/* Shared styles for research area detail pages.
   Matches /research.html: black hero, Snap yellow, white content. */

:root {
  --ra-indigo: #111111;
  --ra-indigo-soft: #444444;
  --ra-green: #fefc00;
  --ra-bg: #ffffff;
  --ra-ink: #3f4453;
  --ra-focus: 0 0 0 3px rgba(254, 252, 0, 0.55);
}

/* Black hero band */
.area-hero {
  background: #000;
  padding: 128px 0 72px;
  position: relative;
  overflow: hidden;
}
.area-hero .container {
  position: relative;
  z-index: 1;
  max-width: 860px;
}

.area-hero__back {
  margin-bottom: 28px;
}

.area-hero__tag {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: #fefc00;
  margin: 0 0 16px;
}

.area-hero__title {
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 700;
  color: #fff;
  margin: 0 0 22px;
  line-height: 1.04;
  letter-spacing: -.02em;
}

.area-hero__body {
  font-size: 16px;
  line-height: 1.7;
  color: #b8b8bd;
  max-width: 640px;
  margin: 0;
}

/* Topics — descriptive only; no hover affordance */
.area-topics {
  background: #fff;
  padding: 64px 0 48px;
  border-bottom: 1px solid #ececef;
}
.area-topics__label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: #8a8f9c;
  margin: 0 0 24px;
}
.area-topics__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.area-topic-item {
  border: 2px solid #ececef;
  border-radius: 18px;
  padding: 22px 22px;
  background: #fff;
}
.area-topic-item h4 {
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 6px;
  letter-spacing: .01em;
  color: var(--ra-indigo);
}
.area-topic-item p {
  font-size: 13px;
  color: #63697a;
  line-height: 1.5;
  margin: 0;
}

/* Publications */
.area-pubs {
  padding: 64px 0 56px;
  background: #fff;
}
.area-pubs__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}
.area-pubs__title {
  font-size: 26px;
  font-weight: 700;
  margin: 0;
  color: var(--ra-indigo);
}
.area-pubs__all {
  font-size: 14px;
  font-weight: 600;
  color: var(--ra-indigo);
  text-decoration: underline;
  transition: color .2s ease;
}
.area-pubs__all:hover,
.area-pubs__all:focus-visible {
  color: var(--ra-indigo-soft);
  outline: none;
}

/* Bottom nav */
.area-bottom-nav {
  background: #f6f7f9;
  padding: 48px 0;
  border-top: 1px solid #ececef;
}
.area-bottom-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}
.area-bottom-nav__text { font-size: 15px; color: #63697a; margin: 0; }
.area-bottom-nav__text strong { color: var(--ra-indigo); }
.area-bottom-nav__links { display: flex; gap: 12px; flex-wrap: wrap; justify-content: flex-end; }
/* Area nav pills: use .sr-btn.sr-btn-sm + primary/secondary from main.css */

@media (max-width: 900px) {
  .area-topics__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .area-hero { padding: 110px 0 56px; }
  .area-bottom-nav .container { flex-direction: column; align-items: flex-start; }
  .area-bottom-nav__links { justify-content: flex-start; }
  .area-pubs__header { flex-direction: column; }
}

@media (max-width: 560px) {
  .area-topics__grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .area-pubs__all {
    transition: none;
  }
}