/* Mobile layout overrides. Print and the desktop canvas keep their own layout. */
.mobile-header, .mobile-menu-close, .mobile-nav-backdrop, .mobile-table-hint { display: none; }
.nav-item { background: transparent; font-family: inherit; text-align: start; }
.video-status { padding: 12px 20px; color: var(--text-secondary); line-height: 1.7; }
.page-section h2[tabindex="-1"]:focus { outline: none; }
@media screen and (min-width: 1024px), print {
    .mobile-table-scroll { display: contents; }
}
:where(button, a, input, select, textarea, [tabindex]):focus-visible:not([tabindex="-1"]) {
    outline: 3px solid #0284c7;
    outline-offset: 3px;
}

@media screen and (max-width: 1023px) {
    html { scroll-padding-top: 90px; }
    body { background-attachment: scroll; }
    .mobile-header {
        display: flex;
        align-items: center;
        gap: 12px;
        position: sticky;
        top: 0;
        z-index: 110;
        padding: calc(10px + env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) 10px max(16px, env(safe-area-inset-left));
        background: var(--bg-dark);
        border-bottom: 1px solid var(--border-color);
    }
    .mobile-header-copy { flex: 1; min-width: 0; }
    .mobile-header-copy strong { display: block; font-size: 1rem; }
    .mobile-header-copy span { display: block; font-size: .8125rem; line-height: 1.6; color: var(--text-secondary); }
    .mobile-header > i { font-size: 1.5rem; color: #0284c7; }
    .mobile-icon-button {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 44px;
        height: 44px;
        flex-shrink: 0;
        border: 1px solid var(--border-color);
        border-radius: 12px;
        background: var(--bg-card);
        color: var(--text-primary);
        font-size: 1.25rem;
        cursor: pointer;
    }
    .mobile-menu-close { align-self: flex-end; margin-bottom: 12px; }
    .sidebar {
        width: min(88vw, 320px);
        height: 100vh;
        height: 100dvh;
        padding: max(12px, env(safe-area-inset-top)) 16px max(16px, env(safe-area-inset-bottom));
        z-index: 130;
        background: var(--bg-dark);
        transform: translateX(100%);
        visibility: hidden;
        transition: transform .22s ease;
        overscroll-behavior: contain;
    }
    .mobile-nav-open { overflow: hidden; }
    .mobile-nav-open .sidebar { transform: translateX(0); visibility: visible; }
    .mobile-nav-backdrop:not([hidden]) {
        display: block;
        position: fixed;
        inset: 0;
        z-index: 120;
        border: 0;
        background: rgb(0 0 0 / 65%);
    }
    .sidebar .logo-container { margin-bottom: 20px; }
    .sidebar .logo-text { font-size: 1.125rem; }
    .sidebar .logo-icon { font-size: 1.75rem; }
    .sidebar .logo-text span { font-size: .75rem; }
    .nav-item { min-height: 48px; font-size: .9375rem; padding: 12px; }
    .nav-item span { white-space: normal; line-height: 1.6; }
    .daylight-toggle-btn { width: 44px; min-width: 44px; height: 44px; }
    .app-container { display: block; min-height: calc(100svh - 72px); }
    .main-content {
        margin-right: 0;
        width: 100%;
        max-width: 100%;
        min-height: auto;
        padding: 24px max(16px, env(safe-area-inset-right)) max(32px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
    }
    .page-section, .prep-main, .forms-panes-container, .form-pane,
    .prep-layout > *, .ghs-layout > *, .pdf-interface-grid > *, .form-grid > * { min-width: 0; max-width: 100%; }
    .section-header { gap: 16px; flex-wrap: wrap; }
    .section-title { font-size: 1.5rem; line-height: 1.6; }
    .section-subtitle { font-size: .9375rem; line-height: 1.8; }
    .panel-title { font-size: 1.125rem; line-height: 1.6; align-items: flex-start; flex-wrap: wrap; overflow-wrap: anywhere; }
    .dashboard-panel, .calculator-panel, .ghs-form-panel { padding: 20px; }
    .table-container { width: 100%; max-width: 100%; min-width: 0; overscroll-behavior-x: contain; -webkit-overflow-scrolling: touch; }
    .table-container table { min-width: 600px; }
    .table-container .tech-hazard-table { min-width: 560px; }
    .subtabs-container, .safety-tabs-nav, .tech-tabs-nav { max-width: 100%; gap: 8px; scrollbar-width: thin; overscroll-behavior-x: contain; }
    .subtab-btn, .safety-tab-btn, .tech-tab-btn { flex-shrink: 0; min-height: 44px; padding: 10px 16px; font-size: .875rem; }
    .search-input-wrapper, .filter-select-wrapper { min-width: 0; }
    .search-filter-bar > * { flex-basis: 100%; }
    input:not([type="checkbox"]):not([type="radio"]), select, textarea, .form-control {
        max-width: 100%; min-height: 44px; font-size: 16px;
    }
    :where(button, .calc-btn, .admin-btn, .table-action-btn, .pdf-download-btn, .pdf-open-new-btn) { min-height: 44px; }
    .calc-btn { white-space: normal; line-height: 1.6; }
    .mobile-flexible { min-width: 0 !important; flex-basis: 100% !important; }
    .mobile-table-hint { display: block; font-size: .8125rem; line-height: 1.6; margin: 8px 0; color: var(--text-secondary); }
    .form-pane .dashboard-panel { padding: 20px !important; }
    .form-pane .mobile-stack-grid { grid-template-columns: minmax(0, 1fr) !important; }
    .mobile-stack-grid > * { min-width: 0; }
    .form-pane .dashboard-panel > .no-print { display: flex; flex-wrap: wrap; gap: 12px; }
    .form-pane .dashboard-panel > .no-print > .panel-title { flex-basis: 100%; }
    .form-pane .dashboard-panel > .no-print > div { display: flex; flex-wrap: wrap; gap: 8px; width: 100%; }
    .form-pane .dashboard-panel > .no-print .calc-btn { flex: 1 1 200px; margin: 0; }
    .form-pane .dashboard-panel input, .form-pane .dashboard-panel select { font-size: 16px !important; }
    .form-pane .table-container td:not(:first-child) { min-width: 130px; }
    .printable-form-header > div > div { flex-direction: column; gap: 12px; }
    .printable-form-header > div > div > div { text-align: center !important; min-width: 0 !important; }
    .printable-form-header > div > div > div:empty { display: none; }
    .pdf-iframe-wrapper { height: 65svh !important; min-height: 300px; max-height: 600px; }
    .pdf-embed-header { flex-wrap: wrap; gap: 10px; }
    .modal-overlay { width: 100%; height: 100dvh; padding: max(12px, env(safe-area-inset-top)) 12px max(12px, env(safe-area-inset-bottom)); }
    .modal-content { max-height: calc(100dvh - 32px); overflow-y: auto; overscroll-behavior: contain; border-radius: 16px; }
    .modal-content[style] { padding: 64px 20px 24px !important; }
    .modal-close { width: 44px; height: 44px; }
    .video-card-download-btn { width: 44px; height: 44px; min-width: 44px; }
    .modal-title-wrapper { padding: 20px; }
    #shareModal .modal-content > h3 { font-size: 1.125rem; }
    #shareLinkInput { min-width: 0; }
    #shareModal .modal-content div[style*="display: flex"] { flex-wrap: wrap; }
    #shareModal .modal-content button { flex-wrap: wrap; }
    body.daylight-theme .logo-text, body.daylight-theme .card-stat { -webkit-text-fill-color: var(--text-primary); }
}

@media screen and (max-width: 600px) {
    .dashboard-grid, .videos-grid, .items-grid, .hazard-grid, .spill-workflow,
    .pledge-grid, .tech-guide-grid, .mobile-stack-grid { grid-template-columns: minmax(0, 1fr) !important; gap: 16px; }
    .dashboard-grid { margin-bottom: 24px; }
    .dashboard-card { display: grid; grid-template-columns: 48px minmax(0, 1fr); gap: 8px 14px; padding: 18px; border-radius: 16px; }
    .dashboard-card .card-icon-wrapper { grid-row: span 2; width: 48px; height: 48px; font-size: 1.4rem; margin: 0; }
    .card-info h3 { font-size: 1.0625rem; line-height: 1.6; }
    .card-info p { font-size: .9375rem; line-height: 1.7; }
    .card-stat { font-size: .875rem; grid-column: 2; }
    .dashboard-panel, .calculator-panel, .ghs-form-panel, .hazard-card,
    .pledge-card, .tech-guide-card, .pdf-info-card { padding: 16px; }
    .form-pane .dashboard-panel { padding: 16px !important; }
    .mobile-stack-grid > * { min-width: 0; }
    .certificate-input-group { flex-direction: column; align-items: stretch; }
    .bunsen-simulator { grid-template-columns: minmax(0, 1fr); padding: 16px; }
    .bunsen-simulator > * { min-width: 0; }
    .burner-gas-knob, .burner-vent-control > div { flex-wrap: wrap; }
    .burner-gas-knob > button, .burner-vent-control button { flex: 1 1 100% !important; }
    .burner-vent-control button { flex-direction: column; gap: 4px; }
    .burner-vent-control button br { display: none; }
    #btnSignCertificate { width: 100% !important; }
    .live-label-container { padding: 14px; border-width: 3px; aspect-ratio: auto; }
    .label-header { flex-wrap: wrap; gap: 8px; }
    .label-header .chem-title { font-size: 1.25rem; overflow-wrap: anywhere; }
    .label-body { grid-template-columns: minmax(0, 1fr); }
    .label-pictograms { flex-direction: row; flex-wrap: wrap; }
    .label-footer, .detail-row { flex-wrap: wrap; gap: 8px; }
    .label-footer { margin-top: 12px; }
    .pictograms-selection { gap: 8px; }
    .picto-checkbox { min-width: 0; padding: 10px 4px; }
    .picto-label { font-size: .75rem; }
    .tech-card-header { gap: 12px; }
    .tech-card-title { font-size: 1.125rem; min-width: 0; overflow-wrap: anywhere; }
    .form-pane .dashboard-panel > .no-print .calc-btn { flex-basis: 100%; }
}

@media (prefers-reduced-motion: reduce) {
    .sidebar, .page-section, .form-pane, .modal-content { animation: none; transition: none; }
}