* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    width: 400px;
    max-height: 600px;
    overflow-y: auto;
}

#app {
    padding: 16px;
}

header {
    margin-bottom: 16px;
    text-align: center;
}

h1 {
    font-size: 20px;
    color: #333;
}

h2 {
    font-size: 16px;
    margin-bottom: 8px;
    padding-bottom: 4px;
    border-bottom: 1px solid #ddd;
}

.playlist {
    background: #fff;
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 16px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.video-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid #eee;
}

.video-item:last-child {
    border-bottom: none;
}

.video-title {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.video-actions {
    display: flex;
    gap: 8px;
}

button, a.play-btn {
    padding: 4px 8px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
}

.play-btn {
    background-color: #4285f4;
    color: white;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.remove-btn {
    background-color: #f44336;
    color: white;
}

button:hover, a.play-btn:hover {
    opacity: 0.9;
}

.empty-playlist {
    padding: 8px 0;
    color: #888;
    font-style: italic;
    font-size: 14px;
}

.current-video {
    background-color: #e3f2fd;
    border-left: 3px solid #4285f4;
    padding-left: 8px;
    font-weight: bold;
}

.done-video {
    color: #999;
    opacity: 0.6;
}

.done-video .video-title {
    text-decoration: line-through;
}