:root {
  --bg: #f1f5f9;
  --surface: #ffffff;
  --surface-alt: #f8fafc;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-muted: #64748b;
  --accent: #2563eb;
  --accent-contrast: #ffffff;
  --accent-soft: #eff6ff;
  --success-bg: #dcfce7;
  --success-text: #166534;
  --warning-bg: #fef3c7;
  --warning-text: #92400e;
  --critical-bg: #fee2e2;
  --critical-text: #991b1b;
  --unknown-bg: #e2e8f0;
  --unknown-text: #475569;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 8px 24px -12px rgba(15, 23, 42, .12);
  --radius: 12px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b1220;
    --surface: #131c2e;
    --surface-alt: #1a2438;
    --border: #263049;
    --text: #e6ebf5;
    --text-muted: #93a1bd;
    --accent: #5b9bff;
    --accent-contrast: #061024;
    --accent-soft: rgba(91, 155, 255, .12);
    --success-bg: rgba(34, 197, 94, .16);
    --success-text: #6ee7a3;
    --warning-bg: rgba(245, 158, 11, .18);
    --warning-text: #fbbf24;
    --critical-bg: rgba(248, 113, 113, .16);
    --critical-text: #fca5a5;
    --unknown-bg: rgba(148, 163, 184, .16);
    --unknown-text: #c3cddf;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 28px -12px rgba(0, 0, 0, .55);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0b1220;
  --surface: #131c2e;
  --surface-alt: #1a2438;
  --border: #263049;
  --text: #e6ebf5;
  --text-muted: #93a1bd;
  --accent: #5b9bff;
  --accent-contrast: #061024;
  --accent-soft: rgba(91, 155, 255, .12);
  --success-bg: rgba(34, 197, 94, .16);
  --success-text: #6ee7a3;
  --warning-bg: rgba(245, 158, 11, .18);
  --warning-text: #fbbf24;
  --critical-bg: rgba(248, 113, 113, .16);
  --critical-text: #fca5a5;
  --unknown-bg: rgba(148, 163, 184, .16);
  --unknown-text: #c3cddf;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 28px -12px rgba(0, 0, 0, .55);
  color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  margin: 0;
  transition: background-color .15s ease, color .15s ease;
}

.app-shell { margin: auto; max-width: 1720px; padding: 1.5rem 2rem 3rem; }

.topbar {
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding: 1.1rem 1.5rem;
}

.topbar-brand { align-items: center; display: flex; gap: 1rem; }
.brand-icon {
  align-items: center;
  background: var(--accent-soft);
  border-radius: 12px;
  display: flex;
  font-size: 1.4rem;
  height: 3rem;
  justify-content: center;
  width: 3rem;
}

.topbar h1 { font-size: 1.2rem; margin: 0; }
.status-row { align-items: center; display: flex; gap: .45rem; margin-top: .3rem; }
.status-dot {
  background: #22c55e;
  border-radius: 999px;
  box-shadow: 0 0 0 3px var(--success-bg);
  flex-shrink: 0;
  height: .5rem;
  width: .5rem;
  animation: status-pulse 2s ease-in-out infinite;
}
@keyframes status-pulse { 0%, 100% { opacity: 1; } 50% { opacity: .4; } }
.status-line { color: var(--text-muted); font-size: .85rem; margin: 0; }

.nav-link {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: .85rem;
  font-weight: 600;
  padding: .5rem .85rem;
  text-decoration: none;
  transition: background-color .15s ease, border-color .15s ease, color .15s ease;
}
.nav-link:hover { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }

.topbar-actions { align-items: center; display: flex; gap: .6rem; }

button {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  padding: .5rem .85rem;
  transition: background-color .15s ease, border-color .15s ease;
}
button:hover { border-color: var(--accent); }
button:disabled { cursor: not-allowed; opacity: .5; }

#refresh { background: var(--accent); border-color: var(--accent); color: var(--accent-contrast); }
#refresh:hover { filter: brightness(1.05); }

.icon-button { font-size: 1rem; line-height: 1; padding: .5rem .6rem; }

.account-filter-label { color: var(--text-muted); font-size: .85rem; font-weight: 600; }
.account-filter {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  padding: .5rem .85rem;
}
.account-filter:hover { border-color: var(--accent); }

main { display: flex; flex-direction: column; gap: 1.5rem; }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem 1.25rem 1.5rem;
}

.panel h2 { font-size: 1rem; margin: 0 0 .25rem; }
.panel-meta { color: var(--text-muted); font-size: .85rem; margin: 0 0 1rem; }

.table-wrap { border: 1px solid var(--border); border-radius: 10px; max-height: 480px; overflow: auto; }
table { border-collapse: collapse; min-width: 760px; width: 100%; }
th, td { border-bottom: 1px solid var(--border); padding: .65rem .75rem; text-align: left; white-space: nowrap; }
th { background: var(--surface-alt); color: var(--text-muted); font-size: .75rem; letter-spacing: .02em; position: sticky; text-transform: uppercase; top: 0; z-index: 1; }
tbody tr:hover { background: var(--surface-alt); }
tbody tr:last-child td { border-bottom: none; }

.pagination { align-items: center; display: flex; gap: .75rem; margin-top: .85rem; }
.pagination span { color: var(--text-muted); font-size: .85rem; }

dialog {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  max-width: min(90vw, 800px);
}
dialog pre { max-height: 60vh; overflow: auto; white-space: pre-wrap; }
dialog::backdrop { background: rgba(15, 23, 42, .5); }

.kpis { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.kpi-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  border-top: 4px solid var(--kpi-color, var(--accent));
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .3rem;
  padding: 1.5rem 1.25rem 1.75rem;
  text-align: center;
  transition: transform .15s ease, box-shadow .15s ease;
}
.kpi-card:hover { box-shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 16px 32px -14px var(--kpi-color, var(--accent)); transform: translateY(-2px); }
.kpi-icon {
  align-items: center;
  background: color-mix(in srgb, var(--kpi-color, var(--accent)) 16%, transparent);
  border-radius: 999px;
  display: flex;
  font-size: 1.35rem;
  height: 2.75rem;
  justify-content: center;
  margin-bottom: .35rem;
  width: 2.75rem;
}
.kpi-label { color: var(--text-muted); font-size: .78rem; font-weight: 600; letter-spacing: .04em; margin: 0; text-transform: uppercase; }
.kpi-value { color: var(--kpi-color, var(--text)); font-size: 2.5rem; font-weight: 800; letter-spacing: -.02em; line-height: 1.1; margin: 0; }
.kpi-card--accent { --kpi-color: var(--accent); }
.kpi-card--success { --kpi-color: var(--success-text); }
.kpi-card--critical { --kpi-color: var(--critical-text); }
.kpi-card--battery { --kpi-color: #f59e0b; }

.placeholder-banner {
  background: var(--surface-alt);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  padding: .8rem 1.1rem;
}

.note { color: var(--text-muted); font-size: .85rem; margin: 0; }

.badge { border-radius: 999px; display: inline-block; font-size: .78rem; font-weight: 600; padding: .25rem .65rem; }
.badge-normal { background: var(--success-bg); color: var(--success-text); }
.badge-warning { background: var(--warning-bg); color: var(--warning-text); }
.badge-critical { background: var(--critical-bg); color: var(--critical-text); }
.badge-unknown { background: var(--unknown-bg); color: var(--unknown-text); }

.kpi-status { font-size: .75rem; font-weight: 600; margin: 0; }
.kpi-status--normal { color: var(--success-text); }
.kpi-status--warning { color: var(--warning-text); }
.kpi-status--critical { color: var(--critical-text); }
.kpi-status--unknown { color: var(--unknown-text); }

.login-shell {
  align-items: center;
  background: var(--bg);
  display: flex;
  justify-content: center;
  min-height: 100vh;
  padding: 1.5rem;
}

.login-card { max-width: 380px; width: 100%; }

.login-brand { align-items: center; display: flex; gap: 1rem; margin-bottom: 1.25rem; }
.login-brand h1 { font-size: 1.1rem; margin: 0; }
.login-subtitle { color: var(--text-muted); font-size: .85rem; margin: .2rem 0 0; }

.login-field { display: flex; flex-direction: column; gap: .35rem; margin-bottom: 1rem; }
.login-field label { font-size: .85rem; font-weight: 600; }
.login-field input {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font: inherit;
  padding: .6rem .75rem;
}
.login-field input:focus { border-color: var(--accent); outline: none; }

.login-card button[type="submit"] {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-contrast);
  width: 100%;
}
.login-card button[type="submit"]:hover { filter: brightness(1.05); }

.login-error {
  background: var(--critical-bg);
  border-radius: 8px;
  color: var(--critical-text);
  display: none;
  font-size: .85rem;
  margin: 0 0 1rem;
  padding: .6rem .75rem;
}
.login-error--visible { display: block; }