:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --text-color: #1f2937;
    --light-text: #6b7280;
    --background: #ffffff;
    --section-bg: #f3f4f6;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background);
}

/* Navbar Styles */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

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

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 2rem;
    background: linear-gradient(135deg, #f3f4f6 0%, #ffffff 100%);
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.hero-content h2 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.social-links {
    margin-top: 2rem;
}

.social-links a {
    color: var(--text-color);
    font-size: 1.5rem;
    margin: 0 1rem;
    transition: color 0.3s ease;
}

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

/* Section Styles */
section {
    padding: 5rem 2rem;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-color);
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: var(--primary-color);
}

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

.timeline-content {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    width: calc(50% - 2rem);
    margin-left: auto;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 0;
    margin-right: auto;
}

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

.timeline-content h4 {
    color: var(--light-text);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.date {
    color: var(--light-text);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

/* Projects Section */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.project-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
}

.project-tech {
    margin-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.project-tech span {
    background: var(--section-bg);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

/* Skills Section */
.skills-container {
    max-width: 800px;
    margin: 0 auto;
}

.skill-category {
    margin-bottom: 2rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
}

.skill-tags span {
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

/* Contact Section */
.contact {
    background: var(--section-bg);
    text-align: center;
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-button {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 1rem 2rem;
    border-radius: 30px;
    text-decoration: none;
    margin-top: 2rem;
    transition: background-color 0.3s ease;
}

.contact-button:hover {
    background: var(--secondary-color);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    background: var(--text-color);
    color: white;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out forwards;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .timeline::before {
        left: 0;
    }
    
    .timeline-content {
        width: calc(100% - 2rem);
        margin-left: 2rem;
    }
    
    .timeline-item:nth-child(even) .timeline-content {
        margin-left: 2rem;
    }
}