:root {
  --lsu-purple: #461D7C;
  --lsu-gold: #FDD023;
  --deep-purple: #28104f;
  --ink: #182033;
  --muted: #667085;
  --surface: #ffffff;
  --surface-soft: #f7f3ff;
  --line: rgba(70, 29, 124, 0.14);
  --shadow: 0 24px 70px rgba(40, 16, 79, 0.18);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: #fff;
  line-height: 1.6;
}

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

.container {
  /* width: min(1120px, calc(100% - 40px)); */
  width: min(1280px, calc(100% - 56px));
  margin: 0 auto;
}

/* =========================
   SECTION COLOR SYSTEM
========================= */

.section {
  padding: 88px 0;
}

.section-white {
  background: #ffffff;
}

.section-purple {
  background:
    radial-gradient(circle at top right, rgba(253, 208, 35, 0.18), transparent 34%),
    linear-gradient(135deg, #f7f1ff 0%, #efe3ff 48%, #fff7d6 100%);
}

.section-purple {
  background:
    radial-gradient(circle at top right,
      rgba(253, 208, 35, 0.10),
      transparent 28%),

    linear-gradient(
      135deg,
      #faf8ff 0%,
      #f2e8ff 52%,
      #ffffff 100%
    );

  border-top: 1px solid rgba(70, 29, 124, 0.10);
  border-bottom: 1px solid rgba(70, 29, 124, 0.10);
}

/* Kept for older pages, but no longer used for homepage alternation */
.section-muted {
  background: var(--surface-soft);
  border-block: 1px solid var(--line);
}

/* =========================
   HEADER / NAVIGATION
========================= */

/* .site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  color: var(--lsu-purple);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--lsu-purple), var(--deep-purple));
  color: var(--lsu-gold);
  box-shadow: 0 12px 28px rgba(70, 29, 124, 0.22);
}

.brand-text {
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.8vw, 26px);
  list-style: none;
  margin: 0;
  padding: 0;
  font-weight: 600;
  color: #3b3651;
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--lsu-purple);
}

.nav-toggle {
  display: none;
  border: 0;
  background: var(--lsu-purple);
  color: white;
  border-radius: 10px;
  padding: 8px 11px;
  font-size: 1.2rem;
} */

/* =========================
   HEADER / NAVIGATION
========================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--lsu-purple);
  /* background-color: #120827; */
  background-color: #3D146F;
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  color: white;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--lsu-purple), var(--deep-purple));
  color: var(--lsu-gold);
  box-shadow: 0 12px 28px rgba(70, 29, 124, 0.22);
}

.brand-text {
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.8vw, 26px);
  list-style: none;
  margin: 0;
  padding: 0;
  font-weight: 600;
  color: rgba(255,255,255,0.88);
  /* font-size: 0.95rem; */
  font-size: 1.1rem;
}

.nav-links a:hover {
  color: var(--lsu-gold);
}

.nav-toggle {
  display: none;
  border: 0;
  background: var(--lsu-purple);
  color: white;
  border-radius: 10px;
  padding: 8px 11px;
  font-size: 1.2rem;
}


/* .brand-logo {
  max-height: 74px;
  animation: logoFloat 4s ease-in-out infinite;
}

@keyframes logoFloat {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-4px);
  }
} */

.brand {
  perspective: 1000px;
}

.brand-logo {
  max-height: 74px;
  animation: logoAmbientFlip 10s ease-in-out infinite;
  transform-style: preserve-3d;
}

@keyframes logoAmbientFlip {

  /* Normal drifting */
  0% {
    transform: translate(0px, 0px) rotate(0deg) rotateY(0deg);
  }

  10% {
    transform: translate(1px, -2px) rotate(-0.4deg) rotateY(0deg);
  }

  20% {
    transform: translate(-2px, -3px) rotate(0.3deg) rotateY(0deg);
  }

  30% {
    transform: translate(2px, -1px) rotate(0.5deg) rotateY(0deg);
  }

  40% {
    transform: translate(0px, -4px) rotate(-0.2deg) rotateY(0deg);
  }

  /* Flip section */
  50% {
    transform: translate(0px, -2px) rotate(0deg) rotateY(0deg);
  }

  60% {
    transform: translate(0px, -2px) rotate(0deg) rotateY(180deg);
  }

  70% {
    transform: translate(0px, -2px) rotate(0deg) rotateY(360deg);
  }

  /* Resume drifting */
  80% {
    transform: translate(-1px, -2px) rotate(0.3deg) rotateY(360deg);
  }

  90% {
    transform: translate(2px, -1px) rotate(-0.2deg) rotateY(360deg);
  }

  100% {
    transform: translate(0px, 0px) rotate(0deg) rotateY(360deg);
  }
}

/* =========================
   HERO
========================= */

.hero {
  position: relative;
  overflow: hidden;
  padding: 104px 0 92px;
  background:
    radial-gradient(circle at 78% 18%, rgba(253, 208, 35, 0.34), transparent 28%),
    radial-gradient(circle at 16% 18%, rgba(70, 29, 124, 0.18), transparent 32%),
    linear-gradient(135deg, #ffffff 0%, #faf7ff 48%, #f4edff 100%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -8% -42% 45%;
  height: 520px;
  background: linear-gradient(135deg, rgba(70, 29, 124, 0.12), rgba(253, 208, 35, 0.16));
  transform: rotate(-10deg);
  border-radius: 80px;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 56px;
  align-items: center;
}

.hero-text {
  max-width: 680px;
  margin: 24px 0 0;
  font-size: 1.15rem;
  color: #4f566b;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 34px;
}

.hero-card {
  position: relative;
  padding: 34px;
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow);
}

.hero-card h2 {
  font-size: 1.65rem;
  margin-bottom: 18px;
}

.hero-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.hero-card li {
  padding: 14px 16px;
  border-radius: 16px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  font-weight: 700;
}

.card-ring {
  position: absolute;
  width: 86px;
  height: 86px;
  right: -18px;
  top: -18px;
  border-radius: 999px;
  border: 14px solid var(--lsu-gold);
  opacity: 0.9;
}

/* =========================
   TYPOGRAPHY
========================= */

.eyebrow {
  margin: 0 0 12px;
  color: var(--lsu-purple);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
}

h1,
h2,
h3 {
  line-height: 1.1;
  letter-spacing: -0.04em;
}

h1 {
  margin: 0;
  font-size: clamp(2.7rem, 7vw, 5.3rem);
  color: var(--deep-purple);
}

h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--deep-purple);
}

h3 {
  margin: 0 0 12px;
  font-size: 1.25rem;
  color: var(--lsu-purple);
}

/* =========================
   BUTTONS
========================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 13px 22px;
  font-weight: 800;
  transition: transform .2s ease, box-shadow .2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--lsu-purple);
  color: white;
  box-shadow: 0 16px 34px rgba(70, 29, 124, 0.24);
}

.btn-secondary {
  background: white;
  color: var(--lsu-purple);
  border: 1px solid var(--line);
}

/* =========================
   SHARED SECTION / CARD STYLES
========================= */

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-heading.center {
  text-align: center;
  margin-inline: auto;
}

.section-heading p:not(.eyebrow) {
  color: var(--muted);
  margin-top: 14px;
}

.feature-card,
.sponsor-card,
.contact-card,
.resource-card,
.publication-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 16px 48px rgba(40, 16, 79, 0.08);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 22px;
}

.feature-card {
  padding: 28px;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 54px;
  align-items: center;
}

.split p {
  color: #535b70;
  font-size: 1.06rem;
}

/* =========================
   PRODUCTS
========================= */



/* =========================
   RESOURCES
========================= */

.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: 900px;
  margin: 0 auto;
}

.resource-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 14px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 16px 48px rgba(40, 16, 79, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.resource-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 58px rgba(40, 16, 79, 0.12);
}

.resource-card img {
  width: 100%;
  max-width: 200px;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  border-radius: 12px;
}

.resource-card span {
  color: var(--lsu-purple);
  font-weight: 800;
  font-size: 1.05rem;
}

/* =========================
   PUBLICATIONS
========================= */

.publication-list {
  display: grid;
  gap: 16px;
}

.publication-card {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 22px;
  padding: 24px;
  align-items: start;
}

.publication-card h3 {
  margin-bottom: 8px;
}

.publication-card p {
  margin: 0;
  color: var(--muted);
}

.publication-year {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border-radius: 20px;
  background: var(--surface-soft);
  color: var(--lsu-purple) !important;
  font-weight: 800;
  border: 1px solid var(--line);
}

.publication-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 34px;
}

.pub-filter {
  border: 1px solid var(--line);
  background: white;
  color: var(--lsu-purple);
  border-radius: 999px;
  padding: 10px 16px;
  font-weight: 800;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.pub-filter:hover,
.pub-filter.active {
  background: var(--lsu-purple);
  color: white;
  transform: translateY(-2px);
}

.pub-year-heading {
  font-size: 1.8rem;
  margin: 36px 0 18px;
}

.full-publication-list a {
  color: var(--lsu-purple);
}

.full-publication-list a:hover {
  text-decoration: underline;
}

/* =========================
   SPONSORS / COLLABORATORS
========================= */

.sponsor-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;

  max-width: 1100px;
  margin: 0 auto;
}

.sponsor-card {
  flex: 1 1 160px;

  max-width: 190px;
  min-width: 160px;

  min-height: 120px;

  display: flex;
  align-items: center;
  justify-content: center;

  padding: 20px;

  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;

  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease,
    border-color 0.25s ease;
}
/* for click sponsor cards*/
.sponsor-grid a.sponsor-card {
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  cursor: pointer;
  position: relative;
  z-index: 2;
}

.sponsor-grid a.sponsor-card img {
  pointer-events: none;
}

.sponsor-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 42px rgba(40, 16, 79, 0.12);
  border-color: rgba(70, 29, 124, 0.18);
}

.sponsor-card img {
  max-width: 100%;
  max-height: 72px;
  width: auto;
  height: auto;
  object-fit: contain;

  opacity: 1;

  transition:
    transform 0.25s ease,
    opacity 0.25s ease;
}

.sponsor-card:hover img {
  transform: scale(1.07);
}

.sponsor-card:hover img {
  filter: grayscale(0%);
  opacity: 1;
  transform: scale(1.04);
}

.logo-wrap {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-wrap img {
  max-width: 100%;
  max-height: 72px;
  object-fit: contain;
}

/* old split layout removed */
.sponsor-split {
  display: block;
}

/* =========================
   CONTACT
========================= */

.contact-section {
  padding-top: 20px;
}

.contact-card {
  padding: 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: linear-gradient(135deg, var(--deep-purple), var(--lsu-purple));
  color: white;
}

.contact-card h2,
.contact-card .eyebrow {
  color: white;
}

.contact-card p {
  margin-bottom: 0;
  color: rgba(255,255,255,.82);
}

.contact-card .btn-primary {
  background: var(--lsu-gold);
  color: var(--deep-purple);
  box-shadow: none;
  white-space: nowrap;
}

/* =========================
   FOOTER
========================= */

.footer {
  padding: 28px 0;
  background: #120827;
  color: rgba(255,255,255,.82);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.footer p {
  margin: 0;
}

/* =========================
   PEOPLE SECTION
========================= */

.people-section .section-heading {
  max-width: 820px;
}

.group-photo-card {
  margin: 0 auto 34px;
  max-width: 980px;
  overflow: hidden;
  border-radius: 30px;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.group-photo-card img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/*
.group-photo-card figcaption {
  padding: 14px 20px;
  color: var(--muted);
  font-weight: 700;
  text-align: center;
}
*/

.people-options {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.people-option-card {
  min-height: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 22px;
  border-radius: 999px;
  background: var(--lsu-purple);
  color: white;
  font-weight: 800;
  box-shadow: 0 16px 34px rgba(70, 29, 124, 0.24);
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.people-option-card:hover {
  background: #5e2ca5;
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(70, 29, 124, 0.35);
}

.people-option-card span:first-child {
  line-height: 1.25;
}

.people-option-card span:last-child {
  color: white;
  font-size: 1rem;
  line-height: 1;
  opacity: 1;
  transition: transform 0.2s ease;
}

.people-option-card:hover span:last-child {
  transform: translateX(4px);
}

/* =========================
   CHAIR PROFILE
========================= */

.chair-profile-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 34px;
  align-items: start;
}

.chair-photo {
  width: 100%;
  max-width: 475px;
  display: block;
  margin: 34px 0 22px;
}

.chair-profile-grid h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  margin-bottom: 0;
}

.chair-profile-grid h2 {
  font-size: 1.6rem;
  margin: 26px 0 14px;
}

.chair-profile-grid ul {
  padding-left: 20px;
}

/* =========================
   STUDENT CARDS
========================= */

.student-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 28px;
}

.student-card {
  width: 100%;
  max-width: 320px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 16px 48px rgba(40, 16, 79, 0.08);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 24px 20px;
}

.student-card img {
  width: 160px;
  height: 160px;
  object-fit: cover;
  object-position: center;
  border-radius: 50%;
  display: block;
  margin-bottom: 16px;
}

.student-card div {
  padding: 0;
}

.student-card h3 {
  margin-bottom: 6px;
}

.student-card p {
  margin: 0 0 6px;
  color: var(--muted);
}

.student-card p:last-child {
  margin-bottom: 0;
}

/* =========================
   ALUMNI
========================= */

.alumni-hero-photo {
  margin: 0 auto 34px;
  max-width: 900px;
  overflow: hidden;
  border-radius: 30px;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.alumni-hero-photo img {
  display: block;
  width: 100%;
  max-height: 520px;
  object-fit: cover;
}

.alumni-hero-photo figcaption {
  padding: 16px 22px;
  color: var(--muted);
  font-weight: 700;
  text-align: center;
}

.alumni-dropdowns {
  display: grid;
  gap: 16px;
  max-width: 900px;
  margin: 0 auto;
}

.alumni-dropdown {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: 0 16px 48px rgba(40, 16, 79, 0.08);
  overflow: hidden;
}

.alumni-dropdown summary {
  cursor: pointer;
  padding: 20px 24px;
  color: var(--lsu-purple);
  font-weight: 800;
  list-style: none;
}

.alumni-dropdown summary::-webkit-details-marker {
  display: none;
}

.alumni-dropdown summary::after {
  content: "+";
  float: right;
  color: var(--lsu-gold);
  font-size: 1.4rem;
  line-height: 1;
}

.alumni-dropdown[open] summary::after {
  content: "–";
}

.alumni-dropdown-content {
  padding: 0 24px 22px;
  color: var(--muted);
}

.alumni-list {
  padding-left: 18px;
  display: grid;
  gap: 12px;
}

.alumni-list li {
  line-height: 1.5;
}

.alumni-list a {
  color: var(--lsu-purple);
  font-weight: 600;
}

/* =========================
   EMPTY STATE
========================= */

.empty-state {
  text-align: center;
  padding: 80px 20px;
  max-width: 600px;
  margin: 0 auto;
}

.empty-icon {
  font-size: 3.5rem;
  margin-bottom: 16px;
  animation: float 2.5s ease-in-out infinite;
}

.empty-state h2 {
  margin-bottom: 10px;
  color: var(--lsu-purple);
}

.empty-state p {
  color: var(--muted);
  font-size: 1.05rem;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* =========================
   HOME SLIDESHOW
========================= */

.home-slideshow {
  width: 100%;
  aspect-ratio: 2 / 1;
  max-height: 520px;
  min-height: 320px;
  overflow: hidden;
  position: relative;
  margin: 0;
  background: #fff;
}

.slideshow {
  position: relative;
  width: 100%;
  height: 100%;
}

.slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  /* object-fit: contain;
  object-position: center center; */
  object-fit: cover;
  object-position: center;
  background: #fff;
  opacity: 0;
  transition: opacity 1s ease;
}

.slide.active {
  opacity: 1;
}

.home-slideshow::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(255,255,255,0),
    rgba(255,255,255,0.15)
  );
  pointer-events: none;
}

/* =========================
   WELCOME SECTION
========================= */

.welcome-section {
  padding-top: 48px;
}

.welcome-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}

.welcome-image-card {
  margin: 0;
  overflow: hidden;
  border-radius: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.welcome-image-card img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.welcome-caption {
  text-align: center;
  padding: 12px 16px 16px;
}

/* =========================
   RESPONSIVE
========================= */

@media (max-width: 1040px) {
  .people-options {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 840px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    inset: 76px 20px auto 20px;
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
    border-radius: 20px;
    background: white;
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    display: none;
  }

  .nav-links.open {
    display: flex;
  }

  .hero-grid,
  .feature-grid,
  .split,
  .sponsor-grid,
  .resource-grid {
    grid-template-columns: 1fr;
  }

  .publication-card {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 72px;
  }

  .contact-card {
    align-items: flex-start;
    flex-direction: column;
  }

  .sponsor-split {
    grid-template-columns: 1fr;
  }

  .resource-grid {
    grid-template-columns: 1fr;
  }

  .chair-profile-grid {
    grid-template-columns: 1fr;
  }

  .student-grid {
    grid-template-columns: 1fr;
  }

  .home-slideshow {
    aspect-ratio: 16 / 9;
    min-height: 220px;
    max-height: 320px;
  }

  .welcome-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .welcome-section {
    padding-top: 40px;
  }
}

@media (max-width: 620px) {
  .people-options {
    grid-template-columns: 1fr;
  }

  .group-photo-card img {
    aspect-ratio: 4 / 3;
  }
}


.about-pse-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr; /* image slightly larger */
  align-items: center;
  gap: 4rem;
}

/* 👇 Flip layout (image left, text right) */
.about-pse-image {
  order: 1;
}

.about-pse-content {
  order: 2;
  max-width: 560px;
}

/* Typography */
.about-pse-content h2 {
  margin-bottom: 1.25rem;
  font-size: clamp(2.25rem, 5vw, 4rem);
  line-height: 1.05;
  color: #26005d;
}

.about-pse-content p:not(.eyebrow) {
  max-width: 500px;
  margin-bottom: 2rem;
  font-size: 1.05rem;
  line-height: 1.75;
  color: #333;
}

/* Image styling */
.about-pse-image {
  display: flex;
  justify-content: flex-start; /* aligns nicely with text */
  align-items: center;
  padding: 0;                 /* remove card spacing */
  background: none;           /* ❌ remove white card */
  box-shadow: none;           /* ❌ remove blur/glow */
  border-radius: 0;           /* remove rounded box look */
}

.about-pse-image img {
  width: 100%;
  max-width: 600px;
  height: auto;
  display: block;

  /* optional: crisp subtle shadow instead of blur */
  filter: drop-shadow(0 8px 20px rgba(0, 0, 0, 0.15));
}

/* Button */
.btn-primary {
  display: inline-block;
  background: #461d7c;
  color: #fff;
  padding: 0.9rem 1.7rem;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 14px 30px rgba(70, 29, 124, 0.25);
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.btn-primary:hover {
  background: #5e2ca5;
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(70, 29, 124, 0.35);
}

/* Mobile */
@media (max-width: 900px) {
  .about-pse-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  /* 👇 Show text first on mobile */
  .about-pse-content {
    order: 1;
    max-width: 100%;
  }

  .about-pse-image {
    order: 2;
    padding: 1.5rem;
  }
}

/* =========================
   Brand Logo (for header)
========================= */

.brand-logo {
  max-height: 100px;
  width: auto;
  height: auto;
  display: block;
}


/* =========================
   PRODUCTS CAROUSEL (UPDATED)
========================= */

.product-carousel {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
}

/* SCROLL TRACK (unchanged behavior) */
.product-track {
  display: flex;
  gap: 28px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 10px 4px 28px;
  scrollbar-width: none;
}

.product-track::-webkit-scrollbar {
  display: none;
}

/* =========================
   PRODUCT CARD (NEW STYLE)
========================= */

.product-card {
  flex: 0 0 calc((100% - 56px) / 3);
  scroll-snap-align: start;

  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;

  background: transparent; /* 🔥 remove square background */
  border: none;
  box-shadow: none;

  padding: 10px;
  text-decoration: none;

  transition: transform 0.2s ease;
}

/* Hover like resource cards */
.product-card:hover {
  transform: translateY(-4px);
  cursor: pointer;
}

/* =========================
   IMAGE (RESOURCE STYLE)
========================= */

.product-card img {
  width: 100%;
  max-width: 200px;
  aspect-ratio: 2 / 3;
  object-fit: contain;

  border-radius: 12px;
  margin-bottom: 12px;

  background: none; /* 🔥 removes white square */
  padding: 0;
}

/* =========================
   TEXT
========================= */

.product-card-body {
  padding: 0;
}

.product-card h3 {
  color: var(--lsu-purple);
  font-weight: 800;
  margin-bottom: 6px;
}

.product-card p {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0;
}

/* =========================
   ARROWS (UNCHANGED)
========================= */

.product-arrow {
  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 50%;
  background: var(--lsu-purple);
  color: white;
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 14px 30px rgba(70, 29, 124, 0.24);
  transition: transform 0.2s ease, background 0.2s ease;
}

.product-arrow:hover {
  background: var(--deep-purple);
  transform: translateY(-2px);
}

/* =========================
   DOTS (UNCHANGED)
========================= */

.product-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 6px;
}

.product-dot {
  width: 10px;
  height: 10px;
  border: 0;
  border-radius: 999px;
  background: rgba(70, 29, 124, 0.25);
  cursor: pointer;
  transition: width 0.25s ease, background 0.25s ease;
}

.product-dot.active {
  width: 28px;
  background: var(--lsu-purple);
}

/* =========================
   RESPONSIVE
========================= */

@media (max-width: 900px) {
  .product-card {
    flex-basis: 78%;
  }
}

@media (max-width: 620px) {
  .product-carousel {
    grid-template-columns: 1fr;
  }

  .product-arrow {
    display: none;
  }

  .product-card {
    flex-basis: 88%;
  }
}


/* =========================
   Control Textbook
========================= */
.control-hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
  margin-top: 42px;
}

.control-hero-copy p:not(.eyebrow):not(.hero-text) {
  max-width: 720px;
  color: #4f566b;
  font-size: 1.06rem;
}

.control-book-card {
  padding: 0;
  background: none;
  border: none;
  box-shadow: none;
}

.control-book-card img {
  width: 100%;
  display: block;
  border-radius: 16px;

  /* NEW border styling */
  border: 2px solid rgba(70, 29, 124, 0.2);
  box-shadow: 0 18px 40px rgba(40, 16, 79, 0.18);
}

.control-sections {
  display: grid;
  gap: 24px;
}

.control-section-card {
  padding: 34px;
}

.control-section-card h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: 20px;
}

.control-section-card ul {
  margin: 0;
  padding-left: 22px;
  color: #4f566b;
}

.control-section-card li {
  margin-bottom: 14px;
}

.control-section-card p {
  color: #4f566b;
}

.control-section-card a {
  color: var(--lsu-purple);
  font-weight: 700;
}

.control-section-card a:hover {
  text-decoration: underline;
}

.control-links-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 34px;
  align-items: center;
}

.control-links-grid img {
  width: 100%;
  border-radius: 16px;
  box-shadow: 0 16px 40px rgba(40, 16, 79, 0.14);
}

@media (max-width: 840px) {
  .control-hero,
  .control-links-grid {
    grid-template-columns: 1fr;
  }

  .control-book-card img,
  .control-links-grid img {
    max-width: 320px;
    margin: 0 auto;
  }
}

/* =========================
   RESEARCH CARDS (Animated)
========================= */

.research-card {
  padding: 28px;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  text-align: center;
}

.research-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 64px rgba(40, 16, 79, 0.16);
  border-color: rgba(70, 29, 124, 0.28);
}

.research-icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;

  margin: 0 auto 18px auto; /* 🔥 centers horizontally */

  border-radius: 18px;
  background: var(--surface-soft);
  border: 1px solid var(--line);

  transition: transform 0.25s ease, background 0.25s ease;
}

.research-card:hover .research-icon {
  transform: scale(1.08);
  background: #efe6ff;
}

/* Lucide icon sizing */
.research-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--lsu-purple);
  stroke-width: 2.2;
}

/* =========================
   RESEARCH DETAIL PAGES
========================= */

.research-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.research-detail-grid.reverse .research-detail-image {
  order: 2;
}

.research-detail-grid.reverse .research-detail-content {
  order: 1;
}

/* .research-detail-image {
  display: grid;
  gap: 20px;
  overflow: hidden;
  border-radius: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 20px;
} */

.research-detail-image {
  display: grid;
  gap: 20px;
}

.research-detail-img-card {
  overflow: hidden;
  border-radius: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 20px;
}

.research-detail-img-card img {
  width: 100%;
  height: auto;
  object-fit: contain;
  display: block;
}

.research-detail-image img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

.research-detail-content p:not(.eyebrow) {
  color: var(--muted);
  font-size: 1.06rem;
}

.research-detail-img-card video {
  width: 100%;
  height: auto;
  display: block;
}

@media (max-width: 840px) {
  .research-detail-grid {
    grid-template-columns: 1fr;
  }

  .research-detail-grid.reverse .research-detail-image,
  .research-detail-grid.reverse .research-detail-content {
    order: initial;
  }
}

.research-video-section {
  display: flex;
  justify-content: center;
}

.research-video-card {
  width: 100%;
  max-width: 1000px;
  overflow: hidden;
  border-radius: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 20px;
}

.research-video-card video {
  width: 100%;
  height: auto;
  display: block;
}

/* =========================
   RESEARCH HOME VIDEO
========================= */

.research-home-video-card {
  width: 100%;
  max-width: 950px;
  margin: 0 auto 42px;
  overflow: hidden;
  border-radius: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 16px;
}

.research-home-video-card video {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 20px;
}