:root {
    --primary-color: #2d3436;
    --secondary-color: #0984e3;
    --light-bg: #f5f6fa;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', sans-serif;
}

body {
    line-height: 1.6;
    color: var(--primary-color);
}

.navbar {
    padding: 1rem 5%;
    background: white;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
}

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

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

.hero {
    padding: 8rem 5% 4rem;
    background: var(--light-bg);
    text-align: center;
}

.section {
    padding: 4rem 5%;
}

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

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

.project-card {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.tech-pill {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: var(--light-bg);
    border-radius: 20px;
    font-size: 0.9rem;
    margin: 0.5rem 0.3rem;
}

.timeline-item {
    border-left: 2px solid var(--secondary-color);
    padding-left: 2rem;
    margin-bottom: 2rem;
    position: relative;
}

.timeline-item::before {
    content: '';
    width: 15px;
    height: 15px;
    background: var(--secondary-color);
    position: absolute;
    left: -8.5px;
    top: 0;
    border-radius: 50%;
}

footer {
    background: var(--primary-color);
    color: white;
    text-align: center;
    padding: 2rem 5%;
}

.repo-link {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.5rem 1rem;
    background: var(--secondary-color);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.repo-link:hover {
    background: #0767b2;
    transform: translateY(-2px);
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}