:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel2: #1c2330;
  --border: #2d3748;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #2f81f7;
  --accent2: #00d4aa;
  --danger: #f85149;
  --warn: #d29922;
  --ok: #3fb950;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: "Pretendard", -apple-system, "Noto Sans KR", "Segoe UI", sans-serif;
}
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 20px; background: var(--panel); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10; flex-wrap: wrap; gap: 10px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-icon { font-size: 32px; }
.brand h1 { margin: 0; font-size: 20px; }
.brand p { margin: 2px 0 0; font-size: 12px; color: var(--muted); }
.tabs { display: flex; gap: 8px; }
.tab {
  background: var(--panel2); color: var(--text); border: 1px solid var(--border);
  border-radius: 10px; padding: 9px 16px; font-size: 14px; cursor: pointer;
}
.tab.active { background: var(--accent); border-color: var(--accent); font-weight: 700; }
.tab:hover { border-color: var(--accent); }
.tabpage { display: none; }
.tabpage.active { display: block; }

.alarm {
  background: #3d1d1d; border-bottom: 2px solid var(--danger); color: #ffb4b4;
  padding: 10px 20px; display: flex; justify-content: space-between; align-items: center;
  font-weight: 600;
}
.alarm.hidden { display: none; }
.alarm button {
  background: var(--danger); color: #fff; border: none; border-radius: 8px;
  padding: 6px 14px; cursor: pointer; font-weight: 700;
}

.layout { display: flex; gap: 14px; padding: 14px; align-items: flex-start; }
.viewport-wrap { flex: 1; min-width: 0; position: relative; }
#viewport {
  width: 100%; height: calc(100vh - 190px); min-height: 480px;
  background: #05070c; border: 1px solid var(--border); border-radius: 12px; overflow: hidden;
}
.viewport-hint {
  position: absolute; bottom: 10px; left: 12px; font-size: 12px; color: var(--muted);
  background: rgba(0,0,0,.55); padding: 4px 10px; border-radius: 8px;
}
.dashboard { width: 400px; display: flex; flex-direction: column; gap: 12px; flex-shrink: 0; }
.panel {
  background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 14px;
}
.panel h2 { margin: 0 0 10px; font-size: 15px; display: flex; justify-content: space-between; align-items: center; }
.panel h3 { margin: 0 0 8px; font-size: 13px; color: var(--muted); }
.clock { font-size: 13px; color: var(--accent2); font-variant-numeric: tabular-nums; }
.btn-row { display: flex; gap: 8px; margin-bottom: 10px; flex-wrap: wrap; }
.btn {
  background: var(--panel2); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 14px; font-size: 13px; cursor: pointer;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); font-weight: 700; }
.btn.danger { background: #5a1f1f; border-color: var(--danger); color: #ffb4b4; }
.speed-row { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; font-size: 13px; }
.speed-row input { flex: 1; }
.note { font-size: 12px; color: var(--muted); line-height: 1.6; margin: 8px 0 0; }
.src { font-size: 11px; color: var(--muted); font-weight: 400; }

.ai-status { display: flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; margin-bottom: 10px; }
.dot { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.dot.ok { background: var(--ok); box-shadow: 0 0 8px var(--ok); }
.dot.warn { background: var(--warn); box-shadow: 0 0 8px var(--warn); }
.dot.bad { background: var(--danger); box-shadow: 0 0 8px var(--danger); animation: blink 0.8s infinite; }
@keyframes blink { 50% { opacity: 0.3; } }

.metric-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 10px; }
.metric { background: var(--panel2); border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; }
.m-label { display: block; font-size: 11px; color: var(--muted); }
.m-val { font-size: 17px; font-weight: 700; font-variant-numeric: tabular-nums; }
#tempChart { width: 100%; height: 140px; background: #0a0e14; border: 1px solid var(--border); border-radius: 8px; }

.event-log { list-style: none; margin: 0; padding: 0; max-height: 180px; overflow-y: auto; font-size: 12px; }
.event-log li { padding: 6px 8px; border-bottom: 1px solid var(--border); line-height: 1.5; }
.event-log li .t { color: var(--muted); margin-right: 6px; font-variant-numeric: tabular-nums; }
.event-log li.warn { color: #ffd479; }
.event-log li.bad { color: #ffb4b4; }
.event-log li.ok { color: #9df0c0; }

.trends-wrap { max-width: 1180px; margin: 0 auto; padding: 16px; display: flex; flex-direction: column; gap: 14px; }
.panel.wide { width: 100%; }
.chart-row { display: flex; gap: 16px; flex-wrap: wrap; }
.chart-box { flex: 1; min-width: 300px; }
.chart-box canvas { width: 100%; height: auto; background: #0a0e14; border: 1px solid var(--border); border-radius: 8px; }

.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 12px; }
.tcard { background: var(--panel2); border: 1px solid var(--border); border-radius: 10px; padding: 14px; }
.tcard h3 { margin: 0 0 8px; font-size: 14px; color: var(--text); }
.tcard p { margin: 0; font-size: 13px; color: var(--muted); line-height: 1.65; }
.tcard .tag { display: inline-block; font-size: 11px; background: #0a2a5e; color: #9ecbff; border-radius: 6px; padding: 2px 8px; margin-bottom: 8px; }
.tcard .badge-demo { display: inline-block; font-size: 11px; background: #0b3d2e; color: #7dFfc4; border-radius: 6px; padding: 2px 8px; margin-left: 6px; }

.timeline { display: flex; flex-direction: column; gap: 0; }
.tl-item { display: flex; gap: 14px; padding: 10px 0; border-left: 2px solid var(--accent); padding-left: 16px; margin-left: 8px; position: relative; }
.tl-item::before { content: ""; position: absolute; left: -7px; top: 14px; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); }
.tl-year { font-weight: 800; color: var(--accent2); min-width: 52px; }
.tl-item p { margin: 0; font-size: 13px; color: var(--muted); line-height: 1.6; }
.tl-item p b { color: var(--text); }

.stack-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; }
.stack { background: var(--panel2); border: 1px solid var(--border); border-radius: 10px; padding: 12px; }
.stack h4 { margin: 0 0 6px; font-size: 13px; }
.stack p { margin: 0; font-size: 12px; color: var(--muted); line-height: 1.6; }

.ref-list { margin: 0; padding-left: 18px; font-size: 13px; color: var(--muted); line-height: 2; }
.ref-list a { color: var(--accent); }

.ai-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 900px) { .ai-2col { grid-template-columns: 1fr; } .layout { flex-direction: column; } .dashboard { width: 100%; } }
.chat-log { height: 320px; overflow-y: auto; background: #0a0e14; border: 1px solid var(--border); border-radius: 8px; padding: 10px; margin-bottom: 10px; display: flex; flex-direction: column; gap: 8px; }
.msg { max-width: 88%; padding: 8px 12px; border-radius: 12px; font-size: 13px; line-height: 1.6; }
.msg.user { align-self: flex-end; background: var(--accent); color: #fff; }
.msg.bot { align-self: flex-start; background: var(--panel2); border: 1px solid var(--border); }
.chat-input-row { display: flex; gap: 8px; margin-bottom: 8px; }
.chat-input-row input { flex: 1; background: var(--panel2); border: 1px solid var(--border); border-radius: 8px; color: var(--text); padding: 9px 12px; font-size: 13px; }
.chip-row { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { font-size: 12px; background: var(--panel2); border: 1px solid var(--border); border-radius: 16px; padding: 5px 12px; cursor: pointer; color: var(--text); }
.chip:hover { border-color: var(--accent2); }
.report-out { background: #0a0e14; border: 1px solid var(--border); border-radius: 8px; padding: 12px; font-size: 12.5px; line-height: 1.7; white-space: pre-wrap; max-height: 380px; overflow-y: auto; font-family: inherit; }

footer { text-align: center; padding: 18px; color: var(--muted); font-size: 12px; border-top: 1px solid var(--border); }
footer a { color: var(--accent); }