/* Edge — 21st dhileepkumargm/habit-faq-scroller adapted into #edge semantics
   UI: title+lead + 3 horizontal looping card rows (left/right/left). No CTA. */

[data-section="edge"] {
  display: block;
  overflow: clip;
  max-width: none;
  width: 100%;
  padding-inline: 0;
}

[data-edge-head] {
  max-width: var(--content-max);
  margin-inline: auto;
  margin-bottom: var(--space-6);
  padding-inline: var(--gutter);
}

[data-edge-head] h2 {
  margin-bottom: var(--space-4);
}

[data-edge-head] [data-role="lead"] {
  margin: 0;
  max-width: var(--content-narrow);
}

[data-edge-scroller] {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  width: 100%;
  padding-block: var(--space-2);
}

[data-edge-row] {
  overflow: hidden;
  mask-image: linear-gradient(
    to right,
    transparent,
    #000 6%,
    #000 94%,
    transparent
  );
  -webkit-mask-image: linear-gradient(
    to right,
    transparent,
    #000 6%,
    #000 94%,
    transparent
  );
}

[data-edge-track] {
  display: flex;
  width: max-content;
  gap: var(--space-4);
  will-change: transform;
}

[data-edge-row][data-direction="left"] [data-edge-track] {
  animation: edge-marquee-left var(--edge-speed, 55s) linear infinite;
}

[data-edge-row][data-direction="right"] [data-edge-track] {
  animation: edge-marquee-right var(--edge-speed, 42s) linear infinite;
}

[data-edge-row]:hover [data-edge-track],
[data-edge-row]:focus-within [data-edge-track] {
  animation-play-state: paused;
}

/* Cards — template UI, NLMedia charcoal tokens */
[data-section="edge"] [data-edge] {
  flex: 0 0 min(22rem, 78vw);
  width: min(22rem, 78vw);
  margin: 0;
  padding: var(--space-5);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 1rem;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.28);
}

[data-section="edge"] [data-edge] h3 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--fg);
}

[data-section="edge"] [data-edge] p {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  line-height: 1.55;
  color: var(--muted);
}

@keyframes edge-marquee-left {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(-50%, 0, 0);
  }
}

@keyframes edge-marquee-right {
  from {
    transform: translate3d(-50%, 0, 0);
  }
  to {
    transform: translate3d(0, 0, 0);
  }
}

@media (min-width: 900px) {
  [data-edge-scroller] {
    gap: var(--space-5);
  }

  [data-section="edge"] [data-edge] {
    flex-basis: 26rem;
    width: 26rem;
    padding: var(--space-6);
  }

  [data-section="edge"] [data-edge] h3 {
    font-size: var(--text-lg);
  }

  [data-edge-row] {
    mask-image: linear-gradient(
      to right,
      transparent,
      #000 8%,
      #000 92%,
      transparent
    );
    -webkit-mask-image: linear-gradient(
      to right,
      transparent,
      #000 8%,
      #000 92%,
      transparent
    );
  }
}

@media (prefers-reduced-motion: reduce) {
  [data-edge-scroller] {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
    max-width: var(--content-max);
    margin-inline: auto;
    padding-inline: var(--gutter);
  }

  [data-edge-row]:nth-child(3) {
    display: none;
  }

  [data-edge-row] {
    display: contents;
    mask-image: none;
    -webkit-mask-image: none;
    overflow: visible;
  }

  [data-edge-track] {
    display: contents;
    animation: none !important;
  }

  [data-section="edge"] [data-edge][aria-hidden="true"] {
    display: none;
  }

  [data-section="edge"] [data-edge] {
    width: auto;
    flex: none;
  }

  @media (min-width: 720px) {
    [data-edge-scroller] {
      grid-template-columns: 1fr 1fr;
    }
  }
}