/* Web工具箱 - 自定义样式 */

/* 全局样式 */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
}

/* 导航栏 */
.navbar-brand {
    font-weight: 600;
    font-size: 1.5rem;
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: rgba(255, 255, 255, 0.8) !important;
}

/* 页面标题 */
.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* 卡片样式 */
.card {
    border: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s ease;
}

.card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.card-header {
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
    font-weight: 600;
}

/* 按钮样式 */
.btn {
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

/* 表单控件 */
.form-control, .form-select {
    border-radius: 6px;
    border: 1px solid #e1e5e9;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

/* 工具分类卡片 */
.tool-category-card {
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    background: #fff;
    border: 1px solid #e9ecef;
}

.tool-category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-color: #667eea;
}

.tool-item {
    text-decoration: none;
    color: inherit;
    border-radius: 8px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.tool-item:hover {
    background: linear-gradient(135deg, #f8f9ff 0%, #f0f4ff 100%);
    border-color: #667eea;
    text-decoration: none;
    color: inherit;
    transform: translateX(5px);
}

/* 特性介绍 */
.feature-card {
    text-align: center;
    padding: 2rem;
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #f8f9ff 0%, #e8f2ff 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.feature-card:hover .feature-icon i {
    color: white !important;
}

/* 结果摘要卡片 */
.bg-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
}

.bg-success {
    background: linear-gradient(135deg, #56ab2f 0%, #a8e6cf 100%) !important;
}

.bg-warning {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%) !important;
}

.bg-danger {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%) !important;
}

/* 表格样式 */
.table {
    border-radius: 8px;
    overflow: hidden;
}

.table-dark {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(102, 126, 234, 0.05);
}

.table-hover tbody tr:hover {
    background-color: rgba(102, 126, 234, 0.1);
}

/* 图表容器 */
#compoundChart {
    max-height: 400px;
}

/* 预设按钮 */
.preset-btn {
    border-radius: 20px;
    font-size: 0.85rem;
    padding: 0.375rem 0.75rem;
    transition: all 0.3s ease;
}

.preset-btn:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: transparent;
    transform: translateY(-1px);
}

/* 响应式优化 */
@media (max-width: 768px) {
    .container {
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .hero-section {
        min-height: 300px;
        text-align: center;
    }
    
    .tool-category-card {
        margin-bottom: 1rem;
    }
}

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

.card, .tool-category-card {
    animation: fadeInUp 0.6s ease-out;
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
}

/* 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); }
}

/* 提示信息 */
.alert {
    border: none;
    border-radius: 8px;
    border-left: 4px solid;
}

.alert-info {
    background: linear-gradient(135deg, #e3f2fd 0%, #f0f8ff 100%);
    border-left-color: #2196f3;
}

/* 页脚 */
footer {
    margin-top: auto;
}