.scales-shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 32px 0 72px;
}

.scales-hero {
  max-width: 820px;
  margin-bottom: 52px;
}

.scales-hero h1 {
  margin: 0;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: clamp(3rem, 6vw, 5.25rem);
  font-weight: 400;
  line-height: 0.9;
  text-wrap: balance;
}

.section-kicker {
  margin: 0 0 7px;
  color: #9a5d21;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
}

.scales-shell .card-label,
.path-degree {
  color: #9a5d21;
}

.scale-workbench,
.fretboard-card,
.practice-path-card {
  margin-top: 28px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.scale-controls {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
  padding: 28px 30px;
  border-bottom: 1px solid var(--line);
}

.scale-controls h2,
.section-heading h2,
.scale-tips h2 {
  margin: 0;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  font-weight: 400;
  line-height: 1;
  text-wrap: balance;
}

.scale-fields {
  display: grid;
  grid-template-columns: 150px minmax(220px, 1fr);
  gap: 12px;
  width: min(100%, 500px);
}

.scale-fields label span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
}

.scale-fields select {
  width: 100%;
  min-height: 46px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 9px;
  color: var(--ink);
  background: var(--surface);
  font: inherit;
  font-weight: 700;
}

.scale-fields select:focus-visible {
  outline: 3px solid var(--accent-soft);
  outline-offset: 3px;
}

.scale-summary {
  display: grid;
  grid-template-columns: minmax(230px, 0.8fr) minmax(0, 1.8fr);
  gap: 36px;
  padding: 30px;
}

.scale-title-block h2 {
  margin: 0;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: clamp(2.7rem, 6vw, 4.5rem);
  font-weight: 400;
  line-height: 0.9;
  text-wrap: balance;
}

.scale-title-block > p:last-child {
  max-width: 380px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.6;
  text-wrap: pretty;
}

.scale-facts {
  display: grid;
  gap: 8px;
  margin: 0;
}

.scale-facts div {
  padding: 14px 16px;
  border-radius: 10px;
  background: var(--paper);
}

.scale-facts dt,
.scale-facts dd {
  margin: 0;
}

.scale-facts dt {
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
}

.scale-facts dd {
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  line-height: 1.5;
}

.fretboard-card,
.practice-path-card {
  padding: 30px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 24px;
}

.section-heading > p {
  max-width: 430px;
  margin: 0;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.55;
  text-align: right;
  text-wrap: pretty;
}

.scale-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px 18px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 700;
}

.scale-legend span {
  display: flex;
  align-items: center;
  gap: 7px;
}

.scale-legend i {
  width: 13px;
  height: 13px;
  border-radius: 50%;
}

.root-swatch {
  background: var(--accent);
}

.scale-swatch {
  background: var(--dark-ring);
}

.scale-fretboard {
  display: grid;
  gap: 22px;
}

.fretboard-region h3 {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.67rem;
  text-transform: uppercase;
}

.fretboard-grid {
  display: grid;
  grid-template-columns: 54px repeat(var(--fret-count), minmax(34px, 1fr));
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper);
}

.fretboard-corner,
.fret-number,
.string-label,
.fret-cell {
  min-width: 0;
  min-height: 54px;
}

.fretboard-corner,
.fret-number {
  display: grid;
  place-items: center;
  min-height: 30px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.58rem;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

.fret-number {
  border-left: 1px solid var(--line);
}

.string-label {
  display: grid;
  place-items: center;
  border-top: 1px solid var(--line);
  font-size: 0.64rem;
  font-weight: 700;
}

.fret-cell {
  display: grid;
  place-items: center;
  border-top: 1px solid #aaa59a;
  border-left: 1px solid var(--line);
}

.fret-note {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  color: var(--surface);
  background: var(--dark-ring);
  line-height: 1;
}

.fret-note.is-root {
  color: var(--ink);
  background: var(--accent);
}

.fret-note.is-root small {
  color: #3f2d1c;
}

.fret-note strong {
  font-size: 0.68rem;
  font-weight: 700;
}

.fret-note small {
  margin-top: 2px;
  color: #e6e1d6;
  font-size: 0.48rem;
  font-weight: 700;
}

.fretboard-note {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 0.7rem;
  line-height: 1.6;
  text-wrap: pretty;
}

.fretboard-note strong {
  color: var(--ink);
}

.scale-path {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.scale-path li {
  display: grid;
  gap: 5px;
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper);
}

.scale-path li.is-root {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.scale-path strong {
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 1.55rem;
  font-weight: 400;
}

.scale-path span:not(.path-degree) {
  color: var(--muted);
  font-size: 0.62rem;
  font-variant-numeric: tabular-nums;
}

.path-degree {
  font-size: 0.6rem;
  font-weight: 700;
}

.finger-key {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 0.66rem;
}

.finger-key span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.finger-key strong {
  display: grid;
  place-items: center;
  width: 23px;
  height: 23px;
  border-radius: 50%;
  color: var(--surface);
  background: var(--dark-ring);
  font-variant-numeric: tabular-nums;
}

.scale-tips {
  margin-top: 28px;
  padding: 28px 30px;
  border-left: 4px solid var(--accent);
  border-radius: 12px;
  background: var(--surface);
}

.scale-tips ul {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 34px;
  margin: 18px 0 0;
  padding-left: 20px;
  color: var(--muted);
  font-size: 0.74rem;
  line-height: 1.55;
}

@media (max-width: 820px) {
  .scale-controls,
  .section-heading {
    display: block;
  }

  .scale-fields {
    margin-top: 20px;
  }

  .scale-summary {
    grid-template-columns: 1fr;
  }

  .scale-legend,
  .section-heading > p {
    justify-content: flex-start;
    margin-top: 14px;
    text-align: left;
  }
}

@media (max-width: 640px) {
  .scales-shell {
    width: min(100% - 24px, 1180px);
    padding-top: 24px;
  }

  .scales-hero {
    margin-bottom: 42px;
  }

  .scale-controls,
  .scale-summary,
  .fretboard-card,
  .practice-path-card,
  .scale-tips {
    padding: 22px 18px;
  }

  .scale-fields,
  .scale-tips ul {
    grid-template-columns: 1fr;
  }

  .fretboard-grid {
    grid-template-columns: 44px repeat(var(--fret-count), minmax(30px, 1fr));
  }

  .fretboard-corner,
  .fret-number,
  .string-label,
  .fret-cell {
    min-height: 46px;
  }

  .fretboard-corner,
  .fret-number {
    min-height: 28px;
  }

  .fret-note {
    width: 30px;
    height: 30px;
  }

  .fret-note strong {
    font-size: 0.59rem;
  }

  .fret-note small {
    font-size: 0.43rem;
  }

  .scale-path {
    grid-template-columns: repeat(2, 1fr);
  }
}