:root {
            --black: #000000;
            --white: #ffffff;
            --gray: #f0f0f0;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'IBM Plex Sans', sans-serif;
            color: var(--black);
            background-color: var(--white);
            line-height: 1.6;
        }
        
        header {
            padding: 2rem;
            border-bottom: 1px solid var(--black);
        }
        
        h1 {
            font-weight: 600;
            font-size: 2.5rem;
            margin-bottom: 0.5rem;
        }
        
        .subtitle {
            font-weight: 300;
            font-size: 1.2rem;
        }
        
        nav {
            margin-top: 2rem;
        }
        
        nav ul {
            display: flex;
            list-style: none;
        }
        
        nav li {
            margin-right: 2rem;
        }
        
        nav a {
            text-decoration: none;
            color: var(--black);
            font-weight: 500;
            position: relative;
        }
        
        nav a:after {
            content: '';
            position: absolute;
            width: 0;
            height: 1px;
            bottom: -2px;
            left: 0;
            background-color: var(--black);
            transition: width 0.3s ease;
        }
        
        nav a:hover:after {
            width: 100%;
        }
        
        main {
            padding: 3rem 2rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        section {
            margin-bottom: 4rem;
        }
        
        h2 {
            font-weight: 600;
            font-size: 1.8rem;
            margin-bottom: 2rem;
            text-transform: uppercase;
        }
        
        .projects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 2rem;
        }
        
        .project-card {
            border: 1px solid var(--black);
            padding: 1.5rem;
            transition: transform 0.3s ease;
        }
        
        .project-card:hover {
            transform: translateY(-5px);
        }
        
        .project-title {
            font-weight: 600;
            font-size: 1.2rem;
            margin-bottom: 0.5rem;
        }
        
        .project-description {
            font-weight: 300;
            margin-bottom: 1rem;
        }
        
        .project-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        
        .project-tag {
            font-size: 0.8rem;
            padding: 0.2rem 0.5rem;
            background-color: var(--gray);
        }
        
        footer {
            padding: 2rem;
            text-align: center;
            border-top: 1px solid var(--black);
            font-weight: 300;
        }
        
        @media (max-width: 768px) {
            h1 {
                font-size: 2rem;
            }
            
            nav ul {
                flex-direction: column;
            }
            
            nav li {
                margin-right: 0;
                margin-bottom: 1rem;
            }
        }