/* ============================================
   CASE STUDY — Shared Stylesheet
   (Loaded after ../styles.css)
   ============================================ */

.case-hero {
  padding: 160px 40px 80px;
  position: relative;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.case-hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.4;
}

.case-hero-bg::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 77, 28, 0.2) 0%, transparent 60%);
  filter: blur(60px);
  top: -100px;
  right: -100px;
}

.case-back {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 60px;
  transition: color 0.3s var(--ease);
}

.case-back:hover {
  color: var(--accent);
}

.case-back svg {
  width: 16px;
  height: 16px;
  transition: transform 0.3s var(--ease);
}

.case-back:hover svg {
  transform: translateX(-4px);
}

.case-meta {
  display: flex;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.case-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink);
  letter-spacing: 0.1em;
  padding: 6px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 100px;
  background: var(--bg-elev);
}

.case-tag.accent {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}

.case-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(48px, 8vw, 128px);
  line-height: 0.9;
  letter-spacing: -0.04em;
  margin-bottom: 32px;
  font-variation-settings: 'opsz' 96;
  position: relative;
  max-width: 1400px;
}

.case-summary {
  font-size: clamp(18px, 1.6vw, 24px);
  color: var(--ink);
  max-width: 800px;
  line-height: 1.4;
  margin-bottom: 64px;
}

.case-summary em {
  color: var(--accent);
  font-style: italic;
}

.case-info {
  position: relative;
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.case-info-cell {
  background: var(--bg);
  padding: 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.case-info-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.case-info-value {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
}

@media (max-width: 720px) {
  .case-info {
    grid-template-columns: repeat(2, 1fr);
  }
  .case-hero {
    padding: 120px 20px 60px;
  }
}

/* ============================================
   CASE BODY
   ============================================ */
.case-body {
  max-width: 1400px;
  margin: 0 auto;
  padding: 100px 40px;
  position: relative;
}

.case-section {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 80px;
  margin-bottom: 80px;
}

.case-section-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  position: sticky;
  top: 120px;
  align-self: start;
}

.case-section-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
  min-width: 0;
}

.case-h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(28px, 3vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.case-body p {
  color: var(--ink-dim);
  font-size: 17px;
  line-height: 1.65;
  max-width: 720px;
}

.case-body p strong {
  color: var(--ink);
  font-weight: 500;
}

.case-body p em {
  color: var(--accent);
  font-style: italic;
}

.case-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 16px;
}

.case-list li {
  position: relative;
  padding: 16px 0 16px 32px;
  color: var(--ink-dim);
  font-size: 16px;
  line-height: 1.6;
  border-top: 1px solid var(--line);
}

.case-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.case-list li::before {
  content: '◆';
  position: absolute;
  left: 0;
  top: 21px;
  color: var(--accent);
  font-size: 10px;
}

.case-list li strong {
  color: var(--ink);
  font-weight: 500;
}

/* Stack — tech tags */
.case-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.stack-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.08em;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 100px;
  transition: all 0.3s var(--ease);
}

.stack-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Key numbers in case */
.case-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin: 24px 0;
}

.case-stat {
  background: var(--bg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: background 0.4s var(--ease);
}

.case-stat:hover {
  background: var(--bg-elev);
}

.case-stat-value {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(36px, 4vw, 56px);
  line-height: 1;
  color: var(--accent);
  letter-spacing: -0.04em;
}

.case-stat-value.ink { color: var(--ink); }

.case-stat-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

@media (max-width: 900px) {
  .case-body {
    padding: 60px 20px;
  }
  .case-section {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 60px;
  }
  .case-section-label {
    position: relative;
    top: 0;
  }
  .case-stats {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   NEXT CASE
   ============================================ */
.case-next {
  border-top: 1px solid var(--line);
  padding: 80px 40px;
  background: var(--bg);
}

.next-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: end;
}

.next-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.next-link {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(36px, 5vw, 72px);
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-top: 16px;
  position: relative;
  transition: color 0.4s var(--ease);
}

.next-link:hover {
  color: var(--accent);
}

.next-arrow {
  font-family: var(--font-display);
  font-size: clamp(48px, 8vw, 120px);
  font-weight: 200;
  color: var(--ink-dim);
  text-align: right;
  line-height: 1;
  transition: all 0.4s var(--ease);
}

.next-link-wrap:hover .next-arrow {
  color: var(--accent);
  transform: translateX(20px);
}

@media (max-width: 720px) {
  .case-next { padding: 60px 20px; }
  .next-inner { grid-template-columns: 1fr; gap: 20px; }
  .next-arrow { text-align: left; }
}