/* =========================================================================
   layout.css - page frame: header, hero, sections, grids, footer
   ========================================================================= */

/* ---------- Container ---------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(var(--sp-5), 4vw, var(--sp-7));
}

/* ---------- Reading progress -------------------------------------------- */
.progress {
  position: fixed;
  inset: 0 auto auto 0;
  z-index: 120;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--accent), var(--brand-green));
  will-change: transform;
}

/* ---------- Header ------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.site-header.is-stuck {
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-5);
  min-height: var(--header-h);
}

.site-nav {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

/* Below this width the three menu entries, the language menu and the theme
   toggle no longer fit on one line, so the entries move into a panel. */
@media (max-width: 760px) {
  .site-nav__list {
    position: absolute;
    top: calc(100% + var(--sp-2));
    right: 0;
    z-index: 20;
    flex-direction: column;
    align-items: stretch;
    gap: var(--sp-1);
    min-width: 12.5rem;
    padding: var(--sp-2);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease),
      visibility var(--dur);
  }

  .site-nav.is-open .site-nav__list {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

/* ---------- Hero --------------------------------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(var(--sp-8), 11vw, var(--sp-10)) clamp(var(--sp-7), 8vw, var(--sp-9));
  isolation: isolate;
}

/* Subpages keep the same backdrop but need far less vertical room. */
.hero--compact {
  padding-block: clamp(var(--sp-7), 8vw, var(--sp-9)) clamp(var(--sp-6), 6vw, var(--sp-8));
}

.hero__aurora {
  position: absolute;
  inset: -30% -10% auto -10%;
  z-index: -2;
  height: 140%;
  pointer-events: none;
  filter: blur(70px);
  opacity: var(--aurora-opacity);
}

.hero__aurora span {
  position: absolute;
  display: block;
  border-radius: 50%;
  animation: drift 26s var(--ease) infinite alternate;
}

.hero__aurora span:nth-child(1) {
  top: 10%;
  left: 4%;
  width: 34vw;
  height: 34vw;
  background: var(--brand-blue);
}

.hero__aurora span:nth-child(2) {
  top: 30%;
  right: 8%;
  width: 28vw;
  height: 28vw;
  background: var(--brand-green);
  animation-delay: -9s;
}

.hero__aurora span:nth-child(3) {
  top: 4%;
  left: 46%;
  width: 22vw;
  height: 22vw;
  background: var(--brand-red);
  opacity: 0.45;
  animation-delay: -17s;
}

@keyframes drift {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    transform: translate3d(4vw, 6vh, 0) scale(1.18);
  }
}

.hero__grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 84px 84px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 20%, transparent 80%);
  opacity: 0.5;
}

.hero__inner {
  display: grid;
  gap: clamp(var(--sp-6), 5vw, var(--sp-8));
  max-width: 64rem;
  align-items: center;
}

/* Text on the left, artwork on the right. */
.hero__inner--split {
  max-width: none;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
}

@media (max-width: 900px) {
  .hero__inner--split {
    grid-template-columns: 1fr;
  }
}

.hero__name {
  margin: var(--sp-4) 0 0;
  font-size: clamp(2.75rem, 1.4rem + 6vw, 5.5rem);
  font-weight: 100;
  letter-spacing: 0.05em;
  line-height: 1.04;
  text-transform: uppercase;
}

.hero__name span {
  color: var(--accent);
}

.hero__title {
  margin: var(--sp-4) 0 0;
  font-size: clamp(2rem, 1.3rem + 3vw, 3.6rem);
  font-weight: 100;
  letter-spacing: 0.03em;
  line-height: 1.08;
}

.hero__role {
  margin: var(--sp-5) 0 0;
  font-size: clamp(1.1rem, 0.9rem + 0.9vw, 1.55rem);
  font-weight: 300;
  color: var(--text-soft);
  letter-spacing: 0.01em;
}

.hero__lead {
  max-width: 54ch;
  margin-top: var(--sp-5);
  font-weight: 300;
  color: var(--text-soft);
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3) var(--sp-6);
  margin-top: var(--sp-6);
  font-size: 0.9rem;
  color: var(--text-muted);
}

.hero__meta li {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.hero__meta svg {
  width: 16px;
  height: 16px;
  flex: none;
  color: var(--accent);
}

/* ---------- Media -------------------------------------------------------- */
/* The artwork carries its own dark ground, so it reads as a picture rather
   than as floating shapes - rounded and lifted like a photograph would be. */
.hero__art img,
.section__art img {
  width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md);
  opacity: var(--art-opacity);
}

/* Full-width band between two sections, with a line of text over the image. */
.media-band {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.media-band img {
  display: block;
  width: 100%;
  height: clamp(15rem, 32vw, 27rem);
  object-fit: cover;
  opacity: var(--art-opacity);
}

.media-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(6, 22, 31, 0.88) 0%,
    rgba(6, 22, 31, 0.55) 45%,
    rgba(6, 22, 31, 0.1) 100%
  );
}

.media-band__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: #ffffff;
}

.media-band__overlay .eyebrow {
  color: rgba(255, 255, 255, 0.7);
}

.media-band__text {
  max-width: 28ch;
  margin: 0;
  font-size: clamp(1.35rem, 0.9rem + 2vw, 2.6rem);
  font-weight: 100;
  line-height: 1.25;
  letter-spacing: 0.01em;
}

/* ---------- Sections ----------------------------------------------------- */
.section {
  padding-block: clamp(var(--sp-8), 10vw, var(--sp-10));
}

.section--alt {
  background: var(--bg-alt);
  border-block: 1px solid var(--border);
}

.section__head {
  max-width: 68ch;
  margin-bottom: clamp(var(--sp-7), 6vw, var(--sp-9));
}

/* Heading on the left, artwork on the right. */
.section__head--art {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.78fr);
  gap: clamp(var(--sp-6), 6vw, var(--sp-8));
  align-items: center;
  max-width: none;
}

@media (max-width: 860px) {
  .section__head--art {
    grid-template-columns: 1fr;
  }

  .section__art {
    max-width: 26rem;
  }
}

/* ---------- Grids -------------------------------------------------------- */
.grid {
  display: grid;
  gap: clamp(var(--sp-5), 3vw, var(--sp-6));
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(21rem, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
}

.grid--stats {
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: var(--sp-5);
}

.split {
  display: grid;
  gap: clamp(var(--sp-7), 6vw, var(--sp-9));
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  align-items: start;
}

@media (max-width: 900px) {
  .split {
    grid-template-columns: 1fr;
  }
}

/* ---------- Footer ------------------------------------------------------- */
.site-footer {
  padding-block: clamp(var(--sp-7), 7vw, var(--sp-8)) var(--sp-6);
  background: var(--surface-sunken);
  border-top: 1px solid var(--border);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-7);
}

.site-footer__brand {
  max-width: 28rem;
}

.site-footer__brand p {
  margin-top: var(--sp-5);
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 300;
}

.site-footer__links {
  display: grid;
  gap: var(--sp-3);
  font-size: 0.9rem;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-3) var(--sp-6);
  justify-content: space-between;
  margin-top: var(--sp-7);
  padding-top: var(--sp-5);
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2) var(--sp-6);
}

/* ---------- Small screens ------------------------------------------------ */
@media (max-width: 640px) {
  :root {
    --header-h: 66px;
  }

  .site-nav {
    gap: var(--sp-1);
  }
}