.audio-player {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.wave-container {
    position: relative;
    height: 60px;
    background: #f9fafb;
}

.progress-bar {
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    outline: none;
    background: #e5e7eb;
    cursor: pointer;
}

.progress-bar::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #4f46e5;
    cursor: pointer;
}

.play-btn {
    transition: transform 0.2s ease;
}

.play-btn:hover {
    transform: scale(1.1);
}

input[type=range]:focus {
    outline: none;
}

/* 动画效果 */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.playing .audio-cover {
    animation: pulse 2s infinite;
}