* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: #121410;
  color: #ece7d8;
  font: 16px/1.4 system-ui, sans-serif;
}

main {
  width: min(420px, calc(100% - 32px));
}

h1 {
  margin: 0 0 4px;
  font-size: 22px;
  font-weight: 600;
}

.hint {
  margin: 0 0 20px;
  color: #9a9484;
  font-size: 13px;
}

code { color: #c4a35a; }

label {
  display: block;
  margin-bottom: 12px;
  color: #9a9484;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

input {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 12px;
  border: 1px solid #2c3228;
  background: #0c0e0b;
  color: #ece7d8;
  font: 18px/1.2 ui-monospace, Consolas, monospace;
}

input:focus {
  outline: none;
  border-color: #c4a35a;
}

#out {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  margin-top: 20px;
}

#out div {
  padding: 12px 8px;
  background: #1a1e17;
  border: 1px solid #2c3228;
}

small {
  display: block;
  color: #9a9484;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

strong {
  display: block;
  margin-top: 6px;
  font-size: 20px;
  font-weight: 600;
}

#work {
  margin: 12px 0 0;
  color: #9a9484;
  font: 12px/1.4 ui-monospace, Consolas, monospace;
}

#note {
  min-height: 1.4em;
  margin: 8px 0 0;
  color: #e07a5f;
  font-size: 13px;
}

#note[data-ok] { color: #8fbf7a; }