/* Four Degree North — Project Detail Page
   Scroll-driven, parallax-depth, full-symmetry layout
   Uses same design tokens as styles.css
   ──────────────────────────────────────────────────── */

/* ── Project Hero ─────────────────────────────────── */
.proj-hero {
  --scene-progress: 0;
  --hero-frame-opacity: 0.2;
  --hero-frame-scale: 1.03;
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: end;
  overflow: hidden;
  isolation: isolate;
  padding: calc(var(--header) + var(--shell)) var(--shell) clamp(var(--xxl), 5vw, var(--xxxl));
  background: var(--ink);
}

.proj-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(circle at 30% 30%, rgba(236,31,51,0.12), transparent 24%),
    linear-gradient(180deg, rgba(20,18,15,0.12), rgba(20,18,15,0.82));
  pointer-events: none;
}

.proj-hero::after {
  content: "";
  position: absolute;
  inset: 8%;
  z-index: 1;
  border: 1px solid rgba(255,250,240,0.12);
  opacity: var(--hero-frame-opacity);
  transform: scale(var(--hero-frame-scale));
  pointer-events: none;
}

.proj-hero__backdrop {
  --parallax-y: 0px;
  position: absolute;
  inset: -16%;
  z-index: 0;
  background-size: cover;
  background-position: center calc(50% + var(--parallax-y));
  background-repeat: no-repeat;
  filter: saturate(0.82) contrast(1.02);
  transform: scale(1.04);
}

.proj-hero__content {
  width: min(var(--content-max), calc(100% - (var(--shell) * 2)));
  max-width: 1260px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.proj-hero__back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: var(--xxl);
  color: rgba(255,250,240,0.5);
  font-size: var(--fs-label);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  transition: color 0.3s var(--ease-out);
}

.proj-hero__back:hover {
  color: var(--red);
}

.proj-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 1.1rem;
  color: var(--red);
  font-size: var(--fs-label);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.proj-hero__kicker::before {
  content: "";
  width: 28px;
  height: 1px;
  background: currentColor;
}

.proj-hero__title {
  margin: 0;
  color: rgba(255,250,240,0.94);
  font-family: var(--serif);
  font-size: var(--fs-display);
  font-weight: 300;
  line-height: 0.96;
  letter-spacing: -0.03em;
  text-shadow: 0 14px 42px rgba(0,0,0,0.32);
}

.proj-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.proj-hero__meta span {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 0.9rem;
  border: 1px solid rgba(255,250,240,0.18);
  background: rgba(20,18,15,0.24);
  color: rgba(255,250,240,0.72);
  font-size: 0.64rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  backdrop-filter: blur(14px);
}

/* ── Project Section Container ────────────────────── */
.proj-section {
  padding: var(--section-block) var(--shell);
  border-top: 1px solid var(--line);
}

.proj-section__inner {
  max-width: var(--content-max);
  margin: 0 auto;
}

/* ── Overview (Split Layout) ──────────────────────── */
.proj-split {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--xxl);
}

.proj-split__title {
  margin: 0;
  font-family: var(--serif);
  font-size: var(--fs-title);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.proj-split__right p {
  margin: 0;
  color: var(--ink-soft);
  font-size: var(--fs-body);
  line-height: 1.8;
}

.proj-split__right p + p {
  margin-top: 1rem;
}

/* ── Specs Table ──────────────────────────────────── */
.proj-specs {
  margin-top: var(--xxl);
  border-top: 1px solid var(--line);
}

.proj-specs__row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 1rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line);
}

.proj-specs__row strong {
  color: var(--red);
  font-size: var(--fs-label);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.proj-specs__row span {
  color: var(--ink-soft);
  font-size: 0.92rem;
  line-height: 1.72;
}

/* ── Gallery Grid ─────────────────────────────────── */
.proj-gallery {
  background: var(--paper-deep);
}

.proj-gallery__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--lg);
}

.proj-gallery__item {
  margin: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.proj-gallery__item--wide {
  grid-column: 1 / -1;
}

.proj-gallery__media {
  --mask-top: 14%;
  --mask-side: 5%;
  --image-scale: 1.05;
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 2;
}

.proj-gallery__item--wide .proj-gallery__media {
  aspect-ratio: 21 / 9;
}

.proj-gallery__image {
  --parallax-y: 0px;
  position: absolute;
  inset: -12%;
  background-size: cover;
  background-position: center calc(50% + var(--parallax-y));
  filter: saturate(0.92) contrast(1.02);
  clip-path: inset(var(--mask-top) var(--mask-side) 0 var(--mask-side));
  transform: scale(var(--image-scale));
  transform-origin: center;
  transition: clip-path 0.2s linear, transform 0.7s var(--ease-out);
}

.proj-gallery__item figcaption {
  padding: var(--lg) 0 0;
  color: var(--ink-soft);
  font-size: var(--fs-label);
  line-height: 1.6;
  letter-spacing: 0.02em;
}

/* ── Narrative Quote ──────────────────────────────── */
.proj-narrative {
  background: var(--ink);
  padding: calc(var(--section-block) * 2) var(--shell);
}

.proj-narrative__content {
  max-width: 860px;
  margin: 0 auto;
}

.proj-narrative__quote {
  margin: 0;
  padding: 0;
  border: 0;
  color: rgba(255,250,240,0.88);
  font-family: var(--serif);
  font-size: var(--fs-heading);
  font-weight: 300;
  font-style: italic;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.proj-narrative__quote .word {
  display: inline-block;
  opacity: 0;
  filter: blur(8px);
  transition: opacity 0.6s var(--ease-out), filter 0.6s var(--ease-out);
  transition-delay: calc(var(--word-index) * 60ms);
}

.proj-narrative__quote.is-visible .word {
  opacity: 1;
  filter: blur(0);
}

.proj-narrative__attr {
  margin-top: var(--xl);
  color: var(--red);
  font-size: var(--fs-label);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* ── Next Project ─────────────────────────────────── */
.proj-next {
  background: var(--paper-deep);
}

.proj-next__link {
  display: grid;
  grid-template-columns: 0.5fr 1fr;
  gap: var(--xxl);
  align-items: center;
  margin-top: var(--xl);
  text-decoration: none;
  color: inherit;
  transition: opacity 0.35s var(--ease-out);
}

.proj-next__link:hover {
  opacity: 0.88;
}

.proj-next__link:hover .proj-next__image {
  transform: scale(1.06);
}

.proj-next__image-wrap {
  --mask-top: 10%;
  --mask-side: 4%;
  --image-scale: 1.03;
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.proj-next__image {
  --parallax-y: 0px;
  position: absolute;
  inset: -10%;
  background-size: cover;
  background-position: center calc(50% + var(--parallax-y));
  filter: saturate(0.92) contrast(1.02);
  clip-path: inset(var(--mask-top) var(--mask-side) 0 var(--mask-side));
  transform: scale(var(--image-scale));
  transform-origin: center;
  transition: clip-path 0.2s linear, transform 0.7s var(--ease-out);
}

.proj-next__info h2 {
  margin: 0 0 var(--lg);
  font-family: var(--serif);
  font-size: var(--fs-title);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.02em;
  transition: color 0.35s var(--ease-out);
}

.proj-next__link:hover .proj-next__info h2 {
  color: var(--red);
}

.proj-next__info span {
  color: var(--ink-soft);
  font-size: var(--fs-label);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* ── Project CTA ──────────────────────────────────── */
.proj-cta {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper-warm);
  padding: calc(var(--section-block) * 2) var(--shell);
}

.proj-cta__backdrop {
  --parallax-y: 0px;
  position: absolute;
  inset: -16%;
  background-size: cover;
  background-position: center calc(50% + var(--parallax-y));
  filter: saturate(0.6) contrast(1.1);
  opacity: 0.15;
  pointer-events: none;
}

.proj-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(circle at 50% 50%, transparent 20%, rgba(20,18,15,0.6) 70%),
    linear-gradient(180deg, rgba(20,18,15,0.4), rgba(20,18,15,0.9));
  pointer-events: none;
}

.proj-cta__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) auto;
  gap: 2rem;
  align-items: end;
}

.proj-cta__copy h2 {
  margin: 0;
  color: var(--paper-warm);
  font-family: var(--serif);
  font-size: var(--fs-title);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.proj-cta__copy p {
  margin: 0;
  max-width: 42ch;
  color: rgba(255,250,240,0.66);
  font-size: var(--fs-body);
  line-height: 1.8;
}

.proj-cta__copy p:last-child {
  margin-top: 1.2rem;
}

.proj-cta__actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 1100px) {
  .proj-split,
  .proj-cta__inner {
    grid-template-columns: 1fr;
  }

  .proj-next__link {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 980px) {
  .proj-gallery__grid {
    grid-template-columns: 1fr;
  }

  .proj-gallery__item--wide {
    grid-column: auto;
  }
}

@media (max-width: 720px) {
  .proj-hero {
    padding-top: calc(var(--header) + 4rem);
    padding-bottom: 2.4rem;
  }

  .proj-hero__title {
    font-size: clamp(2.2rem, 10vw, 4rem);
  }

  .proj-specs__row {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }

  .proj-narrative__quote {
    font-size: var(--fs-subheading);
  }
}

/* ── Large Screen Cap ────────────────────────────── */
@media (min-width: 1441px) {
  .proj-hero,
  .proj-section,
  .proj-narrative,
  .proj-next,
  .proj-cta {
    padding-left: max(var(--shell), calc((100vw - 1440px) / 2 + var(--shell)));
    padding-right: max(var(--shell), calc((100vw - 1440px) / 2 + var(--shell)));
  }
}