/* Custom Quarto site design for Robert Fithen, PhD */
:root {
  --rf-navy: #0f172a;
  --rf-blue: #2563eb;
  --rf-sky: #38bdf8;
  --rf-teal: #14b8a6;
  --rf-green: #22c55e;
  --rf-ink: #0f172a;
  --rf-muted: #475569;
  --rf-soft: #f8fafc;
  --rf-line: rgba(15, 23, 42, .11);
  --rf-card: rgba(255, 255, 255, .84);
}

body {
  color: var(--rf-ink);
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, .18), transparent 32rem),
    radial-gradient(circle at 90% 12%, rgba(34, 197, 94, .13), transparent 27rem),
    linear-gradient(180deg, #ffffff 0%, #f8fafc 55%, #ffffff 100%);
}

.navbar {
  backdrop-filter: blur(16px);
  box-shadow: 0 10px 35px rgba(15, 23, 42, .08);
}

.navbar-brand, .navbar-nav .nav-link {
  letter-spacing: .01em;
}

#title-block-header { display: none; }

main.content {
  max-width: 1180px;
}

.hero {
  margin: 2.5rem 0 2rem;
  padding: clamp(2rem, 5vw, 5rem);
  border: 1px solid var(--rf-line);
  border-radius: 32px;
  background: linear-gradient(135deg, rgba(255,255,255,.92), rgba(240,249,255,.86));
  box-shadow: 0 28px 90px rgba(15, 23, 42, .12);
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, .75fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: center;
  overflow: hidden;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  inset: auto -8rem -11rem auto;
  width: 25rem;
  height: 25rem;
  background: radial-gradient(circle, rgba(37, 99, 235, .16), transparent 70%);
}

.eyebrow {
  color: var(--rf-blue);
  text-transform: uppercase;
  letter-spacing: .16em;
  font-weight: 800;
  font-size: .78rem;
  margin-bottom: .65rem;
}

.hero h1 {
  font-size: clamp(2.6rem, 6vw, 5.9rem);
  line-height: .94;
  letter-spacing: -.06em;
  margin: 0 0 1.1rem;
  color: #08111f;
}

.hero h1 .accent {
  background: linear-gradient(90deg, var(--rf-blue), var(--rf-teal));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.lead {
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  line-height: 1.55;
  color: var(--rf-muted);
  max-width: 64ch;
}

.hero-visual img {
  width: 100%;
  max-width: 420px;
  border-radius: 28px;
  display: block;
  margin-inline: auto;
  box-shadow: 0 18px 50px rgba(15, 23, 42, .18);
}

.button-row {
  margin-top: 1.7rem;
  display: flex;
  gap: .8rem;
  flex-wrap: wrap;
}

.rf-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  border-radius: 999px;
  padding: .82rem 1.15rem;
  text-decoration: none !important;
  font-weight: 800;
  border: 1px solid rgba(37, 99, 235, .22);
}

.rf-button.primary {
  color: white;
  background: linear-gradient(90deg, var(--rf-blue), #0ea5e9);
  box-shadow: 0 12px 28px rgba(37,99,235,.26);
}

.rf-button.secondary {
  color: var(--rf-navy);
  background: rgba(255,255,255,.8);
}

.metric-grid, .card-grid, .expertise-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 2.25rem;
}

.metric, .rf-card, .expertise-card, .callout-panel {
  background: var(--rf-card);
  border: 1px solid var(--rf-line);
  border-radius: 24px;
  padding: 1.2rem;
  box-shadow: 0 14px 40px rgba(15, 23, 42, .07);
}

.metric strong {
  display: block;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  line-height: 1;
  color: var(--rf-blue);
  letter-spacing: -.045em;
}

.metric span, .muted { color: var(--rf-muted); }

.section-kicker {
  margin-top: 3rem;
  color: var(--rf-blue);
  text-transform: uppercase;
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .16em;
}

h2 {
  letter-spacing: -.035em;
  font-weight: 850;
  margin-top: .5rem;
}

h3 { font-weight: 800; }

.expertise-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.expertise-card h3 { margin-top: 0; color: #0f172a; }
.expertise-card p { color: var(--rf-muted); margin-bottom: 0; }

.timeline {
  position: relative;
  margin: 2rem 0;
  padding-left: 1.25rem;
}
.timeline::before {
  content: "";
  position: absolute;
  left: .35rem;
  top: .4rem;
  bottom: .4rem;
  width: 3px;
  background: linear-gradient(var(--rf-sky), var(--rf-teal));
  border-radius: 99px;
}
.timeline-item {
  position: relative;
  padding: 0 0 1.6rem 1.6rem;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -.15rem;
  top: .25rem;
  width: .9rem;
  height: .9rem;
  border-radius: 999px;
  background: #fff;
  border: 4px solid var(--rf-blue);
}
.timeline-date {
  color: var(--rf-blue);
  font-weight: 900;
  font-size: .92rem;
}
.timeline-title { font-weight: 850; font-size: 1.12rem; }
.timeline-desc { color: var(--rf-muted); }

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  margin: 1rem 0 2rem;
}
.pill {
  display: inline-block;
  padding: .45rem .7rem;
  border-radius: 999px;
  background: rgba(37,99,235,.08);
  color: #1e3a8a;
  border: 1px solid rgba(37,99,235,.13);
  font-size: .92rem;
  font-weight: 700;
}

.pub-list {
  display: grid;
  gap: .75rem;
  margin-top: 1.25rem;
}
.pub-item {
  padding: 1rem 1.1rem;
  background: rgba(255,255,255,.86);
  border: 1px solid var(--rf-line);
  border-radius: 18px;
}
.pub-year { color: var(--rf-blue); font-weight: 900; }
.pub-title { font-weight: 800; }
.pub-venue { color: var(--rf-muted); }

.course-columns {
  columns: 2 330px;
  column-gap: 2rem;
}
.course-columns li { break-inside: avoid; margin-bottom: .35rem; }

.footer-note {
  border-top: 1px solid var(--rf-line);
  margin-top: 4rem;
  padding-top: 1.5rem;
  color: var(--rf-muted);
  font-size: .94rem;
}

@media (max-width: 920px) {
  .hero { grid-template-columns: 1fr; }
  .metric-grid, .card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .expertise-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .metric-grid, .card-grid { grid-template-columns: 1fr; }
  .hero { border-radius: 22px; }
}


/* Active research and finance-pivot additions */
.research-hero {
  margin: 2.5rem 0 2rem;
  padding: clamp(2rem, 5vw, 4.5rem);
  border: 1px solid var(--rf-line);
  border-radius: 32px;
  background:
    radial-gradient(circle at 85% 20%, rgba(20, 184, 166, .18), transparent 22rem),
    linear-gradient(135deg, rgba(255,255,255,.94), rgba(239,246,255,.90));
  box-shadow: 0 28px 90px rgba(15, 23, 42, .12);
}
.research-hero h1 {
  font-size: clamp(2.6rem, 6vw, 5.4rem);
  line-height: .96;
  letter-spacing: -.055em;
  margin: 0 0 1.1rem;
}
.role-banner {
  margin: 1.25rem 0 2rem;
  padding: 1rem 1.15rem;
  border-radius: 22px;
  background: linear-gradient(90deg, rgba(37,99,235,.09), rgba(20,184,166,.10));
  border: 1px solid rgba(37,99,235,.18);
  color: var(--rf-navy);
}
.research-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 2.25rem;
}
.research-card {
  background: var(--rf-card);
  border: 1px solid var(--rf-line);
  border-radius: 24px;
  padding: 1.2rem;
  box-shadow: 0 14px 40px rgba(15, 23, 42, .07);
  position: relative;
  overflow: hidden;
}
.research-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 5px;
  background: linear-gradient(90deg, var(--rf-blue), var(--rf-teal));
}
.research-card h3 { margin-top: .3rem; }
.split-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 2.25rem;
}
.split-copy {
  background: rgba(255,255,255,.86);
  border: 1px solid var(--rf-line);
  border-radius: 24px;
  padding: 1.25rem;
  box-shadow: 0 14px 40px rgba(15, 23, 42, .06);
}
.pipeline-image {
  width: 100%;
  border-radius: 26px;
  border: 1px solid var(--rf-line);
  box-shadow: 0 18px 50px rgba(15, 23, 42, .10);
  margin: 1.25rem 0;
}
.question-list {
  background: rgba(255,255,255,.86);
  border: 1px solid var(--rf-line);
  border-radius: 24px;
  padding: 1.25rem 1.5rem;
  box-shadow: 0 14px 40px rgba(15, 23, 42, .06);
}
@media (max-width: 920px) {
  .research-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split-panel { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .research-grid { grid-template-columns: 1fr; }
}


/* Corporate experience page additions */
.corp-hero {
  margin: 2.5rem 0 2rem;
  padding: clamp(2rem, 5vw, 4.5rem);
  border: 1px solid var(--rf-line);
  border-radius: 32px;
  background:
    radial-gradient(circle at 88% 18%, rgba(34, 197, 94, .20), transparent 22rem),
    radial-gradient(circle at 12% 78%, rgba(37, 99, 235, .13), transparent 22rem),
    linear-gradient(135deg, rgba(255,255,255,.95), rgba(240,253,250,.90));
  box-shadow: 0 28px 90px rgba(15, 23, 42, .12);
}
.corp-hero h1 {
  font-size: clamp(2.6rem, 6vw, 5.4rem);
  line-height: .96;
  letter-spacing: -.055em;
  margin: 0 0 1.1rem;
}
.corp-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 2.5rem;
}
.corp-card {
  background: var(--rf-card);
  border: 1px solid var(--rf-line);
  border-radius: 24px;
  padding: 1.25rem;
  box-shadow: 0 14px 40px rgba(15, 23, 42, .07);
  position: relative;
  overflow: hidden;
}
.corp-card.featured {
  background: linear-gradient(135deg, rgba(37,99,235,.09), rgba(20,184,166,.10)), rgba(255,255,255,.88);
}
.corp-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 5px;
  background: linear-gradient(90deg, var(--rf-blue), var(--rf-teal), var(--rf-green));
}
.corp-card h3 { margin-top: .35rem; margin-bottom: .25rem; }
.corp-date {
  display: inline-block;
  color: #1e3a8a;
  font-weight: 900;
  font-size: .92rem;
  margin-bottom: .65rem;
}
.impact-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 2.25rem;
}
.impact-item {
  background: rgba(255,255,255,.86);
  border: 1px solid var(--rf-line);
  border-radius: 22px;
  padding: 1.1rem;
  box-shadow: 0 12px 34px rgba(15, 23, 42, .06);
}
.impact-item strong { display: block; color: var(--rf-blue); margin-bottom: .4rem; }
.impact-item span { color: var(--rf-muted); }
@media (max-width: 920px) {
  .corp-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .impact-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .corp-grid, .impact-strip { grid-template-columns: 1fr; }
}