/* ==========================================================================
   card.css — card system
   --------------------------------------------------------------------------
   Milestone 5 · Card System

   Spec: Phase 1 §11 (Cards) · Phase 5 §6 (Card System) / §6.1 (Card Entries).

   Shared shell (Phase 1 §11 / Phase 5 §6): radius-md, 1px border,
   shadow-hairline, background fill, padding space-24 (space-16 mobile),
   child gap space-16.

   Types: service · industry · product · project · feature · stat · contact
   · info. Interactive cards hover to 1px primary border + shadow-raised +
   2px lift and use a stretched link so the whole card is a single
   keyboard-focusable link.

   Forced-state classes (.is-hover / .is-focus) mirror the real states so
   pages/components.html can preview them statically — showcase-only.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Base shell
   -------------------------------------------------------------------------- */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-16);
  padding: var(--space-16);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-hairline);
  transition:
    border-color var(--transition-standard),
    box-shadow var(--transition-standard),
    transform var(--transition-standard),
    background-color var(--transition-standard);
}

@media (min-width: 768px) {
  .card {
    padding: var(--space-24);
  }

  /* Product cards keep the tighter 16px padding (Phase 1 §11) */
  .card--product {
    padding: var(--space-16);
  }
}

/* --------------------------------------------------------------------------
   Shared elements
   -------------------------------------------------------------------------- */
.card__title {
  margin: 0;
  color: var(--color-secondary);
}

.card__desc {
  margin: 0;
  color: var(--color-body);
  font-size: var(--text-small-current);
  line-height: var(--lh-small);
}

/* Clamp small descriptions to ≤3 lines (Phase 1 §11 Service card) */
.card__desc--clamp {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  overflow: hidden;
}

.card__body {
  margin: 0;
  color: var(--color-body);
  font-size: var(--text-body-current);
  line-height: var(--lh-body);
}

.card__footer {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  margin-block-start: auto;
}

/* --------------------------------------------------------------------------
   Icons
   -------------------------------------------------------------------------- */
.card__icon {
  display: inline-grid;
  place-items: center;
  flex-shrink: 0;
  color: var(--color-body);
  border-radius: var(--radius-sm);
}

.card__icon--48 {
  width: 48px;
  height: 48px;
  background: var(--color-surface);
}

.card__icon--32 {
  width: 32px;
  height: 32px;
  color: var(--color-primary);
}

.card__icon--24 {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
}

.card__icon-glyph {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* --------------------------------------------------------------------------
   Media / images
   -------------------------------------------------------------------------- */
.card__media {
  overflow: hidden;
  border-radius: var(--radius-sm);
}

.card__media--16-9 {
  aspect-ratio: 16 / 9;
}

.card__media--1-1 {
  aspect-ratio: 1 / 1;
}

.card__media-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-image);
}

/* --------------------------------------------------------------------------
   Carousel (R11-carousel · R11-expand) — the shared, single carousel
   implementation used by product cards, the products rail and service
   figures. Markup contract: [data-carousel] wraps a viewport with
   [data-carousel-viewport] → [data-carousel-track] → slides, plus a
   [data-carousel-nav] row of prev/next buttons and dots. Behaviour in
   main.js initCarousels(); no autoplay — the visitor drives it.
   -------------------------------------------------------------------------- */
.card__carousel {
  display: flex;
  flex-direction: column;
}

.card__carousel-viewport {
  overflow: hidden;
  touch-action: pan-y;
}

.card__carousel-track {
  display: flex;
  height: 100%;
  transition: transform var(--transition-standard);
}

.card__carousel-track.is-dragging {
  transition: none;
}

.card__carousel-slide {
  flex: 0 0 100%;
  min-width: 0;
  height: 100%;
  margin: 0;
}

.card__carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  user-select: none;
  -webkit-user-drag: none;
}

.card__carousel-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  margin-block-start: var(--space-8);
}

.card__carousel-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  color: var(--color-body);
  font-size: var(--text-body-current);
  line-height: 1;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition:
    color var(--transition-standard),
    border-color var(--transition-standard);
}

.card__carousel-btn:hover,
.card__carousel-btn:focus-visible {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.card__carousel-dots {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.card__carousel-dot {
  width: 8px;
  height: 8px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition:
    background-color var(--transition-standard),
    border-color var(--transition-standard);
}

.card__carousel-dot:hover,
.card__carousel-dot:focus-visible {
  border-color: var(--color-primary);
}

.card__carousel-dot.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

@media (prefers-reduced-motion: reduce) {
  .card__carousel-track {
    transition: none;
  }
}

/* --------------------------------------------------------------------------
   Badges / tags (project tag row, product "featured" badge)
   -------------------------------------------------------------------------- */
.card__badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
  margin: 0;
  padding: 0;
  list-style: none;
}

.card__badge {
  display: inline-flex;
  align-items: center;
  min-height: var(--space-24);
  padding: var(--space-4) var(--space-8);
  background: var(--color-surface);
  color: var(--color-heading);
  font-size: var(--text-label-current);
  font-weight: var(--weight-semibold);
  line-height: var(--lh-label);
  border-radius: var(--radius-full);
}

/* --------------------------------------------------------------------------
   Interactive card states — hover, focus, stretched link
   -------------------------------------------------------------------------- */
.card--service:hover,
.card--service.is-hover,
.card--industry:hover,
.card--industry.is-hover,
.card--product:hover,
.card--product.is-hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-raised);
  transform: translateY(-2px);
}

/* Focus ring wraps the whole card when its stretched link receives keyboard
   focus (Phase 1 §17.1) */
.card:has(.card__link:focus-visible),
.card:has(.card__title-link:focus-visible),
.card.is-focus {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

/* Stretched link — the whole card becomes one clickable, focusable link */
.card__link::after,
.card__title-link::after {
  content: "";
  position: absolute;
  inset: 0;
}

.card__link {
  color: var(--color-primary);
  text-decoration: none;
}

.card__title-link {
  color: var(--color-secondary);
  text-decoration: none;
}

.card__title-link:hover,
.card__title-link:focus-visible {
  color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   Service card — 48px icon block, H4, small body ≤3 lines, "Learn more"
   -------------------------------------------------------------------------- */
.card--service:hover .card__icon,
.card--service.is-hover .card__icon {
  color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   Industry card — icon or 16:9 image, H5, arrow. Image zoom 1.02 on hover.
   -------------------------------------------------------------------------- */
.card__arrow {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  color: var(--color-body);
}

.card--industry:hover .card__arrow,
.card--industry.is-hover .card__arrow,
.card--industry:hover .card__icon,
.card--industry.is-hover .card__icon {
  color: var(--color-primary);
}

.card--industry:hover .card__media-image,
.card--industry.is-hover .card__media-image {
  transform: scale(1.02);
}

/* --------------------------------------------------------------------------
   Product card — 1:1 image, H5, mono spec line, compact button
   -------------------------------------------------------------------------- */
.card__spec {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-micro);
  line-height: var(--lh-small);
  color: var(--color-body);
}

/* --------------------------------------------------------------------------
   Feature card — informational, no hover
   -------------------------------------------------------------------------- */
.card--feature--bordered {
  border-color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   Statistic card — mono number 40px, small label. No hover.
   -------------------------------------------------------------------------- */
.card__stat {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-stat-current);
  line-height: var(--lh-h1);
  color: var(--color-primary);
}

.card__label {
  margin: 0;
  font-size: var(--text-small-current);
  line-height: var(--lh-small);
  color: var(--color-body);
}

.card--stat--brand-yellow {
  background: var(--color-brand-yellow);
  border-color: var(--color-brand-yellow);
  box-shadow: none;
}

.card--stat--brand-yellow .card__label {
  color: var(--color-heading);
}

/* --------------------------------------------------------------------------
   Contact card — icon 24, title, contact line(s). Surface fill on hover.
   -------------------------------------------------------------------------- */
.card--contact {
  gap: var(--space-8);
}

.card__heading {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.card--contact:hover,
.card--contact.is-hover {
  background: var(--color-surface);
}

.card__contact-line {
  margin: 0;
  font-size: var(--text-small-current);
  line-height: var(--lh-small);
  color: var(--color-body);
}

.card__contact-link {
  color: var(--color-primary);
  text-decoration: none;
}

.card__contact-link:hover,
.card__contact-link:focus-visible {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 6px;
}

.card__contact-link--mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* --------------------------------------------------------------------------
   Information card — title, body, optional link. No hover.
   -------------------------------------------------------------------------- */
.card--info--inverse {
  background: var(--color-heading);
  border-color: color-mix(in srgb, var(--color-white) 20%, transparent);
}

.card--info--inverse .card__title {
  color: var(--color-white);
}

.card--info--inverse .card__body {
  color: color-mix(in srgb, var(--color-white) 85%, transparent);
}

.card__info-link {
  color: var(--color-primary);
  font-size: var(--text-button-current);
  font-weight: var(--weight-semibold);
  text-decoration: none;
}

.card__info-link:hover,
.card__info-link:focus-visible {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 6px;
}

.card--info--inverse .card__info-link {
  color: var(--color-brand-yellow);
}

/* --------------------------------------------------------------------------
   Reduced motion — hover lift and image zoom disabled (Phase 5 §6.1)
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .card--service:hover,
  .card--service.is-hover,
  .card--industry:hover,
  .card--industry.is-hover,
  .card--product:hover,
  .card--product.is-hover {
    transform: none;
  }

  .card--industry:hover .card__media-image,
  .card--industry.is-hover .card__media-image {
    transform: none;
  }
}