* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Poppins', sans-serif;
    background-color: #ffffff;
    color: #333;
}

.wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    max-width: 500px;
    margin: auto;
    padding: 20px;
    text-align: center;
}

.logo {
    width: 150px;
    margin-bottom: 20px;
}

h1 {
    font-size: 18px;
    margin-bottom: 30px;
}

form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

input[type="text"] {
    padding: 12px;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 10px;
    text-align: center;
}

button {
    background-color: #6b9b1c;
    color: white;
    border: none;
    padding: 14px;
    font-size: 16px;
    border-radius: 10px;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #558113;
}

.resultado {
    margin-top: 25px;
    font-size: 18px;
    font-weight: 600;
}

.valido {
    background-color: #e6f4ea;
    padding: 15px;
    color: #2e7d32;
    border: 2px solid #81c784;
    border-radius: 10px;
}

.invalido {
    background-color: #fdecea;
    padding: 15px;
    color: #c62828;
    border: 2px solid #ef9a9a;
    border-radius: 10px;
}

footer {
    text-align: center;
    background-color: #fdf52b;
    padding: 10px;
    font-size: 14px;
    margin-top: auto;
}