:root {
  --bg: #0d1220; --card: #151c30; --card2: #1b2440; --line: #26304a;
  --text: #c8d4ee; --muted: #8ea0c0; --ok: #22c55e; --warn: #eab308;
  --danger: #ef4444; --accent: #f97316;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.5 system-ui, "Segoe UI", Roboto, sans-serif;
}
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 20px; background: var(--card); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 5;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand small { color: var(--muted); font-weight: 400; }
.dot { width: 12px; height: 12px; border-radius: 50%; background: var(--muted); }
.dot.on { background: var(--ok); box-shadow: 0 0 8px var(--ok); }
.dot.idle { background: var(--warn); }
.dot.off { background: var(--danger); }
.conn { color: var(--muted); font-size: 13px; }
.topnav { display: flex; gap: 6px; }
.topnav a { padding: 7px 14px; border-radius: 8px; text-decoration: none; color: var(--muted); font-size: 14px; font-weight: 600; }
.topnav a.active, .topnav a:hover { background: var(--card2); color: var(--text); }

.grid {
  display: grid; gap: 16px; padding: 20px; max-width: 1200px; margin: 0 auto;
  grid-template-columns: repeat(3, 1fr);
}
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 18px; min-width: 0;
}
.card h2 { margin: 0 0 14px; font-size: 14px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.card.wide { grid-column: span 2; }
.card.chat { grid-column: span 1; }

.tempval { font-size: 56px; font-weight: 700; line-height: 1; }
.tempval small { font-size: 22px; color: var(--muted); margin-left: 4px; }
.badge {
  display: inline-block; margin-top: 12px; padding: 5px 12px; border-radius: 999px;
  font-size: 13px; font-weight: 600; background: var(--card2);
}
.badge.normal { color: var(--ok); }
.badge.cold { color: #38bdf8; }
.badge.hot_warning { color: var(--warn); }
.badge.overheat, .badge.sensor_fault { color: #fff; background: var(--danger); }
.badge.warming { color: var(--accent); }

.relays { display: flex; flex-direction: column; gap: 10px; }
.relay {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 14px; border-radius: 10px; background: var(--card2); border-left: 4px solid var(--muted);
}
.relay.on { border-left-color: var(--ok); }
.relay .rstate { font-weight: 700; color: var(--muted); }
.relay.on .rstate { color: var(--ok); }
.engine { margin-top: 12px; color: var(--muted); font-size: 14px; }

.controls { display: flex; flex-direction: column; gap: 10px; }
.btn {
  padding: 11px 14px; border: 0; border-radius: 10px; cursor: pointer;
  font-weight: 600; font-size: 14px; color: #08110a;
}
.btn.ok { background: var(--ok); }
.btn.warn { background: var(--warn); }
.btn.danger { background: var(--danger); color: #fff; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.hint { margin: 14px 0 0; color: var(--muted); font-size: 12px; word-break: break-word; }

.exp-dates { display: flex; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.exp-dates label { font-size: 12px; color: var(--muted); display: flex; flex-direction: column; gap: 4px; }
.exp-dates input { background: var(--bg); border: 1px solid var(--line); color: var(--text); border-radius: 8px; padding: 8px; font-size: 13px; }
.exp-btns { display: flex; flex-direction: column; gap: 8px; }
.exp-btns .btn { font-size: 13px; }

.events { list-style: none; margin: 0; padding: 0; max-height: 240px; overflow-y: auto; }
.ev { padding: 8px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
.ev span { color: var(--muted); margin-right: 8px; font-variant-numeric: tabular-nums; }
.ev.warning { color: var(--warn); }
.ev.danger { color: var(--danger); }

.chat { display: flex; flex-direction: column; }
.chat-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.chat-head h2 { margin: 0; }
.voicetoggle { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); cursor: pointer; text-transform: none; letter-spacing: 0; }
.voicetoggle input { accent-color: var(--accent); }
.btn.mic { background: var(--card2); color: var(--text); padding: 11px 12px; flex: 0 0 auto; }
.btn.mic:hover { background: var(--line); }
.btn.mic.listening { background: var(--danger); color: #fff; animation: micpulse 1s ease-in-out infinite; }
.btn.mic:disabled { opacity: .4; cursor: not-allowed; }
@keyframes micpulse { 0%,100% { box-shadow: 0 0 0 0 rgba(239,68,68,.5); } 50% { box-shadow: 0 0 0 6px rgba(239,68,68,0); } }
.chatlog { flex: 1; min-height: 180px; max-height: 300px; overflow-y: auto; display: flex; flex-direction: column; gap: 8px; margin-bottom: 12px; }
.msg { padding: 9px 12px; border-radius: 10px; max-width: 85%; font-size: 14px; word-wrap: break-word; }
.msg.user { align-self: flex-end; background: var(--accent); color: #1a0d02; }
.msg.bot { align-self: flex-start; background: var(--card2); }
.msg.pending { opacity: .6; }
.msg .src { display: block; margin-top: 4px; font-size: 10px; text-transform: uppercase; color: var(--muted); }
.chatform { display: flex; gap: 8px; }
.chatform input {
  flex: 1; padding: 11px 12px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--bg); color: var(--text); font-size: 14px;
}

/* Header kanan: pemilih perangkat (multi-Pi) + status koneksi */
.headright { display: flex; align-items: center; gap: 14px; }
.devpick { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); }
.devpick select {
  background: var(--bg); border: 1px solid var(--line); color: var(--text);
  border-radius: 8px; padding: 7px 10px; font-size: 13px; font-weight: 600; cursor: pointer;
}

/* Toggle AI otonom */
.aitoggle { display: flex; align-items: center; gap: 10px; margin-top: 14px; font-size: 13px; color: var(--muted); cursor: pointer; }
.aitoggle b { color: var(--text); font-weight: 700; }
.switch { position: relative; width: 42px; height: 22px; flex: 0 0 auto; }
.switch input { position: absolute; opacity: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.switch i {
  position: absolute; inset: 0; background: var(--card2); border: 1px solid var(--line);
  border-radius: 999px; transition: background .15s;
}
.switch i::after {
  content: ""; position: absolute; top: 2px; left: 2px; width: 16px; height: 16px;
  border-radius: 50%; background: var(--muted); transition: transform .15s, background .15s;
}
.switch input:checked + i { background: rgba(34,197,94,.25); border-color: var(--ok); }
.switch input:checked + i::after { transform: translateX(20px); background: var(--ok); }

@media (max-width: 820px) {
  .grid { grid-template-columns: 1fr; }
  .card.wide, .card.chat { grid-column: span 1; }
  .topbar { flex-wrap: wrap; gap: 10px; }
}

/* Banner peringatan OVERHEAT */
.alarmbar {
  max-width: 1200px; margin: 14px auto 0; padding: 14px 18px;
  background: rgba(208,59,59,.16); border: 1px solid rgba(208,59,59,.55);
  border-radius: 10px; color: #ff9b9b; font-size: 14px; line-height: 1.5;
  animation: alarmpulse 1s ease-in-out infinite;
}
.alarmbar strong { color: #ffdada; }
.alarmbar.hidden { display: none; }
@keyframes alarmpulse { 0%,100% { opacity: 1; } 50% { opacity: .55; } }

/* Header kartu dgn tombol di kanan */
.cardhead { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.cardhead h2 { margin: 0; }
.cardhead .btn { padding: 6px 12px; font-size: 13px; text-decoration: none; }