*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0d0d0d;
  --bg-el: #141414;
  --bg-hover: #1c1c1c;
  --border: #242424;
  --text: #e5e5e5;
  --muted: #555;
  --green: #4ade80;
  --red: #f87171;
  --blue: #60a5fa;
  --amber: #fbbf24;
  --purple: #a78bfa;
  --sidebar-w: 200px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

/* ── Layout ─────────────────────────────────────────────── */
.app-layout { display: flex; height: 100vh; }

.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-el);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
}
.logo-icon { font-size: 18px; }

.sidebar-nav { flex: 1; padding: 8px 0; }

.nav-link {
  display: block;
  padding: 10px 16px;
  color: var(--muted);
  text-decoration: none;
  transition: color .15s, background .15s;
  border-radius: 4px;
  margin: 2px 8px;
}
.nav-link:hover { background: var(--bg-hover); color: var(--text); }
.nav-link.active { background: var(--bg-hover); color: var(--blue); }

.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
}

.ws-indicator { font-size: 10px; }
.ws-connected { color: var(--green); }
.ws-connecting { color: var(--amber); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.3} }

.main-content { flex: 1; overflow-y: auto; padding: 24px; }

/* ── Page ────────────────────────────────────────────────── */
.page-header {
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.page-title { font-size: 20px; font-weight: 600; }

/* ── Stats grid ──────────────────────────────────────────── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--bg-el);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
}
.stat-value { font-size: 28px; font-weight: 700; margin-bottom: 4px; }
.stat-label {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .05em;
}

/* ── Content grid ────────────────────────────────────────── */
.content-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ── Cards ───────────────────────────────────────────────── */
.card {
  background: var(--bg-el);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.card-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .05em;
}
.card-body { padding: 0; }

/* ── Tables ──────────────────────────────────────────────── */
.table { width: 100%; border-collapse: collapse; }
.table th {
  padding: 10px 12px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .05em;
  border-bottom: 1px solid var(--border);
}
.table td { padding: 10px 12px; border-bottom: 1px solid var(--border); }
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: var(--bg-hover); }

/* ── Badges ──────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 500;
}
.badge-green { background: rgba(74,222,128,.15); color: var(--green); }
.badge-red   { background: rgba(248,113,113,.15); color: var(--red); }
.badge-amber { background: rgba(251,191,36,.15);  color: var(--amber); }
.badge-blue  { background: rgba(96,165,250,.15);  color: var(--blue); }
.badge-muted { background: rgba(85,85,85,.15);    color: var(--muted); }

/* ── Status dot ──────────────────────────────────────────── */
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; }
.dot-online  { background: var(--green); box-shadow: 0 0 0 2px rgba(74,222,128,.2); }
.dot-offline { background: var(--muted); }
.dot-error   { background: var(--red); }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-el);
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s, border-color .15s;
  font-family: inherit;
}
.btn:hover { background: var(--bg-hover); border-color: #333; }
.btn-primary {
  background: var(--blue); border-color: var(--blue); color: #000; font-weight: 500;
}
.btn-primary:hover { background: #93bbfc; border-color: #93bbfc; }
.btn-danger { color: var(--red); }
.btn-danger:hover { background: rgba(248,113,113,.1); border-color: rgba(248,113,113,.3); }
.btn-sm { padding: 4px 10px; font-size: 12px; }

/* ── Forms ───────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-label {
  display: block;
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 8px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: border-color .15s;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus { border-color: var(--blue); }
.form-textarea { resize: vertical; min-height: 80px; }

/* ── Event list (telemetry feed) ─────────────────────────── */
.event-list { max-height: 320px; overflow-y: auto; }
.event-row {
  display: grid;
  grid-template-columns: 120px 80px 1fr 70px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  gap: 8px;
  align-items: center;
}
.event-row:last-child { border-bottom: none; }
.event-row:hover { background: var(--bg-hover); }

/* ── Typography helpers ──────────────────────────────────── */
.mono {
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: 11px;
}
.ts { color: var(--muted); font-size: 11px; white-space: nowrap; }
.text-muted { color: var(--muted); }
.text-green { color: var(--green); }
.text-red   { color: var(--red); }
.text-blue  { color: var(--blue); }
.text-purple { color: var(--purple); }

/* ── Back link ───────────────────────────────────────────── */
.back-link {
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 16px;
}
.back-link:hover { color: var(--text); }

/* ── Info grid (device detail) ───────────────────────────── */
.info-grid { display: grid; grid-template-columns: 120px 1fr; gap: 8px 16px; padding: 16px; }
.info-key { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .05em; display: flex; align-items: center; }

/* ── Rule card ───────────────────────────────────────────── */
.rule-card {
  background: var(--bg-el);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.rule-card-body { flex: 1; }
.rule-name { font-weight: 600; }
.rule-desc { color: var(--muted); font-size: 12px; margin-top: 4px; }
.rule-trigger { font-size: 11px; color: var(--blue); margin-top: 6px; font-family: monospace; }

/* ── Toggle switch ───────────────────────────────────────── */
.toggle { position: relative; width: 36px; height: 20px; cursor: pointer; flex-shrink: 0; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; inset: 0;
  background: var(--muted);
  border-radius: 20px;
  transition: .2s;
}
.toggle-slider::before {
  content: '';
  position: absolute;
  height: 14px; width: 14px;
  left: 3px; bottom: 3px;
  background: white;
  border-radius: 50%;
  transition: .2s;
}
.toggle input:checked + .toggle-slider { background: var(--green); }
.toggle input:checked + .toggle-slider::before { transform: translateX(16px); }

/* ── Alerts ──────────────────────────────────────────────── */
.alert { padding: 10px 14px; border-radius: 6px; font-size: 13px; }
.alert-success { background: rgba(74,222,128,.1); color: var(--green); border: 1px solid rgba(74,222,128,.2); }
.alert-error   { background: rgba(248,113,113,.1); color: var(--red);   border: 1px solid rgba(248,113,113,.2); }

/* ── Empty state ─────────────────────────────────────────── */
.empty-state { text-align: center; padding: 48px 24px; color: var(--muted); }

/* ── Scrollbars ──────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ── Button variants ─────────────────────────────────────── */
.btn-danger {
  background: rgba(248,113,113,.15);
  color: var(--red);
  border: 1px solid rgba(248,113,113,.25);
}
.btn-danger:hover { background: rgba(248,113,113,.25); }

/* ── Login page ──────────────────────────────────────────── */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg);
}
.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--bg-el);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 36px 32px;
}
.login-logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: .05em;
  margin-bottom: 8px;
  color: var(--text);
}

/* ── Sidebar logout link ─────────────────────────────────── */
.nav-logout {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 6px;
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  transition: background .15s, color .15s;
  margin-top: auto;
}
.nav-logout:hover { background: var(--bg-hover); color: var(--red); }