/* ===== VARIABLES ===== */
:root {
    /* Scientific/Radar Color Palette */
    --primary: #00d4ff;
    --primary-dark: #0099cc;
    --primary-light: #66e5ff;
    --secondary: #1a5fb4;
    --accent: #00ff88;
    --success: #00ff88;
    --warning: #ffcc00;
    --danger: #ff4444;
    
    /* Dark Scientific Background */
    --bg-primary: #0a0e17;
    --bg-secondary: #0d1525;
    --bg-tertiary: #162033;
    --bg-grid: rgba(0, 212, 255, 0.03);
    --text-primary: #e8f4f8;
    --text-secondary: #a8c5d4;
    --text-muted: #6b8a9a;
    
    /* Radar-inspired Gradients */
    --gradient-1: linear-gradient(135deg, var(--primary), var(--secondary));
    --gradient-2: linear-gradient(135deg, var(--accent), var(--primary));
    --gradient-3: linear-gradient(180deg, rgba(0, 212, 255, 0.1) 0%, transparent 100%);
    --gradient-radar: conic-gradient(from 0deg, transparent, var(--primary), transparent);
    
    /* Glow Effects */
    --glow-primary: 0 0 20px rgba(0, 212, 255, 0.3);
    --glow-accent: 0 0 20px rgba(0, 255, 136, 0.3);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius: 8px;
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'JetBrains Mono', 'Fira Code', 'Inter', -apple-system, BlinkMacSystemFont, monospace;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Scientific Grid Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: -1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 14, 23, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 212, 255, 0.2);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.nav-brand h2 {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.5rem;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: -1px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    box-shadow: var(--glow-primary);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary);
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 3px;
    transition: var(--transition);
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem 0 4rem;
    position: relative;
    overflow: hidden;
}

/* Radar Sweep Animation */
.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 800px;
    height: 800px;
    transform: translate(-50%, -50%);
    background: conic-gradient(from 0deg, transparent 0deg, rgba(0, 212, 255, 0.06) 30deg, transparent 60deg);
    border-radius: 50%;
    animation: radarSweep 4s linear infinite;
    pointer-events: none;
}

/* Radar Rings */
.hero::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 600px;
    height: 600px;
    transform: translate(-50%, -50%);
    border: 1px solid rgba(0, 212, 255, 0.07);
    border-radius: 50%;
    box-shadow: 
        0 0 0 100px transparent,
        0 0 0 200px rgba(0, 212, 255, 0.035),
        0 0 0 300px transparent,
        0 0 0 400px rgba(0, 212, 255, 0.02);
    pointer-events: none;
}

@keyframes radarSweep {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    font-family: 'JetBrains Mono', monospace;
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.btn {
    padding: 0.875rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: var(--shadow-md);
}

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

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

.btn-secondary:hover {
    background: var(--primary);
    transform: translateY(-2px);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 1.25rem;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--gradient-1);
    color: white;
    transform: translateY(-3px);
}

.floating-card {
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.code-block {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl), var(--glow-primary);
    overflow: hidden;
    border: 1px solid rgba(0, 212, 255, 0.3);
}

.code-block.scientific {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    border: 1px solid rgba(0, 212, 255, 0.4);
}

.code-header {
    background: rgba(0, 0, 0, 0.4);
    padding: 0.75rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(0, 212, 255, 0.2);
}

.terminal-title {
    color: var(--primary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    letter-spacing: 0.5px;
}

.header-dots {
    display: flex;
    gap: 0.5rem;
}

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

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.code-content {
    padding: 1.5rem;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.8rem;
    line-height: 1.9;
}

/* Scientific Code Syntax Colors */
.keyword { color: #ff79c6; }
.variable { color: #00d4ff; }
.property { color: #8be9fd; }
.string { color: #00ff88; }
.comment { color: #6272a4; font-style: italic; }
.function { color: #50fa7b; }
.number { color: #bd93f9; }

.hero-scroll {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.hero-scroll a {
    color: var(--primary);
    font-size: 2rem;
    text-decoration: none;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ===== MATHEMATICAL FOUNDATIONS BANNER ===== */
.math-banner {
    background: var(--bg-tertiary);
    padding: 1.5rem 0;
    border-top: 1px solid rgba(0, 212, 255, 0.1);
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
    overflow: hidden;
}

.equations-marquee {
    display: flex;
    gap: 3rem;
    justify-content: center;
    flex-wrap: wrap;
}

.equation-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem 1.5rem;
    background: rgba(0, 212, 255, 0.05);
    border-radius: 8px;
    border: 1px solid rgba(0, 212, 255, 0.15);
}

.eq-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

.eq-formula {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    color: var(--primary);
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

/* ===== SECTIONS ===== */
section {
    padding: 5rem 0;
    position: relative;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: -1px;
}

/* Scientific Section Decorator */
.section-title::before {
    content: '// ';
    color: var(--text-muted);
    font-size: 1.5rem;
    -webkit-text-fill-color: var(--text-muted);
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 3rem;
    font-size: 1rem;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.5px;
    line-height: 1.7;
    max-width: 72ch;
    margin-left: auto;
    margin-right: auto;
}

/* ===== ABOUT SECTION ===== */
.about {
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-text {
    font-size: 1.05rem;
}

.about-text .lead {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    border-left: 3px solid var(--primary);
    padding-left: 1rem;
    line-height: 1.75;
    max-width: 72ch;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--text-muted);
    line-height: 1.8;
    max-width: 72ch;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.stat {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    border: 1px solid rgba(0, 212, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.stat::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-1);
}

.stat h3 {
    font-size: 2.5rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    font-family: 'JetBrains Mono', monospace;
}

.stat p {
    color: var(--text-muted);
    font-size: 0.8rem;
    font-family: 'JetBrains Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.about-image {
    display: flex;
    justify-content: center;
}

/* Profile with Radar Rings Effect */
.profile-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.radar-rings {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(0, 212, 255, 0.3);
    animation: ring-pulse 3s ease-out infinite;
}

.ring-1 {
    inset: -20px;
    animation-delay: 0s;
}

.ring-2 {
    inset: -40px;
    animation-delay: 1s;
}

.ring-3 {
    inset: -60px;
    animation-delay: 2s;
}

@keyframes ring-pulse {
    0% {
        opacity: 1;
        transform: scale(1);
    }
    100% {
        opacity: 0;
        transform: scale(1.3);
    }
}

.image-placeholder {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--primary);
    box-shadow: var(--glow-primary), var(--shadow-xl);
    position: relative;
}

/* Radar ring effect around image */
.image-placeholder::before {
    content: '';
    position: absolute;
    inset: -15px;
    border-radius: 50%;
    border: 1px solid rgba(0, 212, 255, 0.3);
    animation: radar-pulse 2s ease-out infinite;
}

.image-placeholder::after {
    content: '';
    position: absolute;
    inset: -30px;
    border-radius: 50%;
    border: 1px solid rgba(0, 212, 255, 0.2);
    animation: radar-pulse 2s ease-out infinite 0.5s;
}

@keyframes radar-pulse {
    0% { opacity: 1; transform: scale(1); }
    100% { opacity: 0; transform: scale(1.2); }
}

.image-placeholder i {
    font-size: 8rem;
    color: var(--primary);
    margin-bottom: 1rem;
    text-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
}

.image-placeholder p {
    color: var(--text-muted);
    font-size: 0.8rem;
    font-family: 'JetBrains Mono', monospace;
}

/* ===== PROJECTS SECTION ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
}

.project-card.featured {
    grid-column: 1 / -1;
    grid-template-columns: 1fr 1fr;
}

.project-card:not(.featured) {
    grid-template-columns: 1fr;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl), var(--glow-primary);
    border-color: var(--primary);
}

.project-image {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Grid pattern for project image background */
.project-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.05) 1px, transparent 1px);
    background-size: 20px 20px;
    pointer-events: none;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.image-fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    position: relative;
    z-index: 1;
}

.image-fallback i {
    font-size: 4rem;
    color: var(--primary);
    text-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 212, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-primary);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: var(--transition);
    border: 1px solid var(--primary);
}

.project-link:hover {
    transform: scale(1.1);
    background: var(--primary);
    color: var(--bg-primary);
    box-shadow: var(--glow-primary);
}

.project-content {
    padding: 2rem;
    display: flex;
    flex-direction: column;
}

.project-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: transparent;
    color: var(--primary);
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    width: fit-content;
    margin-bottom: 1rem;
    border: 1px solid var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-family: 'JetBrains Mono', monospace;
}

.project-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
}

.project-content > p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.7;
    font-size: 0.95rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tech-tag {
    padding: 0.3rem 0.75rem;
    background: transparent;
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--primary);
    border: 1px solid rgba(0, 212, 255, 0.3);
    font-family: 'JetBrains Mono', monospace;
    transition: var(--transition);
}

.tech-tag:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--primary);
    box-shadow: var(--glow-primary);
}

.project-actions {
    margin-top: auto;
    padding-top: 1.5rem;
    display: flex;
    gap: 1rem;
}

.btn-project {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
    border-radius: var(--border-radius);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
    transition: var(--transition);
}

.btn-project:hover {
    background: var(--primary);
    color: var(--bg-primary);
    box-shadow: var(--glow-primary);
    transform: translateY(-2px);
}

.btn-project i {
    font-size: 1rem;
}

.project-features ul {
    list-style: none;
    display: grid;
    gap: 0.75rem;
}

.project-features li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: var(--text-muted);
}

.project-features i {
    color: var(--success);
    margin-top: 0.25rem;
}

/* ===== RESEARCH EXPERIENCE SECTION ===== */
.research {
    background: var(--bg-primary);
}

.timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary), transparent);
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: 3rem;
}

.timeline-dot {
    position: absolute;
    left: 11px;
    top: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--bg-primary);
    border: 2px solid var(--primary);
    z-index: 1;
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.4);
}

/* Pulsing dot animation */
.timeline-dot::before {
    content: '';
    position: absolute;
    inset: 3px;
    border-radius: 50%;
    background: var(--primary);
    animation: dot-pulse 2s ease-in-out infinite;
}

@keyframes dot-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.timeline-content {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(0, 212, 255, 0.2);
    transition: var(--transition);
    position: relative;
}

.timeline-content::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--gradient-1);
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.timeline-content:hover {
    border-color: var(--primary);
    box-shadow: var(--glow-primary), var(--shadow-lg);
    transform: translateX(5px);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.timeline-header h3 {
    font-size: 1.35rem;
    color: var(--text-primary);
    margin: 0;
    font-family: 'JetBrains Mono', monospace;
}

.timeline-date {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 4px;
    border: 1px solid rgba(0, 212, 255, 0.3);
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.5px;
}

.timeline-content h4 {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.research-highlights {
    list-style: none;
    margin-bottom: 1.5rem;
}

.research-highlights li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-muted);
    line-height: 1.75;
}

.research-highlights li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

.research-highlights strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 0.25rem;
}

.research-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.research-tech .tech-tag {
    padding: 0.375rem 0.875rem;
    background: transparent;
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--primary);
    border: 1px solid rgba(0, 212, 255, 0.3);
    font-family: 'JetBrains Mono', monospace;
}

/* ===== SKILLS SECTION ===== */
.skills {
    background: var(--bg-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.skill-category {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

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

.category-icon {
    width: 60px;
    height: 60px;
    border-radius: 8px;
    background: transparent;
    border: 1px solid var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    color: var(--primary);
    position: relative;
}

.category-icon::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 10px;
    background: var(--gradient-1);
    opacity: 0.1;
    z-index: -1;
}

.skill-category h3 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    padding: 0.4rem 0.9rem;
    background: transparent;
    border-radius: 4px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: var(--transition);
    font-family: 'JetBrains Mono', monospace;
}

.skill-tag:hover {
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--glow-primary);
}

/* ===== CONTACT SECTION ===== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.contact-icon {
    width: 50px;
    height: 50px;
    border-radius: 8px;
    background: transparent;
    border: 1px solid var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.25rem;
    color: var(--primary);
}

.contact-details h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.contact-details a,
.contact-details p {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
}

.contact-details a:hover {
    color: var(--primary);
}

.contact-form-container {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(0, 212, 255, 0.2);
    position: relative;
}

.contact-form-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-weight: 500;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    background: var(--bg-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1), var(--glow-primary);
}

.form-group textarea {
    resize: vertical;
}

.contact-form button {
    width: 100%;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--bg-secondary);
    padding: 2rem 0;
    border-top: 1px solid rgba(0, 212, 255, 0.2);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-content p {
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
}

.footer-links {
    display: flex;
    gap: 1rem;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 1.25rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
    transform: translateY(-2px);
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        display: none;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        order: 2;
    }
    
    .hero-image {
        order: 1;
        margin-bottom: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .project-card,
    .project-card.featured {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 10px;
    }
    
    .timeline-item {
        padding-left: 40px;
    }
    
    .timeline-dot {
        left: 1px;
        width: 18px;
        height: 18px;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.875rem;
    }
}