/* ─── keytap — BSOD brutalist ─── */

:root {
  color-scheme: dark;
  --bg: hsl(240, 100%, 20%);
  --fg: #fff;
  --muted: hsl(240, 40%, 72%);
  --panel-bg: hsla(240, 100%, 28%, 0.5);
  --line: hsla(0, 0%, 100%, 0.15);
  --accent: #00ff66;
  --accent-fg: hsl(240, 100%, 14%);
  --error: #ff4444;
  --callout-bg: hsla(240, 100%, 32%, 0.4);
  --display: "Pixelify Sans", monospace;
  --body: "Iosevka Charon", "SF Mono", "Fira Code", "Courier New", monospace;
}

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

html, body {
  min-height: 100%;
}

body {
  font: 18px/1.65 var(--body);
  color: var(--fg);
  background: var(--bg);
  display: grid;
  place-items: center;
  padding: 48px 24px;
}

/* ─── shell ─── */

.shell {
  width: min(100%, 680px);
  padding: 0;
  border: none;
  background: none;
}

/* ─── eyebrow / label ─── */

.eyebrow {
  font-family: var(--display);
  text-transform: uppercase;
  letter-spacing: 0.25em;
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}

.eyebrow::before {
  content: "> ";
}

/* ─── headings ─── */

h1 {
  font: 700 clamp(2rem, 5vw, 3rem)/1.1 var(--display);
  color: var(--fg);
  margin: 8px 0 24px;
}

/* ─── text blocks ─── */

.summary,
.details,
.status,
.hint,
.panel-note {
  margin: 0;
}

.summary {
  font-size: 1.1rem;
  max-width: 38rem;
  line-height: 1.7;
}

.details {
  margin-top: 14px;
  color: var(--muted);
  font-size: 0.95rem;
}

/* ─── inline code ─── */

code {
  font: inherit;
  color: var(--accent);
  background: hsla(0, 0%, 100%, 0.06);
  padding: 1px 6px;
}

/* ─── links ─── */

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ─── panel ─── */

.panel {
  margin-top: 28px;
  padding: 20px 22px;
  border: 1px solid var(--line);
  background: var(--panel-bg);
}

.panel-label {
  font-family: var(--display);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  margin: 0;
}

.panel-header {
  display: flex;
  gap: 16px;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
}

.panel-note {
  color: var(--muted);
  font-size: 0.95rem;
}

/* ─── steps ─── */

.steps {
  margin: 16px 0 0;
  padding-left: 22px;
  font-size: 1rem;
}

.steps li + li {
  margin-top: 10px;
}

.steps li::marker {
  color: var(--accent);
  font-weight: 700;
}

/* ─── callout ─── */

.callout {
  margin-top: 20px;
  padding: 16px 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  background: var(--callout-bg);
  font-size: 0.95rem;
  color: var(--muted);
}

/* ─── action button ─── */

.action {
  appearance: none;
  display: inline-block;
  margin-top: 28px;
  border: 2px solid var(--accent);
  padding: 14px 28px;
  font-family: var(--body);
  font-weight: 700;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  min-width: 16rem;
  transition: background 60ms, color 60ms;
}

.action:hover:enabled {
  background: var(--accent);
  color: var(--accent-fg);
}

.action:active:enabled {
  background: #00cc52;
  color: var(--accent-fg);
}

.action:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  border-color: var(--muted);
  color: var(--muted);
}

/* ─── status / hint ─── */

.status {
  margin-top: 20px;
  min-height: 1.6em;
  font-family: var(--display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--muted);
  line-height: 1.4;
}

.hint {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.95rem;
}

/* ─── result ─── */

.result {
  margin-top: 28px;
  padding: 20px 22px;
  border: 1px solid var(--accent);
  background: var(--panel-bg);
}

.result-value {
  margin: 14px 0 0;
  font-family: var(--body);
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--accent);
  white-space: pre-wrap;
  word-break: break-all;
  user-select: all;
}

.copy-btn {
  appearance: none;
  border: 1px solid var(--accent);
  padding: 4px 14px;
  font-family: var(--display);
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  transition: background 60ms, color 60ms;
}

.copy-btn:hover {
  background: var(--accent);
  color: var(--accent-fg);
}

/* ─── responsive ─── */

@media (max-width: 640px) {
  body {
    padding: 32px 16px;
  }

  .action {
    width: 100%;
    min-width: 0;
  }
}