:root {
    --bg-primary: #0a0e14;
    --bg-secondary: #111820;
    --bg-tertiary: #1a222d;
    --accent-primary: #00d4aa;
    --accent-secondary: #0891b2;
    --accent-warning: #f59e0b;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #565d66;
    --border-color: #21262d;
    --glow-primary: rgba(0, 212, 170, 0.15);
    --glow-secondary: rgba(8, 145, 178, 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Default link styling - override browser defaults */
a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #00e6b8;
}

main {
    flex: 1;
}

/* Noise Overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
    z-index: 1000;
}

/* Grid Background */
.grid-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 212, 170, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 170, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: -1;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1rem 2rem;
    background: rgba(10, 14, 20, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo::before {
    content: '>';
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
    position: relative;
    padding: 0.25rem 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-primary);
    transition: width 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 5rem 2rem 5rem;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}

.hero-right {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: flex-start;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

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

.hero-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--accent-primary);
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 0.5rem;
}

.hero-affiliation {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 500px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    padding: 0.875rem 1.75rem;
    border-radius: 4px;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--accent-primary);
    color: var(--bg-primary);
    font-weight: 600;
}

.btn-primary:hover {
    background: #00e6b8;
    box-shadow: 0 0 30px var(--glow-primary);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

/* Terminal Card */
.terminal-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.terminal-header {
    background: var(--bg-tertiary);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.terminal-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-dot.red { background: #ff5f57; }
.terminal-dot.yellow { background: #febc2e; }
.terminal-dot.green { background: #28c840; }

.terminal-title {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: 0.5rem;
}

.terminal-body {
    padding: 1.5rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
}

.terminal-line {
    margin-bottom: 0.5rem;
    display: flex;
    gap: 0.5rem;
}

.terminal-prompt {
    color: var(--accent-primary);
}

.terminal-command {
    color: var(--text-primary);
}

.terminal-output {
    color: var(--text-secondary);
    padding-left: 1rem;
    border-left: 2px solid var(--border-color);
    margin: 0.5rem 0;
}

.terminal-highlight {
    color: var(--accent-warning);
}

/* Section Styles */

section {
    padding: 2rem 1rem;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    margin-bottom: 3rem;
}

.section-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--accent-primary);
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin-top: 1rem;
}

.section-desc a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.section-desc a:hover {
    color: #00e6b8;
}

/* Highlight Cards (Homepage) */
.highlights {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.highlight-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.highlight-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    position: relative;
}

.highlight-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.highlight-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
}

.highlight-card:hover::before {
    opacity: 1;
}

.highlight-number {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--accent-primary);
    margin-bottom: 1rem;
}

.highlight-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.highlight-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.highlight-link {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--accent-primary);
}

/* Page Header */
.page-header {
    padding: 10rem 2rem 4rem;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    border-bottom: 1px solid var(--border-color);
}

.page-header .section-container {
    max-width: 1200px;
}

/* Content Cards */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.content-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.content-card:hover {
    transform: translateY(-3px);
    border-color: var(--accent-primary);
}

.content-card-number {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-primary);
    background: var(--glow-primary);
    width: 45px;
    height: 45px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
}

.content-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
}

.content-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.content-card p a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.content-card p a:hover {
    color: #00e6b8;
}

.content-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1.25rem;
}

.tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    padding: 0.25rem 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-secondary);
}

/* Lab Cards */
.lab-card {
    display: block;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.75rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

.lab-card:hover {
    border-color: var(--accent-secondary);
    background: rgba(8, 145, 178, 0.05);
    transform: translateY(-3px);
}

.lab-card-category {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--accent-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
}

.lab-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.lab-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.lab-card-meta {
    display: flex;
    gap: 1.5rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Project Cards */
.project-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.project-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.project-card-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.project-card-header h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.project-card-header h3 a {
    color: inherit;
    text-decoration: none;
}

.project-card-header h3 a:hover {
    color: var(--accent-primary);
}

.project-card-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.project-card-body {
    padding: 1.5rem;
}

.project-card-stats {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.project-card-stats strong {
    color: var(--text-primary);
}

.project-card-langs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.lang-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    background: var(--bg-secondary);
    border-radius: 4px;
    color: var(--accent-primary);
}

/* Course Cards */
.course-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.course-card:hover {
    transform: translateY(-3px);
    border-color: var(--accent-primary);
}

.course-card-code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
}

.course-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.course-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.course-card a,
.course-card p a,
.course-outcomes a,
.course-outcomes li a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.course-card a:hover,
.course-card p a:hover,
.course-outcomes a:hover,
.course-outcomes li a:hover {
    color: #00e6b8;
}

.course-card-topics {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.topic-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    padding: 0.25rem 0.5rem;
    background: var(--bg-secondary);
    border-radius: 3px;
    color: var(--text-muted);
}

/* Contact Page */
.contact-content {
    max-width: 600px;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    text-decoration: none;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.contact-link:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateX(5px);
}

.contact-link svg {
    flex-shrink: 0;
}

/* Footer */
footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 2rem;
    margin-top: auto;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-content {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-tagline {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--accent-primary);
    margin-top: 0.25rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--accent-primary);
}

/* Profile Photo Styling */
.profile-photo {
    display: flex;
    align-items: center;
    justify-content: center;
}

.profile-photo img {
    max-width: 200px;
    max-height: 250px;
    width: auto;
    height: auto;
    object-fit: contain;
    object-position: center;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
}


/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Mobile Responsive */
@media (max-width: 900px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

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

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: 1rem 2rem;
        gap: 0;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        border-bottom: 1px solid var(--border-color);
    }

    .nav-links li:last-child {
        border-bottom: none;
    }

    .nav-links a {
        display: block;
        padding: 1rem 0;
    }

    .mobile-menu-btn {
        display: flex;
    }

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

@media (max-width: 600px) {
    section {
        padding: 3rem 1.5rem;
    }

    .hero {
        padding: 6rem 1.5rem 3rem;
    }

    .page-header {
        padding: 8rem 1.5rem 3rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .footer-container {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}