*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  font-size: 1.125rem;
  color: white;
  line-height: 1.5;
  background-color: #2e323b;
  margin: 1rem 0;
}

.container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 100vh;
  gap: 3rem;
  margin: 0 2rem;
  background-color: #1d2025;
  border-radius: 10px;
  border: 2px solid white;
  padding: 20px 10px;
}

.input-content {
  border-radius: 8px;
  border: 1px solid white;
  padding: 8px;
  max-width: 710px;
  background-color: #222;
}

h1 {
  text-align: center;
  color: #00e5ff;
}

form {
  display: grid;
  grid-template-columns: minmax(0, 300px) 1fr;
  gap: 2rem;
  align-items: center;
  padding: 0 1rem;
}

#language {
  font-size: inherit;
  border-radius: 4px;
  padding: 4px;
}

input[type="number"] {
  width: 20%;
  padding-left: 5px;
  font-size: inherit;
}

span {
  margin-right: 1rem;
}

input[type="text"] {
  width: 100%;
  padding: 3px;
  font-size: inherit;
}

label {
  margin-right: 1rem;
}

#lbl-custom {
  margin-right: 1.5rem;
}

.id-range label {
  margin: 0;
}

.input-content label:last-child {
  margin: 0;
}

input[disabled] + label {
  color: #bbb;
  cursor: not-allowed;
}

input[disabled] {
  cursor: not-allowed;
}

input[type="text"],
input[type="number"] {
  border-radius: 4px;
}

input[type="checkbox"],
input[type="radio"] {
  position: relative;
  top: 1px;
}

.btn {
  padding: 10px 16px;
  border-radius: 6px;
  background-color: #2563eb;
  color: #ffffff;
  border: none;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: background-color 0.2s, box-shadow 0.2s;
  font-size: inherit;
}

.btn:hover {
  background-color: #1d4ed8;
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.15);
}

.btn:active {
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

h3 {
  font-size: 1.5rem;
  border-bottom: 3px solid #8a2be2;
  padding: 6px 30px 4px;
}

pre {
  font-family: inherit;
  font-size: inherit;
  overflow-x: auto;
  padding: 2rem;
}

.result-section {
  background-color: #111;
  border-radius: 8px;
  border-left: 8px solid #8a2be2;
  border-right: 8px solid #8a2be2;
}

.form-buttons {
  display: flex;
  gap: 1rem;
}

@media (max-width: 768px) {
  .container {
    margin: 0 1rem;
    padding: 20px 5px;
    gap: 2rem;
  }

  form {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 0 0.5rem;
  }

  h1 {
    font-size: 1.5rem;
    padding: 0 0.5rem;
  }

  pre {
    padding: 1rem;
    font-size: 0.9rem;
  }

  h3 {
    padding: 6px 15px 4px;
    font-size: 1.2rem;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 1rem;
    margin: 0.5rem 0;
  }

  .container {
    gap: 1.5rem;
    margin: 0 0.5rem;
    border: 1px solid white;
  }

  form {
    gap: 1rem;
  }

  label {
    margin-right: 0.5rem;
  }

  #lbl-custom {
    margin-right: 1rem;
  }

  .result-section {
    border-left: 4px solid #8a2be2;
    border-right: 4px solid #8a2be2;
  }

  .btn {
    padding: 8px 12px;
  }
}