/* ==========================================================================
   CREATIVE COLLECTIVE — COLLABORATIONS
   Index page + individual case study pages
   ========================================================================== */


/* --------------------------------------------------------------------------
   SHARED PAGE INTRO
   -------------------------------------------------------------------------- */

.page-intro {
  padding-block: var(--space-9) var(--space-8);
  border-bottom: 1px solid var(--color-grey-light);
}

.page-intro__label {
  margin-bottom: var(--space-5);
}

.page-intro__headline {
  font-family: var(--font-serif);
  font-size: clamp(var(--text-4xl), 7vw, 7rem);
  font-weight: 300;
  line-height: 1;
  letter-spacing: var(--tracking-tight);
  color: var(--color-ink);
}

.page-intro__body {
  margin-top: var(--space-6);
  font-size: var(--text-lg);
  color: var(--color-grey-dark);
  max-width: 52ch;
  line-height: var(--leading-relaxed);
}

/* Active nav state for collaboration pages */
.nav-links a.is-current {
  color: var(--color-ink);
}


/* --------------------------------------------------------------------------
   COLLABORATIONS INDEX GRID
   -------------------------------------------------------------------------- */

.collab-index {
  padding-block: var(--space-9);
}

.collab-index-grid {
  display: grid;
  gap: clamp(var(--space-8), 6vw, var(--space-10));
}

@media (min-width: 768px) {
  .collab-index-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8) var(--space-7);
  }

  .collab-index-card--featured {
    grid-column: 1 / -1;
  }
}

.collab-index-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.collab-index-card__image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 2;
  background-color: var(--color-surface);
}

.collab-index-card--featured .collab-index-card__image {
  aspect-ratio: 16 / 7;
}

.collab-index-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.collab-index-card:hover .collab-index-card__image img {
  transform: scale(1.03);
}

.collab-index-card__body {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: var(--space-4);
}

.collab-index-card__main {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.collab-index-card__num {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-grey-mid);
}

.collab-index-card__title {
  font-family: var(--font-serif);
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  font-weight: 400;
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-tight);
  color: var(--color-ink);
  transition: color var(--transition-fast);
}

.collab-index-card:hover .collab-index-card__title {
  color: var(--color-grey-dark);
}

.collab-index-card__desc {
  font-size: var(--text-sm);
  color: var(--color-grey-dark);
  max-width: 52ch;
  line-height: var(--leading-normal);
  margin-top: var(--space-1);
}

.collab-index-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  margin-top: var(--space-3);
}

.collab-index-card__tag {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-grey-mid);
}

.collab-index-card__year {
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: var(--tracking-wider);
  color: var(--color-grey-mid);
  white-space: nowrap;
  padding-top: 2px;
  flex-shrink: 0;
}


/* --------------------------------------------------------------------------
   CASE STUDY — BREADCRUMB
   -------------------------------------------------------------------------- */

.case-breadcrumb {
  padding-block: var(--space-5);
  border-bottom: 1px solid var(--color-grey-light);
}

.case-breadcrumb__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-grey-mid);
  transition: color var(--transition-fast), gap var(--transition-base);
}

.case-breadcrumb__link::before {
  content: '←';
  transition: transform var(--transition-base);
}

.case-breadcrumb__link:hover {
  color: var(--color-ink);
}

.case-breadcrumb__link:hover::before {
  transform: translateX(-4px);
}


/* --------------------------------------------------------------------------
   CASE STUDY — HERO
   -------------------------------------------------------------------------- */

.case-hero {
  position: relative;
  overflow: hidden;
  background-color: var(--color-surface);
  max-height: 80vh;
  aspect-ratio: 16 / 8;
}

.case-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

@media (min-width: 768px) {
  .case-hero {
    aspect-ratio: 16 / 6;
  }
}


/* --------------------------------------------------------------------------
   CASE STUDY — HEADER
   -------------------------------------------------------------------------- */

.case-header {
  padding-block: var(--space-8);
  border-bottom: 1px solid var(--color-grey-light);
}

.case-header__num {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-grey-mid);
  margin-bottom: var(--space-5);
}

.case-header__main {
  display: grid;
  gap: var(--space-6);
  align-items: end;
}

@media (min-width: 768px) {
  .case-header__main {
    grid-template-columns: 3fr 2fr;
    gap: var(--space-8);
  }
}

.case-header__title {
  font-family: var(--font-serif);
  font-size: clamp(var(--text-4xl), 7vw, 7rem);
  font-weight: 300;
  line-height: 1;
  letter-spacing: var(--tracking-tight);
  color: var(--color-ink);
}

.case-header__meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding-top: var(--space-5);
}

@media (min-width: 768px) {
  .case-header__meta {
    padding-top: 0;
    padding-bottom: 0.25rem;
  }
}

.case-meta-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.case-meta-item__label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-grey-mid);
}

.case-meta-item__value {
  font-size: var(--text-sm);
  color: var(--color-ink);
  max-width: none;
  line-height: var(--leading-snug);
}


/* --------------------------------------------------------------------------
   CASE STUDY — BODY
   -------------------------------------------------------------------------- */

.case-body {
  padding-block: var(--space-9);
}

.case-section {
  display: grid;
  gap: var(--space-5);
  padding-block: var(--space-7);
  border-bottom: 1px solid var(--color-grey-light);
}

.case-section:first-child {
  padding-top: 0;
}

@media (min-width: 900px) {
  .case-section {
    grid-template-columns: 1fr 3fr;
    gap: var(--space-9);
    align-items: start;
  }
}

.case-section__label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-grey-mid);
  padding-top: 0.2em;
}

.case-section__content p {
  font-size: var(--text-lg);
  color: var(--color-grey-dark);
  line-height: var(--leading-relaxed);
  max-width: 60ch;
}

.case-section__content p + p {
  margin-top: var(--space-4);
}


/* --------------------------------------------------------------------------
   CASE STUDY — TEAM CREDITS
   -------------------------------------------------------------------------- */

.case-team-grid {
  display: flex;
  flex-direction: column;
}

.case-team-row {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: var(--space-4);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-grey-light);
}

.case-team-row:first-child {
  border-top: 1px solid var(--color-grey-light);
}

.case-team-row__role {
  font-size: var(--text-sm);
  color: var(--color-grey-mid);
  max-width: none;
  line-height: var(--leading-snug);
}

.case-team-row__name {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-ink);
  max-width: none;
  line-height: var(--leading-snug);
}

.case-team-row__name--director {
  color: var(--color-accent);
}


/* --------------------------------------------------------------------------
   CASE STUDY — INLINE IMAGE
   -------------------------------------------------------------------------- */

.case-image {
  padding-block: var(--space-8);
}

.case-image__wrap {
  overflow: hidden;
  background-color: var(--color-surface);
  aspect-ratio: 16 / 9;
}

.case-image__wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-image__caption {
  margin-top: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-grey-mid);
  letter-spacing: var(--tracking-wide);
  font-style: italic;
}


/* --------------------------------------------------------------------------
   CASE STUDY — GALLERY
   -------------------------------------------------------------------------- */

.case-gallery {
  padding-block: var(--space-8);
  border-top: 1px solid var(--color-grey-light);
}

.case-gallery__label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-grey-mid);
  margin-bottom: var(--space-5);
}

.case-gallery__grid {
  display: grid;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .case-gallery__grid--two {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-gallery__grid--three {
    grid-template-columns: repeat(3, 1fr);
  }
}

.case-gallery__item {
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background-color: var(--color-surface);
}

.case-gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.case-gallery__item:hover img {
  transform: scale(1.04);
}


/* --------------------------------------------------------------------------
   CASE STUDY — PROJECT NAVIGATION
   -------------------------------------------------------------------------- */

.case-nav {
  padding-block: var(--space-8);
  border-top: 1px solid var(--color-grey-light);
}

.case-nav__inner {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  gap: var(--space-4);
}

.case-nav__item {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.case-nav__item--next {
  text-align: right;
  align-items: flex-end;
}

.case-nav__dir {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-grey-mid);
}

.case-nav__title {
  font-family: var(--font-serif);
  font-size: clamp(var(--text-xl), 3vw, var(--text-3xl));
  font-weight: 400;
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-tight);
  color: var(--color-ink);
  transition: color var(--transition-fast);
}

.case-nav__item:hover .case-nav__title {
  color: var(--color-grey-dark);
}


/* --------------------------------------------------------------------------
   CASE STUDY — INLINE CTA
   -------------------------------------------------------------------------- */

.case-cta {
  background-color: var(--color-surface);
  padding-block: var(--space-10);
  text-align: center;
}

.case-cta__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
}

.case-cta__headline {
  font-family: var(--font-serif);
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 400;
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-tight);
  color: var(--color-ink);
  max-width: 22ch;
}


/* --------------------------------------------------------------------------
   INDEX HERO — "THE ASSEMBLY"
   The project list on the left drives the stage on the right. The stage is
   built and animated by code/js/collaborations.js, and stays hidden until
   that script has run.
   -------------------------------------------------------------------------- */

.collab-hero {
  padding-bottom: var(--space-7);
  overflow: hidden;
}

.collab-hero__body {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.collab-hero .page-intro__body {
  margin-top: 0;
}

@media (min-width: 900px) {
  .collab-hero__body {
    grid-template-columns: 5fr 7fr;
    gap: var(--space-8);
    align-items: center;
  }
}

/* Project list */

.assembly-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  column-gap: var(--space-5);
  margin-top: var(--space-7);
}

.assembly-list__link {
  display: flex;
  align-items: baseline;
  gap: var(--space-4);
  padding-block: var(--space-3);
  border-top: 1px solid var(--color-grey-light);
  color: var(--color-grey-mid);
  transition: color var(--transition-base);
}

.assembly-list__num {
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wider);
  font-variant-numeric: tabular-nums;
  transition: color var(--transition-base);
}

.assembly-list__name {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  line-height: var(--leading-snug);
}

.assembly-list__link:hover,
.assembly-list__link:focus-visible,
.assembly-list__item.is-active .assembly-list__link {
  color: var(--color-ink);
}

.assembly-list__item.is-active .assembly-list__num {
  color: var(--color-accent);
}

/* Eleven projects: the list stays two columns at every width, so the hero
   doesn't grow taller than the stage beside it */
@media (min-width: 900px) {
  .assembly-list {
    column-gap: var(--space-6);
  }
}

/* Stage */

.assembly {
  display: none;
  position: relative;
  height: 26rem;
}

.assembly.is-ready {
  display: block;
}

@media (min-width: 900px) {
  .assembly {
    height: clamp(28rem, 42vw, 36rem);
  }
}

.assembly__numeral {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-size: clamp(12rem, 26vw, 22rem);
  font-weight: 300;
  line-height: 1;
  letter-spacing: var(--tracking-tight);
  color: var(--color-grey-light);
  opacity: 0;
  transition: opacity 700ms ease;
  user-select: none;
}

.assembly__numeral.is-visible {
  opacity: 1;
}

.assembly__lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.assembly__lines line {
  stroke: var(--color-ink);
  stroke-width: 1;
  stroke-opacity: 0.4;
  opacity: 0;
}

/* A node is a zero-size anchor moved by the script; the dot and label hang off it */

.assembly__node {
  position: absolute;
  top: 0;
  left: 0;
  will-change: transform;
}

.assembly__dot {
  position: absolute;
  top: -3px;
  left: -3px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-ink);
  opacity: 0.55;
  transition: transform 600ms ease, opacity 600ms ease;
}

.assembly.is-assembled .assembly__dot {
  opacity: 0.2;
}

.assembly.is-assembled .is-member .assembly__dot {
  opacity: 1;
  transform: scale(1.5);
}

/* V. is the fixed centre: a name rather than a dot, centred on the point */

.assembly__node--director .assembly__dot {
  display: none;
}

.assembly__node--director .assembly__label {
  top: 0;
  flex-direction: column-reverse;
  gap: var(--space-1);
  transform: translateY(-50%);
}

.assembly__label {
  position: absolute;
  top: var(--space-4);
  left: 0;
  width: 8.5rem;
  margin-left: -4.25rem;
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-align: center;
  opacity: 0;
  transition: opacity 350ms ease;
  pointer-events: none;
}

.assembly__node--above .assembly__label {
  top: auto;
  bottom: var(--space-4);
}

.is-labelled .assembly__label,
.assembly__node--director .assembly__label {
  opacity: 1;
}

.assembly__role {
  font-size: 0.625rem;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-grey-mid);
}

.assembly__name {
  font-size: var(--text-sm);
  font-weight: 500;
  line-height: 1.3;
  color: var(--color-ink);
}

.assembly__node--director .assembly__name {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  font-weight: 400;
  line-height: 1;
  color: var(--color-accent);
}

@media (prefers-reduced-motion: reduce) {
  .assembly__numeral,
  .assembly__dot,
  .assembly__label {
    transition: none;
  }
}