* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 5px;
    color: #555;
    font-weight: bold;
}

input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

input:focus {
    outline: none;
    border-color: #4CAF50;
    box-shadow: 0 0 5px rgba(76,175,80,0.2);
}

button {
    background-color: #4CAF50;
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    width: 100%;
    font-size: 16px;
    font-weight: bold;
    margin-top: 20px;
}

button:hover {
    background-color: #45a049;
}

.error-message {
    color: #ff0000;
    font-size: 14px;
    margin-top: 5px;
    display: block;
}

.mensaje-exito {
    display: none;
    background-color: #4CAF50;
    color: white;
    padding: 15px;
    border-radius: 5px;
    text-align: center;
    margin-top: 20px;
    font-weight: bold;
}

.mensaje-exito.mostrar {
    display: block;
}

@media (max-width: 600px) {
    .container {
        padding: 15px;
    }
    
    input {
        font-size: 14px;
    }
    
    button {
        padding: 10px 20px;
    }
}