:root {
  --cuny-blue: #0033A1;
  --cuny-blue-dark: #00226B;
  --cuny-yellow: #FFB71B;
  --ink-black: #111827;
  --text-main: #1F2937;
  --text-muted: #4B5563;
  --bg-light: #FFFFFF;
  --bg-alt: #F4F7FB;
  --border-color: #E2E8F0;
  --nav-height: 54px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-light);
  color: var(--text-main);
  font-family: Helvetica, Arimo, Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .uppercase-heading {
  font-family: Helvetica, Arimo, Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  text-rendering: optimizeLegibility;
  margin-top: 0;
}

a {
  color: var(--cuny-blue);
  font-weight: 700;
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--cuny-blue-dark);
  text-decoration: underline;
}

.gold {
  color: #D48800;
  font-weight: 700;
}

.gold-bright {
  color: var(--cuny-yellow);
  font-weight: 700;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Top Splash Banner */
.site-header {
  background-color: var(--bg-light);
  text-align: center;
  padding: 36px 20px 28px;
}

.site-header .container {
  max-width: 100%;
  padding: 0 16px;
}

.site-header h1 {
  color: #000000;
  font-size: clamp(48px, 6.75vw, 104px);
  line-height: 1.08;
  font-weight: 700;
  text-transform: none;
  letter-spacing: -0.02em;
  margin: 0;
  display: inline-flex;
  align-items: baseline;
  justify-content: center;
  flex-wrap: nowrap;
  white-space: nowrap;
  gap: 0.22em;
}

@media (max-width: 860px) {
  .site-header h1 {
    font-size: clamp(36px, 8vw, 54px);
    flex-wrap: wrap;
    white-space: normal;
    row-gap: 0.15em;
  }
}

.header-logo {
  height: 0.98em;
  width: auto;
  vertical-align: baseline;
  transform: translateY(0.06em);
  display: inline-block;
}

/* Sticky Navigation Bar */
.sticky-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--cuny-blue);
  border-bottom: 3px solid var(--cuny-yellow);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
}

.nav-inner {
  max-width: 960px;
  margin: 0 auto;
  min-height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 18px;
  padding: 8px 20px;
}

.nav-link {
  font-family: Helvetica, Arimo, Arial, sans-serif;
  text-transform: uppercase;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.04em;
  color: #FFFFFF;
  text-decoration: none;
  padding: 6px 4px;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.nav-link:hover {
  color: var(--cuny-yellow);
  text-decoration: none;
}

.nav-link.active {
  color: var(--cuny-yellow);
  border-bottom-color: var(--cuny-yellow);
}

.nav-sep {
  color: rgba(255, 255, 255, 0.4);
  user-select: none;
  font-size: 14px;
}

/* Sections */
.section {
  padding: 72px 0;
  scroll-margin-top: var(--nav-height);
}

.section-alt {
  background-color: var(--bg-alt);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}

.section-header h2 {
  color: var(--cuny-blue);
  font-size: 26px;
  font-weight: 700;
  margin: 0;
}

.section-rule {
  height: 4px;
  width: 48px;
  background-color: var(--cuny-yellow);
  border-radius: 2px;
  display: inline-block;
}

.lead-text {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-main);
  margin: 0 0 18px;
}

/* Expandable Research Area Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 18px;
  align-items: start;
}

.research-card {
  background: var(--bg-light);
  border: 1px solid var(--border-color);
  border-left: 5px solid var(--cuny-blue);
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  overflow: hidden;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.research-card:hover {
  box-shadow: 0 4px 12px rgba(0, 51, 161, 0.08);
}

.research-card.active {
  border-left-color: var(--cuny-yellow);
  box-shadow: 0 4px 14px rgba(0, 51, 161, 0.1);
}

.research-card-toggle {
  width: 100%;
  min-height: 78px;
  background: transparent;
  border: none;
  padding: 18px 48px 18px 22px;
  text-align: left;
  cursor: pointer;
  position: relative;
  display: flex;
  align-items: center;
}

.research-card-toggle:hover h3 {
  color: var(--cuny-blue-dark);
}

.research-card-toggle h3 {
  font-size: 18px;
  line-height: 1.3;
  color: var(--cuny-blue);
  margin: 0;
}

/* Chevron indicator */
.research-card-toggle::after {
  content: "";
  position: absolute;
  right: 22px;
  top: 50%;
  width: 0;
  height: 0;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 9px solid var(--cuny-blue);
  transform: translateY(-50%);
  transition: transform 0.2s ease, border-left-color 0.2s ease;
}

.research-card.active .research-card-toggle::after {
  transform: translateY(-50%) rotate(90deg);
  border-left-color: #D48800;
}

.research-card-body {
  display: none;
  padding: 0 22px 22px;
  border-top: 1px solid var(--border-color);
}

.research-card.active .research-card-body {
  display: block;
}

.research-card-body p {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-main);
}

.research-papers {
  margin: 0;
  padding: 16px 0 0;
  list-style: none;
}

.research-papers li {
  font-size: 15px;
  line-height: 1.5;
  margin-bottom: 12px;
  padding-left: 16px;
  position: relative;
  color: var(--text-muted);
}

.research-papers li:last-child {
  margin-bottom: 0;
}

.research-papers li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: #D48800;
  font-weight: 700;
}

/* People Subsections & Grid */
.people-subsection {
  margin-bottom: 34px;
}

.people-subsection:last-child {
  margin-bottom: 0;
}

.people-subheading {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-black);
  letter-spacing: 0.05em;
  margin: 0 0 14px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--border-color);
  display: inline-block;
}

.people-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.person-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 14px 18px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--cuny-blue);
  background-color: #FAFBFD;
}

.person-name {
  font-weight: 700;
  font-size: 17px;
  color: var(--ink-black);
  margin-bottom: 3px;
}

.person-role {
  font-size: 14px;
  color: var(--text-muted);
}

/* Footer / Contact */
.site-footer {
  background-color: var(--ink-black);
  color: #FFFFFF;
  padding: 64px 0;
  scroll-margin-top: var(--nav-height);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
}

.site-footer h2 {
  color: var(--cuny-yellow);
  font-size: 22px;
  margin-bottom: 12px;
}

.site-footer p {
  margin: 6px 0;
  color: #D1D5DB;
  font-size: 15px;
}

.site-footer a {
  color: var(--cuny-yellow);
}

@media (max-width: 600px) {
  .nav-sep {
    display: none;
  }
  .nav-inner {
    gap: 6px 14px;
  }
  .nav-link {
    font-size: 13px;
  }
}