body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    background: #f0f2f5;
    color: #333;
    margin: 0;
}
main {
    max-width: 700px;
    margin: 2rem auto;
    padding: 2rem;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
h1 {
    text-align: center;
    color: #111;
}
.search-box {
    display: flex;
    gap: 10px;
    margin-bottom: 2rem;
}
#searchInput {
    flex-grow: 1;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1em;
}
#searchButton {
    padding: 12px 18px;
    border: none;
    background: #007bff;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
    transition: background-color 0.2s;
}
#searchButton:hover {
    background: #0056b3;
}
.track-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px;
    border-bottom: 1px solid #eee;
    transition: background-color 0.2s;
}
.track-item:hover {
    background-color: #f9f9f9;
}
.track-item:last-child {
    border-bottom: none;
}
.download-btn {
    padding: 6px 12px;
    font-size: 0.9em;
    border: none;
    background: #28a745;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
}
.download-btn:hover {
    background: #1e7e34;
}
.download-btn:disabled {
    background: #aaa;
    cursor: not-allowed;
}
#status {
    margin-top: 1.5rem;
    padding: 12px;
    background: #e9ecef;
    border-radius: 4px;
    text-align: center;
    color: #495057;
}