body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f9;
    color: #333;
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

header {
    background-color: #2c5f2d;
    color: white;
    text-align: center;
    padding: 3vh 1rem;
    flex: 0 0 auto;
}

.logo {
    max-width: 100%;
    width: 250px;
    max-height: 25vh;
    object-fit: contain;
    margin: 0 auto 1.5vh auto;
    display: block;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

main {
    padding: 2vh 1rem;
    text-align: center;
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

footer {
    text-align: center;
    padding: 2vh 1rem;
    background-color: #222;
    color: white;
    width: 100%;
    flex: 0 0 auto;
    box-sizing: border-box;
}

.email-btn {
    display: inline-block;
    background-color: #f4f4f9;
    color: #2c5f2d;
    padding: 10px 20px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 8px;
    margin-top: 15px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.email-btn:hover {
    background-color: #e0e0e8;
    color: #1a3c1b;
}

/* Responsive adjustments */
@media (max-width: 600px) {
    header {
        padding: 2vh 1rem;
    }
    .logo {
        width: 180px;
        max-height: 20vh;
    }
    header h1 {
        font-size: 1.8rem;
    }
    header p {
        font-size: 1rem;
    }
}