/* ============================================================
   MEMTEST INDUSTRIAL — Catalog / Products page
   ============================================================ */

/* ---- Page header (sub-hero) ---- */
.page-hero {
  padding-top: 12rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--ink-line);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 50% 80% at 80% 0%, var(--copper-glow) 0%, transparent 60%);
  pointer-events: none;
}
.page-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
}
.page-hero__title {
  font-size: var(--fs-mega);
  line-height: 0.92;
  letter-spacing: -0.025em;
  max-width: 14ch;
}
.page-hero__title em { font-style: italic; color: var(--copper-bright); }
.page-hero__title .stroke { -webkit-text-stroke: 1px var(--paper); color: transparent; }
.page-hero__meta {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  letter-spacing: 0.1em;
  color: var(--paper-faint);
}
.page-hero__meta dl { display: grid; grid-template-columns: auto 1fr; gap: 0.6rem 1.5rem; }
.page-hero__meta dt { color: var(--paper-faint); text-transform: uppercase; font-size: var(--fs-micro); letter-spacing: 0.14em; }
.page-hero__meta dd { color: var(--paper); }

@media (max-width: 880px) {
  .page-hero { padding-top: 9rem; }
  .page-hero__inner { grid-template-columns: 1fr; gap: 2rem; }
}

/* ---- Filter / toolbar ---- */
.catalog-toolbar {
  padding-block: 2rem 1rem;
  border-bottom: 1px solid var(--ink-line);
  position: sticky;
  top: 64px;
  z-index: 50;
  background: rgba(13,14,16,0.92);
  backdrop-filter: blur(12px);
}
@media (max-width: 880px) {
  .catalog-toolbar { top: 56px; }
}
.catalog-toolbar__row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.catalog-toolbar__filters {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}
.filter-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.filter-group__label {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper-faint);
  min-width: 90px;
}
.catalog-toolbar__count {
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  letter-spacing: 0.1em;
  color: var(--paper-dim);
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.catalog-toolbar__count b { color: var(--copper); font-weight: 400; font-size: 1.4rem; font-family: var(--font-display); }

/* ---- Product grid ---- */
.catalog {
  padding-block: clamp(3rem, 5vw, 4rem) var(--pad-section);
}
.catalog__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.product-card.is-hidden { display: none; }
@media (max-width: 1100px) { .catalog__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .catalog__grid { grid-template-columns: 1fr; } }

/* ---- Series separator ---- */
.series-band {
  padding-block: clamp(3rem, 5vw, 4rem);
  border-top: 1px solid var(--ink-line);
  background: var(--ink-void);
}
.series-band__head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 2rem;
  align-items: end;
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--ink-line);
}
.series-band__num {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 5rem);
  line-height: 1;
  color: var(--copper);
  font-feature-settings: "lnum", "tnum";
}
.series-band__title { font-size: var(--fs-h2); max-width: 18ch; }
.series-band__title em { font-style: italic; color: var(--copper-bright); }
.series-band__desc { color: var(--paper-dim); max-width: 48ch; font-size: var(--fs-small); }
@media (max-width: 880px) {
  .series-band__head { grid-template-columns: 1fr; gap: 1rem; }
}

/* ---- Empty state ---- */
.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--paper-faint);
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  display: none;
}
.empty-state.is-visible { display: block; }
.empty-state b { color: var(--copper); font-weight: 400; }