/* 全局样式 - 后时尚视界 */

/* 重置与基础 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-weight: 400;
    font-size: 16px;
    line-height: 1.8;
    color: #333333;
    background-color: #FFFFFF;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 设计令牌 */
:root {
    --color-white: #FFFFFF;
    --color-black: #000000;
    --color-gray-50: #F5F5F5;
    --color-gray-100: #E5E5E5;
    --color-gray-500: #666666;
    --color-gray-700: #333333;
    
    --spacing-4: 16px;
    --spacing-6: 24px;
    --spacing-8: 32px;
    --spacing-12: 48px;
    --spacing-16: 64px;
    --spacing-24: 96px;
    
    --border-color: var(--color-gray-100);
    --text-secondary: var(--color-gray-500);
    --text-primary: var(--color-gray-700);
}

/* 排版 */
h1, h2, h3, h4, h5, h6 {
    font-weight: 300;
    line-height: 1.4;
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
}

h1 {
    font-size: clamp(28px, 4vw, 32px);
}

h2 {
    font-size: clamp(22px, 3vw, 24px);
}

h3 {
    font-size: clamp(18px, 2.5vw, 20px);
}

p {
    margin-bottom: var(--spacing-4);
}

a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.2s ease-in-out;
}

a:hover {
    color: var(--text-secondary);
}

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

/* 容器 */
.container {
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-8);
    }
}

@media (min-width: 1200px) {
    .container {
        padding: 0 var(--spacing-16);
    }
}

/* 导航栏 */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.nav-logo {
    font-size: 20px;
    font-weight: 400;
    color: var(--text-primary);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-8);
}

.nav-link {
    position: relative;
    font-size: 16px;
    padding: var(--spacing-4) 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-black);
    transition: width 0.2s ease-in-out;
}

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

.nav-link.active {
    color: var(--color-black);
}

/* 主内容区 */
main {
    padding-top: 80px;
    min-height: 100vh;
}

/* 英雄区域 */
.hero {
    position: relative;
    height: 80vh;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.2);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--color-white);
    padding: var(--spacing-6);
}

.hero-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 300;
    margin-bottom: var(--spacing-6);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* 卡片网格 */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-8);
    padding: var(--spacing-16) 0;
}

.card {
    background-color: var(--color-white);
    border-radius: 0;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
    cursor: pointer;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.card-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.card-content {
    padding: var(--spacing-6);
}

.card-title {
    font-size: 20px;
    margin-bottom: var(--spacing-2);
}

.card-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 图库网格 */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-6);
    padding: var(--spacing-12) 0;
}

.gallery-item {
    position: relative;
    aspect-ratio: 4/5;
    overflow: hidden;
    cursor: pointer;
}

.gallery-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease-in-out;
}

.gallery-item:hover .gallery-image {
    transform: scale(1.05);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-caption {
    color: var(--color-white);
    font-size: 14px;
    text-align: center;
    padding: var(--spacing-4);
}

/* 文章列表 */
.article-list {
    padding: var(--spacing-12) 0;
}

.article-item {
    margin-bottom: var(--spacing-12);
    padding-bottom: var(--spacing-12);
    border-bottom: 1px solid var(--border-color);
}

-article-item:last-child {
    border-bottom: none;
}

.article-header {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-8);
    align-items: start;
}

.article-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.article-content h2 {
    font-size: 24px;
    margin-bottom: var(--spacing-2);
}

.article-date {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-4);
}

.article-excerpt {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-primary);
}

/* 关于页面 */
.about-content {
    max-width: 700px;
    margin: 0 auto;
    padding: var(--spacing-16) 0;
    text-align: center;
}

.about-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    margin-bottom: var(--spacing-12);
}

/* 页脚 */
footer {
    text-align: center;
    padding: var(--spacing-12) 0;
    color: var(--text-secondary);
    font-size: 14px;
    border-top: 1px solid var(--border-color);
}

/* 分类筛选 */
.filter-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-8);
    padding: var(--spacing-6) 0;
}

.filter-tag {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: 14px;
    border: none;
    background: none;
    cursor: pointer;
    position: relative;
    color: var(--text-primary);
    transition: color 0.2s ease-in-out;
}

.filter-tag::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-black);
    transition: width 0.2s ease-in-out;
}

.filter-tag:hover::after,
.filter-tag.active::after {
    width: 100%;
}

.filter-tag.active {
    color: var(--color-black);
}

/* 响应式调整 */
@media (max-width: 767px) {
    .nav-list {
        gap: var(--spacing-4);
        font-size: 14px;
    }
    
    .hero {
        height: 60vh;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: var(--spacing-4);
    }
    
    .article-header {
        grid-template-columns: 1fr;
        gap: var(--spacing-4);
    }
    
    .filter-tags {
        justify-content: center;
    }
}

@media (min-width: 768px) and (max-width: 1199px) {
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    }
}

/* 实用类 */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }
.mb-12 { margin-bottom: var(--spacing-12); }

.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }
.mt-12 { margin-top: var(--spacing-12); }