body {
    background-color: #333;
    color: white;
    font-family: Arial, sans-serif;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background-color: #444;
    padding: 20px;
    border-radius: 10px;
    width: 90%;
    max-width: 600px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

h1 {
    text-align: center;
    margin-bottom: 20px;
}

.headphones-note {
    text-align: center;
    font-size: 0.9em;
    margin-bottom: 20px;
    color: #bbb;
}

.input-group,
.slider-group,
.progress-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 5px;
}

input[type="file"] {
    background-color: #555;
    color: white;
    padding: 8px;
    border: 1px solid #666;
    border-radius: 5px;
    width: 100%;
    box-sizing: border-box;
}

input[type="range"] {
    width: 100%;
    accent-color: #888;
}

select {
    background-color: #555;
    color: white;
    padding: 8px;
    border: 1px solid #666;
    border-radius: 5px;
    width: 100%;
    box-sizing: border-box;
    cursor: pointer;
}

select:hover {
    background-color: #666;
}

select option {
    background-color: #555;
    color: white;
}

.button-group {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

button {
    background-color: #555;
    color: white;
    border: 1px solid #666;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
}

button:hover:not(:disabled) {
    background-color: #666;
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.progress-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

progress {
    width: 100%;
    height: 20px;
    border: 1px solid #666;
    border-radius: 5px;
    background-color: #555;
}

progress::-webkit-progress-bar {
    background-color: #555;
    border-radius: 5px;
}

progress::-webkit-progress-value {
    background-color: #4CAF50;
    border-radius: 5px;
}

progress::-moz-progress-bar {
    background-color: #4CAF50;
    border-radius: 5px;
}

#status {
    text-align: center;
    margin-bottom: 20px;
}

#download-link {
    display: block;
    text-align: center;
    color: #4CAF50;
    text-decoration: none;
}

#download-link:hover {
    text-decoration: underline;
}

#time-left {
    min-width: 100px;
    text-align: right;
    color: #bbb;
}