.ac-niv {
    font-family: inherit;
    max-width: 800px;
    margin: 0 auto;
}

/* Contato */
.ac-niv__contato-titulo {
    margin-bottom: 16px;
    font-size: 1rem;
}

.ac-niv__contato-campos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

/* Float label input */
.ac-niv__campo {
    position: relative;
}

.ac-niv__campo label {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.9rem;
    color: #888;
    pointer-events: none;
    transition: all 0.2s ease;
    background: #fff;
    padding: 0 4px;
}

.ac-niv__input {
    width: 100%;
    border: 1px solid #ccc;
    border-radius: 6px;
    padding: 14px 12px 6px;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s;
    box-sizing: border-box;
}

.ac-niv__input:focus {
    border-color: #0B8185;
}

.ac-niv__input:not(:placeholder-shown) + label,
.ac-niv__input:focus + label {
    top: 0;
    font-size: 0.75rem;
    color: #0B8185;
}

/* Questões */
.ac-niv__questoes {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 28px;
}

.ac-niv__questao {
    background: #f9f9f9;
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    padding: 16px;
}

.ac-niv__questao-header {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
}

.ac-niv__numero {
    min-width: 28px;
    height: 28px;
    border-radius: 50%;
    background: #0B8185;
    color: #fff;
    font-size: 0.8rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.ac-niv__enunciado {
    font-size: 0.95rem;
    line-height: 1.5;
    color: #333;
}

.ac-niv__select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 0.9rem;
    background: #fff;
    color: #333;
    cursor: pointer;
    outline: none;
    transition: border-color 0.2s;
    box-sizing: border-box;
}

.ac-niv__select:focus {
    border-color: #0B8185;
}

/* Footer / Botão */
.ac-niv__footer {
    text-align: center;
    margin-top: 8px;
}

.ac-niv__btn {
    background: #0B8185;
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 14px 48px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

.ac-niv__btn:hover {
    opacity: 0.88;
}

.ac-niv__btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Mensagem de retorno */
.ac-niv__mensagem {
    margin-top: 16px;
    padding: 12px 16px;
    border-radius: 6px;
    font-size: 0.95rem;
    display: none;
    text-align: center;
}

.ac-niv__mensagem.sucesso {
    background: #e6f7f1;
    color: #1a7a50;
    border: 1px solid #b2dfce;
    display: block;
}

.ac-niv__mensagem.erro {
    background: #fdecea;
    color: #c0392b;
    border: 1px solid #f5c6cb;
    display: block;
}

/* Responsivo */
@media (max-width: 480px) {
    .ac-niv__contato-campos {
        grid-template-columns: 1fr;
    }
}