}

.chord-breakdown-heading p {
  font-size: 13px;
}

.chord-info-definition-list {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.chord-info-definition-list > div,
.chord-info-definition-list > div:first-child,
.chord-info-definition-list > div:last-child {
  grid-column: auto;
}

.chord-info-definition-list dd {
  font-size: 13px;
}

.chord-breakdown-tone-section {
  display: grid;
  gap: 8px;
}

.chord-breakdown-tone-section h4 {
  font-size: 13px;
}

.chord-breakdown-tone-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(142px, 1fr));
  gap: 8px;
}

.chord-breakdown-tone {
  position: relative;
  display: grid;
  min-width: 0;
  min-height: 94px;
  grid-template-columns: auto minmax(0, 1fr);
  align-content: center;
  align-items: center;
  gap: 3px 9px;
  padding: 11px 12px;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  background: var(--surface-raised);
}

.chord-breakdown-tone.is-omitted {
  border-color: color-mix(in srgb, var(--orange) 48%, var(--line-soft));
  background: color-mix(in srgb, var(--orange) 7%, var(--surface-raised));
}

.chord-breakdown-tone.is-added {
  border-color: color-mix(in srgb, var(--blue) 48%, var(--line-soft));
  background: color-mix(in srgb, var(--blue) 7%, var(--surface-raised));
}

.chord-breakdown-interval {
  display: grid;
  width: 31px;
  height: 31px;
  grid-row: 1 / 3;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--surface);
  color: var(--accent);
  font-size: 10px;
  font-weight: 840;
}

.chord-breakdown-tone strong {
  min-width: 0;
  color: var(--strong-text);
  font-size: 16px;
}

.chord-breakdown-tone small {
  min-width: 0;
  overflow: hidden;
  color: var(--muted-text);
  font-size: 10px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chord-breakdown-tone em {
  position: absolute;
  top: 7px;
  right: 8px;
  color: var(--muted-text);
  font-size: 8px;
  font-style: normal;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.chord-breakdown-insight-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.chord-breakdown-insight {
  display: grid;
  min-width: 0;
  gap: 5px;
  padding: 13px 14px;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  background: var(--surface-raised);
}

.chord-breakdown-insight strong {
  color: var(--strong-text);
  font-size: 14px;
}

.chord-breakdown-insight p {
  font-size: 11px;
}

.chord-compatible-scale-grid,
.chord-companion-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 10px;
}

.chord-compatible-scale-card,
.chord-companion-card {
  display: grid;
  min-width: 0;
  min-height: 92px;
  grid-template-rows: minmax(0, 1fr) auto;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface-raised);
}

.chord-compatible-scale-card:hover,
.chord-companion-card:hover {
  border-color: color-mix(in srgb, var(--accent) 70%, var(--line));
  background: color-mix(in srgb, var(--accent) 7%, var(--surface-raised));
}

.chord-compatible-scale-preview,
.chord-companion-preview {
  display: grid;
  min-width: 0;
  align-content: center;
  gap: 4px;
  padding: 11px 12px 8px;
  border: 0;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  font: inherit;
  text-align: left;
}

.chord-compatible-scale-preview strong,
.chord-companion-preview strong {
  min-width: 0;
  overflow: hidden;
  color: var(--strong-text);
  font-size: 14px;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chord-compatible-scale-preview small,
.chord-companion-preview small {
  min-width: 0;
  overflow: hidden;
  color: var(--muted-text);
  font-size: 9px;
  font-weight: 740;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.chord-compatible-scale-preview[aria-busy="true"],
.chord-companion-preview[aria-busy="true"] {
  opacity: .62;
}

.chord-compatible-scale-link {
  display: block;
  padding: 6px 12px 7px;
  border-top: 1px solid var(--line-soft);
  color: var(--accent);
  font-size: 9px;
  font-weight: 820;
  letter-spacing: .04em;
  text-decoration: none;
}

.chord-compatible-scale-link:hover {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  color: var(--strong-text);
}

.chord-compatible-scale-preview:focus-visible,
.chord-companion-preview:focus-visible,
.chord-compatible-scale-link:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: -2px;
}

@media (max-width: 900px) {
  .chord-info-definition-list,
  .chord-breakdown-insight-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .chord-compatible-scale-grid,
  .chord-companion-grid,
  .chord-info-definition-list,
  .chord-breakdown-insight-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}