:root {
  color-scheme: light dark;
  --bg: #0c0c0f;
  --rail: #121218;
  --panel: #16161c;
  --fg: #f4f4f5;
  --muted: #a1a1aa;
  --line: rgba(255, 255, 255, 0.1);
  --accent: #7c6af7;
  --accent-soft: rgba(124, 106, 247, 0.16);
  --warn: #f59e0b;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f4f5;
    --rail: #ececee;
    --panel: #ffffff;
    --fg: #18181b;
    --muted: #52525b;
    --line: rgba(0, 0, 0, 0.08);
    --accent: #5b4cdb;
    --accent-soft: rgba(91, 76, 219, 0.1);
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
}
.wrap { max-width: 28rem; margin: 0 auto; padding: 3rem 1.25rem; }
.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  margin: 0 0 1rem;
}
h1 { font-size: 1.75rem; letter-spacing: -0.03em; margin: 0 0 0.5rem; }
h2 { font-size: 1.15rem; margin: 0 0 0.75rem; }
.lede { color: var(--muted); margin: 0 0 1.5rem; }
label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 0.35rem; }
input, select {
  width: 100%;
  padding: 0.7rem 0.8rem;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--fg);
  font: inherit;
  margin-bottom: 0.85rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 10px;
  padding: 0.6rem 0.95rem;
  font: inherit;
  font-weight: 600;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}
.btn-secondary {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--line);
}
.btn-warn { background: transparent; color: var(--warn); border: 0; padding: 0; font-weight: 600; }
.note { color: var(--muted); font-size: 0.9rem; margin-top: 1rem; }
.err { color: var(--warn); font-size: 0.9rem; margin: 0.4rem 0 0; }

.shell { display: flex; min-height: 100vh; }
.rail {
  width: 200px;
  flex-shrink: 0;
  background: var(--rail);
  border-right: 1px solid var(--line);
  padding: 1.25rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.rail h1 { font-size: 0.95rem; margin: 0 0.5rem 1rem; }
.nav-btn {
  text-align: left;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  padding: 0.55rem 0.7rem;
  border-radius: 8px;
  cursor: pointer;
}
.nav-btn.on { background: var(--accent-soft); color: var(--fg); font-weight: 600; }
.rail .spacer { flex: 1; }
.main { flex: 1; padding: 1.75rem 2rem; min-width: 0; }
.page { display: none; }
.page.on { display: block; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 0.75rem; margin: 1rem 0 1.5rem; }
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem 1.1rem;
}
.card .n { font-size: 1.6rem; font-weight: 700; letter-spacing: -0.03em; }
.card .k { color: var(--muted); font-size: 0.85rem; }
.table-wrap { overflow: auto; border: 1px solid var(--line); border-radius: 12px; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.55rem 0.75rem; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; }
tr:last-child td { border-bottom: 0; }
.row-actions { display: flex; gap: 0.5rem; align-items: flex-end; flex-wrap: wrap; }
.row-actions > * { flex: 1; min-width: 10rem; }
.muted { color: var(--muted); }
.linkish { background: none; border: 0; color: var(--accent); font: inherit; cursor: pointer; padding: 0; }
.back { margin-bottom: 0.75rem; }
@media (max-width: 720px) {
  .shell { flex-direction: column; }
  .rail { width: 100%; flex-direction: row; flex-wrap: wrap; border-right: 0; border-bottom: 1px solid var(--line); }
  .rail h1 { width: 100%; }
}