@media (max-width: 760px) {
  html, body { width: 100%; }
  .app-shell { display: block; min-width: 0; width: 100%; }
  .sidebar { position: static; width: 100%; min-width: 0; height: auto; overflow: hidden; padding: 15px 16px 17px; }
  .brand { width: 126px; min-height: 72px; justify-content: center; padding: 6px; }
  .brand-logo { width: 94px; height: 64px; object-fit: contain; object-position: left center; }
  .side-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 7px; width: 100%; min-width: 0; margin-top: 12px; overflow: visible; }
  .nav-link { min-width: 0; min-height: 45px; padding: 8px 10px; gap: 8px; border-radius: 9px; font-size: 11px; line-height: 1.2; white-space: normal; text-align: left; }
  .nav-icon { flex: none; width: 18px; font-size: 15px; }
  .nav-sub-link { grid-column: 1 / -1; margin: 0; padding-left: 10px; }
  .main-content, .page-content, .channel-view { width: 100%; min-width: 0; }
  .page-content { padding: 23px 16px max(28px, env(safe-area-inset-bottom)); }
  .page-heading { margin-bottom: 22px; }
  .page-heading h1 { font-size: clamp(29px, 8vw, 36px); overflow-wrap: anywhere; }
  .page-heading p { font-size: 12px; line-height: 1.45; }
  .header-actions { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 8px; width: 100%; margin-top: 20px; }
  .period-control { min-width: 0; }
  .period-control select { width: 100%; min-width: 0; }
  .export-button { min-width: 0; padding: 0 10px; font-size: 11px; white-space: nowrap; }
  .preview-notice { margin-bottom: 25px; padding: 11px 12px; font-size: 11px; }
  .section-intro { display: block; }
  .section-intro .period-caption, .section-intro .table-hint { display: block; margin-top: 6px; }
  .metric-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
  .metric-card { min-width: 0; min-height: 126px; padding: 13px; }
  .metric-head { font-size: 10px; gap: 5px; }
  .metric-value { font-size: clamp(18px, 4.8vw, 24px); margin-top: 15px; white-space: normal; overflow-wrap: anywhere; }
  .metric-card small { line-height: 1.3; }
  .secondary-metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; overflow: visible; padding: 12px 5px; }
  .secondary-metrics > div { display: block; min-width: 0; padding: 0 8px; }
  .secondary-metrics > div:first-child { padding-left: 8px; }
  .secondary-metrics span, .secondary-metrics strong, .secondary-metrics small { display: block; }
  .secondary-metrics strong { margin: 4px 0; font-size: 16px; }
  .secondary-metrics small { font-size: 9px; line-height: 1.25; }
  .chart-panel, .allocation-panel, .channel-panel, .site-detail-grid .site-panel, .seo-panel { padding: 17px; }
  .chart-empty { min-height: 170px; }
  .metric-switch { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .metric-switch-button { min-width: 0; padding: 9px 4px; white-space: normal; font-size: 10px; }
  .comparison-row-top span { white-space: normal; line-height: 1.3; }
  .table-scroll { overflow: visible; }
  table, tbody { display: block; width: 100%; min-width: 0; }
  thead { display: none; }
  tbody tr { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 6px; border-bottom: 1px solid #edf1f4; padding: 10px 0; }
  tbody tr:last-child { border-bottom: 0; }
  tbody td { display: block; min-width: 0; border: 0; padding: 7px 13px; text-align: left; font-size: 12px; }
  tbody td:first-child { grid-column: 1 / -1; font-size: 13px; }
  tbody td:not(:first-child)::before { display: block; margin-bottom: 3px; color: #8998a7; font-size: 9px; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; }
  tbody td:nth-child(2)::before { content: 'Investimento'; }
  tbody td:nth-child(3)::before { content: 'Cliques'; }
  tbody td:nth-child(4)::before { content: 'Conversões'; }
  tbody td:nth-child(5)::before { content: 'CPC médio'; }
  .site-property-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 7px; margin-bottom: 20px; }
  .site-property-button { min-height: 54px; }
  .site-kpi-grid, .seo-metric-grid, .seo-traffic-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .site-kpi { min-height: 135px; padding: 13px; }
  .site-kpi strong { font-size: 23px; }
  .site-kpi-comparison { flex-wrap: wrap; }
  .site-detail-grid { grid-template-columns: 1fr; }
  .site-detail-grid .site-panel { min-height: 0; }
  .site-detail-grid .site-panel:last-child { grid-column: auto; }
  .seo-status { align-items: flex-start; }
  .seo-traffic-card { min-height: 110px; padding: 14px; }
  .seo-traffic-card strong { font-size: 24px; }
  .future-metrics, .organic-stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .source-note { margin-top: 24px; }
  footer { line-height: 1.6; }
}

@media (max-width: 380px) {
  .page-content { padding-left: 13px; padding-right: 13px; }
  .nav-link { font-size: 10px; }
  .metric-card { padding: 11px; }
  .metric-value { font-size: 18px; }
  .site-kpi, .seo-metric, .seo-traffic-card { padding: 12px; }
}