.instrument-btn {
    border: none;
    background: var(--rgba-0-0-0-0_35);
    line-height: 1;
    border-radius: 10px;
    width: 48px;
    height: 48px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 2px;
    cursor: pointer;
    color: var(--theme-text);
    border: 2px solid transparent;
}

.instrument-btn:hover {
    background: var(--rgba-0-0-0-0_55);
    transform: translateY(-1px);
}

.instrument-btn.active {
    background: var(--rgba-255-255-255-0_95);
    color: var(--theme-text);
    border-color: var(--theme-text);
}

.instrument-btn.active .instrument-label {
    color: var(--theme-text);
}

.instrument-btn:focus-visible {
    outline: none;
    border-color: var(--theme-text);
}

.instrument-btn.active:focus-visible {
    border-color: var(--theme-text);
}

.instrument-btn:hover .instrument-label {
    color: var(--theme-text);
}

.instrument-btn.active:hover .instrument-label {
    color: var(--theme-text);
}

.instrument-btn:hover,
.instrument-btn.active {
    transform: translateY(-1px);
}

.song-project-item {
    margin-bottom: 10px;
}

.song-project-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 12px;
    border: 1px solid transparent;
    cursor: pointer;
    margin-bottom: 6px;
}

.song-project-header:hover,
.song-project-header:focus-visible,
.song-project-header.active {
    transform: translateY(-1px);
}

.song-project-header:focus-visible {
    outline: 2px solid var(--rgba-255-255-255-0_85);
    outline-offset: 3px;
}

.song-project-header.active .song-status-indicator {
    background: var(--theme-surface-1);
    border-color: var(--theme-text);
    transform: scale(1.1);
}

.song-project-title {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.song-version-list {
    list-style: none;
    margin: 6px 0 0 24px;
    padding: 0 0 0 12px;
    border-left: 2px solid var(--rgba-255-255-255-0_15);
}

.song-version-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 7px;
    border-radius: 6px;
    border: 1px solid transparent;
    margin-bottom: 3px;
    background: var(--rgba-0-0-0-0_15);
    color: var(--theme-text);
    cursor: pointer;
}

.song-version-item:hover,
.song-version-item:focus-within,
.song-version-item.active {
    background: var(--rgba-255-255-255-0_9);
    color: var(--theme-text);
}

.song-version-select {
    flex: 1;
    display: inline-flex;
    align-items: center;
    color: inherit;
    font: inherit;
    text-align: left;
}

.song-version-item .song-status-indicator {
    margin-right: 6px;
    border-color: var(--rgba-255-255-255-0_45);
}

.song-version-item.active .song-status-indicator {
    background: var(--theme-surface-1);
    border-color: var(--theme-text);
    transform: scale(1.1);
}

.song-version-duplicate-btn {
    border: none;
    background: transparent;
    color: inherit;
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
    padding: 4px;
    border-radius: 6px;
    transition: background 0.2s ease, color 0.2s ease;
}

.song-version-duplicate-btn:hover,
.song-version-duplicate-btn:focus-visible {
    background: var(--rgba-0-0-0-0_12);
    color: var(--theme-text);
    outline: none;
}

.song-version-delete-btn {
    border: none;
    background: transparent;
    color: inherit;
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
    padding: 4px;
    border-radius: 6px;
    transition: background 0.2s ease, color 0.2s ease;
}

.song-version-delete-btn:hover,
.song-version-delete-btn:focus-visible {
    background: var(--rgba-176-0-32-0_12);
    color: var(--theme-text);
    outline: none;
}

.song-project-header:hover .song-close-btn,
.song-project-header:focus-within .song-close-btn,
.song-project-header.active .song-close-btn {
    opacity: 1;
}

.base-chord-control {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: bold;
    color: var(--theme-text);
    white-space: nowrap;
}

.base-chord-control select {
    padding: 6px 10px;
    border-radius: 6px;
    border: 1px solid var(--rgba-0-0-0-0_2);
    font-size: 16px;
    background: var(--rgba-255-255-255-0_85);
}

.guitar-guide {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.chord-group {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--rgba-0-0-0-0_08);
    scroll-margin-top: 80px;
}

.chord-group:first-of-type {
    border-top: none;
    padding-top: 0;
}

.chord-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

.chord-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 16px;
    border-radius: 12px;
    background: var(--rgba-255-255-255-0_9);
    border: 1px solid var(--rgba-0-0-0-0_08);
}

.chord-card header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.chord-card h4 {
    margin: 0;
    font-size: 20px;
    color: var(--theme-text);
    flex: 1 1 auto;
}

.chord-card-media { 
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.chord-card-media figure {
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: center;
}

.chord-card-media img {
    width: 160px;
    height: 200px;
    border-radius: 8px;
    border: 1px solid var(--rgba-0-0-0-0_12);
    background: var(--theme-surface-1);
    object-fit: contain;
}

.chord-card-media figcaption {
    font-size: 12px;
    color: var(--rgba-0-0-0-0_6);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.chord-diagram-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

.chord-diagram-btn {
    flex: 0 0 auto;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--rgba-26-35-126-0_35);
    background: var(--rgba-26-35-126-0_08);
    color: var(--theme-text);
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.chord-diagram-btn:hover,
.chord-diagram-btn:focus-visible {
    background: var(--theme-surface-1);
    color: var(--theme-text);
    border-color: var(--theme-text);
    transform: translateY(-1px);
    outline: none;
}

.chord-diagram-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
}

.chord-diagram-indicator {
    flex: 0 0 auto;
    font-size: 13px;
    font-weight: 600;
    color: var(--rgba-0-0-0-0_6);
}

.chord-card header audio {
    flex: 0 0 auto;
    width: 160px;
    min-width: 120px;
}

.guitar-chord-detail {
    gap: 20px;
}

.guitar-chord-detail-header {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 18px;
}

.guitar-chord-detail-title {
    font-size: 22px;
    line-height: 1.3;
}


.guitar-chord-layout {
    display: flex;
    flex-wrap: nowrap;
    align-items: stretch;
    gap: 24px;
    padding: 24px;
    border-radius: 16px;
    /*background: var(--theme-gradient);*/
    border: 1px solid var(--rgba-26-35-126-0_12);
}

.guitar-chord-diagram,
.guitar-chord-tablature {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.guitar-chord-diagram {
    flex: 1 1 0;
    align-items: center;
    justify-content: center;
}

.guitar-chord-tablature {
    flex: 0 0 auto;
    align-items: flex-start;
}

.guitar-chord-diagram figure {
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
    width: 100%;
    padding: 14px;
    border-radius: 12px;
    border: 1px solid var(--rgba-0-0-0-0_12);
    /*background: var(--theme-gradient);*/
}

.guitar-chord-diagram img {
    width: min(100%, 240px);
    height: auto;
    max-height: 320px;
    border-radius: 8px;
    border: 1px solid var(--rgba-0-0-0-0_12);
    background: var(--theme-surface-1);
    object-fit: contain;
}

.guitar-chord-tablature .chord-fingering-figure {
    width: auto;
    align-items: flex-start;
    align-self: flex-start;
    max-width: 100%;
}

.guitar-chord-tablature .chord-fingering {
    width: auto;
    width: fit-content;
    max-width: 100%;
    box-sizing: border-box;
}

.guitar-chord-variants {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
}

.guitar-chord-variants .chord-diagram-controls {
    justify-content: center;
    gap: 12px;
}

@media (max-width: 1024px) {
    .guitar-chord-layout {
        flex-wrap: wrap;
    }

    .guitar-chord-diagram,
    .guitar-chord-tablature {
        flex: 1 1 100%;
    }
}

.chord-tip-diagram {
    margin: 0 0 12px;
    padding: 8px 10px;
    background: var(--rgba-0-0-0-0_04);
    border-radius: 8px;
    font-size: 13px;
    font-family: 'Courier New', Courier, monospace;
    line-height: 1.4;
    color: var(--rgba-0-0-0-0_75);
}

.chord-tip-diagram:last-child {
    margin-bottom: 0;
}

.chord-popover__transpose {
    font-size: 0.78rem;
    color: var(--rgba-29-45-83-0_65);
    text-transform: none;
    letter-spacing: 0;
}

html.theme-claire .song-project-header {
    background: var(--claire-surface-strong);
    color: var(--claire-text);
    border-color: transparent;
}

html.theme-claire .song-project-header:hover,
html.theme-claire .song-project-header:focus-visible,
html.theme-claire .song-project-header.active {
    background: linear-gradient(135deg, var(--rgba-94-96-206-0_85), var(--rgba-100-223-223-0_9));
    color: var(--theme-text-inverse);
}

html.theme-claire .song-project-header:focus-visible {
    outline: 2px solid var(--rgba-94-96-206-0_48);
    outline-offset: 2px;
}

html.theme-claire .song-project-header.active .song-status-indicator {
    border-color: var(--rgba-255-255-255-0_75);
}

html.theme-claire .song-version-item {
    background: var(--claire-surface-strong);
    border-color: var(--claire-border-soft);
    color: var(--claire-text);
}

html.theme-claire .song-version-item:hover,
html.theme-claire .song-version-item:focus-within,
html.theme-claire .song-version-item.active {
    border-color: var(--rgba-94-96-206-0_32);
    transform: translateY(-2px);
}

html.theme-claire .instrument-btn {
    background: var(--claire-surface);
    border-color: var(--claire-border-soft);
    color: var(--claire-text);
}

html.theme-claire .instrument-btn:hover {
    background: linear-gradient(135deg, var(--rgba-94-96-206-0_12), var(--rgba-100-223-223-0_18));
}

html.theme-claire .instrument-btn.active {
    background: linear-gradient(135deg, var(--rgba-94-96-206-0_85), var(--rgba-100-223-223-0_82));
    color: var(--theme-text-inverse);
    border-color: transparent;
}

html.theme-sombre .song-project-header {
    background: var(--modern-surface-1);
    color: var(--modern-text);
    border-color: var(--modern-border);
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

html.theme-sombre .song-project-header:hover,
html.theme-sombre .song-project-header:focus-visible,
html.theme-sombre .song-project-header.active {
    background: linear-gradient(135deg, var(--modern-accent), var(--modern-accent-strong));
    color: var(--modern-text-inverse);
    border-color: transparent;
    box-shadow: 0 16px 28px var(--rgba-124-91-255-0_35);
}

html.theme-sombre .song-version-item {
    background: var(--modern-surface-1);
    border-color: var(--modern-border);
    color: var(--modern-text);
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

html.theme-sombre .song-version-item:hover,
html.theme-sombre .song-version-item:focus-within,
html.theme-sombre .song-version-item.active {
    background: linear-gradient(135deg, var(--modern-accent), var(--modern-accent-strong));
    border-color: transparent;
    color: var(--modern-text-inverse);
}

html.theme-sombre .instrument-btn {
    background: var(--modern-surface-1);
    border-color: transparent;
    color: var(--modern-text);
}

html.theme-sombre .instrument-btn:hover,
html.theme-sombre .instrument-btn:focus-visible {
    background: var(--modern-surface-2);
}

html.theme-sombre .instrument-btn.active {
    background: linear-gradient(135deg, var(--modern-accent), var(--modern-accent-strong));
    border-color: transparent;
    color: var(--modern-text-inverse);
    box-shadow: 0 12px 24px var(--rgba-124-91-255-0_35);
}

html.theme-sombre .chord-popover__transpose {
    color: var(--rgba-255-255-255-0_75);
}