:root, .app {
  color-scheme: light;
  --surface-1: #fcfcfb;
  --surface-page: #f9f9f7;
  --surface-card: #ffffff;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #898781;
  --gridline: #e1e0d9;
  --baseline: #c3c2b7;
  --border: rgba(11,11,11,0.10);
  --series-1: #2a78d6;
  --series-2: #008300;
  --series-3: #e87ba4;
  --series-4: #eda100;
  --series-5: #1baf7a;
  --series-6: #eb6834;
  --series-7: #4a3aa7;
  --series-8: #e34948;
  --good: #0ca30c;
  --warning: #b9790f;
  --serious: #ec835a;
  --critical: #d03b3b;
  --good-bg: #e7f6e7;
  --warning-bg: #fdf2df;
  --critical-bg: #fbe7e6;
}
html[data-theme="dark"] .app, html[data-theme="dark"] {
  color-scheme: dark;
  --surface-1: #1a1a19;
  --surface-page: #0d0d0d;
  --surface-card: #201f1e;
  --text-primary: #ffffff;
  --text-secondary: #c3c2b7;
  --text-muted: #9a9990;
  --gridline: #2c2c2a;
  --baseline: #383835;
  --border: rgba(255,255,255,0.10);
  --series-1: #3987e5;
  --series-2: #1fa61f;
  --series-3: #d55181;
  --series-4: #c98500;
  --series-5: #199e70;
  --series-6: #d95926;
  --series-7: #9085e9;
  --series-8: #e66767;
  --good: #0ca30c;
  --warning: #fab219;
  --serious: #ec835a;
  --critical: #e66767;
  --good-bg: #10321a;
  --warning-bg: #382c10;
  --critical-bg: #3a1a19;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--surface-page);
  color: var(--text-primary);
}
header.topbar {
  position: sticky; top: 0; z-index: 20;
  background: var(--surface-card);
  border-bottom: 1px solid var(--border);
  padding: 14px 22px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand .logo {
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, var(--series-1), var(--series-5));
  display: flex; align-items: center; justify-content: center;
  color: white; font-weight: 700; font-size: 15px; flex-shrink: 0;
}
.brand h1 { font-size: 16px; margin: 0; }
.brand p { font-size: 12.5px; margin: 2px 0 0; color: var(--text-secondary); }
.topbar-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.btn {
  font: inherit; font-size: 13px; font-weight: 600; cursor: pointer;
  border-radius: 8px; padding: 8px 14px; border: 1px solid var(--border);
  background: var(--surface-card); color: var(--text-primary);
  display: inline-flex; align-items: center; gap: 6px; white-space: nowrap;
}
.btn:hover { filter: brightness(0.97); }
html[data-theme="dark"] .btn:hover { filter: brightness(1.15); }
.btn-primary { background: var(--series-1); color: white; border-color: var(--series-1); }
.btn-danger { color: var(--critical); }
.btn-sm { padding: 5px 10px; font-size: 12px; border-radius: 6px; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.user-chip {
  display: flex; align-items: center; gap: 8px; padding: 6px 10px 6px 6px;
  border: 1px solid var(--border); border-radius: 999px; font-size: 12.5px;
}
.user-chip .avatar {
  width: 24px; height: 24px; border-radius: 50%; background: var(--series-7); color: white;
  display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 700;
}
.user-chip .role-tag { color: var(--text-muted); font-size: 11px; }
nav.tabs {
  display: flex; gap: 4px; padding: 10px 22px 0; background: var(--surface-page);
  border-bottom: 1px solid var(--border); overflow-x: auto;
}
.tab-btn {
  font: inherit; font-size: 13.5px; font-weight: 600; cursor: pointer;
  background: transparent; border: none; color: var(--text-secondary);
  padding: 10px 14px; border-bottom: 3px solid transparent; white-space: nowrap;
}
.tab-btn.active { color: var(--series-1); border-bottom-color: var(--series-1); }
main { padding: 22px; max-width: 1320px; margin: 0 auto; }
.tab-panel[hidden] { display: none; }
.notice {
  background: var(--warning-bg); border: 1px solid var(--border); border-radius: 10px;
  padding: 10px 14px; font-size: 13px; color: var(--text-primary); margin-bottom: 18px;
  display: flex; gap: 8px; align-items: flex-start;
}
.notice.error { background: var(--critical-bg); }
.notice.success { background: var(--good-bg); }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 20px; }
@media (max-width: 900px) { .stat-grid { grid-template-columns: repeat(2, 1fr); } }
.stat-tile {
  background: var(--surface-card); border: 1px solid var(--border); border-radius: 12px;
  padding: 16px 18px;
}
.stat-tile .label { font-size: 12.5px; color: var(--text-secondary); font-weight: 600; }
.stat-tile .value { font-size: 24px; font-weight: 700; margin-top: 6px; font-variant-numeric: tabular-nums; }
.stat-tile .sub { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.card {
  background: var(--surface-card); border: 1px solid var(--border); border-radius: 12px;
  padding: 18px; margin-bottom: 18px;
}
.card h2 { font-size: 15px; margin: 0 0 4px; }
.card .card-sub { font-size: 12.5px; color: var(--text-secondary); margin: 0 0 14px; }
.chart-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 900px) { .chart-row { grid-template-columns: 1fr; } }
.chart-box { position: relative; height: 260px; }
.section-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; gap: 10px; flex-wrap: wrap; }
.section-head h2 { margin: 0; font-size: 16px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
  text-align: left; font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.03em;
  color: var(--text-muted); font-weight: 700; padding: 8px 10px; border-bottom: 1px solid var(--gridline);
  white-space: nowrap;
}
tbody td { padding: 9px 10px; border-bottom: 1px solid var(--gridline); vertical-align: middle; }
tbody tr:hover { background: var(--surface-1); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.badge {
  display: inline-flex; align-items: center; gap: 4px; font-size: 11.5px; font-weight: 700;
  padding: 3px 9px; border-radius: 999px;
}
.badge-good { background: var(--good-bg); color: var(--good); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-critical { background: var(--critical-bg); color: var(--critical); }
.badge-neutral { background: var(--surface-1); color: var(--text-secondary); border: 1px solid var(--border); }
.row-actions { display: flex; gap: 6px; }
.icon-btn {
  border: none; background: transparent; cursor: pointer; color: var(--text-muted); font-size: 13px;
  padding: 4px 6px; border-radius: 6px;
}
.icon-btn:hover { background: var(--surface-1); color: var(--text-primary); }
.icon-btn.danger:hover { color: var(--critical); }
.icon-btn:disabled { opacity: 0.35; cursor: not-allowed; }
.modal-overlay {
  position: fixed; inset: 0; background: rgba(11,11,11,0.45); z-index: 100;
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal {
  background: var(--surface-card); border-radius: 14px; padding: 22px; width: 100%; max-width: 460px;
  max-height: 88vh; overflow-y: auto; border: 1px solid var(--border);
}
.modal h3 { margin: 0 0 4px; font-size: 16px; }
.modal .modal-sub { font-size: 12.5px; color: var(--text-secondary); margin: 0 0 16px; }
.form-grid { display: grid; gap: 12px; }
.form-row label { display: block; font-size: 12.5px; font-weight: 600; margin-bottom: 5px; color: var(--text-secondary); }
.form-row input, .form-row select, .form-row textarea {
  width: 100%; font: inherit; font-size: 13.5px; padding: 8px 10px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--surface-1); color: var(--text-primary);
}
.form-error { font-size: 12.5px; color: var(--critical); margin-top: -4px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 18px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.legend-row { display: flex; gap: 16px; flex-wrap: wrap; font-size: 12px; color: var(--text-secondary); margin-top: 8px; }
.legend-dot { width: 9px; height: 9px; border-radius: 2px; display: inline-block; margin-right: 5px; }
.empty-state { text-align: center; padding: 30px 10px; color: var(--text-muted); font-size: 13px; }
.subtabs { display: flex; gap: 6px; margin-bottom: 14px; }
.subtab-btn { font: inherit; font-size: 12.5px; font-weight: 600; padding: 7px 12px; border-radius: 8px; border: 1px solid var(--border); background: var(--surface-1); color: var(--text-secondary); cursor: pointer; }
.subtab-btn.active { background: var(--series-1); border-color: var(--series-1); color: white; }
footer.foot { text-align: center; padding: 24px 12px 40px; font-size: 12px; color: var(--text-muted); }
.helptext { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* Login screen */
.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px;
  background: var(--surface-page);
}
.login-card {
  width: 100%; max-width: 380px; background: var(--surface-card); border: 1px solid var(--border);
  border-radius: 16px; padding: 32px 28px;
}
.login-card .logo {
  width: 48px; height: 48px; border-radius: 12px;
  background: linear-gradient(135deg, var(--series-1), var(--series-5));
  display: flex; align-items: center; justify-content: center; color: white; font-weight: 700; margin-bottom: 16px;
}
.login-card h1 { font-size: 18px; margin: 0 0 4px; }
.login-card p.sub { font-size: 13px; color: var(--text-secondary); margin: 0 0 22px; }
.login-card .btn-primary { width: 100%; justify-content: center; padding: 10px; font-size: 14px; }
#appRoot[hidden], #loginRoot[hidden] { display: none; }