/* ─── Design Tokens ─────────────────────────────────────────── */
:root {
  --primary: #4F46E5;
  --primary-hover: #4338CA;
  --primary-light: #EEF2FF;
  --bg: #F8FAFC;
  --card: #FFFFFF;
  --text: #0F172A;
  --muted: #64748B;
  --border: #E2E8F0;
  --border-hover: #CBD5E1;
  --success: #059669;
  --success-bg: #ECFDF5;
  --warning: #D97706;
  --warning-bg: #FFFBEB;
  --danger: #DC2626;
  --danger-bg: #FEF2F2;
  --nav-h: 60px;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --transition: 150ms ease;
}

/* ─── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14px; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ─── Navbar ─────────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: #fff;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  z-index: 100;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-logo {
  width: 32px;
  height: 32px;
  background: var(--primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.5px;
  flex-shrink: 0;
}

.nav-title {
  font-weight: 700;
  font-size: 15px;
  color: var(--text);
  letter-spacing: -0.2px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.gsc-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  background: var(--success-bg);
  border: 1px solid #A7F3D0;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  color: var(--success);
}

.gsc-badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  transition: var(--transition);
}

.nav-btn:hover { background: var(--border); }

/* ─── App Shell ──────────────────────────────────────────────── */
.app-shell {
  margin-top: var(--nav-h);
  min-height: calc(100vh - var(--nav-h));
}

.app-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px 28px;
}

/* ─── Auth Gate ──────────────────────────────────────────────── */
.auth-gate {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--nav-h));
}

.auth-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 48px 40px;
  text-align: center;
  max-width: 480px;
  width: 100%;
  box-shadow: var(--shadow-md);
}

.auth-icon {
  width: 64px;
  height: 64px;
  background: var(--primary-light);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 28px;
}

.auth-card h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

.auth-card p {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 28px;
  line-height: 1.6;
}

.auth-hint {
  margin-top: 16px;
  font-size: 12px;
  color: var(--muted);
}

/* ─── Controls Row ───────────────────────────────────────────── */
.controls-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 16px;
}

.controls-row {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
  flex: 1;
  min-width: 160px;
}

.control-group.btn-group {
  flex: 0 0 auto;
  min-width: auto;
}

.control-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
}

/* ─── Tabs ───────────────────────────────────────────────────── */
.tabs-nav {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.tab-btn {
  padding: 10px 18px;
  border: none;
  background: none;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: var(--transition);
}

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

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* ─── Section Header ─────────────────────────────────────────── */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.section-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.section-desc {
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
}

/* ─── Filter Bar ─────────────────────────────────────────────── */
.filter-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.search-box {
  position: relative;
  flex: 1;
  min-width: 200px;
  max-width: 300px;
}

.search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
  width: 14px;
  height: 14px;
}

.search-input {
  width: 100%;
  padding: 7px 10px 7px 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  background: var(--card);
  color: var(--text);
  transition: var(--transition);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.filter-select {
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  background: var(--card);
  color: var(--text);
  cursor: pointer;
  transition: var(--transition);
}

.filter-select:focus {
  outline: none;
  border-color: var(--primary);
}

.filter-count {
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}

/* ─── Table ──────────────────────────────────────────────────── */
.table-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.table-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

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

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.data-table thead th {
  padding: 10px 14px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  background: #F8FAFC;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  user-select: none;
}

.data-table thead th.th-num { text-align: right; }

.th-sort { cursor: pointer; }
.th-sort:hover { color: var(--text); background: #F1F5F9; }
.th-sort.sort-active { color: var(--primary); }

.sort-icon {
  display: inline-block;
  opacity: 0.4;
  font-size: 11px;
  margin-left: 4px;
  transition: var(--transition);
}
.th-sort.sort-active .sort-icon { opacity: 1; }

.data-table tbody td {
  padding: 11px 14px;
  border-bottom: 1px solid #F1F5F9;
  vertical-align: middle;
}
.data-table tbody tr:last-child td { border-bottom: none; }

.data-table tbody tr:hover td { background: #FAFBFF; }

.td-num { text-align: right; font-variant-numeric: tabular-nums; }
.td-muted { color: var(--muted); font-size: 12px; }

.url-cell {
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text);
  font-weight: 500;
}

/* ─── Opportunity Badges ─────────────────────────────────────── */
.opp-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.opp-high   { background: #FEF2F2; color: #DC2626; }
.opp-medium { background: #FFFBEB; color: #D97706; }
.opp-low    { background: #ECFDF5; color: #059669; }

/* ─── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); }

.btn-secondary {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover:not(:disabled) { background: var(--border); }

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid #FECACA;
}
.btn-danger:hover:not(:disabled) { background: #FEE2E2; }

.btn-ghost {
  background: none;
  color: var(--primary);
  border: none;
  padding: 6px 8px;
  font-size: 13px;
}
.btn-ghost:hover { text-decoration: underline; }

.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-lg { padding: 12px 24px; font-size: 14px; }
.btn-icon { padding: 8px; border-radius: var(--radius-sm); }

.btn-success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid #A7F3D0;
}

/* ─── Form Elements ──────────────────────────────────────────── */
select, input[type="text"], input[type="password"], input[type="url"], input[type="email"], textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: inherit;
  color: var(--text);
  background: var(--card);
  transition: var(--transition);
}

select:focus, input:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

/* ─── Utilities ──────────────────────────────────────────────── */
.hidden { display: none !important; }

.loading-state {
  padding: 48px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

.empty-state {
  padding: 48px;
  text-align: center;
  color: var(--muted);
}

.empty-state p { font-size: 13px; }

.info-text {
  font-size: 12px;
  color: var(--muted);
}

/* ─── Modal ──────────────────────────────────────────────────── */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(2px);
}

.modal-dialog {
  position: relative;
  background: var(--card);
  border-radius: 14px;
  width: 100%;
  max-width: 820px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-md);
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 22px 24px 16px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--card);
  z-index: 1;
}

.modal-title {
  font-size: 18px;
  font-weight: 700;
}

.page-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
}

.meta-url {
  color: var(--primary);
  word-break: break-all;
  font-weight: 500;
}

.meta-sep { opacity: 0.4; }

.modal-close {
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--muted);
  line-height: 1;
  padding: 2px 6px;
  border-radius: 4px;
}
.modal-close:hover { color: var(--text); background: var(--bg); }

.modal-body { padding: 20px 24px; }

/* ─── Scores ─────────────────────────────────────────────────── */
.scores {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.score-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
}

.score-card.overall { border-color: #C7D2FE; background: var(--primary-light); }

.score-value {
  display: block;
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}

.score-label {
  font-size: 11px;
  color: var(--muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

/* ─── Issues ─────────────────────────────────────────────────── */
.issue {
  padding: 10px 12px;
  margin-bottom: 8px;
  border-radius: var(--radius-sm);
  border-left: 3px solid;
  font-size: 13px;
}

.issue.high   { background: var(--danger-bg);  border-color: var(--danger); }
.issue.medium { background: var(--warning-bg); border-color: var(--warning); }
.issue.low    { background: var(--success-bg); border-color: var(--success); }

.issue-category {
  font-weight: 700;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  opacity: 0.7;
  margin-bottom: 3px;
}

.issue-message { margin-bottom: 3px; }

.issue-suggestion { font-size: 12px; color: var(--muted); }

/* ─── Alternatives ───────────────────────────────────────────── */
.alternative-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-bottom: 12px;
  background: var(--card);
}

.alternative-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.alt-label { font-size: 13px; font-weight: 600; }

.alt-score-badge {
  background: var(--primary-light);
  color: var(--primary);
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.alt-field-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.alt-text {
  background: #F8FAFC;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font-size: 13px;
  margin-bottom: 10px;
  line-height: 1.5;
}

.alt-reasoning {
  font-size: 12px;
  color: var(--muted);
  border-top: 1px solid var(--border);
  padding-top: 10px;
  margin-top: 4px;
}

.alt-actions { margin-top: 12px; display: flex; gap: 8px; }

.copy-btn {
  padding: 3px 8px;
  font-size: 11px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  color: var(--muted);
}
.copy-btn:hover { color: var(--text); border-color: var(--border-hover); }

/* ─── Meta Section ───────────────────────────────────────────── */
.meta-section { margin: 16px 0; }

.field { margin-bottom: 14px; }

.field > label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  margin-bottom: 5px;
}

.field-hint {
  font-size: 11px;
  color: var(--muted);
  margin-top: 4px;
}

/* ─── Modal Actions Bar ──────────────────────────────────────── */
.modal-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 16px 24px;
  background: var(--bg);
  border-top: 1px solid var(--border);
  border-radius: 0 0 14px 14px;
  flex-wrap: wrap;
}

.modal-actions input[type="text"] {
  flex: 1;
  min-width: 180px;
}

/* ─── Experiments ────────────────────────────────────────────── */
.experiment-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin-bottom: 10px;
  background: var(--card);
  cursor: pointer;
  transition: var(--transition);
}

.experiment-card:hover { border-color: var(--primary); box-shadow: 0 0 0 2px var(--primary-light); }

.experiment-url {
  font-weight: 600;
  font-size: 13px;
  color: var(--text);
  word-break: break-all;
  margin-bottom: 6px;
}

.experiment-stats {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.experiment-stat {
  font-size: 12px;
  color: var(--muted);
}
.experiment-stat.positive { color: var(--success); }
.experiment-stat.negative { color: var(--danger); }

/* ─── Iteration Timeline ─────────────────────────────────────── */
.iteration-card {
  border-left: 2px solid var(--border);
  padding: 12px 16px;
  margin-left: 8px;
  margin-bottom: 12px;
  position: relative;
}

.iteration-card::before {
  content: '';
  position: absolute;
  left: -6px; top: 14px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--border);
}

.iteration-card.proposed   { border-color: var(--warning); }
.iteration-card.proposed::before { background: var(--warning); }
.iteration-card.implemented { border-color: var(--primary); }
.iteration-card.implemented::before { background: var(--primary); }
.iteration-card.measured   { border-color: var(--success); }
.iteration-card.measured::before  { background: var(--success); }

.iteration-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.iteration-number { font-weight: 700; font-size: 13px; }

.iteration-status {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}
.iteration-status.proposed    { background: var(--warning-bg); color: var(--warning); }
.iteration-status.implemented { background: var(--primary-light); color: var(--primary); }
.iteration-status.measured    { background: var(--success-bg); color: var(--success); }

.iteration-meta {
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-bottom: 10px;
  font-size: 12px;
  line-height: 1.6;
}

.iteration-metrics {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.iteration-metric {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
}

.iteration-metric.improvement { background: var(--success-bg); color: var(--success); border-color: #A7F3D0; }
.iteration-metric.decline     { background: var(--danger-bg);  color: var(--danger);  border-color: #FECACA; }

.iteration-actions { display: flex; gap: 8px; }

/* ─── Learnings ──────────────────────────────────────────────── */
.learning-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin-bottom: 10px;
  background: var(--card);
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.learning-impact {
  font-size: 20px;
  font-weight: 700;
  color: var(--success);
  white-space: nowrap;
}

.learning-details { font-size: 12px; color: var(--muted); line-height: 1.7; }

/* ─── Settings Modal ─────────────────────────────────────────── */
.settings-dialog {
  max-width: 560px;
}

.settings-section {
  padding: 18px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
}

.settings-section h3 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

.settings-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  font-size: 12px;
}

.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #CBD5E1;
  flex-shrink: 0;
}
.status-dot.connected { background: var(--success); }

.status-text { color: var(--muted); font-size: 12px; }

.settings-info {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 12px;
  line-height: 1.5;
}

.settings-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 12px 0;
}

.checkbox-field {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

.checkbox-field input[type="checkbox"] {
  width: auto;
  margin: 0;
}

.checkbox-field label { margin: 0; font-weight: 400; font-size: 13px; }

.button-group { display: flex; gap: 8px; }

/* ─── Loading Indicator ──────────────────────────────────────── */
.loading-text {
  text-align: center;
  color: var(--muted);
  padding: 2rem;
  font-size: 13px;
}

/* ─── Responsive ─────────────────────────────────────────────── */
@media (max-width: 768px) {
  .app-inner { padding: 16px; }
  .navbar { padding: 0 16px; }
  .controls-row { flex-direction: column; }
  .control-group { min-width: 100%; }
  .section-header { flex-direction: column; align-items: flex-start; }
  .scores { grid-template-columns: 1fr; }
  .modal-actions { flex-direction: column; }
  .modal-actions input { width: 100%; }
  .filter-row { flex-direction: column; align-items: flex-start; }
  .search-box { max-width: 100%; width: 100%; }
}

/* ─── Tab Panel ──────────────────────────────────────────────── */
.tab-panel { }

/* ─── Experiments Table ──────────────────────────────────────── */
.exp-toggle {
  color: var(--muted);
  font-size: 10px;
  cursor: pointer;
  user-select: none;
  text-align: center;
}

.exp-row { cursor: pointer; }
.exp-row:hover td { background: #F5F7FF; }
.exp-row.expanded td { background: #EEF2FF; border-bottom: none; }

.delta-good { color: var(--success); font-weight: 600; }
.delta-bad  { color: var(--danger);  font-weight: 600; }

.exp-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}
.exp-status-badge.good    { background: var(--success-bg); color: var(--success); }
.exp-status-badge.bad     { background: var(--danger-bg);  color: var(--danger); }
.exp-status-badge.pending { background: var(--warning-bg); color: var(--warning); }
.exp-status-badge.neutral { background: #F1F5F9; color: var(--muted); }

/* ─── Experiment Detail (expanded row) ───────────────────────── */
.exp-detail-row td { padding: 0; border-bottom: 1px solid var(--border); }

.exp-detail {
  padding: 16px 20px 20px;
  background: #F8FAFF;
  border-top: 1px solid #C7D2FE;
}

.iter-comparison-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}
.iter-comparison-card:last-child { margin-bottom: 0; }

.iter-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: #F8FAFC;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.iter-num { font-weight: 700; font-size: 13px; color: var(--text); }

.iter-status-pill {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}
.iter-status-pill.proposed    { background: var(--warning-bg); color: var(--warning); }
.iter-status-pill.implemented { background: var(--primary-light); color: var(--primary); }
.iter-status-pill.measured    { background: var(--success-bg); color: var(--success); }

.iter-header-meta {
  font-size: 12px;
  color: var(--muted);
  margin-left: auto;
  display: flex;
  gap: 12px;
}

/* ─── Before / After Comparison ─────────────────────────────── */
.iter-split {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
}

.iter-side {
  padding: 14px 16px;
}

.iter-side-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.iter-before .iter-side-label { color: var(--muted); }
.iter-after-win .iter-side-label     { color: var(--success); }
.iter-after-loss .iter-side-label    { color: var(--danger); }
.iter-after-neutral .iter-side-label { color: var(--muted); }
.iter-after-pending .iter-side-label { color: var(--muted); }

.iter-before { border-right: 1px solid var(--border); }

.iter-split-arrow {
  display: flex;
  align-items: center;
  padding: 0 10px;
  color: var(--muted);
  font-size: 18px;
}

.iter-content-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
  line-height: 1.4;
}

.iter-content-desc {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 10px;
  line-height: 1.5;
}

.iter-metrics-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.iter-metric-chip {
  padding: 4px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}
.iter-metric-chip.good { background: var(--success-bg); border-color: #A7F3D0; color: var(--success); }
.iter-metric-chip.bad  { background: var(--danger-bg);  border-color: #FECACA; color: var(--danger); }

.iter-verdict {
  margin-top: 10px;
  font-size: 13px;
  font-weight: 700;
}
.iter-verdict.win  { color: var(--success); }
.iter-verdict.loss { color: var(--danger); }

.iter-pending-state {
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: center;
  height: 100%;
  min-height: 80px;
}

.iter-pending-msg {
  font-size: 13px;
  color: var(--muted);
}

/* Alternatives section header */
#alternatives-section h3,
#iteration-history h3 {
  font-size: 15px;
  font-weight: 700;
  margin: 20px 0 12px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* Scrape loading */
#scrape-loading { padding: 20px; text-align: center; color: var(--muted); font-size: 13px; }

/* ─── Pages table: rows under active experiment ──────────────── */
tr.row-in-experiment td { background: #F0FDF4; }
tr.row-in-experiment:hover td { background: #DCFCE7; }
.exp-indicator { color: #16A34A; font-size: 10px; vertical-align: middle; }

/* ─── Experiment status badge variants ───────────────────────── */
.exp-status-badge.status-proposed    { background: var(--warning-bg); color: var(--warning); }
.exp-status-badge.status-implemented { background: var(--primary-light); color: var(--primary); }
.exp-status-badge.status-measuring   { background: var(--warning-bg); color: var(--warning); }
.exp-status-badge.status-measured    { background: var(--success-bg); color: var(--success); }

/* ─── Iteration card actions bar ─────────────────────────────── */
.iter-actions {
  display: flex;
  gap: 8px;
  padding: 10px 16px;
  border-top: 1px solid var(--border);
  background: #FAFBFF;
}

/* ─── Iter verdict/pending layout ────────────────────────────── */
.iter-verdict {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  font-weight: 700;
}
.iter-pending-state {
  padding: 8px 16px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--muted);
  min-height: auto;
}

/* ─── Experiment URL truncation ──────────────────────────────── */
.exp-url-cell { max-width: 340px; }
.exp-url { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 13px; font-weight: 500; color: var(--text); }
.exp-keyword { font-size: 11px; color: var(--muted); margin-top: 2px; }