:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --border: #e5e7eb;
  --text: #111827;
  --text-muted: #6b7280;
  --accent: #1f3b8b;
  --accent-soft: #eef2ff;
  --green: #047857;
  --green-soft: #d1fae5;
  --amber: #b45309;
  --amber-soft: #fef3c7;
  --red: #b91c1c;
  --red-soft: #fee2e2;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 4px 12px rgba(15, 23, 42, 0.08);
  --radius: 10px;
  --radius-sm: 6px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.4;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.muted { color: var(--text-muted); }

.loading-overlay {
  position: fixed; inset: 0;
  background: rgba(245, 246, 248, 0.85);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  z-index: 100;
  transition: opacity 200ms ease;
}
.loading-overlay.hidden { opacity: 0; pointer-events: none; }
.spinner {
  width: 32px; height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 800ms linear infinite;
  margin-bottom: 12px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.page-header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 24px 32px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: center;
}
.brand {
  font-weight: 700;
  font-size: 18px;
  color: var(--accent);
  letter-spacing: -0.01em;
}
.header-main h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.header-main .contact {
  margin: 4px 0 0;
  font-size: 14px;
  color: var(--text-muted);
}
.refresh-note {
  font-size: 12px;
  color: var(--text-muted);
  background: var(--accent-soft);
  padding: 6px 12px;
  border-radius: 999px;
  font-weight: 500;
}

main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 24px 40px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.data-section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  padding: 0;
}
.section-header h2 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.005em;
}

.status-badge {
  font-size: 12px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--border);
  color: var(--text-muted);
  white-space: nowrap;
}
.status-badge[data-status="live"] { background: var(--green-soft); color: var(--green); }
.status-badge[data-status="stale"] { background: var(--amber-soft); color: var(--amber); }
.status-badge[data-status="error"] { background: var(--red-soft); color: var(--red); }
.status-badge[data-status="loading"] { background: var(--accent-soft); color: var(--accent); }
.status-badge[data-status="empty"] { background: var(--border); color: var(--text-muted); }

.totals {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}
.totals .stat {
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}
.totals .stat .label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 500;
}
.totals .stat .value {
  font-size: 22px;
  font-weight: 600;
  margin-top: 4px;
  letter-spacing: -0.01em;
}

.campaigns-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
}
.campaign-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
}
.campaign-card .top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 12px;
}
.campaign-card .name {
  font-weight: 600;
  font-size: 14px;
  word-break: break-word;
}
.campaign-card .pill {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--border);
  color: var(--text-muted);
  white-space: nowrap;
  letter-spacing: 0.04em;
}
.campaign-card .pill[data-status="active"] { background: var(--green-soft); color: var(--green); }
.campaign-card .pill[data-status="paused"] { background: var(--amber-soft); color: var(--amber); }
.campaign-card .pill[data-status="completed"] { background: var(--accent-soft); color: var(--accent); }
.campaign-card .row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  font-size: 12px;
}
.campaign-card .row > div {
  display: flex;
  flex-direction: column;
}
.campaign-card .row .k {
  color: var(--text-muted);
  font-size: 11px;
}
.campaign-card .row .v {
  font-weight: 600;
  font-size: 15px;
  margin-top: 2px;
}
.campaign-card .row .v.bounce-warn { color: var(--red); }
.metric-refreshing { color: var(--text-muted); font-style: italic; font-weight: normal; font-size: 0.92em; }

.window-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}
.window-card {
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 16px;
}
.window-card h3 {
  margin: 0 0 10px;
  font-size: 13px;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  font-weight: 500;
}

.metric-list {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px 16px;
  font-size: 14px;
}
.metric-list dt { color: var(--text-muted); }
.metric-list dd { margin: 0; font-weight: 600; text-align: right; }

.subhead {
  font-size: 14px;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  font-weight: 500;
  margin: 16px 0 8px;
}

.recent-linkedin-activity {
  margin-top: 4px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.recent-linkedin-activity .subhead {
  margin-top: 0;
}
.recent-linkedin-activity .latest-event {
  font-size: 12px;
  margin: 8px 0 0;
}

.visitor-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
  font-size: 12px;
}
.show-more-btn {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--accent);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
}
.show-more-btn:hover {
  background: var(--accent-soft);
}
#pixel-visitors td {
  vertical-align: top;
}
#pixel-visitors .visitor-name {
  font-weight: 600;
}
#pixel-visitors .visitor-email {
  color: var(--text-muted);
  font-size: 12px;
  word-break: break-all;
}
#pixel-visitors .visitor-company {
  color: var(--text);
}
.visitor-hint {
  font-size: 12px;
  margin: 0 0 8px;
}
#pixel-visitors tr.visitor-row {
  cursor: pointer;
  transition: background 80ms ease;
}
#pixel-visitors tr.visitor-row:hover {
  background: var(--bg);
}
#pixel-visitors tr.visitor-row.expanded {
  background: var(--accent-soft);
}
#pixel-visitors tr.visitor-row.expanded td {
  border-bottom-color: transparent;
}
#pixel-visitors tr.visitor-expand {
  background: var(--bg);
}
#pixel-visitors tr.visitor-expand td {
  padding: 14px 24px 16px;
  border-bottom: 1px solid var(--border);
}
#pixel-visitors .expand-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 6px 24px;
  margin: 0;
  font-size: 13px;
}
#pixel-visitors .expand-grid dt {
  color: var(--text-muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 500;
  margin-top: 6px;
}
#pixel-visitors .expand-grid dd {
  margin: 2px 0 0;
  font-weight: 500;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th, td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
th {
  background: var(--bg);
  font-weight: 500;
  color: var(--text-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
tr:last-child td { border-bottom: none; }

.empty {
  text-align: center;
  color: var(--text-muted);
  padding: 24px 12px;
}

.error-banner {
  background: var(--red-soft);
  color: var(--red);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-size: 14px;
  border: 1px solid rgba(185, 28, 28, 0.2);
}

.page-footer {
  text-align: center;
  padding: 20px;
  font-size: 12px;
  color: var(--text-muted);
}

@media (max-width: 720px) {
  .page-header {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 16px 20px;
  }
  .refresh-note { justify-self: start; }
  main { padding: 16px; }
  .data-section { padding: 16px; }
}