:root {
    /* Color Palette - Technical Dark Theme */
    --color-bg: #0a0e14;
    --color-bg-secondary: #111822;
    --color-bg-elevated: #1a2332;
    --color-surface: #1e2936;
    --color-border: #2a3847;
    --color-text-primary: #e6edf3;
    --color-text-secondary: #8b949e;
    --color-text-tertiary: #6e7681;
    --color-accent: #58a6ff;
    --color-accent-dim: #1f6feb;
    --color-success: #3fb950;
    --color-warning: #d29922;
    --color-highlight: #ffd60a;
    
    /* Typography */
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    --font-serif: 'Crimson Pro', Georgia, serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-mono);
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text-primary);
    background: var(--color-bg);
    overflow-x: hidden;
}

::selection {
    background: var(--color-accent);
    color: var(--color-bg);
}

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

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-bottom: 1px solid var(--color-border);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.03;
    background-image: 
        repeating-linear-gradient(0deg, transparent, transparent 2px, var(--color-accent) 2px, var(--color-accent) 3px),
        repeating-linear-gradient(90deg, transparent, transparent 2px, var(--color-accent) 2px, var(--color-accent) 3px);
    background-size: 50px 50px;
    animation: grid-flow 20s linear infinite;
}

@keyframes grid-flow {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(50px, 50px);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    animation: fade-in-up 1s var(--transition-slow) backwards;
}

.name {
    font-family: var(--font-serif);
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--color-text-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.contact-links {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.link-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.link-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--color-accent-dim), transparent);
    transition: left var(--transition-slow);
}

.link-item:hover::before {
    left: 100%;
}

.link-item:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: translateY(-2px);
}

.link-item .icon {
    font-weight: 700;
    font-size: 1rem;
}

/* Section Styles */
section {
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid var(--color-border);
}

.section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.section-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-accent);
    opacity: 0.3;
    font-family: var(--font-serif);
}

.section-header h2 {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 600;
    color: var(--color-text-primary);
}

/* About Section */
.about {
    background: var(--color-bg-secondary);
}

.about-content {
    max-width: 900px;
}

.lead {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    font-family: var(--font-serif);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.skill-category h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.tag {
    padding: 0.4rem 0.8rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.tag:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: translateY(-1px);
}

/* Experience Section */
.timeline {
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--color-accent), transparent);
}

.timeline-item {
    position: relative;
    padding-left: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
}

.timeline-marker {
    position: absolute;
    left: -6px;
    top: 8px;
    width: 14px;
    height: 14px;
    background: var(--color-accent);
    border: 3px solid var(--color-bg);
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--color-accent-dim);
}

.timeline-content {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-md);
    transition: all var(--transition-base);
}

.timeline-content:hover {
    border-color: var(--color-accent);
    transform: translateX(4px);
}

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

.job-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-primary);
    font-family: var(--font-serif);
}

.job-header h4 {
    font-size: 1.1rem;
    color: var(--color-accent);
    font-weight: 400;
}

.date {
    font-size: 0.9rem;
    color: var(--color-text-tertiary);
    padding: 0.3rem 0.8rem;
    background: var(--color-surface);
    border-radius: 4px;
    white-space: nowrap;
}

.achievements {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.achievement h5 {
    font-size: 1rem;
    color: var(--color-success);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.achievement p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.achievement strong {
    color: var(--color-highlight);
    font-weight: 600;
}

/* Projects Section */
.projects {
    background: var(--color-bg-secondary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

.project-card {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-md);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(88, 166, 255, 0.1);
}

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

.project-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-text-primary);
    font-family: var(--font-serif);
}

.project-badge {
    padding: 0.3rem 0.8rem;
    background: var(--color-success);
    color: var(--color-bg);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

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

.project-link {
    padding: 0.4rem 0.8rem;
    background: var(--color-accent-dim);
    color: var(--color-text-primary);
    text-decoration: none;
    border-radius: 4px;
    font-size: 0.85rem;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

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

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.tech {
    padding: 0.3rem 0.6rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 3px;
    font-size: 0.8rem;
    color: var(--color-text-tertiary);
}

.project-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
    flex-grow: 1;
}

.project-description strong {
    color: var(--color-highlight);
    font-weight: 600;
}

.project-highlights {
    list-style: none;
    padding-left: 0;
}

.project-highlights li {
    padding-left: 1.5rem;
    position: relative;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
    line-height: 1.6;
}

.project-highlights li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 700;
}

/* Education Section */
.education-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.education-card {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-left: 3px solid var(--color-accent);
    border-radius: 8px;
    padding: var(--spacing-md);
    transition: all var(--transition-base);
}

.education-card:hover {
    border-left-color: var(--color-success);
    transform: translateX(4px);
}

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

.education-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-text-primary);
    font-family: var(--font-serif);
}

.education-header h4 {
    font-size: 1rem;
    color: var(--color-accent);
    font-weight: 400;
}

.degree-class {
    color: var(--color-text-secondary);
    font-weight: 600;
}

.modules {
    color: var(--color-text-secondary);
}

.modules strong {
    color: var(--color-text-primary);
}

.modules ul {
    margin-top: var(--spacing-xs);
    padding-left: var(--spacing-md);
}

.modules li {
    margin-bottom: 0.3rem;
}

/* Leadership Section */
.leadership {
    background: var(--color-bg-secondary);
}

.leadership-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.leadership-card {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-md);
    transition: all var(--transition-base);
}

.leadership-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.leadership-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 0.3rem;
    font-family: var(--font-serif);
}

.leadership-card h4 {
    font-size: 1rem;
    color: var(--color-accent);
    font-weight: 400;
    margin-bottom: var(--spacing-xs);
}

.leadership-card .date {
    display: inline-block;
    margin-bottom: var(--spacing-sm);
}

.leadership-card p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* Footer */
footer {
    padding: var(--spacing-lg) 0;
    text-align: center;
    color: var(--color-text-tertiary);
    border-top: 1px solid var(--color-border);
}

footer p {
    font-size: 0.9rem;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    .hero {
        min-height: 80vh;
    }
    
    .section-number {
        font-size: 2rem;
    }
    
    .projects-grid,
    .leadership-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .job-header,
    .education-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .timeline::before {
        left: 0;
    }
    
    .timeline-item {
        padding-left: var(--spacing-md);
    }
    
    .contact-links {
        flex-direction: column;
        align-items: stretch;
    }
    
    .link-item {
        justify-content: center;
    }
}

/* Print Styles */
@media print {
    body {
        background: white;
        color: black;
    }
    
    .hero-bg {
        display: none;
    }
    
    section {
        page-break-inside: avoid;
    }
}