/* =====================================================
   Brands Index — css/brands.css
   Listing page for all product_brand terms.
   Depends on: colorshop-design-tokens
   ===================================================== */

/* ---- Page header ---- */
.brands-header {
  padding: 88px 0 56px;
  border-bottom: 1px solid var(--hairline-2);
}

.brands-header .eyebrow {
  margin-bottom: 18px;
}

.brands-header h1 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(56px, 6vw, 96px);
  line-height: 0.92;
  letter-spacing: -0.025em;
}

.brands-header h1 em {
  font-style: italic;
  color: var(--ink-2);
}

.brands-header .brands-lede {
  margin: 24px 0 0;
  max-width: 52ch;
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink-2);
}

/* ---- Main content area ---- */
.brands-index {
  padding: 64px 0 88px;
}

/* ---- Alphabetical group divider ---- */
.brands-alpha-group {
  margin-bottom: 32px;
}

.brands-alpha-group + .brands-alpha-group {
  margin-top: 56px;
}

.brands-alpha-letter {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--hairline-2);
  margin-bottom: 20px;
}

/* ---- Brand grid ---- */
.brands-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

/* ---- Brand index card ---- */
.brand-index-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 24px;
  background: var(--paper);
  border: 1px solid var(--hairline);
  border-radius: 4px;
  text-decoration: none;
  color: var(--ink);
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.brand-index-card:hover {
  border-color: var(--ink-3);
  box-shadow: 0 4px 16px oklch(0.20 0.015 60 / 0.06);
  transform: translateY(-1px);
}

/* Card top row: avatar + name/count */
.brand-index-card__top {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* 48px round avatar with brand initial */
.brand-index-card .avatar {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 999px;
  background: var(--paper-2);
  border: 1px solid var(--hairline);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-size: 20px;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1;
}

.brand-index-card__meta {
  min-width: 0;
}

.brand-index-card .brand-name {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-index-card .count {
  display: block;
  margin-top: 4px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-3);
}

/* Season distribution mini-bar */
.brand-index-card .season-bar {
  display: flex;
  height: 6px;
  border-radius: 2px;
  overflow: hidden;
  background: var(--hairline-2);
}

.brand-index-card .season-bar__segment {
  flex: 0 0 auto;
  height: 100%;
}

.brand-index-card .season-bar__segment[data-season="spring"] { background: var(--spring-2); }
.brand-index-card .season-bar__segment[data-season="summer"] { background: var(--summer-2); }
.brand-index-card .season-bar__segment[data-season="autumn"] { background: var(--autumn-1); }
.brand-index-card .season-bar__segment[data-season="winter"] { background: var(--winter-1); }

/* Card footer: season labels row */
.brand-index-card__seasons {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.brand-season-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.brand-season-tag .dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  flex-shrink: 0;
}

.brand-season-tag[data-season="spring"] .dot { background: var(--spring-2); }
.brand-season-tag[data-season="summer"] .dot { background: var(--summer-2); }
.brand-season-tag[data-season="autumn"] .dot { background: var(--autumn-1); }
.brand-season-tag[data-season="winter"] .dot { background: var(--winter-1); }

/* ---- Arrow on card hover ---- */
.brand-index-card__arrow {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--hairline-2);
  display: flex;
  justify-content: flex-end;
  font-size: 15px;
  color: var(--ink-3);
  transition: color 160ms ease;
}

.brand-index-card:hover .brand-index-card__arrow {
  color: var(--ink);
}

/* ---- Empty state ---- */
.brands-empty {
  padding: 88px 0;
  text-align: center;
}

.brands-empty__title {
  font-family: var(--serif);
  font-size: 32px;
  margin: 0 0 12px;
  font-weight: 400;
}

.brands-empty__text {
  font-size: 16px;
  color: var(--ink-2);
  max-width: 40ch;
  margin: 0 auto;
  line-height: 1.55;
}

/* ============================
   RESPONSIVE
   ============================ */

@media (max-width: 1024px) {
  .brands-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .brands-header {
    padding: 64px 0 40px;
  }
}

@media (max-width: 640px) {
  .brands-grid {
    grid-template-columns: 1fr;
  }

  .brands-header {
    padding: 48px 0 32px;
  }

  .brands-header h1 {
    font-size: clamp(48px, 12vw, 72px);
  }

  .brands-index {
    padding: 40px 0 64px;
  }

  .brands-alpha-group + .brands-alpha-group {
    margin-top: 40px;
  }
}