/* 自定义样式 */
body {
    font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 导航栏样式 */
.mobile-menu {
    transition: all 0.3s ease-in-out;
}

/* 按钮悬停效果 */
.btn-hover {
    transition: all 0.3s ease;
}

.btn-hover:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* 卡片悬停效果 */
.card-hover {
    transition: all 0.3s ease;
}

.card-hover:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

/* 渐变背景 */
.gradient-bg {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* 响应式图片 */
.responsive-img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* 表单样式 */
.form-input {
    transition: all 0.3s ease;
}

.form-input:focus {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.15);
}

/* 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);
    }
}

/* 文字渐变效果 */
.text-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 阴影效果 */
.shadow-custom {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.shadow-custom-lg {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* 边框渐变 */
.border-gradient {
    border: 2px solid;
    border-image: linear-gradient(135deg, #667eea 0%, #764ba2 100%) 1;
}

/* 自定义按钮样式 */
.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

/* 导航链接活跃状态 */
.nav-link-active {
    color: #3b82f6;
    font-weight: 600;
    position: relative;
}

.nav-link-active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 1px;
}

/* 卡片样式 */
.card {
    background: white;
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* 图标样式 */
.icon-wrapper {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

/* 分割线样式 */
.divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, #e5e7eb, transparent);
    margin: 32px 0;
}

/* 标签样式 */
.tag {
    display: inline-block;
    padding: 4px 12px;
    background: #f3f4f6;
    color: #374151;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

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

/* 进度条样式 */
.progress-bar {
    width: 100%;
    height: 8px;
    background: #e5e7eb;
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 4px;
    transition: width 0.3s ease;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .mobile-hidden {
        display: none;
    }
    
    .mobile-full {
        width: 100%;
    }
    
    .mobile-text-center {
        text-align: center;
    }
    
    .mobile-p-4 {
        padding: 16px;
    }
}

/* 打印样式 */
@media print {
    .no-print {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    .page-break {
        page-break-before: always;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    .dark-mode-bg {
        background-color: #1f2937;
        color: #f9fafb;
    }
    
    .dark-mode-card {
        background-color: #374151;
        color: #f9fafb;
    }
}

/* 无障碍设计 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 焦点样式 */
.focus-visible:focus {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
}

/* 选择文本样式 */
::selection {
    background: rgba(102, 126, 234, 0.2);
    color: #1f2937;
}

::-moz-selection {
    background: rgba(102, 126, 234, 0.2);
    color: #1f2937;
}