/* Research highlights page for lepotatoguy.github.io/research/ */

:root {
  --ink: #102a43;
  --ink-soft: #334e68;
  --accent: #1666c5;
  --accent-dark: #0c4f9c;
  --paper: #fff;
  --mist: #f3f7fb;
  --line: #d9e2ec;
  --muted: #627d98;
  --navy: #102a43;
  --font: "Inter", "Helvetica Neue", Arial, system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.65;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  color: var(--accent);
}

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  text-wrap: balance;
}

h1,
h2 {
  font-family: var(--font);
  font-weight: 700;
  letter-spacing: -0.025em;
}

.site-container {
  width: min(1180px, 100% - 3rem);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: -5rem;
  left: 1rem;
  z-index: 100;
  background: var(--ink);
  color: #fff;
  padding: 0.7rem 1rem;
}

.skip-link:focus {
  top: 1rem;
  color: #fff;
}

/* === TOP BAR (matches the homepage nav in css/site.css) === */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid #e5e7eb;
  background: rgba(255, 255, 255, 0.94);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  max-width: 1200px;
  min-height: 56px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav-brand {
  color: #111827;
  font-family: var(--font);
  font-size: 1.05rem;
  font-weight: 700;
  white-space: nowrap;
}

.nav-brand:hover {
  color: #111827;
}

.nav-inner > nav {
  min-width: 0;
}

.nav-links {
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-links::-webkit-scrollbar {
  display: none;
}

.nav-links a {
  border-bottom: 2px solid transparent;
  padding: 4px 0;
  color: #6b7280;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 500;
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  border-bottom-color: #2563eb;
  color: #111827;
}

/* === SHARED PAGE PIECES === */
.eyebrow {
  margin-bottom: 1rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.14em;
  line-height: 1.4;
  text-transform: uppercase;
}

.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 48px;
  padding: 0.7rem 1.15rem;
  border-radius: 0.3rem;
  font-size: 0.92rem;
  font-weight: 700;
  transition: background 0.18s, color 0.18s, transform 0.18s;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  background: var(--accent);
  color: #fff;
}

.button.primary:hover {
  background: var(--accent-dark);
  color: #fff;
}

.topic-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

.topic-list li {
  border: 1px solid #627d9873;
  border-radius: 999px;
  padding: 0.38rem 0.72rem;
  font-size: 0.78rem;
  font-weight: 650;
}

.page-shell {
  min-height: 70vh;
  padding-block: clamp(4rem, 8vw, 7rem);
}

.page-intro {
  max-width: 920px;
  margin-bottom: clamp(3.5rem, 7vw, 6rem);
}

.page-intro h1 {
  margin-bottom: 1.4rem;
  font-size: clamp(2.6rem, 5vw, 4.4rem);
  line-height: 1.08;
}

.page-description {
  max-width: 760px;
  color: var(--ink-soft);
  font-size: 1.2rem;
}

.page-cta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  margin-top: 4rem;
  padding: 2rem;
  background: var(--mist);
}

.page-cta p {
  margin: 0;
  font-size: 1.15rem;
}

/* === RESEARCH HIGHLIGHTS === */
.research-intro {
  margin-bottom: clamp(2.75rem, 6vw, 5rem);
}

.research-jump-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: clamp(5rem, 9vw, 8rem);
}

.research-jump {
  --jump-accent: var(--accent);
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 230px;
  border: 1px solid var(--line);
  border-top: 5px solid var(--jump-accent);
  border-radius: 0.35rem;
  background: #fff;
  padding: 1.6rem;
  transition: transform 0.18s, box-shadow 0.18s;
}

.research-jump:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 45px #102a4317;
  color: inherit;
}

.research-jump > span:first-child {
  color: var(--jump-accent);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.research-jump strong {
  max-width: 320px;
  font-size: clamp(1.3rem, 1.9vw, 1.65rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.2;
}

.research-jump .jump-arrow {
  color: var(--jump-accent);
  font-size: 1.25rem;
}

.research-jump-teal {
  --jump-accent: #147d75;
  background: #f3fbfa;
}

.research-jump-slate {
  --jump-accent: #526b84;
  background: #f5f7fa;
}

.research-jump-amber {
  --jump-accent: #b7791f;
  background: #fffaf0;
}

.research-jump-green {
  --jump-accent: #2f855a;
  background: #f2fbf5;
}

.research-jump-violet {
  --jump-accent: #6b46c1;
  background: #f8f5ff;
}

.research-area {
  scroll-margin-top: 7rem;
  border-top: 1px solid var(--line);
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.research-area-header {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(2.5rem, 7vw, 7rem);
  align-items: start;
}

.research-area h2 {
  max-width: 610px;
  margin: 0;
  font-size: clamp(2.1rem, 4vw, 3.6rem);
  line-height: 1.1;
}

.research-area-overview > p {
  color: var(--ink-soft);
  font-size: 1.08rem;
  line-height: 1.75;
}

.research-area-overview .topic-list {
  margin-top: 1.75rem;
  color: var(--muted);
}

.research-question-band {
  display: grid;
  grid-template-columns: minmax(150px, 0.45fr) minmax(0, 1.55fr);
  gap: 2rem;
  margin: 3.5rem 0;
  border: 1px solid var(--line);
  background: var(--mist);
  padding: clamp(1.6rem, 4vw, 2.5rem);
}

.research-question-label {
  margin: 0;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.research-question-band ul {
  display: grid;
  gap: 0.85rem;
  margin: 0;
  padding-left: 1.2rem;
}

.research-question-band li {
  color: var(--ink-soft);
  line-height: 1.55;
}

.research-work-heading {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1.35rem;
}

.research-work-heading h3 {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
}

.research-work-heading span {
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 700;
}

.research-work-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.research-work-card {
  display: flex;
  flex-direction: column;
  min-height: 270px;
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  background: #fff;
  padding: 1.6rem;
}

.research-work-card .work-meta {
  margin: 0 0 1.4rem;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.research-work-card h4 {
  margin: 0 0 1rem;
  font-size: 1.2rem;
  font-weight: 650;
  letter-spacing: -0.01em;
  line-height: 1.35;
}

.research-work-card > p:last-child {
  margin: auto 0 0;
  color: var(--ink-soft);
  font-size: 0.94rem;
  line-height: 1.6;
}

.research-connection {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: clamp(2rem, 7vw, 7rem);
  align-items: end;
  margin-top: 1rem;
  border-radius: 0.35rem;
  background: var(--navy);
  color: #fff;
  padding: clamp(2rem, 5vw, 4rem);
}

.research-connection .eyebrow {
  color: #9fb3c8;
}

.research-connection h2 {
  max-width: 700px;
  margin: 0;
  font-size: clamp(1.9rem, 3.4vw, 3rem);
  line-height: 1.15;
}

.research-connection > p {
  margin: 0;
  color: #d9e2ec;
  line-height: 1.7;
}

/* === FOOTER (matches the homepage copyright line) === */
.site-footer {
  border-top: 1px solid var(--line);
}

.site-copyright {
  margin: 0;
  padding: 8px 0 28px;
  color: #9ca3af;
  font-size: 0.8rem;
  text-align: center;
}

.site-footer .site-copyright {
  padding-top: 24px;
}

/* === RESPONSIVE === */
@media (max-width: 1040px) {
  .research-jump-grid,
  .research-work-grid {
    grid-template-columns: 1fr;
  }

  .research-jump {
    min-height: 190px;
  }

  .research-area-header,
  .research-connection {
    grid-template-columns: 1fr;
  }

  .research-work-card {
    min-height: auto;
  }

  .research-work-card > p:last-child {
    margin-top: 1.5rem;
  }
}

@media (max-width: 1080px) {
  .nav-brand {
    display: none;
  }

  .nav-inner {
    justify-content: center;
  }
}

@media (max-width: 640px) {
  .site-container {
    width: min(100% - 2rem, 1180px);
  }

  .research-question-band {
    grid-template-columns: 1fr;
  }

  .research-work-heading,
  .page-cta {
    flex-direction: column;
    align-items: flex-start;
  }
}