/* Base Styles */
:root {
    --primary-color: #333;
    --secondary-color: #666;
    --accent-color: #4caf50;
    --background-color: #fff;
    --card-background: #f9f9f9;
    --border-color: #eaeaea;
    --text-color: #333;
    --link-color: #0070f3;
    --link-hover-color: #0051a8;
    --header-height: 50px;
    --container-width: 1000px;
    --transition-speed: 0.3s;
}

.dark-mode {
    --primary-color: #f5f5f5;
    --secondary-color: #ccc;
    --accent-color: #4caf50;
    --background-color: #121212;
    --card-background: #1e1e1e;
    --border-color: #333;
    --text-color: #f5f5f5;
    --link-color: #64b5f6;
    --link-hover-color: #90caf9;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

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

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

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

/* Header Styles */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--background-color);
    z-index: 1000;
    padding: 10px 0;
    display: flex;
    align-items: center;
    transition: background-color var(--transition-speed);
}

header .container {
    width: 100%;
}

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

.profile {
    display: flex;
    align-items: center;
}

.profile-img {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    object-fit: cover;
}

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

nav {
    background-color: var(--background-color);
    border-radius: 50px;
    padding: 6px 25px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.03);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

nav ul li {
    margin: 0 15px;
}

nav ul li a {
    color: #333;
    font-weight: 500;
    transition: color var(--transition-speed);
    font-size: 0.9rem;
    position: relative;
    display: block;
    padding: 6px 0;
}

nav ul li a:hover {
    color: #00b894;
}

nav ul li a.active {
    color: #00b894;
}

.theme-toggle {
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--secondary-color);
    transition: all var(--transition-speed);
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: transparent;
}

.theme-toggle:hover {
    color: var(--accent-color);
    background-color: rgba(0, 0, 0, 0.03);
}

.dark-mode .theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.theme-toggle i {
    transition: transform 0.5s ease;
}

.dark-mode .theme-toggle i {
    transform: rotate(180deg);
}

/* Main Content Styles */
main {
    margin-top: 60px; /* 为固定的header留出空间 */
}

/* Hero Section */
.hero {
    padding: 60px 0 40px;
    text-align: left;
    position: relative;
    overflow: hidden;
}

.hero-wrapper {
    display: flex;
    align-items: center;
    gap: 60px;
    min-height: 500px;
}

.hero-content {
    max-width: 600px;
    margin: 0;
    flex: 1;
}

.hero-decoration {
    flex: 0 0 300px;
    height: 400px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.geometric-shape {
    position: absolute;
    background: transparent;
    opacity: 0.6;
}

.shape-1 {
    width: 80px;
    height: 1px;
    background: #333;
    top: 20%;
    right: 15%;
    transform-origin: left center;
    animation: float1 8s ease-in-out infinite;
}

.shape-2 {
    width: 1px;
    height: 60px;
    background: #333;
    top: 40%;
    right: 45%;
    transform-origin: center bottom;
    animation: float2 6s ease-in-out infinite;
}

.shape-3 {
    width: 50px;
    height: 1px;
    background: #333;
    top: 70%;
    right: 25%;
    transform-origin: right center;
    animation: float3 7s ease-in-out infinite;
}

.shape-4 {
    width: 1px;
    height: 40px;
    background: #333;
    top: 10%;
    right: 70%;
    transform-origin: center top;
    animation: float4 5s ease-in-out infinite;
}

@keyframes float1 {
    0%, 100% { transform: rotate(0deg) translateY(0); }
    50% { transform: rotate(8deg) translateY(-3px); }
}

@keyframes float2 {
    0%, 100% { transform: rotate(0deg) translateY(0); }
    50% { transform: rotate(-5deg) translateY(-4px); }
}

@keyframes float3 {
    0%, 100% { transform: rotate(0deg) translateY(0); }
    50% { transform: rotate(-10deg) translateY(2px); }
}

@keyframes float4 {
    0%, 100% { transform: rotate(0deg) translateY(0); }
    50% { transform: rotate(6deg) translateY(-5px); }
}



/* Dark mode adjustments for geometric shapes */
.dark-mode .shape-1 {
    background: #ccc;
}

.dark-mode .shape-2 {
    background: #ccc;
}

.dark-mode .shape-3 {
    background: #ccc;
}

.dark-mode .shape-4 {
    background: #ccc;
}

.profile-img-large {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 20px;
}

.main-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
    text-align: left;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    justify-content: flex-start;
}

.social-links a {
    font-size: 1.2rem;
    color: var(--secondary-color);
    transition: color var(--transition-speed);
}

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

.bio {
    font-size: 1.05rem;
    color: var(--secondary-color);
    margin-bottom: 30px;
    line-height: 1.6;
    text-align: left;
}

/* About Section */
.about {
    padding: 60px 0;
    background-color: var(--background-color);
    transition: background-color var(--transition-speed);
}

.about-content {
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

.about-text {
    flex: 1.5;
    max-width: 650px;
}

.about-text h2 {
    font-size: 2.4rem;
    margin-bottom: 20px;
    color: var(--primary-color);
    line-height: 1.3;
    font-weight: 600;
}

.about-text p {
    margin-bottom: 20px;
    color: var(--secondary-color);
    font-size: 0.95rem;
    line-height: 1.7;
}

.about-image {
    flex: 0 0 220px;
    max-width: 220px;
    margin-top: 100px;
    margin-left: 20px;
    align-self: flex-start;
}

.about-image img {
    animation: owlFloat 3s ease-in-out infinite;
    transform-origin: center center;
    border-radius: 5px;
}

@keyframes owlFloat {
    0%, 100% {
        transform: translateY(0) scale(1);
    }
    25% {
        transform: translateY(-3px) scale(1.005);
    }
    50% {
        transform: translateY(-2px) scale(1.003);
    }
    75% {
        transform: translateY(-4px) scale(1.008);
    }
}

/* Articles Section */
.articles {
    padding: 60px 0;
}

.articles h2 {
    font-size: 2.4rem;
    margin-bottom: 40px;
    color: var(--primary-color);
    font-weight: 600;
}



.article-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.article-item {
    padding-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
}

.article-date {
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.article-title {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--primary-color);
    font-weight: 600;
}

.article-content {
    margin-bottom: 15px;
}

.article-preview,
.article-full {
    color: var(--secondary-color);
    font-size: 0.95rem;
    line-height: 1.7;
    white-space: pre-line;
}

.toggle-btn {
    background: none;
    border: none;
    color: #0c9;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    padding: 0;
    text-decoration: none;
    transition: color var(--transition-speed);
}

.toggle-btn:hover {
    color: #0a7;
}

/* Projects Section */
.projects {
    padding: 60px 0;
    background-color: var(--background-color);
    transition: background-color var(--transition-speed);
}

.projects h2 {
    font-size: 1.8rem;
    margin-bottom: 10px;
    color: var(--primary-color);
    font-weight: 600;
}

.projects > p {
    margin-bottom: 40px;
    color: var(--secondary-color);
    font-size: 0.95rem;
}

.project-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.project-detail {
    padding: 30px 20px;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    text-align: left;
    background: transparent;
    border: none;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-detail:hover {
    background-color: rgba(249, 249, 249, 0.8);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
}

.dark-mode .project-detail:hover {
    background-color: rgba(40, 40, 40, 0.8);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.project-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 0 20px 0;
    background-color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 
        0 0 0 1px rgba(0, 0, 0, 0.06),
        0 0 0 6px #ffffff,
        0 0 0 7px rgba(0, 0, 0, 0.04),
        0 2px 8px rgba(0, 0, 0, 0.08);
    position: relative;
}

.project-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.dark-mode .project-icon {
    background-color: #2d3748;
    box-shadow: 
        0 0 0 1px rgba(255, 255, 255, 0.12),
        0 0 0 6px #2d3748,
        0 0 0 7px rgba(255, 255, 255, 0.08),
        0 2px 8px rgba(0, 0, 0, 0.3);
}

.project-detail h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--primary-color);
    font-weight: 600;
}

.project-detail p {
    color: var(--secondary-color);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 20px;
    flex-grow: 1;
    text-align: left;
    max-width: calc(100% - 4em);
}

.project-detail a {
    display: block;
    font-size: 0.9rem;
    color: #0c9;
    margin-top: auto;
    text-decoration: none;
    transition: color var(--transition-speed);
}

.project-detail a::before {
    content: "🔗";
    margin-right: 6px;
    font-size: 0.8rem;
}

.project-detail a:hover {
    color: #0a7;
}

/* Tools Section */
.tools {
    padding: 60px 0;
}

.tools h2 {
    font-size: 1.8rem;
    margin-bottom: 10px;
    color: var(--primary-color);
    font-weight: 600;
}

.tools > p {
    margin-bottom: 40px;
    color: var(--secondary-color);
    font-size: 0.95rem;
}

.tools-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.tool-item h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--primary-color);
    padding-bottom: 10px;
    font-weight: 600;
}

.tool-detail {
    margin-bottom: 40px;
    border-left: 1px solid var(--border-color);
    padding-left: 15px;
}

.tool-detail h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
    color: var(--primary-color);
    font-weight: 600;
}

.tool-detail a {
    display: block;
    margin-bottom: 10px;
    margin-left: 1em;
    font-size: 0.9rem;
    color: #0c9;
}

.tool-detail a:hover {
    color: #0a7;
}

.tool-detail p {
    color: var(--secondary-color);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-left: 1em;
}

/* Footer */
footer {
    background-color: var(--background-color);
    padding: 30px 0;
    border-top: 1px solid var(--border-color);
    transition: background-color var(--transition-speed);
}

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

.footer-content p {
    color: var(--secondary-color);
    font-size: 0.9rem;
}

/* 移除之前添加的显示/隐藏样式 */
/* 隐藏所有板块，只显示当前激活的板块 */
section:not(.hero) {
    /* display: none; */
}

section.active {
    /* display: block; */
}

/* 默认显示首页内容 */
.hero {
    /* display: block; */
}

/* Responsive Styles */
@media (max-width: 992px) {
    .about-content {
        flex-direction: column;
    }
    
    .project-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    header {
        height: auto;
        padding: 15px 0;
    }
    
    .header-content {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-container {
        width: 100%;
    }
    
    nav {
        width: 100%;
        border-radius: 30px;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    nav ul li {
        margin: 0 10px;
    }
    
    .hero {
        padding: 40px 0;
    }
    
    .hero-wrapper {
        flex-direction: column;
        gap: 30px;
        min-height: auto;
    }

    .hero-decoration {
        flex: none;
        width: 100%;
        height: 200px;
        margin-top: 20px;
    }

    .geometric-shape {
        opacity: 0.5;
    }

    .shape-1 {
        width: 50px;
        height: 1px;
        top: 25%;
        right: 10%;
    }

    .shape-2 {
        width: 1px;
        height: 40px;
        top: 45%;
        right: 40%;
    }

    .shape-3 {
        width: 35px;
        height: 1px;
        top: 70%;
        right: 20%;
    }

    .shape-4 {
        width: 1px;
        height: 25px;
        top: 15%;
        right: 70%;
    }
    
    .main-title {
        font-size: 1.8rem;
    }
    
    .about-text h2,
    .articles h2,
    .projects h2,
    .tools h2 {
        font-size: 1.6rem;
    }
    
    .project-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .hero-decoration {
        display: none;
    }
}