* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #f1f5f9;
    font-family: Arial, sans-serif;
}

.caixa {
    background: white;
    width: 90%;
    max-width: 400px;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 20px #00000015;
}

h1 {
    text-align: center;
    color: #1e293b;
}

label {
    display: block;
    margin-top: 15px;
    margin-bottom: 6px;
}

input {
    width: 100%;
    padding: 12px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
}

button {
    width: 100%;
    padding: 12px;
    margin-top: 20px;
    border: none;
    border-radius: 6px;
    background: #2563eb;
    color: white;
    cursor: pointer;
}

button:hover {
    background: #1d4ed8;
}

a {
    color: #2563eb;
}