:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-primary: #3b82f6;
    --accent-secondary: #8b5cf6;
    --gradient-main: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --nav-height: 70px;
    --container-width: 1200px;
    --font-main: 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;
}

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

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

.cursor-glow {
    position: fixed;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, rgba(0, 0, 0, 0) 70%);
    border-radius: 50%;
    pointer-events: none;
    transform: translate(-50%, -50%);
    z-index: 9999;
    mix-blend-mode: screen;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

/* Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 100px 0;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 60px;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-main);
    border-radius: 2px;
}

.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary {
    background: var(--gradient-main);
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.6);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--accent-primary);
    color: var(--text-primary);
    margin-left: 15px;
}

.btn-secondary:hover {
    background: rgba(59, 130, 246, 0.1);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
}

.logo span {
    color: var(--accent-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-secondary);
}

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

.nav-links .btn-primary.small {
    padding: 8px 20px;
    color: white;
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: var(--nav-height);
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 50px;
}

.hero-content .badge {
    display: inline-block;
    padding: 6px 12px;
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-primary);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.hero-content h1 {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 20px;
}

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

.hero-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
    max-width: 500px;
}

/* Hero Visual (Abstract Graph) */
.hero-visual {
    position: relative;
    height: 400px;
    width: 100%;
}

.graph-node {
    position: absolute;
    border-radius: 50%;
    background: var(--gradient-main);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.5);
    animation: float 6s ease-in-out infinite;
}

.node-1 { width: 60px; height: 60px; top: 20%; left: 20%; animation-delay: 0s; }
.node-2 { width: 80px; height: 80px; top: 50%; left: 60%; animation-delay: 2s; }
.node-3 { width: 40px; height: 40px; top: 70%; left: 30%; animation-delay: 4s; }

.connection {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    height: 2px;
    transform-origin: left center;
}

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

/* About Section */
.about-content {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
}

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

/* Experience Section */
.experience-category {
    margin-bottom: 60px;
}

.experience-category h3 {
    font-size: 1.5rem;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
}

.experience-category h3 i {
    color: var(--accent-secondary);
}

.timeline {
    position: relative;
    padding-left: 30px;
    border-left: 2px solid rgba(255, 255, 255, 0.1);
}

.timeline-item {
    margin-bottom: 40px;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -36px;
    top: 5px;
    width: 14px;
    height: 14px;
    background: var(--bg-color);
    border: 2px solid var(--accent-primary);
    border-radius: 50%;
}

.timeline-date {
    font-size: 0.9rem;
    color: var(--accent-primary);
    margin-bottom: 5px;
    font-weight: 600;
}

.timeline-content h4 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.timeline-content .company {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 10px;
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.skill-card {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.3s;
}

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

.skill-card i {
    font-size: 2rem;
    color: var(--accent-primary);
    margin-bottom: 20px;
}

.skill-card h3 {
    margin-bottom: 20px;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tags span {
    background: rgba(255, 255, 255, 0.05);
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Footer */
footer {
    background: #020617;
    padding: 60px 0 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

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

.footer-left h2 {
    font-family: var(--font-heading);
    margin-bottom: 15px;
}

.social-links {
    display: flex;
    gap: 20px;
    margin-top: 20px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 1.2rem;
    transition: all 0.3s;
}

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

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

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .menu-toggle {
        display: block;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-btns {
        justify-content: center;
    }

    .hero-visual {
        display: none;
    }

    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 30px;
    }
}