/* ===========================
   Calculator App
   =========================== */
#window-calculator .window__body {
  display: flex;
  justify-content: center;
  padding: 1rem;
}

.calculator {
  width: 100%;
  max-width: 280px;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.calculator__display {
  font-family: var(--font-body);
  font-size: 1.6rem;
  text-align: right;
  padding: 0.6rem 0.75rem;
  min-height: 2.4rem;
  border: 1px solid var(--xp-bevel-dark);
  border-radius: 2px;
  background: var(--xp-face);
  box-shadow:
    inset 1px 1px 2px var(--xp-bevel-shadow),
    inset -1px -1px 0 var(--xp-bevel-light);
  overflow-x: auto;
  white-space: nowrap;
}

.calculator__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.45rem;
}

.calculator__btn {
  font-family: var(--font-hand);
  font-size: 1.05rem;
  padding: 0.65rem 0;
  border-radius: 3px;
  color: var(--text);
  background: var(--xp-face);
  border: 1px solid var(--xp-bevel-shadow);
  box-shadow:
    inset 1px 1px 0 var(--xp-bevel-light),
    inset -1px -1px 0 var(--xp-bevel-dark);
  cursor: pointer;
}

.calculator__btn:hover {
  background: #fff;
}

.calculator__btn:active {
  box-shadow:
    inset -1px -1px 0 var(--xp-bevel-light),
    inset 1px 1px 0 var(--xp-bevel-dark);
  transform: translateY(1px);
}

.calculator__btn--wide {
  grid-column: span 2;
}

.calculator__btn--equals {
  grid-row: span 2;
  background: var(--primary-accent);
  color: #fff;
}

.calculator__btn--op {
  color: var(--primary-accent);
  font-weight: 700;
}

.calculator__btn--clear {
  color: #B00020;
  font-weight: 700;
}