:root {
  --bg: #111417;
  --bg-elevated: #1a2024;
  --panel: #1f262b;
  --panel-strong: #242d33;
  --line: #34414a;
  --line-soft: rgba(255, 255, 255, 0.08);
  --text: #f4efe6;
  --muted: #b8b0a5;
  --accent: #d59b44;
  --accent-strong: #f0b85e;
  --support: #7ab6a2;
  --warning: #d27a62;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next", "Trebuchet MS", sans-serif;
  color: var(--text);
  background:
    linear-gradient(180deg, rgba(213, 155, 68, 0.09), transparent 16rem),
    linear-gradient(135deg, #121619 0%, #171d22 42%, #101315 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 85%);
}

.page-shell {
  width: min(1320px, calc(100% - 1.5rem));
  margin: 0 auto;
  padding: 1rem 0 2rem;
}

.hero {
  padding: 0.75rem 0 1.1rem;
}

.hero-kicker,
.card-kicker,
.summary-label {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--accent);
}

.hero h1 {
  margin: 0.45rem 0 0.7rem;
  font-family: "Palatino Linotype", "Book Antiqua", Georgia, serif;
  font-size: clamp(2.4rem, 8vw, 4.4rem);
  line-height: 0.95;
  max-width: 10ch;
}

.hero-copy {
  margin: 0;
  max-width: 42rem;
  color: var(--muted);
  line-height: 1.55;
}

.workspace {
  display: grid;
  gap: 0.9rem;
}

.maker-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin: 1rem auto 0;
  padding: 0.15rem 0 0;
  color: color-mix(in srgb, var(--muted) 76%, var(--text) 24%);
  text-align: center;
}

.maker-mark-dot {
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 999px;
  background:
    radial-gradient(circle at 35% 35%, rgba(255, 255, 255, 0.75), transparent 42%),
    var(--support);
  box-shadow: 0 0 0 1px rgba(122, 182, 162, 0.22);
  flex: 0 0 auto;
}

.maker-mark-text {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.4;
  letter-spacing: 0.02em;
}

.primary-column {
  display: grid;
  gap: 0.85rem;
}

.input-panel,
.detail-card,
.result-card {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent),
    var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.input-panel {
  padding: 0.95rem;
}

.panel-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.45rem;
  margin-bottom: 0.75rem;
}

.panel-nav-button {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  min-height: 2rem;
  padding: 0.34rem 0.72rem;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition:
    transform 140ms ease,
    border-color 140ms ease,
    background-color 140ms ease,
    color 140ms ease;
  width: 100%;
  text-align: center;
}

.panel-nav-button:hover,
.panel-nav-button:focus-visible {
  transform: translateY(-1px);
  border-color: var(--accent);
  background: rgba(213, 155, 68, 0.1);
  color: var(--text);
}

.panel-nav-button.is-active {
  border-color: var(--accent-strong);
  background: rgba(240, 184, 94, 0.16);
  color: #fff4df;
}

.panel-view {
  display: grid;
}

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

.panel-head h2 {
  margin: 0;
  font-size: 1.4rem;
  line-height: 1.15;
}

.panel-head p {
  margin: 0.55rem 0 0;
  color: var(--muted);
  line-height: 1.55;
}

.panel-head span {
  color: var(--text);
}

.input-label {
  display: inline-block;
  margin-top: 1rem;
  margin-bottom: 0.5rem;
  font-size: 0.92rem;
  font-weight: 700;
}

.builder-label-button,
.builder-suggestion-button {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  padding: 0.72rem 0.9rem;
  font: inherit;
  cursor: pointer;
  transition:
    transform 140ms ease,
    border-color 140ms ease,
    background-color 140ms ease;
}

.builder-label-button:hover,
.builder-label-button:focus-visible,
.builder-suggestion-button:hover,
.builder-suggestion-button:focus-visible {
  transform: translateY(-1px);
  border-color: var(--accent);
  background: rgba(213, 155, 68, 0.1);
}

.builder-label-button.is-active {
  border-color: var(--accent-strong);
  background: rgba(240, 184, 94, 0.16);
  color: #fff4df;
}

textarea {
  width: 100%;
  min-height: 7rem;
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  font: inherit;
  line-height: 1.6;
  resize: vertical;
}

textarea:focus,
.preset-button:focus,
.key-selector-button:focus,
.detail-button:focus,
.detail-voicing-button:focus,
.item-action-button:focus,
.variation-action:focus,
.chord-chip:focus,
.builder-label-button:focus,
.builder-suggestion-button:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.preset-area {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.9rem;
}

.preset-button {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  padding: 0.72rem 0.9rem;
  font: inherit;
  cursor: pointer;
  transition:
    transform 140ms ease,
    border-color 140ms ease,
    background-color 140ms ease;
}

.preset-button:hover,
.preset-button:focus-visible {
  transform: translateY(-1px);
  border-color: var(--accent);
  background: rgba(213, 155, 68, 0.1);
}

.action-row {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.6rem;
  margin-top: 0.75rem;
}

.builder-card {
  margin-top: 0.75rem;
  padding: 0.75rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.12);
}

.builder-card:first-of-type {
  margin-top: 0.7rem;
}

.builder-card-compact {
  padding: 0.7rem;
}

.mobile-key-selector-bar {
  display: none;
}

.mobile-key-selector-bar[hidden] {
  display: none !important;
}

.explorer-card {
  scroll-margin-top: 0.75rem;
}

.builder-head {
  display: grid;
  gap: 0.25rem;
}

.builder-help {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.42;
  overflow-wrap: anywhere;
}

.builder-labels {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.65rem;
}

.builder-labels .builder-label-button {
  flex: 1 1 calc(50% - 0.55rem);
}

.builder-subsection {
  display: grid;
  gap: 0.3rem;
  margin-top: 0.75rem;
  padding-top: 0.7rem;
  border-top: 1px solid var(--line-soft);
}

.builder-subsection-first {
  margin-top: 0.85rem;
  padding-top: 0;
  border-top: 0;
}

.library-chip-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.65rem;
}

.key-selector-grid,
.explorer-chip-row,
.key-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.65rem;
}

.key-selector-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.key-selector-button {
  border: 1px solid rgba(213, 155, 68, 0.22);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(213, 155, 68, 0.08), rgba(255, 255, 255, 0.02)),
    rgba(255, 255, 255, 0.03);
  color: var(--text);
  min-height: 2.8rem;
  padding: 0.55rem 0.72rem;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  line-height: 1.2;
  text-align: left;
  cursor: pointer;
  transition:
    transform 140ms ease,
    border-color 140ms ease,
    background-color 140ms ease,
    box-shadow 140ms ease;
}

.key-selector-button:hover,
.key-selector-button:focus-visible {
  transform: translateY(-1px);
  border-color: var(--accent);
  background:
    linear-gradient(180deg, rgba(213, 155, 68, 0.14), rgba(255, 255, 255, 0.03)),
    rgba(255, 255, 255, 0.04);
}

.key-selector-button.is-active {
  border-color: var(--accent-strong);
  background:
    linear-gradient(180deg, rgba(240, 184, 94, 0.18), rgba(255, 255, 255, 0.04)),
    rgba(255, 255, 255, 0.06);
  color: #fff4df;
  box-shadow: inset 0 0 0 1px rgba(240, 184, 94, 0.18);
}

.key-summary-pill {
  display: inline-flex;
  align-items: center;
  min-height: 2.1rem;
  padding: 0.38rem 0.72rem;
  border: 1px solid rgba(122, 182, 162, 0.35);
  border-radius: 999px;
  background: rgba(122, 182, 162, 0.08);
  color: #d9f0e7;
  font-size: 0.9rem;
  font-weight: 700;
}

.mobile-key-selector-copy {
  display: grid;
  gap: 0.18rem;
}

.mobile-key-selector-summary {
  margin: 0;
  color: #d9f0e7;
  font-weight: 700;
  line-height: 1.35;
}

.mobile-key-selector-toggle {
  min-width: 0;
}

.mobile-key-selector-field {
  display: grid;
  gap: 0.22rem;
  min-width: min(13.5rem, 52vw);
}

.mobile-key-selector-field .detail-label {
  margin: 0;
}

.mobile-key-selector-select {
  width: 100%;
  min-height: 2.3rem;
  border: 1px solid rgba(122, 182, 162, 0.35);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(122, 182, 162, 0.08), rgba(255, 255, 255, 0.03)),
    rgba(19, 25, 29, 0.94);
  color: var(--text);
  padding: 0.42rem 2rem 0.42rem 0.72rem;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  line-height: 1.2;
}

.mobile-key-selector-select:focus-visible {
  outline: none;
  border-color: var(--accent-strong);
  box-shadow: 0 0 0 1px rgba(240, 184, 94, 0.26);
}

.library-chip-button {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  min-height: 2rem;
  padding: 0.34rem 0.72rem;
  font: inherit;
  font-size: 0.86rem;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  transition:
    transform 140ms ease,
    border-color 140ms ease,
    background-color 140ms ease;
}

.library-chip-button:hover,
.library-chip-button:focus-visible {
  transform: translateY(-1px);
  border-color: var(--accent);
  background: rgba(213, 155, 68, 0.1);
}

.library-chip-button.is-active {
  border-color: var(--accent-strong);
  background: rgba(240, 184, 94, 0.16);
  color: #fff4df;
}

.library-hint {
  margin-top: 0.8rem;
}

.micro-copy,
.feedback,
.summary-note {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.feedback {
  min-height: 1.5rem;
  margin-top: 0.75rem;
}

.feedback.is-error {
  color: var(--warning);
}

.summary-value {
  margin: 0.4rem 0 0.55rem;
  font-family: "Palatino Linotype", "Book Antiqua", Georgia, serif;
  font-size: 1.45rem;
  line-height: 1.2;
}

.detail-card {
  padding: 0.95rem;
  background:
    linear-gradient(180deg, rgba(213, 155, 68, 0.08), transparent),
    var(--panel-strong);
}

.detail-card.is-scale-detail {
  background:
    linear-gradient(180deg, rgba(122, 182, 162, 0.1), transparent),
    var(--panel-strong);
}

.detail-card.is-key-detail {
  background:
    linear-gradient(180deg, rgba(213, 155, 68, 0.14), transparent),
    var(--panel-strong);
}

.detail-card.is-scale-detail .detail-intro {
  gap: 0.5rem;
}

.detail-card.is-scale-detail .diagram-shell {
  place-items: start stretch;
}

.detail-card.is-scale-detail .detail-grid {
  grid-template-columns: 1fr;
}

.detail-card.is-scale-detail .detail-grid .detail-block {
  min-width: 0;
}

.detail-card.is-scale-detail .detail-grid-extra {
  grid-template-columns: 1fr;
}

.detail-card.is-scale-detail .detail-grid-extra .detail-block {
  background: rgba(0, 0, 0, 0.16);
}

.detail-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.65rem;
}

.detail-badge {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-size: 0.88rem;
  font-weight: 700;
}

.detail-badge.is-safe {
  border-color: rgba(122, 182, 162, 0.5);
  color: #d9f0e7;
}

.detail-badge.is-color {
  border-color: rgba(213, 155, 68, 0.5);
  color: #fff0d0;
}

.detail-badge.is-warning {
  border-color: rgba(210, 122, 98, 0.5);
  color: #ffd7cf;
}

.detail-grid {
  display: grid;
  gap: 0.65rem;
  margin-top: 0.55rem;
}

.detail-hero {
  display: grid;
  gap: 0.55rem;
}

.detail-hero .card-header h3 {
  font-size: 1.35rem;
}

.detail-intro {
  display: grid;
  gap: 0.4rem;
  margin-top: 0.65rem;
}

.detail-main {
  display: grid;
  gap: 0.9rem;
  margin-top: 0.75rem;
}

.detail-section {
  display: grid;
  gap: 0.1rem;
}

.detail-section-heading {
  margin: 0;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
}

.detail-card.is-key-detail .detail-intro {
  gap: 0.5rem;
}

.detail-card.is-key-detail .detail-main {
  grid-template-columns: 1fr;
}

.detail-card.is-key-detail .detail-facts {
  gap: 0.85rem;
}

.detail-card.is-key-detail .detail-grid {
  grid-template-columns: 1fr;
}

.detail-card.is-key-detail .detail-grid .detail-block {
  min-width: 0;
}

.detail-card.is-key-detail .detail-grid:first-child .detail-block-notes,
.detail-card.is-key-detail .detail-grid:first-child .detail-block-formula {
  background: rgba(0, 0, 0, 0.16);
}

.detail-card.is-key-detail .detail-grid:first-child .detail-block-formula .detail-value {
  line-height: 1.65;
  white-space: pre-line;
}

.detail-card.is-key-detail .detail-value {
  white-space: pre-line;
}

.detail-card.is-key-detail .detail-grid-extra .detail-block {
  background: rgba(0, 0, 0, 0.16);
}

.detail-card.is-key-detail .detail-list.detail-list-key {
  margin-top: 0.7rem;
}

.diagram-card {
  margin-top: 0;
  padding: 0.95rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(0, 0, 0, 0.08)),
    rgba(0, 0, 0, 0.14);
}

.diagram-shell {
  margin-top: 0.62rem;
  min-height: 11.5rem;
  display: grid;
  place-items: center;
}

.detail-card:not(.is-scale-detail) .diagram-shell {
  min-height: 15rem;
}

.detail-voicing-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.38rem;
  justify-content: center;
  margin-top: 0.82rem;
}

.detail-voicing-button {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  min-height: 2rem;
  padding: 0.3rem 0.62rem;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  transition:
    transform 140ms ease,
    border-color 140ms ease,
    background-color 140ms ease;
}

.detail-voicing-button:hover,
.detail-voicing-button:focus-visible {
  transform: translateY(-1px);
  border-color: var(--accent);
  background: rgba(213, 155, 68, 0.1);
}

.detail-voicing-button.is-active {
  border-color: var(--accent-strong);
  background: rgba(240, 184, 94, 0.16);
  color: #fff4df;
  box-shadow: inset 0 0 0 1px rgba(240, 184, 94, 0.22);
}

.diagram-fallback {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
  text-align: center;
}

.scale-shape {
  width: min(100%, 34rem);
  display: grid;
  gap: 0.48rem;
  justify-items: stretch;
}

.scale-shape-header,
.scale-shape-copy {
  display: grid;
  gap: 0.38rem;
  width: 100%;
}

.scale-shape-body {
  display: grid;
  gap: 0.42rem;
  align-items: start;
  justify-items: center;
}

.scale-shape-title,
.scale-shape-position,
.scale-shape-roots,
.scale-shape-tip,
.scale-shape-warning {
  margin: 0;
  overflow-wrap: anywhere;
}

.scale-shape-roots,
.scale-shape-tip,
.scale-shape-warning {
  overflow-wrap: normal;
}

.scale-shape-title {
  color: var(--text);
  font-weight: 700;
}

.scale-shape-position {
  color: var(--muted);
  font-size: 0.92rem;
}

.scale-diagram {
  width: min(100%, 15.5rem);
  justify-self: center;
}

.scale-diagram-frame {
  width: fit-content;
  max-width: 100%;
  display: grid;
  place-items: center;
  margin-inline: auto;
  padding: 0;
  border-radius: calc(var(--radius) - 0.15rem);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(0, 0, 0, 0.08));
}

.scale-shape-roots {
  color: #fff0d0;
  font-weight: 700;
}

.scale-shape-tip {
  color: var(--muted);
  line-height: 1.52;
}

.scale-shape-warning {
  color: #ffd7cf;
  line-height: 1.52;
}

.chord-diagram:not(.scale-diagram) {
  width: min(100%, 15.25rem);
  height: auto;
  display: block;
}

.detail-block {
  padding: 0.7rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.14);
  min-width: 0;
}

.detail-label,
.result-caption {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
}

.detail-value,
.result-text-title {
  margin: 0.25rem 0 0;
  font-weight: 700;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.detail-card.is-key-detail .detail-value {
  line-height: 1.58;
}

.detail-actions {
  margin-top: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.detail-helper {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.4;
}

.detail-button,
.item-action-button,
.variation-action {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  padding: 0.72rem 0.9rem;
  font: inherit;
  cursor: pointer;
  transition:
    transform 140ms ease,
    border-color 140ms ease,
    background-color 140ms ease;
}

.detail-button:hover,
.detail-button:focus-visible,
.item-action-button:hover,
.item-action-button:focus-visible,
.variation-action:hover,
.variation-action:focus-visible {
  transform: translateY(-1px);
  border-color: var(--accent);
  background: rgba(213, 155, 68, 0.1);
}

.detail-button {
  min-width: 8.75rem;
}

.detail-button.is-secondary {
  min-width: 0;
}

.detail-button.is-muted {
  min-width: 0;
  border-color: rgba(210, 122, 98, 0.32);
  color: #efcdc5;
  background: rgba(210, 122, 98, 0.06);
}

.detail-button.is-danger:hover,
.detail-button.is-danger:focus-visible {
  border-color: var(--warning);
  background: rgba(210, 122, 98, 0.14);
}

.detail-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.detail-grid-practical,
.detail-grid-extra {
  grid-template-columns: 1fr;
}

.detail-variations {
  margin-top: 0.85rem;
}

.detail-list {
  list-style: none;
  margin: 0.55rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.detail-list li {
  display: grid;
  gap: 0.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--line-soft);
}

.detail-list li::marker {
  color: var(--muted);
}

.detail-list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.variation-row,
.result-row-head,
.result-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
}

.variation-reason {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.variation-action,
.item-action-button {
  width: fit-content;
}

.variation-row .variation-action {
  padding: 0.52rem 0.72rem;
  font-size: 0.86rem;
}

.detail-list-variations {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.detail-list-variations li {
  gap: 0.45rem;
  padding: 0.65rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.12);
}

.detail-list-variations li:first-child {
  border-top: 1px solid var(--line-soft);
}

.detail-list-tips {
  gap: 0.5rem;
}

.detail-list-tips li {
  gap: 0.35rem;
  padding-top: 0.55rem;
}

.detail-list.detail-list-key {
  gap: 0.55rem;
}

.detail-list.detail-list-key li {
  gap: 0.32rem;
  padding-top: 0.6rem;
}

.detail-tip-text {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.item-action-button,
.variation-action {
  font-size: 0.92rem;
}

.chord-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.42rem;
  min-height: 2.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  padding: 0.45rem 0.72rem;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition:
    transform 140ms ease,
    border-color 140ms ease,
    background-color 140ms ease;
}

.scale-chip {
  border-style: dashed;
}

.chord-chip:hover,
.chord-chip:focus-visible {
  transform: translateY(-1px);
  border-color: var(--accent);
  background: rgba(213, 155, 68, 0.12);
}

.chord-chip.is-selected {
  border-color: var(--accent-strong);
  background: rgba(240, 184, 94, 0.18);
  color: #fff6e6;
  box-shadow: inset 0 0 0 1px rgba(240, 184, 94, 0.22);
}

.chord-chip.is-selected-secondary {
  border-color: rgba(240, 184, 94, 0.45);
  background: rgba(240, 184, 94, 0.1);
}

.chord-chip.is-home {
  border-color: rgba(122, 182, 162, 0.4);
  background:
    linear-gradient(180deg, rgba(122, 182, 162, 0.12), rgba(255, 255, 255, 0.03)),
    rgba(122, 182, 162, 0.08);
  box-shadow:
    inset 0 0 0 1px rgba(122, 182, 162, 0.12),
    0 0 0 1px rgba(122, 182, 162, 0.08),
    0 8px 18px rgba(76, 138, 124, 0.14);
}

.chord-chip.is-home:hover,
.chord-chip.is-home:focus-visible {
  border-color: rgba(122, 182, 162, 0.58);
  background:
    linear-gradient(180deg, rgba(122, 182, 162, 0.18), rgba(255, 255, 255, 0.04)),
    rgba(122, 182, 162, 0.11);
}

.chord-chip.is-home.is-selected {
  border-color: var(--accent-strong);
  background:
    linear-gradient(180deg, rgba(122, 182, 162, 0.18), rgba(240, 184, 94, 0.12)),
    rgba(240, 184, 94, 0.14);
  color: #fff6e6;
  box-shadow:
    inset 0 0 0 1px rgba(240, 184, 94, 0.24),
    0 0 0 1px rgba(240, 184, 94, 0.22),
    0 8px 18px rgba(76, 138, 124, 0.14);
}

.chord-chip.is-home.is-selected:hover,
.chord-chip.is-home.is-selected:focus-visible {
  border-color: var(--accent-strong);
  background:
    linear-gradient(180deg, rgba(122, 182, 162, 0.2), rgba(240, 184, 94, 0.16)),
    rgba(240, 184, 94, 0.17);
}

.chord-chip-text {
  line-height: 1;
}

.chord-chip-tag {
  padding: 0.18rem 0.36rem;
  border-radius: 999px;
  background: rgba(122, 182, 162, 0.15);
  color: #d9f0e7;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  line-height: 1;
  text-transform: uppercase;
}

.chip-separator {
  color: var(--muted);
  font-weight: 700;
}

.result-grid {
  display: grid;
  gap: 0.7rem;
}

.result-card {
  padding: 0.8rem;
}

.result-card.compact-card .result-list {
  gap: 0.55rem;
}

.card-header h3 {
  margin: 0.3rem 0 0;
  font-size: 1.15rem;
}

.result-list {
  list-style: none;
  padding: 0;
  margin: 0.65rem 0 0;
  display: grid;
  gap: 0.55rem;
}

.result-list li {
  padding-top: 0.55rem;
  border-top: 1px solid var(--line-soft);
}

.result-list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.result-item-title {
  display: block;
  color: var(--text);
  font-weight: 700;
  line-height: 1.4;
}

.result-item-reason {
  display: block;
  margin-top: 0.32rem;
  color: var(--muted);
  line-height: 1.38;
  overflow-wrap: anywhere;
}

.result-item-actions {
  margin-top: 0.55rem;
}

@media (max-width: 759px) {
  .page-shell {
    width: min(1320px, calc(100% - 1rem));
    padding: 0.55rem 0 1.35rem;
  }

  .hero {
    padding: 0.25rem 0 0.6rem;
  }

  .hero-kicker {
    font-size: 0.66rem;
  }

  .hero h1 {
    margin: 0.26rem 0 0.42rem;
    font-size: clamp(1.9rem, 10vw, 2.5rem);
    line-height: 0.96;
  }

  .hero-copy {
    max-width: 31rem;
    font-size: 0.92rem;
    line-height: 1.42;
  }

  .input-panel {
    padding: 0.72rem;
  }

  .panel-nav {
    gap: 0.35rem;
    margin-bottom: 0.55rem;
  }

  .panel-nav-button {
    min-height: 2.55rem;
    padding: 0.32rem 0.56rem;
    font-size: 0.82rem;
    line-height: 1.15;
  }

  .panel-head p,
  .builder-help {
    font-size: 0.88rem;
    line-height: 1.38;
  }

  .builder-card {
    margin-top: 0.55rem;
    padding: 0.62rem;
  }

  .builder-card:first-of-type {
    margin-top: 0.45rem;
  }

  .builder-card-compact {
    padding: 0.58rem;
  }

  .builder-card.is-mobile-collapsed {
    padding: 0.56rem;
  }

  .explorer-card {
    scroll-margin-top: 0.5rem;
  }

  .builder-subsection {
    gap: 0.22rem;
    margin-top: 0.58rem;
    padding-top: 0.55rem;
  }

  .key-selector-button {
    min-height: 2.7rem;
    padding: 0.48rem 0.56rem;
    font-size: 0.83rem;
  }

  .key-summary-pill {
    width: 100%;
    justify-content: flex-start;
    min-height: 1.9rem;
    padding: 0.3rem 0.62rem;
    font-size: 0.84rem;
  }

  .mobile-key-selector-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.55rem;
    margin-top: 0.48rem;
    padding: 0.52rem 0.58rem;
    border: 1px solid rgba(122, 182, 162, 0.22);
    border-radius: var(--radius);
    background: rgba(122, 182, 162, 0.07);
  }

  .mobile-key-selector-toggle {
    padding: 0.5rem 0.7rem;
    font-size: 0.84rem;
  }

  .mobile-key-selector-field {
    min-width: min(12rem, 54vw);
  }

  .mobile-key-selector-select {
    min-height: 2.15rem;
    padding: 0.38rem 1.85rem 0.38rem 0.62rem;
    font-size: 0.84rem;
  }

  #explorerMenuLabel {
    display: none;
  }

  #keySelectorSection[hidden] {
    display: none;
  }

  .detail-actions .detail-button,
  .variation-action,
  .item-action-button {
    min-width: 0;
    padding: 0.6rem 0.72rem;
    font-size: 0.88rem;
  }

  .detail-actions .detail-button {
    flex: 1 1 100%;
  }

  .detail-card {
    padding: 0.72rem;
  }

  .detail-hero {
    gap: 0.5rem;
  }

  .detail-hero .card-header h3 {
    font-size: 1.2rem;
  }

  .detail-intro {
    gap: 0.28rem;
    margin-top: 0.45rem;
  }

  .summary-note {
    line-height: 1.4;
    font-size: 0.92rem;
  }

  .detail-badges {
    gap: 0.35rem;
    margin-top: 0.45rem;
  }

  .detail-badge {
    min-height: 1.72rem;
    padding: 0.22rem 0.56rem;
    font-size: 0.8rem;
  }

  .detail-main {
    gap: 0.55rem;
    margin-top: 0.58rem;
  }

  .detail-card:not(.is-scale-detail) .diagram-shell {
    min-height: 12.6rem;
  }

  .diagram-card,
  .detail-block {
    padding: 0.58rem;
  }

  .detail-grid {
    gap: 0.48rem;
    margin-top: 0.55rem;
  }

  .detail-label {
    font-size: 0.73rem;
  }

  .detail-value,
  .detail-tip-text,
  .variation-reason,
  .detail-helper {
    font-size: 0.9rem;
    line-height: 1.4;
  }

  .detail-variations {
    margin-top: 0.68rem;
  }

  .detail-list {
    margin-top: 0.42rem;
    gap: 0.45rem;
  }

  .detail-list li {
    gap: 0.3rem;
    padding-top: 0.48rem;
  }

  .detail-list-variations {
    grid-template-columns: 1fr;
  }

  .detail-list-variations li {
    gap: 0.28rem;
    padding: 0.46rem 0;
    border-left: 0;
    border-right: 0;
    border-bottom: 0;
    border-radius: 0;
    background: transparent;
  }

  .variation-row {
    gap: 0.3rem;
  }

  .variation-row .chord-chip {
    min-height: 1.95rem;
    padding: 0.34rem 0.56rem;
    font-size: 0.85rem;
  }

  .variation-row .variation-action {
    padding: 0.38rem 0.56rem;
    font-size: 0.8rem;
  }

  .chord-chip {
    min-height: 2rem;
    padding: 0.36rem 0.58rem;
    font-size: 0.85rem;
  }

  .result-chip-row,
  .variation-row {
    align-items: stretch;
  }

  .scale-shape {
    gap: 0.42rem;
  }

  .scale-diagram {
    width: min(100%, 13rem);
  }

  .detail-card:not(.is-scale-detail) .chord-diagram:not(.scale-diagram) {
    width: min(100%, 13rem);
  }

  .scale-diagram-frame {
    padding: 0;
  }
}

@media (min-width: 760px) {
  .panel-nav {
    display: inline-flex;
    flex-wrap: wrap;
  }

  .panel-nav-button {
    width: auto;
    text-align: left;
  }

  .key-selector-grid {
    display: flex;
  }

  .page-shell {
    width: min(1380px, calc(100% - 2.25rem));
    padding-top: 1.2rem;
  }

  .maker-mark {
    margin-top: 1.15rem;
  }

  .workspace {
    grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
    align-items: start;
  }

  .primary-column {
    gap: 0.8rem;
  }

  .input-panel,
  .detail-card,
  .result-card {
    padding: 1rem;
  }

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

  .detail-card.is-key-detail .detail-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .detail-card.is-key-detail .detail-grid:first-child {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  }

  .detail-card.is-scale-detail .detail-grid:first-child {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .detail-card.is-scale-detail .detail-grid-extra {
    grid-template-columns: 1fr;
  }

  .detail-card.is-scale-detail .diagram-card {
    padding: 0.82rem;
  }

  .detail-card.is-scale-detail .diagram-shell {
    place-items: start center;
  }

  .scale-shape {
    width: min(100%, 44rem);
    margin-inline: auto;
  }

  .scale-shape-body {
    grid-template-columns: 1fr;
    gap: 0.48rem;
  }

  .scale-diagram {
    width: min(100%, 15.75rem);
  }

  .detail-card.is-key-detail .detail-grid-extra {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .detail-hero {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .detail-card.is-key-detail .detail-main {
    grid-template-columns: 1fr;
  }

  .detail-section:first-child .detail-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .detail-block-story {
    grid-column: 1 / -1;
  }

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

  .action-row {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .builder-actions {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .manual-input-card textarea {
    min-height: 5.5rem;
  }
}

@media (min-width: 980px) {
  .detail-card.is-key-detail .detail-grid:first-child {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  }

  .detail-card.is-scale-detail .diagram-card {
    padding: 0.9rem;
  }

  .scale-diagram {
    width: min(100%, 16.2rem);
  }

  .detail-grid-extra {
    grid-template-columns: 1fr;
  }
}