/* Global Styles */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    margin: 0;
    color: #333;
    background-color: #f4f4f9;
}

header {
    background: #2563eb;
    color: white;
    padding: 1rem 0;
    text-align: center;
}

nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    background: #1e40af;
    padding: 10px;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

nav a:hover {
    text-decoration: underline;
}

.container {
    max-width: 800px;
    margin: 40px auto;
    padding: 20px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.btn {
    display: inline-block;
    background: #2563eb;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 20px;
    transition: background-color 0.2s;
}

.btn:hover {
    background: #1d4ed8;
}

footer {
    text-align: center;
    margin-top: 50px;
    padding: 20px;
    font-size: 0.9rem;
    color: #666;
}