/* Kinetic — Features Intro ACM block (self-contained, block-scoped).
   All color/type/spacing route through the template design tokens, so light +
   dark + the 3 directions resolve automatically with the active
   [data-style]/[data-theme] / html.t4-dark.

   The lighter, intro-level feature grid: borderless icon-led cards. Visually
   DISTINCT from features-ledger (numbered spec rows / bordered stat cards). */

.acm-features-intro {
  font-family: "IBM Plex Sans", sans-serif;
  color: var(--text);
}
.acm-features-intro .hx-section {
  padding: 80px 0;
}
.acm-features-intro .hx-container {
  max-width: 1240px;
  margin: 0 auto;
  padding-left: 32px;
  padding-right: 32px;
}

/* ---- head ---- */
.acm-features-intro .hx-fi-head {
  max-width: 720px;
  margin-bottom: 44px;
}
.acm-features-intro .hx-eyebrow {
  margin: 0 0 14px;
  font-family: "JetBrains Mono", monospace;
  font-size: 12.5px;
  font-weight: 400;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary);
}
.acm-features-intro .hx-h2 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 38px;
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -1px;
  color: var(--heading);
}
.acm-features-intro .hx-fi-sub {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.55;
  color: var(--text);
}

/* ---- grid ---- */
.acm-features-intro .hx-fi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ---- intro card (borderless / lighter register) ---- */
/* Canonical CARD gesture (micro-interactions.md §3a): neutral (invisible)
   border at rest, lift + primary border + shadow on hover. Padding/margin
   cancel out so the rest-state box model is unchanged (no layout shift vs.
   pages without this hover) — the border/shadow just wraps the existing
   content on hover. Page overlays (page-218/page-225) that add their own
   surface+border card treatment simply override these same properties. */
.acm-features-intro .hx-feat {
  display: flex;
  flex-direction: column;
  padding: 10px 12px;
  margin: -10px -12px;
  border: 1px solid transparent;
  border-radius: 12px;
  transition: border-color .15s ease, transform .2s ease, box-shadow .2s ease;
}
.acm-features-intro .hx-feat:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px -12px color-mix(in srgb, var(--primary) 40%, transparent);
}
.acm-features-intro .hx-feat-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 11px;
  background: var(--elevated);
  border: 1px solid var(--border);
  color: var(--primary);
  margin-bottom: 20px;
  transition: transform .2s ease;
}
.acm-features-intro .hx-feat:hover .hx-feat-icon {
  transform: scale(1.06);
}
.acm-features-intro .hx-feat-icon svg {
  width: 22px;
  height: 22px;
}
.acm-features-intro .hx-feat-title {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.3px;
  color: var(--heading);
}
.acm-features-intro .hx-feat-text {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
}
.acm-features-intro .hx-feat-stat {
  align-self: flex-start;
  margin-top: 16px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--primary);
}

/* ---- responsive — 4/3-up to 2-up on tablet, single col on phone ---- */
@media (max-width: 880px) {
  .acm-features-intro .hx-fi-grid {
    grid-template-columns: 1fr 1fr !important;
  }
}
@media (max-width: 620px) {
  .acm-features-intro .hx-section {
    padding: 56px 0;
  }
  .acm-features-intro .hx-container {
    padding-left: 20px;
    padding-right: 20px;
  }
  .acm-features-intro .hx-h2 {
    font-size: 30px;
  }
  .acm-features-intro .hx-fi-grid {
    grid-template-columns: 1fr !important;
  }
}

/* ---- reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  .acm-features-intro * {
    transition-duration: .01ms !important;
  }
  .acm-features-intro .hx-feat:hover {
    transform: none;
  }
}