/* ── Design Tokens ──────────────────────────────────────────── */
:root {
  --canvas:     #080809;
  --surface-1:  #111113;
  --surface-2:  #18181b;
  --surface-3:  #1f1f23;
  --hairline:   #27272a;
  --hairline-s: #1c1c1f;
  --ink:        #fafafa;
  --ink-2:      #e4e4e7;
  --ink-muted:  #71717a;
  --ink-faint:  #3f3f46;
  --accent:     #22d3ee;       /* cyan — engineered, not corporate */
  --accent-dim: rgba(34,211,238,.12);
  --success:    #4ade80;
  --warn:       #fbbf24;
  --danger:     #f87171;
  --g-1:        #a78bfa;
  --g-2:        #38bdf8;

  --r-xs:  3px;
  --r-sm:  6px;
  --r-md:  8px;
  --r-lg:  12px;
  --r-xl:  16px;
  --r-xxl: 24px;
  --r-pill:100px;

  --font:  'Geist', 'Inter', sans-serif;
  --mono:  'Geist Mono', 'JetBrains Mono', ui-monospace, monospace;
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { color-scheme: dark; scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--canvas);
  color: var(--ink);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-feature-settings: 'cv01','cv05','cv09','cv11','ss03','ss07';
  line-height: 1.5;
  /* Subtle noise texture for depth */
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.025'/%3E%3C/svg%3E");
}

/* ── Nav ────────────────────────────────────────────────────── */
nav.top {
  height: 52px;
  display: flex;
  align-items: center;
  padding: 0 20px;
  border-bottom: 1px solid var(--hairline-s);
  background: rgba(8,8,9,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  gap: 0;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.wordmark {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.3px;
  color: var(--ink);
  margin-right: 28px;
  user-select: none;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}
.wordmark::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  flex-shrink: 0;
}
.wordmark span { color: var(--ink-muted); font-weight: 400; }

.nav-tabs { display: flex; gap: 1px; flex: 1; }

.nav-tab {
  padding: 5px 13px;
  border-radius: var(--r-pill);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: -0.1px;
  color: var(--ink-muted);
  cursor: pointer;
  transition: background .1s, color .1s;
  border: none;
  background: transparent;
  display: flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  white-space: nowrap;
}
.nav-tab:hover { color: var(--ink-2); background: var(--surface-2); }
.nav-tab.active {
  background: var(--surface-2);
  color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--hairline);
}

.nav-right { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.mono-xs { font-family: var(--mono); font-size: 11px; color: var(--ink-muted); }

/* ── Page ────────────────────────────────────────────────────── */
.page {
  flex: 1;
  padding: 28px 24px;
  max-width: 1160px;
  width: 100%;
  margin: 0 auto;
}

/* ── Card ────────────────────────────────────────────────────── */
.card {
  background: var(--surface-1);
  border: 1px solid var(--hairline);
  border-radius: var(--r-xl);
  padding: 20px 22px;
  margin-bottom: 16px;
}
.card-eyebrow {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 6px;
}
.card-title {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -.4px;
  color: var(--ink);
}
.card-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

/* ── Separator ───────────────────────────────────────────────── */
.sep { height: 1px; background: var(--hairline); margin: 14px 0; }

/* ── Form ────────────────────────────────────────────────────── */
.field { display: flex; flex-direction: column; gap: 5px; }
.f-label {
  font-size: 11px;
  font-weight: 500;
  color: var(--ink-muted);
  letter-spacing: .02em;
}

input, select, textarea {
  background: var(--surface-2);
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  padding: 7px 11px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink);
  outline: none;
  transition: border-color .15s, box-shadow .15s;
  width: 100%;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(34,211,238,.1);
}
input[type=checkbox] { width: auto; }
select { cursor: pointer; }
textarea { resize: vertical; font-family: var(--mono); }

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  padding: 7px 14px;
  border-radius: var(--r-md);
  font-family: var(--font);
  font-size: 12.5px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: opacity .1s, background .1s, box-shadow .1s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  letter-spacing: -.1px;
  text-decoration: none;
}
.btn:disabled { opacity: .35; cursor: not-allowed; pointer-events: none; }
.btn-primary {
  background: var(--accent);
  color: #08080a;
  font-weight: 600;
}
.btn-primary:hover { box-shadow: 0 0 14px rgba(34,211,238,.35); }
.btn-secondary {
  background: var(--surface-2);
  color: var(--ink-2);
  border: 1px solid var(--hairline);
}
.btn-secondary:hover { background: var(--surface-3); border-color: var(--ink-faint); }
.btn-danger { background: rgba(248,113,113,.15); color: var(--danger); border: 1px solid rgba(248,113,113,.25); }
.btn-danger:hover { background: rgba(248,113,113,.25); }
.btn-sm { padding: 4px 11px; font-size: 11.5px; }
.btn-row { display: flex; gap: 7px; flex-wrap: wrap; margin-top: 12px; align-items: center; }

/* ── Badge ───────────────────────────────────────────────────── */
.badge {
  padding: 2px 9px;
  border-radius: var(--r-pill);
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  display: inline-block;
  white-space: nowrap;
}
.badge-green { background: rgba(74,222,128,.12); color: var(--success); }
.badge-red   { background: rgba(248,113,113,.12); color: var(--danger); }
.badge-warn  { background: rgba(251,191,36,.12);  color: var(--warn); }
.badge-dim   { background: var(--surface-2); color: var(--ink-muted); border: 1px solid var(--hairline); }
.badge-cyan  { background: rgba(34,211,238,.12); color: var(--accent); }
.badge-btn {
  cursor: pointer;
  border: none;
  font-family: var(--font);
  transition: box-shadow .15s, background .15s;
}
.badge-btn:hover { box-shadow: 0 0 10px rgba(34,211,238,.3); }

/* ── Status dot ──────────────────────────────────────────────── */
.dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--ink-faint);
  display: inline-block;
  flex-shrink: 0;
  transition: background .3s, box-shadow .3s;
}
.dot.green {
  background: var(--success);
  box-shadow: 0 0 6px var(--success);
  animation: pulse-green 2s ease-in-out infinite;
}
.dot.red   { background: var(--danger); box-shadow: 0 0 4px var(--danger); }
.dot.warn  { background: var(--warn); }

@keyframes pulse-green {
  0%,100% { box-shadow: 0 0 4px var(--success); }
  50%      { box-shadow: 0 0 10px var(--success), 0 0 18px rgba(74,222,128,.3); }
}

/* ── Log box ─────────────────────────────────────────────────── */
.log-box {
  font-family: var(--mono);
  font-size: 11.5px;
  line-height: 1.65;
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  padding: 11px 14px;
  height: 220px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
  scrollbar-width: thin;
  scrollbar-color: var(--hairline) transparent;
  color: var(--ink-muted);
}
.log-box::-webkit-scrollbar { width: 3px; }
.log-box::-webkit-scrollbar-thumb { background: var(--hairline); border-radius: 2px; }
.log-box .ok   { color: var(--success); }
.log-box .err  { color: var(--danger); }
.log-box .hi   { color: var(--accent); }
.log-box .warn { color: var(--warn); }
.log-box .dim  { color: var(--ink-faint); }

/* ── Grid util ───────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 10px; }
@media (max-width: 860px) {
  .grid-2,.grid-3,.grid-4 { grid-template-columns: 1fr; }
}

/* ── Device card ─────────────────────────────────────────────── */
.device-card {
  background: var(--surface-1);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 13px 15px;
  cursor: pointer;
  transition: border-color .12s, background .12s;
  position: relative;
  overflow: hidden;
}
.device-card:hover    { border-color: var(--ink-faint); background: var(--surface-2); }
.device-card.selected { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent-dim), inset 0 0 20px rgba(34,211,238,.03); }
.dc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px,1fr)); gap: 10px; }
.dc-class { font-size: 10.5px; color: var(--ink-muted); margin-bottom: 3px; font-family: var(--mono); }
.dc-name  { font-size: 13px; font-weight: 600; letter-spacing: -.2px; margin-bottom: 2px; }
.dc-id    { font-family: var(--mono); font-size: 10.5px; color: var(--ink-faint); }
.dc-meta  { font-size: 11px; color: var(--ink-faint); margin-top: 6px; }

/* ── Pre / JSON ──────────────────────────────────────────────── */
pre.json {
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  padding: 11px 13px;
  font-family: var(--mono);
  font-size: 11.5px;
  line-height: 1.6;
  overflow: auto;
  max-height: 260px;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--ink-2);
}

/* ── Table ───────────────────────────────────────────────────── */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th {
  text-align: left;
  padding: 8px 12px;
  color: var(--ink-muted);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: .07em;
  border-bottom: 1px solid var(--hairline);
  font-weight: 600;
  white-space: nowrap;
}
td { padding: 9px 12px; border-bottom: 1px solid var(--hairline-s); vertical-align: middle; }
tr:hover td { background: var(--surface-2); }
tr.selected td { background: rgba(34,211,238,.05); }
.mono { font-family: var(--mono); font-size: 11.5px; }

/* ── Config overlay ──────────────────────────────────────────── */
.cfg-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.65);
  z-index: 200;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}
.cfg-overlay.open { display: flex; }
.cfg-panel {
  background: var(--surface-1);
  border: 1px solid var(--hairline);
  border-radius: var(--r-xxl);
  padding: 26px;
  width: 460px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: 0 24px 60px rgba(0,0,0,.6), 0 0 0 1px rgba(34,211,238,.06);
  animation: modal-in .15s ease;
}
@keyframes modal-in {
  from { opacity:0; transform: scale(.97) translateY(4px); }
  to   { opacity:1; transform: scale(1) translateY(0); }
}
.cfg-title { font-size: 15px; font-weight: 600; letter-spacing: -.4px; }

/* ── Alarm severity ──────────────────────────────────────────── */
.sev-critical { color: #f87171; }
.sev-major    { color: #fb923c; }
.sev-minor    { color: var(--warn); }
.sev-warning  { color: #60a5fa; }
.sev-info     { color: var(--ink-faint); }

/* ── Alarm row ───────────────────────────────────────────────── */
.alarm-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 13px;
  border-radius: var(--r-md);
  border: 1px solid var(--hairline);
  background: var(--surface-1);
  margin-bottom: 5px;
  cursor: pointer;
  transition: border-color .1s, background .1s;
  font-size: 12.5px;
}
.alarm-row:hover    { border-color: var(--ink-faint); background: var(--surface-2); }
.alarm-row.selected { border-color: var(--accent); background: var(--accent-dim); }
.alarm-code { font-family: var(--mono); font-weight: 600; flex: 1.2; min-width: 0; font-size: 12px; }
.alarm-msg  { color: var(--ink-muted); flex: 2; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.alarm-dev  { font-family: var(--mono); font-size: 10.5px; color: var(--ink-faint); white-space: nowrap; }

/* ── Page load animation ─────────────────────────────────────── */
.page > * {
  animation: fadein .25s ease both;
}
.page > *:nth-child(1) { animation-delay: .02s; }
.page > *:nth-child(2) { animation-delay: .06s; }
.page > *:nth-child(3) { animation-delay: .10s; }
.page > *:nth-child(4) { animation-delay: .14s; }
.page > *:nth-child(5) { animation-delay: .18s; }
@keyframes fadein {
  from { opacity:0; transform: translateY(6px); }
  to   { opacity:1; transform: translateY(0); }
}