:root {
    --color-bg: #0a0e14;
    --color-surface: #141922;
    --color-surface-light: #1d2433;
    --color-text: #e6eaf0;
    --color-text-muted: #8b95a8;
    --color-accent: #4fb3d4;
    --color-accent-bright: #6dd4f5;
    --color-accent-warm: #f4a261;
    --color-accent-green: #2a9d8f;
    --font-display: 'DM Serif Display', serif;
    --font-body: 'Work Sans', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

.grain-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='4' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    animation: grainShift 8s steps(10) infinite;
}

@keyframes grainShift {
    0%, 100% { transform: translate(0, 0); }
    10% { transform: translate(-5%, -10%); }
    20% { transform: translate(-15%, 5%); }
    30% { transform: translate(7%, -25%); }
    40% { transform: translate(-5%, 25%); }
    50% { transform: translate(-15%, 10%); }
    60% { transform: translate(15%, 0%); }
    70% { transform: translate(0%, 15%); }
    80% { transform: translate(3%, 35%); }
    90% { transform: translate(-10%, 10%); }
}

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

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 20, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(79, 179, 212, 0.1);
    animation: slideDown 0.6s ease-out;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-accent-bright);
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-link {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width 0.3s ease;
}

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

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

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(79, 179, 212, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(42, 157, 143, 0.06) 0%, transparent 50%);
}

.hero-background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(135deg, transparent 0%, rgba(79, 179, 212, 0.03) 50%, transparent 100%);
    animation: heroGlow 15s ease-in-out infinite alternate;
}

@keyframes heroGlow {
    0% { opacity: 0.3; }
    100% { opacity: 0.7; }
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    background: rgba(79, 179, 212, 0.1);
    border: 1px solid rgba(79, 179, 212, 0.3);
    padding: 0.5rem 1.2rem;
    border-radius: 50px;
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3.5rem, 10vw, 7rem);
    line-height: 1.1;
    font-weight: 400;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
}

.title-line {
    display: block;
    animation: fadeInUp 0.8s ease-out both;
}

.title-line:nth-child(1) {
    animation-delay: 0.3s;
    color: var(--color-text);
}

.title-line:nth-child(2) {
    animation-delay: 0.4s;
    background: linear-gradient(135deg, var(--color-accent-bright), var(--color-accent-green));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    max-width: 700px;
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease-out 0.5s both;
}

.hero-location {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.hero-location svg {
    color: var(--color-accent);
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.7s both;
}

.btn {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 1rem 2rem;
    border-radius: 4px;
    text-decoration: none;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--color-accent-bright);
    transition: left 0.3s ease;
    z-index: -1;
}

.btn-primary:hover::before {
    left: 0;
}

.btn-primary:hover {
    border-color: var(--color-accent-bright);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(79, 179, 212, 0.3);
}

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

.btn-secondary:hover {
    background: var(--color-surface-light);
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

/* Section Styles */
.section {
    padding: 8rem 0;
    position: relative;
}

.section-header {
    margin-bottom: 4rem;
    text-align: center;
}

.section-label {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.2;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

/* About Section */
.about-section {
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface) 50%, var(--color-bg) 100%);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-content p {
    margin-bottom: 1.5rem;
    color: var(--color-text-muted);
    font-size: 1.05rem;
}

.lead-text {
    font-size: 1.3rem !important;
    color: var(--color-text) !important;
    line-height: 1.6;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.stat-card {
    background: var(--color-surface-light);
    border: 1px solid rgba(79, 179, 212, 0.2);
    padding: 2rem 1.5rem;
    border-radius: 8px;
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent);
    box-shadow: 0 10px 30px rgba(79, 179, 212, 0.2);
}

.stat-number {
    font-family: var(--font-display);
    font-size: 3rem;
    color: var(--color-accent-bright);
    margin-bottom: 0.5rem;
    line-height: 1;
}

.stat-label {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
}

/* Expertise Section */
.expertise-section {
    background: var(--color-bg);
}

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

.expertise-card {
    background: var(--color-surface);
    border: 1px solid rgba(79, 179, 212, 0.15);
    padding: 2.5rem;
    border-radius: 12px;
    transition: var(--transition);
}

.expertise-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-accent);
    box-shadow: 0 15px 40px rgba(79, 179, 212, 0.15);
}

.expertise-icon {
    width: 60px;
    height: 60px;
    background: rgba(79, 179, 212, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.expertise-icon svg {
    color: var(--color-accent-bright);
}

.expertise-card h3 {
    font-family: var(--font-display);
    font-size: 1.6rem;
    color: var(--color-text);
    margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
}

.expertise-card ul {
    list-style: none;
}

.expertise-card li {
    color: var(--color-text-muted);
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    position: relative;
    font-size: 0.95rem;
}

.expertise-card li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: bold;
}

/* Experience Section */
.experience-section {
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface) 100%);
}

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

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

.timeline-item {
    position: relative;
    padding-left: 4rem;
    margin-bottom: 4rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 8px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-accent);
    border: 3px solid var(--color-bg);
    box-shadow: 0 0 0 4px rgba(79, 179, 212, 0.2);
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.8rem;
}

.timeline-content {
    background: var(--color-surface-light);
    border: 1px solid rgba(79, 179, 212, 0.2);
    padding: 2rem;
    border-radius: 12px;
    transition: var(--transition);
}

.timeline-content:hover {
    border-color: var(--color-accent);
    transform: translateX(10px);
}

.timeline-company {
    font-family: var(--font-display);
    font-size: 1.8rem;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.timeline-role {
    font-size: 1.2rem;
    color: var(--color-accent-bright);
    margin-bottom: 0.5rem;
}

.timeline-location {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

.timeline-achievements {
    list-style: none;
    margin-top: 1.5rem;
}

.timeline-achievements li {
    color: var(--color-text-muted);
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
}

.timeline-achievements li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: bold;
}

.timeline-highlight {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: rgba(79, 179, 212, 0.08);
    border-left: 3px solid var(--color-accent);
    border-radius: 4px;
}

.timeline-highlight strong {
    color: var(--color-accent-bright);
}

/* Certifications Section */
.certifications-section {
    background: var(--color-bg);
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.cert-card {
    background: var(--color-surface);
    border: 1px solid rgba(79, 179, 212, 0.15);
    padding: 2rem;
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.cert-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-green));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.cert-card:hover::before {
    transform: scaleX(1);
}

.cert-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent);
    box-shadow: 0 10px 30px rgba(79, 179, 212, 0.15);
}

.cert-card.featured {
    background: linear-gradient(135deg, rgba(79, 179, 212, 0.1), rgba(42, 157, 143, 0.1));
    border-color: var(--color-accent);
}

.cert-badge {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent);
    background: rgba(79, 179, 212, 0.15);
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 1rem;
}

.cert-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.cert-subtitle,
.cert-code {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* Contact Section */
.contact-section {
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface) 100%);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
}

.contact-intro {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--color-surface-light);
    border: 1px solid rgba(79, 179, 212, 0.15);
    border-radius: 8px;
    text-decoration: none;
    transition: var(--transition);
}

.contact-item:hover {
    border-color: var(--color-accent);
    transform: translateX(10px);
    box-shadow: 0 8px 25px rgba(79, 179, 212, 0.15);
}

.contact-item svg {
    flex-shrink: 0;
    color: var(--color-accent);
}

.contact-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-bottom: 0.3rem;
}

.contact-value {
    font-size: 1.05rem;
    color: var(--color-text);
}

.education-card {
    background: var(--color-surface-light);
    border: 1px solid rgba(79, 179, 212, 0.2);
    padding: 2.5rem;
    border-radius: 12px;
    height: fit-content;
}

.education-card h3 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    color: var(--color-text);
    margin-bottom: 1.5rem;
}

.education-degree {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-accent-bright);
    margin-bottom: 0.8rem;
}

.education-major {
    color: var(--color-text-muted);
    margin-bottom: 1rem;
}

.education-school {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* Footer */
.footer {
    background: var(--color-surface);
    border-top: 1px solid rgba(79, 179, 212, 0.15);
    padding: 3rem 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

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

.footer-links {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* Responsive Design */
@media (max-width: 968px) {
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .expertise-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        display: none;
    }
}

@media (max-width: 640px) {
    .section {
        padding: 4rem 0;
    }
    
    .hero {
        min-height: 90vh;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline-item {
        padding-left: 3rem;
    }
    
    .timeline::before {
        left: 0;
    }
    
    .certifications-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

/* Scroll animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease-out both;
}