:root {
    /* Color Palette */
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #60a5fa;
    --secondary: #10b981;
    --secondary-dark: #059669;
    --dark: #0f172a;
    --dark-lighter: #1e293b;
    --gray-dark: #475569;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --gray-lighter: #e2e8f0;
    --gray-lightest: #f8fafc;
    --white: #ffffff;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

/* CSS Variables for Theming */
:root {
    /* Light mode colors (default) */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #495057;
    --text-tertiary: #6c757d;
    --border-color: #dee2e6;
    --link-color: #0066cc;
    --link-hover: #0052a3;
    --hero-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --card-bg: #ffffff;
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --code-bg: #f6f8fa;
    --code-text: #e36209;
    --btn-primary-bg: #0066cc;
    --btn-primary-hover: #0052a3;
    --btn-secondary-bg: transparent;
    --btn-secondary-border: #0066cc;
    --btn-secondary-text: #0066cc;
    --stat-card-bg: #ffffff;
    --timeline-line: #dee2e6;
    --timeline-marker: #0066cc;
    --badge-bg: #e9ecef;
    --badge-text: #495057;
}

[data-theme="dark"] {
    /* Dark mode colors */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --text-tertiary: #6e7681;
    --border-color: #30363d;
    --link-color: #58a6ff;
    --link-hover: #79c0ff;
    --hero-bg: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    --card-bg: #161b22;
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --code-bg: #161b22;
    --code-text: #ffa657;
    --btn-primary-bg: #238636;
    --btn-primary-hover: #2ea043;
    --btn-secondary-bg: transparent;
    --btn-secondary-border: #58a6ff;
    --btn-secondary-text: #58a6ff;
    --stat-card-bg: #161b22;
    --timeline-line: #30363d;
    --timeline-marker: #58a6ff;
    --badge-bg: #21262d;
    --badge-text: #8b949e;
}

/* Apply CSS variables to existing styles - update body and major containers */
body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* Add offset for sticky nav */
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--space-sm);
}

h1 { font-size: 3rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: var(--space-sm);
    color: var(--gray-dark);
}

.lead {
    font-size: 1.125rem;
    line-height: 1.75;
    color: var(--dark);
    margin-bottom: var(--space-md);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-lighter) 100%);
    color: var(--white);
    padding: var(--space-2xl) 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, var(--primary) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, var(--secondary) 0%, transparent 50%);
    opacity: 0.1;
}

.hero-content {
    position: relative;
    text-align: center;
    padding: var(--space-xl) 0;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    animation: fadeInUp 0.6s ease;
}

.hero-tagline {
    font-size: 1.25rem;
    font-weight: 300;
    color: var(--gray-lighter);
    margin-bottom: var(--space-md);
    animation: fadeInUp 0.6s ease 0.1s backwards;
}

.hero-meta {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    margin-bottom: var(--space-lg);
    animation: fadeInUp 0.6s ease 0.2s backwards;
}

.hero-meta span {
    color: var(--gray-light);
    font-size: 0.95rem;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    animation: fadeInUp 0.6s ease 0.3s backwards;
}

/* Hero Summary Section */
.hero-summary {
    max-width: 800px;
    margin: 1.5rem auto;
    padding: 1.25rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-summary p {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1.05rem;
    line-height: 1.7;
    margin: 0;
    text-align: center;
}

/* Navigation */
.main-nav {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(var(--bg-secondary-rgb, 248, 249, 250), 0.95);
}

/* Left Sidebar Navigation */
.side-nav {
    position: fixed;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: var(--card-bg);
    padding: 20px 12px;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.side-nav-link {
    position: relative;
    display: block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-tertiary);
    transition: all 0.3s ease;
    text-decoration: none;
}

.side-nav-link::before {
    content: attr(data-section);
    position: absolute;
    left: 25px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--card-bg);
    color: var(--text-primary);
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.side-nav-link:hover::before {
    opacity: 1;
    transform: translateY(-50%) translateX(8px);
}

.side-nav-link.active {
    background: var(--primary);
    transform: scale(1.3);
}

.side-nav-link:hover {
    background: var(--primary-light);
    transform: scale(1.2);
}

/* Hide side nav on mobile */
@media (max-width: 768px) {
    .side-nav {
        display: none;
    }
}

[data-theme="dark"] .main-nav {
    background-color: rgba(var(--bg-secondary-rgb, 22, 27, 34), 0.95);
}

.nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0.5rem;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    padding: 1rem 1.25rem;
    display: inline-block;
    position: relative;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 500;
    border-radius: 8px;
}

/* Hover effect with underline animation */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0.5rem;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--link-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-50%);
}

.nav-link:hover {
    color: var(--link-hover);
    background-color: rgba(var(--link-color-rgb, 0, 102, 204), 0.1);
    transform: translateY(-2px);
}

.nav-link:hover::after {
    width: calc(100% - 2.5rem);
}

/* Active state for current section */
.nav-link.active {
    color: var(--link-color);
    background-color: rgba(var(--link-color-rgb, 0, 102, 204), 0.15);
}

.nav-link.active::after {
    width: calc(100% - 2.5rem);
}

/* Special styling for back button */
.nav-link[href*="index.html"] {
    font-weight: 600;
    padding-left: 0.75rem;
}

.nav-link[href*="index.html"]:hover {
    transform: translateX(-4px);
}

/* Add RGB values for transparency calculations */
:root {
    --bg-secondary-rgb: 248, 249, 250;
    --link-color-rgb: 0, 102, 204;
}

[data-theme="dark"] {
    --bg-secondary-rgb: 22, 27, 34;
    --link-color-rgb: 88, 166, 255;
}

/* Sections */
.section {
    padding: var(--space-2xl) 0;
    position: relative; /* Ensure sections are positioned */
}

.section:target {
    padding-top: calc(var(--space-2xl) + 80px); /* Add extra padding when targeted */
    margin-top: -80px; /* Negative margin to offset the padding */
}

.section-alt {
    background: var(--gray-lightest);
}

/* About Me Section Specific Styles */
.about-section-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-content {
    margin-bottom: var(--space-xl);
}

.about-content .lead {
    font-size: 1.25rem;
    line-height: 1.7;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    font-weight: 500;
}

.about-content p {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.about-content strong {
    color: var(--primary);
    font-weight: 600;
}

/* Stats Grid for About Section */
.about-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.about-stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: var(--space-lg);
    border-radius: 12px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.about-stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.about-stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--space-xs);
    line-height: 1;
}

.about-stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

/* Legacy stats-grid support */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: var(--space-lg);
    border-radius: 12px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--space-xs);
    line-height: 1;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.section-cta {
    background: linear-gradient(135deg, #1a365d 0%, #2c5282 100%);
    color: rgba(255, 255, 255, 0.95);
    padding: 4rem 0;
    position: relative;
}

[data-theme="dark"] .section-cta {
    background: linear-gradient(135deg, #1a2c4c 0%, #2d3748 100%);
}

.section-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.15);
    pointer-events: none;
}

.section-cta .section-title {
    color: white;
    margin-bottom: 1.5rem;
    position: relative;
}

.contact-intro {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1.1rem;
    text-align: center;
    margin-bottom: 2.5rem;
    position: relative;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.contact-intro .inline-link {
    color: #67e8f9;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    border-bottom: 1px dashed rgba(255, 255, 255, 0.4);
    padding-bottom: 2px;
}

.contact-intro .inline-link:hover {
    color: white;
    border-bottom-color: white;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
    position: relative;
}

.service-item {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(5px);
    border-radius: 12px;
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.service-item:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-3px);
}

.service-icon {
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-item span:not(.service-icon) {
    color: white;
    font-size: 0.95rem;
    font-weight: 500;
}

.recommendation-box {
    background: rgba(255, 255, 255, 0.12);
    border-radius: 12px;
    padding: 1.75rem;
    margin: 2.5rem 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
}

.recommendation-text {
    color: white;
    font-size: 1rem;
    text-align: center;
    margin: 0;
    line-height: 1.7;
}

.recommendation-text strong {
    font-weight: 600;
    color: white;
    display: block;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.contact-cta {
    color: rgba(255, 255, 255, 0.9);
    text-align: center;
    margin-top: 2.5rem;
    font-size: 1.05rem;
    position: relative;
}

.cta-link {
    color: #67e8f9;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    border-bottom: 1px dashed rgba(255, 255, 255, 0.4);
    padding-bottom: 2px;
}

.cta-link:hover {
    color: white;
    border-bottom-color: white;
}

/* Mobile adjustments for contact section */
@media (max-width: 768px) {
    .section-cta {
        padding: 3rem 0;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .contact-intro {
        font-size: 1rem;
    }
    
    .recommendation-text {
        font-size: 0.95rem;
    }
    
    .service-item {
        padding: 1rem;
    }
}

/* Dark mode additional adjustments */
[data-theme="dark"] .service-item {
    background: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .service-item:hover {
    background: rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .recommendation-box {
    background: rgba(255, 255, 255, 0.08);
}

/* Dark mode link colors */
[data-theme="dark"] .contact-intro .inline-link,
[data-theme="dark"] .cta-link {
    color: #7dd3fc;
}

[data-theme="dark"] .contact-intro .inline-link:hover,
[data-theme="dark"] .cta-link:hover {
    color: white;
}

/* Updated Project Card Styles */
.project-card {
    display: flex;
    flex-direction: column;
    padding: 1.75rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s ease;
    text-decoration: none;
    color: var(--text-primary);
    height: 100%;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    border-color: var(--link-color);
}

.project-card p {
    color: var(--text-secondary);
    margin: 0.75rem 0;
    font-size: 0.95rem;
    line-height: 1.6;
}

.project-card p strong {
    color: var(--text-primary);
    font-weight: 600;
}

.project-features {
    list-style: none;
    padding: 0;
    margin: 0.75rem 0 1.25rem 0;
    flex-grow: 1;
}

.project-features li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.project-features li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--link-color);
    font-weight: bold;
}

.project-link {
    display: inline-flex;
    align-items: center;
    color: var(--link-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    margin-top: auto;
    transition: all 0.2s ease;
}

.project-link:hover {
    color: var(--link-hover);
    transform: translateX(4px);
}

/* Contact Icons Section */
.contact-icons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    margin: 3rem 0;
    padding: 2rem;
    background: var(--bg-secondary);
    border-radius: 16px;
    flex-wrap: wrap;
}

.contact-icon-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 1rem;
    border-radius: 12px;
}

.contact-icon-link:hover {
    transform: translateY(-4px);
    color: var(--link-color);
    background: rgba(var(--link-color-rgb), 0.1);
}

.contact-icon {
    width: 48px;
    height: 48px;
    transition: all 0.3s ease;
}

.contact-icon-link:hover .contact-icon {
    transform: scale(1.15);
}

.contact-icon-link span {
    font-size: 0.875rem;
    font-weight: 500;
    opacity: 0.9;
}

/* Social button cleanup - remove redundant social-links section */
.social-links {
    display: none;
}

/* Footer */
.site-footer {
    background-color: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
}

.footer-text {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
    font-weight: 400;
}

.footer-link {
    color: var(--link-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.footer-link:hover {
    color: var(--link-hover);
    text-decoration: underline;
}

/* Dark mode footer adjustments */
[data-theme="dark"] .site-footer {
    background-color: var(--bg-tertiary);
    border-top-color: var(--border-color);
}

[data-theme="dark"] .footer-text {
    color: var(--text-secondary);
}

/* Mobile responsive footer */
@media (max-width: 768px) {
    .site-footer {
        padding: 1.5rem 0;
        margin-top: 3rem;
    }
    
    .footer-text {
        font-size: 0.8125rem;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    html {
        scroll-padding-top: 60px; /* Smaller offset for mobile nav */
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-meta {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .hero-cta {
        flex-direction: column;
        width: 100%;
        padding: 0 var(--space-md);
    }
    
    .nav-list {
        flex-wrap: wrap;
    }
    
    .nav-link {
        padding: var(--space-sm) var(--space-md);
    }
    
    .expertise-grid {
        grid-template-columns: 1fr;
    }
    
    .expertise-card {
        padding: var(--space-md);
    }
    
    .job-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
    }
    
    .social-links {
        flex-wrap: wrap;
    }
    
    .timeline {
        padding-left: var(--space-md);
    }
    
    .timeline::before {
        left: 5px;
    }
    
    .timeline-marker {
        left: -1px;
    }
    
    .section:target {
        padding-top: calc(var(--space-2xl) + 60px);
        margin-top: -60px;
    }
    
    #contact {
        min-height: auto; /* Allow natural height on mobile */
        padding-bottom: var(--space-2xl); /* Extra padding at bottom */
    }
}

@media (max-width: 520px) {
    .expertise-grid {
        grid-template-columns: 1fr;
        gap: var (--space-md);
    }
    
    .expertise-card {
        padding: var(--space-md);
    }
    
    .tech-tags {
        gap: 6px;
    }
    
    .tech-tag {
        font-size: 0.75rem;
        padding: 3px 8px;
    }
    
    .section {
        padding: var(--space-xl) 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .project-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
}

/* Theme Toggle Button Styles */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 24px;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: var(--card-shadow);
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-toggle-icon {
    transition: transform 0.3s ease;
}

[data-theme="dark"] .theme-toggle-icon {
    transform: rotate(180deg);
}

/* Update navigation styles in dark mode */
.main-nav {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
}

.nav-link {
    color: var(--text-primary);
    transition: color 0.3s ease;
}

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

/* Update section backgrounds */
.section {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color 0.3s ease;
}

.section-alt {
    background-color: var(--bg-secondary);
}

/* Update card styles */
.project-card,
.expertise-card,
.case-study-card,
.stat-card,
.timeline-content,
.education-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
}

/* Update button styles */
.btn-primary {
    background-color: var(--btn-primary-bg);
    color: white;
}

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

.btn-secondary {
    background-color: var(--btn-secondary-bg);
    border: 2px solid var(--btn-secondary-border);
    color: var(--btn-secondary-text);
}

/* Update code blocks */
code,
pre {
    background-color: var(--code-bg);
    color: var(--code-text);
}

/* Update footer */
.site-footer {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
}

/* Update links globally */
a {
    color: var(--link-color);
}

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

/* Media query for mobile theme toggle position */
@media (max-width: 768px) {
    .theme-toggle {
        width: 45px;
        height: 45px;
        font-size: 20px;
    }
    
    .main-nav .container {
        position: relative;
    }
}

/* Smooth scroll behavior for anchor links */
html {
    scroll-behavior: smooth;
}

/* Add subtle animation to sections when they come into view */
.section {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Enhanced Education Section Styles */
.education-card {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
    max-width: 800px;
    margin: 0 auto;
}

.education-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: rgba(var(--link-color-rgb), 0.1);
    border-radius: 50%;
}

.education-content {
    flex-grow: 1;
    padding-right: 1rem;
}

.education-content h3 {
    font-size: 1.5rem;
    margin-top: 0;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.education-content p {
    margin: 0.25rem 0;
    color: var(--text-secondary);
}

.education-minor {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.5rem 0.75rem;
    background-color: rgba(var(--link-color-rgb), 0.1);
    color: var(--link-color);
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Remove previous education card styles that conflict with project-card */
.education-card,
.education-icon,
.education-content,
.education-date,
.education-focus,
.education-highlights {
    display: none;
}

.education-date {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    margin-bottom: 1rem !important;
}

.education-focus {
    margin: 1.25rem 0 0.5rem 0;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.education-highlights {
    list-style-type: disc;
    padding-left: 1.5rem;
    margin: 0.5rem 0 0 0;
}

.education-highlights li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Dark mode adjustments for education minor */
[data-theme="dark"] .education-minor {
    background-color: rgba(var(--link-color-rgb), 0.15);
}

/* Responsive adjustments for education section */
@media (max-width: 768px) {
    .education-card {
        flex-direction: column;
        padding: 1.5rem;
    }
    
    .education-icon {
        margin-bottom: 1rem;
    }
    
    .education-content {
        padding-right: 0;
    }
}

/* New Education Full-Width Layout */
.education-full-width {
    padding-bottom: var(--space-xxl); /* Ensure proper padding from footer */
}

.education-main-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.education-main-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.education-header {
    text-align: center;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-lg);
    border-bottom: 2px solid var(--border-color);
}

.education-header h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.education-header .degree-info {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.education-header .degree-date {
    color: var(--text-tertiary);
    font-size: 1rem;
}

.education-coursework {
    margin-top: var(--space-lg);
}

.education-coursework h4 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    font-weight: 600;
    text-align: center;
}

.coursework-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.coursework-grid ul {
    list-style-type: disc;
    padding-left: var(--space-md);
    margin: 0;
}

.coursework-grid li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Dark mode adjustments for new education layout */
[data-theme="dark"] .education-main-card {
    background: var(--card-bg);
    border-color: var(--border-color);
}

/* Responsive adjustments for new education layout */
@media (max-width: 768px) {
    .education-main-card {
        padding: var(--space-lg);
    }
    
    .education-header h3 {
        font-size: 1.3rem;
    }
    
    .coursework-grid {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }
}

@media (max-width: 520px) {
    .education-main-card {
        padding: var(--space-md);
    }
    
    .education-header {
        margin-bottom: var(--space-lg);
        padding-bottom: var(--space-md);
    }
    
    .education-header h3 {
        font-size: 1.2rem;
    }
    
    .education-header .degree-info {
        font-size: 1rem;
    }
}

/* Timeline Styles for Experience Section */
.timeline {
    position: relative;
    padding-left: var(--space-xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--timeline-line);
}

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

.timeline-marker {
    position: absolute;
    left: -25px;
    top: 5px;
    width: 12px;
    height: 12px;
    background: var(--timeline-marker);
    border: 3px solid var(--card-bg);
    border-radius: 50%;
    box-shadow: var(--shadow);
}

.timeline-content {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: var(--space-lg);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.job-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xs);
}

.job-header h3 {
    color: var(--primary);
    margin: 0;
    font-size: 1.5rem;
}

.job-title {
    background: var(--bg-secondary);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.job-date {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--space-md);
    font-style: italic;
}

.job-achievements {
    list-style: none;
    padding: 0;
    margin: 0;
}

.job-achievements li {
    padding: var(--space-xs) 0;
    padding-left: var(--space-md);
    position: relative;
    color: var(--text-secondary);
    line-height: 1.6;
}

.job-achievements li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--secondary);
    font-weight: bold;
}

.job-achievements li strong {
    color: var(--primary);
    font-weight: 600;
}

/* Responsive Timeline Styles */
@media (max-width: 768px) {
    .timeline {
        padding-left: var(--space-md);
    }
    
    .timeline::before {
        left: 5px;
    }
    
    .timeline-marker {
        left: -1px;
    }
    
    .job-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
    }
}

/* Ensure consistent card styling */
#experience .project-card .project-icon,
#education .project-card .project-icon {
    font-size: 1.75rem;
}

/* Ensure section backgrounds are consistent */
.section {
    padding: 4rem 0;
}

.section-alt {
    background-color: var(--bg-secondary);
}

/* Consistent grid appearance */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

@media (max-width: 768px) {
    .project-grid {
        grid-template-columns: 1fr;
    }
}