/* ── Use cases page styles ──────────────────────────────────────────── */

.uc-hero { padding: 80px 0 48px; }
@media (max-width: 600px) { .uc-hero { padding: 56px 0 32px; } }

/* Overview band */
.uc-overview {
  padding: 32px 0 64px;
  border-bottom: 1px solid var(--border-subtle);
}
.uc-overview__grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 64px;
  align-items: start;
}
@media (max-width: 900px) { .uc-overview__grid { grid-template-columns: 1fr; gap: 32px; } }
.uc-overview__big {
  font-size: clamp(72px, 11vw, 128px);
  line-height: 0.9;
  font-weight: 400;
  letter-spacing: -0.04em;
  margin-bottom: 12px;
  color: var(--fg-1);
}
.uc-overview__num .mono-label { color: var(--fg-3); }

/* Cards head */
.uc-cards-head { margin-bottom: 48px; }

/* Cards grid */
.uc-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
@media (max-width: 900px) { .uc-cards { grid-template-columns: 1fr; } }

.uc-card {
  display: flex; flex-direction: column;
  background: var(--bg-2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  text-decoration: none; color: inherit;
  transition: border-color var(--duration-base) var(--ease-standard),
              transform var(--duration-base) var(--ease-standard);
}
.uc-card:hover {
  border-color: var(--brand-blue-30);
  transform: translateY(-2px);
}
.uc-card__media {
  position: relative;
  aspect-ratio: 16 / 10;
  background: #0f0e1c;
  overflow: hidden;
  border-bottom: 1px solid var(--border-subtle);
}
.uc-card__media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.uc-card__media--placeholder { background: transparent; }

.uc-card__chrome {
  position: absolute; top: 14px; left: 14px;
  display: flex; gap: 6px;
}

.uc-card__body {
  padding: 28px;
  display: flex; flex-direction: column; gap: 12px;
}
@media (max-width: 600px) { .uc-card__body { padding: 24px; } }

.uc-card__meta {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  margin-bottom: 4px;
}
.uc-card__title { letter-spacing: -0.01em; font-weight: 400; }
.uc-card p { color: var(--fg-2); font-size: 14px; line-height: 1.6; }
.uc-card__cta {
  margin-top: auto;
  padding-top: 16px;
  font-size: 14px; font-weight: 500;
  color: var(--brand-blue-link);
  display: inline-flex; align-items: center; gap: 6px;
}
.uc-card__cta .arrow { transition: transform var(--duration-base) var(--ease-standard); }
.uc-card:hover .uc-card__cta .arrow { transform: translateX(3px); }

.chip-tag {
  display: inline-flex; align-items: center;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  padding: 3px 8px;
  border: 1px solid var(--border-strong);
  border-radius: 9999px;
  color: var(--fg-2);
  background: var(--bg-2);
  white-space: nowrap;
}
.chip-tag--brand {
  border-color: var(--brand-blue-30);
  color: var(--brand-blue-link);
  background: var(--brand-blue-06);
}

.hud-pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 9999px;
  font-size: 11px;
  color: var(--white);
}
.hud-pill--mono { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 1.2px; }

/* Pattern (common thread) */
.pattern-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  background: var(--bg-2);
  overflow: hidden;
}
@media (max-width: 900px) { .pattern-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .pattern-grid { grid-template-columns: 1fr; } }

.pattern { padding: 32px 28px; border-right: 1px solid var(--border-subtle); display: flex; flex-direction: column; gap: 12px; }
.pattern:last-child { border-right: none; }
@media (max-width: 900px) {
  .pattern:nth-child(2n) { border-right: none; }
  .pattern:nth-child(-n+2) { border-bottom: 1px solid var(--border-subtle); }
}
@media (max-width: 600px) {
  .pattern { border-right: none; border-bottom: 1px solid var(--border-subtle); }
  .pattern:last-child { border-bottom: none; }
}
.pattern__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1.2px;
  color: var(--brand-blue-link);
}
.pattern p { color: var(--fg-2); font-size: 14px; line-height: 1.6; }

/* ── Subpage layout (use-cases/<slug>.html) ───────────────────────────── */
.uc-sub-hero { padding: 64px 0 48px; }
.uc-sub-hero .uc-trail {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 24px;
}
.uc-trail a { color: var(--fg-3); }
.uc-trail a:hover { color: var(--brand-blue-link); }

.uc-sub-meta {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  margin-bottom: 24px;
}

.uc-sub-media {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  aspect-ratio: 16 / 9;
  background: #0f0e1c;
  margin: 0 auto 64px;
  max-width: 100%;
}
.uc-sub-media img { width: 100%; height: 100%; object-fit: cover; }
.uc-sub-media--placeholder { background: transparent; }

.uc-section { padding: 64px 0; border-top: 1px solid var(--border-subtle); }
.uc-section:first-of-type { border-top: none; }
.uc-section h2 { margin-bottom: 24px; }
.uc-section .prose { max-width: 68ch; }

.uc-pillbox {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
}
@media (max-width: 720px) { .uc-pillbox { grid-template-columns: 1fr; } }
.uc-pillbox > div {
  padding: 20px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: var(--bg-2);
}
.uc-pillbox .mono-label { margin-bottom: 8px; }
.uc-pillbox p { font-size: 14px; color: var(--fg-2); line-height: 1.6; }

/* Next/prev nav between subpages */
.uc-sub-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 48px 0;
  border-top: 1px solid var(--border-subtle);
}
.uc-sub-nav a {
  display: flex; flex-direction: column; gap: 6px;
  padding: 24px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  background: var(--bg-2);
  transition: border-color var(--duration-base) var(--ease-standard);
}
.uc-sub-nav a:hover { border-color: var(--brand-blue-30); }
.uc-sub-nav .mono-label { color: var(--fg-3); }
.uc-sub-nav__title { font-size: 16px; font-weight: 500; color: var(--fg-1); }
.uc-sub-nav__prev { text-align: left; }
.uc-sub-nav__next { text-align: right; }
@media (max-width: 600px) { .uc-sub-nav { grid-template-columns: 1fr; } }