/* ─── Utiliy AI Lab — professional workspace (Linear / Jasper / Surfer inspired) ─── */

body.optimizer-active,
body.optimizer-results {
  --lab-bg: #f8f7fc;
  --lab-surface: #ffffff;
  --lab-surface-2: #f4f3f8;
  --lab-surface-3: #ebe9f2;
  --lab-border: rgba(24, 24, 27, .08);
  --lab-border-strong: rgba(24, 24, 27, .12);
  --lab-text: #18181b;
  --lab-text-secondary: #3f3f46;
  --lab-text-muted: #71717a;
  --lab-accent: #7c3aed;
  --lab-accent-hover: #8b5cf6;
  --lab-accent-soft: rgba(124, 58, 237, .1);
  --lab-accent-glow: rgba(124, 58, 237, .18);
  --lab-good: #16a34a;
  --lab-warn: #d97706;
  --lab-bad: #dc2626;
  --lab-sidebar-w: 280px;
  --lab-topbar-h: 56px;
  --lab-font: var(--font, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif);
  --lab-mono: ui-monospace, 'SF Mono', Menlo, Monaco, monospace;
}

body.optimizer-active {
  background: var(--lab-bg) !important;
  color: var(--lab-text);
}

body.optimizer-results .saas-header {
  background: rgba(255, 255, 255, .88);
  backdrop-filter: blur(12px);
  border-bottom-color: var(--lab-border);
}
body.optimizer-results .saas-header .nav a { color: var(--lab-text-secondary); }
body.optimizer-results .saas-header .nav a:hover { color: var(--lab-accent); }
body.optimizer-results .saas-header .btn-ghost {
  color: var(--lab-text-secondary);
  border-color: var(--lab-border);
  background: var(--lab-surface);
}
body.optimizer-results .usage-tracker-text { color: var(--lab-text-muted); }

body.optimizer-active #audit-results,
body.optimizer-results #audit-results {
  margin-top: 0;
  width: 100%;
  max-width: 100%;
}

body.optimizer-active .container,
body.optimizer-results .container {
  width: min(calc(100% - 1.5rem), 1440px);
}

/* ─── Shell ─── */
.optimizer-app {
  margin-top: .5rem;
  animation: labShellIn .4s ease;
}
@keyframes labShellIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

.lab-shell {
  display: grid;
  grid-template-columns: var(--lab-sidebar-w) minmax(0, 1fr);
  min-height: calc(100vh - 5rem);
  border: 1px solid var(--lab-border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--lab-surface);
}

/* ─── Sidebar ─── */
.lab-sidebar {
  display: flex;
  flex-direction: column;
  background: var(--lab-bg);
  border-right: 1px solid var(--lab-border);
  min-height: 0;
  overflow: hidden;
}

.lab-sidebar-brand {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: 1rem 1.1rem .75rem;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--lab-text-secondary);
}

.lab-ai-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--lab-accent);
  box-shadow: 0 0 12px var(--lab-accent-glow);
  flex-shrink: 0;
}

.lab-mode-nav {
  display: flex;
  gap: .25rem;
  padding: 0 .75rem .75rem;
  border-bottom: 1px solid var(--lab-border);
}

.lab-mode-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: .5rem .65rem;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--lab-text-muted);
  font-family: var(--lab-font);
  font-size: .78rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}
.lab-mode-btn:hover { color: var(--lab-text-secondary); background: var(--lab-surface-2); }
.lab-mode-btn.is-active {
  color: var(--lab-text);
  background: var(--lab-surface-2);
  border-color: var(--lab-border);
}
.lab-mode-count {
  font-size: .68rem;
  font-weight: 700;
  padding: .1rem .4rem;
  border-radius: 99px;
  background: var(--lab-accent-soft);
  color: var(--lab-accent-hover);
}

.lab-score-card {
  display: flex;
  align-items: center;
  gap: .85rem;
  margin: .85rem .75rem;
  padding: .85rem;
  border-radius: 10px;
  background: var(--lab-surface-2);
  border: 1px solid var(--lab-border);
}
.lab-score-card.good { color: var(--lab-good); }
.lab-score-card.warn { color: var(--lab-warn); }
.lab-score-card.bad { color: var(--lab-bad); }

.lab-score-ring-wrap {
  position: relative;
  width: 56px;
  height: 56px;
  flex-shrink: 0;
}
.lab-score-ring { width: 100%; height: 100%; }
.lab-score-ring-progress { transition: stroke-dashoffset .9s ease; }
.lab-score-val {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--lab-text);
}

.lab-score-meta { min-width: 0; }
.lab-score-label {
  display: block;
  font-size: .72rem;
  font-weight: 600;
  color: var(--lab-text-secondary);
}
.lab-score-sub {
  display: block;
  font-size: .68rem;
  color: var(--lab-text-muted);
  margin-top: .15rem;
}

.lab-progress-block {
  padding: 0 .75rem .75rem;
  border-bottom: 1px solid var(--lab-border);
}
.lab-progress-head {
  font-size: .68rem;
  color: var(--lab-text-muted);
  margin-bottom: .4rem;
}
.lab-progress-head strong { color: var(--lab-text); }
.lab-progress-bar {
  height: 4px;
  background: var(--lab-surface-3);
  border-radius: 99px;
  overflow: hidden;
}
.lab-progress-bar span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--lab-accent), #6366f1);
  border-radius: 99px;
  transition: width .5s ease;
}

.lab-sidebar-section {
  margin: 0;
  padding: .65rem 1rem .35rem;
  font-size: .62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--lab-text-muted);
}

.lab-queue-wrap {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.lab-queue {
  flex: 1;
  overflow-y: auto;
  padding: 0 .5rem .5rem;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.lab-queue-item {
  display: flex;
  align-items: flex-start;
  gap: .55rem;
  width: 100%;
  padding: .55rem .6rem;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--lab-text-secondary);
  font-family: var(--lab-font);
  text-align: left;
  cursor: pointer;
  transition: background .12s, color .12s;
}
.lab-queue-item:hover { background: var(--lab-surface-2); color: var(--lab-text); }
.lab-queue-item.is-active {
  background: var(--lab-accent-soft);
  color: var(--lab-text);
}
.lab-queue-item.is-done { opacity: .45; }
.lab-queue-item.is-done .lab-queue-status { background: var(--lab-good); }

.lab-queue-status {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  margin-top: .45rem;
  flex-shrink: 0;
  background: var(--lab-text-muted);
}
.lab-queue-item.has-ai .lab-queue-status { background: var(--lab-accent); }
.lab-queue-item.is-active .lab-queue-status {
  box-shadow: 0 0 8px var(--lab-accent-glow);
}

.lab-queue-text { flex: 1; min-width: 0; }
.lab-queue-title {
  display: block;
  font-size: .78rem;
  font-weight: 600;
  line-height: 1.35;
  color: inherit;
}
.lab-queue-meta {
  display: block;
  font-size: .66rem;
  color: var(--lab-text-muted);
  margin-top: .15rem;
}
.lab-queue-index {
  font-size: .62rem;
  font-weight: 700;
  color: var(--lab-text-muted);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

.lab-pillars-wrap {
  border-top: 1px solid var(--lab-border);
  padding-bottom: .5rem;
  flex-shrink: 0;
}
.lab-pillars { padding: 0 .75rem; }
.lab-pillar-row {
  display: grid;
  grid-template-columns: 1.1rem 1fr 2.5rem;
  grid-template-rows: auto auto;
  gap: 0 .45rem;
  align-items: center;
  padding: .35rem 0;
  font-size: .68rem;
  color: var(--lab-text-muted);
}
.lab-pillar-icon {
  grid-row: span 2;
  font-size: .72rem;
  opacity: .7;
}
.lab-pillar-name { font-weight: 500; color: var(--lab-text-secondary); }
.lab-pillar-bar {
  grid-column: 2;
  height: 3px;
  background: var(--lab-surface-3);
  border-radius: 99px;
  overflow: hidden;
}
.lab-pillar-bar span {
  display: block;
  height: 100%;
  background: var(--lab-text-muted);
  border-radius: 99px;
}
.lab-pillar-row.good .lab-pillar-bar span { background: var(--lab-good); }
.lab-pillar-row.warn .lab-pillar-bar span { background: var(--lab-warn); }
.lab-pillar-row.bad .lab-pillar-bar span { background: var(--lab-bad); }
.lab-pillar-val {
  grid-row: span 2;
  grid-column: 3;
  text-align: right;
  font-size: .72rem;
  color: var(--lab-text);
  font-variant-numeric: tabular-nums;
}

/* ─── Main area ─── */
.lab-main {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  background: var(--lab-surface);
}

.lab-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--lab-topbar-h);
  padding: 0 1.25rem;
  border-bottom: 1px solid var(--lab-border);
  background: var(--lab-surface);
  flex-shrink: 0;
}

.lab-topbar-context { min-width: 0; }
.lab-topbar-site {
  display: flex;
  align-items: center;
  gap: .75rem;
  min-width: 0;
}
.lab-site-favicon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  flex-shrink: 0;
  object-fit: contain;
  background: var(--lab-surface-2);
  border: 1px solid var(--lab-border);
  box-shadow: 0 1px 2px rgba(24, 24, 27, .06);
}
.lab-site-favicon--fallback {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: .85rem;
  font-weight: 700;
  color: var(--lab-accent);
  background: var(--lab-accent-soft);
}
.lab-product-title {
  margin: 0;
  font-size: .92rem;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--lab-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 42rem;
}
.lab-product-url {
  margin: .15rem 0 0;
  font-size: .68rem;
  font-family: var(--lab-mono);
  color: var(--lab-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 42rem;
}

.lab-topbar-actions {
  display: flex;
  align-items: center;
  gap: .35rem;
  flex-shrink: 0;
}

.lab-canvas {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem;
  min-height: 0;
  background: var(--lab-surface);
}

.optimizer-view-diagnostics {
  max-width: 820px;
  margin: 0 auto;
  width: 100%;
}

.optimizer-view-diagnostics .lab-diagnostics {
  background: var(--lab-bg);
  border: 1px solid var(--lab-border);
  border-radius: 12px;
  padding: 1.15rem 1.25rem 1.5rem;
}

.optimizer-view { animation: labViewIn .3s ease; }
@keyframes labViewIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ─── Buttons ─── */
.lab-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .35rem;
  padding: .5rem .8rem;
  min-height: 38px;
  border-radius: 8px;
  border: 1px solid var(--lab-border);
  background: var(--lab-surface-2);
  color: var(--lab-text-secondary);
  font-family: var(--lab-font);
  font-size: .76rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .12s, color .12s, border-color .12s;
}
.lab-btn:hover:not(:disabled) {
  background: var(--lab-surface-3);
  color: var(--lab-text);
  border-color: var(--lab-border-strong);
}
.lab-btn:disabled { opacity: .4; cursor: not-allowed; }
.lab-btn--primary {
  background: var(--lab-accent);
  border-color: transparent;
  color: #fff;
}
.lab-btn--primary:hover:not(:disabled) {
  background: var(--lab-accent-hover);
  color: #fff;
}
.lab-btn--ghost {
  background: transparent;
  border-color: transparent;
}
.lab-btn--ghost:hover:not(:disabled) {
  background: var(--lab-surface-2);
  border-color: var(--lab-border);
}

/* ─── Editor ─── */
.fix-workspace {
  min-width: 0;
  max-width: 820px;
  margin: 0 auto;
  transition: opacity .2s ease, transform .2s ease;
}
.fix-workspace.is-swapping { opacity: 0; transform: translateY(4px); }
.fix-workspace.is-visible { opacity: 1; transform: none; }

.lab-editor {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.lab-editor--empty {
  padding: 3rem 2rem;
  text-align: center;
  color: var(--lab-text-muted);
  font-size: .9rem;
}

.lab-editor-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}
.lab-editor-heading h2 {
  margin: .35rem 0 0;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.3;
  color: var(--lab-text);
}
.lab-category-pill {
  display: inline-block;
  font-size: .62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  padding: .2rem .5rem;
  border-radius: 6px;
  background: var(--lab-accent-soft);
  color: var(--lab-accent-hover);
}

.lab-impact {
  font-size: .68rem;
  font-weight: 600;
  padding: .25rem .55rem;
  border-radius: 6px;
  white-space: nowrap;
  flex-shrink: 0;
}
.lab-impact--high { background: rgba(239, 68, 68, .1); color: #b91c1c; }
.lab-impact--medium { background: rgba(245, 158, 11, .12); color: #b45309; }
.lab-impact--low { background: rgba(113, 113, 122, .12); color: var(--lab-text-muted); }

.lab-callout {
  padding: .85rem 1rem;
  border-radius: 10px;
  background: var(--lab-surface-2);
  border: 1px solid var(--lab-border);
}
.lab-callout--muted { color: var(--lab-text-muted); font-size: .86rem; }
.lab-callout-label {
  margin: 0 0 .35rem;
  font-size: .62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--lab-text-muted);
}
.lab-callout-text {
  margin: 0;
  font-size: .86rem;
  line-height: 1.55;
  color: var(--lab-text-secondary);
}

.lab-panel-head {
  margin-bottom: .5rem;
  font-size: .62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--lab-text-muted);
}

.lab-diff {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .65rem;
}
.lab-diff-col {
  padding: .85rem;
  border-radius: 10px;
  border: 1px solid var(--lab-border);
  background: var(--lab-surface-2);
}
.lab-diff-col--after {
  border-color: rgba(139, 92, 246, .3);
  background: rgba(139, 92, 246, .06);
}
.lab-diff-label {
  display: block;
  font-size: .62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--lab-text-muted);
  margin-bottom: .35rem;
}
.lab-diff-col p {
  margin: 0;
  font-size: .82rem;
  line-height: 1.5;
  color: var(--lab-text-secondary);
  word-break: break-word;
}

.lab-code-block {
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--lab-border-strong);
  background: #fafafa;
}
.lab-code-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .55rem .85rem;
  background: var(--lab-surface-2);
  border-bottom: 1px solid var(--lab-border);
}
.lab-code-label {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .72rem;
  font-weight: 600;
  color: var(--lab-text-secondary);
}
.lab-code {
  margin: 0;
  padding: 1rem 1.1rem;
  font-family: var(--lab-mono);
  font-size: .74rem;
  line-height: 1.6;
  color: #27272a;
  background: #fff;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 360px;
  overflow-y: auto;
}

.lab-steps ol {
  margin: 0;
  padding-left: 1.15rem;
  font-size: .84rem;
  line-height: 1.6;
  color: var(--lab-text-secondary);
}

.lab-editor-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: .85rem;
  border-top: 1px solid var(--lab-border);
}
.lab-editor-footer .mark-done-btn {
  min-width: 8.5rem;
  font-weight: 600;
}
.lab-effort { font-size: .74rem; color: var(--lab-text-muted); }

/* SERP preview */
.lab-serp-card {
  padding: .85rem 1rem;
  border-radius: 8px;
  background: #fff;
  border: 1px solid #e5e7eb;
}
.lab-serp-url { margin: 0 0 .1rem; font-size: .7rem; color: #4d5156; font-family: Arial, sans-serif; }
.lab-serp-title { margin: 0 0 .15rem; font-size: .92rem; color: #1a0dab; font-family: Arial, sans-serif; line-height: 1.3; }
.lab-serp-desc {
  margin: 0;
  font-size: .76rem;
  color: #4d5156;
  font-family: Arial, sans-serif;
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Diagnostics */
.lab-diagnostics { max-width: 820px; margin: 0 auto; width: 100%; }
.lab-diagnostics-head {
  margin-bottom: 1.25rem;
}
.lab-diagnostics-head h2 {
  margin: 0 0 .35rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--lab-text);
}
.lab-diagnostics-head p {
  margin: 0;
  font-size: .84rem;
  color: var(--lab-text-muted);
}

body.optimizer-active .cockpit-block,
body.optimizer-active .detail-panel,
body.optimizer-results .cockpit-block,
body.optimizer-results .detail-panel {
  background: var(--lab-surface-2);
  border-color: var(--lab-border);
  color: var(--lab-text-secondary);
}
body.optimizer-active .block-head h3,
body.optimizer-active .panel-head h3,
body.optimizer-results .block-head h3,
body.optimizer-results .panel-head h3 { color: var(--lab-text); }
body.optimizer-active .section-lead,
body.optimizer-active .lab-empty,
body.optimizer-results .section-lead,
body.optimizer-results .lab-empty { color: var(--lab-text-muted); }
body.optimizer-active .score-nav-row,
body.optimizer-results .score-nav-row {
  background: var(--lab-surface-3);
  border-color: var(--lab-border);
  color: var(--lab-text-secondary);
}
body.optimizer-active .score-nav-row:hover,
body.optimizer-results .score-nav-row:hover { background: var(--lab-surface-2); }
body.optimizer-active .fact-chip,
body.optimizer-results .fact-chip {
  background: var(--lab-surface-3);
  border-color: var(--lab-border);
}
body.optimizer-active .issue-card,
body.optimizer-results .issue-card {
  background: var(--lab-surface-3);
  border-color: var(--lab-border);
}
body.optimizer-active .impact-tag.high,
body.optimizer-results .impact-tag.high { background: rgba(239,68,68,.1); color: #b91c1c; }
body.optimizer-active .impact-tag.medium,
body.optimizer-results .impact-tag.medium { background: rgba(245,158,11,.12); color: #b45309; }
body.optimizer-active .impact-tag.low,
body.optimizer-results .impact-tag.low { background: rgba(113,113,122,.12); color: var(--lab-text-muted); }
body.optimizer-active .zone-score.good,
body.optimizer-results .zone-score.good { color: var(--lab-good); }
body.optimizer-active .zone-score.warn,
body.optimizer-results .zone-score.warn { color: var(--lab-warn); }
body.optimizer-active .zone-score.bad,
body.optimizer-results .zone-score.bad { color: var(--lab-bad); }
body.optimizer-active .metric-card,
body.optimizer-results .metric-card {
  background: var(--lab-surface-3);
  border-color: var(--lab-border);
}
body.optimizer-active .metric-head label,
body.optimizer-results .metric-head label { color: var(--lab-text-muted); }
body.optimizer-active .metric-value,
body.optimizer-results .metric-value { color: var(--lab-text-secondary); }

/* Entry form on dark workspace */
body.optimizer-active .audit-input-row,
body.optimizer-results .audit-input-row {
  background: var(--lab-surface-2);
  border-color: var(--lab-border);
  box-shadow: none;
}
body.optimizer-active .audit-input-row input,
body.optimizer-results .audit-input-row input {
  color: var(--lab-text);
}
body.optimizer-active .audit-input-row input::placeholder,
body.optimizer-results .audit-input-row input::placeholder {
  color: var(--lab-text-muted);
}
body.optimizer-active .audit-hint,
body.optimizer-results .audit-hint { color: var(--lab-text-muted); }

.lab-warning {
  margin-bottom: .75rem;
  padding: .7rem 1rem;
  border-radius: 8px;
  background: rgba(245, 158, 11, .08);
  border: 1px solid rgba(245, 158, 11, .22);
  color: #b45309;
  font-size: .82rem;
}
.lab-empty { color: var(--lab-text-muted); font-size: .82rem; margin: 0; padding: .5rem; }

/* Scan state */
body.optimizer-active .lab-scan,
body.optimizer-results .lab-scan {
  background: var(--lab-surface-2);
  border-color: var(--lab-border);
  color: var(--lab-text);
  box-shadow: none;
}
body.optimizer-active .scan-step,
body.optimizer-results .scan-step { color: var(--lab-text-muted); }
body.optimizer-active .scan-step.active,
body.optimizer-results .scan-step.active { color: var(--lab-text); }
body.optimizer-active .scan-step.done,
body.optimizer-results .scan-step.done { color: var(--lab-good); }
body.optimizer-active .scan-pulse::before,
body.optimizer-results .scan-pulse::before { border-top-color: var(--lab-accent); }

/* Animations */
.lab-reveal { animation: labReveal .4s ease both; }
@keyframes labReveal {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

/* Mobile */
@media (max-width: 900px) {
  .lab-shell {
    grid-template-columns: 1fr;
    min-height: auto;
    border-radius: 0;
    border-left: none;
    border-right: none;
  }
  .lab-sidebar {
    max-height: none;
    border-right: none;
    border-bottom: 1px solid var(--lab-border);
  }
  .lab-queue-wrap { max-height: min(40vh, 280px); }
  .lab-pillars-wrap { display: none; }
  .lab-topbar {
    flex-direction: column;
    align-items: flex-start;
    padding: .75rem 1rem;
    gap: .65rem;
  }
  .lab-topbar-actions {
    display: flex;
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    flex-wrap: nowrap;
    gap: .5rem;
    padding-bottom: .2rem;
    scrollbar-width: none;
  }
  .lab-topbar-actions::-webkit-scrollbar { display: none; }
  .lab-topbar-actions .lab-btn {
    flex: 0 0 auto;
    min-height: 40px;
    padding: .55rem .8rem;
    font-size: .8rem;
  }
  .lab-product-title,
  .lab-product-url { max-width: 100%; white-space: normal; }
  .lab-diff { grid-template-columns: 1fr; }
  .lab-canvas { padding: .85rem; }
  .lab-site-favicon { width: 28px; height: 28px; }
  .lab-editor-footer {
    flex-direction: column;
    align-items: stretch;
    gap: .65rem;
  }
  .lab-editor-footer .mark-done-btn { width: 100%; min-height: 44px; }
  .optimizer-view-diagnostics .lab-diagnostics {
    padding: 1rem;
    border-radius: 10px;
  }
}

@media (max-width: 600px) {
  body.optimizer-active .container,
  body.optimizer-results .container,
  body.lab-page.optimizer-results .hero-lab .container {
    width: min(calc(100% - 1rem), 1440px);
  }
  .lab-mode-btn { min-height: 40px; }
  .lab-queue-item { min-height: 44px; }
}

@media print {
  .lab-sidebar, .lab-topbar-actions { display: none !important; }
  .lab-shell { border: none; }
  body.optimizer-active, body.optimizer-results { background: #fff !important; color: #000; }
}