/* 自定义样式 */
body {
    font-family: 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
}

.card-shadow {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s ease;
}

.card-shadow:hover {
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.4rem;
}

.btn {
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-1px);
}

.article-content {
    line-height: 1.8;
    font-size: 1.05rem;
}

.article-content p {
    margin-bottom: 1.2rem;
}

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

.badge {
    font-size: 0.85em;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    font-weight: bold;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .display-4 {
        font-size: 2rem;
    }
    
    .btn-group .btn {
        font-size: 0.8rem;
    }
    
    .table-responsive {
        font-size: 0.9rem;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    animation: fadeIn 0.5s ease-out;
}

/* 表单样式优化 */
.form-control:focus {
    border-color: #007bff;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.form-select:focus {
    border-color: #007bff;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 成功/错误消息样式 */
.alert {
    border: none;
    border-radius: 8px;
}

.alert-success {
    background-color: #d1edff;
    color: #0c5460;
}

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

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