.music-tools {
    --tool-line: rgba(127, 33, 26, 0.18);
    --tool-ink: var(--app-logo-red-dark, #7F211A);
    --tool-muted: rgba(32, 23, 25, 0.68);
    --tool-surface: rgba(255, 248, 223, 0.72);
}

.music-tools__picker {
    display: none;
    position: relative;
    width: max-content;
    max-width: 100%;
    margin-bottom: 0.35rem;
}

.music-tools__picker-trigger {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    min-width: 10rem;
    min-height: 2.75rem;
    padding: 0.45rem 0.75rem;
    border: 1px solid var(--tool-line);
    border-radius: 0.7rem;
    color: var(--bs-body-color);
    background: var(--bs-body-bg);
    font-weight: 700;
    text-align: left;
}

.music-tools__picker-trigger > span {
    flex: 1;
}

.music-tools__picker-trigger > .ti:first-child {
    color: var(--app-logo-red, #AF3925);
    font-size: 1.15rem;
}

.music-tools__picker-chevron {
    color: var(--tool-muted);
    transition: transform 0.16s ease;
}

.music-tools__picker-trigger[aria-expanded="true"] .music-tools__picker-chevron {
    transform: rotate(180deg);
}

.music-tools__picker-overlay[hidden] {
    display: none !important;
}

.music-tools__picker-panel {
    position: relative;
    color: var(--bs-body-color);
    background: var(--bs-body-bg);
    border: 1px solid var(--tool-line);
    box-shadow: 0 0.8rem 2.2rem rgba(32, 23, 25, 0.2);
}

.music-tools__picker-close {
    display: grid;
    place-items: center;
    width: 2.75rem;
    height: 2.75rem;
    margin-left: auto;
    border: 0;
    border-radius: 0.65rem;
    color: var(--bs-secondary-color);
    background: transparent;
    font-size: 1.2rem;
}

.music-tools__picker-close:hover {
    color: var(--tool-ink);
    background: color-mix(in srgb, var(--app-logo-cream, #FCF3CC) 55%, transparent);
}

.music-tools__picker-options {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.4rem;
}

.music-tools__picker-option {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    min-width: 0;
    min-height: 2.75rem;
    padding: 0.45rem 0.55rem;
    border: 1px solid transparent;
    border-radius: 0.65rem;
    color: var(--bs-body-color);
    font-weight: 650;
    text-decoration: none;
}

.music-tools__picker-option > .ti:first-child {
    flex: 0 0 1.25rem;
    color: var(--app-logo-red, #AF3925);
    font-size: 1.15rem;
    text-align: center;
}

.music-tools__picker-option > span {
    min-width: 0;
    overflow-wrap: anywhere;
}

.music-tools__picker-option:hover {
    background: color-mix(in srgb, var(--app-logo-cream, #FCF3CC) 52%, transparent);
}

.music-tools__picker-option.is-active {
    color: #fff;
    background: var(--app-logo-red, #AF3925);
    border-color: var(--app-logo-red, #AF3925);
}

.music-tools__picker-option.is-active > .ti:first-child,
.music-tools__picker-option.is-active .music-tools__picker-check {
    color: #fff;
}

.music-tools__picker-check {
    flex: 0 0 auto;
    margin-left: auto;
    font-size: 1.1rem;
}

.music-tools__tabs {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    overflow-x: auto;
    padding: 0.15rem 0.8rem;
    margin-bottom: 0.5rem;
    overscroll-behavior-inline: contain;
    scroll-snap-type: x proximity;
    scrollbar-width: none;
}

.music-tools__tabs::-webkit-scrollbar {
    display: none;
}

.music-tools__tabs.has-overflow-left:not(.has-overflow-right) {
    -webkit-mask-image: linear-gradient(to right, transparent, #000 0.65rem);
    mask-image: linear-gradient(to right, transparent, #000 0.65rem);
}

.music-tools__tabs.has-overflow-right:not(.has-overflow-left) {
    -webkit-mask-image: linear-gradient(to left, transparent, #000 0.65rem);
    mask-image: linear-gradient(to left, transparent, #000 0.65rem);
}

.music-tools__tabs.has-overflow-left.has-overflow-right {
    -webkit-mask-image: linear-gradient(to right, transparent, #000 0.65rem, #000 calc(100% - 0.65rem), transparent);
    mask-image: linear-gradient(to right, transparent, #000 0.65rem, #000 calc(100% - 0.65rem), transparent);
}

.music-tools__tab {
    display: inline-flex;
    align-items: center;
    flex: 0 0 auto;
    gap: 0.35rem;
    min-height: 1.9rem;
    padding: 0.25rem 0.5rem;
    border: 1px solid transparent;
    border-radius: 0.85rem;
    color: var(--bs-secondary-color);
    background: transparent;
    font-size: 0.86rem;
    font-weight: 650;
    text-decoration: none;
    white-space: nowrap;
    scroll-snap-align: start;
    transition: color 0.16s ease, background-color 0.16s ease, border-color 0.16s ease, transform 0.16s ease;
}

.music-tools__tab:hover:not(.is-active) {
    background: color-mix(in srgb, var(--app-logo-cream, #FCF3CC) 42%, transparent);
}

.music-tools__tab.is-active {
    margin: 0.05rem;
    color: #fff;
    background: var(--app-logo-red, #AF3925);
    border-color: var(--app-logo-red, #AF3925);
    font-weight: 700;
    box-shadow: none;
}

.music-tools a:focus-visible,
.music-tools button:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--app-logo-red, #AF3925) 42%, transparent);
    outline-offset: 2px;
}

@media (max-width: 767.98px) and (orientation: portrait),
    (orientation: landscape) and (max-height: 560px) and (max-width: 991.98px) {
    .music-tools__tabs {
        display: none;
    }

    .music-tools__picker {
        display: block;
    }
}

@media (max-width: 767.98px) and (orientation: portrait) {
    body.tool-picker-sheet-open {
        overflow: hidden;
    }

    .music-tools__picker {
        width: 100%;
        margin-bottom: 0.35rem;
    }

    .music-tools__picker-trigger {
        width: max-content;
        min-width: 11rem;
        min-height: 2.75rem;
    }

    .music-tools__picker-overlay.is-sheet {
        position: fixed;
        z-index: 1090;
        inset: 0;
        background: rgba(25, 19, 18, 0.48);
        overscroll-behavior: contain;
    }

    .music-tools__picker-overlay.is-sheet .music-tools__picker-panel {
        position: absolute;
        top: var(--tool-picker-top, 7rem);
        left: var(--tool-picker-left, 1rem);
        width: min(26rem, var(--tool-picker-width, calc(100vw - 2rem)));
        max-height: min(26rem, calc(100dvh - var(--tool-picker-top, 7rem) - 6rem));
        padding: 0.4rem 0.75rem 0.75rem;
        overflow-x: hidden;
        overflow-y: auto;
        border-radius: 0.85rem;
        box-shadow: 0 0.6rem 1.6rem rgba(32, 23, 25, 0.2);
        overscroll-behavior: contain;
        -webkit-overflow-scrolling: touch;
    }

    .music-tools__picker-overlay.is-sheet .music-tools__picker-close {
        position: absolute;
        top: 0.25rem;
        right: 0.4rem;
    }

    .music-tools__picker-overlay.is-sheet .music-tools__picker-options {
        padding-top: 0.2rem;
    }
}

@media (orientation: landscape) and (max-height: 560px) and (max-width: 991.98px) {
    .music-tools__picker-overlay.is-anchored {
        position: absolute;
        z-index: 1090;
        top: calc(100% + 0.35rem);
        left: 0;
        width: min(24rem, calc(100vw - var(--mobile-nav-rail-width, 0px) - 1.5rem));
        max-width: calc(100vw - var(--mobile-nav-rail-width, 0px) - 1.5rem);
    }

    .music-tools__picker-overlay.is-anchored .music-tools__picker-panel {
        max-height: calc(100dvh - 9rem);
        padding: 0.35rem;
        overflow-x: hidden;
        overflow-y: auto;
        border-radius: 0.75rem;
        overscroll-behavior: contain;
        -webkit-overflow-scrolling: touch;
    }

    .music-tools__picker-overlay.is-anchored .music-tools__picker-close {
        width: 2.75rem;
        height: 2.75rem;
    }
}

.music-tool-panel {
    display: none;
}

.music-tool-panel.is-active {
    display: block;
}

.music-tool-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 1rem;
}

.music-tool-grid--circle {
    align-items: center;
    grid-template-areas:
        "wheel"
        "details";
}

.music-tool-grid--circle > .music-tool-copy {
    grid-area: details;
}

.music-tool-grid--circle > .circle-of-fifths {
    grid-area: wheel;
}

.music-tool-grid--scales {
    align-items: start;
}

.music-tool-copy,
.fretboard-shell,
.metronome-tool,
.scale-detail,
.chord-library__section,
.tuning-detail,
.tuner-tool {
    padding: 1rem;
    border: 1px solid var(--tool-line);
    border-radius: 8px;
    background: var(--tool-surface);
}

.music-tool-copy h2,
.scale-detail h2,
.tuning-detail h2 {
    color: var(--tool-ink);
}

.music-tool-copy p,
.scale-detail p,
.chord-library__section p,
.tuning-detail p {
    color: var(--tool-muted);
}

.music-tool-copy__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.85rem;
    flex-wrap: wrap;
}

.music-tool-copy__header h2 {
    margin-bottom: 0;
}

.music-tool-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.85rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.music-tool-panel-header h2 {
    margin-bottom: 0;
    color: var(--tool-ink);
}

.music-tool-segment {
    display: inline-flex;
    gap: 0.2rem;
    padding: 0.2rem;
    border: 1px solid var(--tool-line);
    border-radius: 8px;
    background: var(--bs-body-bg);
}

.music-tool-segment__button {
    min-height: 2rem;
    padding: 0.3rem 0.6rem;
    border: 0;
    border-radius: 6px;
    color: var(--tool-ink);
    background: transparent;
    font-size: 0.82rem;
    font-weight: 800;
    white-space: nowrap;
}

.music-tool-segment__button.is-active {
    color: #fff;
    background: var(--app-logo-red, #AF3925);
}

@media (prefers-reduced-motion: reduce) {
    .music-tools__tab {
        transition: none;
    }

    .music-tools__tab:hover:not(.is-active) {
        transform: none;
    }
}

.circle-of-fifths {
    --circle-outer-radius: clamp(6.25rem, 40vw, 8.5rem);
    --circle-inner-radius: clamp(4.7rem, 25.5vw, 5.4rem);
    position: relative;
    width: min(100%, 21rem);
    aspect-ratio: 1;
    margin: 0 auto;
    border: 1px solid var(--tool-line);
    border-radius: 50%;
    background: repeating-conic-gradient(
        from -105deg,
        rgba(175, 57, 37, 0.055) 0deg 29deg,
        rgba(12, 93, 112, 0.035) 30deg 59deg
    );
}

.circle-of-fifths__key {
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 2;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.12rem;
    width: 2.75rem;
    height: 2.75rem;
    border: 1px solid rgba(127, 33, 26, 0.28);
    border-radius: 999px;
    color: var(--tool-ink);
    background: var(--bs-body-bg);
    font-weight: 800;
    line-height: 1;
    transform: rotate(var(--angle)) translate(var(--circle-outer-radius)) rotate(calc(-1 * var(--angle))) translate(-50%, -50%);
}

.circle-of-fifths__degree {
    min-width: 0;
    padding: 0;
    border: 0;
    color: var(--tool-muted);
    background: transparent;
    font-size: 0.58rem;
    font-weight: 900;
    line-height: 1;
}

.circle-of-fifths__degree:empty {
    display: none;
}

.circle-of-fifths__name {
    line-height: 1;
    text-align: center;
    letter-spacing: -0.035em;
}

.circle-of-fifths__key .circle-of-fifths__name {
    font-size: 0.76rem;
}

.circle-of-fifths__relative-key {
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 1;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.12rem;
    width: 2.75rem;
    height: 2.75rem;
    border: 1px solid rgba(12, 93, 112, 0.24);
    border-radius: 999px;
    color: #0C5D70;
    background: rgba(255, 255, 255, 0.78);
    font-size: 0.74rem;
    font-weight: 800;
    line-height: 1;
    transform: rotate(var(--angle)) translate(var(--circle-inner-radius)) rotate(calc(-1 * var(--angle))) translate(-50%, -50%);
}

.circle-of-fifths__relative-key .circle-of-fifths__degree {
    color: var(--tool-muted);
}

.circle-of-fifths__key.is-active,
.circle-of-fifths__relative-key.is-active {
    color: #fff;
    background: var(--app-logo-red, #AF3925);
    border-color: var(--app-logo-red, #AF3925);
}

.circle-of-fifths__key.is-active .circle-of-fifths__degree {
    color: rgba(255, 255, 255, 0.88);
}

.music-key-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
    gap: 0.65rem;
    margin: 1rem 0;
}

.music-key-summary div,
.music-degree-list span {
    padding: 0.65rem;
    border: 1px solid var(--tool-line);
    border-radius: 8px;
    background: var(--bs-body-bg);
}

.music-key-summary span,
.music-degree-list strong {
    display: block;
    color: var(--tool-muted);
    font-size: 0.8rem;
    font-weight: 800;
    text-transform: uppercase;
}

.music-degree-list small {
    display: block;
    color: var(--tool-muted);
    font-size: 0.72rem;
    font-weight: 900;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.music-degree-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(5rem, 1fr));
    gap: 0.5rem;
}

.music-degree-list--scales {
    grid-template-columns: repeat(auto-fit, minmax(7rem, 1fr));
}

.music-degree-list--scales span {
    min-height: 4.5rem;
    display: grid;
    align-content: center;
    gap: 0.2rem;
}

.music-degree-list--scales strong {
    color: var(--tool-ink);
    font-size: 1.08rem;
    text-transform: none;
}

.music-tool-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.music-tool-controls label {
    display: grid;
    gap: 0.35rem;
    min-width: min(100%, 12rem);
    color: var(--tool-muted);
    font-size: 0.85rem;
    font-weight: 800;
}

.music-tool-control-group {
    display: grid;
    gap: 0.35rem;
    min-width: min(100%, 12rem);
    color: var(--tool-muted);
    font-size: 0.85rem;
    font-weight: 800;
}

.scale-detail__header {
    margin-bottom: 1rem;
}

.scale-detail__header h2 {
    margin-bottom: 0.35rem;
}

.scale-detail__header p {
    margin-bottom: 0;
}

.chord-library {
    display: grid;
    gap: 1rem;
}

.chord-library__summary {
    margin-bottom: 1rem;
    color: var(--tool-muted);
    font-size: 0.92rem;
    font-weight: 800;
}

.chord-library__empty {
    padding: 1rem;
    border: 1px dashed var(--tool-line);
    border-radius: 8px;
    color: var(--tool-muted);
    background: rgba(255, 255, 255, 0.42);
}

.chord-library__section-header {
    margin-bottom: 0.9rem;
}

.chord-library__section-header h3 {
    margin-bottom: 0.3rem;
    color: var(--tool-ink);
}

.chord-library__section-header p {
    margin-bottom: 0;
}

.chord-library__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
    gap: 0.75rem;
}

.tool-chord-card {
    display: grid;
    gap: 0.75rem;
    min-width: 0;
    padding: 0.85rem;
    border: 1px solid var(--tool-line);
    border-radius: 8px;
    background: var(--bs-body-bg);
}

.tool-chord-card__header h4 {
    margin-bottom: 0.15rem;
    color: var(--tool-ink);
}

.tool-chord-card__family {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    margin-bottom: 0.25rem;
    padding: 0.12rem 0.4rem;
    border: 1px solid rgba(127, 33, 26, 0.2);
    border-radius: 999px;
    color: var(--tool-muted);
    font-size: 0.68rem;
    font-weight: 900;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.tool-chord-card__subtitle {
    color: var(--tool-muted);
    font-size: 0.78rem;
    font-weight: 700;
}

.tool-chord-card__header p {
    margin-bottom: 0;
    font-size: 0.82rem;
}

.tool-chord-card__fingering {
    display: grid;
    gap: 0.15rem;
}

.tool-chord-card__fingering span {
    color: var(--tool-muted);
    font-size: 0.72rem;
    font-weight: 800;
    text-transform: uppercase;
}

.tool-chord-card__fingering strong {
    color: var(--tool-ink);
    font-size: 0.92rem;
    letter-spacing: 0.01em;
}

.tool-chord-diagram {
    --tool-chord-line: rgba(127, 33, 26, 0.28);
    --tool-chord-dot: var(--app-logo-red, #AF3925);
    --tool-chord-surface: var(--bs-body-bg);
    position: relative;
    display: flex;
    justify-content: center;
}

.tool-chord-diagram__neck {
    position: relative;
    width: 4.9rem;
    height: 5.8rem;
    margin-top: 0.9rem;
}

.tool-chord-diagram__string,
.tool-chord-diagram__fret,
.tool-chord-diagram__marker,
.tool-chord-diagram__base,
.tool-chord-diagram__dot,
.tool-chord-diagram__barre {
    position: absolute;
}

.tool-chord-diagram__string,
.tool-chord-diagram__fret {
    display: block;
    background: var(--tool-chord-line);
}

.tool-chord-diagram__string {
    top: 0;
    bottom: 0;
    width: 1px;
}

.tool-chord-diagram__fret {
    left: 0;
    right: 0;
    height: 1px;
}

.tool-chord-diagram__fret--nut {
    height: 2px;
    background: var(--tool-ink);
}

.tool-chord-diagram__marker {
    top: -0.78rem;
    color: var(--tool-muted);
    font-size: 0.72rem;
    font-weight: 700;
    line-height: 1;
    text-transform: uppercase;
    transform: translateX(-50%);
}

.tool-chord-diagram__base {
    top: 0.45rem;
    left: -1.45rem;
    color: var(--tool-muted);
    font-size: 0.68rem;
    font-weight: 700;
}

.tool-chord-diagram__dot,
.tool-chord-diagram__barre {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--tool-chord-surface);
    background: var(--tool-chord-dot);
    font-size: 0.58rem;
    font-weight: 800;
    z-index: 2;
}

.tool-chord-diagram__dot {
    width: 1.05rem;
    height: 1.05rem;
    border-radius: 999px;
    transform: translate(-50%, -50%);
}

.tool-chord-diagram__barre {
    height: 1.05rem;
    border-radius: 999px;
    transform: translateY(-50%);
}

.fretboard-shell {
    overflow-x: auto;
}

.fretboard {
    min-width: 52rem;
}

.fretboard__row,
.fretboard__frets {
    display: grid;
    grid-template-columns: minmax(3.4rem, 4.2rem) repeat(13, minmax(3rem, 1fr));
}

.fretboard__string-label,
.fretboard__frets-label {
    display: grid;
    place-items: center;
    gap: 0.1rem;
    min-height: 2.75rem;
    padding: 0.2rem;
    border-right: 1px solid var(--tool-line);
    color: var(--tool-ink);
    text-align: center;
}

.fretboard__string-label strong {
    font-size: 0.95rem;
    line-height: 1;
}

.fretboard__string-label small,
.fretboard__frets-label small {
    color: var(--tool-muted);
    font-size: 0.68rem;
    font-weight: 800;
    line-height: 1;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.fretboard__cell {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.75rem;
    border-right: 2px solid rgba(127, 33, 26, 0.24);
    border-bottom: 1px solid rgba(127, 33, 26, 0.18);
    background: linear-gradient(90deg, rgba(127, 33, 26, 0.12), rgba(127, 33, 26, 0.06));
    font-weight: 800;
}

.fretboard__cell.is-active {
    color: var(--tool-ink);
    background: rgba(252, 243, 204, 0.9);
}

.fretboard__cell.is-root {
    color: #fff;
    background: var(--app-logo-red, #AF3925);
}

.fretboard__frets span {
    padding-top: 0.45rem;
    color: var(--tool-muted);
    font-size: 0.78rem;
    font-weight: 800;
    text-align: center;
}

.tunings-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 1rem;
}

.tunings-list {
    display: grid;
    gap: 0.5rem;
}

.tuning-option {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.75rem;
    border: 1px solid var(--tool-line);
    border-radius: 8px;
    color: var(--tool-ink);
    background: var(--bs-body-bg);
    text-align: left;
}

.tuning-option span {
    color: var(--tool-muted);
}

.tuning-option.is-active {
    border-color: rgba(175, 57, 37, 0.48);
    background: rgba(252, 243, 204, 0.64);
}

.tuning-detail__header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

.tuning-detail__header i {
    color: var(--app-logo-red, #AF3925);
    font-size: 2rem;
}

.tuning-strings {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 0.5rem;
    margin-top: 1rem;
}

.tuning-strings span {
    display: grid;
    place-items: center;
    min-height: 4rem;
    border: 1px solid var(--tool-line);
    border-radius: 8px;
    background: var(--bs-body-bg);
}

.tuning-strings strong {
    color: var(--tool-ink);
    font-size: 1.2rem;
}

.tuning-strings small {
    color: var(--tool-muted);
    font-weight: 800;
}

.tuner-tool {
    display: grid;
    grid-template-areas:
        "meter"
        "targets"
        "controls"
        "actions";
    gap: 0.75rem;
    width: 100%;
}

.tuner-tool .music-tool-controls {
    grid-area: controls;
    margin-bottom: 0;
}

.tuner-target-panel {
    grid-area: targets;
    display: grid;
    gap: 0.65rem;
    margin-bottom: 1rem;
}

.tuner-target-panel__label {
    color: var(--tool-muted);
    font-size: 0.85rem;
    font-weight: 800;
    text-align: center;
}

.tuner-string-targets {
    display: grid;
    grid-template-columns: repeat(var(--tuner-target-columns, 1), minmax(0, 1fr));
    gap: 0.5rem;
}

.tuner-string-target {
    display: grid;
    gap: 0.12rem;
    min-width: 0;
    min-height: 3.7rem;
    padding: 0.55rem;
    border: 1px solid var(--tool-line);
    border-radius: 8px;
    color: var(--tool-ink);
    background: var(--bs-body-bg);
}

.tuner-string-target strong {
    font-size: 1.08rem;
}

.tuner-string-target small {
    color: var(--tool-muted);
    font-weight: 800;
}

.tuner-string-target.is-active {
    color: #fff;
    background: var(--app-logo-red, #AF3925);
    border-color: var(--app-logo-red, #AF3925);
}

.tuner-string-target.is-active small {
    color: rgba(255, 255, 255, 0.78);
}

.tuner-meter {
    grid-area: meter;
    display: grid;
    grid-template-areas:
        "note"
        "cents"
        "rail"
        "frequency";
    gap: 0.75rem;
    margin-bottom: 1rem;
    text-align: center;
}

.tuner-meter__note {
    grid-area: note;
    color: var(--tool-ink);
    font-size: clamp(3rem, 14vw, 6rem);
    font-weight: 900;
    line-height: 1;
}

.tuner-meter__freq,
.tuner-meter__cents {
    color: var(--tool-muted);
    font-weight: 800;
}

.tuner-meter__freq {
    grid-area: frequency;
}

.tuner-meter__cents {
    grid-area: cents;
}

.tuner-meter__rail {
    grid-area: rail;
    position: relative;
    height: 0.6rem;
    margin: 0.5rem 1rem;
    border-radius: 999px;
    background: linear-gradient(90deg, #0C5D70, #FCF3CC, #AF3925);
}

.tuner-meter__rail span {
    position: absolute;
    top: -0.45rem;
    bottom: -0.45rem;
    left: 50%;
    width: 2px;
    background: var(--tool-ink);
}

.tuner-meter__rail i {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 1rem;
    height: 1rem;
    border-radius: 999px;
    background: var(--tool-ink);
    transform: translate(-50%, -50%);
}

.tuner-tool__actions {
    grid-area: actions;
}

@media (orientation: landscape) and (min-width: 480px) {
    .music-tools {
        padding-block: 0.5rem !important;
    }

    .music-tools__tabs {
        margin-bottom: 0.45rem;
    }

    .tuner-tool {
        display: grid;
        grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
        grid-template-areas:
            "controls meter"
            "targets meter"
            "targets actions";
        align-items: center;
        column-gap: 0.8rem;
        row-gap: 0.25rem;
        padding: 0.65rem;
    }

    .tuner-tool .music-tool-controls {
        grid-area: controls;
        min-width: 0;
        gap: 0.45rem;
        margin-bottom: 0.5rem;
    }

    .tuner-tool .music-tool-controls label {
        flex: 1 1 0;
        min-width: 0;
        font-size: 0.72rem;
    }

    .tuner-tool .music-tool-controls .form-select {
        padding: 0.3rem 1.65rem 0.3rem 0.5rem;
        font-size: 0.82rem;
    }

    .tuner-target-panel {
        grid-area: targets;
        min-width: 0;
        gap: 0.3rem;
        margin-bottom: 0;
    }

    .tuner-target-panel__label {
        font-size: 0.72rem;
    }

    .tuner-string-targets {
        gap: 0.2rem;
    }

    .tuner-string-target {
        align-content: center;
        justify-items: center;
        gap: 0;
        min-height: 2.5rem;
        padding: 0.2rem 0.02rem;
    }

    .tuner-string-target strong {
        font-size: 0.68rem;
        line-height: 1.05;
        white-space: nowrap;
    }

    .tuner-string-target[data-note=""] strong {
        font-size: 0.58rem;
    }

    .tuner-string-target small {
        font-size: 0.55rem;
        line-height: 1.05;
        white-space: nowrap;
    }

    .tuner-meter {
        grid-area: meter;
        align-self: center;
        gap: 0.4rem;
        margin-bottom: 0;
    }

    .tuner-meter__note {
        font-size: clamp(2.5rem, 8vw, 3.5rem);
    }

    .tuner-meter__rail {
        margin: 0.25rem 0.65rem;
    }

    .tuner-tool__actions {
        grid-area: actions;
        align-self: center;
        justify-self: center;
    }
}

.metronome-tool {
    max-width: 42rem;
    margin: 0 auto;
}

.metronome-display {
    display: grid;
    gap: 1rem;
    margin-bottom: 1rem;
    text-align: center;
}

.metronome-display__tempo strong {
    display: block;
    color: var(--tool-ink);
    font-size: clamp(3rem, 14vw, 6rem);
    font-weight: 900;
    line-height: 1;
}

.metronome-display__tempo span {
    color: var(--tool-muted);
    font-weight: 900;
    letter-spacing: 0.08em;
}

.metronome-beats {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
}

.metronome-beats__dot {
    display: grid;
    place-items: center;
    width: 2.15rem;
    height: 2.15rem;
    border: 1px solid rgba(127, 33, 26, 0.28);
    border-radius: 999px;
    background: var(--bs-body-bg);
    color: var(--tool-muted);
    font-weight: 900;
}

.metronome-beats__dot small {
    font-size: 0.72rem;
    line-height: 1;
}

.metronome-beats__dot.is-primary {
    border-color: rgba(175, 57, 37, 0.5);
    background: rgba(175, 57, 37, 0.12);
}

.metronome-beats__dot.is-secondary {
    border-color: rgba(12, 93, 112, 0.44);
    background: rgba(12, 93, 112, 0.08);
}

.metronome-beats__dot.is-active {
    color: #fff;
    background: var(--app-logo-red, #AF3925);
    border-color: var(--app-logo-red, #AF3925);
    transform: scale(1.2);
}

.metronome-compas-note {
    color: var(--tool-muted);
    font-size: 0.88rem;
    font-weight: 800;
}

.metronome-controls {
    justify-content: center;
}

.metronome-controls label:first-child {
    flex: 1 1 18rem;
}

@media (orientation: landscape) and (max-height: 560px) and (min-width: 480px) {
    .metronome-tool {
        display: grid;
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
        grid-template-areas:
            "display controls"
            "display actions";
        align-items: center;
        column-gap: 0.8rem;
        row-gap: 0.5rem;
        max-width: none;
        margin: 0;
        padding: 0.65rem;
    }

    .metronome-display {
        grid-area: display;
        align-content: center;
        gap: 0.45rem;
        min-width: 0;
        margin: 0;
    }

    .metronome-display__tempo strong {
        font-size: clamp(2.6rem, 8vw, 4rem);
    }

    .metronome-beats {
        gap: 0.3rem;
    }

    .metronome-beats__dot {
        width: 1.8rem;
        height: 1.8rem;
    }

    .metronome-compas-note {
        font-size: 0.72rem;
        line-height: 1.2;
    }

    .metronome-controls {
        display: grid;
        grid-area: controls;
        grid-template-columns: minmax(0, 1fr);
        gap: 0.35rem;
        min-width: 0;
        margin: 0;
    }

    .metronome-controls label,
    .metronome-controls label:first-child {
        gap: 0.12rem;
        min-width: 0;
        font-size: 0.72rem;
    }

    .metronome-controls .form-select {
        padding: 0.25rem 1.6rem 0.25rem 0.45rem;
        font-size: 0.8rem;
    }

    .metronome-actions {
        display: grid !important;
        grid-area: actions;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.35rem !important;
        min-width: 0;
    }

    .metronome-actions .btn {
        min-width: 0;
        padding: 0.3rem 0.35rem;
        font-size: 0.72rem;
        white-space: nowrap;
    }

    .metronome-actions .btn i {
        margin-right: 0.15rem !important;
    }
}

[data-bs-theme="dark"] .music-tools {
    --tool-line: rgba(252, 243, 204, 0.18);
    --tool-ink: var(--app-logo-cream, #FCF3CC);
    --tool-muted: rgba(246, 243, 237, 0.72);
    --tool-surface: rgba(36, 31, 33, 0.86);
    --tool-panel: rgba(27, 31, 36, 0.82);
    --tool-panel-strong: rgba(17, 21, 27, 0.92);
    --tool-active-bg: rgba(252, 243, 204, 0.16);
    --tool-active-border: rgba(252, 243, 204, 0.34);
    --tool-active-solid: var(--app-logo-cream, #FCF3CC);
    --tool-active-solid-ink: #201719;
}

[data-bs-theme="dark"] .music-tools__tab,
[data-bs-theme="dark"] .music-tool-segment,
[data-bs-theme="dark"] .music-key-summary div,
[data-bs-theme="dark"] .music-degree-list span,
[data-bs-theme="dark"] .tool-chord-card,
[data-bs-theme="dark"] .tuning-option,
[data-bs-theme="dark"] .tuning-strings span,
[data-bs-theme="dark"] .tuner-string-target,
[data-bs-theme="dark"] .metronome-beats__dot,
[data-bs-theme="dark"] .circle-of-fifths__key {
    background: var(--tool-panel);
}

[data-bs-theme="dark"] .music-tools__tab.is-active,
[data-bs-theme="dark"] .music-tool-segment__button.is-active,
[data-bs-theme="dark"] .tuner-string-target.is-active,
[data-bs-theme="dark"] .metronome-beats__dot.is-active {
    color: var(--tool-active-solid-ink);
    background: var(--tool-active-solid);
    border-color: var(--tool-active-solid);
}

[data-bs-theme="dark"] .music-tools__tab.is-active {
    color: #fff;
    background: var(--app-logo-red, #AF3925);
    border-color: var(--app-logo-red, #AF3925);
}

[data-bs-theme="dark"] .music-tools__picker-panel {
    border-color: var(--tool-line);
    box-shadow: 0 0.8rem 2.2rem rgba(0, 0, 0, 0.42);
}

[data-bs-theme="dark"] .music-tools__picker-option:hover:not(.is-active) {
    background: rgba(252, 243, 204, 0.08);
}

[data-bs-theme="dark"] .tuner-string-target.is-active small {
    color: rgba(32, 23, 25, 0.72);
}

[data-bs-theme="dark"] .tuning-option.is-active {
    border-color: var(--tool-active-border);
    background: var(--tool-active-bg);
}

[data-bs-theme="dark"] .metronome-beats__dot.is-primary {
    color: rgba(252, 243, 204, 0.92);
    border-color: rgba(244, 208, 166, 0.42);
    background: rgba(244, 208, 166, 0.14);
}

[data-bs-theme="dark"] .metronome-beats__dot.is-secondary {
    color: rgba(197, 238, 246, 0.92);
    border-color: rgba(158, 231, 245, 0.34);
    background: rgba(158, 231, 245, 0.1);
}

[data-bs-theme="dark"] .metronome-beats__dot.is-primary.is-active,
[data-bs-theme="dark"] .metronome-beats__dot.is-secondary.is-active {
    color: var(--tool-active-solid-ink);
    border-color: var(--tool-active-solid);
    background: var(--tool-active-solid);
}

[data-bs-theme="dark"] .circle-of-fifths__relative-key {
    color: #c5eef6;
    background: var(--tool-panel);
}

[data-bs-theme="dark"] .circle-of-fifths {
    background: repeating-conic-gradient(
        from -105deg,
        rgba(252, 243, 204, 0.07) 0deg 29deg,
        rgba(197, 238, 246, 0.045) 30deg 59deg
    );
}

[data-bs-theme="dark"] .circle-of-fifths__degree {
    color: rgba(246, 243, 237, 0.74);
}

[data-bs-theme="dark"] .circle-of-fifths__key.is-active,
[data-bs-theme="dark"] .circle-of-fifths__relative-key.is-active {
    color: #fff;
    background: var(--app-logo-red, #AF3925);
    border-color: var(--app-logo-red, #AF3925);
}

[data-bs-theme="dark"] .circle-of-fifths__key.is-active .circle-of-fifths__degree,
[data-bs-theme="dark"] .circle-of-fifths__relative-key.is-active .circle-of-fifths__degree {
    color: rgba(255, 255, 255, 0.88);
}

[data-bs-theme="dark"] .tool-chord-diagram {
    --tool-chord-line: rgba(252, 243, 204, 0.24);
    --tool-chord-surface: #16181d;
}

[data-bs-theme="dark"] .tool-chord-card__family {
    border-color: rgba(252, 243, 204, 0.22);
}

[data-bs-theme="dark"] .fretboard__cell.is-active {
    color: var(--app-logo-cream, #FCF3CC);
    background: rgba(252, 243, 204, 0.12);
}

[data-bs-theme="dark"] .fretboard__cell.is-root {
    color: #201719;
    background: var(--app-logo-cream, #FCF3CC);
}

[data-bs-theme="dark"] .fretboard__string-label,
[data-bs-theme="dark"] .fretboard__frets-label {
    border-right-color: rgba(252, 243, 204, 0.16);
    background: var(--tool-panel-strong);
}

[data-bs-theme="dark"] .fretboard__cell {
    border-right-color: rgba(252, 243, 204, 0.2);
    border-bottom-color: rgba(252, 243, 204, 0.12);
    background: linear-gradient(90deg, rgba(252, 243, 204, 0.08), rgba(252, 243, 204, 0.03));
}

[data-bs-theme="dark"] .fretboard__cell.is-active {
    box-shadow: inset 0 0 0 1px rgba(252, 243, 204, 0.08);
    background: rgba(252, 243, 204, 0.18);
}

[data-bs-theme="dark"] .fretboard__frets span {
    color: rgba(252, 243, 204, 0.78);
}

[data-bs-theme="dark"] .tuning-detail__header i {
    color: var(--app-logo-cream, #FCF3CC);
}

[data-bs-theme="dark"] .chord-library__empty {
    background: var(--tool-panel);
}

@media (min-width: 992px) {
    .music-tool-grid--circle {
        grid-template-columns: minmax(20rem, 1fr) minmax(20rem, 1fr);
        grid-template-areas: "details wheel";
        gap: 1rem;
    }

    .music-tool-grid--scales {
        grid-template-columns: minmax(0, 1.1fr) minmax(18rem, 0.9fr);
    }

    .tunings-layout {
        grid-template-columns: minmax(16rem, 0.8fr) minmax(0, 1.2fr);
    }
}

@media (max-width: 575.98px) {
    .tuning-strings {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .tuner-tool {
        padding: 0.65rem;
    }

    .tuner-tool .music-tool-controls {
        gap: 0.45rem;
        margin-bottom: 0.65rem;
    }

    .tuner-tool .music-tool-controls label {
        flex: 1 1 0;
        min-width: 0;
        font-size: 0.72rem;
    }

    .tuner-tool .music-tool-controls .form-select {
        padding: 0.3rem 1.65rem 0.3rem 0.5rem;
        font-size: 0.82rem;
    }

    .tuner-target-panel {
        gap: 0.35rem;
        margin-bottom: 0.65rem;
    }

    .tuner-target-panel__label {
        font-size: 0.75rem;
    }

    .tuner-string-targets {
        gap: 0.25rem;
    }

    .tuner-string-target {
        align-content: center;
        justify-items: center;
        gap: 0;
        min-width: 0;
        min-height: 2.85rem;
        padding: 0.25rem 0.08rem;
        border-radius: 6px;
    }

    .tuner-string-target strong {
        font-size: 0.88rem;
        line-height: 1.1;
        white-space: nowrap;
    }

    .tuner-string-target small {
        font-size: 0.65rem;
        line-height: 1.1;
        white-space: nowrap;
    }

    .tuner-meter {
        gap: 0.4rem;
        margin-bottom: 0.65rem;
    }

    .tuner-meter__note {
        font-size: clamp(2.5rem, 12vw, 3.25rem);
    }

    .tuner-meter__rail {
        margin: 0.25rem 0.65rem;
    }
}

@media (max-width: 575.98px) and (orientation: portrait) {
    .tuner-tool {
        grid-template-columns: minmax(0, 1fr);
        grid-template-areas:
            "meter"
            "targets"
            "controls"
            "actions";
        gap: 0.9rem;
        padding: 0.75rem;
    }

    .tuner-meter {
        grid-template-areas:
            "note"
            "cents"
            "rail"
            "frequency";
        gap: 0.15rem;
        margin: 0;
        padding: 0.55rem 0.2rem 0.75rem;
        border-bottom: 1px solid var(--tool-line);
    }

    .tuner-meter__note {
        font-size: clamp(4.5rem, 22vw, 5.5rem);
        line-height: 0.95;
    }

    .tuner-meter__cents {
        color: var(--tool-ink);
        font-size: 1.05rem;
        line-height: 1.2;
    }

    .tuner-meter__rail {
        height: 0.75rem;
        margin: 0.85rem 0.6rem 0.55rem;
    }

    .tuner-meter__rail span {
        top: -0.4rem;
        bottom: -0.4rem;
        width: 3px;
        border-radius: 3px;
    }

    .tuner-meter__rail i {
        width: 1.1rem;
        height: 1.1rem;
        border: 2px solid var(--bs-body-bg);
        box-shadow: 0 0 0 1px var(--tool-ink);
    }

    .tuner-meter__freq {
        min-height: 1.1rem;
        font-size: 0.78rem;
        line-height: 1.1;
    }

    .tuner-target-panel {
        gap: 0.35rem;
        margin: 0;
    }

    .tuner-target-panel__label {
        display: none;
    }

    .tuner-string-targets {
        gap: 0.2rem;
    }

    .tuner-string-target {
        min-height: 2.7rem;
        padding: 0.2rem 0.02rem;
        border-radius: 0.55rem;
    }

    .tuner-string-target strong {
        font-size: 0.76rem;
    }

    .tuner-string-target small {
        font-size: 0.56rem;
    }

    .tuner-tool .music-tool-controls {
        gap: 0.45rem;
        margin: 0;
        padding-top: 0.7rem;
        border-top: 1px solid var(--tool-line);
    }

    .tuner-tool .music-tool-controls label {
        gap: 0.2rem;
        font-size: 0.65rem;
        letter-spacing: 0.035em;
        text-transform: uppercase;
    }

    .tuner-tool .music-tool-controls .form-select {
        min-height: 2.4rem;
        padding: 0.35rem 1.6rem 0.35rem 0.55rem;
        font-size: 0.8rem;
        letter-spacing: normal;
        text-transform: none;
    }

    .tuner-tool__actions {
        justify-self: center;
        width: 100%;
    }

    .tuner-tool__actions .btn {
        width: min(100%, 18rem);
        min-height: 2.75rem;
        font-weight: 700;
    }
}

@media (orientation: landscape) and (max-height: 560px) and (max-width: 991.98px) {
    .music-tool-grid--circle .music-tool-copy {
        min-width: 0;
        padding: 0.6rem;
    }

    .music-tool-grid--circle .music-tool-copy__header {
        margin-bottom: 0.3rem;
    }

    .music-tool-grid--circle .music-tool-copy > p {
        display: none;
    }

    .music-tool-grid--circle .music-key-summary {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 0.25rem;
        margin: 0.4rem 0;
    }

    .music-tool-grid--circle .music-key-summary div {
        min-width: 0;
        padding: 0.35rem;
    }

    .music-tool-grid--circle .music-key-summary span {
        font-size: 0.58rem;
    }

    .music-tool-grid--circle .music-key-summary strong {
        font-size: 0.76rem;
        overflow-wrap: anywhere;
    }

    .music-tool-grid--circle .music-degree-list {
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 0.3rem;
    }

    .music-tool-grid--circle .music-degree-list span {
        min-width: 0;
        padding: 0.35rem 0.2rem;
        font-size: 0.72rem;
        text-align: center;
    }

    .music-tool-grid--circle .music-degree-list strong {
        font-size: 0.65rem;
    }
}

@media (orientation: landscape) and (max-height: 560px) and (min-width: 760px) and (max-width: 991.98px) {
    .music-tool-grid--circle {
        grid-template-columns: minmax(20rem, 1fr) minmax(20rem, 1fr);
        grid-template-areas: "details wheel";
        align-items: start;
        gap: 0.75rem;
    }

    .music-tool-grid--circle .circle-of-fifths {
        width: min(100%, 21rem);
    }
}