/* =====================================================
   oilos 旅行日记 - 主样式文件
   作者：oilos
   版本：1.0
   描述：个人旅行生活网站样式，包含所有模块的响应式布局和动画效果
   ===================================================== */

/* ==================== CSS 变量定义 ==================== */
:root {
    /* 主色调 - 旅行风低饱和度色系 */
    --primary-color: #5B8C85;        /* 浅绿松石色 */
    --primary-light: #7BA39E;         /* 浅绿松石 */
    --secondary-color: #D4A574;       /* 暖杏色/沙漠色 */
    --secondary-light: #E8C9A0;      /* 浅暖杏 */
    --accent-color: #E07A5F;          /* 陶土红 */
    --accent-light: #F2A692;          /* 浅陶土 */
    
    /* 中性色 */
    --bg-primary: #FAF8F5;             /* 米白/奶白色 */
    --bg-secondary: #F5F1EB;          /* 浅木色 */
    --bg-card: #FFFFFF;               /* 卡片白 */
    --text-primary: #2D3436;          /* 深灰 */
    --text-secondary: #636E72;        /* 中灰 */
    --text-light: #95A5A6;            /* 浅灰 */
    --border-color: #E8E4DF;          /* 边框色 */
    
    /* 字体 */
    --font-body: 'Noto Sans SC', '微软雅黑', sans-serif;
    --font-title: 'Ma Shan Zheng', 'STKaiti', '楷体', serif;
    
    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    --shadow-hover: 0 12px 40px rgba(0,0,0,0.15);
    
    /* 动画 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 容器宽度 */
    --container-max: 1200px;
    --header-height: 70px;
}

/* 暗黑模式 */
[data-theme="dark"] {
    --bg-primary: #1A1A2E;
    --bg-secondary: #16213E;
    --bg-card: #1F2937;
    --text-primary: #E5E7EB;
    --text-secondary: #9CA3AF;
    --text-light: #6B7280;
    --border-color: #374151;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
}

/* ==================== 基础样式 ==================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.8;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

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

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    outline: none;
    background: none;
}

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

/* ==================== 加载动画 ==================== */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
}

.loader-icon {
    font-size: 48px;
    margin-bottom: 16px;
    animation: bounce 1s ease infinite;
}

.loader-text {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.loader-bar {
    width: 200px;
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    overflow: hidden;
    margin: 0 auto;
}

.loader-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    width: 0%;
    animation: loadProgress 2s ease forwards;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes loadProgress {
    0% { width: 0%; }
    100% { width: 100%; }
}

/* ==================== 回到顶部按钮 ==================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--accent-color);
    transform: translateY(-3px);
}

/* ==================== 暗黑模式切换 ==================== */
.theme-toggle {
    position: fixed;
    bottom: 30px;
    right: 100px;
    width: 50px;
    height: 50px;
    background: var(--bg-card);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    z-index: 1000;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.theme-toggle:hover {
    transform: scale(1.1);
}

.theme-icon {
    transition: transform var(--transition-normal);
}

/* ==================== 顶部导航栏 ==================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(250, 248, 245, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all var(--transition-normal);
    border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .site-header {
    background: rgba(26, 26, 46, 0.95);
}

.site-header.scrolled {
    box-shadow: var(--shadow-sm);
}

.header-container {
    max-width: var(--container-max);
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
}

.logo-icon {
    font-size: 28px;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.logo-text {
    font-family: var(--font-title);
    font-size: 28px;
    color: var(--primary-color);
    font-weight: bold;
}

.logo-sub {
    font-size: 14px;
    color: var(--text-secondary);
    padding-left: var(--spacing-sm);
    border-left: 2px solid var(--border-color);
}

.main-nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

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

.nav-link {
    position: relative;
    color: var(--text-primary);
    font-size: 15px;
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width var(--transition-normal);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* 搜索框 */
.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box input {
    width: 180px;
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    background: var(--bg-card);
    color: var(--text-primary);
    transition: all var(--transition-normal);
}

.search-box input:focus {
    width: 240px;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(91, 140, 133, 0.1);
}

.search-btn {
    position: absolute;
    right: 12px;
    font-size: 14px;
    color: var(--text-light);
    transition: color var(--transition-fast);
}

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

.search-suggestions {
    position: absolute;
    top: 100%;
    right: 0;
    width: 300px;
    max-height: 300px;
    overflow-y: auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: none;
    z-index: 100;
}

.search-suggestions.active {
    display: block;
}

.suggestion-item {
    padding: 12px 16px;
    cursor: pointer;
    transition: background var(--transition-fast);
    border-bottom: 1px solid var(--border-color);
}

.suggestion-item:last-child {
    border-bottom: none;
}

.suggestion-item:hover {
    background: var(--bg-secondary);
}

.suggestion-item .title {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.suggestion-item .location {
    font-size: 12px;
    color: var(--text-light);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    width: 30px;
    height: 30px;
    position: relative;
    z-index: 1001;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    position: absolute;
    left: 3px;
    transition: all var(--transition-normal);
}

.hamburger {
    top: 14px;
}

.hamburger::before {
    content: '';
    top: -8px;
}

.hamburger::after {
    content: '';
    top: 8px;
}

.mobile-menu-btn.active .hamburger {
    background: transparent;
}

.mobile-menu-btn.active .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.mobile-menu-btn.active .hamburger::after {
    transform: rotate(-45deg);
    top: 0;
}

/* ==================== Banner轮播 ==================== */
.banner-carousel {
    position: relative;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
    margin-top: var(--header-height);
}

.carousel-slides {
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
}

.carousel-slide.active {
    opacity: 1;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.7);
}

.carousel-content {
    position: absolute;
    bottom: 20%;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: white;
    max-width: 800px;
    padding: 0 var(--spacing-lg);
}

.carousel-quote {
    font-family: var(--font-title);
    font-size: 32px;
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    animation: fadeInUp 1s ease;
}

.carousel-location {
    font-size: 16px;
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.3s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.carousel-controls {
    position: absolute;
    bottom: 10%;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.carousel-btn {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    color: white;
    font-size: 16px;
    transition: all var(--transition-fast);
}

.carousel-btn:hover {
    background: rgba(255,255,255,0.4);
}

.carousel-dots {
    display: flex;
    gap: var(--spacing-sm);
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.carousel-dot.active {
    background: white;
    transform: scale(1.2);
}

.carousel-pause {
    position: absolute;
    top: calc(var(--header-height) + 20px);
    right: 20px;
    padding: 8px 16px;
    background: rgba(0,0,0,0.3);
    color: white;
    border-radius: var(--radius-md);
    font-size: 14px;
}

/* ==================== 通用区块样式 ==================== */
section {
    padding: var(--spacing-xxl) var(--spacing-lg);
    max-width: var(--container-max);
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-family: var(--font-title);
    font-size: 42px;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    margin-top: var(--spacing-md);
}

/* ==================== 近期旅行卡片 ==================== */
.recent-travels {
    padding: var(--spacing-xxl) var(--spacing-lg);
    max-width: var(--container-max);
    margin: 0 auto;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    margin-top: -60px;
    position: relative;
    z-index: 10;
}

.travel-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.travel-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.travel-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.travel-card-images {
    position: relative;
    height: 180px;
    overflow: hidden;
}

.travel-card-images img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.travel-card:hover .travel-card-images img {
    transform: scale(1.1);
}

.travel-card-thumbs {
    display: flex;
    position: absolute;
    bottom: 8px;
    left: 8px;
    gap: 4px;
}

.travel-card-thumb {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 2px solid white;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.travel-card-thumb:hover {
    opacity: 1;
}

.travel-card-content {
    padding: var(--spacing-md);
}

.travel-card-location {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.travel-card-time {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

.travel-card-highlight {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.travel-card-actions {
    display: flex;
    gap: var(--spacing-md);
}

.card-action {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--text-light);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.card-action:hover {
    color: var(--accent-color);
}

.card-action.active {
    color: var(--accent-color);
}

/* ==================== 旅行地图 ==================== */
.travel-map-section {
    padding: var(--spacing-xxl) var(--spacing-lg);
    max-width: var(--container-max);
    margin: 0 auto;
}

.map-container {
    position: relative;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.china-map {
    width: 100%;
    height: auto;
}

.china-map path {
    fill: var(--border-color);
    stroke: var(--bg-primary);
    stroke-width: 0.5;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.china-map path:hover {
    fill: var(--primary-light);
    filter: brightness(1.1);
}

.china-map path.visited {
    fill: var(--primary-color);
}

.china-map path.visited:hover {
    fill: var(--accent-color);
}

.map-tooltip {
    position: absolute;
    padding: 12px 16px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-fast);
    z-index: 100;
    max-width: 250px;
}

.map-tooltip.visible {
    opacity: 1;
}

.map-tooltip h4 {
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.map-tooltip p {
    font-size: 13px;
    color: var(--text-secondary);
}

.map-tooltip img {
    width: 100%;
    border-radius: var(--radius-sm);
    margin-top: 8px;
}

.map-legend {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 14px;
    color: var(--text-secondary);
}

.legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.legend-dot.visited {
    background: var(--primary-color);
}

.legend-dot.planned {
    background: var(--secondary-color);
}

/* ==================== 旅行日记模块 ==================== */
.diary-section {
    padding: var(--spacing-xxl) var(--spacing-lg);
    max-width: var(--container-max);
    margin: 0 auto;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
}

.diary-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.filter-btn {
    padding: 8px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    color: var(--text-secondary);
    font-size: 14px;
    transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.filter-select {
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    color: var(--text-primary);
    cursor: pointer;
}

/* 时间轴 */
.timeline-container {
    position: relative;
    padding-left: 40px;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
}

.timeline {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.timeline-item {
    position: relative;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.timeline-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -33px;
    top: 20px;
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    border-radius: 50%;
    border: 3px solid var(--bg-secondary);
}

.timeline-item .date {
    font-size: 12px;
    color: var(--text-light);
    margin-bottom: var(--spacing-xs);
}

.timeline-item .title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    transition: color var(--transition-fast);
}

.timeline-item:hover .title {
    color: var(--primary-color);
}

.timeline-item .location-tag {
    display: inline-block;
    padding: 2px 10px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.timeline-item .summary {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.timeline-item .diary-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.timeline-item .cover-image {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.timeline-item .views {
    font-size: 13px;
    color: var(--text-light);
}

/* 加载更多按钮 */
.load-more-container {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.load-more-btn {
    padding: 12px 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-radius: var(--radius-xl);
    font-size: 15px;
    font-weight: 500;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.load-more-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ==================== 旅行好物模块 ==================== */
.gear-section {
    padding: var(--spacing-xxl) var(--spacing-lg);
    max-width: var(--container-max);
    margin: 0 auto;
}

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

.gear-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.gear-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.gear-card-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.gear-card-content {
    padding: var(--spacing-md);
}

.gear-card-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.gear-card-usage {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

.gear-card-channel {
    font-size: 12px;
    color: var(--text-secondary);
    padding: 4px 8px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    display: inline-block;
}

.gear-card-experience {
    margin-top: var(--spacing-sm);
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ==================== 旅行感悟模块 ==================== */
.insights-section {
    padding: var(--spacing-xxl) var(--spacing-lg);
    max-width: var(--container-max);
    margin: 0 auto;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.insight-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.insight-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.insight-card-image {
    width: 100%;
    height: 160px;
    object-fit: cover;
}

.insight-card-content {
    padding: var(--spacing-md);
}

.insight-card-text {
    font-size: 15px;
    color: var(--text-primary);
    line-height: 1.8;
    font-style: italic;
}

.insight-card-author {
    margin-top: var(--spacing-md);
    font-size: 13px;
    color: var(--text-light);
    text-align: right;
}

/* ==================== 关于我模块 ==================== */
.about-section {
    padding: var(--spacing-xxl) var(--spacing-lg);
    max-width: var(--container-max);
    margin: 0 auto;
}

.about-content {
    display: flex;
    gap: var(--spacing-xl);
    align-items: flex-start;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

.about-avatar {
    flex-shrink: 0;
}

.about-avatar img {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--bg-secondary);
}

.about-info {
    flex: 1;
}

.about-info h3 {
    font-size: 24px;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-title);
}

.about-info p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: var(--spacing-md);
}

.about-contact {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
    font-size: 14px;
    color: var(--text-secondary);
}

/* ==================== 留言互动模块 ==================== */
.message-section {
    padding: var(--spacing-xxl) var(--spacing-lg);
    max-width: var(--container-max);
    margin: 0 auto;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
}

.message-form {
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    background: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    outline: none;
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.submit-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 500;
    transition: all var(--transition-normal);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.messages-list {
    max-width: 800px;
    margin: 0 auto;
}

.message-item {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    display: flex;
    gap: var(--spacing-md);
}

.message-avatar {
    flex-shrink: 0;
}

.message-avatar img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.message-content {
    flex: 1;
}

.message-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.message-nickname {
    font-weight: 600;
    color: var(--text-primary);
}

.message-time {
    font-size: 12px;
    color: var(--text-light);
}

.message-text {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
}

.message-actions {
    display: flex;
    gap: var(--spacing-md);
}

.message-action {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--text-light);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.message-action:hover {
    color: var(--accent-color);
}

/* ==================== 底部区域 ==================== */
.site-footer {
    background: var(--text-primary);
    color: white;
    padding: var(--spacing-xxl) var(--spacing-lg) var(--spacing-md);
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: var(--spacing-xl);
}

.footer-left h4,
.footer-center h4 {
    font-size: 18px;
    margin-bottom: var(--spacing-md);
    color: white;
}

.footer-about p {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    font-size: 14px;
    color: rgba(255,255,255,0.7);
}

.friend-links {
    list-style: none;
}

.friend-links li {
    margin-bottom: var(--spacing-sm);
}

.friend-links a {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
    transition: color var(--transition-fast);
}

.friend-links a:hover {
    color: var(--secondary-color);
}

.icp-info {
    text-align: right;
}

.icp-info a {
    color: rgba(255,255,255,0.9);
    font-size: 14px;
    padding: 8px 16px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-md);
    display: inline-block;
    transition: all var(--transition-fast);
}

.icp-info a:hover {
    background: rgba(255,255,255,0.2);
    color: white;
}

.footer-bottom {
    max-width: var(--container-max);
    margin: var(--spacing-xl) auto 0;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.5);
}

/* ==================== 底部固定备案信息 ==================== */
.fixed-icp {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: var(--text-primary);
    padding: 8px 0;
    text-align: center;
    z-index: 999;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
}

.fixed-icp a {
    color: rgba(255,255,255,0.8);
    font-size: 13px;
    transition: color var(--transition-fast);
}

.fixed-icp a:hover {
    color: white;
    text-decoration: underline;
}

/* 调整底部按钮位置，避免重叠 */
.back-to-top {
    bottom: 60px;
}

.theme-toggle {
    bottom: 60px;
}

/* ==================== 搜索结果弹窗 ==================== */
.search-results-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    padding-top: 100px;
}

.search-results-overlay.active {
    opacity: 1;
    visibility: visible;
}

.search-results-modal {
    width: 90%;
    max-width: 600px;
    max-height: 70vh;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transform: translateY(-20px);
    transition: transform var(--transition-normal);
}

.search-results-overlay.active .search-results-modal {
    transform: translateY(0);
}

.search-results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.search-results-header h3 {
    font-size: 18px;
    color: var(--text-primary);
}

.close-search {
    font-size: 28px;
    color: var(--text-light);
    transition: color var(--transition-fast);
}

.close-search:hover {
    color: var(--text-primary);
}

.search-results-list {
    max-height: calc(70vh - 60px);
    overflow-y: auto;
}

.search-result-item {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.search-result-item:hover {
    background: var(--bg-secondary);
}

.search-result-item .title {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.search-result-item .info {
    font-size: 13px;
    color: var(--text-light);
}

/* ==================== 响应式设计 ==================== */

/* 平板端 (1024px - 1366px) */
@media (max-width: 1366px) {
    .travel-cards {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .gear-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .insights-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 平板端 (768px - 1024px) */
@media (max-width: 1024px) {
    .header-container {
        padding: 0 var(--spacing-md);
    }
    
    .nav-list {
        gap: var(--spacing-lg);
    }
    
    .logo-sub {
        display: none;
    }
    
    .search-box input {
        width: 150px;
    }
    
    .search-box input:focus {
        width: 180px;
    }
    
    .travel-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .gear-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .insights-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-container {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer-right {
        grid-column: span 2;
        text-align: center;
    }
    
    .icp-info {
        text-align: center;
    }
}

/* 移动端 (375px - 768px) */
@media (max-width: 768px) {
    :root {
        --header-height: 60px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    /* 移动端导航 */
    .mobile-menu-btn {
        display: block;
    }
    
    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background: var(--bg-primary);
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
        flex-direction: column;
        justify-content: flex-start;
        padding-top: var(--spacing-xl);
    }
    
    .main-nav.active {
        transform: translateX(0);
    }
    
    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-lg);
    }
    
    .nav-link {
        font-size: 18px;
    }
    
    .search-box {
        display: none;
    }
    
    /* Banner */
    .banner-carousel {
        height: 60vh;
        min-height: 400px;
    }
    
    .carousel-quote {
        font-size: 22px;
    }
    
    /* 近期旅行 */
    .travel-cards {
        grid-template-columns: 1fr;
    }
    
    .recent-travels {
        margin-top: 0;
        border-radius: var(--radius-lg);
    }
    
    /* 地图 */
    .map-container {
        padding: var(--spacing-md);
    }
    
    /* 日记 */
    .diary-filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .timeline-container {
        padding-left: 30px;
    }
    
    .timeline-container::before {
        left: 10px;
    }
    
    .timeline-item::before {
        left: -26px;
    }
    
    /* 好物 */
    .gear-grid {
        grid-template-columns: 1fr;
    }
    
    /* 感悟 */
    .insights-grid {
        grid-template-columns: 1fr;
    }
    
    /* 关于我 */
    .about-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .about-avatar img {
        width: 150px;
        height: 150px;
    }
    
    .about-contact {
        flex-direction: column;
        align-items: center;
    }
    
    /* 底部 */
    .footer-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-right {
        grid-column: span 1;
    }
    
    /* 底部固定备案信息 */
    .fixed-icp a {
        color: rgba(255,255,255,0.8);
        font-size: 12px;
    }
    
    .back-to-top,
    .theme-toggle {
        bottom: 50px;
    }
}
    
    .theme-toggle {
        right: 80px;
    }
    
    .back-to-top {
        right: 20px;
    }
}

/* 小屏移动端 (小于375px) */
@media (max-width: 375px) {
    .section-title {
        font-size: 28px;
    }
    
    .carousel-quote {
        font-size: 18px;
    }
    
    .travel-card-images {
        height: 150px;
    }
    
    .gear-card-image {
        height: 150px;
    }
    
    .insight-card-image {
        height: 120px;
    }
}

/* ==================== 打印样式 ==================== */
@media print {
    .page-loader,
    .back-to-top,
    .theme-toggle,
    .mobile-menu-btn,
    .carousel-controls,
    .carousel-pause,
    .search-box {
        display: none !important;
    }
    
    .site-header {
        position: static;
    }
    
    .banner-carousel {
        margin-top: 0;
    }
}