/*
 * Semantic case-study layout variants
 * -----------------------------------
 * These rules vary presentation according to the narrative density already
 * declared on each case-page body. DOM order and content remain unchanged.
 */

.case-page .flow-step,
.case-page .benefit-card,
.case-page .gallery-card {
  transition: transform 180ms ease-out, box-shadow 180ms ease-out;
}

@media (min-width: 761px) {
  /* Feature cases: a connected operational sequence and bento-like evidence. */
  .case-feature .flow {
    position: relative;
    grid-template-columns: repeat(5, minmax(0, 1fr)) !important;
    gap: 0.75rem !important;
  }

  .case-feature .flow::before {
    content: "";
    position: absolute;
    top: 1.55rem;
    left: 8%;
    right: 8%;
    height: 2px;
    background: linear-gradient(90deg, var(--sec), var(--sec-c));
    opacity: 0.45;
  }

  .case-feature .flow-step {
    position: relative;
    z-index: 1;
  }

  .case-feature .flow-step:nth-child(even) {
    transform: translateY(1.5rem);
  }

  .case-feature .benefits-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr)) !important;
    grid-auto-flow: dense;
  }

  .case-feature .benefit-card {
    grid-column: span 4;
  }

  .case-feature .benefit-card:nth-child(-n+2) {
    grid-column: span 6;
  }

  .case-feature .gallery-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr)) !important;
    grid-auto-flow: dense;
  }

  .case-feature .gallery-card:first-child {
    grid-column: span 8;
  }

  .case-feature .gallery-card:not(:first-child) {
    grid-column: span 4;
  }

  /* Checklist cases: scanned evidence reads like an editorial contact sheet. */
  .case-checklist .gallery-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr)) !important;
    grid-auto-flow: dense;
  }

  .case-checklist .gallery-card {
    grid-column: span 4;
  }

  .case-checklist .gallery-card:nth-child(6n + 1) {
    grid-column: span 8;
  }

  .case-checklist .gallery-card:nth-child(6n + 4),
  .case-checklist .gallery-card:nth-child(6n + 5) {
    grid-column: span 6;
  }

  .case-checklist .gallery-card:nth-child(6n + 1) img {
    min-height: 19rem;
  }

  .case-checklist .benefits-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  }

  .case-checklist .benefit-card {
    min-height: auto !important;
    border-top: 1px solid var(--out-v) !important;
    border-left: 5px solid var(--sec) !important;
  }

  /* Control-tower cases: one lead screen followed by supporting views. */
  .case-tower .gallery-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr)) !important;
    grid-auto-flow: dense;
  }

  .case-tower .gallery-card {
    grid-column: span 4;
  }

  .case-tower .gallery-card:first-child {
    grid-column: span 12;
  }

  .case-tower .gallery-card:nth-child(2),
  .case-tower .gallery-card:nth-child(3) {
    grid-column: span 6;
  }

  .case-tower .gallery-card:first-child img {
    min-height: 26rem;
    object-fit: contain;
  }

  /* Impact cases: make the first outcome the visual anchor. */
  .case-impact .benefits-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr)) !important;
    grid-auto-flow: dense;
  }

  .case-impact .benefit-card {
    grid-column: span 4;
  }

  .case-impact .benefit-card:first-child {
    grid-column: span 8;
    background: var(--primary) !important;
    color: #fff;
    border-color: var(--sec-c) !important;
  }

  .case-impact .benefit-card:first-child :is(h3, strong, .benefit-title, .benefit-value) {
    color: var(--sec-c) !important;
  }

  .case-impact .benefit-card:first-child :is(p, span, .benefit-copy, .benefit-source) {
    color: rgba(255, 255, 255, 0.82);
  }

  /* Compact cases: evidence becomes a readable sequence instead of tiles. */
  .case-compact .benefits-grid {
    grid-template-columns: 1fr !important;
  }

  .case-compact .benefit-card {
    display: grid !important;
    grid-template-columns: minmax(9rem, 0.42fr) 1fr;
    align-items: center;
    column-gap: 1.5rem;
    min-height: auto !important;
    border-top: 1px solid var(--out-v) !important;
    border-left: 5px solid var(--sec) !important;
  }

  .case-compact .benefit-card:nth-child(even) {
    margin-left: 3rem;
  }

  /* Dark-hero cases: alternating rhythm echoes an execution timeline. */
  .case-darkhero .flow {
    grid-template-columns: repeat(5, minmax(0, 1fr)) !important;
    align-items: start;
  }

  .case-darkhero .flow-step:nth-child(even) {
    margin-top: 2.25rem;
    background: var(--primary) !important;
    color: #fff;
  }

  .case-darkhero .flow-step:nth-child(even) :is(.flow-title, strong) {
    color: var(--sec-c) !important;
  }

  .case-darkhero .flow-step:nth-child(even) :is(.flow-copy, p, span) {
    color: rgba(255, 255, 255, 0.8);
  }

  /* Gallery-led cases mix wide context shots with focused details. */
  .case-gallery .gallery-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr)) !important;
    grid-auto-flow: dense;
  }

  .case-gallery .gallery-card {
    grid-column: span 5;
  }

  .case-gallery .gallery-card:nth-child(3n + 1) {
    grid-column: span 7;
  }
}

@media (max-width: 760px) {
  .case-page .flow,
  .case-page .benefits-grid,
  .case-page .gallery-grid {
    grid-template-columns: 1fr !important;
  }

  .case-page :is(.flow-step, .benefit-card, .gallery-card) {
    grid-column: auto !important;
    grid-row: auto !important;
    margin-left: 0 !important;
    margin-top: 0 !important;
    transform: none !important;
  }

  .case-feature .flow::before {
    display: none;
  }

  .case-compact .benefit-card {
    display: block !important;
  }

  .case-page .gallery-card img {
    min-height: 0 !important;
    max-height: 17rem;
    object-fit: contain;
  }
}

@media (prefers-reduced-motion: reduce) {
  .case-page .flow-step,
  .case-page .benefit-card,
  .case-page .gallery-card {
    transition: none;
  }
}