/**
 * HiTemp PC端主样式文件
 *
 * @package HiTemp
 * @since 1.0.0
 */

/* ===== CSS变量 ===== */
:root {
    /* 主色调 - 橙红色 */
    --primary-color: #ff5722;
    --primary-hover: #e64a19;
    --primary-light: #ff8a65;
    --primary-dark: #d84315;
    
    /* 辅助色 */
    --secondary-color: #ff9800;
    --secondary-hover: #f57c00;
    
    /* 强调色 */
    --accent-color: #ffab40;
    --accent-hover: #ff9100;
    
    /* 成功/警告/错误 */
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    /* 文字颜色 */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --text-inverse: #ffffff;
    
    /* 背景色 */
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #efefef;
    --bg-dark: #0f172a;
    
    /* 边框 */
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* 字体 */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    
    /* 字号 */
    --text-xs: 12px;
    --text-sm: 14px;
    --text-base: 16px;
    --text-lg: 18px;
    --text-xl: 20px;
    --text-2xl: 24px;
    --text-3xl: 30px;
    --text-4xl: 36px;
    
    /* 过渡 */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* 容器宽度 */
    --container-width: 1280px;
    --top-bar-height: 25px;
    --nav-height: 70px;
    --header-height: 95px; /* top-bar + nav */
}

/* ===== 全局重置 ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    line-height: 1.5;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--text-base);
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    min-height: 100vh;
}

body.pc-version {
    /* 不再需要padding-top，因为header不再是fixed定位 */
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-hover);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ===== 容器 ===== */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ===== 按钮样式 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease, color 0.15s ease, border-color 0.15s ease;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--wp--preset--color--luminous-vivid-amber), #d84315d9);
    color: var(--text-inverse);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-dark));
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
    color: var(--text-inverse);
}

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* ===== 头部样式 ===== */
/* 头部容器 - sticky固定在顶部 */
.site-header-wrapper {
    position: sticky;
    top: 0;
    z-index: 1000;
}

/* 顶部栏 - 随页面滚动 */
.top-bar {
    height: var(--top-bar-height);
    background: var(--bg-dark);
    color: var(--text-inverse);
    font-size: var(--text-xs);
}

.top-bar .container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.top-bar a {
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.top-bar a:hover {
    color: var(--text-inverse);
}

/* 顶部通知栏 */
.top-bar-notice {
    background: var(--primary-color);
    position: relative;
    overflow: hidden;
}

.top-bar-notice .container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.topbar-slider {
    position: relative;
    text-align: left;
    overflow: hidden;
    height: 25px;
    line-height: 25px;
    flex: 1;
}

.topbar-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease;
}

.topbar-slide.active {
    opacity: 1;
    visibility: visible;
}

.topbar-slide.prev {
    opacity: 0;
    visibility: hidden;
}

.topbar-link,
.topbar-text {
    color: #fff;
    font-size: 13px;
    font-weight: 500;
}

.topbar-link:hover {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: underline;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 12px;
}

.topbar-right a {
    color: rgba(255, 255, 255, 0.9);
}

.topbar-right a:hover {
    color: #fff;
}

.topbar-right .sep {
    color: rgba(255, 255, 255, 0.5);
}

/* 主导航 */
/* 主导航 */
.site-header {
    height: var(--nav-height);
    background: #fff;
    border-bottom: 1px solid var(--border-color);
}

.site-header .container {
    height: 100%;
}

.site-header .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.site-branding {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.site-branding a {
    display: flex;
    align-items: center;
}

.site-branding .site-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.site-branding .site-title:hover {
    color: var(--primary-color);
}

.site-branding img,
.site-branding .custom-logo {
    height: 42px;
    width: auto;
    max-width: 180px;
    display: block;
    object-fit: contain;
    transition: opacity 0.2s ease;
}

.site-branding .custom-logo-link {
    display: flex;
    align-items: center;
}

.site-branding .custom-logo-link:hover img,
.site-branding .custom-logo-link:hover .custom-logo {
    opacity: 0.85;
}

/* 导航菜单 */
.main-navigation {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-md);
    margin-left: auto;
}

.main-navigation ul {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-lg);
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-navigation a {
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    position: relative;
}

.main-navigation a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width var(--transition-normal);
}

.main-navigation a:hover {
    color: var(--primary-color);
}

.main-navigation a:hover::after {
    width: 100%;
}

/* 定制开发独立导航链接 */
.main-navigation a.nav-custom-dev {
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
    flex-shrink: 0;
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.main-navigation a.nav-custom-dev .nav-tag {
    position: absolute;
    top: -10px;
    right: -20px;
    background: var(--primary-color);
    color: #fff;
    font-size: 10px;
    font-style: normal;
    font-weight: 500;
    padding: 1px 5px;
    border-radius: 3px;
    line-height: 1.4;
}

.main-navigation a.nav-custom-dev .nav-tag::before {
    content: '';
    position: absolute;
    left: 4px;
    bottom: -4px;
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid var(--primary-color);
}

.main-navigation a.nav-custom-dev span {
    position: relative;
}

.main-navigation a.nav-custom-dev span::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width var(--transition-normal);
}

.main-navigation a.nav-custom-dev:hover {
    color: var(--primary-color);
}

.main-navigation a.nav-custom-dev:hover span::after {
    width: 100%;
}

/* 禁用 .nav-custom-dev 从 .main-navigation a 继承的下划线 */
.main-navigation a.nav-custom-dev::after {
    display: none;
}

/* 关于我们下拉菜单样式已移至独立文件: nav-about-dropdown.css */

/* 头部操作按钮 */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-left: 12px;
    position: relative;
}

.header-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: color 0.15s ease, background 0.15s ease;
    border: none;
    background: none;
    text-decoration: none;
    white-space: nowrap;
}

.header-btn .btn-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.login-btn {
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    background: transparent;
}

.login-btn:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background: var(--bg-tertiary);
}

.register-btn {
    background: #f66600;
    color: var(--text-inverse);
    padding: 8px 18px;
}

.register-btn:hover {
    background: var(--primary-hover);
    color: var(--text-inverse);
    transform: translateY(-1px);
}

/* 全站搜索功能 */
.header-search-form {
    display: flex;
    align-items: center;
    background: #fff;
    border-radius: var(--radius-md);
    border: 1px solid #ccc;
    overflow: hidden;
    height: 38px;
    transition: border-color 0.2s ease;
}

.header-search-form:hover,
.header-search-form.active {
    border-color: var(--primary-color);
}

.header-search-input {
    width: 0;
    border: none;
    outline: none;
    padding: 0;
    font-size: 14px;
    color: var(--text-primary);
    background: transparent;
    transition: width 0.3s ease, padding 0.3s ease;
}

.header-search-input::placeholder {
    color: #999;
}

.header-search-form.active .header-search-input {
    width: 280px;
    padding: 0 15px;
}

.header-search-form .header-search-btn {
    border: none;
    border-radius: 0;
}

.header-search-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: 1px solid #ccc;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: border-color 0.2s ease, color 0.2s ease;
    padding: 0;
    flex-shrink: 0;
    border-radius: var(--radius-md);
}

.header-search-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.header-search-btn svg {
    width: 18px;
    height: 18px;
}

/* 用户下拉菜单 */
.user-dropdown {
    position: relative;
}

.user-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: 1px solid var(--border-color);
    cursor: pointer;
    padding: 5px 10px;
    border-radius: var(--radius-md);
    width: 120px;
}

.user-dropdown-toggle:hover {
    background: var(--bg-tertiary);
}

.user-dropdown-toggle img {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    flex-shrink: 0;
}

.user-dropdown-toggle .user-name {
    flex: 1;
    font-weight: 500;
    font-size: 13px;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-dropdown-toggle .dropdown-arrow {
    font-size: 10px;
    color: var(--text-muted);
    transition: transform var(--transition-fast);
}

.user-dropdown.active .dropdown-arrow {
    transform: rotate(180deg);
}

.user-dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    width: 120px;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
    padding: var(--spacing-sm);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.15s ease, visibility 0.15s ease, transform 0.15s ease;
    z-index: 100;
}

.user-dropdown.active .user-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 8px 10px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: background 0.15s ease, color 0.15s ease;
    text-align: center;
    font-size: 13px;
    white-space: nowrap;
}

.dropdown-item:hover {
    background: var(--bg-tertiary);
    color: var(--primary-color);
}

.dropdown-item.logout-item:hover {
    color: var(--error-color);
}

.dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: var(--spacing-sm) 0;
}

/* ===== 主内容区 ===== */
.hitemp-main {
    min-height: calc(100vh - var(--header-height) - 200px);
    padding: 0px;
}

/* 英雄区域 */
.hero-section {
    text-align: center;
    padding: var(--spacing-2xl) 0;
    margin-bottom: var(--spacing-2xl);
    background: linear-gradient(135deg, #ff5722 0%, #ff9800 100%);
    border-radius: var(--radius-xl);
    color: var(--text-inverse);
}

.hero-title {
    font-size: var(--text-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: var(--text-lg);
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.hero-section .btn-primary {
    background: var(--bg-primary);
    color: var(--primary-color);
}

.hero-section .btn-primary:hover {
    background: var(--bg-tertiary);
}

.hero-section .btn-secondary {
    background: transparent;
    color: var(--text-inverse);
    border-color: rgba(255, 255, 255, 0.5);
}

.hero-section .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--text-inverse);
    color: var(--text-inverse);
}

/* 欢迎区域 */
.welcome-section {
    text-align: center;
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-xl);
}

.welcome-section h1 {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.welcome-section .tagline {
    font-size: var(--text-lg);
    color: var(--text-secondary);
}

/* 区块标题 */
.section-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    margin: var(--spacing-md) auto 0;
    border-radius: var(--radius-full);
}

/* 功能卡片区域 */
.features-section {
    padding: var(--spacing-2xl) 0;
    margin-bottom: var(--spacing-2xl);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.feature-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: var(--radius-lg);
    color: var(--text-inverse);
}

.feature-icon svg {
    width: 32px;
    height: 32px;
}

.feature-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.feature-desc {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 文章网格 */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.post-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    border: 1px solid var(--border-color);
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.post-thumbnail {
    position: relative;
    padding-top: 56.25%;
    overflow: hidden;
}

.post-thumbnail img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.post-card:hover .post-thumbnail img {
    transform: scale(1.05);
}

.post-content {
    padding: var(--spacing-lg);
}

.post-title {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.post-title a {
    color: var(--text-primary);
}

.post-title a:hover {
    color: var(--primary-color);
}

.post-excerpt {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--text-xs);
    color: var(--text-muted);
}

/* 无内容提示 */
.no-posts {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-secondary);
}

/* 分页 */
.navigation.pagination {
    margin-top: var(--spacing-xl);
    text-align: center;
}

.nav-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

.page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-md);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.page-numbers:hover,
.page-numbers.current {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--text-inverse);
}

/* ===== 底部样式 ===== */
.site-footer {
    background: var(--bg-dark);
    color: var(--text-inverse);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-main {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: var(--spacing-lg);
}

.footer-info .site-branding {
    margin-bottom: var(--spacing-md);
}

.footer-info .site-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-inverse);
}

.footer-info .site-description {
    color: var(--text-muted);
    max-width: 300px;
}

.footer-nav ul {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

.footer-nav a {
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.footer-nav a:hover {
    color: var(--text-inverse);
}

.footer-bottom {
    text-align: center;
}

.copyright {
    color: var(--text-muted);
    font-size: var(--text-sm);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .features-grid,
    .posts-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: var(--text-2xl);
    }
    
    .footer-main {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .footer-nav ul {
        flex-wrap: wrap;
    }
}