:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --ink: #1c2530;
  --muted: #6b7785;
  --line: #dfe5ec;
  --accent: #1a56db;
  --danger: #b3261e;
  --ok: #137333;
  --warn: #b06000;
}

* { box-sizing: border-box; }
body {
  margin: 0; font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg); color: var(--ink);
}

.topbar {
  display: flex; justify-content: space-between; align-items: center;
  background: #101828; color: #fff; padding: 0.6rem 1.2rem;
  position: sticky; top: 0; z-index: 50;
}
.brand { font-weight: 700; font-size: 1.1rem; }
.topbar .muted { color: #aab4c0; }
.topbar-right { display: flex; gap: 0.8rem; align-items: center; }
.topbar a.btn { color: #fff; }

/* Hamburger: hidden on desktop, shown on mobile (see media query). */
.menu-toggle {
  display: none;
  background: transparent; border: 0; cursor: pointer;
  width: 44px; height: 44px; padding: 11px 10px;
  flex-direction: column; justify-content: space-between;
  flex: 0 0 auto;
}
.menu-toggle span { display: block; height: 2px; background: #fff; border-radius: 2px; }
.menu-backdrop { display: none; }

.tabs {
  display: flex; flex-wrap: wrap; gap: 0.25rem;
  background: #1d2939; padding: 0.4rem 1rem;
  position: sticky; top: 52px; z-index: 40;
}
.tabs button {
  background: transparent; border: 0; color: #cbd5e1;
  padding: 0.5rem 0.8rem; border-radius: 6px; cursor: pointer; font-size: 0.85rem;
}
.tabs button:hover { background: #2b3a4f; color: #fff; }
.tabs button.active { background: var(--accent); color: #fff; }

main { max-width: 1200px; margin: 0 auto; padding: 1.2rem; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 1rem 1.2rem; margin: 1rem 0;
}
.danger-zone { border-left: 4px solid var(--danger); }

h2 { margin: 0.4rem 0 0.8rem; }
h3 { margin: 0.6rem 0; }
.muted { color: var(--muted); }
.small { font-size: 0.8rem; }
.row { display: flex; gap: 0.6rem; align-items: center; flex-wrap: wrap; margin: 0.6rem 0; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem 1.2rem; }
.span2 { grid-column: span 2; }
label { display: flex; flex-direction: column; gap: 0.3rem; font-size: 0.85rem; font-weight: 600; }
label.check { flex-direction: row; align-items: center; gap: 0.5rem; }
input, textarea, select {
  font: inherit; padding: 0.5rem 0.6rem; border: 1px solid var(--line);
  border-radius: 6px; background: #fff; color: var(--ink); font-weight: 400;
}
input.wide, textarea.wide { width: 100%; }
textarea { font-family: ui-monospace, monospace; font-size: 0.85rem; }

.btn {
  display: inline-block; font: inherit; cursor: pointer;
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  padding: 0.5rem 1rem; border-radius: 6px; text-decoration: none;
}
.btn:hover { background: #eef2f7; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: #1748b5; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-small { padding: 0.3rem 0.6rem; font-size: 0.8rem; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.table { width: 100%; border-collapse: collapse; background: #fff; font-size: 0.85rem; margin: 0.6rem 0; }
.table th, .table td { border: 1px solid var(--line); padding: 0.45rem 0.6rem; text-align: left; vertical-align: top; }
.table th { background: #eef2f7; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; }
.table td pre { margin: 0; white-space: pre-wrap; font-size: 0.78rem; max-width: 480px; max-height: 160px; overflow: auto; }

.badge {
  display: inline-block; padding: 0.25rem 0.6rem; border-radius: 999px;
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.04em;
}
.badge-on { background: #d3f0db; color: var(--ok); }
.badge-off { background: #f6d7d5; color: var(--danger); }
.badge-healthy { background: #d3f0db; color: var(--ok); }
.badge-degraded { background: #fdeed3; color: var(--warn); }
.badge-down { background: #f6d7d5; color: var(--danger); }
.badge-unknown { background: #e4e7ec; color: var(--muted); }

.confirm-box {
  background: #fff8e6; border: 1px solid #e5c15c; border-radius: 8px;
  padding: 1rem; margin: 1rem 0;
}
.confirm-box input { font-family: ui-monospace, monospace; }

.overlay {
  position: fixed; inset: 0; background: rgba(16, 24, 40, 0.75);
  display: flex; align-items: center; justify-content: center; z-index: 100;
}
.hidden { display: none !important; }
.login-card { text-align: center; max-width: 360px; }
.login-card .btn-primary { margin-top: 1rem; }

.toast {
  position: fixed; bottom: 1.2rem; right: 1.2rem; z-index: 200;
  background: #101828; color: #fff; padding: 0.8rem 1.2rem;
  border-radius: 8px; max-width: 420px; box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.toast.error { background: var(--danger); }

pre.result {
  background: #101828; color: #d7e3f4; padding: 1rem; border-radius: 8px;
  overflow: auto; font-size: 0.8rem; max-height: 480px;
}
.kv { display: grid; grid-template-columns: 220px 1fr; gap: 0.3rem 1rem; font-size: 0.88rem; }
.kv dt { font-weight: 600; color: var(--muted); }
.kv dd { margin: 0; }

.switch-row { display: flex; justify-content: space-between; align-items: center; padding: 0.4rem 0; border-bottom: 1px solid var(--line); }
.switch-row:last-child { border-bottom: 0; }

@media (max-width: 760px) {
  .grid-2 { grid-template-columns: 1fr; }
  .span2 { grid-column: span 1; }

  /* Topbar: sticky again (compact, email hidden) so the menu button is always reachable. */
  .topbar { position: sticky; top: 0; flex-wrap: wrap; gap: 0.4rem 0.8rem; padding: 0.5rem 0.8rem; }
  .topbar-right { flex-wrap: wrap; gap: 0.5rem; }
  #user-email { display: none; }
  .menu-toggle { display: inline-flex; }

  /* Tabs become a slide-in drawer. */
  .tabs {
    position: fixed; top: 0; left: 0; bottom: 0;
    width: min(80vw, 320px); z-index: 90;
    flex-direction: column; flex-wrap: nowrap; align-items: stretch;
    overflow-y: auto; overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    padding: 0.75rem 0.5rem; gap: 0.15rem;
    transform: translateX(-105%);
    transition: transform 0.22s ease-out;
  }
  .tabs.open { transform: none; box-shadow: 8px 0 30px rgba(0, 0, 0, 0.35); }
  .tabs button {
    flex: 0 0 auto; width: 100%;
    text-align: left; padding: 0.85rem 1rem; font-size: 0.95rem;
    border-radius: 8px;
  }
  .menu-backdrop {
    display: block;
    position: fixed; inset: 0; z-index: 80;
    background: rgba(16, 24, 40, 0.6);
  }

  main { padding: 0.8rem; }
  h2 { font-size: 1.25rem; }
  .card { padding: 0.9rem; margin: 0.8rem 0; }

  /* Wide tables scroll horizontally instead of breaking the layout. */
  table.table {
    display: block; max-width: 100%;
    overflow-x: auto; -webkit-overflow-scrolling: touch;
  }
  .table th, .table td { padding: 0.5rem 0.6rem; }
  .table td pre { max-width: 70vw; }

  /* Comfortable touch targets. */
  .btn { min-height: 44px; padding: 0.65rem 1.1rem; }
  .btn-small { min-height: 40px; padding: 0.45rem 0.8rem; font-size: 0.85rem; }
  input, select, textarea { min-height: 44px; }
  label.check { min-height: 44px; }

  /* Key/value lists stack. */
  .kv { grid-template-columns: 1fr; }
  .kv dt { margin-top: 0.4rem; }

  /* Toast spans the bottom edge. */
  .toast { left: 0.8rem; right: 0.8rem; bottom: 0.8rem; max-width: none; }

  .login-card { margin: 1rem; max-width: none; }
  .overlay { padding: 1rem; }

  pre.result { font-size: 0.75rem; }
  .confirm-box input { width: 100%; }
}