/* Use Cases — filter chips + loop cards */

.pa-uc-page .pa-news-shell {
  width: min(72rem, calc(100% - 2.5rem));
}

.pa-uc-page .pa-news-hero {
  max-width: 46rem;
  margin-bottom: 2.5rem;
}

@media (min-width: 640px) {
  .pa-uc-page .pa-news-hero {
    margin-bottom: 3.25rem;
  }
}

.pa-uc-page .pa-news-title {
  font-size: clamp(2.15rem, 5vw, 3.15rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.pa-uc-kicker {
  margin: 0 0 0.7rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--pa-news-muted-soft);
}

.pa-uc-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0 0 1.75rem;
}

.pa-uc-chip {
  appearance: none;
  border: 1px solid var(--pa-news-card-border);
  background: transparent;
  color: var(--pa-news-fg);
  border-radius: 999px;
  padding: 0.32rem 0.75rem;
  font: inherit;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  cursor: pointer;
  line-height: 1.3;
}

.pa-uc-chip small {
  margin-left: 0.28rem;
  color: var(--pa-news-muted);
  font-weight: 500;
}

.pa-uc-chip.is-on {
  background: var(--pa-news-fg);
  border-color: var(--pa-news-fg);
  color: var(--pa-news-bg);
}

.pa-uc-chip.is-on small {
  color: inherit;
  opacity: 0.7;
}

.pa-uc-chip:focus-visible {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

.pa-uc-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 720px) {
  .pa-uc-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.15rem;
  }
}

.pa-uc-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--pa-news-card-border);
  background: var(--pa-news-card);
  border-radius: 1rem;
  color: inherit;
}

.pa-uc-card__link {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  text-decoration: none;
  color: inherit;
}

.pa-uc-card__foot {
  margin: 0;
  padding: 0 1.3rem 1.15rem;
  font-size: 0.78rem;
  color: var(--pa-news-muted);
}

.pa-uc-card__foot a {
  color: var(--pa-news-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.pa-uc-card__foot a:hover {
  color: var(--pa-news-fg);
  border-bottom-color: color-mix(in srgb, var(--pa-news-fg) 35%, transparent);
}

.pa-uc-card:hover {
  border-color: var(--pa-news-card-border-hover);
}

.pa-uc-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 50%, color-mix(in srgb, var(--pa-uc-tone) 18%, transparent) 0%, transparent 62%),
    linear-gradient(160deg, #16161a 0%, #0c0c0e 55%, color-mix(in srgb, var(--pa-uc-tone) 10%, #0a0a0c) 100%);
}

html[data-pa-theme="day"] .pa-uc-card__media {
  background:
    radial-gradient(circle at 50% 50%, color-mix(in srgb, var(--pa-uc-tone) 16%, transparent) 0%, transparent 62%),
    linear-gradient(160deg, #ececef 0%, #f7f7f8 55%, color-mix(in srgb, var(--pa-uc-tone) 12%, #fff) 100%);
}

.pa-uc-card[data-uc-tone="blue"] { --pa-uc-tone: #3b82f6; }
.pa-uc-card[data-uc-tone="sky"] { --pa-uc-tone: #0ea5e9; }
.pa-uc-card[data-uc-tone="teal"] { --pa-uc-tone: #14b8a6; }
.pa-uc-card[data-uc-tone="emerald"] { --pa-uc-tone: #10b981; }
.pa-uc-card[data-uc-tone="lime"] { --pa-uc-tone: #84cc16; }
.pa-uc-card[data-uc-tone="amber"] { --pa-uc-tone: #f59e0b; }
.pa-uc-card[data-uc-tone="orange"] { --pa-uc-tone: #f97316; }
.pa-uc-card[data-uc-tone="rose"] { --pa-uc-tone: #f43f5e; }
.pa-uc-card[data-uc-tone="violet"] { --pa-uc-tone: #8b5cf6; }
.pa-uc-card[data-uc-tone="pink"] { --pa-uc-tone: #ec4899; }
.pa-uc-card[data-uc-tone="indigo"] { --pa-uc-tone: #6366f1; }
.pa-uc-card[data-uc-tone="zinc"] { --pa-uc-tone: #a1a1aa; }

.pa-uc-card__icon {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
}

.pa-uc-card__icon span {
  display: grid;
  place-items: center;
  width: 4.25rem;
  height: 4.25rem;
  border-radius: 1rem;
  background: var(--pa-news-card);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.28);
  color: var(--pa-uc-tone);
}

html[data-pa-theme="day"] .pa-uc-card__icon span {
  box-shadow: 0 10px 28px rgba(9, 9, 11, 0.1);
  border: 1px solid var(--pa-news-card-border);
}

.pa-uc-card__icon svg {
  width: 2rem;
  height: 2rem;
}

.pa-uc-card__body {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.25rem 1.3rem 1.35rem;
}

.pa-uc-card__tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.68rem;
  font-weight: 600;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--pa-news-muted);
}

.pa-uc-card__tag::before {
  content: "";
  width: 0.7rem;
  height: 0.7rem;
  background:
    linear-gradient(var(--pa-news-fg), var(--pa-news-fg)) center / 1.5px 100% no-repeat,
    linear-gradient(var(--pa-news-fg), var(--pa-news-fg)) center / 100% 1.5px no-repeat,
    linear-gradient(var(--pa-news-fg), var(--pa-news-fg)) center / 1.5px 100% no-repeat,
    linear-gradient(var(--pa-news-fg), var(--pa-news-fg)) center / 100% 1.5px no-repeat;
  transform: rotate(45deg);
  opacity: 0.85;
}

.pa-uc-card__title {
  margin: 0;
  font-size: 1.12rem;
  font-weight: 550;
  letter-spacing: -0.03em;
  line-height: 1.28;
}

.pa-uc-card__excerpt {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--pa-news-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.pa-uc-empty {
  display: none;
  margin: 0;
  color: var(--pa-news-muted);
}

.pa-uc-grid:not(:has(.pa-uc-card:not([hidden]))) + .pa-uc-empty {
  display: block;
}

.pa-uc-cta {
  margin: 4rem 0 0;
  padding: 2.25rem 1.75rem;
  border: 1px solid var(--pa-news-card-border);
  background: var(--pa-news-card);
  border-radius: 0.35rem;
  max-width: none;
}

.pa-uc-cta .pa-uc-kicker {
  margin-bottom: 0.85rem;
}

.pa-uc-cta h2 {
  margin: 0 0 0.65rem;
  font-size: clamp(1.45rem, 2.6vw, 1.85rem);
  font-weight: 550;
  letter-spacing: -0.03em;
}

.pa-uc-cta p {
  margin: 0 0 1.15rem;
  max-width: 36rem;
  color: var(--pa-news-muted);
  line-height: 1.55;
}

.pa-uc-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

@media (prefers-reduced-motion: no-preference) {
  .pa-uc-chip,
  .pa-uc-card {
    transition: border-color 0.18s ease, background 0.18s ease, color 0.18s ease;
  }
  .pa-uc-card__icon span {
    transition: transform 0.45s ease;
  }
  .pa-uc-card:hover .pa-uc-card__icon span {
    transform: scale(1.04);
  }
}

/* ─── Audience section on listing ─── */
.pa-uc-audience-section {
  margin-bottom: 3.5rem;
}

.pa-uc-audience-section__head,
.pa-uc-loops-section__head {
  max-width: 40rem;
  margin-bottom: 1.5rem;
}

.pa-uc-audience-section__title,
.pa-uc-loops-section__title {
  margin: 0 0 0.5rem;
  font-size: clamp(1.35rem, 2.8vw, 1.75rem);
  font-weight: 550;
  letter-spacing: -0.03em;
  color: var(--pa-news-fg);
}

.pa-uc-audience-section__lead,
.pa-uc-loops-section__lead {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--pa-news-muted);
}

.pa-uc-loops-section {
  margin-bottom: 0;
}

.pa-uc-grid--audiences {
  margin-bottom: 0;
}

/* ─── Audience detail page ─── */
.pa-uc-detail-shell {
  max-width: 46rem;
}

.pa-uc-detail-hero {
  margin-bottom: 2.5rem;
}

.pa-uc-detail-title {
  margin: 0 0 0.85rem;
  font-size: clamp(1.85rem, 4vw, 2.65rem);
  font-weight: 550;
  letter-spacing: -0.035em;
  line-height: 1.12;
  color: var(--pa-news-fg);
}

.pa-uc-detail-lead {
  margin: 0 0 1.25rem;
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--pa-news-muted);
}

.pa-uc-detail-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.pa-uc-detail-block {
  margin-bottom: 2.25rem;
  padding-bottom: 2.25rem;
  border-bottom: 1px solid var(--pa-news-card-border);
}

.pa-uc-detail-block:last-of-type {
  border-bottom: 0;
}

.pa-uc-detail-block h2 {
  margin: 0 0 0.85rem;
  font-size: 1.25rem;
  font-weight: 550;
  letter-spacing: -0.02em;
  color: var(--pa-news-fg);
}

.pa-uc-detail-block > p {
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.65;
  color: var(--pa-news-muted);
}

.pa-uc-detail-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.pa-uc-detail-steps li {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 0.85rem;
  align-items: start;
  padding: 1rem 1.05rem;
  border-radius: 0.75rem;
  border: 1px solid var(--pa-news-card-border);
  background: rgba(255, 255, 255, 0.02);
}

html[data-pa-theme="day"] .pa-uc-detail-steps li {
  background: rgba(9, 9, 11, 0.02);
}

.pa-uc-detail-steps__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.55rem;
  background: rgba(59, 130, 246, 0.12);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--pa-news-fg);
}

.pa-uc-detail-steps__body strong {
  display: block;
  margin-bottom: 0.3rem;
  color: var(--pa-news-fg);
  font-weight: 600;
}

.pa-uc-detail-steps__body p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--pa-news-muted);
}

.pa-uc-detail-outcomes {
  margin: 0;
  padding-left: 1.2rem;
}

.pa-uc-detail-outcomes li {
  font-size: 0.98rem;
  line-height: 1.55;
  color: var(--pa-news-muted);
}

.pa-uc-detail-outcomes li + li {
  margin-top: 0.45rem;
}

.pa-uc-detail-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.pa-uc-detail-tool {
  display: inline-flex;
  padding: 0.32rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--pa-news-card-border);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--pa-news-fg);
}

.pa-uc-detail-faq {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.pa-uc-detail-faq__item {
  border-radius: 0.75rem;
  border: 1px solid var(--pa-news-card-border);
  background: rgba(255, 255, 255, 0.02);
  overflow: hidden;
}

html[data-pa-theme="day"] .pa-uc-detail-faq__item {
  background: rgba(9, 9, 11, 0.02);
}

.pa-uc-detail-faq__item summary {
  padding: 0.85rem 1rem;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--pa-news-fg);
  cursor: pointer;
  list-style: none;
}

.pa-uc-detail-faq__item summary::-webkit-details-marker {
  display: none;
}

.pa-uc-detail-faq__item[open] summary {
  border-bottom: 1px solid var(--pa-news-card-border);
}

.pa-uc-detail-faq__item p {
  margin: 0;
  padding: 0.85rem 1rem 1rem;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--pa-news-muted);
}