/* ═══════════════════════════════════════════════
   Vincent Guilhermond — Case Study Pages
   case.css
   ═══════════════════════════════════════════════ */

/* ─── CASE LAYOUT ─── */
.case-container {
  position: relative;
  isolation: isolate;
  max-width: 700px;
  margin: 0 auto;
  padding: 100px 24px 120px;
}

/* ─── BACK LINK ─── */
.case-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--fg-subtle);
  text-decoration: none;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 56px;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color 0.15s, border-color 0.15s;
  opacity: 0;
  animation: fadeIn 0.5s 0.05s forwards;
}
.case-back:hover { color: var(--fg); border-color: var(--accent-design); }
.case-back::before { content: '←'; font-size: 13px; }

/* ─── CASE HEADER ─── */
.case-header {
  margin-bottom: 56px;
  opacity: 0;
  animation: fadeIn 0.6s 0.1s forwards;
}

.case-eyebrow {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 20px;
}

.case-title {
  font-size: 28px;
  font-weight: 400;
  color: var(--fg);
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 20px;
}

.case-subtitle {
  font-size: 14px;
  color: var(--fg-muted);
  font-weight: 300;
  line-height: 1.7;
  max-width: 580px;
}

/* ─── CASE META ─── */
.case-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0;
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
  margin-bottom: 56px;
  opacity: 0;
  animation: fadeIn 0.5s 0.2s forwards;
}

.case-meta-item {
  padding: 16px 20px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.case-meta-label {
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  margin-bottom: 6px;
}

.case-meta-value {
  font-size: 12px;
  color: var(--fg);
  font-weight: 400;
  line-height: 1.4;
}

/* ─── COVER IMAGE ─── */
.case-cover {
  width: 100%;
  aspect-ratio: 16/7;
  overflow: hidden;
  border: 1px solid var(--border);
  margin-bottom: 56px;
  opacity: 0;
  animation: fadeIn 0.5s 0.25s forwards;
}

.case-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ─── CONTENT BLOCKS ─── */
.case-section {
  margin-bottom: 56px;
  opacity: 0;
  animation: fadeIn 0.5s forwards;
}

.case-section-label {
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.case-section h2 {
  font-size: 18px;
  font-weight: 400;
  color: var(--fg);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  line-height: 1.3;
}

.case-section h3 {
  font-size: 13px;
  font-weight: 400;
  color: var(--fg);
  letter-spacing: 0.01em;
  margin-bottom: 10px;
  margin-top: 28px;
}

.case-section p {
  font-size: 13px;
  color: var(--fg-muted);
  font-weight: 300;
  line-height: 1.8;
  margin-bottom: 16px;
}

.case-section p strong {
  color: var(--fg);
  font-weight: 400;
}

/* ─── HIGHLIGHT BLOCK ─── */
.case-highlight {
  border-left: 2px solid var(--accent-design);
  padding: 16px 20px;
  background: var(--card);
  margin: 28px 0;
}

.case-highlight p {
  margin-bottom: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--fg);
}

/* ─── METRICS ─── */
.case-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin: 28px 0;
}

.case-metric {
  background: var(--card);
  padding: 24px 20px;
  text-align: center;
}

.case-metric-value {
  font-size: 28px;
  font-weight: 400;
  color: var(--fg);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 8px;
}

.case-metric-label {
  font-size: 10px;
  color: var(--fg-muted);
  font-weight: 300;
  letter-spacing: 0.05em;
  line-height: 1.4;
}

/* ─── IMAGE GRID ─── */
.case-img-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 28px 0;
}

.case-img-grid.single {
  grid-template-columns: 1fr;
}

.case-img-grid.triple {
  grid-template-columns: 1fr 1fr 1fr;
}

.case-img {
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--card);
}

.case-img.wide {
  aspect-ratio: 16/7;
}

.case-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.case-img-caption {
  font-size: 10px;
  color: var(--fg-subtle);
  letter-spacing: 0.04em;
  margin-top: 10px;
  text-align: center;
}

/* ─── TAG LIST ─── */
.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 16px 0 28px;
}

/* ─── STEP LIST ─── */
.case-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 20px 0;
}

.case-step {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}

.case-step:first-child { border-top: 1px solid var(--border); }

.case-step-num {
  font-size: 10px;
  color: var(--fg);
  letter-spacing: 0.08em;
  padding-top: 2px;
}

.case-step-content h4 {
  font-size: 13px;
  font-weight: 400;
  color: var(--fg);
  margin-bottom: 6px;
}

.case-step-content p {
  font-size: 12px;
  color: var(--fg-muted);
  font-weight: 300;
  line-height: 1.7;
  margin-bottom: 0;
}

/* ─── NEXT PROJECT ─── */
.case-next {
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
  opacity: 0;
  animation: fadeIn 0.5s forwards;
}

.case-next-label {
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  margin-bottom: 16px;
}

.case-next-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-decoration: none;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  transition: border-color 0.2s;
}

.case-next-link:hover { border-color: rgba(255,255,255,0.25); }
:root.light .case-next-link:hover { border-color: rgba(0,0,0,0.25); }

.case-next-title {
  font-size: 16px;
  font-weight: 400;
  color: var(--fg);
  letter-spacing: -0.02em;
  transition: color 0.15s;
}

.case-next-arrow {
  font-size: 18px;
  color: var(--fg-subtle);
  transition: transform 0.2s, color 0.15s;
}

.case-next-link:hover .case-next-arrow {
  transform: translateX(4px);
  color: var(--fg);
}

/* ─── RESPONSIVE ─── */
@media (max-width: 600px) {
  .case-container { padding: 80px 18px 80px; }
  .case-title { font-size: 22px; }
  .case-metrics { grid-template-columns: 1fr; }
  .case-img-grid { grid-template-columns: 1fr; }
  .case-img-grid.triple { grid-template-columns: 1fr; }
  .case-meta { grid-template-columns: 1fr 1fr; }
}

/* ─── CASE LIST ─── */
.case-list {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.case-list li {
  padding-left: 20px;
  position: relative;
  font-size: 15px;
  line-height: 1.6;
  color: var(--fg-subtle);
}

.case-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--fg-subtle);
  opacity: 0.5;
}