:root {
  --border-color: rgb(7, 11, 9);
  --primary-background: rgb(91, 203, 147);
  --transparent: rgba(0, 0, 0, 0);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "JetBrains Mono", monospace;
  font-weight: bolder;
  color: var(--border-color);
}

body {
  background: url(https://4kwallpapers.com/images/walls/thumbs_3t/25823.jpg)
    no-repeat;
  background-size: cover;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.container {
  width: 320px;
  height: 480px;
  padding: 15px;
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  border: 1px solid var(--border-color);
}

.display {
  width: 100%;
  height: 80px;
  border-radius: 12px;
  background: var(--transparent);
  border: none;
  text-align: center;
  outline: none;
  font-size: 1.5rem;
}

.calculator-btn {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 15px;
}

button {
  width: 100%;
  height: 70px;
  border-radius: 15px;
  background-color: var(--primary-background);
  border: 0.5px solid var(--border-color);
  font-size: 1.2rem;
  transition: all 0.15s ease-in-out;
}

.equal-to {
  grid-column: span 2;
  height: 70px;
  font-size: 1.5rem;
}

button:hover {
  transform: scale(1.05);
  box-shadow: 0 2px 10px var(--primary-background);
}

/* MEDIA QUIRES */
@media (max-width: 480px) {
  .container {
    width: 90%;
    height: 55vh;
  }

  .display {
    height: 70px;
    font-size: 1.2rem;
  }

  button {
    height: 50px;
    font-size: 1rem;
  }

  .equal-to {
    height: 60px;
  }
}

@media (min-width: 481px) and (max-width: 1910px) {
  .container {
    height: 66vh;
  }
}