/* =========================
   Responsive
   Base styles are mobile-first; these layers add layout as space allows.
========================= */

/* Fluid grids that need no breakpoints */
.grid-projects {
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 19rem), 1fr));
}

.grid-projects--editorial .project--feature {
  grid-column: 1 / -1;
}

.people {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17.5rem), 1fr));
}

/* ---------- Small phones ---------- */
@media (max-width: 30em) {
  .hero__actions .btn {
    width: 100%;
  }

  .cta .btn {
    width: 100%;
  }

  .form__actions .btn {
    width: 100%;
  }
}

/* ---------- >= 40em (640px) ---------- */
@media (min-width: 40em) {
  .facts__list {
    grid-template-columns: repeat(3, 1fr);
  }

  .fact {
    padding-block: 2rem;
  }

  .fact + .fact {
    padding-left: var(--space-lg);
    border-top: 0;
    border-left: 1px solid var(--color-line);
  }

  .featured__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .featured__grid .project--feature {
    grid-column: 1 / -1;
  }

  .capability-grid {
    grid-template-columns: repeat(2, 1fr);
    column-gap: var(--space-lg);
  }

  .form {
    grid-template-columns: repeat(2, 1fr);
    column-gap: var(--space-md);
  }

  .field--wide {
    grid-column: 1 / -1;
  }

  .keyinfo > div {
    grid-template-columns: 11rem 1fr;
    align-items: baseline;
  }

  .site-footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .site-footer__brand {
    grid-column: 1 / -1;
  }

  .timeline {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg) var(--space-md);
  }

  .timeline__step,
  .timeline__step:last-child {
    padding: 1.75rem 0 0;
    border-left: 0;
    border-top: 1px solid var(--color-line-strong);
  }

  .timeline__step::before {
    top: -0.4rem;
    left: 0;
  }
}

/* ---------- >= 60em (960px): desktop layout ---------- */
@media (min-width: 60em) {
  :root {
    --header-height: 5rem;
  }

  /* Navigation */
  .menu-toggle {
    display: none;
  }

  .site-nav {
    position: static;
    z-index: auto;
    flex-direction: row;
    align-items: center;
    gap: 2.5rem;
    padding: 0;
    overflow: visible;
    background: none;
    visibility: visible;
    opacity: 1;
    transform: none;
    transition: none;
  }

  .site-nav__home {
    display: none;
  }

  .site-nav__list {
    display: flex;
    gap: 2rem;
  }

  .site-nav__list a {
    position: relative;
    min-height: 2.75rem;
    font-size: 0.9375rem;
    letter-spacing: 0;
    color: rgba(255, 255, 255, 0.86);
    border: 0;
    transition: color var(--duration) var(--ease);
  }

  .site-nav__list a::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 0.5rem;
    left: 0;
    height: 1px;
    background: currentColor;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--duration) var(--ease);
  }

  .site-nav__list a:hover {
    color: #fff;
  }

  .site-nav__list a:hover::after,
  .site-nav__list a[aria-current="page"]::after {
    transform: scaleX(1);
  }

  .site-nav__list a[aria-current="page"] {
    color: #fff;
  }

  .site-nav__list a[aria-current="page"]::after {
    background: var(--color-accent-soft);
  }

  .site-nav__cta {
    margin-top: 0;
  }

  /* Editorial layouts */
  .section-head--split {
    grid-template-columns: 1fr 1fr;
    align-items: end;
    column-gap: var(--space-xl);
  }

  .split {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    column-gap: clamp(2rem, 6vw, 6rem);
  }

  .split--even {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: center;
  }

  .intro__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: var(--space-md);
    row-gap: var(--space-xl);
    align-items: start;
  }

  .intro__head {
    grid-column: 1 / 7;
  }

  .intro__text {
    grid-column: 8 / 13;
    padding-top: 1.75rem;
  }

  .intro__figure {
    grid-column: 1 / -1;
  }

  .intro__figure img {
    aspect-ratio: 21 / 9;
  }

  .services__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    column-gap: clamp(2rem, 6vw, 6rem);
  }

  .services__head {
    position: sticky;
    top: calc(var(--header-height) + 2rem);
    align-self: start;
  }

  .service-row__link {
    grid-template-columns: 3rem minmax(0, 1fr) 1.5rem;
    padding-block: 1.75rem;
  }

  .service-list:not(.service-list--plain) .service-row__link {
    grid-template-columns: 3rem minmax(0, 1fr) 11rem 1.5rem;
  }

  .service-list:not(.service-list--plain) .service-row__sector {
    display: block;
    padding-top: 0.45rem;
  }

  .sector-item {
    grid-template-columns: 3rem 1fr;
  }

  .link-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--space-lg);
  }

  /* Projects */
  .featured__grid .project--feature .project__link,
  .grid-projects--editorial:not(.is-filtered) .project--feature .project__link {
    position: relative;
    display: block;
  }

  .featured__grid .project--feature .project__media img,
  .grid-projects--editorial:not(.is-filtered) .project--feature .project__media img {
    aspect-ratio: 21 / 9;
  }

  .featured__grid .project--feature .project__body,
  .grid-projects--editorial:not(.is-filtered) .project--feature .project__body {
    position: absolute;
    inset: auto 0 0 0;
    padding: clamp(4rem, 8vw, 6rem) clamp(1.5rem, 3vw, 2.75rem) clamp(1.5rem, 3vw, 2.75rem);
    color: #fff;
    background: linear-gradient(0deg, rgba(6, 18, 32, 0.94) 0%, rgba(6, 18, 32, 0.78) 50%, rgba(6, 18, 32, 0) 100%);
  }

  .featured__grid .project--feature .label,
  .featured__grid .project--feature .link-arrow,
  .grid-projects--editorial:not(.is-filtered) .project--feature .label,
  .grid-projects--editorial:not(.is-filtered) .project--feature .link-arrow {
    color: var(--color-accent-soft);
  }

  .featured__grid .project--feature .project__meta dt,
  .grid-projects--editorial:not(.is-filtered) .project--feature .project__meta dt {
    color: var(--color-on-dark-muted);
  }

  .featured__grid .project--feature .project__title,
  .grid-projects--editorial:not(.is-filtered) .project--feature .project__title {
    font-size: clamp(1.75rem, 3.2vw, 2.75rem);
  }

  .featured__grid .project--feature .project__body .link-arrow,
  .grid-projects--editorial:not(.is-filtered) .project--feature .project__body .link-arrow {
    margin-top: 1rem;
    padding-top: 0;
  }

  .grid-projects--editorial {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .grid-projects--editorial .project {
    grid-column: span 2;
  }

  .grid-projects--editorial .project--feature {
    grid-column: 1 / -1;
  }

  .grid-projects--editorial .project:nth-child(2),
  .grid-projects--editorial .project:nth-child(3) {
    grid-column: span 3;
  }

  .grid-projects--editorial.is-filtered .project,
  .grid-projects--editorial.is-filtered .project--feature {
    grid-column: span 2;
  }

  .project-detail__hero img {
    aspect-ratio: 21 / 9;
  }

  /* Capabilities, why, values */
  .capability-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .why__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    column-gap: clamp(3rem, 7vw, 7rem);
  }

  .values {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    column-gap: var(--space-lg);
  }

  /* CTA, contact, footer */
  .cta__inner {
    grid-template-columns: 1fr auto;
  }

  .cta .btn {
    justify-self: end;
  }

  .contact {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    column-gap: clamp(3rem, 8vw, 8rem);
    align-items: start;
  }

  .site-footer__grid {
    grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
    column-gap: var(--space-lg);
  }

  .site-footer__brand {
    grid-column: auto;
  }
}

/* ---------- >= 75em (1200px) ---------- */
@media (min-width: 75em) {
  .capability-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .timeline {
    grid-template-columns: repeat(6, 1fr);
    gap: 0 var(--space-md);
  }
}

/* ---------- Large screens ---------- */
@media (min-width: 100em) {
  :root {
    --container-width: 1360px;
  }
}

/* ---------- Short viewports: keep the hero usable ---------- */
@media (max-height: 40em) and (min-width: 60em) {
  .hero__inner {
    padding-top: calc(var(--header-height) + 2rem);
  }
}

/* ---------- Data table as a real table on wider screens ---------- */
@media (min-width: 60em) {
  .data-table thead {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    clip: auto;
  }

  .data-table tr {
    display: table-row;
    padding: 0;
  }

  .data-table th,
  .data-table td {
    display: table-cell;
    padding: 1rem 1rem 1rem 0;
    vertical-align: baseline;
    border-bottom: 1px solid var(--color-line);
  }

  .data-table th::before,
  .data-table td::before {
    content: none;
  }

  .data-table thead th {
    padding-block: 0.85rem;
    font-size: var(--text-label);
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-muted);
    border-bottom: 1px solid var(--color-line-strong);
  }
}