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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, '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;
}

/* 通用卡片样式 */
.card {
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    padding: 30px;
    margin-bottom: 20px;
}

.card-title {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #f0f0f0;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.btn-success {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, #eb3349 0%, #f45c43 100%);
    color: white;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #555;
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: #667eea;
}

.form-select {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    background: white;
}

/* 表格样式 */
.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.table th {
    background: #f8f9fa;
    font-weight: 600;
    color: #555;
}

.table tr:hover {
    background: #f8f9fa;
}

/* 状态标签 */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background: #d4edda;
    color: #155724;
}

.badge-warning {
    background: #fff3cd;
    color: #856404;
}

.badge-danger {
    background: #f8d7da;
    color: #721c24;
}

.badge-info {
    background: #d1ecf1;
    color: #0c5460;
}

/* 支付页面样式 */
.pay-container {
    max-width: 420px;
    margin: 40px auto;
    padding: 20px;
}

.pay-card {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

.pay-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 30px;
    text-align: center;
    color: white;
}

.pay-header h1 {
    font-size: 24px;
    margin-bottom: 5px;
}

.pay-body {
    padding: 30px;
}

.amount-display {
    text-align: center;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 12px;
    margin-bottom: 20px;
}

.amount-label {
    font-size: 14px;
    color: #666;
    margin-bottom: 5px;
}

.amount-value {
    font-size: 42px;
    font-weight: 700;
    color: #333;
}

.amount-value small {
    font-size: 20px;
    color: #999;
}

.qrcode-container {
    text-align: center;
    padding: 20px;
    background: white;
    border: 2px dashed #e0e0e0;
    border-radius: 12px;
    margin-bottom: 20px;
}

.qrcode-container img {
    max-width: 200px;
    height: auto;
}

.qrcode-tip {
    margin-top: 10px;
    font-size: 14px;
    color: #666;
}

.payment-type {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 15px;
}

.payment-type img {
    height: 30px;
}

.countdown {
    text-align: center;
    padding: 15px;
    background: #fff3cd;
    border-radius: 8px;
    color: #856404;
    margin-top: 20px;
}

/* 后台管理样式 */
.admin-header {
    background: white;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.admin-header h1 {
    color: #333;
}

.admin-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.stat-value {
    font-size: 36px;
    font-weight: 700;
    color: #667eea;
}

.stat-label {
    color: #666;
    margin-top: 5px;
}

.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.tab {
    padding: 12px 24px;
    background: #f0f0f0;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
}

.tab.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* 监控APP样式 */
.monitor-container {
    max-width: 420px;
    margin: 0 auto;
    min-height: 100vh;
    background: #f5f5f5;
}

.monitor-header {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    padding: 30px 20px;
    color: white;
    text-align: center;
}

.monitor-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 15px;
}

.status-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.status-dot.online {
    background: #fff;
}

.status-dot.offline {
    background: #ff4757;
    animation: none;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

.monitor-body {
    padding: 20px;
}

.monitor-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 15px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.monitor-card h3 {
    font-size: 16px;
    color: #333;
    margin-bottom: 15px;
}

.payment-log {
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    margin-bottom: 10px;
    border-left: 4px solid #11998e;
}

.payment-log .amount {
    font-size: 24px;
    font-weight: 700;
    color: #333;
}

.payment-log .time {
    font-size: 12px;
    color: #999;
    margin-top: 5px;
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: #999;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 16px;
    padding: 30px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #999;
}

/* 响应式 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .table {
        font-size: 14px;
    }
    
    .table th,
    .table td {
        padding: 8px 10px;
    }
    
    .admin-stats {
        grid-template-columns: 1fr 1fr;
    }
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 成功动画 */
.success-animation {
    text-align: center;
    padding: 40px;
}

.success-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    animation: scaleIn 0.5s ease;
}

.success-icon svg {
    width: 40px;
    height: 40px;
    fill: white;
}

@keyframes scaleIn {
    0% { transform: scale(0); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}