.mbr-audio-ui {
    display: flex;
    align-items: center;
    gap: 15px;
    background: #f9f9f9;
    padding: 15px 20px;
    margin-bottom: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.mbr-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    font-size: 16px;
    border: none;
    background-color: #0057b7;
    color: #fff;
    border-radius: 8px;
    cursor: pointer;
    transition: 0.3s;
}

.mbr-btn:hover {
    background-color: #003f8a;
}

.mbr-btn .icon {
    width: 24px;
    height: 24px;
}

.mbr-visualizer {
    height: 10px;
    flex-grow: 1;
    background: #ddd;
    border-radius: 5px;
    position: relative;
    overflow: hidden;
}

.mbr-visualizer::before {
    content: '';
    position: absolute;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, #0057b7 0%, #3399ff 50%, #0057b7 100%);
    animation: mbr-slide 2s linear infinite;
    opacity: 0;
}

.mbr-visualizer.active::before {
    opacity: 1;
}

@keyframes mbr-slide {
    from { left: -100%; }
    to { left: 100%; }
}