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

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    text-align: center;
    padding: 40px 20px;
    color: #fff;
}

.header h1 {
    font-size: 36px;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.header p {
    font-size: 16px;
    opacity: 0.9;
}

.main-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    padding: 30px;
    margin-bottom: 20px;
}

.nav-tabs {
    margin-bottom: 20px;
}

.form-section {
    margin-bottom: 20px;
}

.song-item {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 15px;
    border: 1px solid #e9ecef;
    position: relative;
}

.song-item:hover {
    border-color: #667eea;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.1);
}

.song-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px dashed #dee2e6;
}

.song-item-index {
    font-weight: bold;
    color: #667eea;
    font-size: 16px;
}

.btn-remove {
    cursor: pointer;
}

.media-type-switch {
    margin: 15px 0;
}

.status-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.status-1 {
    background: #fff3cd;
    color: #856404;
}

.status-2 {
    background: #cce5ff;
    color: #004085;
}

.status-3 {
    background: #d4edda;
    color: #155724;
}

.status-4 {
    background: #f8d7da;
    color: #721c24;
}

.alert-pause {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a5a 100%);
    color: #fff;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.alert-pause h3 {
    margin-bottom: 10px;
}

.alert-pause p {
    margin: 5px 0;
}

.stats-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border-radius: 12px;
    padding: 25px;
    text-align: center;
    transition: transform 0.3s ease;
}

.stats-card:hover {
    transform: translateY(-5px);
}

.stats-card .number {
    font-size: 36px;
    font-weight: bold;
    margin-bottom: 10px;
}

.stats-card .label {
    font-size: 14px;
    opacity: 0.9;
}

.admin-header {
    background: #fff;
    padding: 15px 30px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.admin-header h2 {
    color: #333;
    font-size: 20px;
}

.admin-content {
    padding: 20px;
}

.search-form {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.footer {
    text-align: center;
    padding: 20px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
}

@media (max-width: 768px) {
    .header h1 {
        font-size: 28px;
    }
    
    .main-card {
        padding: 20px;
    }
    
    .song-item {
        padding: 15px;
    }
}