body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f4f7f6;
    color: #333;
    line-height: 1.6;
    margin: 0;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}
header nav {
    background-color: #333;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
}
header nav a {
    color: white;
    text-decoration: none;
    padding: 10px 15px;
    font-weight: bold;
}
header nav a:hover {
    background-color: #555;
    border-radius: 3px;
}
main {
    background-color: #fff;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}
th, td {
    padding: 12px;
    border: 1px solid #ddd;
    text-align: left;
    word-break: break-word;
}
th {
    background-color: #f2f2f2;
    font-weight: bold;
}
tr:nth-child(even) {
    background-color: #f9f9f9;
}
a {
    color: #007bff;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}
.button, button {
    display: inline-block;
    background-color: #007bff;
    color: #fff;
    padding: 10px 15px;
    border: none;
    border-radius: 5px;
    text-decoration: none;
    cursor: pointer;
    font-size: 1em;
}
button:hover, .button:hover {
    background-color: #0056b3;
}
form div {
    margin-bottom: 20px;
}
form label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}
form input[type="text"],
form input[type="url"],
form select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
    max-width: 500px;
}
.player-container, .filter-controls {
    background: #f0f0f0;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 15px;
}
.player-container audio {
    max-width: 400px;
}
.message { padding: 10px; margin-bottom: 15px; border-radius: 5px; }
.success { background-color: #d4edda; color: #155724; }
.error { background-color: #f8d7da; color: #721c24; }
footer {
    text-align: center;
    margin-top: 30px;
    color: #777;
}