/* 高级Chrome风格主题 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f8f9fa;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #4285f4, #34a853, #fbbc05, #ea4335);
    border-radius: 5px;
    transition: all 0.3s ease;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #3367d6, #2e8b57, #f9ab00, #d23f31);
    transform: scale(1.05);
}

:root {
    /* 主色调 - Chrome风格 */
    --bg-color: #ffffff;
    --text-primary: #202124;
    --text-secondary: #5f6368;
    --border-color: #dadce0;
    --accent-color: #1a73e8;
    --accent-light: #e8f0fe;
    --nav-bg: #ffffff;
    --footer-text: #80868b;
    --hover-bg: #f8f9fa;
    
    /* 新增高级变量 */
    --gradient-primary: linear-gradient(135deg, #4285f4, #34a853);
    --gradient-secondary: linear-gradient(135deg, #fbbc05, #ea4335);
    --gradient-accent: linear-gradient(135deg, #1a73e8, #0d47a1);
    --shadow-sm: 0 1px 2px 0 rgba(60, 64, 67, 0.1);
    --shadow-md: 0 2px 6px 2px rgba(60, 64, 67, 0.15);
    --shadow-lg: 0 4px 12px 4px rgba(60, 64, 67, 0.2);
    --shadow-xl: 0 8px 24px 8px rgba(60, 64, 67, 0.25);
    --card-bg: #ffffff;
    --card-border: #e8eaed;
    --card-shadow: var(--shadow-sm);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color 0.3s ease;
    -webkit-tap-highlight-color: transparent;
    overflow-x: hidden;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: var(--nav-bg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    min-height: 64px;
}

.logo-area {
    display: flex;
    align-items: center;
}

.avatar-link {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.avatar-img {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid #e0e0e0;
    transition: all 0.3s ease;
}

.avatar-img:hover {
    border-color: var(--accent-color);
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.3rem 0;
    white-space: nowrap;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s ease;
}

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

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

.nav-actions {
    display: flex;
    align-items: center;
}

.main-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    text-align: center;
    background-color: var(--bg-color);
    position: relative;
    z-index: 1;
}

.hero {
    max-width: 800px;
    width: 100%;
}

.greeting {
    font-size: clamp(3rem, 10vw, 5rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    animation: fadeIn 0.6s ease-out;
}

.sub {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 400;
    max-width: 600px;
    margin: 0 auto;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
    letter-spacing: 0.05em;
}

@keyframes fadeIn {
    0% { opacity: 0; transform: translateY(-10px); }
    100% { opacity: 1; transform: translateY(0); }
}

/* Chrome风格动画 */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

@keyframes slideInFromLeft {
    0% { opacity: 0; transform: translateX(-30px); }
    100% { opacity: 1; transform: translateX(0); }
}

@keyframes slideInFromRight {
    0% { opacity: 0; transform: translateX(30px); }
    100% { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
    0% { opacity: 0; transform: scale(0.9); }
    100% { opacity: 1; transform: scale(1); }
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 主页导航网格样式 */
.main-nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    width: 100%;
    margin: 4rem auto 0;
    padding: 0 2rem;
}

.nav-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.nav-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-accent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.nav-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.nav-card:hover::before {
    opacity: 1;
}

.nav-card-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.nav-card:hover .nav-card-icon {
    transform: scale(1.2) rotate(5deg);
    animation: float 2s ease-in-out infinite;
}

.nav-card-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all 0.3s ease;
}

.nav-card:hover .nav-card-title {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-card-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.nav-card-arrow {
    color: var(--accent-color);
    font-size: 1.5rem;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
}

.nav-card:hover .nav-card-arrow {
    opacity: 1;
    transform: translateX(0);
}

/* 动画延迟类 */
.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }
.animate-delay-5 { animation-delay: 0.5s; }

/* 更新现有组件的过渡效果 */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: var(--nav-bg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    min-height: 64px;
    transition: var(--transition-smooth);
}

.avatar-img {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid #e0e0e0;
    transition: var(--transition-smooth);
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition-smooth);
    position: relative;
    padding: 0.3rem 0;
    white-space: nowrap;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2rem;
    transition: var(--transition-smooth);
    text-align: left;
    box-shadow: var(--shadow-sm);
}

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

.contact-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-sm);
}

.contact-card:hover {
    border-color: var(--accent-color);
    box-shadow: var(--shadow-lg);
    transform: translateX(8px);
}

.article-card,
.project-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2rem;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-sm);
}

.article-card:hover,
.project-card:hover {
    border-color: var(--accent-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
}

.footer {
    text-align: center;
    padding: 1.5rem 2rem;
    color: var(--footer-text);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-color);
    position: relative;
    z-index: 1;
    transition: var(--transition-smooth);
}

.footer span {
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer:hover span {
    opacity: 1;
}

/* 容器样式 */
.container {
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
}

.content-header {
    text-align: center;
    margin-bottom: 3rem;
    padding-top: 1rem;
}

.content-header h1 {
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.content-header p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* 联系卡片 */
.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-emoji {
    font-size: 2rem;
    min-width: 50px;
    text-align: center;
}

.contact-info {
    flex: 1;
}

.contact-info h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.contact-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.contact-arrow {
    color: var(--accent-color);
    font-size: 1.2rem;
    opacity: 0.6;
    transition: var(--transition-smooth);
}

.contact-card:hover .contact-arrow {
    opacity: 1;
    transform: translateX(4px);
}

/* 表单样式 */
.contact-form {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2.5rem;
    margin-top: 2rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

.contact-form:hover {
    box-shadow: var(--shadow-md);
}

.form-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--text-primary);
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.form-group {
    margin-bottom: 1.8rem;
}

.form-label {
    display: block;
    margin-bottom: 0.6rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 1rem;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition-smooth);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
}

.form-textarea {
    min-height: 140px;
    resize: vertical;
}

.form-button {
    background: var(--gradient-accent);
    color: white;
    border: none;
    border-radius: 12px;
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    width: 100%;
    font-family: inherit;
    box-shadow: var(--shadow-sm);
}

.form-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.form-note {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    opacity: 0.8;
}

/* 文章网格 */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    width: 100%;
}

.article-date {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

.article-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

.article-excerpt {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1rem;
    flex: 1;
}

.article-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    background: var(--accent-light);
    color: var(--accent-color);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    transition: var(--transition-smooth);
}

.tag:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* 项目网格 */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    width: 100%;
}

.project-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

.project-card p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 1.2rem;
    line-height: 1.6;
}

.project-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-smooth);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.project-link:hover {
    color: #0d47a1;
    gap: 0.8rem;
}

/* 关于页面内容 */
.about-content {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 3rem;
    width: 100%;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

.about-content:hover {
    box-shadow: var(--shadow-md);
}

.about-content h2 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-top: 2.5rem;
    margin-bottom: 1.2rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.about-content h2:first-child {
    margin-top: 0;
}

.about-content p {
    margin-bottom: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1.05rem;
}

.about-content ul,
.about-content ol {
    margin-left: 1.8rem;
    margin-bottom: 1.2rem;
    color: var(--text-secondary);
}

.about-content li {
    margin-bottom: 0.6rem;
    line-height: 1.6;
}

/* 主页导航网格响应式设计 */
@media (max-width: 768px) {
    .main-nav-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1.5rem;
        margin: 3rem auto 0;
        padding: 0 1.5rem;
    }
    
    .nav-card {
        padding: 2rem 1.5rem;
    }
    
    .nav-card-icon {
        font-size: 2.5rem;
    }
    
    .nav-card-title {
        font-size: 1.3rem;
    }
}

@media (max-width: 480px) {
    .main-nav-grid {
        grid-template-columns: 1fr;
        gap: 1.2rem;
        margin: 2rem auto 0;
        padding: 0 1rem;
    }
    
    .nav-card {
        padding: 1.8rem 1.2rem;
    }
    
    .nav-card-icon {
        font-size: 2rem;
        margin-bottom: 1rem;
    }
    
    .nav-card-title {
        font-size: 1.2rem;
    }
    
    .nav-card-desc {
        font-size: 0.9rem;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar {
        padding: 0.8rem 1rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .nav-links a {
        font-size: 0.85rem;
    }

    .avatar-img {
        width: 36px;
        height: 36px;
    }

    .greeting {
        font-size: clamp(2rem, 8vw, 3rem);
        margin-bottom: 1rem;
    }

    .sub {
        font-size: 1rem;
    }

    .articles-grid,
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .contact-form {
        padding: 1.5rem;
    }

    .about-content {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 0.6rem 0.8rem;
    }

    .nav-links {
        gap: 0.8rem;
    }

    .nav-links a {
        font-size: 0.75rem;
    }

    .avatar-img {
        width: 32px;
        height: 32px;
    }

    .greeting {
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }

    .sub {
        font-size: 0.9rem;
    }

    .footer {
        font-size: 0.75rem;
        padding: 1rem 0.8rem;
    }

    .contact-card {
        padding: 1rem;
        gap: 1rem;
    }

    .contact-emoji {
        font-size: 1.5rem;
        min-width: 40px;
    }
}