/* 公共样式文件 - 包含全局通用样式 */

/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #374151;
    background-color: #F3F4F6;
}

/* 容器样式 */
.container {
    width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 链接样式 */
a {
    color: #1E3A8A;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #1E40AF;
    text-decoration: underline;
}

/* 按钮样式 */
.btn-primary {
    display: inline-block;
    padding: 10px 20px;
    background-color: #1E3A8A;
    color: #FFFFFF;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn-primary:hover {
    background-color: #1E40AF;
    text-decoration: none;
}

.btn-secondary {
    display: inline-block;
    padding: 10px 20px;
    background-color: #FFFFFF;
    color: #1E3A8A;
    border: 1px solid #1E3A8A;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background-color: #F3F4F6;
    text-decoration: none;
}

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    color: #111827;
    line-height: 1.2;
}

h1 {
    font-size: 32px;
}

h2 {
    font-size: 24px;
}

h3 {
    font-size: 20px;
}

h4 {
    font-size: 18px;
}

h5 {
    font-size: 16px;
}

h6 {
    font-size: 14px;
}

/* 面包屑导航样式 */
.breadcrumb {
    background-color: #F9FAFB;
    padding: 15px 0;
    border-bottom: 1px solid #E5E7EB;
}

.breadcrumb ol {
    display: flex;
    list-style: none;
    gap: 10px;
    align-items: center;
}

.breadcrumb li {
    display: flex;
    align-items: center;
}

.breadcrumb li:not(:last-child)::after {
    content: '>';
    margin-left: 10px;
    color: #9CA3AF;
}

.breadcrumb a {
    color: #1E3A8A;
    font-size: 14px;
}

.breadcrumb span {
    color: #6B7280;
    font-size: 14px;
}

/* 页面标题区域 */
.page-header {
    background-color: #FFFFFF;
    padding: 30px 0;
    border-bottom: 1px solid #E5E7EB;
    margin-bottom: 30px;
}

.page-header h1 {
    font-size: 28px;
    color: #1E3A8A;
    margin-bottom: 20px;
}

/* 筛选选项样式 */
.filter-options {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-group label {
    font-size: 14px;
    color: #374151;
    font-weight: 500;
}

.filter-select {
    padding: 8px 12px;
    border: 1px solid #E5E7EB;
    border-radius: 4px;
    font-size: 14px;
    background-color: #FFFFFF;
    cursor: pointer;
    transition: border-color 0.3s ease;
}

.filter-select:focus {
    outline: none;
    border-color: #1E3A8A;
}

/* 内容布局 */
.content-layout {
    display: flex;
    gap: 30px;
}

/* 侧边栏样式 */
.sidebar {
    width: 300px;
    flex-shrink: 0;
}

.sidebar-section {
    background-color: #FFFFFF;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.sidebar-section h3 {
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #1E3A8A;
    color: #1E3A8A;
    font-size: 16px;
}

.sidebar-section ul {
    list-style: none;
}

.sidebar-section li {
    margin-bottom: 12px;
}

.sidebar-section a {
    font-size: 14px;
    color: #374151;
    line-height: 1.4;
    display: block;
}

.sidebar-section a:hover {
    color: #1E3A8A;
}

/* 标签云样式 */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag-cloud .tag {
    padding: 5px 10px;
    background-color: #F3F4F6;
    color: #374151;
    font-size: 12px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.tag-cloud .tag:hover {
    background-color: #1E3A8A;
    color: #FFFFFF;
    text-decoration: none;
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 40px;
    padding: 20px 0;
}

.page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 12px;
    border: 1px solid #E5E7EB;
    border-radius: 4px;
    font-size: 14px;
    color: #374151;
    background-color: #FFFFFF;
    transition: all 0.3s ease;
}

.page-link:hover {
    background-color: #F3F4F6;
    border-color: #1E3A8A;
    color: #1E3A8A;
    text-decoration: none;
}

.page-link.active {
    background-color: #1E3A8A;
    border-color: #1E3A8A;
    color: #FFFFFF;
}

.page-link.prev,
.page-link.next {
    padding: 0 16px;
}

.page-ellipsis {
    color: #9CA3AF;
    font-size: 14px;
}

/* 顶部导航样式 */
.header {
    background-color: #FFFFFF;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
}

.logo h1 {
    font-size: 24px;
    font-weight: 700;
    color: #1E3A8A;
}

.logo a {
    text-decoration: none;
}

.main-nav ul {
    display: flex;
    gap: 30px;
    list-style: none;
}

.main-nav a {
    font-size: 16px;
    font-weight: 500;
    color: #374151;
    transition: color 0.3s ease;
}

.main-nav a:hover {
    color: #1E3A8A;
    text-decoration: none;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.search-box {
    display: flex;
    align-items: center;
}

.search-box input {
    padding: 8px 12px;
    border: 1px solid #E5E7EB;
    border-radius: 4px 0 0 4px;
    font-size: 14px;
    width: 200px;
}

.search-box button {
    padding: 8px 16px;
    background-color: #1E3A8A;
    color: #FFFFFF;
    border: none;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.search-box button:hover {
    background-color: #1E40AF;
}

.user-entry {
    display: flex;
    gap: 15px;
}

.login-btn,
.register-btn {
    padding: 8px 16px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.login-btn {
    background-color: #FFFFFF;
    color: #1E3A8A;
    border: 1px solid #1E3A8A;
}

.login-btn:hover {
    background-color: #F3F4F6;
    text-decoration: none;
}

.register-btn {
    background-color: #1E3A8A;
    color: #FFFFFF;
    border: 1px solid #1E3A8A;
}

.register-btn:hover {
    background-color: #1E40AF;
    text-decoration: none;
}

/* 底部样式 */
.footer {
    background-color: #111827;
    color: #FFFFFF;
    padding: 40px 0;
    margin-top: 60px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h3 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #FFFFFF;
}

.footer-section p {
    font-size: 14px;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 15px;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 10px;
}

.footer-section a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #FFFFFF;
    text-decoration: none;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    text-align: center;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

/* 响应式设计 */
@media (max-width: 1023px) {
    .container {
        width: 95%;
    }
    
    .content-layout {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767px) {
    .header-top {
        flex-direction: column;
        gap: 15px;
        padding: 15px 0;
    }
    
    .main-nav ul {
        gap: 15px;
    }
    
    .main-nav a {
        font-size: 14px;
    }
    
    .header-right {
        width: 100%;
        justify-content: center;
    }
    
    .search-box input {
        width: 150px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        grid-template-columns: 1fr;
    }
    
    .filter-options {
        flex-direction: column;
        gap: 15px;
    }
}

/* 搜索过渡动画层 */
.search-transition-layer {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(17, 24, 39, 0.24);
    backdrop-filter: blur(2px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.28s ease, visibility 0.28s ease;
    z-index: 9998;
}

.search-transition-layer.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.search-transition-panel {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    min-width: 220px;
    max-width: 86vw;
    padding: 12px 18px;
    border-radius: 12px;
    background: #ffffff;
    color: #111827;
    box-shadow: 0 10px 30px rgba(17, 24, 39, 0.18);
    transform: translateY(8px) scale(0.98);
    transition: transform 0.28s ease;
}

.search-transition-layer.active .search-transition-panel {
    transform: translateY(0) scale(1);
}

.search-transition-spinner {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 2px solid #dbe4f3;
    border-top-color: #1E3A8A;
    animation: search-spin 0.85s linear infinite;
}

.search-transition-text {
    font-size: 14px;
    font-weight: 600;
    color: #1f2937;
}

@keyframes search-spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}