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

body {
  min-height: 100vh;
  padding: 3rem 1.5rem;
}

.container {
  max-width: 680px;
  margin: 0 auto;
}

header {
  border-top: 3px solid black;
  padding-top: 1.25rem;
  margin-bottom: 2.5rem;
}

.form-card {
  border: 1px solid black;
  padding: 1.75rem;
  margin-bottom: 1.75rem;
}

.fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.field label {
  display: block;
}

.field input {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid black;
  outline: none;
}

button.generate {
  padding: 0.5rem;
}

.error {
  color: red;
  margin-top: 0.75rem;
  display: none;
}

/* Results */

.results {
  display: none;
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.5rem;
}

.copy-btn {
  cursor: pointer; /* pointy finger */
  padding: 0.25rem;
}

.copy-btn.copied {
  color: gray;
}

textarea {
  width: 100%;
  padding: 1rem;
  margin-bottom: 1.5rem;
}

footer {
  margin-top: 3rem;
  border-top: 1px solid black;
  padding-top: 1rem;
}