* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: sans-serif;
}

body {
  background: url(./Dark-Blue-Wallpaper.jpg);
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  min-height: 100vh;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.container {
  width: 100%;
  max-width: 700px;
}

.calculator {
  width: 100%;
  background: rgba(255, 255, 255, 0.2);
  padding: 20px;
  border-radius: 15px;
  box-shadow: 0 8px 20px rgba(248, 246, 246, 0.6);
}

.calculator h1 {
  font-size: 40px;
  text-align: center;
  margin-bottom: 30px;
  color: #fff;
}

.calculator h1 span {
  color: gold;
}

.input-box {
  display: flex;
  flex-direction: column;
  gap: 20px;
  background: rgba(255, 255, 255, 0.3);
  padding: 25px;
  border-radius: 10px;
}

.input-box input {
  padding: 14px 20px;
  font-size: 18px;
  border: none;
  border-radius: 5px;
  width: 100%;
}

.input-box button {
  background-color: gold;
  border: none;
  padding: 15px;
  border-radius: 5px;
  font-weight: bold;
  color: #333;
  cursor: pointer;
  transition: background 0.3s ease;
}

.input-box button:hover {
  background-color: #e6c200;
}

#result {
  font-size: 22px;
  text-align: center;
  margin-top: 20px;
}

/* Responsive layout adjustments */
@media (min-width: 600px) {
  .input-box {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .input-box input {
    flex: 1;
    margin-right: 20px;
  }

  #result {
    font-size: 24px;
  }

  .calculator h1 {
    font-size: 50px;
  }
}

@media (max-width: 400px) {
  .calculator h1 {
    font-size: 32px;
  }

  #result {
    font-size: 20px;
  }
}