/* 设计系统 - 面试专用专业配色 */
:root {
    --color-bg: #FAFAFA;
    --color-card: #FFFFFF;
    --color-text: #1A1A1A;
    --color-text-secondary: #666666;
    --color-text-muted: #999999;
    --color-border: #E5E5E5;
    --color-accent: #0052FF; /* 专业蓝色，沉稳可信 */
    --color-hover: #0039CB;
    --color-hover-light: #F0F5FF;
    
    --font-family: 'Noto Sans SC', 'Inter', system-ui, sans-serif;
    
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    
    --transition: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --radius-sm: 4px;
    --radius-md: 8px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
     -webkit-touch-callout: none;
}

/* 排版规范 - 面试专用清晰层级 */
h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: clamp(32px, 5vw, 48px); font-weight: 700; }
h2 { font-size: clamp(24px, 4vw, 32px); }
h3 { font-size: clamp(18px, 3vw, 24px); }
h4 { font-size: 18px; font-weight: 500; }

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
    max-width: 65ch;
}

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

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

/* 全局图片保护 - 基础样式 */
img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-sm);
    /* 禁止图片选择/拖拽/右键 */
    -webkit-user-select: none; /* Chrome/Safari */
    -moz-user-select: none; /* Firefox */
    -ms-user-select: none; /* IE/Edge */
    user-select: none; /* 标准 */
    pointer-events: none; /* 禁止鼠标点击/右键菜单 */
    -webkit-user-drag: none; /* 禁止拖拽图片 */
    -khtml-user-drag: none; /* 早期KHTML浏览器 */
    -moz-user-drag: none; /* Firefox 旧版本 */
    -o-user-drag: none; /* Opera 旧版本 */
    /* 额外禁止保存图片的样式 */
    -webkit-touch-callout: none; /* 移动端禁止长按保存 */
}

/* 模态框内图片强化保护（作品展开后） */
.modal img,
.project-image img,
.work-card-image img {
    /* 继承基础保护并强化 */
    pointer-events: none !important;
    user-select: none !important;
    -webkit-user-drag: none !important;
    -webkit-touch-callout: none !important;
    /* 额外层保护：覆盖点击区域 */
    position: relative;
}

/* 为图片容器添加伪元素层，彻底阻断右键/点击 */
.work-card-image,
.project-image {
    position: relative;
}
.work-card-image::after,
.project-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: auto; /* 伪元素接收所有点击事件 */
    background: transparent; /* 透明不影响视觉 */
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 15px;
    transition: all var(--transition);
    cursor: pointer;
    border: none;
    gap: var(--spacing-sm);
}

.btn-primary {
    background-color: var(--color-accent);
    color: white;
}

.btn-primary:hover {
    background-color: var(--color-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-outline:hover {
    background-color: var(--color-hover-light);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* 导航栏 - 固定顶部，面试时方便跳转 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(250, 250, 250, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md) 0;
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text);
}

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

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

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

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

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.hamburger span {
    width: 20px;
    height: 2px;
    background-color: var(--color-text);
    transition: all var(--transition);
}

/* 移动端导航 */
.mobile-nav {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-lg);
    display: none;
    flex-direction: column;
    gap: var(--spacing-lg);
    z-index: 999;
}

.mobile-nav.active {
    display: flex;
}

.mobile-nav-link {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-text);
}

/* 首页英雄区 - 面试第一眼印象 */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: 80px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-text h1 {
    margin-bottom: var(--spacing-sm);
}

.hero-title-tag {
    font-size: 18px;
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 14px;
    color: var(--color-text-muted);
}

.hero-image {
    border-radius: 180px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    /* 英雄区图片容器也添加伪元素保护 */
    position: relative;
}
.hero-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: auto;
    background: transparent;
}

/* 作品展示区 - 面试核心 */
.works-section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-subtitle {
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.works-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.work-card {
    background-color: var(--color-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    cursor: pointer;
}

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

.work-card-image {
    aspect-ratio: 16/10;
    overflow: hidden;
}

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

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

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

.work-category {
    display: inline-block;
    background-color: var(--color-hover-light);
    color: var(--color-accent);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.work-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.work-desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.work-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.work-tag {
    font-size: 12px;
    color: var(--color-text-muted);
    background-color: var(--color-bg);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

/* 关于我 - 面试简历部分 */
.about-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-card);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.about-image {
    border-radius:170px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 100px;
    /* 关于页图片容器保护 */
    position: relative;
}
.about-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: auto;
    background: transparent;
}

.about-text h2 {
    margin-bottom: var(--spacing-lg);
}

.about-intro {
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.section-title-small {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.skill-category {
    margin-bottom: var(--spacing-md);
}

.skill-category-title {
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.skill-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.skill-item {
    background-color: var(--color-bg);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    border: 1px solid var(--color-border);
}

.experience-list {
    margin-bottom: var(--spacing-xl);
}

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

.experience-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

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

.experience-title {
    font-weight: 600;
}

.experience-date {
    font-size: 14px;
    color: var(--color-text-muted);
}

.experience-company {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.experience-desc {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.awards-list {
    list-style: none;
}

.award-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-size: 14px;
}

.award-icon {
    color: var(--color-accent);
}

/* 联系方式 */
.contact-section {
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-info {
    margin: var(--spacing-xl) 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-item {
    font-size: 18px;
    font-weight: 500;
}

.contact-item a {
    color: var(--color-text);
}

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

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

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    color: var(--color-text);
}

.social-link:hover {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

/* 页脚 */
.footer {
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--color-border);
    text-align: center;
    background-color: var(--color-card);
}

.footer p {
    margin-bottom: 0;
    font-size: 14px;
    color: var(--color-text-muted);
}

/* 返回顶部 */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background-color: var(--color-accent);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--color-hover);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .hero-image {
        order: -1;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .works-grid {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .about-image {
        position: static;
        max-width: 300px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .experience-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .experience-date {
        margin-top: var(--spacing-xs);
    }
}

/* 动画 */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 600ms ease-out, transform 600ms ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========== 缺失的模态框样式（必须加） ========== */
.modal {
    position: fixed;
    /*  新增这一行，强制从屏幕最顶部开始 */
    top: 0 !important;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.85);
    /* 原来的代码：z-index: 9999; */
    z-index: 10001; /* 改成10001，比导航栏高10倍 */
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 250ms ease;
    padding: 20px;
    overflow-y: auto;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-container {
    background-color: var(--color-card);
    border-radius: var(--radius-md);
    max-width: 1000px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    padding: var(--spacing-xl);
    position: relative;
    transform: translateY(30px);
    transition: transform 250ms ease;
}

.modal.active .modal-container {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: flex-end;
    margin-bottom: var(--spacing-lg);
    position: sticky;
    top: -35px;
    background-color: var(--color-card);
    padding-top: var(--spacing-sm);
    z-index: 1;
}

.modal-close {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--color-text);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color var(--transition);
}

.modal-close:hover {
    background-color: var(--color-hover-light);
    color: var(--color-accent);
}

.project-content {
    margin-bottom: var(--spacing-2xl);
}

.project-image {
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

/* 同时修复你CSS里的另一个bug：作品描述文字溢出 */
.work-desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
}