:root {
  --bg: #000000;
  --green: #19ff5a;
  --green-dim: #0f7d33;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  font-family: Consolas, "Courier New", monospace;
  color: var(--green);
  display: flex;
  align-items: center;
  justify-content: center;
}

.wrap {
  width: min(520px, calc(100% - 32px));
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.output {
  min-height: 42px;
  color: var(--green);
  font-size: 28px;
  text-align: center;
  word-break: break-word;
  text-shadow: 0 0 12px rgba(25, 255, 90, 0.28);
  margin-bottom: 8px;
}

input,
button {
  width: 100%;
  background: #000;
  color: var(--green);
  border: 1px solid var(--green);
  padding: 14px 16px;
  font: inherit;
  outline: none;
  box-shadow: 0 0 10px rgba(25, 255, 90, 0.08);
}

input::placeholder {
  color: var(--green-dim);
}

input:focus,
button:hover {
  box-shadow:
    0 0 0 1px var(--green),
    0 0 14px rgba(25, 255, 90, 0.18);
}

button {
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}