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

:root {
    --color-bg: #ffffff;
    --color-text: #1a1a1a;
    --color-accent: #0066cc;
    --color-accent-light: #e6f0ff;
    --color-border: #e0e0e0;
    --color-accent-hover: #0052a3;
    --font-heading: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-code: "Fira Code", "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, monospace;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
}

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.navbar {
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
}

.hamburger {
    display: none;
    width: 40px;
    height: 30px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    position: relative;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--color-text);
    transition: all 0.3s ease-in-out;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.hamburger span:nth-child(1) {
    top: 6px;
}

.hamburger span:nth-child(2) {
    top: 14px;
}

.hamburger span:nth-child(3) {
    top: 22px;
}

.hamburger.active span:nth-child(1) {
    transform: translateX(-50%) rotate(45deg);
    top: 14px;
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: translateX(-50%) rotate(-45deg);
    top: 14px;
}

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

.nav-menu a {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--color-accent);
}

.main-content {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
}

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

.hero h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: 1.25rem;
    color: #666;
}

.newsfeed {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.newsfeed-card {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
}

.newsfeed-card:last-child {
    border-bottom: none;
}

.newsfeed-link {
    text-decoration: none;
    color: var(--color-text);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.newsfeed-main {
    flex: 1;
}

.newsfeed-title {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-text);
    transition: color 0.3s;
    display: block;
}

.newsfeed-card:hover .newsfeed-title {
    color: var(--color-accent);
}

.newsfeed-excerpt {
    font-size: 0.9rem;
    color: #666;
    margin-top: 0.25rem;
    line-height: 1.4;
}

.newsfeed-date {
    font-size: 0.875rem;
    color: #666;
    white-space: nowrap;
}

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

.section-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-lg);
}

.page-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.page-subtitle {
    font-size: 1.25rem;
    color: #666;
    margin-bottom: var(--spacing-lg);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.project-card {
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    transition: box-shadow 0.3s;
}

.project-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.project-link {
    text-decoration: none;
    color: var(--color-text);
    display: block;
}

.project-github-icon {
    position: absolute;
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    width: 40px;
    height: 40px;
    background-color: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: background-color 0.3s, transform 0.3s;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.project-github-icon:hover {
    background-color: var(--color-accent-hover);
    transform: scale(1.1);
}

.project-tags {
    padding-bottom: 50px;
}

.project-thumbnail {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.project-content {
    padding: var(--spacing-md);
}

.project-content h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.project-content p {
    color: #666;
    margin-bottom: var(--spacing-md);
}

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

.tag {
    background-color: var(--color-accent-light);
    color: var(--color-accent);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
}

.blog-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.blog-card {
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
}

.blog-link {
    display: flex;
    text-decoration: none;
    color: var(--color-text);
    gap: var(--spacing-lg);
}

.blog-thumbnail {
    width: 300px;
    height: 200px;
    object-fit: cover;
}

.blog-content {
    flex: 1;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
}

.blog-category {
    color: var(--color-accent);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

.blog-content h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.blog-date {
    color: #666;
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

.blog-excerpt {
    color: #666;
    line-height: 1.6;
}

.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-lg);
}

.pagination-link {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-accent);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.pagination-link:hover {
    background-color: var(--color-accent-hover);
}

.pagination-info {
    color: #666;
}

.project-detail {
    max-width: 900px;
    margin: 0 auto;
}

.project-banner {
    width: 100%;
    height: 400px;
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
}

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

.project-detail-content {
    padding: var(--spacing-lg) 0;
}

.project-detail-content h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.project-description {
    font-size: 1.25rem;
    color: #666;
    margin-bottom: var(--spacing-lg);
}

.project-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.project-links {
    display: flex;
    gap: var(--spacing-sm);
}

.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.3s;
    display: inline-block;
}

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

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

.btn-secondary {
    background-color: var(--color-border);
    color: var(--color-text);
}

.btn-secondary:hover {
    background-color: #d0d0d0;
}

.about-container {
    max-width: 800px;
    margin: 0 auto;
}

.about-header {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    align-items: flex-start;
}

.about-avatar {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--color-accent-light);
}

.about-info {
    flex: 1;
}

.about-info h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.about-title {
    font-size: 1.5rem;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
}

.about-social {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.social-link {
    color: var(--color-text);
    text-decoration: none;
    transition: color 0.3s;
}

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

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

.about-section {
    margin-bottom: var(--spacing-xl);
}

.about-section h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

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

.skill-tag {
    background-color: var(--color-accent-light);
    color: var(--color-accent);
    padding: 0.5rem 1rem;
    border-radius: 9999px;
}

.experience-list,
.education-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.experience-item,
.education-item {
    padding-left: var(--spacing-md);
    border-left: 3px solid var(--color-accent);
}

.experience-item h3,
.education-item h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.experience-company,
.education-school {
    color: #666;
    margin-bottom: var(--spacing-sm);
}

.experience-description {
    line-height: 1.6;
}

.blog-post {
    max-width: 800px;
    margin: 0 auto;
}

.blog-header {
    margin-bottom: var(--spacing-xl);
}

.back-button {
    display: inline-block;
    color: var(--color-accent);
    text-decoration: none;
    margin-bottom: var(--spacing-md);
    transition: color 0.3s;
}

.back-button:hover {
    color: var(--color-accent-hover);
}

.blog-header h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.blog-hero-image {
    width: 100%;
    height: 400px;
    overflow: hidden;
    margin: var(--spacing-lg) 0;
}

.blog-hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.blog-body {
    line-height: 1.8;
    font-size: 1.125rem;
}

.blog-body h1,
.blog-body h2,
.blog-body h3,
.blog-body h4,
.blog-body h5,
.blog-body h6 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.blog-body h1 {
    font-size: 2.5rem;
}

.blog-body h2 {
    font-size: 2rem;
}

.blog-body h3 {
    font-size: 1.5rem;
}

.blog-body p {
    margin-bottom: var(--spacing-md);
}

.blog-body a {
    color: var(--color-accent);
    text-decoration: none;
}

.blog-body a:hover {
    text-decoration: underline;
}

.blog-body img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
}

.blog-body pre {
    background-color: var(--color-accent-light);
    padding: var(--spacing-md);
    border-radius: 4px;
    overflow-x: auto;
    margin-bottom: var(--spacing-md);
}

.blog-body code {
    font-family: var(--font-code);
    background-color: var(--color-accent-light);
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
}

.blog-body pre code {
    background-color: transparent;
    padding: 0;
}

.blog-body blockquote {
    border-left: 4px solid var(--color-accent);
    padding-left: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    color: #666;
}

.blog-body ul,
.blog-body ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.blog-body li {
    margin-bottom: var(--spacing-sm);
}

.error-page {
    text-align: center;
    padding: var(--spacing-xl);
}

.error-title {
    font-size: 6rem;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
}

.error-message {
    font-size: 1.5rem;
    color: #666;
    margin-bottom: var(--spacing-lg);
}

.empty-state {
    text-align: center;
    color: #666;
    font-size: 1.25rem;
    padding: var(--spacing-xl);
}

.footer {
    background-color: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg);
    text-align: center;
    color: #666;
}

@media (max-width: 768px) {
    .navbar {
        overflow: visible;
    }

    .nav-container {
        position: relative;
    }

    .nav-container::after {
        content: '';
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        height: calc(100vh - 60px);
        background-color: var(--color-bg);
        transform: scaleY(0);
        transform-origin: top;
        transition: transform 0.3s ease-in-out;
        z-index: 998;
        pointer-events: none;
    }

    .nav-container.menu-open::after {
        transform: scaleY(1);
        pointer-events: auto;
    }

    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        flex-direction: column;
        background-color: var(--color-bg);
        width: 100%;
        text-align: center;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        z-index: 999;
        clip-path: inset(0 0 100% 0);
        transition: clip-path 0.3s ease-in-out;
        min-height: calc(100vh - 60px);
    }

    .nav-menu.active {
        clip-path: inset(0 0 0 0);
    }

    .nav-menu li {
        display: block;
    }

    .nav-menu a {
        display: block;
        padding: var(--spacing-md);
    }

    .hero h1 {
        font-size: 2rem;
    }

    .newsfeed-excerpt {
        display: none;
    }

    .newsfeed-link {
        align-items: baseline;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .blog-link {
        flex-direction: column;
    }

    .blog-thumbnail {
        width: 100%;
        height: 200px;
    }

    .about-header {
        flex-direction: column;
        text-align: center;
    }

    .about-info {
        text-align: center;
        width: 100%;
    }

    .about-social {
        align-items: center;
    }

    .about-avatar {
        margin: 0 auto;
    }

    .blog-header h1 {
        font-size: 2rem;
    }

    .project-meta {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Preview Mode Badge */
.preview-badge {
    display: inline-block;
    background-color: #ff6b35;
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-left: 0.5rem;
    vertical-align: middle;
}

.preview-banner {
    background-color: #ff6b35;
    color: white;
    text-align: center;
    padding: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.dev-banner {
    background-color: #7c3aed;
    color: white;
    text-align: center;
    padding: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}