:root {
  --bg: #f5f8fa;
  --surface: #ffffff;
  --border: #d7e2ea;
  --fg: #16303f;
  --muted: #5b7384;
  --accent: #1f6f9c;
  --accent-fg: #ffffff;
  --danger: #b42318;
  --danger-soft: #fdeceb;
  --ok: #176b43;
  --ok-soft: #e7f6ee;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1f2a;
    --surface: #162936;
    --border: #28455a;
    --fg: #e8f1f7;
    --muted: #9bb6c8;
    --accent: #4aa3d4;
    --accent-fg: #061620;
    --danger: #ff9a92;
    --danger-soft: #3a1d1b;
    --ok: #86e0b4;
    --ok-soft: #123528;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0 16px 48px;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  max-width: 820px;
  margin: 0 auto;
  padding: 20px 0 12px;
}

.topbar h1 {
  margin: 0;
  font-size: 18px;
  letter-spacing: 0.01em;
}

.meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
}

.pill {
  padding: 2px 8px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
}

.tabs {
  display: flex;
  gap: 4px;
  max-width: 820px;
  margin: 0 auto 12px;
}

.tab {
  padding: 6px 12px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: none;
  color: var(--muted);
  font: inherit;
  font-size: 14px;
  cursor: pointer;
}

.tab.active {
  border-color: var(--border);
  background: var(--surface);
  color: var(--fg);
}

main {
  max-width: 820px;
  margin: 0 auto;
}

.card {
  margin-bottom: 14px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
}

.card h2 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 4px;
  font-size: 15px;
}

.card h3 {
  margin: 0 0 6px;
  font-size: 13px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.step {
  display: inline-grid;
  place-items: center;
  width: 20px;
  height: 20px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-fg);
  font-size: 12px;
}

.alert {
  border-color: var(--danger);
  background: var(--danger-soft);
}

.alert h2 {
  color: var(--danger);
}

label {
  display: block;
  margin-bottom: 12px;
}

.label {
  display: block;
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

input[type='text'],
input[type='email'],
input[type='password'],
input[type='date'],
select {
  width: 100%;
  padding: 7px 9px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
  font: inherit;
}

input[type='file'] {
  width: 100%;
  padding: 14px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  background: var(--bg);
  font: inherit;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 14px;
}

.columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

@media (max-width: 640px) {
  .grid,
  .columns {
    grid-template-columns: 1fr;
  }
}

fieldset {
  margin: 0 0 12px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
}

legend {
  padding: 0 4px;
}

.radio {
  display: inline-block;
  margin: 0 14px 6px 0;
  font-size: 14px;
}

.quick {
  display: inline-flex;
  gap: 8px;
  margin-inline-start: 8px;
}

.features {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  padding: 10px 2px 2px;
}

.features label {
  margin: 0;
  font-size: 14px;
}

details {
  margin-bottom: 12px;
}

summary {
  color: var(--muted);
  cursor: pointer;
  font-size: 14px;
}

.actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 6px;
}

#login .actions {
  justify-content: space-between;
}

button.primary {
  padding: 8px 14px;
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: var(--accent-fg);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

button.primary:disabled {
  opacity: 0.5;
  cursor: default;
}

button.link {
  padding: 4px;
  border: 0;
  background: none;
  color: var(--accent);
  font: inherit;
  cursor: pointer;
  text-decoration: underline;
}

.msg {
  margin-top: 10px;
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 14px;
}

.msg.error {
  background: var(--danger-soft);
  color: var(--danger);
}

.msg.success {
  background: var(--ok-soft);
  color: var(--ok);
}

.reqinfo {
  margin-top: 10px;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  font-size: 14px;
}

.machine {
  margin: 0 0 10px;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 20px;
  letter-spacing: 0.04em;
}

dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 12px;
  margin: 0;
  font-size: 14px;
}

dt {
  color: var(--muted);
}

dd {
  margin: 0;
  overflow-wrap: anywhere;
}

pre {
  overflow-x: auto;
  margin: 8px 0 0;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  font-size: 12.5px;
}

code {
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 0.92em;
}

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

.hint {
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

th,
td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
  text-align: start;
}

th {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.hidden {
  display: none;
}