:root {
  --bg: #0d0d10;
  --card: #18181b;
  --line: #34343a;
  --ink: #f4f4f5;
  --muted: #a1a1aa;
  --brand: #dc2626;
  --accent: #a855f7;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Segoe UI', system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(900px 500px at 50% -10%, #2a1216 0%, transparent 70%),
    var(--bg);
  line-height: 1.55;
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  padding: 28px 0 8px;
}

header .wrap {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.logo {
  font-size: 22px;
  font-weight: 700;
}

.tag {
  color: var(--muted);
}

main {
  padding-bottom: 40px;
}

.card {
  margin: 20px 0;
  padding: 22px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
}

h1 {
  margin: 0 0 8px;
  font-size: 22px;
}

h2 {
  margin: 22px 0 8px;
  font-size: 16px;
}

.card > h2:first-child {
  margin-top: 0;
}

p {
  margin: 0 0 12px;
  color: #d4d4d8;
}

.hint {
  font-size: 13px;
  color: var(--muted);
}

.hint.bad,
.status.bad {
  color: #fca5a5;
}

.field {
  margin: 14px 0;
}

label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--muted);
}

.row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.row.spread {
  justify-content: space-between;
  margin-top: 16px;
}

input[type='text'] {
  flex: 1;
  padding: 10px 12px;
  font: inherit;
  color: var(--ink);
  background: #101014;
  border: 1px solid var(--line);
  border-radius: 9px;
}

input[type='range'] {
  flex: 1;
  accent-color: var(--brand);
}

output {
  min-width: 60px;
  text-align: right;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

button {
  padding: 10px 16px;
  font: inherit;
  font-size: 14px;
  color: var(--ink);
  background: #27272a;
  border: 1px solid var(--line);
  border-radius: 9px;
  cursor: pointer;
}

button:hover {
  background: #3f3f46;
}

button.primary {
  background: var(--brand);
  border-color: var(--brand);
  font-weight: 600;
}

button.primary:hover {
  background: #ef4444;
}

button.danger {
  border-color: #7f1d1d;
  color: #fca5a5;
}

.copybox {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 10px 0 4px;
  padding: 10px 12px;
  background: #101014;
  border: 1px solid var(--line);
  border-radius: 9px;
}

.copybox code {
  flex: 1;
  overflow-x: auto;
  font-size: 13px;
  color: #86efac;
  white-space: nowrap;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 8px;
}

.commands {
  display: grid;
  gap: 6px;
}

.command {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  font-size: 14px;
  background: #101014;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.command code {
  min-width: 96px;
  color: var(--accent);
}

.command span {
  color: #d4d4d8;
}

.toggle {
  cursor: pointer;
}

.check {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 10px 0;
  font-size: 14px;
  color: #d4d4d8;
  cursor: pointer;
}

.status {
  font-size: 13px;
  color: var(--muted);
}

details {
  margin-top: 16px;
}

summary {
  color: var(--muted);
  cursor: pointer;
}

footer {
  padding: 20px 0 44px;
  font-size: 13px;
  color: var(--muted);
}

.hidden {
  display: none;
}