:root {
    --bg-color: #0a0a0a;
    --card-bg: #161616;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent-primary: #00f2ff;
    /* Cyan */
    --accent-secondary: #bd00ff;
    /* Purple */
    --gradient-main: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --spacing-container: 1200px;
    --transition-fast: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-primary);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-main);
    border-radius: 2px;
}

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

/* Layout */
.container {
    max-width: var(--spacing-container);
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 5rem 0;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: -1px;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-fast);
}

.nav-links a:hover {
    color: var(--text-primary);
    text-shadow: 0 0 10px rgba(0, 242, 255, 0.5);
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 2rem;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 800px;
    text-align: center;
    z-index: 2;
}

.eyebrow {
    font-size: 1.2rem;
    color: var(--accent-primary);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.headline {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.bio {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-fast);
}

.primary-btn {
    background: var(--gradient-main);
    color: #fff;
    box-shadow: 0 0 20px rgba(0, 242, 255, 0.3);
}

.primary-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 30px rgba(0, 242, 255, 0.5);
}

.secondary-btn {
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.hero-visual {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.4;
    pointer-events: none;
}

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

.skill-category {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-fast);
}

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

.skill-category h3 {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-primary);
}

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

.tags span {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Experience Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 2px;
    background: rgba(255, 255, 255, 0.1);
}

.timeline-item {
    margin-bottom: 3rem;
    padding-left: 2rem;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 0;
    width: 14px;
    height: 14px;
    background: var(--accent-secondary);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-secondary);
}

.timeline-date {
    font-size: 0.9rem;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.timeline-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.2rem;
}

.timeline-content h4 {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 1rem;
}

.timeline-content ul {
    list-style-position: inside;
    color: var(--text-secondary);
}

.timeline-content li {
    margin-bottom: 0.5rem;
}

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

.project-card {
    background: var(--card-bg);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-fast);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.project-content {
    padding: 2rem;
}

.project-tech {
    color: var(--accent-primary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.project-content h3 {
    margin-bottom: 1rem;
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Grid 3 for Leadership */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.card h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.card h4 {
    color: var(--accent-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

/* Awards */
.awards-list {
    list-style: none;
    max-width: 800px;
    margin: 0 auto;
}

.awards-list li {
    background: var(--card-bg);
    margin-bottom: 1rem;
    padding: 1.5rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-fast);
}

.awards-list li:hover {
    border-color: var(--accent-primary);
    transform: translateX(10px);
}

.award-icon {
    font-size: 1.5rem;
}

/* Footer */
footer {
    background: #000;
    padding: 5rem 0 2rem;
    text-align: center;
    margin-top: 5rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin: 2rem 0;
}

.social-links a {
    color: var(--text-primary);
    font-size: 1.5rem;
    transition: var(--transition-fast);
}

.social-links a:hover {
    color: var(--accent-primary);
    transform: scale(1.2);
}

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

/* Cursor Glow */
.cursor-glow {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 242, 255, 0.15), transparent 70%);
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: transform 0.1s ease;
    mix-blend-mode: screen;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .headline {
        font-size: 2.5rem;
    }

    .nav-links {
        display: none;
    }

    .hamburger {
        display: block;
    }

    .timeline::before {
        left: 0;
    }
}

/* Advanced Animations */

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--gradient-main);
    width: 0%;
    z-index: 1001;
    box-shadow: 0 0 10px var(--accent-primary);
}

/* Typing Effect Cursor */
.typing-cursor::after {
    content: '|';
    animation: blink 1s step-start infinite;
    color: var(--accent-primary);
}

@keyframes blink {
    50% {
        opacity: 0;
    }
}

/* 3D Tilt Effect */
.tilt-card {
    transform-style: preserve-3d;
    transform: perspective(1000px);
}

.tilt-content {
    transform: translateZ(20px);
}

/* Staggered Animation Delays */
.fade-in-section.visible .skill-category:nth-child(1) {
    transition-delay: 0.1s;
}

.fade-in-section.visible .skill-category:nth-child(2) {
    transition-delay: 0.2s;
}

.fade-in-section.visible .skill-category:nth-child(3) {
    transition-delay: 0.3s;
}

.fade-in-section.visible .skill-category:nth-child(4) {
    transition-delay: 0.4s;
}

.fade-in-section.visible .project-card:nth-child(1) {
    transition-delay: 0.1s;
}

.fade-in-section.visible .project-card:nth-child(2) {
    transition-delay: 0.3s;
}

.fade-in-section.visible .card:nth-child(1) {
    transition-delay: 0.1s;
}

.fade-in-section.visible .card:nth-child(2) {
    transition-delay: 0.2s;
}

.fade-in-section.visible .card:nth-child(3) {
    transition-delay: 0.3s;
}

/* Base Fade In */
.fade-in-section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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