body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

header {
    background-color: #f4f4f4;
    padding: 1rem;
    text-align: center;
}

main {
    padding: 2rem;
}

#audio-list {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.audio-item {
    background-color: #f9f9f9;
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 5px;
    text-align: center;
}

.play-btn {
    background-color: #4CAF50;
    border: none;
    color: white;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    border-radius: 5px;
}

#waveform {
    margin-bottom: 1rem;
}

.controls {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.controls > * {
    margin-right: 1rem;
    margin-bottom: 0.5rem;
}

.hidden {
    display: none;
}