.a_btn,
button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.6rem 1.1rem;
    border-radius: 0.7rem;
    border: none;
    font: 700 0.82rem "Ubuntu", sans-serif;
    cursor: pointer;
    text-decoration: none;
    transition: transform .15s ease, filter .15s ease;
}

.a_btn:hover,
button:hover {
    transform: translateY(-1px);
    filter: brightness(1.06);
}

.a_btn:active,
button:active {
    transform: scale(0.95);
}

.btn_principal {
    background: var(--base);
    color: var(--base_clara);
}

.btn_secundario {
    background: var(--base_clara);
    color: var(--base);
}

.btn_verde {
    background: var(--bien_fondo);
    color: var(--bien);
}

.btn_rojo {
    background: var(--mal_fondo);
    color: var(--mal);
}

.btn_cuadrado {
    width: 2.4rem;
    height: 2.4rem;
    padding: 0;
    border-radius: 50%;
}

.btn_todo_el_ancho {
    width: 100%;
}