.musical-key-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.5rem;
    padding: 0.125rem 0.5rem;
    border-radius: 0.25rem;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.8125rem;
    font-weight: 600;
    line-height: 1.25;
    letter-spacing: 0.02em;
    background-color: var(--musical-key-color, #2a2a2a);
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.2);
}

.musical-key-number,
.musical-key-letter,
.musical-key-standard {
    color: inherit;
}

.musical-key-letter {
    margin-left: 0.05em;
}