/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    letter-spacing: -0.02em;
    font-stretch: 101%;
    font-weight: 300;
}

:root {
    /* Monochrome Color Palette */
    --primary-white: #fafafa;
    --light-gray: #f5f5f5;
    --medium-gray: #8a8a8a;
    --dark-gray: #555555;
    --accent-color: #666666;
    --border-gray: #e5e5e5;
    
    /* Typography */
    --font-family: 'GT America', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 14px;
    --font-size-sm: 12px;
    --font-size-lg: 16px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    
    /* Spacing */
    --spacing-xs: 0.4rem;
    --spacing-sm: 0.8rem;
    --spacing-md: 1.2rem;
    --spacing-lg: 1.6rem;
    --spacing-xl: 2.4rem;
    --spacing-2xl: 3.2rem;
    
    /* Layout */
    --sidebar-width: 140px;
    --viewport-padding-horizontal: 80px;
    --viewport-padding-vertical: 72px;
    --viewport-padding-bottom: 48px;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--dark-gray);
    background: var(--primary-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    margin: 0;
    padding: var(--viewport-padding-vertical) var(--viewport-padding-horizontal) var(--viewport-padding-bottom);
    box-sizing: border-box;
    letter-spacing: -0.02em;
    font-stretch: 101%;
    font-weight: 300;
}

/* Sidebar Navigation */
.sidebar {
    position: fixed;
    top: var(--viewport-padding-vertical);
    left: var(--viewport-padding-horizontal);
    width: var(--sidebar-width);
    height: calc(100vh - var(--viewport-padding-vertical) - var(--viewport-padding-bottom));
    background: var(--primary-white);
    display: flex;
    flex-direction: column;
    z-index: 1000;
}

.nav-links {
    flex: 1;
    padding: var(--spacing-xl) 0;
}

.nav-link {
    display: block;
    padding: var(--spacing-xs) var(--spacing-lg);
    color: var(--medium-gray);
    text-decoration: none;
    font-weight: 300;
    font-size: var(--font-size-base);
    transition: all 0.2s ease;
}

.nav-link:hover {
    color: var(--dark-gray);
}

.nav-link.active {
    color: var(--accent-color);
    font-weight: 500;
}

.nav-footer {
    position: fixed;
    bottom: var(--viewport-padding-bottom);
    left: calc(var(--viewport-padding-horizontal) + var(--spacing-lg));
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    z-index: 1000;
}

.contact-link {
    color: var(--medium-gray);
    text-decoration: none;
    font-size: var(--font-size-base);
    transition: color 0.2s ease;
    white-space: nowrap;
}

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

/* Social Links - Bottom Right */
.social-links {
    position: fixed;
    bottom: var(--viewport-padding-bottom);
    right: calc(var(--viewport-padding-horizontal) + var(--spacing-lg));
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    justify-content: flex-end;
    z-index: 1000;
}

.social-link {
    color: var(--medium-gray);
    text-decoration: none;
    font-size: var(--font-size-base);
    transition: color 0.2s ease;
}

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

/* Main Content */
.main-content {
    margin-left: calc(var(--sidebar-width) + var(--spacing-sm));
    min-height: calc(100vh - var(--viewport-padding-vertical) - var(--viewport-padding-bottom));
    background: var(--primary-white);
    width: calc(100vw - var(--sidebar-width) - var(--viewport-padding-horizontal) - var(--spacing-sm));
    overflow-x: hidden;
}

.content {
    max-width: 720px;
    padding: var(--spacing-xl) var(--spacing-lg);
    margin: 0 auto;
}

.hero-name {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    color: var(--dark-gray);
    margin: 0;
    letter-spacing: -0.05em;
    font-stretch: 101%;
    line-height: 0.9;
    text-transform: lowercase;
}

.hero-name .letter {
    display: inline-block;
    opacity: 1;
    font-weight: 700;
    text-transform: lowercase;
}

/* Lighter color for 'a' letters */
.hero-name .letter-a {
    color: #c0c0c0 !important;
}

.bigskip {
    height: 4rem;
}

.intro-text {
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--dark-gray);
    font-weight: 300;
    max-width: 600px;
    opacity: 1;
}


/* Page Headers */
.page-header {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-gray);
}

.page-title {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
    font-stretch: 101%;
}

.page-subtitle {
    font-size: var(--font-size-lg);
    color: var(--medium-gray);
    font-weight: 300;
    letter-spacing: -0.02em;
    font-stretch: 101%;
}

/* Content Sections */
.section {
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
    font-stretch: 101%;
}

/* Cards */
.card {
    background: var(--primary-white);
    border: 1px solid var(--border-gray);
    border-radius: 8px;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    transition: all 0.2s ease;
}

.card:hover {
    border-color: var(--accent-color);
    box-shadow: 0 2px 8px rgba(52, 152, 219, 0.1);
}

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

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--dark-gray);
    flex: 1;
}

.company {
    font-size: var(--font-size-base);
    color: var(--accent-color);
    font-weight: 500;
}

.card-meta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.card-location {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    background: var(--light-gray);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
}

.card-date {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    background: var(--light-gray);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-weight: 500;
}

.card-content {
    color: var(--dark-gray);
    line-height: 1.6;
}

/* Lists */
ul, ol {
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.6;
}

/* Links */
a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* Research specific styles */
.research-card {
    border-left: 4px solid var(--accent-color);
}

/* Make research page text match education page size */
.research-card .research-abstract,
.research-card .achievements li,
.research-card .research-highlights h4 {
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

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

.research-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--dark-gray);
    margin: 0;
    flex: 1;
}

.research-title a {
    color: var(--dark-gray);
    text-decoration: none;
    transition: color 0.2s ease;
    font-weight: 600;
}

.research-title a:hover {
    color: var(--accent-color);
    text-decoration: underline;
    font-weight: 600;
}

.research-meta {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    flex-wrap: wrap;
}

.research-period {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    flex-shrink: 0;
    margin-left: var(--spacing-md);
}

.research-status {
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-weight: 500;
}

.research-status.active {
    background: #f0f0f0;
    color: #707070;
}

.research-status.completed {
    background: #eeeeee;
    color: var(--accent-color);
}

.research-advisors {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
    align-items: center;
}

.advisor {
    font-size: var(--font-size-sm);
    color: var(--accent-color);
    background: var(--light-gray);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-weight: 500;
}

.institution {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    font-style: italic;
}

.research-abstract {
    font-size: var(--font-size-sm);
    color: var(--dark-gray);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.research-highlights h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-sm);
}

.research-keywords {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    margin-top: var(--spacing-md);
}

.keyword {
    font-size: var(--font-size-sm);
    background: var(--light-gray);
    color: var(--medium-gray);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    border: 1px solid var(--border-gray);
}

/* Projects specific styles */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

/* Projects Showcase - New Tile Layout */
.projects-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.project-tile {
    background: var(--primary-white);
    border: 1px solid var(--border-gray);
    border-radius: 12px;
    padding: var(--spacing-lg);
    position: relative;
    transition: all 0.3s ease;
    overflow: hidden;
}

.project-tile::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--medium-gray));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-tile:hover::before {
    opacity: 1;
}

.project-tile:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    border-color: var(--accent-color);
}

.project-tile.featured::before {
    background: linear-gradient(90deg, var(--accent-color), #8a8a8a);
}

.project-tile.academic::before {
    background: linear-gradient(90deg, #666666, var(--medium-gray));
}

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


.project-number {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--border-gray);
    line-height: 1;
    user-select: none;
}

.project-badges {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
    flex-wrap: wrap;
}

.project-badge {
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 20px;
    font-weight: 500;
    text-transform: lowercase;
    letter-spacing: -0.01em;
}

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

.project-badge.enterprise {
    background: #f0f0f0;
    color: #666666;
}

.project-badge.recruiting {
    background: #e8f4f8;
    color: #2c5aa0;
}

.project-badge.academic {
    background: var(--light-gray);
    color: var(--dark-gray);
}

.project-status-mini {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    font-style: italic;
    padding: 2px 6px;
    background: var(--light-gray);
    border-radius: 8px;
}

.project-link-mini {
    font-size: var(--font-size-sm);
    color: var(--accent-color);
    text-decoration: none;
    padding: 2px 8px;
    border: 1px solid var(--accent-color);
    border-radius: 8px;
    transition: all 0.2s ease;
}

.project-link-mini:hover {
    background: var(--accent-color);
    color: var(--primary-white);
}

.project-tile-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--dark-gray);
    margin: 0 0 var(--spacing-sm) 0;
    line-height: 1.3;
}

.project-tile-desc {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
}

.project-tile-tech {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.mini-tech {
    font-size: var(--font-size-sm);
    background: var(--light-gray);
    color: var(--dark-gray);
    padding: 4px 8px;
    border-radius: 6px;
    font-weight: 500;
    border: 1px solid var(--border-gray);
    transition: all 0.2s ease;
}

.mini-tech:hover {
    background: var(--accent-color);
    color: var(--primary-white);
    border-color: var(--accent-color);
}

.project-card {
    background: var(--primary-white);
    border: 1px solid var(--border-gray);
    border-radius: 8px;
    padding: var(--spacing-lg);
    transition: all 0.2s ease;
}

.project-card:hover {
    border-color: var(--accent-color);
    box-shadow: 0 2px 8px rgba(52, 152, 219, 0.1);
}

.project-card.featured {
    border-left: 4px solid var(--accent-color);
}

.project-card.academic {
    border-left: 4px solid #666666;
}

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

.project-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--dark-gray);
    flex: 1;
}

.project-links {
    display: flex;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.project-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    color: var(--accent-color);
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    border: 1px solid var(--accent-color);
    transition: all 0.2s ease;
}

.project-link:hover {
    background: var(--accent-color);
    color: var(--primary-white);
}

.project-status {
    display: flex;
    align-items: center;
}

.status-badge {
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-weight: 500;
}

.status-badge.private {
    background: #f0f0f0;
    color: #555555;
}

.course-tag {
    font-size: var(--font-size-sm);
    background: #f0f0f0;
    color: #707070;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-weight: 500;
}

.project-description {
    font-size: var(--font-size-base);
    color: var(--dark-gray);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.project-features h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-sm);
}

.project-features ul {
    list-style: none;
    padding: 0;
    margin-bottom: var(--spacing-md);
}

.project-features li {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    margin-bottom: var(--spacing-xs);
    padding-left: var(--spacing-sm);
    position: relative;
}

.project-features li::before {
    content: '•';
    color: var(--accent-color);
    position: absolute;
    left: 0;
}

.project-tech {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.tech-tag {
    font-size: var(--font-size-sm);
    background: var(--light-gray);
    color: var(--dark-gray);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    border: 1px solid var(--border-gray);
}

/* Skills */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.skill-category {
    background: var(--primary-white);
    border: 1px solid var(--border-gray);
    border-radius: 8px;
    padding: var(--spacing-lg);
    transition: all 0.2s ease;
}

.skill-category:hover {
    border-color: var(--accent-color);
    box-shadow: 0 2px 8px rgba(52, 152, 219, 0.1);
}

.skill-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    justify-content: center;
}

.skill-tag {
    background: var(--light-gray);
    color: var(--dark-gray);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    border: 1px solid var(--border-gray);
    transition: all 0.2s ease;
    cursor: default;
}

.skill-tag:hover {
    background: var(--accent-color);
    color: var(--primary-white);
    border-color: var(--accent-color);
}

/* Responsive Design */
@media (min-width: 1200px) {
    :root {
        --viewport-padding-horizontal: 100px;
        --viewport-padding-vertical: 80px;
        --sidebar-width: 160px;
    }
    
    .content {
        max-width: 800px;
    }
}

@media (max-width: 768px) {
    :root {
        --mobile-padding: 24px;
        --mobile-spacing-xs: 8px;
        --mobile-spacing-sm: 12px;
        --mobile-spacing-md: 16px;
        --mobile-spacing-lg: 24px;
        --mobile-spacing-xl: 32px;
        --mobile-content-to-socials: 16px;
    }
    
    html {
        overflow-x: hidden;
        scroll-behavior: smooth;
    }
    
    body {
        padding: 0;
        margin: 0;
        overflow-x: hidden;
        width: 100vw;
        max-width: 100vw;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
    }
    
    /* Mobile Navigation - Simple horizontal layout */
    .sidebar {
        position: static;
        top: auto;
        left: auto;
        width: 100%;
        height: auto;
        border: none;
        padding: var(--mobile-spacing-lg) var(--mobile-padding) var(--mobile-spacing-md);
        margin: 0;
        z-index: auto;
        background: var(--primary-white);
        box-shadow: none;
        pointer-events: auto;
    }
    
    /* Hamburger Menu Button */
    .mobile-nav-header {
        position: fixed;
        top: var(--mobile-spacing-lg);
        right: var(--mobile-padding);
        width: 44px;
        height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        user-select: none;
        background: var(--primary-white);
        border: 1px solid var(--border-gray);
        border-radius: 8px;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        pointer-events: auto;
        z-index: 1002;
    }
    
    .mobile-nav-toggle {
        width: 20px;
        height: 16px;
        position: relative;
        transition: all 0.3s ease;
    }
    
    .mobile-nav-toggle::before,
    .mobile-nav-toggle::after,
    .mobile-nav-toggle {
        background: var(--dark-gray);
    }
    
    .mobile-nav-toggle::before,
    .mobile-nav-toggle::after {
        content: '';
        position: absolute;
        width: 100%;
        height: 2px;
        left: 0;
        transition: all 0.3s ease;
    }
    
    .mobile-nav-toggle::before {
        top: 0;
    }
    
    .mobile-nav-toggle::after {
        bottom: 0;
    }
    
    .mobile-nav-toggle {
        background: var(--dark-gray);
        height: 2px;
        margin: 7px 0;
    }
    
    /* Hamburger animation when open */
    .mobile-nav-toggle.open {
        background: transparent;
    }
    
    .mobile-nav-toggle.open::before {
        transform: rotate(45deg);
        top: 7px;
    }
    
    .mobile-nav-toggle.open::after {
        transform: rotate(-45deg);
        bottom: 7px;
    }
    
    /* Blur overlay */
    .mobile-nav-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(250, 250, 250, 0.95);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 1001;
        pointer-events: none;
    }
    
    .mobile-nav-overlay.open {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }
    
    /* Mobile navigation dropdown - now always visible */
    .mobile-nav-dropdown {
        position: static;
        top: auto;
        left: auto;
        transform: none;
        width: 100%;
        max-width: none;
        background: transparent;
        border: none;
        border-radius: 0;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transition: none;
        z-index: auto;
        pointer-events: auto;
    }
    
    .main-content {
        flex: 1;
        margin: 0;
        width: 100%;
        max-width: 100vw;
        min-height: auto;
        padding: 0;
        overflow-x: hidden;
        display: flex;
        justify-content: center;
    }
    
    .content {
        padding: var(--mobile-spacing-lg) var(--mobile-padding);
        max-width: 100%;
        width: 100%;
        margin: 0 auto;
        overflow-x: hidden;
        box-sizing: border-box;
    }
    
    .nav-links {
        display: flex;
        flex-direction: row;
        padding: 0;
        gap: var(--mobile-spacing-lg);
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .nav-link {
        display: inline-block;
        width: auto;
        padding: var(--mobile-spacing-xs) 0;
        font-size: var(--font-size-base);
        font-weight: 400;
        color: var(--medium-gray);
        text-decoration: none;
        border-bottom: none;
        transition: color 0.2s ease;
        text-transform: lowercase;
        text-align: left;
        white-space: nowrap;
    }
    
    .nav-link:hover {
        color: var(--accent-color);
        background: transparent;
    }
    
    .nav-link.active {
        color: var(--accent-color);
        font-weight: 500;
        background: transparent;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-showcase {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .nav-footer {
        display: none; /* Hide footer with time on mobile */
    }
    
    /* Show mobile nav elements on mobile */
    .mobile-nav-dropdown {
        display: block;
    }
    
    .mobile-nav-header,
    .mobile-nav-overlay {
        display: none;
    }
    
    /* Mobile social links - aligned with content */
    .social-links {
        position: static;
        display: flex;
        flex-direction: column;
        justify-content: flex-start;
        align-items: flex-start;
        gap: 4px;
        margin-top: var(--mobile-content-to-socials);
        padding: 0 var(--mobile-padding);
        border-top: none;
        background: transparent;
    }
    
    .social-link {
        color: var(--medium-gray);
        text-decoration: none;
        font-size: var(--font-size-base);
        font-weight: 400;
        transition: color 0.2s ease;
        text-transform: lowercase;
        padding: var(--mobile-spacing-xs) 0;
    }
    
    .social-link:hover {
        color: var(--accent-color);
    }
    
    /* Show all social links on mobile */
    .social-links .social-link {
        display: block;
    }
    
    /* Hide social links on all pages except home page (mobile only) */
    body:not(.page-home) .social-links {
        display: none;
    }
    
    /* Mobile content and social alignment - consistent spacing */
    
    /* Add extra left and right padding to home page content */
    .page-home .hero-name,
    .page-home .intro-text {
        padding-left: 12px;
        padding-right: 12px;
    }
    
    /* Add extra left and right padding to education page content */
    .page-education .simple-item {
        padding-left: 12px;
        padding-right: 12px;
    }
    
    
    .project-tile {
        padding: var(--spacing-md);
    }
    
    /* Mobile typography improvements */
    .hero-name {
        font-size: clamp(1.75rem, 6vw, 2.5rem);
        line-height: 1.2;
        margin-bottom: var(--mobile-spacing-md);
        text-align: left;
        font-weight: 700;
    }
    
    .hero-tagline {
        font-size: 16px;
        line-height: 1.5;
        margin-bottom: var(--mobile-spacing-xl);
        text-align: center;
        color: var(--medium-gray);
    }
    
    .section-title {
        font-size: 20px;
        margin-bottom: var(--mobile-spacing-lg);
        text-align: center;
        font-weight: 500;
    }
    
    /* Improve mobile card spacing */
    .project-tile, .experience-card, .education-card {
        margin-bottom: var(--mobile-spacing-lg);
        max-width: 100%;
        overflow-x: hidden;
        box-sizing: border-box;
        padding: var(--mobile-spacing-lg);
        border-radius: 8px;
        background: var(--light-gray);
        border: 1px solid var(--border-gray);
    }
    
    .project-tile-title, .experience-title, .degree {
        font-size: 18px;
        font-weight: 500;
        margin-bottom: var(--mobile-spacing-sm);
        line-height: 1.3;
    }
    
    .project-tile-desc, .experience-description, .research-abstract {
        font-size: 14px;
        line-height: 1.5;
        color: var(--medium-gray);
        margin-bottom: var(--mobile-spacing-md);
    }
    
    /* Mobile timeline adjustments */
    .timeline {
        padding-left: var(--mobile-spacing-md);
    }
    
    .timeline-content {
        margin-left: var(--mobile-spacing-lg);
    }
    
    .timeline-marker {
        left: calc(var(--mobile-spacing-sm) - 5px);
    }
    
    /* Prevent horizontal overflow on mobile */
    * {
        max-width: 100%;
        box-sizing: border-box;
    }
    
    img, video, iframe, embed, object {
        max-width: 100%;
        height: auto;
        border-radius: 6px;
    }
    
    pre, code {
        overflow-x: auto;
        word-wrap: break-word;
        font-size: 13px;
        padding: var(--mobile-spacing-sm);
        border-radius: 4px;
        background: var(--light-gray);
    }
    
    .card, .research-card {
        overflow-x: hidden;
        word-wrap: break-word;
        padding: var(--mobile-spacing-lg);
        border-radius: 8px;
        margin-bottom: var(--mobile-spacing-lg);
    }
    
    /* Hide YouTube and Instagram on mobile */
    .social-links a[href*="youtube"], 
    .social-links a[href*="instagram"] {
        display: none;
    }
    
    .project-number {
        font-size: 16px;
        font-weight: 500;
    }
    
    /* Mobile research page improvements */
    .research-title {
        font-size: 18px;
        font-weight: 500;
        line-height: 1.3;
        margin-bottom: var(--mobile-spacing-sm);
    }
    
    .research-period {
        font-size: 14px;
        color: var(--medium-gray);
        margin-bottom: var(--mobile-spacing-md);
    }
    
    .achievements li {
        font-size: 14px;
        line-height: 1.5;
        margin-bottom: var(--mobile-spacing-sm);
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .content {
        padding: var(--spacing-sm);
    }
    
    .card {
        padding: var(--spacing-sm);
    }
    
    .intro-text {
        font-size: var(--font-size-base);
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: auto;
    overflow-x: hidden; /* Hide horizontal scrollbar */
}

body {
    overflow-x: hidden; /* Hide horizontal scrollbar */
}

/* Hide scrollbars on desktop while keeping scroll functionality */
@media (min-width: 769px) {
    body::-webkit-scrollbar {
        width: 0px;
        background: transparent;
    }
    
    html::-webkit-scrollbar {
        width: 0px;
        background: transparent;
    }
    
    /* Hide mobile nav elements on desktop */
    .mobile-nav-header,
    .mobile-nav-overlay {
        display: none;
    }
    
    /* Restore desktop sidebar positioning */
    .sidebar {
        position: fixed !important;
        top: var(--viewport-padding-vertical) !important;
        left: var(--viewport-padding-horizontal) !important;
        width: var(--sidebar-width) !important;
        height: calc(100vh - var(--viewport-padding-vertical) - var(--viewport-padding-bottom)) !important;
        background: var(--primary-white) !important;
        display: flex !important;
        flex-direction: column !important;
        z-index: 1000 !important;
        border: none !important;
        padding: 0 !important;
        margin: 0 !important;
        box-shadow: none !important;
        pointer-events: auto !important;
    }
    
    /* Show desktop nav elements - make dropdown always visible */
    .mobile-nav-dropdown {
        display: block !important;
        max-height: none !important;
        overflow: visible !important;
        background: transparent !important;
        transition: none !important;
        position: static !important;
        transform: none !important;
        opacity: 1 !important;
        visibility: visible !important;
        width: auto !important;
        box-shadow: none !important;
        border: none !important;
        border-radius: 0 !important;
    }
    
    .sidebar .nav-links {
        display: flex;
        flex-direction: column;
        padding: var(--spacing-xl) 0;
        gap: 0;
        flex: 1;
    }
    
    .sidebar .nav-link {
        display: block;
        padding: var(--spacing-xs) var(--spacing-lg);
        color: var(--medium-gray);
        text-decoration: none;
        font-weight: 300;
        font-size: var(--font-size-base);
        transition: all 0.2s ease;
        border-bottom: none;
        text-transform: lowercase;
        text-align: left;
        width: auto;
    }
    
    .sidebar .nav-link:hover {
        color: var(--dark-gray);
        background: transparent;
    }
    
    .sidebar .nav-link.active {
        color: var(--accent-color);
        font-weight: 500;
        background: transparent;
    }
    
    /* Restore desktop main-content positioning */
    .main-content {
        margin-left: calc(var(--sidebar-width) + var(--spacing-sm)) !important;
        min-height: calc(100vh - var(--viewport-padding-vertical) - var(--viewport-padding-bottom)) !important;
        background: var(--primary-white) !important;
        width: calc(100vw - var(--sidebar-width) - var(--viewport-padding-horizontal) - var(--spacing-sm)) !important;
        overflow-x: hidden !important;
        flex: none !important;
        display: block !important;
        justify-content: initial !important;
        padding: 0 !important;
        margin-top: 0 !important;
        margin-right: 0 !important;
        margin-bottom: 0 !important;
        left: 0 !important;
        right: auto !important;
        position: static !important;
        transform: none !important;
    }
    
    /* Ensure desktop content has proper positioning */
    .content {
        max-width: 720px !important;
        padding: var(--spacing-xl) var(--spacing-lg) !important;
        margin: 0 auto !important;
        width: auto !important;
        box-sizing: border-box !important;
        overflow-x: visible !important;
        position: static !important;
        transform: none !important;
        left: auto !important;
        right: auto !important;
    }
    
    /* Reset any mobile body changes */
    body {
        padding: var(--viewport-padding-vertical) var(--viewport-padding-horizontal) var(--viewport-padding-bottom) !important;
        margin: 0 !important;
        display: block !important;
        flex-direction: initial !important;
        width: auto !important;
        max-width: none !important;
        overflow-x: hidden !important;
    }
    
    /* Ensure desktop social links maintain fixed positioning */
    .social-links {
        position: fixed;
        bottom: var(--viewport-padding-bottom);
        right: calc(var(--viewport-padding-horizontal) + var(--spacing-lg));
        display: flex;
        gap: var(--spacing-md);
        align-items: center;
        justify-content: flex-end;
        z-index: 1000;
        overflow-x: visible;
        white-space: normal;
        padding-bottom: 0;
        margin-top: 0;
    }
}

/* Selection styles */
::selection {
    background: #e8e8e8;
    color: var(--dark-gray);
}

::-moz-selection {
    background: #e8e8e8;
    color: var(--dark-gray);
}

/* Focus styles for accessibility */
.nav-link:focus,
.project-link:focus,
.skill-tag:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Global Lowercase Styling */
body {
    text-transform: lowercase;
}

/* Preserve normal case for specific elements */
.social-link,
.contact-link {
    text-transform: none;
}

/* Simple Item Styles for Clean Pages */
.simple-item {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-gray);
}

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

.simple-item h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
}

.simple-item .meta {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.simple-item p:not(.meta) {
    font-size: var(--font-size-sm);
    color: var(--dark-gray);
    line-height: 1.6;
    margin: 0;
}

.simple-item strong,
.teaching-item strong {
    font-weight: 600 !important;
}

/* Teaching Timeline Styles */
.teaching-timeline {
    position: relative;
    margin-top: var(--spacing-md);
    padding-left: 1.5rem;
}

.teaching-timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 2px;
    height: calc(100% - 1rem);
    width: 1px;
    background: var(--border-gray);
}

.teaching-item {
    position: relative;
    margin-bottom: 1.5rem;
}

.teaching-item:last-child {
    margin-bottom: 0;
}

.teaching-item::before {
    content: '';
    position: absolute;
    left: -17px;
    top: 2px;
    width: 6px;
    height: 6px;
    background: var(--primary-white);
    border: 2px solid var(--accent-color);
    border-radius: 50%;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.teaching-item p {
    margin: 0;
    font-size: var(--font-size-sm);
    line-height: 1.6;
    color: var(--dark-gray);
}

/* Education List Styles (different from experience timeline) */
.education-list {
    margin-top: 1.5rem;
}

.education-list-item {
    margin-bottom: 1rem;
    padding-left: 1rem;
    border-left: 1px solid var(--border-gray);
}

.education-list-item:last-child {
    margin-bottom: 0;
}

.education-list-item p {
    margin: 0;
    font-size: var(--font-size-sm);
    line-height: 1.6;
    color: var(--dark-gray);
}

/* Experience Timeline Styles */
.experience-timeline {
    position: relative;
    padding-left: 1.5rem;
}

.experience-timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 2px;
    height: calc(100% - 1rem);
    width: 1px;
    background: var(--border-gray);
}

.experience-item {
    position: relative;
    margin-bottom: 3rem;
    display: flex;
    align-items: flex-start;
    gap: 2rem;
}

.experience-item:last-child {
    margin-bottom: 0;
}

.experience-item::before {
    content: '';
    position: absolute;
    left: -17px;
    top: 2px;
    width: 6px;
    height: 6px;
    background: var(--primary-white);
    border: 2px solid var(--accent-color);
    border-radius: 50%;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.experience-left {
    flex-shrink: 0;
    min-width: 200px;
}

.experience-right {
    flex: 1;
    padding-top: 2px;
}

.experience-item h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--dark-gray);
    margin: 0 0 0.25rem 0;
    line-height: 1.3;
    text-transform: lowercase;
}

.experience-item .company {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    margin: 0 0 0.25rem 0;
    text-transform: lowercase;
}

.experience-item .year {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    margin: 0 0 0.5rem 0;
}

.experience-item .description {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    margin: 0;
    line-height: 1.5;
    font-style: italic;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: var(--spacing-lg);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-gray);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-xl);
}

.timeline-marker {
    position: absolute;
    left: 16px;
    top: var(--spacing-lg);
    width: 10px;
    height: 10px;
    background: var(--accent-color);
    border-radius: 50%;
    z-index: 1;
}

.timeline-content {
    margin-left: 50px;
}

/* Education specific styles */
.education-card {
    border-left: 4px solid var(--accent-color);
}

.degree {
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-xs);
}

.gpa {
    font-size: var(--font-size-base);
    color: var(--accent-color);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.coursework {
    background: var(--light-gray);
    padding: var(--spacing-sm);
    border-radius: 4px;
    margin-bottom: var(--spacing-sm);
}

.coursework-title {
    font-weight: 500;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-xs);
}

.coursework-list {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    line-height: 1.5;
}