:root {
  --bg: #f4f6f9;
  --surface: #ffffff;
  --surface-2: #eef1f5;
  --text: #0f172a;
  --muted: #64748b;
  --border: #dde3ea;
  --primary: #2563eb;
  --ok: #16a34a;
  --ok-bg: #e8f7ee;
  --warning: #d97706;
  --warning-bg: #fdf3e2;
  --danger: #dc2626;
  --danger-bg: #fdecec;
  --offline: #64748b;
  --offline-bg: #eceff3;
  --paused: #7c3aed;
  --paused-bg: #f1ebfd;
  --radius: 14px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1120;
    --surface: #131c2e;
    --surface-2: #1b263b;
    --text: #e5e9f0;
    --muted: #94a3b8;
    --border: #26324a;
    --primary: #60a5fa;
    --ok: #4ade80;
    --ok-bg: #12301f;
    --warning: #fbbf24;
    --warning-bg: #3a2c0c;
    --danger: #f87171;
    --danger-bg: #3d1515;
    --offline: #94a3b8;
    --offline-bg: #1e2737;
    --paused: #c4b5fd;
    --paused-bg: #2a2142;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", sans-serif;
  -webkit-font-smoothing: antialiased;
}
main {
  max-width: 1100px;
  margin: 0 auto;
  padding: max(12px, env(safe-area-inset-top)) 16px calc(32px + env(safe-area-inset-bottom));
}
h1, h2, h3 { margin: 0; line-height: 1.3; }
h2 { font-size: 17px; }
.muted { color: var(--muted); font-size: 13px; }
.error { color: var(--danger); margin: 0; }
[hidden] { display: none !important; }

.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 16px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}
.btn.small { padding: 6px 12px; font-size: 14px; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn.ghost { background: transparent; border-color: transparent; }
.btn:disabled { opacity: .6; cursor: default; }

/* 로그인 */
.login { min-height: 100dvh; display: grid; place-items: center; padding: 16px; }
.login-card {
  width: min(360px, 100%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: grid;
  gap: 12px;
  text-align: center;
  justify-items: center;
}
.login-card p { margin: 0; color: var(--muted); }
.login-card input, .login-card .btn { width: 100%; }
.password-form { display: grid; gap: 10px; }
.password-form p { margin: 0; }
input {
  font: inherit;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
}

/* 상단 */
.top { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 4px 0 12px; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 18px; }
.top-actions { display: flex; gap: 4px; }
.hint {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  margin: 0 0 12px;
  font-size: 14px;
}

/* 요약 */
.summary { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 8px; margin-bottom: 16px; }
.stat {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 10px 12px;
  text-align: left;
  font: inherit;
  color: inherit;
  cursor: pointer;
}
.stat b { display: block; font-size: 24px; line-height: 1.2; font-variant-numeric: tabular-nums; }
.stat span { font-size: 13px; color: var(--muted); }
.stat.active { outline: 2px solid var(--primary); outline-offset: -2px; }
.stat.danger b { color: var(--danger); }
.stat.warning b { color: var(--warning); }
.stat.offline b { color: var(--offline); }
.stat.paused b { color: var(--paused); }
@media (max-width: 420px) {
  .stat { padding: 8px 10px; }
  .stat b { font-size: 20px; }
}

/* 알림 */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 14px 6px;
  margin-bottom: 20px;
}
.panel h2 { margin-bottom: 8px; }
.count {
  display: inline-block;
  min-width: 22px;
  padding: 0 7px;
  border-radius: 11px;
  background: var(--danger);
  color: #fff;
  font-size: 13px;
  text-align: center;
  vertical-align: 2px;
}
.alerts { list-style: none; margin: 0; padding: 0; }
.alerts li {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 12px;
  align-items: center;
  padding: 10px 0;
  border-top: 1px solid var(--border);
}
.alerts li:first-child { border-top: 0; }
.alert-where { font-weight: 600; cursor: pointer; }
.alert-msg { grid-column: 1; font-size: 14px; overflow-wrap: anywhere; }
.alert-time { grid-column: 1; }
.alerts .btn { grid-column: 2; grid-row: 1 / span 3; }
.sev { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; vertical-align: 1px; }
.sev.high { background: var(--danger); }
.sev.medium { background: var(--warning); }
.sev.info { background: var(--muted); }
.sev.test { background: var(--paused); }

/* 호실 */
.section-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 10px; }
.rooms { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 12px; }
@media (max-width: 680px) { .rooms { grid-template-columns: 1fr; } }
.room {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
}
.room.has-danger { border-color: var(--danger); box-shadow: 0 0 0 1px var(--danger) inset; }
.room-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; margin-bottom: 10px; }
.room-head > div:first-child { flex: 1; min-width: 0; }
.room-title { font-weight: 700; font-size: 16px; }
.room-sub { font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }
.room-counts { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
.pill { font-size: 12px; padding: 2px 8px; border-radius: 999px; font-weight: 600; white-space: nowrap; }
.pill.ok { background: var(--ok-bg); color: var(--ok); }
.pill.warning { background: var(--warning-bg); color: var(--warning); }
.pill.danger { background: var(--danger-bg); color: var(--danger); }
.pill.offline { background: var(--offline-bg); color: var(--offline); }
.pill.paused { background: var(--paused-bg); color: var(--paused); }

.pcs { display: grid; grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); gap: 8px; }
.pc {
  border: 1px solid var(--border);
  border-left: 4px solid var(--ok);
  background: var(--surface-2);
  border-radius: 10px;
  padding: 8px 8px 6px;
  text-align: left;
  font: inherit;
  color: inherit;
  cursor: pointer;
  min-width: 0;
}
.pc b { display: block; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pc span { display: block; font-size: 11px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pc.warning { border-left-color: var(--warning); background: var(--warning-bg); }
.pc.danger { border-left-color: var(--danger); background: var(--danger-bg); }
.pc.offline { border-left-color: var(--offline); background: var(--offline-bg); }
.pc.offline b { color: var(--muted); }
.pc.paused { border-left-color: var(--paused); background: var(--paused-bg); }
.pc span.memo { color: var(--text); }
.empty { text-align: center; padding: 40px 0; }

/* 상세 */
dialog {
  width: min(640px, calc(100vw - 24px));
  max-height: calc(100dvh - 48px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  padding: 0;
}
dialog::backdrop { background: rgb(0 0 0 / .45); }
.dialog-head {
  position: sticky;
  top: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
#pc-body { padding: 12px 16px 20px; }
#pc-body h4 { margin: 18px 0 6px; font-size: 14px; color: var(--muted); }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 4px 14px; font-size: 14px; margin: 0; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; overflow-wrap: anywhere; }
.findings { margin: 0; padding: 0; list-style: none; font-size: 14px; }
.findings li { padding: 4px 0; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
td, th { text-align: left; padding: 6px 4px; border-top: 1px solid var(--border); vertical-align: top; overflow-wrap: anywhere; }
th { color: var(--muted); font-weight: 600; border-top: 0; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 20px; }
.status-banner { padding: 10px 12px; border-radius: 10px; font-weight: 600; margin-bottom: 8px; }
.status-banner.ok { background: var(--ok-bg); color: var(--ok); }
.status-banner.warning { background: var(--warning-bg); color: var(--warning); }
.status-banner.danger { background: var(--danger-bg); color: var(--danger); }
.status-banner.offline { background: var(--offline-bg); color: var(--offline); }
.status-banner.paused { background: var(--paused-bg); color: var(--paused); }