/* Reset & Base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-light: rgb(245, 245, 245);
  --color-dark: rgb(21, 24, 24);
  --highlight: #e2e243;
  font-family: 'Roboto', sans-serif;
  font-size: clamp(16px, 1.5vw, 20px);
}

body {
  background: linear-gradient(90deg, rgb(48, 150, 178) 40%, rgb(141, 64, 236) 60%);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  color: #fff;
  backdrop-filter: blur(100px);
  padding: 1rem;
  text-align: center;
  transition: background 3s ease-in-out;
}

/* Main Box */
.main {
  background-color: rgba(199, 199, 199, 0.35);
  width: 100%;
  max-width: 500px;
  border: 2px solid;
  border-radius: 30px;
  padding: 2rem;
  box-shadow: #f0f0f0 0px 0px 20px 10px;
}

/* Title */
.title {
  font-size: clamp(24px, 4vw, 40px);
  font-weight: bold;
  letter-spacing: 1px;
  text-shadow: #000 2px 2px 4px;
  display: block;
  margin-bottom: 1.5rem;
}

/* Input */
#converter {
  width: 100%;
  border: none;
  border-radius: 30px;
  padding: 0.7rem 1rem;
  font-size: clamp(18px, 2vw, 22px);
  outline-color: var(--color-dark);
  margin-bottom: 1rem;
}

/* Result */
.result {
  font-size: clamp(20px, 2vw, 26px);
  font-weight: bold;
  letter-spacing: 1px;
  color: var(--highlight);
  text-shadow: #000 2px 2px 4px;
  min-height: 2rem;
  margin-bottom: 2rem;
}

/* Buttons container */
#buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

/* Button Styles */
button {
  flex: 1 1 30%;
  min-width: 90px;
  padding: 0.7rem;
  background: rgba(229, 228, 228, 0.53);
  border: 2px solid var(--color-light);
  border-radius: 30px;
  color: var(--color-dark);
  font-size: clamp(14px, 2vw, 18px);
  box-shadow: 3px 3px 10px var(--color-light);
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.3s, box-shadow 0.3s, background 0.3s;
}

button:hover {
  color: var(--color-light);
  box-shadow: 3px 3px 10px var(--color-dark);
  background: rgba(255, 255, 255, 0.1);
}

/* Small devices */
@media (max-width: 500px) {
  .main {
    padding: 1.5rem;
    border-radius: 20px;
  }

  #buttons {
    flex-direction: column;
  }

  button {
    width: 100%;
  }
}