:root {
  --bg: #0b0f14;
  --bg-elevated: #121820;
  --bg-card: #161d27;
  --border: #243041;
  --text: #e8edf4;
  --text-muted: #8b9cb3;
  --accent: #3b9eff;
  --accent-dim: #1e4a73;
  --ok: #22c55e;
  --ok-bg: rgba(34, 197, 94, 0.12);
  --warn: #f59e0b;
  --warn-bg: rgba(245, 158, 11, 0.12);
  --bad: #ef4444;
  --bad-bg: rgba(239, 68, 68, 0.12);
  --radius: 12px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, "Cascadia Code", "SF Mono", monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(59, 158, 255, 0.15), transparent),
    radial-gradient(ellipse 60% 40% at 100% 100%, rgba(34, 197, 94, 0.06), transparent);
}

.app {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.header {
  margin-bottom: 1.75rem;
}

.brand-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #6366f1);
  box-shadow: 0 4px 20px rgba(59, 158, 255, 0.35);
}

h1 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.subtitle {
  margin: 0.2rem 0 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.header-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.meta {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.btn {
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.875rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.btn:hover:not(:disabled) {
  background: var(--bg-elevated);
  border-color: var(--accent-dim);
}

.btn:disabled {
  opacity: 0.55;
  cursor: wait;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 500;
}

.btn-primary:hover:not(:disabled) {
  filter: brightness(1.08);
}

.summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
}

.stat-card .value {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.stat-card .label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

.stat-card.ok .value { color: var(--ok); }
.stat-card.warn .value { color: var(--warn); }
.stat-card.bad .value { color: var(--bad); }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.search input {
  width: min(320px, 100%);
  padding: 0.55rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font-size: 0.9rem;
}

.search input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.tabs {
  display: flex;
  gap: 0.35rem;
  background: var(--bg-card);
  padding: 0.25rem;
  border-radius: 10px;
  border: 1px solid var(--border);
}

.tab {
  border: none;
  background: transparent;
  color: var(--text-muted);
  padding: 0.45rem 0.85rem;
  border-radius: 7px;
  font-size: 0.85rem;
  cursor: pointer;
}

.tab:hover {
  color: var(--text);
}

.tab.active {
  background: var(--bg-elevated);
  color: var(--text);
  font-weight: 500;
}

.panel {
  display: none;
}

.panel.active {
  display: block;
}

.client-grid {
  display: grid;
  gap: 1.25rem;
}

.client-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.client-card header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 1rem 1.15rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
}

.client-card h2 {
  margin: 0;
  font-size: 1.1rem;
  text-transform: capitalize;
}

.client-badges {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.badge {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
}

.badge.ok { background: var(--ok-bg); color: var(--ok); }
.badge.bad { background: var(--bad-bg); color: var(--bad); }
.badge.neutral { background: rgba(139, 156, 179, 0.15); color: var(--text-muted); }

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

th,
td {
  text-align: left;
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.status-pill.ok {
  background: var(--ok-bg);
  color: var(--ok);
}

.status-pill.bad {
  background: var(--bad-bg);
  color: var(--bad);
}

.status-pill.warn {
  background: var(--warn-bg);
  color: var(--warn);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

a.domain-link {
  color: var(--accent);
  text-decoration: none;
}

a.domain-link:hover {
  text-decoration: underline;
}

code,
.path {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  word-break: break-all;
}

.empty {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

.footer {
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer code {
  font-size: 0.75rem;
}

.toast {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  max-width: 360px;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
  font-size: 0.875rem;
  z-index: 100;
}

.toast.error {
  border-color: var(--bad);
  color: #fecaca;
}

.loading-overlay {
  opacity: 0.55;
  pointer-events: none;
}

@media (max-width: 640px) {
  .app { padding: 1rem 0.75rem 2rem; }
  th:nth-child(4),
  td:nth-child(4) { display: none; }
}