/* Post-model surface chapter. The particle and solid-model renderer remain independent. */

.surface-focus {
  background:
    radial-gradient(circle at 50% 46%, transparent 0 34%, rgb(var(--lab-black-rgb) / 12%) 68%),
    linear-gradient(180deg, transparent 56%, rgb(var(--lab-black-rgb) / 72%) 100%);
}

.surface-focus__bridge {
  position: absolute;
  z-index: 3;
  bottom: clamp(4.5rem, 9svh, 8.5rem);
  left: 50%;
  width: min(62rem, calc(100% - 4rem));
  color: #fff;
  opacity: 0;
  text-align: center;
  transform: translate3d(-50%, 1.2rem, 0);
}

.surface-focus__bridge h2 {
  margin: 0;
  font-size: clamp(2.35rem, 3.25vw, 5.6rem);
  font-weight: 430;
  letter-spacing: -0.052em;
  line-height: 1.16;
  word-break: keep-all;
}

.surface-focus__bridge strong {
  color: #fff;
  font-weight: 690;
}

.type-lab__intro-morph[data-surface-state="entering"] .surface-focus__bridge,
.type-lab__intro-morph[data-surface-state="ready"] .surface-focus__bridge {
  opacity: 1;
  transform: translate3d(-50%, 0, 0);
  transition:
    opacity 760ms ease 980ms,
    transform 1100ms cubic-bezier(0.16, 1, 0.3, 1) 880ms;
}

.surface-collection {
  --surface-paper: #eeece6;
  --surface-ink: #131411;
  position: relative;
  width: 100%;
  padding: clamp(7rem, 13svh, 15rem) clamp(2rem, 4.5vw, 8rem) clamp(10rem, 18svh, 20rem);
  overflow: clip;
  background:
    radial-gradient(circle at 28% 43%, rgb(255 255 255 / 58%), transparent 33%),
    var(--surface-paper);
  color: var(--surface-ink);
}

.surface-collection::before {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgb(19 20 17 / 3%) 1px, transparent 1px);
  background-size: 100% clamp(5rem, 8svh, 9rem);
  content: "";
  opacity: 0.42;
  pointer-events: none;
}

.surface-collection__heading,
.surface-collection__layout {
  position: relative;
  z-index: 1;
  width: min(210rem, 100%);
  margin-inline: auto;
}

.surface-collection__heading {
  display: grid;
  padding-bottom: clamp(3rem, 5.5svh, 6rem);
  border-bottom: 1px solid rgb(19 20 17 / 18%);
  grid-template-columns: minmax(13rem, 0.55fr) minmax(0, 1.45fr);
  align-items: end;
  gap: clamp(2rem, 5vw, 8rem);
}

.surface-collection__heading p,
.surface-collection__heading h2 {
  margin: 0;
}

.surface-collection__heading p {
  padding-bottom: 0.55em;
  color: rgb(19 20 17 / 56%);
  font-family: "Space Grotesk Lab", Arial, sans-serif;
  font-size: clamp(0.62rem, 0.62vw, 0.86rem);
  font-weight: 650;
  letter-spacing: 0.18em;
}

.surface-collection__heading h2 {
  font-size: clamp(3.5rem, 4.7vw, 9rem);
  font-weight: 570;
  letter-spacing: -0.065em;
  line-height: 0.98;
  word-break: keep-all;
}

.surface-collection__layout {
  display: grid;
  padding-top: clamp(5rem, 9svh, 10rem);
  grid-template-columns: minmax(0, 1.62fr) minmax(27rem, 0.68fr);
  align-items: center;
  gap: clamp(4rem, 6.5vw, 11rem);
}

.surface-deck {
  --surface-card-size: min(36vw, 68svh, 78rem);
  --surface-step-x: clamp(1.35rem, 0.9vw, 2.3rem);
  --surface-step-y: clamp(0.9rem, 0.62vw, 1.6rem);
  --surface-pull-x: clamp(-18rem, -8vw, -7rem);
  position: relative;
  min-width: 0;
  min-height: calc(var(--surface-card-size) + var(--surface-step-y) * 8 + 3rem);
}

.surface-deck__stack {
  position: relative;
  width: calc(var(--surface-card-size) + var(--surface-step-x) * 8);
  height: calc(var(--surface-card-size) + var(--surface-step-y) * 8);
  margin: 0;
  padding: 0;
  list-style: none;
}

.surface-card {
  position: absolute;
  top: calc(var(--surface-depth) * var(--surface-step-y));
  left: calc(var(--surface-index) * var(--surface-step-x));
  z-index: calc(var(--surface-index) + 1);
  width: var(--surface-card-size);
  height: var(--surface-card-size);
  pointer-events: none;
}

.surface-card[data-surface-active="true"] {
  z-index: 30;
}

.surface-card__sheet {
  position: absolute;
  inset: 0;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgb(19 20 17 / 18%);
  background: #f4f1eb;
  box-shadow: 0 1rem 2.8rem rgb(22 20 16 / 9%);
  opacity: 0;
  transform: translate3d(-2rem, 2.25rem, 0);
  transition:
    opacity 560ms ease,
    transform 700ms cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 500ms ease,
    filter 500ms ease;
  will-change: opacity, transform;
}

.surface-collection[data-surface-ready="true"] .surface-card__sheet {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  transition-delay: calc(var(--surface-index) * 72ms);
}

.surface-collection[data-surface-ready="true"] .surface-card[data-surface-active="true"] .surface-card__sheet {
  box-shadow: 0 2.2rem 5.8rem rgb(22 20 16 / 22%);
  transform: translate3d(var(--surface-pull-x), 0, 0) scale(1.006);
  transition-delay: 0ms;
}

.surface-card--noble[data-surface-active="true"] .surface-card__sheet {
  transform: translate3d(0, 0, 0);
}

.surface-card__sheet::after {
  position: absolute;
  inset: 0;
  border: 1px solid rgb(255 255 255 / 38%);
  content: "";
  pointer-events: none;
}

.surface-card__sheet img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  user-select: none;
}

.surface-card__sheet figcaption {
  position: absolute;
  right: 1.35rem;
  bottom: 1.25rem;
  left: 1.35rem;
  display: grid;
  padding-top: 0.85rem;
  border-top: 1px solid rgb(19 20 17 / 26%);
  color: var(--surface-ink);
  opacity: 0;
  grid-template-columns: 2.2rem minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.8rem;
  transition: opacity 300ms ease;
}

.surface-card[data-surface-active="true"] .surface-card__sheet figcaption,
.surface-card--noble .surface-card__sheet figcaption {
  opacity: 1;
}

.surface-card__sheet figcaption span,
.surface-card__sheet figcaption b,
.surface-card__sheet figcaption em {
  font-family: "Space Grotesk Lab", Arial, sans-serif;
  font-style: normal;
}

.surface-card__sheet figcaption span {
  color: rgb(19 20 17 / 48%);
  font-size: 0.62rem;
  font-weight: 650;
  letter-spacing: 0.12em;
}

.surface-card__sheet figcaption b {
  font-size: clamp(0.64rem, 0.62vw, 0.82rem);
  font-weight: 660;
  letter-spacing: 0.15em;
}

.surface-card__sheet figcaption em {
  font-size: clamp(0.74rem, 0.78vw, 1rem);
  font-weight: 560;
  letter-spacing: -0.025em;
}

.surface-card__tab {
  position: absolute;
  z-index: 3;
  top: 0;
  left: 0;
  display: flex;
  width: var(--surface-step-x);
  height: 100%;
  margin: 0;
  padding: 0.85rem 0.22rem;
  border: 0;
  border-right: 1px solid rgb(19 20 17 / 14%);
  background: rgb(244 241 235 / 96%);
  color: rgb(19 20 17 / 62%);
  cursor: pointer;
  pointer-events: auto;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  transition:
    background-color 260ms ease,
    color 260ms ease,
    transform 700ms cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform;
}

.surface-card:not(.surface-card--noble)[data-surface-active="true"] .surface-card__tab {
  transform: translate3d(var(--surface-pull-x), 0, 0);
}

.surface-card__tab:hover,
.surface-card__tab:focus-visible,
.surface-card[data-surface-active="true"] .surface-card__tab {
  background: #171813;
  color: #fff;
  outline: 0;
}

.surface-card__tab:focus-visible {
  box-shadow: inset 0 0 0 2px #fff;
}

.surface-card__tab span {
  font-family: "Space Grotesk Lab", Arial, sans-serif;
  font-size: 0.5rem;
  font-weight: 650;
  letter-spacing: 0.08em;
}

.surface-card__tab b {
  font-size: clamp(0.56rem, 0.52vw, 0.72rem);
  font-weight: 620;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.surface-card--noble .surface-card__tab {
  top: auto;
  right: 1.35rem;
  bottom: 4.7rem;
  left: auto;
  width: auto;
  height: auto;
  padding: 0.72rem 0.95rem;
  border: 1px solid rgb(19 20 17 / 20%);
  background: rgb(244 241 235 / 88%);
  color: var(--surface-ink);
  writing-mode: horizontal-tb;
  flex-direction: row;
  gap: 0.65rem;
  backdrop-filter: blur(12px);
  transform: none;
}

.surface-card--noble .surface-card__tab:hover,
.surface-card--noble .surface-card__tab:focus-visible,
.surface-card--noble[data-surface-active="true"] .surface-card__tab {
  background: #171813;
  color: #fff;
}

.surface-deck__hint {
  margin: clamp(1.5rem, 2.8svh, 2.5rem) 0 0;
  padding-left: calc(var(--surface-step-x) * 8);
  color: rgb(19 20 17 / 48%);
  font-size: clamp(0.72rem, 0.7vw, 0.9rem);
  font-weight: 520;
  letter-spacing: -0.015em;
}

.surface-feature {
  position: relative;
  max-width: 54rem;
  padding-left: clamp(2.5rem, 3.6vw, 6rem);
  border-left: 1px solid rgb(19 20 17 / 22%);
  opacity: 0;
  transform: translate3d(0, 1.8rem, 0);
}

.surface-collection[data-surface-ready="true"] .surface-feature {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  transition:
    opacity 700ms ease 850ms,
    transform 1050ms cubic-bezier(0.16, 1, 0.3, 1) 780ms;
}

.surface-feature__eyebrow,
.surface-feature h2,
.surface-feature__lead,
.surface-feature__note {
  margin: 0;
}

.surface-feature__eyebrow {
  margin-bottom: clamp(1.5rem, 2.6svh, 2.5rem);
  color: rgb(19 20 17 / 52%);
  font-family: "Space Grotesk Lab", Arial, sans-serif;
  font-size: clamp(0.58rem, 0.58vw, 0.78rem);
  font-weight: 680;
  letter-spacing: 0.18em;
}

.surface-feature h2 {
  font-family: "Space Grotesk Lab", Arial, sans-serif;
  font-size: clamp(4.4rem, 5.5vw, 10rem);
  font-weight: 510;
  letter-spacing: -0.075em;
  line-height: 0.88;
}

.surface-feature h2 sup {
  position: relative;
  top: -0.42em;
  margin-left: 0.13em;
  font-size: 0.17em;
  font-weight: 620;
  letter-spacing: 0;
}

.surface-feature__lead {
  max-width: 40rem;
  margin-top: clamp(2.5rem, 4.8svh, 4.5rem);
  font-size: clamp(1.05rem, 1.15vw, 1.55rem);
  font-weight: 470;
  letter-spacing: -0.03em;
  line-height: 1.75;
  word-break: keep-all;
}

.surface-feature__process {
  display: grid;
  max-width: 42rem;
  margin: clamp(2.5rem, 4.8svh, 4.5rem) 0;
  padding: 0;
  border-top: 1px solid rgb(19 20 17 / 24%);
  list-style: none;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.surface-feature__process li {
  display: grid;
  min-height: clamp(4.3rem, 6.5svh, 6rem);
  padding: 1rem 0;
  border-bottom: 1px solid rgb(19 20 17 / 15%);
  font-size: clamp(0.78rem, 0.78vw, 1rem);
  font-weight: 570;
  letter-spacing: -0.02em;
  grid-template-columns: 2rem minmax(0, 1fr);
  align-items: center;
  gap: 0.65rem;
}

.surface-feature__process li:nth-child(2n) {
  padding-left: 1.3rem;
  border-left: 1px solid rgb(19 20 17 / 15%);
}

.surface-feature__process span {
  color: rgb(19 20 17 / 38%);
  font-family: "Space Grotesk Lab", Arial, sans-serif;
  font-size: 0.55rem;
  font-weight: 650;
  letter-spacing: 0.1em;
}

.surface-feature__note {
  max-width: 38rem;
  color: rgb(19 20 17 / 59%);
  font-size: clamp(0.84rem, 0.86vw, 1.08rem);
  font-weight: 450;
  letter-spacing: -0.022em;
  line-height: 1.72;
  word-break: keep-all;
}

@media (max-width: 64rem) {
  .surface-collection {
    padding: 7rem 1.2rem 9rem;
  }

  .surface-collection__heading {
    display: block;
    padding-bottom: 2.5rem;
  }

  .surface-collection__heading h2 {
    margin-top: 1.25rem;
    font-size: clamp(3rem, 11vw, 5.5rem);
  }

  .surface-collection__layout {
    display: block;
    padding-top: 4rem;
  }

  .surface-deck {
    --surface-card-size: min(76vw, 34rem);
    --surface-step-x: clamp(0.95rem, 3.5vw, 1.3rem);
    --surface-step-y: clamp(0.7rem, 2.6vw, 1rem);
    --surface-pull-x: clamp(-3rem, -5vw, -1rem);
    min-height: calc(var(--surface-card-size) + var(--surface-step-y) * 8 + 5rem);
  }

  .surface-card__sheet figcaption {
    right: 0.8rem;
    bottom: 0.75rem;
    left: 0.8rem;
    padding-top: 0.6rem;
    grid-template-columns: 1.5rem minmax(0, 1fr) auto;
    gap: 0.45rem;
  }

  .surface-card__tab {
    padding-block: 0.55rem;
  }

  .surface-card__tab b {
    font-size: 0.5rem;
  }

  .surface-card--noble .surface-card__tab {
    right: 0.8rem;
    bottom: 3.8rem;
    padding: 0.55rem 0.7rem;
  }

  .surface-deck__hint {
    padding-left: 0;
    font-size: 0.72rem;
  }

  .surface-feature {
    max-width: 48rem;
    margin-top: 4rem;
    padding: 3.5rem 0 0;
    border-top: 1px solid rgb(19 20 17 / 22%);
    border-left: 0;
  }

  .surface-feature h2 {
    font-size: clamp(4rem, 16vw, 7rem);
  }

  .surface-feature__lead {
    font-size: 1rem;
  }
}

@media (max-width: 48rem) {
  .surface-focus {
    background:
      radial-gradient(circle at 50% 42%, transparent 0 25%, rgb(var(--lab-black-rgb) / 14%) 62%),
      linear-gradient(180deg, transparent 48%, rgb(var(--lab-black-rgb) / 84%) 100%);
  }

  .surface-focus__bridge {
    bottom: 8svh;
    width: calc(100% - 2rem);
  }

  .surface-focus__bridge h2 {
    font-size: clamp(1.8rem, 8vw, 2.8rem);
    line-height: 1.22;
  }

  .surface-feature__process li {
    font-size: 0.74rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .surface-focus__bridge,
  .surface-card__sheet,
  .surface-feature {
    transition: none !important;
  }

  .surface-collection .surface-card__sheet,
  .surface-collection .surface-feature {
    opacity: 1;
  }

  .surface-collection .surface-card__sheet,
  .surface-collection[data-surface-ready="true"] .surface-card[data-surface-active="true"] .surface-card__sheet,
  .surface-card--noble[data-surface-active="true"] .surface-card__sheet {
    transform: none;
  }
}

/* The post-05 bridge is intentionally smaller and quieter than the surface chapter. */
.type-lab__intro-morph[data-post05-bridge="true"] .surface-focus {
  background: transparent;
}

.type-lab__intro-morph[data-post05-bridge="true"] .surface-focus__bridge {
  top: 69svh;
  right: auto;
  bottom: auto;
  left: 50%;
  width: min(760px, calc(100vw - 48px));
  color: #111316;
  opacity: 0;
  transform: translate3d(-50%, 16px, 0);
}

.type-lab__intro-morph[data-post05-bridge="true"] .surface-focus__bridge h2 {
  color: #111316;
  font-size: clamp(30px, 1.35vw, 48px);
  line-height: 1.16;
}

.type-lab__intro-morph[data-post05-bridge="true"] .surface-focus__bridge strong {
  color: #111316;
}

.type-lab__intro-morph[data-post05-bridge="true"][data-surface-state="ready"] .surface-focus__bridge {
  opacity: 1;
  transform: translate3d(-50%, 0, 0);
  transition:
    opacity 720ms ease 180ms,
    transform 900ms cubic-bezier(0.16, 1, 0.3, 1) 120ms;
}