/* ==========================================================================
   Layout components shared across marketing pages
   ========================================================================== */

/* ---- Category rail ---- */
.category-rail {
  display: flex;
  gap: var(--space-4);
  overflow-x: auto;
  padding-bottom: var(--space-2);
  scrollbar-width: thin;
}
.category-chip {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4);
  min-width: 168px;
  border: 1px solid var(--line-on-paper);
  border-radius: var(--radius-md);
  transition: border-color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.category-chip:hover { border-color: var(--ink); transform: translateY(-3px); }
.category-chip__icon {
  width: 34px; height: 34px;
  color: var(--amber);
}
.category-chip__name { font-weight: 600; font-size: var(--fs-sm); }
.category-chip__count { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--text-on-paper-mute); }

/* ---- Feature grid ("Why VishalLab.dev") ---- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}
@media (max-width: 980px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .feature-grid { grid-template-columns: 1fr; } }

.feature-card {
  padding: var(--space-6) var(--space-5);
  border: 1px solid var(--line-on-paper);
  border-radius: var(--radius-md);
  background: var(--paper);
}
.feature-card__icon {
  width: 40px; height: 40px;
  color: var(--ink);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
}
.feature-card__icon svg { width: 22px; height: 22px; }
.feature-card__title { font-size: var(--fs-md); margin-bottom: var(--space-2); }
.feature-card__desc { color: var(--text-on-paper-mute); font-size: var(--fs-sm); }

/* ---- Process steps (real sequence: browse -> get files -> make) ---- */
.process-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  counter-reset: step;
}
@media (max-width: 780px) { .process-steps { grid-template-columns: 1fr; } }

.process-step {
  position: relative;
  padding-top: var(--space-6);
  border-top: 2px solid var(--ink);
}
.process-step__index {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--amber);
  display: block;
  margin-bottom: var(--space-3);
}
.process-step__title { font-size: var(--fs-lg); margin-bottom: var(--space-2); }
.process-step__desc { color: var(--text-on-paper-mute); }

/* ---- CTA banner (Custom CAD) ---- */
.cta-banner {
  background: var(--ink);
  color: var(--text-on-ink);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  display: grid;
  grid-template-columns: 1.3fr auto;
  align-items: center;
  gap: var(--space-6);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--line-on-ink) 1px, transparent 1px), linear-gradient(90deg, var(--line-on-ink) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(ellipse 70% 100% at 100% 50%, black 20%, transparent 80%);
}
.cta-banner__title { font-size: var(--fs-2xl); position: relative; max-width: 18ch; }
.cta-banner__desc { color: var(--text-on-ink-mute); margin-top: var(--space-3); max-width: 48ch; position: relative; }
.cta-banner__action { position: relative; }

@media (max-width: 780px) {
  .cta-banner { grid-template-columns: 1fr; text-align: left; padding: var(--space-6); }
}

/* ---- Page header (used on models.html, about.html, contact.html etc.) ---- */
.page-header {
  padding-top: calc(var(--nav-height) + var(--space-7));
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--line-on-paper);
}
.page-header__title { font-size: var(--fs-3xl); margin-top: var(--space-3); }
.page-header__desc { color: var(--text-on-paper-mute); max-width: 60ch; margin-top: var(--space-3); }

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-on-paper-mute);
  flex-wrap: wrap;
}
.breadcrumbs a:hover { color: var(--ink); text-decoration: underline; }
.breadcrumbs .sep { opacity: 0.5; }

/* ---- Two column content blocks (about page) ---- */
.split-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: center;
}
@media (max-width: 860px) {
  .split-block { grid-template-columns: 1fr; }
}
.split-block__figure {
  border: 1px solid var(--line-on-paper);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  background: var(--paper-2);
}

/* ---- Stat row ---- */
.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line-on-paper);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.stat-cell {
  padding: var(--space-5);
  border-right: 1px solid var(--line-on-paper);
}
.stat-cell:last-child { border-right: none; }
.stat-cell__value { font-family: var(--font-mono); font-size: var(--fs-xl); }
.stat-cell__label { font-size: var(--fs-xs); color: var(--text-on-paper-mute); margin-top: 4px; }
@media (max-width: 720px) {
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .stat-cell:nth-child(2) { border-right: none; }
  .stat-cell:nth-child(3), .stat-cell:nth-child(4) { border-top: 1px solid var(--line-on-paper); }
}