body {
    margin: 0;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: linear-gradient(135deg, #5c86f6, #af78f8);
    color: #ffffff;
}

.header-container {
    padding: 20px;
    background: linear-gradient(135deg, #2d3748, #1a1a1a);
    box-shadow: 0 4px 6px rgba(0,0,0,0.2);
    color: white;
    text-align: center;
}

.header-container h1 {
    color: #5c86f6;
    margin: 0;
    font-size: 2.5rem;
    letter-spacing: 2px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.nav-bar ul {
    list-style: none;
    padding: 0;
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 15px;
}

.nav-bar a {
    text-decoration: none;
    color: #a0aec0;
    padding: 8px 16px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.nav-bar a:hover {
    background: #5c86f6;
    color: white;
}

.nav-bar .active {
    background: #5c86f6;
    color: white;
    font-weight: bold;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}