.beat-container {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    gap: 8px;
    height: 60px;
}

.beat-bar {
    display: flex;
    flex-direction: column-reverse;
    gap: 4px;
    width: 24px;
}

.beat-block {
    width: 100%;
    height: 12px;
    background-color: #e9ecef;
    border-radius: 2px;
    transition: background-color 0.05s;
}

/* Active States */
.beat-bar.active .beat-block.filled {
    background-color: #0d6efd;
    box-shadow: 0 0 8px rgba(13, 110, 253, 0.5);
}

.beat-bar.sub-active .beat-block.filled {
    background-color: #6c757d;
}

/* Inactive but filled blocks (showing structure) */
.beat-block.filled {
    background-color: #dee2e6;
}

/* Empty blocks (invisible/placeholder) */
.beat-block.empty {
    background-color: transparent;
}

#bpm-slider {
    cursor: pointer;
}