:root {
  --bg: #eef1f5;
  --surface: #ffffff;
  --surface-2: #f5f7fa;
  --ink: #1a2230;
  --ink-soft: #46536a;
  --ink-faint: #6b7789;
  --line: #dbe1ea;
  --line-soft: #e8ecf2;
  --accent: #0d7d8c;
  --accent-ink: #095963;
  --accent-wash: #e2f1f2;
  --good: #2f855a;
  --warn: #b06d10;
  --warn-wash: #f7edda;
  --crit: #b3271e;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --shadow: 0 1px 2px rgba(26,34,48,.04), 0 6px 20px rgba(26,34,48,.06);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e131b; --surface: #161d28; --surface-2: #1b232f; --ink: #e7ecf3;
    --ink-soft: #aab6c8; --ink-faint: #7d8a9d; --line: #29323f; --line-soft: #212a36;
    --accent: #3fb6c4; --accent-ink: #8fdbe4; --accent-wash: #123037; --good: #58c08a;
    --warn: #d69a3a; --warn-wash: #322510; --crit: #e2685f;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.4);
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--sans); font-size: 14.5px; line-height: 1.5;
  display: grid; grid-template-columns: 260px 1fr; min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ---- sidebar ---- */
.sidebar {
  background: var(--surface); border-right: 1px solid var(--line);
  display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh;
}
.brand { display: flex; gap: 10px; align-items: center; padding: 18px 18px 14px; border-bottom: 1px solid var(--line-soft); }
.brand .logo { font-size: 24px; }
.brand strong { display: block; font-size: 14px; letter-spacing: -0.01em; }
.brand small { color: var(--ink-faint); font-size: 11.5px; }
nav#nav { flex: 1; overflow-y: auto; padding: 10px 10px 20px; }
.nav-group { font-family: var(--mono); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-faint); padding: 14px 10px 6px; }
.nav-item {
  display: flex; align-items: center; gap: 9px; width: 100%; text-align: left;
  padding: 7px 10px; border: none; background: none; color: var(--ink-soft);
  font: inherit; font-size: 13.5px; border-radius: 8px; cursor: pointer;
}
.nav-item:hover { background: var(--surface-2); color: var(--ink); }
.nav-item.active { background: var(--accent-wash); color: var(--accent-ink); font-weight: 600; }
.nav-item .ic { width: 18px; text-align: center; }
.who { padding: 12px 18px; border-top: 1px solid var(--line-soft); font-size: 11.5px; color: var(--ink-faint); font-family: var(--mono); word-break: break-word; }

/* ---- main ---- */
.main { min-width: 0; display: flex; flex-direction: column; }
.topbar {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 20px 28px; border-bottom: 1px solid var(--line); background: var(--surface);
  position: sticky; top: 0; z-index: 5;
}
.topbar h1 { margin: 0; font-size: 20px; letter-spacing: -0.015em; }
.muted { color: var(--ink-faint); font-size: 12.5px; margin: 2px 0 0; }
.topbar-actions { display: flex; gap: 10px; align-items: center; }
#search {
  font: inherit; font-size: 13.5px; padding: 8px 12px; border: 1px solid var(--line);
  border-radius: 8px; background: var(--surface-2); color: var(--ink); width: 200px;
}
#search:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

#content { padding: 22px 28px 60px; }

/* ---- buttons ---- */
.btn {
  font: inherit; font-size: 13px; font-weight: 600; padding: 8px 14px;
  border-radius: 8px; border: 1px solid var(--line); background: var(--surface);
  color: var(--ink); cursor: pointer;
}
.btn:hover { background: var(--surface-2); }
.btn.primary { background: var(--accent); color: #fff; border-color: transparent; }
.btn.primary:hover { filter: brightness(1.06); }
.btn.danger { color: var(--crit); border-color: var(--line); }
.btn.danger:hover { background: var(--warn-wash); }
.icon-btn { background: none; border: none; font-size: 16px; cursor: pointer; color: var(--ink-faint); padding: 4px 8px; border-radius: 6px; }
.icon-btn:hover { background: var(--surface-2); color: var(--ink); }

/* ---- table ---- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: 13.5px; }
thead th {
  text-align: left; font-size: 10.5px; letter-spacing: .06em; text-transform: uppercase;
  color: var(--ink-faint); font-weight: 700; padding: 11px 14px; background: var(--surface-2);
  border-bottom: 1px solid var(--line); white-space: nowrap; position: sticky; top: 0;
}
tbody td { padding: 10px 14px; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--surface-2); }
td.mono, .ipcell { font-family: var(--mono); font-variant-numeric: tabular-nums; color: var(--accent-ink); white-space: nowrap; }
td.actions { text-align: right; white-space: nowrap; }
td.actions .icon-btn { font-size: 14px; }
.long { max-width: 420px; white-space: pre-wrap; color: var(--ink-soft); font-size: 12.5px; }
.empty { padding: 40px; text-align: center; color: var(--ink-faint); }

.pill { display: inline-block; font-family: var(--mono); font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: 100px; }
.pill.warn { color: var(--warn); background: var(--warn-wash); }
.pill.good { color: var(--good); background: var(--accent-wash); }

.banner {
  border: 1px solid var(--line); border-left: 3px solid var(--warn); background: var(--warn-wash);
  border-radius: 10px; padding: 12px 15px; margin-bottom: 18px; font-size: 13px; color: var(--ink-soft);
}
.banner b { color: var(--ink); }

/* ---- modal ---- */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(10,14,20,.5); backdrop-filter: blur(2px);
  display: grid; place-items: center; padding: 20px; z-index: 50;
}
.modal { background: var(--surface); border-radius: 14px; box-shadow: var(--shadow); width: min(560px, 100%); max-height: 90vh; display: flex; flex-direction: column; border: 1px solid var(--line); }
.modal-head { display: flex; justify-content: space-between; align-items: center; padding: 16px 20px; border-bottom: 1px solid var(--line-soft); }
.modal-head h2 { margin: 0; font-size: 16px; }
.modal-body { padding: 18px 20px; overflow-y: auto; display: grid; gap: 14px; }
.field { display: grid; gap: 5px; }
.field label { font-size: 12px; font-weight: 600; color: var(--ink-soft); }
.field input, .field textarea {
  font: inherit; font-size: 13.5px; padding: 9px 11px; border: 1px solid var(--line);
  border-radius: 8px; background: var(--surface-2); color: var(--ink); width: 100%; resize: vertical;
}
.field textarea { min-height: 80px; font-family: var(--mono); font-size: 12.5px; line-height: 1.5; }
.field input:focus, .field textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 10px; padding: 14px 20px; border-top: 1px solid var(--line-soft); }

/* ---- toast ---- */
.toast {
  position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%);
  background: var(--ink); color: var(--surface); padding: 10px 18px; border-radius: 100px;
  font-size: 13px; font-weight: 600; box-shadow: var(--shadow); z-index: 60;
}

@media (max-width: 780px) {
  body { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; }
  nav#nav { display: flex; flex-wrap: wrap; gap: 4px; }
}