/* VoiceVote 分贝挑战系统 - 公共样式 */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

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

.header {
    text-align: center;
    color: white;
    margin-bottom: 40px;
}

.header h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.btn {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    margin: 5px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-danger {
    background: linear-gradient(45deg, #ff6b6b, #ee5a24);
}

.btn-success {
    background: linear-gradient(45deg, #51cf66, #40c057);
}

.btn-warning {
    background: linear-gradient(45deg, #ffd43b, #fab005);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #555;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.status {
    margin-top: 15px;
    padding: 15px;
    border-radius: 8px;
    font-weight: bold;
    text-align: center;
}

.status.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.status.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.status.warning {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

.status.info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

.decibel-display {
    text-align: center;
    padding: 40px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border-radius: 15px;
    margin: 20px 0;
}

.decibel-value {
    font-size: 4rem;
    font-weight: bold;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.decibel-label {
    font-size: 1.2rem;
    opacity: 0.9;
}

.group-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.group-card {
    background: white;
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.group-card:hover {
    transform: translateY(-3px);
}

.group-name {
    font-size: 1.5rem;
    font-weight: bold;
    color: #667eea;
    margin-bottom: 10px;
}

.group-score {
    font-size: 2rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 5px;
}

.group-count {
    font-size: 0.9rem;
    color: #666;
}

.song-list {
    display: grid;
    gap: 15px;
    margin: 20px 0;
}

.song-item {
    background: white;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: transform 0.3s ease;
}

.song-item:hover {
    transform: translateY(-2px);
}

.song-info h3 {
    color: #333;
    margin-bottom: 5px;
}

.song-info p {
    color: #666;
    font-size: 0.9rem;
}

.song-status {
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
    text-transform: uppercase;
}

.song-status.idle {
    background: #e9ecef;
    color: #6c757d;
}

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

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

.song-status.published {
    background: #d1ecf1;
    color: #0c5460;
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.connection-status {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 10px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: bold;
    z-index: 1000;
}

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

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

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

.footer {
    text-align: center;
    color: white;
    margin-top: 40px;
    opacity: 0.8;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .card {
        padding: 20px;
    }
    
    .decibel-value {
        font-size: 3rem;
    }
    
    .group-stats {
        grid-template-columns: 1fr;
    }
    
    .song-item {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
}

/* 动画效果 */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}