body {
    font-family: Arial, sans-serif;
    background-color: #f2f2f2;
}


.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

h1 {
    font-size: 24px;
    margin-bottom: 20px;
}

.file-list {
    list-style-type: none;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: flex-start;
}

.file-list li {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 220px;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background-color: #fff;
    transition: transform 0.2s, box-shadow 0.2s;
}

.file-list li:hover {
    background-color: #f9f9f9;
    transform: translateY(-5px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.title {
    font-size: 18px;
    font-weight: bold;
    margin: 10px 0;
    text-align: center;
    word-break: break-word;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.file-name {
    font-size: 18px;
    font-weight: bold;
    margin: 10px 0;
    text-align: center;
    word-break: break-word;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cover {
    margin-bottom: 10px;
}

.cover img {
    border-radius: 4px;
}

.file-id {
    margin-bottom: 10px;
}

.file-id img {
    border-radius: 4px;
    object-fit: cover;
}

.action {
    margin-top: auto;
}

.play-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: #007bff;
    color: #fff;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s;
}

.play-btn:hover {
    background-color: #ff0000;
}

.play-btn i {
    font-size: 20px;
}

.navigation-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #f0f0f0;
    padding: 10px;
}

.nav-item a {
    color: #333;
    text-decoration: none;
    padding: 5px 10px;
}

.nav-item a:hover {
    background-color: #ddd;
}