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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f8f9fa;
}

header {
    background: #2c3e50;
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

header h1 {
    display: inline-block;
    margin-left: 2rem;
}

nav {
    float: right;
    margin-right: 2rem;
}

nav a {
    color: white;
    text-decoration: none;
    margin-left: 1rem;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background 0.3s;
}

nav a:hover {
    background: rgba(255,255,255,0.1);
}

main {
    margin-top: 80px;
    padding: 2rem;
}

.hero {
    text-align: center;
    padding: 4rem 0;
    background: white;
    border-radius: 8px;
    margin-bottom: 2rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.project-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

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

.btn {
    display: inline-block;
    background: #3498db;
    color: white;
    padding: 0.8rem 1.5rem;
    text-decoration: none;
    border-radius: 4px;
    margin-top: 1rem;
    transition: background 0.3s;
}

.btn:hover {
    background: #2980b9;
}

footer {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 4rem;
}