@media (max-width: 1180px) {
  .brand { min-width: 220px; }
  .primary-links { gap: 18px; }
  .app-content { padding-inline: 28px; }
  .protocol-library-grid { grid-template-columns: 1fr; }
  .protocol-card-list,
  .protocol-reference-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 980px) {
  .brand { min-width: 205px; }
  .primary-links { gap: 14px; }
  .account-name { display: none; }
  .experiment-rail { display: none; }
  .app-content { margin-left: 0; }
  .settings-layout { grid-template-columns: 1fr; }
  .settings-nav {
    position: static;
    display: flex;
    overflow-x: auto;
  }
  .settings-nav a { min-width: max-content; }
  .team-member-header { grid-template-columns: 48px minmax(180px, 1fr) auto; }
  .team-audit-link { grid-column: 2; justify-self: start; }
  .team-directory-grid { grid-template-columns: 1fr; }
  .protocol-form-grid,
  .protocol-reference-layout { grid-template-columns: 1fr; }
  .media-recipe-grid,
  .media-reference-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .protocol-wide-field { grid-column: auto; }
  .protocol-document-import-controls { align-items: stretch; flex-direction: column; }
  .protocol-import-review .protocol-import-media-tools { grid-template-columns: 1fr; }
  .protocol-import-media-tools .settings-secondary-button { width: 100%; }
  .protocol-import-media-progress { align-items: flex-start; flex-direction: column; }
  .protocol-document-file-button { width: 100%; }
  .protocol-document-extract { width: 100%; justify-content: center; }
  .protocol-step-row { grid-template-columns: 60px 1fr 30px; }
  .protocol-step-recurrence,
  .protocol-step-row > label:nth-of-type(3) { grid-column: 1 / -2; }
  .protocol-step-row > button { grid-column: 3; grid-row: 1; }
  .protocol-assay-row { grid-template-columns: 1fr 120px 30px; }
  .protocol-assay-row label:nth-of-type(3) { grid-column: 1 / -2; }
  .team-protocol-grid { grid-template-columns: repeat(2, minmax(210px, 1fr)); }
  .culture-filters { grid-template-columns: 1fr 1fr; }
  .culture-search { grid-column: 1 / -1; min-height: 40px; }
}

@media (max-width: 860px) {
  .mobile-nav-toggle { display: block; }
  .topbar-collapse {
    position: absolute;
    z-index: 60;
    top: 64px;
    left: 0;
    right: 0;
    height: auto;
    padding: 16px 22px;
    border-top: 1px solid var(--ch-line);
    background: #fff;
    box-shadow: 0 14px 30px rgba(11, 28, 48, .09);
  }
  .topbar-collapse.show { display: block; }
  .primary-links { align-items: stretch; flex-direction: column; gap: 2px; }
  .primary-links a { height: auto; padding: 9px; border-radius: 4px; }
  .primary-links a.active::after { display: none; }
  .primary-links a.active { background: var(--ch-tint); }
  .account-actions { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--ch-line); }
}

@media (max-width: 760px) {
  .topbar { padding: 0 16px; }
  .brand { min-width: auto; }
  .app-content { padding: 92px 16px 40px; }
  .dashboard-hero { align-items: flex-start; flex-direction: column; }
  .dashboard-hero h1 { font-size: 2.15rem; }
  .hero-actions { width: 100%; }
  .hero-actions .btn { flex: 1; justify-content: center; padding-inline: 14px; }
  .kpi-grid { grid-template-columns: 1fr; }
  .feed-strip,
  .protocol-strip { grid-template-columns: 1fr; padding-inline: 18px; }
  .data-panel-header { min-height: 66px; padding: 16px 18px; }
  .today-panel-actions { gap: 10px; }
  .media-prep-button span { display: none; }
  .media-prep-button { min-width: 32px; justify-content: center; padding-inline: 7px; }
  .dashboard-lower { grid-template-columns: 1fr; }
  .activity-list { grid-template-columns: 1fr; padding-inline: 18px; }
  .team-list { padding-inline: 18px; }
  .settings-hero { align-items: flex-start; flex-direction: column; }
  .settings-panel-header { grid-template-columns: 38px minmax(0, 1fr); padding-inline: 18px; }
  .settings-panel-header > :last-child:not(div) { grid-column: 2; justify-self: start; }
  .settings-audit-actions { grid-column: 2; align-items: flex-start; flex-direction: column; }
  .settings-form { padding-inline: 18px; }
  .settings-form-grid,
  .workspace-settings-grid { grid-template-columns: 1fr; }
  .settings-profile-photo { grid-template-columns: 58px minmax(0, 1fr); }
  .settings-profile-avatar { width: 58px; height: 58px; }
  .settings-field-wide { grid-column: auto; }
  .workspace-member-card {
    grid-template-columns: 34px minmax(0, 1fr) auto;
  }
  .workspace-member-role { grid-column: 2; width: fit-content; }
  .workspace-member-status { grid-column: 3; grid-row: 1; }
  .workspace-member-edit { grid-column: 3; grid-row: 2; }
  .settings-member-permissions { grid-template-columns: 1fr; }
  .audit-filters { grid-template-columns: 1fr 1fr; padding-inline: 18px; }
  .workspace-settings-grid { padding-inline: 18px; }
  .settings-data-actions { margin-inline: 18px; align-items: flex-start; flex-direction: column; }
  .settings-future-note { margin-inline: 18px; }
  .team-page-hero { align-items: flex-start; flex-direction: column; }
  .team-week-control { width: 100%; justify-content: space-between; }
  .team-summary-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .team-member-header { grid-template-columns: 48px 1fr; padding-inline: 18px; }
  .team-member-metrics { grid-column: 1 / -1; }
  .team-audit-link { grid-column: 1 / -1; }
  .team-directory-card { grid-template-columns: 44px minmax(0, 1fr); }
  .team-directory-card .team-audit-link { grid-column: 1 / -1; }
  .team-directory-stats { grid-column: 1 / -1; }
  .team-protocol-grid { grid-template-columns: 1fr; padding-inline: 18px; }
  .team-section-heading { padding-inline: 18px; }
  .team-calendar-heading { align-items: flex-start; flex-direction: column; }
  .team-calendar-heading .team-week-control { align-self: stretch; }
  .team-calendar-wrap { margin-inline: 18px; }
  .schedule-hero,
  .cultures-hero { align-items: flex-start; flex-direction: column; }
  .media-prep-hero { align-items: flex-start; flex-direction: column; }
  .media-prep-summary { width: 100%; flex-wrap: wrap; }
  .media-panel-action-header > div:first-child { flex: 1 1 100%; }
  .media-panel-action-header > .protocol-panel-action { margin-left: auto; }
  .media-recipe-grid,
  .media-reference-grid { grid-template-columns: 1fr; }
  .protocol-card-list,
  .protocol-reference-list { grid-template-columns: 1fr; }
  .protocol-step-recurrence { grid-template-columns: 1fr 88px 94px; }
  .batch-camera-layout { grid-template-columns: 1fr; }
  .batch-camera-stage,
  .batch-camera-stage video,
  .batch-camera-stage > img { min-height: 280px; }
  .culture-type-grid { grid-template-columns: 1fr; }
  .culture-filters { grid-template-columns: 1fr; }
  .culture-search { grid-column: auto; min-height: 40px; }
  .schedule-month-day { min-height: 82px; padding: 5px; }
  .month-entry { font-size: .7rem; }
  .gantt-row { grid-template-columns: 110px 1fr; }
  .legal-summary { grid-template-columns: 1fr; }
  .contact-acquisition-layout { grid-template-columns: 1fr; }
  .contact-intro-panel,
  .contact-form-panel { padding: 30px; }
  .contact-support-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .activity-page-hero { align-items: flex-start; }
  .activity-history-header { align-items: flex-start; flex-direction: column; }
  .activity-filter { width: 100%; flex-wrap: wrap; }
  .activity-filter select { flex: 1; }
  .activity-history-item { grid-template-columns: 42px minmax(0, 1fr); }
  .activity-history-item > code { grid-column: 2; }
  .activity-audit-note { grid-template-columns: 34px minmax(0, 1fr); }
  .activity-audit-note > a { grid-column: 2; justify-self: start; }
  .legal-panel { padding: 20px; }
  .app-footer { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 480px) {
  .brand { font-size: 1.25rem; }
  .brand-logo { width: 32px; height: 32px; }
  .account-name { display: none; }
  .hero-actions { flex-direction: column; }
  .batch-icon-options { grid-template-columns: 1fr; }
  .protocol-step-recurrence { grid-template-columns: 1fr; }
  .custom-feed-plan-grid { grid-template-columns: 1fr; }
  .custom-feed-plan-grid label.is-wide { grid-column: auto; }
  .contact-hero h1 { font-size: 2.2rem; }
  .contact-intro-panel,
  .contact-form-panel { padding: 24px 20px; }
  .contact-form-grid,
  .contact-support-grid { grid-template-columns: 1fr; }
  .contact-field.is-wide,
  .contact-consent.is-wide { grid-column: auto; }
  .contact-form-actions { align-items: stretch; flex-direction: column; }
  .contact-submit { width: 100%; }
  .activity-total { justify-items: start; border-left: 0; padding-left: 0; }
  .activity-filter label { width: 100%; }
  .activity-filter select { min-width: 100%; }
  .activity-history-list { padding-inline: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}