/* ==========================================================================
   Responsive — mobile-first base lives in the other files; these queries
   build up the tablet and desktop compositions.
   Breakpoints: 640 · 768 · 1024 · 1280 · 1600
   ========================================================================== */

/* ---------- ≤ 1180: nav collapses to the menu ---------- */
@media (max-width: 1180px) {
  .nav__links {
    display: none;
  }

  .nav__burger {
    display: inline-flex;
  }

  .nav__tools {
    margin-inline-start: auto;
  }
}

/* ---------- Small phones ---------- */
@media (max-width: 479px) {
  :root {
    --nav-h: 64px;
  }

  .nav__cta {
    display: none;
  }

  .nav__logo {
    width: 138px;
  }

  .hero__actions .btn {
    flex: 1 1 100%;
  }

  .kit__aims {
    grid-template-columns: 1fr;
  }

  .gauge {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .channel {
    min-width: 0;
    flex: 1 1 100%;
  }

  .motto {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 767px) {
  /* Compass moves above the copy as a small bearing badge */
  .hero__inner {
    grid-template-columns: 1fr;
  }

  .hero__compass {
    position: absolute;
    top: calc(var(--nav-h) + var(--space-5));
    inset-inline-end: var(--gutter);
    opacity: 0.85;
  }

  .compass {
    width: 112px;
  }

  .compass__readout {
    display: none;
  }

  .hero__scroll {
    display: none;
  }

  .tl-item {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: var(--space-4);
  }

  .tl-item__marker {
    width: 44px;
    height: 44px;
    font-size: 0.75rem;
  }

  .timeline__rail {
    inset-inline-start: 21px;
  }

  .tl-item__card {
    padding: var(--space-4) var(--space-5);
  }

  .contact__media {
    width: 100%;
    opacity: 0.5;
  }

  .contact__media img {
    mask-image: linear-gradient(0deg, #000 0%, transparent 70%);
    -webkit-mask-image: linear-gradient(0deg, #000 0%, transparent 70%);
  }

  :root[dir="ltr"] .contact__media img {
    mask-image: linear-gradient(0deg, #000 0%, transparent 70%);
    -webkit-mask-image: linear-gradient(0deg, #000 0%, transparent 70%);
  }

  .field__track {
    --shot-h: 300px;
    gap: var(--space-4);
  }

  .shot--wide {
    width: 82vw;
  }
}

/* ---------- ≥ 640 ---------- */
@media (min-width: 640px) {
  .stat-row {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .stat {
    padding-inline: var(--space-4);
    border-inline-end: 1px solid var(--border);
  }

  .stat:first-child {
    padding-inline-start: 0;
  }

  .stat:last-child {
    border-inline-end: 0;
  }

  .stat:nth-child(even) {
    padding-inline-start: var(--space-4);
  }

  .connect__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .connect__item {
    flex-direction: column;
    align-items: flex-start;
    border-bottom: 0;
    border-top: 1px solid var(--border);
    padding-top: var(--space-5);
  }
}

/* The 4-up stat row is too tight beside the photo between 640 and 1024 */
@media (min-width: 640px) and (max-width: 1023px) {
  .stat-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stat:nth-child(2) {
    border-inline-end: 0;
  }

  .stat:nth-child(3) {
    padding-inline-start: 0;
  }
}

/* ---------- ≥ 768 (tablet) ---------- */
@media (min-width: 768px) {
  .section-head--split {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    gap: var(--space-8);
  }

  .why__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .why__step--1 { margin-top: var(--space-9); }
  .why__step--2 { margin-top: var(--space-7); }

  .pillar-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-bottom: 1px solid var(--border);
  }

  .pillar {
    padding: var(--space-6);
    border-bottom: 0;
    border-inline-start: 1px solid var(--border);
  }

  .pillar:first-child {
    border-inline-start: 0;
    padding-inline-start: 0;
  }

  .year-one__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .voice {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: var(--space-8);
  }

  .kit__head,
  .connect__head {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
    gap: var(--space-8);
    align-items: end;
  }

  .kit__head p,
  .connect__head p {
    margin-top: 0;
  }
}

/* ---------- ≥ 1024 (desktop) ---------- */
@media (min-width: 1024px) {
  .about__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    gap: var(--space-9);
  }

  .venn-wrap {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: var(--space-9);
  }

  .sites {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: var(--space-9);
  }

  .wheel-wrap {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--space-9);
  }

  .safety {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--space-9);
  }

  /* Alternating timeline around a centred trail */
  .timeline {
    gap: var(--space-4);
  }

  .timeline__rail {
    inset-inline-start: calc(50% - 1px);
  }

  .tl-item {
    grid-template-columns: minmax(0, 1fr) 56px minmax(0, 1fr);
    gap: var(--space-6);
  }

  .tl-item__marker {
    grid-column: 2;
    grid-row: 1;
  }

  .tl-item:nth-of-type(odd) .tl-item__card {
    grid-column: 1;
    grid-row: 1;
  }

  .tl-item:nth-of-type(even) .tl-item__card {
    grid-column: 3;
    grid-row: 1;
  }

  .tl-item:nth-of-type(n + 3) {
    margin-top: calc(var(--space-8) * -0.75);
  }

  .gauge {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: var(--space-8);
    align-items: center;
  }
}

/* ---------- ≥ 1280 ---------- */
@media (min-width: 1280px) {
  .gauges {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--space-8);
  }

  .gauge {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: var(--space-6);
  }

  .gauge:last-child {
    grid-column: 1 / -1;
  }
}

/* ---------- ≥ 1600: hold the composition, grow the air ---------- */
@media (min-width: 1600px) {
  :root {
    --container: 1400px;
  }
}

/* ---------- Touch devices: no hover-only affordances ---------- */
@media (hover: none) {
  .shot__btn:hover img {
    transform: none;
  }
}