/* Calculator App Styles */

.calc-app {
  background: #333;
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: 10px;
}

#calc-display {
  background: transparent;
  color: white;
  font-size: 36px;
  text-align: right;
  border: none;
  width: 100%;
  margin-bottom: 10px;
  outline: none;
  font-weight: 300;
}

.calc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  flex: 1;
}

.calc-btn {
  border: none;
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
  transition: filter 0.1s;
  color: white;
}

.calc-btn:active {
  filter: brightness(1.2);
}

.c-num {
  background: #555;
}

.c-op {
  background: #ff9f0a;
  font-size: 22px;
  padding-top: 3px;
}

.c-top {
  background: #a5a5a5;
  color: black;
}

.c-zero {
  grid-column: span 2;
  border-radius: 30px;
  text-align: left;
  padding-left: 25px;
}