/* ============================================================
   MEMTEST INDUSTRIAL — Components
   ============================================================ */

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75em;
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 1.05em 1.8em;
  border: 1px solid var(--ink-line);
  background: var(--ink-raised);
  color: var(--paper);
  position: relative;
  overflow: hidden;
  transition: color var(--t-fast) var(--ease-out), border-color var(--t-fast) var(--ease-out);
}
.btn::before {
  content: "";
  position: absolute; inset: 0;
  background: var(--copper);
  transform: translateY(101%);
  transition: transform var(--t-med) var(--ease-out);
  z-index: 0;
}
.btn > * { position: relative; z-index: 1; }
.btn:hover { color: var(--ink-void); border-color: var(--copper); }
.btn:hover::before { transform: translateY(0); }

.btn--primary { background: var(--copper); color: var(--ink-void); border-color: var(--copper); }
.btn--primary::before { background: var(--copper-bright); }
.btn--primary:hover { color: var(--ink-void); }

.btn--ghost { background: transparent; border-color: var(--ink-line); }
.btn--ghost::before { background: var(--paper); }
.btn--ghost:hover { color: var(--ink-void); border-color: var(--paper); }

.btn--lg { padding: 1.25em 2.4em; font-size: var(--fs-body); }

/* ---------- Tag / Chip ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.4em 0.8em;
  border: 1px solid var(--ink-line);
  color: var(--paper-dim);
  background: rgba(20,21,24,0.6);
  backdrop-filter: blur(4px);
}
.chip--copper { color: var(--copper); border-color: var(--copper-deep); background: var(--copper-glow); }
.chip--dot::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--signal-ok);
  box-shadow: 0 0 8px var(--signal-ok);
}

/* ---------- Spec table ---------- */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: var(--fs-small);
}
.spec-table tr { border-bottom: 1px solid var(--ink-line-soft); }
.spec-table td { padding: 0.9em 0; vertical-align: top; }
.spec-table td:first-child {
  color: var(--paper-faint);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: var(--fs-micro);
  width: 38%;
}
.spec-table td:last-child { color: var(--paper); }
.spec-table .spec-val-accent { color: var(--copper-bright); }

/* ---------- Product card ---------- */
.product-card {
  position: relative;
  background: var(--ink-raised);
  border: 1px solid var(--ink-line-soft);
  display: flex;
  flex-direction: column;
  transition: border-color var(--t-med) var(--ease-out), transform var(--t-med) var(--ease-out);
  overflow: hidden;
}
.product-card:hover {
  border-color: var(--copper-deep);
  transform: translateY(-4px);
}
.product-card__media {
  aspect-ratio: 4 / 3;
  background: var(--ink-panel);
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--ink-line-soft);
}
.product-card__media img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform var(--t-slow) var(--ease-out), filter var(--t-med) var(--ease-out);
  filter: saturate(0.85) contrast(1.05);
}
.product-card:hover .product-card__media img { transform: scale(1.06); filter: saturate(1) contrast(1.05); }
.product-card__sku {
  position: absolute;
  top: 1rem; left: 1rem;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.15em;
  color: var(--paper);
  background: rgba(8,9,10,0.75);
  backdrop-filter: blur(6px);
  padding: 0.4em 0.7em;
  border: 1px solid var(--ink-line);
}
.product-card__body {
  padding: 1.5rem 1.5rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  flex: 1;
}
.product-card__title {
  font-family: var(--font-display);
  font-size: 1.55rem;
  line-height: 1.05;
  color: var(--paper);
}
.product-card__title em { font-style: italic; color: var(--copper-bright); }
.product-card__desc { font-size: var(--fs-small); color: var(--paper-dim); line-height: 1.5; }
.product-card__meta {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px dashed var(--ink-line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--paper-faint);
}
.product-card__meta b { color: var(--paper); font-weight: 400; }

/* ---------- Knowledge article card ---------- */
.article-card {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 1.5rem;
  padding: 1.75rem 0;
  border-top: 1px solid var(--ink-line);
  transition: padding var(--t-med) var(--ease-out);
  cursor: pointer;
}
.article-card:hover { padding-left: 1rem; }
.article-card__num {
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  color: var(--copper);
  letter-spacing: 0.1em;
  padding-top: 0.3em;
}
.article-card__title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  line-height: 1.1;
  color: var(--paper);
  margin-bottom: 0.5rem;
  transition: color var(--t-fast) var(--ease-out);
}
.article-card:hover .article-card__title { color: var(--copper-bright); }
.article-card__excerpt { color: var(--paper-dim); font-size: var(--fs-small); max-width: 60ch; }
.article-card__meta {
  margin-top: 0.85rem;
  display: flex;
  gap: 1.5rem;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--paper-faint);
}
@media (max-width: 640px) {
  .article-card { grid-template-columns: 1fr; gap: 0.5rem; }
  .article-card__title { font-size: 1.25rem; }
}

/* ---------- Video card ---------- */
.video-card {
  position: relative;
  background: var(--ink-raised);
  border: 1px solid var(--ink-line-soft);
  overflow: hidden;
  cursor: pointer;
  transition: border-color var(--t-med) var(--ease-out);
}
.video-card:hover { border-color: var(--copper-deep); }
.video-card__media {
  aspect-ratio: 16 / 9;
  position: relative;
  overflow: hidden;
  background: var(--ink-panel);
}
.video-card__media img {
  width: 100%; height: 100%; object-fit: cover;
  filter: saturate(0.7) brightness(0.85);
  transition: transform var(--t-slow) var(--ease-out), filter var(--t-med) var(--ease-out);
}
.video-card:hover .video-card__media img { transform: scale(1.05); filter: saturate(0.9) brightness(0.95); }
.video-card__play {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 64px; height: 64px;
  border: 1px solid var(--paper);
  border-radius: 50%;
  display: grid; place-items: center;
  background: rgba(8,9,10,0.4);
  backdrop-filter: blur(6px);
  transition: background var(--t-med) var(--ease-out), transform var(--t-med) var(--ease-out), border-color var(--t-med) var(--ease-out);
}
.video-card__play svg { width: 18px; height: 18px; fill: var(--paper); margin-left: 2px; }
.video-card:hover .video-card__play { background: var(--copper); border-color: var(--copper); transform: translate(-50%, -50%) scale(1.08); }
.video-card:hover .video-card__play svg { fill: var(--ink-void); }
.video-card__duration {
  position: absolute;
  bottom: 1rem; right: 1rem;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.1em;
  background: rgba(8,9,10,0.8);
  backdrop-filter: blur(4px);
  padding: 0.3em 0.6em;
  color: var(--paper);
}
.video-card__body { padding: 1.25rem 1.5rem 1.5rem; }
.video-card__title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  line-height: 1.15;
  color: var(--paper);
  margin-bottom: 0.5rem;
}
.video-card__meta {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--paper-faint);
  display: flex; gap: 1rem;
}

/* ---------- Stat block ---------- */
.stat {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.stat__num {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 4.5vw, 4rem);
  line-height: 0.95;
  color: var(--copper-bright);
  font-feature-settings: "lnum", "tnum";
}
.stat__num sup { font-size: 0.4em; vertical-align: top; color: var(--paper-dim); margin-left: 0.1em; }
.stat__label {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--paper-faint);
}

/* ---------- Filter pills ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-bottom: 1rem;
}
.filter-pill {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.65em 1.1em;
  border: 1px solid var(--ink-line);
  color: var(--paper-dim);
  background: transparent;
  transition: all var(--t-fast) var(--ease-out);
}
.filter-pill:hover { color: var(--paper); border-color: var(--paper-faint); }
.filter-pill.is-active {
  background: var(--paper);
  color: var(--ink-void);
  border-color: var(--paper);
}

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8,9,10,0.92);
  backdrop-filter: blur(10px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 5vh 5vw;
}
.modal-overlay.is-open { display: flex; }
.modal-overlay__close {
  position: absolute;
  top: 2rem; right: 2rem;
  width: 48px; height: 48px;
  border: 1px solid var(--ink-line);
  display: grid; place-items: center;
  color: var(--paper);
  transition: all var(--t-fast) var(--ease-out);
}
.modal-overlay__close:hover { border-color: var(--copper); color: var(--copper); }
.modal-overlay__close svg { width: 18px; height: 18px; }
.modal-overlay iframe,
.modal-overlay video {
  max-width: 1100px;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--ink-line);
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  padding-block: 1rem 0;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--paper-faint);
  opacity: 0.75;
}
.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  list-style: none;
  padding: 0;
  margin: 0;
}
.breadcrumb__item {
  display: flex;
  align-items: center;
}
.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  display: inline-block;
  margin: 0 0.65em;
  color: var(--paper-faint);
  opacity: 0.35;
}
.breadcrumb__link {
  color: var(--paper-faint);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease-out);
}
.breadcrumb__link:hover {
  color: var(--copper);
}
.breadcrumb__current {
  color: var(--paper-dim);
}