/* ═══════════════════════════════════════════════════════════
   PROJECT PAGES — shared layout
   gcn.html / mechatronics.html / sandoz.html / bosch.html
═══════════════════════════════════════════════════════════ */

/* ── Body background: ivory so hero peel reveals correct colour ── */
body {
  background-color: var(--ivory);
}

/* ── Nav on dark hero: gold until scrolled past ─────────── */
.nav:not(.scrolled) .nav-logo,
.nav:not(.scrolled) .nav-link {
  color: var(--gold);
}

/* ── Nav active state ───────────────────────────────────── */
.nav-link--active {
  color: var(--gold);
}
.nav-link--active::after {
  width: 100%;
}

/* ── Hero ───────────────────────────────────────────────── */
.proj-hero {
  position: relative;
  min-height: 100svh;
  background: var(--dark);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding-top: calc(var(--nav-h) + clamp(2rem, 5vw, 4rem));
  padding-bottom: clamp(3rem, 6vw, 5rem);
  padding-inline: var(--gutter);
  overflow: hidden;
}

.proj-hero-bg {
  position: absolute;
  inset: 0;
  background: var(--dark);
  z-index: 0;
  will-change: transform;
}

.proj-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.3;
  display: block;
}

.proj-hero-number {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-size: clamp(4rem, 9vw, 8rem);
  color: var(--gold);
  line-height: 1;
  opacity: 0.85;
}

.proj-hero-bottom {
  position: relative;
  z-index: 1;
}

.proj-hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 7rem);
  color: var(--ivory);
  line-height: 1.04;
  margin: 0 0 var(--sp-5);
  max-width: 16ch;
}

.proj-hero-descriptor {
  font-family: var(--font-body);
  font-size: clamp(0.875rem, 1.3vw, 1.0625rem);
  color: var(--silver);
  margin: 0 0 var(--sp-4);
  letter-spacing: 0.01em;
}

.proj-hero-meta {
  font-family: var(--font-body);
  font-size: 0.7rem;
  color: rgba(176, 190, 197, 0.5);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0;
}

/* ── Section marker ─────────────────────────────────────── */
.proj-marker {
  display: block;
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: var(--sp-8);
}

/* ── Problem statement ──────────────────────────────────── */
.proj-problem {
  background: var(--ivory);
  padding-top: 140px;
  padding-bottom: 160px;
  padding-inline: var(--gutter);
}

.proj-problem-inner {
  max-width: 860px;
}

.proj-statement {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 3rem);
  color: #C5C0B8;
  line-height: 1.32;
  margin: 0;
}

/* ── Design decisions ───────────────────────────────────── */
.proj-decisions {
  background: var(--ivory);
  padding-bottom: clamp(4rem, 8vw, 8rem);
}

.proj-decision-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 5vw, 5rem);
  padding-inline: var(--gutter);
  padding-top: clamp(4rem, 8vw, 7.5rem);
  align-items: center;
}

.proj-decision-block:nth-child(even) .proj-decision-image { order: 2; }
.proj-decision-block:nth-child(even) .proj-decision-text  { order: 1; }

.proj-decision-image {
  aspect-ratio: 4 / 3;
  background: var(--dark);
  overflow: hidden;
  border-radius: var(--radius);
  clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
  will-change: clip-path;
}

.proj-decision-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.proj-decision-num {
  display: block;
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: var(--sp-4);
}

.proj-decision-heading {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2vw, 1.875rem);
  color: #1A1A1A;
  line-height: 1.2;
  margin: 0 0 var(--sp-5);
}

.proj-decision-text {
  will-change: opacity, transform;
}

.proj-decision-body {
  font-family: var(--font-body);
  font-size: 1rem;
  color: rgba(26, 26, 26, 0.6);
  line-height: 1.8;
  margin: 0;
}

/* ── Validation ─────────────────────────────────────────── */
.proj-validation {
  background: var(--dark);
  padding-top: clamp(4rem, 8vw, 7rem);
  padding-bottom: clamp(4rem, 8vw, 7rem);
  padding-inline: var(--gutter);
}

.proj-stats {
  display: flex;
  gap: clamp(2.5rem, 7vw, 7rem);
  margin-bottom: clamp(3rem, 6vw, 5rem);
  flex-wrap: wrap;
}

.proj-stat-item {}

.proj-stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(3rem, 5vw, 5rem);
  color: var(--ivory);
  line-height: 1;
  margin-bottom: var(--sp-3);
}

.proj-stat-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  color: var(--silver);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.proj-validation-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(0.75rem, 1.5vw, 1.25rem);
}

.proj-validation-img {
  aspect-ratio: 16 / 10;
  background: #111;
  border-radius: var(--radius);
  overflow: hidden;
  will-change: clip-path;
}

.proj-validation-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ── Result ─────────────────────────────────────────────── */
.proj-result {
  background: var(--ivory);
  padding-top: clamp(4rem, 8vw, 7rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
  padding-inline: var(--gutter);
}

.proj-result-statement {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 3.5rem);
  color: #1A1A1A;
  max-width: 800px;
  line-height: 1.2;
  margin: 0;
  will-change: opacity, transform;
}

/* ── What this shows ────────────────────────────────────── */
.proj-shows {
  background: var(--ivory);
  padding-top: 100px;
  padding-bottom: 100px;
  padding-inline: var(--gutter);
  border-top: 1px solid rgba(26, 26, 26, 0.08);
}

.proj-shows-text {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 1.0625rem;
  color: rgba(26, 26, 26, 0.55);
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
  will-change: opacity, transform;
}

/* ── Next project CTA ───────────────────────────────────── */
.proj-next {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 280px;
  background: var(--dark);
  padding-inline: var(--gutter);
  text-decoration: none;
  transition: background 0.4s ease;
}

.proj-next:hover { background: #111; }

.proj-next-left {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.proj-next-label {
  font-family: var(--font-body);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--silver);
  opacity: 0.6;
}

.proj-next-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 3.5rem);
  color: var(--ivory);
  line-height: 1.1;
}

.proj-next-arrow {
  font-size: clamp(2rem, 4vw, 3.5rem);
  color: var(--silver);
  opacity: 0.5;
  transition: color 0.25s ease, opacity 0.25s ease, transform 0.3s ease;
  user-select: none;
}

.proj-next:hover .proj-next-arrow {
  color: var(--gold);
  opacity: 1;
  transform: translateX(10px);
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 800px) {
  .proj-decision-block {
    grid-template-columns: 1fr;
  }
  .proj-decision-block:nth-child(even) .proj-decision-image,
  .proj-decision-block:nth-child(even) .proj-decision-text {
    order: unset;
  }
  .proj-validation-images {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .proj-stats { gap: var(--sp-8); }
  .proj-hero-title { font-size: clamp(2.25rem, 10vw, 3rem); }
}