.btn {
  --btn-bg: var(--color-mocha-deep);
  --btn-fg: var(--color-ivory);
  --btn-sweep: var(--color-espresso);
  --btn-sweep-fg: var(--color-ivory);
  --btn-cut: 0.8rem;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  padding: 1rem 1.7rem 1rem 1.9rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--btn-fg);
  background-color: var(--btn-bg);
  background-image: linear-gradient(var(--btn-sweep), var(--btn-sweep));
  background-repeat: no-repeat;
  background-position: left center;
  background-size: 0% 100%;
  border: 0;
  border-radius: 0;
  cursor: pointer;
  clip-path: polygon(
    var(--btn-cut) 0,
    100% 0,
    100% calc(100% - var(--btn-cut)),
    calc(100% - var(--btn-cut)) 100%,
    0 100%,
    0 var(--btn-cut)
  );
  transition: background-size 0.5s cubic-bezier(0.65, 0, 0.35, 1),
              color 0.3s ease,
              translate var(--transition);
}
.btn::after {
  content: "\2192";
  content: "\2192" / "";
  font-size: 1.2em;
  letter-spacing: 0;
  color: var(--color-gold);
  transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1), color 0.3s ease;
}
.btn:hover,
.btn:focus-visible {
  background-size: 100% 100%;
  color: var(--btn-sweep-fg);
  translate: 0 -2px;
}
.btn:hover::after,
.btn:focus-visible::after { transform: translateX(0.45rem); }
.btn:focus-visible {
  outline: none;
  text-decoration: underline;
  text-underline-offset: 0.35em;
}

.btn--ghost {
  --btn-bg: rgba(255, 249, 240, 0.85);
  --btn-fg: var(--color-espresso);
  box-shadow: inset 0 0 0 2px var(--color-espresso);
}

.btn--dark {
  --btn-bg: var(--color-espresso);
  --btn-sweep: var(--color-ivory);
  --btn-sweep-fg: var(--color-espresso);
}
.btn--dark:hover::after,
.btn--dark:focus-visible::after { color: var(--color-mocha-deep); }