/* ==========================================================================
   Expertise Preview — narrative intro + data-driven service card grid
   ========================================================================== */

.expertise {
  background: var(--color-navy-900);
  border-top: 1px solid var(--border-subtle);
}

.expertise__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs) var(--space-lg);
  margin-top: var(--space-lg);
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.expertise__stats strong {
  color: var(--accent);
  font-weight: 600;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.service-card {
  position: relative;
  background: var(--color-navy-900);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  transition: background var(--dur-med) var(--ease-out);
}

.service-card:hover {
  background: var(--color-navy-800);
}

.service-card__icon {
  width: 40px;
  height: 40px;
  color: var(--accent);
}

.service-card__icon img {
  width: 100%;
  height: 100%;
}

.service-card__title {
  font-size: 1.15rem;
  font-weight: 700;
}

.service-card__desc {
  font-size: var(--text-small);
  color: var(--text-muted);
  line-height: var(--leading-normal);
}

.service-card__index {
  position: absolute;
  top: var(--space-md);
  right: var(--space-lg);
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  color: rgba(var(--ghost-rgb), 0.25);
}

.expertise__footer {
  margin-top: var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

@media (max-width: 900px) {
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 620px) {
  .service-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Core Service Cards (Expertise page "What We Do") — distinct from the
   homepage's .service-card preview above (kept as-is on purpose). Hover
   lift/border-glow borrowed from .project-card; the grid-template-rows
   0fr→1fr expand-on-hover technique borrowed from .market-card, including
   its touch/tap-toggle + focus-within + reduced-motion fallbacks.
   ========================================================================== */
.core-services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.core-service-card {
  position: relative;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--color-navy-900);
  overflow: hidden;
  transition: border-color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out);
}

.core-service-card:hover,
.core-service-card:focus-within,
.core-service-card.is-expanded {
  border-color: var(--border-accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

/* ---- Collapsed-state image strip — same shallow-strip treatment as
   .market-card__image-wrap (markets.css): collapses shut via the
   grid-template-rows 0fr↔1fr technique on the same hover/focus/tap
   triggers that expand the capabilities panel, so opening a card reads as
   one continuous motion. ---- */
.core-service-card__image-wrap {
  display: grid;
  grid-template-rows: 1fr;
  transition: grid-template-rows var(--dur-med) var(--ease-out);
}

.core-service-card__image-inner {
  position: relative;
  overflow: hidden;
  min-height: 0;
}

.core-service-card__image {
  display: block;
  width: 100%;
  height: 120px;
  object-fit: cover;
  filter: saturate(0.8) brightness(0.85);
}

/* Data Center Security Consulting photo: the box is proportionally wider
   than the source photo, so object-fit:cover already shows its full width
   and only crops top/bottom — a plain object-position shift can't move the
   server racks into view. Scaling from a left-weighted origin instead zooms
   past the centered door panel and favors the lit racks on the left. */
#service-data-center-consulting .core-service-card__image {
  transform: scale(1.3);
  transform-origin: 18% center;
}

.core-service-card__image-inner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 15, 34, 0.1) 0%, rgba(6, 15, 34, 0.65) 100%);
  pointer-events: none;
}

.core-service-card:hover .core-service-card__image-wrap,
.core-service-card:focus-within .core-service-card__image-wrap,
.core-service-card.is-expanded .core-service-card__image-wrap {
  grid-template-rows: 0fr;
}

.core-service-card__toggle {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-xs);
  padding: var(--space-lg);
  text-align: left;
  cursor: pointer;
}

.core-service-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.core-service-card__index {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  color: rgba(var(--ghost-rgb), 0.3);
}

.core-service-card__cue {
  position: relative;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.core-service-card__cue::before,
.core-service-card__cue::after {
  content: '';
  position: absolute;
  background: var(--text-muted);
  transition: transform var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}

.core-service-card__cue::before {
  top: 50%;
  left: 0;
  width: 100%;
  height: 1px;
  transform: translateY(-50%);
}

.core-service-card__cue::after {
  left: 50%;
  top: 0;
  width: 1px;
  height: 100%;
  transform: translateX(-50%);
}

.core-service-card:hover .core-service-card__cue::before,
.core-service-card:hover .core-service-card__cue::after,
.core-service-card:focus-within .core-service-card__cue::before,
.core-service-card:focus-within .core-service-card__cue::after,
.core-service-card.is-expanded .core-service-card__cue::before,
.core-service-card.is-expanded .core-service-card__cue::after {
  background: var(--accent);
}

.core-service-card.is-expanded .core-service-card__cue::after,
.core-service-card:focus-within .core-service-card__cue::after {
  transform: translateX(-50%) scaleY(0);
}

.core-service-card__title {
  font-size: 1.3rem;
  font-weight: 700;
  line-height: var(--leading-tight);
}

.core-service-card__title em {
  display: block;
  font-style: normal;
  font-weight: 700;
  color: var(--accent);
}

.core-service-card__statement {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  line-height: var(--leading-normal);
}

.core-service-card__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur-med) var(--ease-out);
}

.core-service-card:hover .core-service-card__panel,
.core-service-card:focus-within .core-service-card__panel,
.core-service-card.is-expanded .core-service-card__panel {
  grid-template-rows: 1fr;
}

.core-service-card__panel-inner {
  overflow: hidden;
  min-height: 0;
}

.core-service-card__panel-content {
  padding: var(--space-md) var(--space-lg) var(--space-lg);
  border-top: 1px solid var(--border-subtle);
  margin-top: var(--space-2xs);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.core-service-card__desc {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  line-height: var(--leading-normal);
}

.core-service-card__group-title {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-2xs);
}

.core-service-card__list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.core-service-card__list li {
  position: relative;
  padding-left: var(--space-sm);
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: var(--leading-snug);
}

.core-service-card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 1px;
  transform: rotate(45deg);
}

@media (max-width: 900px) {
  .core-services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 620px) {
  .core-services-grid {
    grid-template-columns: 1fr;
  }
}

/* No hover on touch devices — rely entirely on tap-toggled .is-expanded */
@media (hover: none) {
  .core-service-card:hover .core-service-card__panel {
    grid-template-rows: 0fr;
  }

  .core-service-card.is-expanded .core-service-card__panel {
    grid-template-rows: 1fr;
  }

  .core-service-card:hover .core-service-card__image-wrap {
    grid-template-rows: 1fr;
  }

  .core-service-card.is-expanded .core-service-card__image-wrap {
    grid-template-rows: 0fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .core-service-card,
  .core-service-card__panel,
  .core-service-card__image-wrap {
    transition: none;
  }
}