:root {
    
    --dark-bg: #112626;           
    --dark-bg-card: #193333;      
    --dark-text-primary: #F0F0F0; 
    --dark-text-secondary: #C5C5C5; 
    --dark-accent: #9D3C3C;       
    --dark-accent-hover: #B25050; /
    --dark-tag-bg: rgba(157, 60, 60, 0.12); 
    --dark-border: rgba(157, 60, 60, 0.25); /* Softer borders */
    --dark-shadow: rgba(0, 0, 0, 0.25);     /* Less harsh shadows */
    --dark-gold: #D2B48C;        
    --dark-rgb-accent: 157, 60, 60;
    --dark-section-bg: rgba(220, 220, 220, 0.1); /* Light gray section background like in screenshot */
    
   
    --light-bg: #F9F9F9;
    --light-bg-card: #FFFFFF;
    --light-text-primary: #0F172A;
    --light-text-secondary: #4B5563;
    --light-accent: #1E3A8A;
    --light-accent-hover: #2563EB;
    --light-tag-bg: rgba(30, 58, 138, 0.15); /* Increased opacity for better readability */
    --light-border: rgba(30, 58, 138, 0.3);
    --light-shadow: rgba(0, 0, 0, 0.1);
    --light-cream: #F5F5DC;
    --light-rgb-accent: 30, 58, 138;
    --light-section-bg: rgba(240, 240, 245, 0.5); /* Light section background for light mode */
    
    /* Shared Variables */
    --transition-speed: 0.3s;
    --border-radius: 12px;
    --container-width: min(1200px, 90%);
    --header-height: 80px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    
    /* Set Default Theme (Dark) */
    --bg: var(--dark-bg);
    --bg-card: var(--dark-bg-card);
    --text-primary: var(--dark-text-primary);
    --text-secondary: var(--dark-text-secondary);
    --accent: var(--dark-accent);
    --accent-hover: var(--dark-accent-hover);
    --tag-bg: var(--dark-tag-bg);
    --border: var(--dark-border);
    --shadow: var(--dark-shadow);
    --highlight: var(--dark-gold);
    --rgb-accent: var(--dark-rgb-accent);
    --section-bg: var(--dark-section-bg);
}

/* Light Mode Override */
body.light-mode {
    --bg: var(--light-bg);
    --bg-card: var(--light-bg-card);
    --text-primary: var(--light-text-primary);
    --text-secondary: var(--light-text-secondary);
    --accent: var(--light-accent);
    --accent-hover: var(--light-accent-hover);
    --tag-bg: var(--light-tag-bg);
    --border: var(--light-border);
    --shadow: var(--light-shadow);
    --highlight: var(--light-cream);
    --rgb-accent: var(--light-rgb-accent);
    --section-bg: var(--light-section-bg);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg);
    color: var(--text-primary);
    line-height: 1.6;
    letter-spacing: -0.011em;
    transition: background-color var(--transition-speed) ease,
                color var(--transition-speed) ease;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
}

h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    letter-spacing: -0.02em;
    color: var(--accent);
}

h3 {
    font-size: clamp(1.2rem, 2vw, 1.8rem);
    letter-spacing: -0.01em;
}

p {
    margin-bottom: var(--spacing-sm);
    max-width: 65ch;
}

/* Scroll Progress Indicator */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 3px;
    background-color: var(--accent);
    z-index: 1000;
    transition: width 0.1s ease;
}

/* Navigation */
.top-nav {
    position: sticky;
    top: 0;
    width: 100%;
    height: var(--header-height);
    background-color: var(--bg);
    border-bottom: 1px solid var(--border);
    z-index: 100;
    transition: background-color var(--transition-speed) ease,
                border-color var(--transition-speed) ease;
}

.nav-container {
    width: var(--container-width);
    margin: 0 auto;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    font-weight: 500;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent);
    transition: width var(--transition-speed) ease;
}

.nav-link:hover::after {
    width: 100%;
}

#theme-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-speed) ease,
                color var(--transition-speed) ease;
}

#theme-toggle:hover {
    background-color: var(--tag-bg);
    color: var(--accent);
}

/* Hero Section */
.hero {
    padding-top: var(--spacing-lg);
    width: 100%;
}

.hero-container {
    width: var(--container-width);
    margin: 0 auto;
}

.hero-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
}

.hero-text-wrapper {
    max-width: 600px;
}

.hero-text-wrapper h1 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    position: relative;
    display: inline-block;
}

.hero-text-wrapper h1::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 80%;
    height: 3px;
    background-color: var(--accent);
}

.hero-text-wrapper h2 {
    margin-top: 1rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}


.headshot-container {
    flex-shrink: 0;
    margin-left: var(--spacing-lg);
}

.headshot {
    width: 240px;
    height: 240px;
    border-radius: var(--border-radius); /* Squared with rounded corners */
    object-fit: cover;
    object-position: center 10%; /* Adjusted to show full head - moved up */
    border: 3px solid var(--accent);
    box-shadow: 0 10px 30px var(--shadow);
    transition: transform var(--transition-speed) ease,
                border-color var(--transition-speed) ease;
}

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


.hero-image-wrapper {
    width: 100%;
    max-width: 1000px; /* Added max-width to make image smaller */
    margin: 0 auto;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-image {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px var(--shadow);
    transition: transform var(--transition-speed) ease, filter var(--transition-speed) ease;
    position: relative;
    transform: scale(0.85); 
}

/* Cinematic vignette effect */
.hero-image-wrapper::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--border-radius);
    box-shadow: inset 0 0 100px rgba(0, 0, 0, 0.6);
    pointer-events: none;
}


.dark-mode .hero-image {
    filter: brightness(0.8) sepia(0.3) saturate(0.8) hue-rotate(145deg) contrast(1.1);
}

/* Image Overlay for Light Mode */
.light-mode .hero-image {
    filter: brightness(1.05) sepia(0.2) saturate(0.9) hue-rotate(190deg) contrast(1.05);
}

/* Social Links */
.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.social-links a {
    font-size: 1.5rem;
    color: var(--text-secondary);
    transition: color var(--transition-speed) ease,
                transform var(--transition-speed) ease;
}

.social-links a:hover {
    color: var(--accent);
    transform: translateY(-3px);
}

/* Main Content */
main {
    width: var(--container-width);
    margin: 0 auto;
    padding-bottom: var(--spacing-lg);
}

/* Section Styling - Updated to match screenshot */
.section-container {
    margin-bottom: var(--spacing-xl);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    background-color: var(--section-bg); /* Using variable for section background */
}

.section-container.visible {
    opacity: 1;
    transform: translateY(0);
}

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

.section-header h2 {
    position: relative;
    display: inline-block;
    margin-bottom: var(--spacing-sm);
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--accent);
}

.section-content {
    max-width: 800px;
}

/* Experience Cards */
.experience-card {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border);
}

.experience-year {
    font-weight: 500;
    color: var(--text-secondary);
}

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

.experience-details h3 {
    color: var(--accent);
    margin-bottom: var(--spacing-xs);
}

/* Project Cards Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.project-card {
    background-color: var(--bg-card);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 5px 15px var(--shadow);
    transition: transform var(--transition-speed) ease,
                box-shadow var(--transition-speed) ease;
    padding: var(--spacing-md);
    border: 1px solid var(--border);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px var(--shadow);
}

.project-image-container {
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
    border-radius: calc(var(--border-radius) - 4px);
}

.project-image-container img {
    width: 100%;
    height: auto;
    aspect-ratio: 16/9;
    object-fit: cover;
    transition: transform var(--transition-speed) ease;
}

/* Refined Project Image Overlay for Dark Mode - Matching Hero Image Style */
.dark-mode .project-image-container img {
    filter: brightness(0.8) sepia(0.25) saturate(0.85) hue-rotate(145deg);
}

/* Project Image Overlay for Light Mode */
.light-mode .project-image-container img {
    filter: brightness(1.05) sepia(0.15) saturate(0.95) hue-rotate(190deg);
}

.project-card:hover .project-image-container img {
    transform: scale(1.05);
}

.project-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    flex-grow: 1;
}

.project-details h3 {
    color: var(--accent);
}

.project-details p {
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    text-overflow: ellipsis;
    overflow: hidden;
    transition: all var(--transition-speed) ease;
    line-height: 1.7; /* Improved line height for readability */
}

.project-card:hover .project-details p {
    -webkit-line-clamp: 6;
    animation: expandText 0.3s ease-out forwards;
}

@keyframes expandText {
    from {
        max-height: 4.8em;
        overflow: hidden;
    }
    to {
        max-height: 20em;
        overflow: auto;
    }
}

/* Tags - Improved for better light mode readability */
.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: var(--spacing-xs);
}

.tag {
    background-color: var(--tag-bg);
    color: var(--accent);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600; /* Increased font weight for better readability */
    transition: background-color var(--transition-speed) ease,
                transform var(--transition-speed) ease;
}

/* Improved Tag Colors for Dark Mode */
.dark-mode .tag {
    color: var(--dark-gold);
    background-color: rgba(50, 50, 50, 0.4); /* Darker background for better contrast */
}

/* Improved Tag Colors for Light Mode */
.light-mode .tag {
    color: var(--light-accent);
    background-color: rgba(30, 58, 138, 0.12); /* Adjusted for better visibility */
    border: 1px solid rgba(30, 58, 138, 0.2); /* Added border for definition */
}

.tag:hover {
    background-color: rgba(var(--rgb-accent), 0.25);
    transform: scale(1.05);
}

.dark-mode .tag:hover {
    background-color: rgba(157, 60, 60, 0.25);
}

.light-mode .tag:hover {
    background-color: rgba(30, 58, 138, 0.2);
}

/* Project Links */
.project-links {
    display: flex;
    gap: var(--spacing-md);
    margin-top: auto;
    padding-top: var(--spacing-sm);
}

.project-link {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--accent);
    transition: color var(--transition-speed) ease;
}

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


.view-resume,
.view-all-projects {
    display: inline-block;
    margin-top: var(--spacing-md);
    font-weight: 500;
    color: var(--accent);
    transition: color var(--transition-speed) ease,
                transform var(--transition-speed) ease;
}

.view-resume:hover,
.view-all-projects:hover {
    color: var(--accent-hover);
    transform: translateX(5px);
}

.view-resume i,
.view-all-projects i {
    margin-left: 0.25rem;
    transition: transform var(--transition-speed) ease;
}

.view-resume:hover i,
.view-all-projects:hover i {
    transform: translateX(3px);
}

/* Link Accent */
.link-accent {
    color: var(--accent);
    font-weight: 500;
    transition: color var(--transition-speed) ease;
}

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

/* Contact Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 600px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    padding: 0.75rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border);
    background-color: var(--bg-card);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    resize: vertical;
    transition: border-color var(--transition-speed) ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.form-group textarea {
    min-height: 150px;
}

.submit-button {
    align-self: flex-start;
    background-color: var(--accent);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: background-color var(--transition-speed) ease,
                transform var(--transition-speed) ease;
}

.submit-button:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
}


footer {
    background-color: var(--bg-card);
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--border);
    margin-top: var(--spacing-xl);
}

.footer-content {
    width: var(--container-width);
    margin: 0 auto;
    text-align: center;
    color: var(--text-secondary);
    position: relative;
}

.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background-color: var(--accent);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-speed) ease,
                transform var(--transition-speed) ease,
                background-color var(--transition-speed) ease;
    z-index: 90;
}

.scroll-to-top.visible {
    opacity: 1;
    transform: translateY(0);
}

.scroll-to-top:hover {
    background-color: var(--accent-hover);
}


@media (max-width: 768px) {
    .hero-content {
        flex-direction: column-reverse;
        align-items: center;
        text-align: center;
    }
    
    .hero-text-wrapper {
        margin-top: var(--spacing-md);
    }
    
    .hero-text-wrapper h1::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .headshot-container {
        margin-left: 0;
    }
    
    .experience-card {
        grid-template-columns: 1fr;
        gap: var(--spacing-xs);
    }
    
    .experience-year {
        margin-bottom: var(--spacing-xs);
    }
    
    .nav-links {
        display: none;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }
    
    .hero-image-wrapper {
        margin-top: var(--spacing-md);
    }
    
    .headshot {
        width: 180px;
        height: 180px;
    }
    
    .project-links {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
}


.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

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

/* Theme Transition */
.theme-transition {
    transition: background-color 0.5s ease,
                color 0.5s ease,
                border-color 0.5s ease,
                box-shadow 0.5s ease;
}

/*  grain overlay */
.dark-mode .hero-image-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIzMDAiIGhlaWdodD0iMzAwIj48ZmlsdGVyIGlkPSJhIiB4PSIwIiB5PSIwIj48ZmVUdXJidWxlbmNlIGJhc2VGcmVxdWVuY3k9Ii43NSIgc3RpdGNoVGlsZXM9InN0aXRjaCIgdHlwZT0iZnJhY3RhbE5vaXNlIi8+PGZlQ29sb3JNYXRyaXggdHlwZT0ic2F0dXJhdGUiIHZhbHVlcz0iMCIvPjwvZmlsdGVyPjxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbHRlcj0idXJsKCNhKSIgb3BhY2l0eT0iLjA1Ii8+PC9zdmc+');
    opacity: 0.1;
    border-radius: var(--border-radius);
    pointer-events: none;
    mix-blend-mode: overlay;
}

/* For screen readers */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}
/* Blog-specific styles */
.article-container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-md) 0;
}

.article-header h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    position: relative;
    display: inline-block;
}

.article-header h1::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--accent);
}

.article-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    color: var(--text-secondary);
}

.article-content {
    line-height: 1.8;
}

.article-content h2 {
    margin: var(--spacing-lg) 0 var(--spacing-sm);
    font-size: 1.8rem;
    color: var(--accent);
}

.article-content h3 {
    margin: var(--spacing-md) 0 var(--spacing-sm);
    font-size: 1.5rem;
}

.article-content h4 {
    margin: var(--spacing-sm) 0;
    font-size: 1.2rem;
}

.article-content p {
    margin-bottom: var(--spacing-md);
}

.article-content ul {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-md);
}

.article-content li {
    margin-bottom: var(--spacing-xs);
}

.article-content pre {
    background-color: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    overflow-x: auto;
    margin-bottom: var(--spacing-md);
}

.article-content code {
    font-family: monospace;
}

.article-footer {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border);
}

.back-to-blog {
    display: inline-flex;
    align-items: center;
    font-weight: 500;
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition-speed) ease, transform var(--transition-speed) ease;
    background: none;
    border: 1px solid var(--border);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
}

.back-to-blog:hover {
    color: var(--accent-hover);
    transform: translateX(-5px);
    background-color: var(--tag-bg);
}

.back-to-blog i {
    margin-right: 0.5rem;
}


.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background-color: var(--bg);
        flex-direction: column;
        padding: 1rem 0;
        border-bottom: 1px solid var(--border);
        z-index: 99;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links a {
        padding: 0.75rem 2rem;
        width: 100%;
        text-align: left;
    }
    
    .mobile-nav-toggle {
        display: block;
    }
    
    .article-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
}