/* Responsive layer, desktop-first: one block per breakpoint from widest to narrowest, then motion.
   Inside each block rules keep their original relative order. */

/* Wide desktop */
@media (min-width: 1500px) {
  .layout {
    grid-template-columns: minmax(0px, 1fr) 290px;
  }
  #decision {
    padding: 32px;
  }
  .impact-pair {
    grid-template-columns: minmax(0px, 1fr) 132px minmax(0px, 1fr);
  }
  .impact-link {
    text-wrap-mode: wrap;
    text-align: center;
  }
}

/* Desktop ≤1500 */
@media (max-width: 1500px) {
  .impact-pair {
    grid-template-columns: minmax(0px, 1fr) 118px minmax(0px, 1fr);
  }
  .impact-link {
    text-wrap-mode: wrap;
    text-align: center;
  }
  .home-heading {
    display: block;
  }
  .home-heading > button {
    margin-top: 8px;
  }
  #decision .home-heading h2 {
    max-width: none;
  }
}

/* Compact desktop ≤1400 */
@media (max-width: 1400px) {
  #context > p {
    grid-column: 1 / -1;
  }
  .layout {
    grid-template-columns: minmax(0px, 1fr) 248px;
    gap: 18px;
  }
  #context {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .workspace-head h1 {
    font-size: 13px;
  }
  .workspace-head {
    gap: 12px;
  }
  #decision {
    padding: 24px;
  }
}

/* Tablet and drawer navigation ≤1279 */
@media (max-width: 1279px) {
  #menu, #journey #close-menu {
    display: inline-flex;
  }
  #menu {
    order: -1;
    background: none;
    color: var(--text-primary);
    box-shadow: none;
    min-width: 44px;
    padding: 8px 12px;
  }
  #journey.open {
    transform: translateX(0px);
  }
  .welcome {
    margin: 32px;
    grid-template-columns: minmax(0px, 1fr) minmax(0px, 1fr);
  }
  .access-art {
    display: none;
  }
  .how {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  /* Tablet heroes carry the lead further into the photograph: a slightly longer ivory veil keeps AA. */
  .hero::before {
    background: linear-gradient(90deg,color-mix(in srgb,var(--bp-brand-ivory) 94%,transparent) 0%,color-mix(in srgb,var(--bp-brand-ivory) 86%,transparent) 44%,transparent 72%);
  }
  .hero-copy {
    max-width: 540px;
  }
  .pillars {
    grid-template-columns: repeat(2, 1fr);
  }
  .pillars li:nth-child(3) {
    border-left: 0px;
    padding-left: 0px;
  }
  #workspace {
    padding: 24px;
  }
  .app .brand {
    width: auto;
  }
  .app .product-heading {
    padding-left: 20px;
  }
  .layout {
    grid-template-columns: minmax(0px, 1fr) 260px;
  }
  #journey {
    transform: translateX(-100%);
    top: 0px;
    width: 280px;
    background-image: initial;
    background-color: rgb(248, 245, 238);
  }
  .workspace-head h1 {
    font-size: 15px;
  }
  body.app footer {
    padding-left: 24px;
  }
  #workspace[aria-busy="true"]::before {
    left: 0px;
  }
}

/* Single column ≤1000 */
@media (max-width: 1000px) {
  .layout {
    grid-template-columns: minmax(0px, 1fr);
  }
  #context {
    position: static;
  }
  .context-cover {
    padding-top: 20px;
    padding-right: 24px;
    padding-left: 24px;
  }
  .context-lineage {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px 24px;
  }
  .context-updated, .context-note {
    display: none;
  }
  .context-lineage li {
    padding-bottom: 12px;
  }
  .context-details {
    padding: 10px 24px;
  }
  .context-lineage li::before {
    display: none;
  }
  .brand-control {
    flex: 1 1 0%;
  }
  .app .product-heading > span:first-child {
    display: none;
  }
  .app .product-heading {
    border: 0px;
    padding: 0px;
  }
}

/* Portrait tablet: the photograph's subject sits closer to the copy; keep the copy on the veiled side. */
@media (min-width: 768px) and (max-width: 1023px) {
  .hero-copy {
    max-width: 470px;
  }
  .hero::before {
    background: linear-gradient(90deg,color-mix(in srgb,var(--bp-brand-ivory) 95%,transparent) 0%,color-mix(in srgb,var(--bp-brand-ivory) 90%,transparent) 52%,transparent 80%);
  }
}

/* Mobile ≤767 */
@media (max-width: 767px) {
  .public-nav a:not(.cta) {
    display: none;
  }
  #notice {
    left: 16px;
    right: 16px;
    bottom: 16px;
    max-width: none;
  }
  .hero {
    min-height: auto;
  }
  .hero-art img {
    object-position: 72% 100%;
  }
  .hero-copy {
    padding: 40px 20px 24px;
  }
  .pillars {
    margin: 220px 16px 24px;
    grid-template-columns: 1fr 1fr;
    padding: 16px;
  }
  .how {
    margin-top: 56px;
    margin-bottom: 56px;
    padding-right: 16px;
    padding-left: 16px;
  }
  .welcome {
    display: block;
    margin: 24px 16px;
  }
  .welcome form, #pilot-entry {
    margin: 20px 16px 24px;
    padding: 22px;
  }
  .new-brand {
    display: block;
  }
  .workspace-head label, .new-brand input {
    width: 100%;
    max-width: none;
  }
  .new-brand button {
    margin-top: 12px;
    width: 100%;
  }
  .current {
    font-size: 21px;
    padding: 16px;
  }
  .review-options, .kpis, .blueprint-grid {
    grid-template-columns: 1fr 1fr;
  }
  .review-options {
    grid-template-columns: 1fr;
  }
  .form-footer .actions {
    width: 100%;
  }
  :root {
    --shell-height: 70px;
  }
  header {
    min-height: 64px;
    padding: 10px 16px;
    gap: 12px;
  }
  .brand img {
    width: auto;
    height: 36px;
  }
  .app .product-heading {
    display: none;
  }
  .app .brand {
    margin-right: auto;
    width: auto;
  }
  #logout {
    color: var(--text-primary);
    box-shadow: none;
    min-height: 44px;
  }
  #menu {
    padding: 8px;
    min-height: 44px;
  }
  body.app::after {
    background-image: linear-gradient(180deg,color-mix(in srgb,var(--bp-brand-ivory) 55%,transparent),color-mix(in srgb,var(--bp-brand-ivory) 80%,transparent)),url('/brand/web/workspace-atmosphere-mobile.webp');
  }
  .demo {
    font-size: 9.5px;
    padding: 5px;
    letter-spacing: 0.03em;
  }
  .public-nav {
    gap: 10px;
  }
  .public-nav a.cta {
    padding-right: 14px;
    padding-left: 14px;
    font-size: 11px;
  }
  .public-nav a[href="/login"] {
    display: inline-flex;
    font-size: 12px;
  }
  .app .public-nav {
    display: none;
  }
  #workspace {
    padding: 18px 14px 32px;
  }
  .brand-control label {
    font-size: 9.5px;
  }
  .layout {
    gap: 16px;
  }
  #decision h2 {
    font-size: 29px;
    max-width: 24ch;
  }
  #decision[data-view="home"] > h2 {
    font-size: 34px;
  }
  .decision-meta {
    font-size: 10px;
    column-gap: 8px;
  }
  .human-decision {
    padding: 18px;
  }
  .human-decision .current {
    font-size: 22px;
  }
  .knowledge {
    padding-right: 12px;
    padding-bottom: 12px;
    padding-left: 12px;
  }
  .knowledge > summary {
    font-size: 11px;
  }
  .recommendation {
    padding: 16px;
  }
  .review {
    padding-right: 16px;
    padding-bottom: 16px;
    padding-left: 16px;
  }
  .review > h3 {
    padding: 16px;
    margin-right: -16px;
    margin-bottom: 14px;
    margin-left: -16px;
  }
  .impact-steps {
    font-size: 10px;
  }
  .review-options {
    grid-template-columns: 1fr;
  }
  .review-options .option-card {
    min-height: 80px;
  }
  .decision-form {
    padding: 16px;
  }
  .decision-connections {
    font-size: 11px;
  }
  .decision-connections > .label {
    flex-basis: 100%;
    margin-top: 4px;
  }
  .actions button {
    width: auto;
    flex: 1 1 auto;
  }
  .actions .tertiary {
    flex-basis: 100%;
    justify-content: flex-start;
    padding-left: 0px;
  }
  .form-footer .actions button {
    width: 100%;
  }
  .kpis {
    grid-template-columns: 1fr 1fr;
  }
  .kpis span {
    font-size: 11px;
  }
  .attention-section > h3 {
    font-size: 22px;
  }
  .strategy-cards {
    grid-template-columns: 1fr;
  }
  .section-heading > span {
    max-width: 85px;
    text-align: right;
  }
  .section-heading h3 {
    font-size: 23px;
  }
  .context-lineage {
    display: block;
  }
  .context-details {
    padding-top: 10px;
    padding-bottom: 10px;
  }
  .context-lineage li {
    padding-bottom: 18px;
  }
  .context-lineage li::before {
    display: block;
  }
  .context-cover h3 {
    font-size: 24px;
  }
  .blueprint-grid {
    grid-template-columns: 1fr;
  }
  .learning-steps > details {
    padding: 12px 14px;
  }
  .learning-steps summary {
    font-size: 12px;
  }
  .access-copy {
    padding: 28px 24px 0px;
  }
  .access-logo {
    width: 220px;
    margin-bottom: 28px;
  }
  .access-copy h1 {
    font-size: 32px;
  }
  dialog {
    padding: 24px;
  }
  dialog h2 {
    font-size: 29px;
  }
  body.app footer {
    padding: 20px 16px;
  }
  .workspace-head {
    gap: 10px;
    flex-wrap: nowrap;
    display: flex;
  }
  .brand-control {
    padding: 6px 10px;
    min-width: 0px;
    flex: 1 1 0%;
    max-width: none;
  }
  .brand-control select {
    font-size: 13px;
    min-height: 44px;
  }
  /* Icon-only on phones; the visible label stays as the accessible name. */
  #new-brand {
    padding: 0px;
    min-height: 48px;
    width: 48px;
    flex-shrink: 0;
  }
  #new-brand .button-label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }
  #new-brand span[aria-hidden] {
    font-size: 20px;
  }
  .decision-tabs {
    gap: 18px;
    margin-bottom: 20px;
    -webkit-mask-image: linear-gradient(90deg, #000 86%, transparent);
    mask-image: linear-gradient(90deg, #000 86%, transparent);
    padding-right: 28px;
  }
  .decision-tabs button {
    font-size: 12px;
    padding-inline: 8px;
  }
  #decision .decision-heading h2 {
    font-size: 28px;
  }
  .knowledge-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .knowledge-grid section {
    padding: 18px;
  }
  .recommendation[role="tabpanel"] {
    padding: 18px;
  }
  .impact-pair {
    grid-template-columns: 1fr;
  }
  .impact-link {
    padding-top: 12px;
    padding-bottom: 12px;
  }
  .impact-link::before {
    left: 50%;
    right: auto;
    top: 0px;
    bottom: 6px;
    border-top: 0px;
    border-left: 1px solid rgb(193, 165, 117);
  }
  .impact-link::after {
    right: auto;
    left: calc(50% - 4px);
    top: auto;
    bottom: 0px;
    border-left: 4.5px solid transparent;
    border-right: 4.5px solid transparent;
    border-top: 7px solid rgb(193, 165, 117);
    border-bottom: 0px;
  }
  .history .history-item {
    grid-template-columns: 32px minmax(0px, 1fr);
    gap: 10px;
    padding-bottom: 20px;
  }
  .version-marker {
    width: 32px;
    height: 32px;
    font-size: 10px;
  }
  .history-item::before {
    left: 15px;
    top: 32px;
  }
  .history-item > article {
    padding: 16px;
  }
  .history-item h4 {
    font-size: 20px;
  }
  .history-meta {
    column-gap: 6px;
  }
  .history-intro h3 {
    font-size: 24px;
  }
  #decision .home-heading h2 {
    font-size: 32px;
  }
  .home-heading .view-lead {
    line-height: 1.6;
  }
  .home-heading > button {
    width: 100%;
    margin-top: 16px;
  }
  .attention-section {
    padding: 18px;
  }
  .attention-section .section-heading {
    display: block;
  }
  .attention-section .section-heading > span {
    display: block;
    text-align: left;
    max-width: none;
    margin-top: 8px;
  }
  .attention-row {
    display: block;
  }
  .attention-row button {
    margin-top: 12px;
    min-height: 44px;
  }
  .learning-summary > button, .context-next button {
    min-height: 44px;
  }
  .strategy-card {
    display: grid;
    grid-template-columns: 26px minmax(0px, 1fr);
    column-gap: 12px;
    padding: 16px;
  }
  .strategy-index {
    grid-row: 1 / 4;
    margin-top: 3px;
    font-size: 17px;
  }
  .strategy-card > h3, .strategy-card > p, .strategy-card-footer {
    grid-column: 2;
  }
  .strategy-card > p {
    min-height: 0px;
    line-height: 1.5;
  }
  .strategy-card-footer {
    margin: 0px;
    padding-top: 8px;
  }
  .learning-summary {
    grid-template-columns: 1fr;
    padding: 18px;
    gap: 12px;
  }
  .learning-summary > button {
    grid-column: auto;
    width: 100%;
  }
  .learning-counts {
    justify-content: flex-start;
    gap: 32px;
  }
  .context-next {
    display: block;
    padding: 18px;
  }
  .context-next button {
    margin-top: 16px;
    width: 100%;
  }
  .empty-state {
    padding: 20px;
  }
  .review-current p:last-child {
    font-size: 18px;
  }
  #decision {
    padding: 20px 18px;
    border-radius: 12px;
    min-height: 0px;
  }
}

/* Reduced motion: nonessential animation and smooth scrolling are removed; states stay equivalent. */
@media (prefers-reduced-motion: reduce) {
  *, ::before, ::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}