/* 
 * 网站名称：风尚视界
 * 描述：全局样式定义
 * 核心技术：CSS3 Variables, Custom Animations, Tailwind Utilities Extension
 */

/* =========================================
   1. 基础设置与字体规范
   ========================================= */
:root {
    /* 色彩系统 - 与Tailwind配置保持一致 */
    --color-bg-primary: #FFFFFF;
    --color-bg-secondary: #F5F5F5;
    --color-text-primary: #2C2C2C;
    --color-accent-sand: #E8E3D9;
    
    /* 字体系统 */
    --font-primary: 'Helvetica Neue', 'Helvetica', 'Arial', 'PingFang SC', 'Hiragino Sans GB', 'Heiti SC', 'Microsoft YaHei', 'WenQuanYi Micro Hei', sans-serif;
    --font-heading: 'Source Han Sans CN', 'Noto Sans SC', var(--font-primary);
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    color: var(--color-text-primary);
    background-color: var(--color-bg-secondary);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 300; /* Light */
    letter-spacing: -0.02em;
}

/* =========================================
   2. 交互与动画
   ========================================= */

/* 淡入动画 - 用于页面加载和滚动出现 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
    animation: fadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }

/* 图片悬停效果增强 */
.visual-card {
    position: relative;
    overflow: hidden;
}

.visual-card img {
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), filter 0.6s ease;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.visual-card:hover img {
    transform: scale(1.03);
}

.visual-card .overlay {
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(2px);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.visual-card:hover .overlay {
    opacity: 1;
}

/* =========================================
   3. 布局辅助
   ========================================= */

/* 隐藏滚动条但保留功能 */
.scrollbar-hide::-webkit-scrollbar {
    display: none;
}
.scrollbar-hide {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

/* 渐进式图片加载 - 模糊占位 */
.blur-load {
    filter: blur(20px);
    transition: filter 0.5s ease-out;
}
.blur-load.loaded {
    filter: blur(0);
}

/* 导航栏背景模糊 */
.glass-nav {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

/* 灯箱样式微调 */
#lightbox {
    transition: opacity 0.3s ease;
    z-index: 9999;
}

/* 文本选择颜色 */
::selection {
    background: var(--color-accent-sand);
    color: var(--color-text-primary);
}

/* =========================================
   4. 内容槽位 (Dynamic Slots)
   ========================================= */
[data-slot="content"] {
    min-height: 100px;
    display: flex;
    flex-direction: column;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .container-padding {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }
}