:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-2: #f0f2f5;
  --border: #e2e5ea;
  --text: #1b2330;
  --muted: #6b7482;
  --accent: #4f46e5;
  --accent-weak: #eef0fe;
  --monitored: #d7e8ff;
  --movement: #1f8f4d;
  --event-movement: #16a34a;
  --event-no-movement: #dc2626;
  --ok: #16a34a;
  --ok-weak: #e7f6ec;
  --warn: #b45309;
  --warn-weak: #fdf1e3;
  --danger: #dc2626;
  --danger-weak: #fdeaea;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.05), 0 1px 3px rgba(16, 24, 40, 0.08);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

#app.loading {
  display: grid;
  place-items: center;
  height: 100vh;
  color: var(--muted);
}

a { color: var(--accent); text-decoration: none; }
h1, h2, h3 { margin: 0; font-weight: 650; }
h1 { font-size: 20px; }
h2 { font-size: 16px; }
h3 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }

/* ---------- layout ---------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 24px;
  height: 60px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.brand .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); }
.topbar nav { display: flex; gap: 4px; margin-left: 12px; }
.topbar nav a {
  padding: 8px 14px; border-radius: 8px; color: var(--muted); font-weight: 550;
}
.topbar nav a.active { background: var(--accent-weak); color: var(--accent); }
.topbar .spacer { flex: 1; }
.topbar .who { color: var(--muted); }
.tz-switch { display: flex; gap: 4px; }
.tz-switch .tz-btn.active { background: var(--accent-weak); color: var(--accent); border-color: var(--accent); }

.container { max-width: 1080px; margin: 0 auto; padding: 24px; }

/* ---------- cards ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card + .card { margin-top: 16px; }
.card .card-head {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 20px; border-bottom: 1px solid var(--border);
}
.card .card-body { padding: 20px; }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 20px; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px 18px; box-shadow: var(--shadow); }
.stat .n { font-size: 28px; font-weight: 700; }
.stat .l { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }

/* ---------- toolbar ---------- */
.toolbar { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.toolbar .grow { flex: 1; }

/* ---------- forms ---------- */
input[type="text"], input[type="password"], input[type="search"] {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border);
  border-radius: 8px; background: var(--surface); color: var(--text); font-size: 14px;
}
select {
  padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--surface); color: var(--text); font-size: 14px;
}
input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-weak); }
label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.field + .field { margin-top: 14px; }

button {
  font: inherit; font-weight: 600; cursor: pointer; border: 1px solid transparent;
  padding: 9px 16px; border-radius: 8px; background: var(--accent); color: #fff;
}
button:hover { filter: brightness(1.05); }
button:disabled { opacity: 0.55; cursor: default; }
button.secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
button.danger { background: var(--danger); }
button.ghost { background: transparent; color: var(--accent); }
button.sm { padding: 6px 12px; font-size: 13px; }

/* ---------- table ---------- */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--border); }
th { font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em; color: var(--muted); }
tbody tr { cursor: pointer; }
tbody tr:hover { background: var(--surface-2); }
td.mono, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

/* ---------- badges ---------- */
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.active, .badge.lifecycle-active { background: var(--accent-weak); color: var(--accent); }
.badge.inactive, .badge.lifecycle-inactive { background: var(--surface-2); color: var(--muted); }
.badge.online { background: var(--ok-weak); color: var(--ok); }
.badge.offline { background: var(--danger-weak); color: var(--danger); }
.badge.connection::before {
  content: ""; display: inline-block; width: 7px; height: 7px;
  border-radius: 50%; margin-right: 6px; vertical-align: 1px;
  background: currentColor;
}
.badge.revoked { background: var(--danger-weak); color: var(--danger); }
.badge.development, .badge.neutral { background: var(--surface-2); color: var(--muted); }
.badge.warn { background: var(--warn-weak); color: var(--warn); }

/* ---------- key/value grid ---------- */
.kv { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px 32px; }
.kv .k { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em; }
.kv .v { font-size: 14px; word-break: break-all; }

/* ---------- schedule editor ---------- */
.hours { display: grid; grid-template-columns: repeat(12, 1fr); gap: 6px; }
.hours .hr {
  text-align: center; padding: 8px 0; border-radius: 6px; border: 1px solid var(--border);
  background: var(--surface); font-size: 12px; user-select: none; cursor: pointer;
}
.hours .hr.on { background: var(--accent); color: #fff; border-color: var(--accent); }
.sched-note { margin: 0 0 14px; font-size: 13px; line-height: 1.55; }
.window-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 10px; }
.window-row label { margin: 0 4px 0 0; min-width: 72px; color: var(--muted); }
.window-row .win-end { min-width: 88px; }

/* ---------- heatmap ---------- */
.heatmap { overflow-x: auto; }
.heat-grid { display: grid; grid-template-columns: 70px repeat(24, 1fr); gap: 3px; min-width: 640px; }
.heat-grid .corner {}
.heat-grid .hlabel { font-size: 10px; color: var(--muted); text-align: center; }
.heat-grid .dlabel { font-size: 12px; color: var(--muted); display: flex; align-items: center; }
.heat-cell { aspect-ratio: 1 / 1; border-radius: 3px; background: var(--surface-2); position: relative; }
.heat-cell.monitored { background: var(--monitored); }
.heat-cell.on::after {
  content: ""; position: absolute; width: 42%; height: 42%; border-radius: 50%;
  left: 50%; top: 50%; transform: translate(-50%, -50%);
  background: var(--movement);
}
.heat-cell.event-movement { box-shadow: inset 0 0 0 2px var(--event-movement); }
.heat-cell.event-no-movement { box-shadow: inset 0 0 0 2px var(--event-no-movement); }
.legend { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 12px; margin-top: 12px; flex-wrap: wrap; }
.legend .box { width: 14px; height: 14px; border-radius: 3px; }

/* ---------- modal ---------- */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(16, 24, 40, 0.45);
  display: grid; place-items: center; z-index: 50; padding: 20px;
}
.modal { width: 100%; max-width: 440px; background: var(--surface);
  border-radius: var(--radius); box-shadow: 0 20px 40px rgba(16,24,40,0.2); }
.modal .card-head { justify-content: space-between; }
.modal .card-body { padding: 20px; }
.modal .actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

/* ---------- login ---------- */
.login-wrap { display: grid; place-items: center; min-height: 100vh; padding: 20px; }
.login { width: 100%; max-width: 360px; }
.login .card-body { padding: 28px; }
.login .brand { justify-content: center; margin-bottom: 20px; font-size: 18px; }

/* ---------- misc ---------- */
.muted { color: var(--muted); }
.empty { text-align: center; color: var(--muted); padding: 40px 20px; }
.error { color: var(--danger); font-size: 13px; margin-top: 10px; min-height: 18px; }
.back { display: inline-flex; align-items: center; gap: 6px; margin-bottom: 14px; color: var(--muted); cursor: pointer; }
.row-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--text); color: #fff; padding: 10px 18px; border-radius: 8px;
  box-shadow: var(--shadow); z-index: 100; font-weight: 550;
}

@media (max-width: 720px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .kv { grid-template-columns: 1fr; }
}