.btn-primary-custom {
    background-color: #a67c52; /* marrom claro base */
    color: #ffffff;
    border: 1px solid #8c6845;
    padding: 10px 18px;
    font-size: 14px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    margin-bottom: 1rem;
}

/* hover */
.btn-primary-custom:hover {
    background-color: #8c6845;
    border-color: #735537;
}

/* active (clicando) */
.btn-primary-custom:active {
    background-color: #735537;
    transform: scale(0.98);
}

/* foco (acessibilidade) */
.btn-primary-custom:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(166, 124, 82, 0.4);
}

/* desabilitado */
.btn-primary-custom:disabled {
    background-color: #d2b48c;
    border-color: #c2a178;
    cursor: not-allowed;
    opacity: 0.7;
}