/* ─── Collection nav ─────────────────────────────── */
.collection-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 1.25rem 2rem;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 10;
}

.collection-nav__brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--fg);
  letter-spacing: 0.08em;
  text-decoration: none;
  white-space: nowrap;
}

.collection-nav__prototypes {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.collection-nav__prototypes::-webkit-scrollbar {
  display: none;
}

.collection-nav__link {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--fg-muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s;
  letter-spacing: 0.03em;
}

.collection-nav__link:hover {
  color: var(--fg);
}

/* ─── Hero ─────────────────────────────────────────── */
.collection-hero {
  padding: var(--space-2xl) var(--space-md);
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.collection-hero__inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.collection-hero__eyebrow {
  display: block;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-md);
}

.collection-hero__title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: var(--space-md);
}

.collection-hero__title em {
  font-style: italic;
  color: var(--accent);
}

.collection-hero__sub {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 46ch;
}

/* ─── Grid ─────────────────────────────────────────── */
.collection-grid {
  padding: var(--space-xl) var(--space-md);
  background: var(--white);
}

.collection-grid__inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.collection-grid__header {
  margin-bottom: var(--space-lg);
}

.collection-grid__label {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.collection-grid__list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.collection-item {
  display: flex;
  flex-direction: column;
  background: var(--white);
  text-decoration: none;
  transition: opacity 0.2s;
}

.collection-item:hover {
  opacity: 0.85;
}

.collection-item__image-wrap {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--bg);
}

.collection-item__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.collection-item:hover .collection-item__img {
  transform: scale(1.03);
}

.collection-item__meta {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.collection-item__num {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.collection-item__name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--fg);
  letter-spacing: 0.04em;
}

/* ─── Collection closing ────────────────────────────── */
.collection-closing {
  padding: var(--space-xl) var(--space-md);
  background: var(--bg-alt);
  text-align: center;
  border-top: 1px solid var(--border);
}

.collection-closing__inner {
  max-width: 600px;
  margin: 0 auto;
}

.collection-closing__note {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-style: italic;
  font-weight: 300;
  color: var(--fg);
  margin-bottom: var(--space-md);
  line-height: 1.3;
}

/* ─── Responsive ───────────────────────────────────── */
@media (max-width: 900px) {
  .collection-grid__list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .collection-nav {
    gap: 1rem;
    padding: 1rem;
    overflow-x: auto;
  }

  .collection-grid__list {
    grid-template-columns: 1fr;
  }
}