/* Scale Explorer */
.scale-page {
    max-width: 1180px;
}

.scale-page-heading {
    max-width: 760px;
    margin-bottom: 30px;
}

.scale-page-heading .home-eyebrow {
    margin-bottom: 10px;
}

.scale-workspace {
    display: grid;
    gap: 18px;
}

.scale-control-panel,
.scale-summary,
.scale-display-toolbar,
.fretboard-card {
    color: var(--text);
    background: var(--panel-background);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius);
    box-shadow: 0 10px 26px var(--shadow-color);
}

.scale-control-panel {
    padding: 22px;
    border-left: 4px solid var(--teal);
}

.scale-control-heading,
.scale-display-toolbar,
.scale-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.scale-control-heading {
    margin-bottom: 20px;
}

.scale-control-heading h2,
.scale-summary h2 {
    margin: 2px 0 0;
    color: var(--gold-light);
    font-size: 25px;
}

.scale-control-heading > p,
.scale-summary p {
    margin: 0;
    color: var(--copy-text);
}

.scale-section-kicker {
    margin: 0;
    color: var(--teal) !important;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.scale-control-grid {
    display: grid;
    grid-template-columns: minmax(230px, 0.7fr) minmax(0, 1.3fr);
    align-items: end;
    gap: 20px;
}

.scale-select-field {
    display: grid;
    gap: 8px;
    color: var(--text-body);
    font-weight: 600;
}

.scale-select-field select {
    width: 100%;
    min-height: 46px;
    padding: 0 13px;
    color: var(--control-text);
    background: var(--control-background);
    border: 1px solid var(--border-soft);
    border-radius: 7px;
    font: inherit;
}

.scale-root-field,
.scale-length-field,
.scale-view-field,
.scale-label-field {
    min-width: 0;
    margin: 0;
    padding: 0;
    border: 0;
}

.scale-root-field legend,
.scale-length-field legend,
.scale-view-field legend,
.scale-label-field legend {
    margin-bottom: 8px;
    color: var(--text-body);
    font-size: 14px;
    font-weight: 600;
}

.scale-root-grid {
    display: grid;
    grid-template-columns: repeat(6, minmax(46px, 1fr));
    gap: 6px;
}

.scale-root-grid button,
.scale-length-toggle button,
.scale-range-buttons button,
.scale-label-toggle button {
    min-height: 38px;
    padding: 7px 9px;
    color: var(--text-body);
    background: var(--control-background);
    border: 1px solid var(--border-soft);
    border-radius: 6px;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    transition:
        color 0.18s ease,
        background-color 0.18s ease,
        border-color 0.18s ease,
        transform 0.18s ease;
}

.scale-root-grid button:hover,
.scale-length-toggle button:hover,
.scale-range-buttons button:hover,
.scale-label-toggle button:hover {
    color: var(--secondary-hover-text);
    background: var(--secondary-hover-background);
    border-color: var(--hover-border);
    transform: translateY(-1px);
}

.scale-root-grid button.is-selected,
.scale-length-toggle button.is-selected,
.scale-range-buttons button.is-selected,
.scale-label-toggle button.is-selected {
    color: var(--chord-accent-text);
    background: var(--chord-accent);
    border-color: var(--chord-accent);
}

.scale-root-grid button:focus-visible,
.scale-length-toggle button:focus-visible,
.scale-range-buttons button:focus-visible,
.scale-label-toggle button:focus-visible,
.scale-play-button:focus-visible,
.scale-download-button:focus-visible,
.scale-select-field select:focus-visible,
.fretboard-scroll:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 3px;
}

.scale-summary {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    padding: 22px;
}

.scale-summary p:not(.scale-section-kicker) {
    max-width: 720px;
    margin-top: 8px;
    line-height: 1.65;
}

.scale-play-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    padding: 10px 17px;
    color: var(--primary-button-text);
    background: var(--primary-button-background);
    border: 1px solid var(--primary-button-background);
    border-radius: 999px;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.18s ease, background-color 0.18s ease;
}

.scale-summary-actions {
    display: flex;
    align-items: center;
    gap: 9px;
}

.scale-download-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    padding: 10px 15px;
    color: var(--secondary-button-text);
    background: var(--secondary-button-background);
    border: 1px solid var(--secondary-button-border);
    border-radius: 999px;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    transition:
        color 0.18s ease,
        background-color 0.18s ease,
        border-color 0.18s ease,
        transform 0.18s ease;
}

.scale-download-button:hover {
    color: var(--secondary-hover-text);
    background: var(--secondary-hover-background);
    border-color: var(--hover-border);
    transform: translateY(-2px);
}

.scale-download-button:disabled {
    cursor: wait;
    opacity: 0.72;
}

.scale-play-button:hover {
    color: var(--primary-button-hover-text);
    background: var(--primary-button-hover-background);
    border-color: var(--primary-button-hover-background);
    transform: translateY(-2px);
}

.scale-play-button:disabled {
    cursor: wait;
    opacity: 0.72;
}

.scale-interval-list {
    grid-column: 1 / -1;
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
    margin-top: 18px;
    padding-top: 18px;
    border-top: 1px solid var(--divider-color);
}

.scale-tool-links {
    grid-column: 1 / -1;
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
    margin-top: 2px;
}

.scale-tool-links a {
    display: inline-flex;
    align-items: center;
    min-height: 36px;
    padding: 8px 12px;
    color: var(--secondary-button-text);
    background: var(--secondary-button-background);
    border: 1px solid var(--secondary-button-border);
    border-radius: 999px;
    font-size: 13px;
    font-weight: 800;
    text-decoration: none;
    transition: transform 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.scale-tool-links a:hover {
    color: var(--secondary-hover-text);
    background: var(--secondary-hover-background);
    border-color: var(--hover-border);
    transform: translateY(-1px);
}

.scale-interval-chip {
    display: inline-grid;
    grid-template-columns: auto auto;
    align-items: center;
    gap: 7px;
    min-width: 54px;
    padding: 7px 10px;
    color: #fff;
    background: var(--interval-color);
    border: 1px solid color-mix(in srgb, var(--interval-color) 72%, white);
    border-radius: 999px;
    box-shadow: 0 5px 13px color-mix(in srgb, var(--interval-color) 24%, transparent);
}

.scale-interval-chip strong {
    font-size: 13px;
}

.scale-interval-chip small {
    padding-left: 7px;
    border-left: 1px solid rgba(255, 255, 255, 0.36);
    font-size: 12px;
}

.scale-interval-chip.is-root {
    box-shadow:
        0 0 0 2px var(--panel-background),
        0 0 0 4px color-mix(in srgb, var(--interval-color) 76%, white);
}

.scale-display-toolbar {
    align-items: flex-end;
    padding: 16px 18px;
}

.scale-length-field {
    flex: 0 0 auto;
}

.scale-view-field {
    flex: 1;
}

.scale-range-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.scale-range-buttons button {
    min-height: 34px;
    padding: 5px 11px;
    font-size: 13px;
}

.scale-label-field {
    flex: 0 0 auto;
}

.scale-length-toggle,
.scale-label-toggle {
    display: grid;
    grid-template-columns: 1fr 1fr;
    padding: 3px;
}

.scale-length-toggle button,
.scale-label-toggle button {
    min-height: 32px;
    padding: 4px 11px;
    border: 0;
}

.fretboard-card {
    overflow: hidden;
}

.fretboard-help {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 13px 18px;
    color: var(--text-subtle);
    border-bottom: 1px solid var(--border-soft);
    font-size: 13px;
}

.fretboard-help span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.scale-legend-root {
    width: 12px;
    height: 12px;
    background: var(--interval-root);
    border: 2px solid #fff;
    border-radius: 50%;
}

.fretboard-scroll {
    overflow-x: auto;
    padding: 18px;
    background:
        linear-gradient(180deg, color-mix(in srgb, var(--gold) 8%, transparent), transparent 45%),
        var(--subpanel-background);
    scrollbar-color: var(--gold) var(--control-background);
}

.fretboard {
    --visible-frets: 16;
    display: grid;
    grid-template-columns: 48px repeat(var(--visible-frets), minmax(54px, 1fr));
    min-width: calc(48px + var(--visible-frets) * 54px);
    color: var(--text);
}

.fretboard-corner,
.fret-number {
    display: grid;
    place-items: center;
    height: 27px;
    color: var(--text-subtle);
    font-size: 12px;
    font-weight: 600;
}

.string-label {
    display: grid;
    place-items: center;
    height: 48px;
    color: var(--gold-light);
    background: color-mix(in srgb, var(--panel-background) 80%, transparent);
    border-right: 1px solid var(--hover-border);
    font-size: 13px;
    font-weight: 700;
}

.fret-cell {
    position: relative;
    display: grid;
    place-items: center;
    height: 48px;
    border-right: 2px solid color-mix(in srgb, var(--gold) 35%, var(--border-soft));
}

.fret-cell::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    height: 1px;
    background: color-mix(in srgb, var(--text-subtle) 64%, transparent);
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.28);
}

.fret-cell.open-string-cell {
    border-right-width: 5px;
    border-right-color: var(--gold-light);
}

.fret-note {
    position: relative;
    z-index: 1;
    display: grid;
    place-items: center;
    width: 30px;
    height: 30px;
    color: #fff;
    background: var(--interval-color);
    border: 2px solid color-mix(in srgb, var(--interval-color) 70%, white);
    border-radius: 50%;
    box-shadow: 0 3px 9px rgba(0, 0, 0, 0.32);
    font-size: 11px;
    font-weight: 700;
}

.fret-note.is-root {
    width: 34px;
    height: 34px;
    border: 3px solid #fff;
    box-shadow:
        0 0 0 2px var(--interval-root),
        0 4px 11px rgba(0, 0, 0, 0.38);
}

.fret-position-marker {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    height: 24px;
}

.fret-position-marker span {
    width: 7px;
    height: 7px;
    background: color-mix(in srgb, var(--gold) 70%, transparent);
    border-radius: 50%;
}

.fretboard-bottom-corner {
    height: 24px;
}

.interval-color-0 {
    --interval-color: var(--interval-root);
}

.interval-color-1 {
    --interval-color: var(--interval-two);
}

.interval-color-2 {
    --interval-color: var(--interval-three);
}

.interval-color-3 {
    --interval-color: var(--interval-four);
}

.interval-color-4 {
    --interval-color: var(--interval-five);
}

.interval-color-5 {
    --interval-color: var(--interval-six);
}

.interval-color-6 {
    --interval-color: var(--interval-seven);
}

:root {
    --interval-root: #d94f68;
    --interval-two: #db8d2e;
    --interval-three: #3e9ed0;
    --interval-four: #2fa875;
    --interval-five: #7667d8;
    --interval-six: #bd659c;
    --interval-seven: #6f8d3c;
}

html[data-theme="light"] {
    --interval-root: #b83d55;
    --interval-two: #b66c1f;
    --interval-three: #267ca6;
    --interval-four: #247f5b;
    --interval-five: #5d50b2;
    --interval-six: #96507c;
    --interval-seven: #58722f;
}

html[data-theme="light"] .scale-control-panel,
html[data-theme="light"] .scale-summary,
html[data-theme="light"] .scale-display-toolbar,
html[data-theme="light"] .fretboard-card {
    border-color: rgba(88, 72, 58, 0.24);
}

html[data-theme="light"] .fret-cell::before {
    background: color-mix(in srgb, var(--text-subtle) 52%, transparent);
    box-shadow: none;
}

@media (max-width: 900px) {
    .scale-control-grid {
        grid-template-columns: 1fr;
    }

    .scale-display-toolbar {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (max-width: 620px) {
    .scale-page {
        padding-inline: 16px;
    }

    .scale-control-panel,
    .scale-summary {
        padding: 18px;
    }

    .scale-control-heading,
    .scale-summary {
        align-items: flex-start;
        grid-template-columns: 1fr;
        flex-direction: column;
    }

    .scale-control-heading > p {
        font-size: 13px;
    }

    .scale-root-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .scale-play-button {
        width: 100%;
    }

    .scale-summary-actions {
        display: grid;
        grid-template-columns: 1fr;
        width: 100%;
    }

    .scale-download-button {
        width: 100%;
    }

    .scale-interval-list {
        grid-column: auto;
    }

    .scale-display-toolbar {
        padding: 15px;
    }

    .scale-range-buttons {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
    }

    .scale-range-buttons button {
        min-width: 0;
    }

    .scale-length-field,
    .scale-label-field,
    .scale-length-toggle,
    .scale-label-toggle {
        width: 100%;
    }

    .fretboard-help {
        align-items: flex-start;
        flex-direction: column;
    }

    .fretboard-scroll {
        padding: 14px 10px 16px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .scale-root-grid button,
    .scale-length-toggle button,
    .scale-range-buttons button,
    .scale-label-toggle button,
    .scale-play-button,
    .scale-download-button {
        transition: none;
    }
}