body {
    background: url("../img/arenal-lake.png") no-repeat center center fixed;
    background-size: cover;
    background-color: #EBF5EC; 
}

.register-container {
    background: rgba(255, 255, 255, 0.9);
    padding: 20px;
    border-radius: 15px;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    margin: 100px auto;
}

h2 {
    text-align: center;
    margin-bottom: 20px;
    font-weight: 600;
    color: #333;
}

.btn-register {
    background-color: #4CAF50;
    color: white;
    font-weight: bold;
    border-radius: 25px;
    padding: 12px;
    font-size: 1rem;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.btn-register:hover {
    background-color: #3B8B3B;
    transform: scale(1.05);
}

p {
    text-align: center;
    margin-top: 15px;
    font-size: 0.9rem;
}

p a {
    color: #4CAF50;
    text-decoration: none;
    font-weight: 500;
}

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

.success-message {
    background-color: rgba(76, 175, 80, 0.1);
    border: 1px solid #4CAF50;
    border-radius: 8px;
    color: #4CAF50;
    padding: 10px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    display: none;
}