/* 自定义样式 */
body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

.card {
    border: none;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    border-radius: 0.5rem;
}

.card-header {
    background-color: #fff;
    border-bottom: 1px solid #dee2e6;
    font-weight: 600;
}

.table th {
    border-top: none;
    font-weight: 600;
    color: #495057;
}

.table td {
    vertical-align: middle;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid #dee2e6;
}

.status-online {
    color: #28a745;
    font-weight: 600;
}

.status-offline {
    color: #dc3545;
    font-weight: 600;
}

.status-error {
    color: #ffc107;
    font-weight: 600;
}

.balance {
    font-weight: 600;
    color: #28a745;
}

.country-flag {
    width: 20px;
    height: 15px;
    margin-right: 5px;
    border-radius: 2px;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
}

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
}

.toast {
    min-width: 300px;
}

#connection-status {
    animation: pulse 2s infinite;
}

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

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-spinner {
    width: 3rem;
    height: 3rem;
    color: white;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container-fluid {
        padding: 0.5rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .table-responsive {
        font-size: 0.875rem;
    }
    
    .avatar {
        width: 30px;
        height: 30px;
    }
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

/* 状态指示器 */
.status-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 5px;
}

.status-indicator.online {
    background-color: #28a745;
}

.status-indicator.offline {
    background-color: #dc3545;
}

.status-indicator.error {
    background-color: #ffc107;
}

/* 工具提示样式 */
.tooltip-inner {
    background-color: #343a40;
    color: white;
    border-radius: 0.25rem;
}

/* 按钮悬停效果 */
.btn:hover {
    transform: translateY(-1px);
    transition: transform 0.2s ease;
}

/* 卡片悬停效果 */
.card:hover {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    transition: box-shadow 0.3s ease;
}

/* 登录状态控制 - 覆盖Bootstrap的d-flex类 */
#user-info.hidden {
    display: none !important;
}

#user-info.visible {
    display: flex !important;
}

#login-btn.hidden {
    display: none !important;
}

#login-btn.visible {
    display: inline-block !important;
}