:root {
    --color-red: rgb(255, 89, 89);
    --color-white: rgb(255, 251, 236);
    --color-dark: rgb(31, 31, 31);
}

body {
    background: var(--color-white);
    color: var(--color-dark);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

form#loginForm {
    background: var(--color-white);
    padding: 30px 40px;
    border-radius: 12px;
    box-shadow: 8 8px 24px rgba(31, 31, 31, 0.1);
    width: 100%;
    max-width: 380px;
    text-align: center;
}

form#loginForm h1 {
    margin-bottom: 24px;
    font-weight: 700;
    font-size: 2.3rem;
    color: var(--color-dark);
}

form#loginForm input[type="text"],
form#loginForm input[type="password"] {
    width: 90%;
    padding: 12px 14px;
    margin-bottom: 18px;
    border-radius: 8px;
    border: 1.5px solid var(--color-dark);
    font-size: 1rem;
    background: var(--color-white);
    color: var(--color-dark);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

form#loginForm input[type="text"]:focus,
form#loginForm input[type="password"]:focus {
    border-color: var(--color-red);
    outline: none;
    box-shadow: 0 0 6px var(--color-red);
}

#mensagem {
    min-height: 24px;
    margin-bottom: 18px;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 6px;
    padding: 10px;
    color: var(--color-white);
}

#envia {
    width: 90%;
    padding: 14px;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-white);
    background: var(--color-dark);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    user-select: none;
}

#envia:hover {background: var(--color-red);}
#envia:active {background: rgb(200, 60, 60);}

#mensagem.error {background-color: var(--color-red); display: block;}

#mensagem.success {background-color: var(--color-dark);display: block;}

@media (max-width: 400px) {
    form#loginForm {
        padding: 20px 25px;
    }
}