/* 全局样式 */
:root {
    --primary-color: #667eea;
    --primary-dark: #764ba2;
    --light-bg: #f8f9fa;
}

/* 页面标题通用样式 */
.page-title {
    padding: 40px 0;
    margin-bottom: 40px;
    color: white;
}

/* 卡片通用样式 */
.card-custom {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.08);
    border: 1px solid #f0f0f0;
    transition: transform 0.3s, box-shadow 0.3s;
}

.card-custom:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

/* 导航栏品牌 */
.navbar-brand {
    font-weight: 700;
    font-size: 1.3rem;
}

.navbar-brand i {
    color: #667eea;
}

/* 按钮统一风格 */
.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    padding: 10px 30px;
    border-radius: 8px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1rem;
    }
    .display-4 {
        font-size: 2rem;
    }
}