body {
    display: grid;
    grid-template-columns: auto 200px; 
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
    background-color: #f4f6f4; 
    color: #2b2b2b;          
    line-height: 1.6;      
}


header {
    grid-column: 1 / 3;
    grid-row: 1;
    background-color: #008000; 
    color: #ffffff;        
    text-align: center;
    padding: 30px 10px;       
}

header h1 {
    margin: 0;
    font-size: 2.5rem;         
    letter-spacing: 1px;      
}


section {
    grid-column: 1 / 2;
    grid-row: 2;
    padding: 40px;            
    background-color: #ffffff; 
    border-radius: 8px;        
    margin: 20px;              
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05); 
}


section p {
    margin-bottom: 20px;      
    font-size: 1.1rem;
}


nav {
    grid-column: 2 / 3;
    grid-row: 2;
    background-color: #008000; 
    padding: 20px 10px;
    margin-top: 20px;          
    margin-bottom: 20px;
    margin-right: 20px;
    border-radius: 8px;        
}


nav a {
    display: block;            
    color: #ffffff;
    text-decoration: none;     
    padding: 12px 15px;        
    margin-bottom: 8px;        
    border-radius: 4px;        
    font-weight: 600;
    transition: background 0.3s; 
}


nav a:hover {
    background-color: #40916c; 
}


footer {
    grid-column: 1 / 3;
    grid-row: 3;
    text-align: center;
    padding: 15px;
    background-color: #008000; 
    color: #b7e4c7;            
    font-size: 0.9rem;
}