body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
    background: #f5f5f7;
    display: flex;
}

/* Sidebar */
.sidebar {
    width: 260px;
    height: 100vh;
    background: #ffffff;
    border-right: 1px solid #e5e5e5;
    padding: 20px;
    box-sizing: border-box;
}

.logo {
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 20px;
}

.search {
    width: 100%;
    padding: 8px;
    border-radius: 10px;
    border: 1px solid #ddd;
    margin-bottom: 20px;
}

/* Section */
.section-title {
    font-size: 12px;
    color: #888;
    margin-top: 20px;
    margin-bottom: 10px;
}

/* Menu */
.menu-item {
    padding: 10px;
    border-radius: 10px;
    cursor: pointer;
    transition: 0.2s;
}

.menu-item:hover {
    background: #f0f4ff;
}

.menu-item.active {
    background: #e6f0ff;
    color: #007aff;
    font-weight: bold;
}

/* Content */
.content {
    flex: 1;
    padding: 30px;
}

.title {
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 20px;
}

/* Song */
.song {
    display: flex;
    justify-content: space-between;
    padding: 12px;
    border-radius: 10px;
    cursor: pointer;
    transition: 0.2s;
}

.song:hover {
    background: #ffffff;
    box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

.song-name {
    font-weight: 500;
}

.song-time {
    color: #888;
}

/* hover 藍色效果 */
.song:hover .song-name {
    color: #007aff;
}