:root{
  --app-bg:#f3f6fb;
  --surface:#ffffff;
  --surface-2:#f8fafc;
  --ink:#172033;
  --muted:#64748b;
  --line:#dbe3ee;
  --brand:#0b3b5f;
  --brand-2:#0f6aa6;
  --accent:#16a34a;
  --danger:#dc2626;
  --warning:#f59e0b;
  --radius:18px;
}
*{box-sizing:border-box}
body{
  min-height:100vh;
  color:var(--ink);
  background:
    radial-gradient(circle at top left, rgba(15,106,166,.12), transparent 34rem),
    linear-gradient(180deg,#f8fbff 0%,var(--app-bg) 100%);
  font-family: Inter, "Noto Sans KR", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
.app-shell{min-height:100vh;display:flex;flex-direction:column}
.navbar.app-nav{
  background:linear-gradient(90deg,#08283f 0%,#0b3b5f 48%,#0f6aa6 100%);
  box-shadow:0 12px 30px rgba(8,40,63,.18);
}
.navbar-brand{font-weight:800;letter-spacing:.02em}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;margin-right:.55rem;
  background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.28);
}
.nav-link{font-weight:650;opacity:.88;border-radius:999px;padding:.48rem .9rem!important}
.nav-link:hover,.nav-link.active{background:rgba(255,255,255,.15);opacity:1}
.user-chip{display:inline-flex;align-items:center;gap:.5rem;color:#eaf6ff;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:.35rem .75rem;font-size:.88rem}
.page-wrap{width:100%;max-width:1500px;margin:0 auto;padding:1.5rem}
.page-hero{display:flex;justify-content:space-between;gap:1rem;align-items:flex-end;margin-bottom:1.25rem}
.eyebrow{font-size:.75rem;font-weight:800;letter-spacing:.12em;color:var(--brand-2);text-transform:uppercase;margin-bottom:.25rem}
.page-title{margin:0;font-weight:850;letter-spacing:-.03em;color:#102033}
.page-subtitle{margin:.25rem 0 0;color:var(--muted)}
.card,.metric-card,.panel{
  border:1px solid rgba(148,163,184,.24)!important;
  border-radius:var(--radius)!important;
  background:rgba(255,255,255,.94);
  box-shadow:0 16px 38px rgba(15,23,42,.07);
}
.card-header{border-bottom:1px solid var(--line);background:linear-gradient(180deg,#fff,#f8fafc);border-radius:var(--radius) var(--radius) 0 0!important;font-weight:800}
.card-title{font-weight:820;color:#172033}
.metric-card{padding:1.15rem;height:100%}
.metric-label{color:var(--muted);font-size:.82rem;font-weight:750;text-transform:uppercase;letter-spacing:.06em}
.metric-value{font-size:1.7rem;font-weight:850;letter-spacing:-.03em;color:#0f172a}
.info-row{display:flex;justify-content:space-between;gap:1rem;padding:.45rem 0;border-bottom:1px dashed #e2e8f0;color:#334155}
.info-row:last-child{border-bottom:0}.info-label{color:var(--muted);font-weight:650}.info-value{font-weight:750;text-align:right}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));border:0;box-shadow:0 8px 18px rgba(15,106,166,.2)}
.btn-outline-primary{border-color:#b8d4e8;color:var(--brand-2)}
.btn-outline-primary:hover{background:var(--brand-2);border-color:var(--brand-2)}
.table-card{overflow:hidden}.table{margin-bottom:0}.table thead th{background:#f1f5f9;color:#475569;font-size:.78rem;text-transform:uppercase;letter-spacing:.04em;border-bottom:1px solid var(--line);padding:.85rem .75rem}.table tbody td{padding:.8rem .75rem;vertical-align:middle}.table tbody tr:hover{background:#f8fbff}
.status-badge{display:inline-flex;align-items:center;gap:.35rem;border-radius:999px;padding:.28rem .62rem;font-size:.78rem;font-weight:800}.status-on{background:#fee2e2;color:#991b1b}.status-off{background:#dcfce7;color:#166534}.status-neutral{background:#e0f2fe;color:#075985}
.dot{width:.48rem;height:.48rem;border-radius:999px;background:currentColor;display:inline-block}.value-list .list-group-item{border-color:#e8eef6;padding:.7rem .25rem}.value-name{font-size:.86rem;color:#475569;word-break:break-all}.value-number{font-weight:850;color:#0f172a}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:.9rem}.section-heading h5{margin:0;font-weight:850}.soft-label{background:#edf6ff;color:#075985;border:1px solid #cfe8ff;border-radius:999px;padding:.35rem .7rem;font-size:.8rem;font-weight:800}.map-frame{width:100%;height:320px;border:0;border-radius:16px;overflow:hidden}.pagination .page-link{border-color:#dbe5ef;color:#0b5f92}.pagination .active .page-link{background:var(--brand-2);border-color:var(--brand-2)}
.login-bg{min-height:100vh;background:radial-gradient(circle at 20% 10%,rgba(22,163,74,.16),transparent 28rem),linear-gradient(135deg,#08283f,#0b3b5f 48%,#f3f6fb 48%)}.login-card{border:0;border-radius:24px;box-shadow:0 28px 80px rgba(2,6,23,.24);overflow:hidden}.login-panel{background:linear-gradient(160deg,#08283f,#0f6aa6);color:#fff;padding:2rem}.product-badge{display:inline-flex;border:1px solid rgba(255,255,255,.32);background:rgba(255,255,255,.14);border-radius:999px;padding:.35rem .75rem;font-size:.78rem;font-weight:800;letter-spacing:.06em}.form-control,.form-select{border-radius:12px;border-color:#d5deea;padding:.65rem .8rem}.form-control:focus,.form-select:focus{border-color:#73b7e7;box-shadow:0 0 0 .25rem rgba(15,106,166,.12)}
@media(max-width:768px){.page-wrap{padding:1rem}.page-hero{align-items:flex-start;flex-direction:column}.navbar .container-fluid{align-items:flex-start}.user-chip{margin-top:.5rem}.table-responsive{border-radius:14px}}
.trend-canvas-wrap{height:480px;min-height:360px;width:100%;position:relative}
.trend-canvas-wrap canvas{display:block;width:100%;height:100%}

/* Readability refresh: reusable top pagination and cleaner dense tables */
.table-toolbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:.75rem;
  padding:.8rem 1rem;
  background:linear-gradient(180deg,#ffffff,#f8fbff);
  border-bottom:1px solid var(--line);
}
.top-pagination .pagination{flex-wrap:wrap;gap:.15rem}
.top-pagination .page-link{min-width:2rem;text-align:center;font-weight:750}
.table tbody tr:nth-child(even){background:rgba(248,250,252,.58)}
.table code{font-size:.82rem;white-space:normal;word-break:break-all}
.card.table-card{box-shadow:0 18px 44px rgba(15,23,42,.08)}
@media(max-width:768px){
  .table-toolbar{align-items:flex-start;flex-direction:column}
  .top-pagination .pagination{max-width:100%;overflow-x:auto}
}

/* Alarm settings: clearer tab separation and mobile readability */
.alarm-hero{align-items:flex-start}.alarm-search{background:rgba(255,255,255,.82);border:1px solid rgba(148,163,184,.22);border-radius:18px;padding:.9rem;box-shadow:0 10px 28px rgba(15,23,42,.06)}
.alarm-card-header{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap;padding:1rem 1.25rem!important}.alarm-tab-panel{padding:1.1rem 1.25rem 1.25rem;background:linear-gradient(180deg,#fff,#f8fbff);border-bottom:1px solid var(--line)}.tab-section-label{font-size:.78rem;font-weight:850;color:#64748b;text-transform:uppercase;letter-spacing:.08em;margin-bottom:.5rem}.engine-tab-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.7rem}.engine-tab{display:flex;align-items:center;justify-content:space-between;gap:.75rem;text-decoration:none;color:#334155;background:#fff;border:1px solid #dbe5ef;border-radius:16px;padding:.9rem 1rem;transition:.18s ease;box-shadow:0 8px 20px rgba(15,23,42,.04)}.engine-tab:hover{transform:translateY(-1px);border-color:#9cc9e8;background:#f8fbff}.engine-tab.active{color:#075985;border-color:#0f6aa6;background:linear-gradient(180deg,#eef8ff,#fff);box-shadow:0 12px 24px rgba(15,106,166,.13)}.engine-tab-title{font-weight:850}.engine-tab-count{font-size:.78rem;font-weight:800;color:#64748b;background:#f1f5f9;border-radius:999px;padding:.25rem .55rem;white-space:nowrap}.engine-tab.active .engine-tab-count{color:#075985;background:#dff2ff}.kind-toggle{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.7rem;max-width:680px}.kind-tab{display:flex;align-items:center;justify-content:space-between;gap:1rem;text-decoration:none;color:#334155;border:1px solid #dbe5ef;background:#fff;border-radius:16px;padding:.85rem 1rem;font-weight:850}.kind-tab strong{min-width:2.2rem;text-align:center;border-radius:999px;background:#f1f5f9;padding:.2rem .55rem}.kind-tab.active.alarm-kind{border-color:#ef4444;background:#fff5f5;color:#991b1b}.kind-tab.active.warning-kind{border-color:#0ea5e9;background:#f0f9ff;color:#075985}.alarm-list-toolbar{padding:1rem 1.25rem}.alarm-settings-table thead th{position:sticky;top:0;z-index:1}.alarm-settings-table .item-name{min-width:230px}.alarm-settings-table tbody td{border-bottom:1px solid #edf2f7}.alarm-table-wrap{max-height:none}
@media(max-width:992px){.engine-tab-grid{grid-template-columns:1fr}.kind-toggle{grid-template-columns:1fr;max-width:none}.alarm-search{width:100%}}
@media(max-width:768px){.alarm-card-header,.alarm-tab-panel,.alarm-list-toolbar{padding-left:1rem!important;padding-right:1rem!important}.alarm-settings-table thead{display:none}.alarm-settings-table,.alarm-settings-table tbody,.alarm-settings-table tr,.alarm-settings-table td{display:block;width:100%}.alarm-settings-table tbody tr{margin:.75rem 1rem;border:1px solid #dbe5ef;border-radius:16px;background:#fff!important;box-shadow:0 8px 22px rgba(15,23,42,.05);overflow:hidden}.alarm-settings-table tbody td{display:flex;justify-content:space-between;gap:1rem;text-align:right!important;padding:.72rem .9rem;border-bottom:1px dashed #e2e8f0}.alarm-settings-table tbody td::before{content:attr(data-label);font-weight:850;color:#64748b;text-align:left}.alarm-settings-table tbody td:last-child{border-bottom:0}.alarm-settings-table code{max-width:62%;text-align:right}}