:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --border: #2d3a4d;
  --text: #e6edf3;
  --muted: #8b9cb3;
  --accent: #58a6ff;
  --danger: #f85149;
  --ok: #3fb950;
  font-family: "SF Pro Text", "Segoe UI", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

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

.small {
  font-size: 0.85rem;
}

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
}

.card h1 {
  margin: 0 0 0.5rem;
  font-size: 1.35rem;
}

.card h2 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
}

.hint {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  max-width: 360px;
}

.form.row {
  flex-direction: row;
  flex-wrap: wrap;
  align-items: flex-end;
  max-width: none;
  gap: 1rem;
}

label {
  font-size: 0.85rem;
  color: var(--muted);
}

.inline {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 0.45rem 0.6rem;
  min-width: 0;
}

input[type="number"] {
  width: 5rem;
}

.btn {
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  border-radius: 6px;
  padding: 0.5rem 0.9rem;
  font-size: 0.9rem;
}

.btn.primary {
  background: var(--accent);
  border-color: transparent;
  color: #0f1419;
  font-weight: 600;
}

.btn.ghost {
  background: transparent;
}

.btn:hover {
  filter: brightness(1.08);
}

.err {
  color: var(--danger);
  font-size: 0.9rem;
  margin-top: 0.75rem;
}

.hidden {
  display: none !important;
}

.out {
  margin-top: 1rem;
}

.token-row {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
  margin-top: 0.35rem;
}

.token-row textarea {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 0.5rem;
  font-family: ui-monospace, monospace;
  font-size: 0.8rem;
}

.toolbar {
  display: flex;
  align-items: flex-end;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.table th,
.table td {
  padding: 0.45rem 0.65rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.table th {
  background: #141c28;
  color: var(--muted);
  font-weight: 500;
}

.table tbody tr:last-child td {
  border-bottom: none;
}

.table td.mono {
  font-family: ui-monospace, monospace;
  word-break: break-all;
  max-width: 12rem;
}

.link {
  font-size: 0.88rem;
  color: var(--muted);
  text-decoration: none;
}

.link:hover {
  color: var(--accent);
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.tab {
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--muted);
  border-radius: 6px;
  padding: 0.4rem 0.75rem;
  font-size: 0.85rem;
}

.tab:hover {
  color: var(--text);
}

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

@media (max-width: 640px) {
  .form.row {
    flex-direction: column;
    align-items: stretch;
  }
}