/* ===== Google Fonts ===== */
@import url('https://fonts.googleapis.com/css2?family=Lato:wght@300;400;700&family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

/* ===== Variables ===== */
:root {
  /* Brand — Okayama deep teal kept as identity */
  --accent: #0a4d6b;
  --accent-light: #0d6b94;
  --accent-hover: #073a52;
  --accent-deep: #062c3f;

  /* Vibrant secondary — modern cyan for highlights, gradients, glow */
  --accent-2: #00b8d4;
  --accent-2-light: #4dd5e8;
  --accent-2-glow: rgba(0, 184, 212, 0.35);

  /* Surface */
  --nav-bg: #0a1929;
  --nav-hover: #14253a;
  --footer-bg: #0a1929;
  --bg-section: #f1f6fb;
  --bg-section-2: #eaf2f9;
  --white: #ffffff;
  --border: #dbe4ed;

  /* Text */
  --text: #1a2332;
  --text-light: #5a6878;

  /* Hero & overlays */
  --hero-overlay: linear-gradient(135deg, rgba(8, 28, 52, 0.78) 0%, rgba(0, 92, 124, 0.55) 55%, rgba(0, 184, 212, 0.35) 100%);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #0a4d6b 0%, #00b8d4 100%);
  --gradient-accent: linear-gradient(135deg, #00b8d4 0%, #6366f1 100%);
  --gradient-stats: linear-gradient(135deg, #0a4d6b 0%, #0d6b94 50%, #00b8d4 100%);

  /* Shadows */
  --card-shadow: 0 4px 20px rgba(10, 30, 50, 0.07);
  --card-shadow-hover: 0 18px 42px rgba(10, 77, 107, 0.18);

  --transition: 0.25s ease;
}

/* ===== Bilingual toggle ===== */
html[lang="en"] .lang-ja {
  display: none !important;
}

html[lang="ja"] .lang-en {
  display: none !important;
}

.lang-toggle {
  background: rgba(255, 255, 255, 0.13);
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: rgba(255, 255, 255, 0.9);
  border-radius: 0;
  padding: 3px 11px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
  margin-left: 0.6rem;
  transition: background var(--transition);
  flex-shrink: 0;
}

.lang-toggle:hover {
  background: rgba(255, 255, 255, 0.25);
  color: #fff;
}

/* ===== Reset & Base ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Lato', 'Noto Sans JP', sans-serif;
  color: var(--text);
  font-size: 16px;
  line-height: 1.7;
  background: var(--white);
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

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

img {
  max-width: 100%;
  display: block;
}

h1,
h2,
h3,
h4,
h5 {
  line-height: 1.3;
  font-weight: 700;
}

/* ===== Utilities ===== */
.section-title {
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
  margin-bottom: 0.4rem;
  position: relative;
  padding-bottom: 0.55rem;
}

.section-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 56px;
  height: 4px;
  border-radius: 0;
  background: var(--gradient-accent);
}

.section-subtitle {
  color: var(--text-light);
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  margin-bottom: 2.2rem;
  text-transform: uppercase;
}

.section-padding {
  padding: 70px 0;
}

.bg-section {
  background: var(--bg-section);
}

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
}

.btn {
  display: inline-block;
  padding: 0.72rem 1.8rem;
  border-radius: 0;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  cursor: pointer;
  border: none;
  position: relative;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: 0 6px 18px rgba(0, 184, 212, 0.35), 0 2px 6px rgba(10, 77, 107, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 184, 212, 0.45), 0 4px 10px rgba(10, 77, 107, 0.3);
  color: var(--white);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
  border: 1.5px solid rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.btn-outline:hover {
  background: var(--white);
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
}

/* ===== Navigation ===== */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 25, 41, 0.85);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04), 0 6px 24px rgba(0, 0, 0, 0.18);
  transition: background var(--transition), box-shadow var(--transition);
}

#navbar::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--gradient-accent);
  opacity: 0.9;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  height: 64px;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
  gap: 0;
}

.nav-brand {
  margin-right: auto;
}

.nav-brand {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 10px;
  line-height: 1.2;
}

.nav-brand .nav-logo {
  height: 60px;
  width: 60px;
  object-fit: contain;
  flex-shrink: 0;
  filter: brightness(1.4) drop-shadow(0 0 6px rgba(0, 184, 212, 0.35));
}

.nav-brand-text {
  display: flex;
  flex-direction: column;
}

.nav-brand .brand-ja {
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.nav-brand .brand-en {
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.65rem;
  font-weight: 300;
  letter-spacing: 0.08em;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 0;
  align-items: center;
}

.nav-menu li a {
  display: block;
  padding: 0.5rem 0.85rem;
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: color var(--transition), background var(--transition);
  border-bottom: 3px solid transparent;
}

.nav-menu li a:hover,
.nav-menu li a.active {
  color: var(--white);
  border-bottom-color: var(--accent-2);
  background: rgba(0, 184, 212, 0.10);
}

.nav-menu .nav-lang {
  margin-left: 0.4rem;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 0;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: all var(--transition);
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Hero ===== */
#hero {
  position: relative;
  height: 100vh;
  min-height: 680px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--white);
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  z-index: 0;
}

.hero-grid-bg>div {
  background-size: 100%;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-grid-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--hero-overlay);
}

#hero::after {
  content: '';
  position: absolute;
  inset: auto 0 0 0;
  height: 60px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.85) 100%);
  z-index: 1;
  pointer-events: none;
}

#hero {
  overflow: hidden;
}

#hero .hero-content {
  z-index: 2;
}


.hero-content {
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

.hero-univ {
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  font-weight: 300;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.9;
  margin-bottom: 1rem;
}

.hero-title-ja {
  font-size: clamp(1.9rem, 5.2vw, 3.2rem);
  font-weight: 700;
  margin-bottom: 0.4rem;
  letter-spacing: 0.01em;
  text-shadow: 0 4px 30px rgba(0, 184, 212, 0.35), 0 2px 8px rgba(0, 0, 0, 0.4);
}

.hero-title-en {
  font-size: clamp(0.85rem, 2vw, 1.1rem);
  font-weight: 300;
  letter-spacing: 0.12em;
  opacity: 0.78;
  margin-bottom: 1.5rem;
}

.hero-tagline {
  font-size: clamp(1.1rem, 2.8vw, 1.6rem);
  font-weight: 400;
  opacity: 0.95;
  margin-bottom: 2.2rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  opacity: 0.55;
  animation: bounce 1.8s infinite;
}

.hero-scroll span {
  display: block;
  width: 20px;
  height: 20px;
  border-right: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(45deg);
  margin: -10px auto 0;
}

@keyframes bounce {

  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }

  50% {
    transform: translateX(-50%) translateY(8px);
  }
}

/* ===== Research Cards ===== */
.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.research-card {
  background: var(--white);
  border-radius: 0;
  overflow: hidden;
  box-shadow: var(--card-shadow);
  border: 1px solid rgba(10, 77, 107, 0.06);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
}

.research-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
  z-index: 2;
}

.research-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--card-shadow-hover);
  border-color: rgba(0, 184, 212, 0.25);
}

.research-card:hover::before {
  transform: scaleX(1);
}

.research-card:hover .research-card-img {
  transform: scale(1.05);
}

.research-card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 3rem;
  transition: transform 0.5s ease;
}

.research-card-img-wrap {
  overflow: hidden;
}

.research-card-body {
  padding: 1.2rem 1.4rem 1.4rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.research-card-tag {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  background: linear-gradient(135deg, rgba(0, 184, 212, 0.12), rgba(99, 102, 241, 0.10));
  padding: 0.25rem 0.7rem;
  border-radius: 0;
  margin-bottom: 0.6rem;
}

.research-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.research-card p {
  font-size: 0.875rem;
  color: var(--text-light);
  flex: 1;
}

.research-card .card-link {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
}

.research-card .card-link:hover {
  color: var(--accent-light);
}

/* ===== News Section ===== */
.news-list {
  list-style: none;
}

.news-list li {
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
  padding: 1.1rem 0.4rem;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), padding var(--transition);
  border-radius: 0;
}

.news-list li:hover {
  background: rgba(0, 184, 212, 0.04);
  padding-left: 0.8rem;
}

.news-list li:last-child {
  border-bottom: none;
}

.news-date {
  flex-shrink: 0;
  font-size: 0.82rem;
  color: var(--text-light);
  min-width: 90px;
  padding-top: 2px;
}

.news-tag {
  flex-shrink: 0;
  display: inline-block;
  padding: 3px 10px;
  border-radius: 0;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: 0 2px 8px rgba(0, 184, 212, 0.25);
}

.news-tag.award {
  background: linear-gradient(135deg, #ef4444, #f59e0b);
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}

.news-tag.event {
  background: linear-gradient(135deg, #10b981, #06b6d4);
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.news-body {
  flex: 1;
}

.news-body a {
  color: var(--text);
  font-size: 0.9rem;
}

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

/* ===== Members Page ===== */
.faculty-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.8rem;
  margin-bottom: 3rem;
}

.faculty-card {
  background: var(--white);
  border-radius: 0;
  box-shadow: var(--card-shadow);
  text-align: center;
  padding: 2rem 1.5rem 1.5rem;
  transition: transform var(--transition);
}

.faculty-card:hover {
  transform: translateY(-3px);
}

.faculty-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 1rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 2.2rem;
}

.faculty-name-ja {
  font-size: 1.05rem;
  font-weight: 700;
  display: block;
  color: var(--text);
  text-decoration: none;
}

.faculty-name-ja:hover {
  color: var(--accent);
}

.faculty-name-en {
  font-size: 0.8rem;
  color: var(--text-light);
  margin-bottom: 0.3rem;
  display: block;
  text-decoration: none;
}

.faculty-name-en:hover {
  color: var(--accent);
}

.faculty-role {
  display: inline-block;
  padding: 2px 10px;
  background: var(--accent);
  color: var(--white);
  border-radius: 0;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 0.8rem;
}

.faculty-card p {
  font-size: 0.82rem;
  color: var(--text-light);
}

.faculty-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 3px 10px;
  border: 1px solid var(--accent);
  border-radius: 0;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent);
  transition: background var(--transition), color var(--transition);
}

.faculty-link:hover {
  background: var(--accent);
  color: var(--white);
}

.student-table-wrap {
  overflow-x: auto;
  margin-bottom: 2.5rem;
}

.student-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.student-table th {
  background: var(--nav-bg);
  color: var(--white);
  padding: 0.7rem 1rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}

.student-table td {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border);
}

.student-table tbody tr:hover {
  background: var(--bg-section);
}

.student-table .topic-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 0;
  font-size: 0.75rem;
  background: rgba(0, 76, 102, 0.1);
  color: var(--accent);
  font-weight: 600;
}

.grade-label {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  margin: 1.8rem 0 0.6rem;
  padding-bottom: 0.3rem;
  border-bottom: 2px solid var(--accent);
}

/* ===== Research Detail ===== */
.research-section {
  padding: 60px 0;
  border-bottom: 1px solid var(--border);
}

.research-section:last-child {
  border-bottom: none;
}

.research-section:nth-child(even) {
  background: var(--bg-section);
}

.research-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

.research-detail-grid.reverse {
  direction: rtl;
}

.research-detail-grid.reverse>* {
  direction: ltr;
}

.research-number {
  font-size: 4rem;
  font-weight: 700;
  color: rgba(0, 76, 102, 0.12);
  line-height: 1;
  margin-bottom: -0.5rem;
}

.research-title-ja {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
}

.research-title-en {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 1rem;
}

.research-desc {
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text-light);
}

.video-wrap {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: 0;
  box-shadow: var(--card-shadow);
}

.video-wrap iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* ===== Publications ===== */
.year-block {
  margin-bottom: 3rem;
}

.year-heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  background: var(--accent);
  display: inline-block;
  padding: 0.2rem 1.2rem;
  border-radius: 0;
  margin-bottom: 1rem;
}

.award-list {
  list-style: none;
}

.award-list li {
  display: flex;
  gap: 1rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
  font-size: 0.9rem;
}

.award-list li:last-child {
  border-bottom: none;
}

.award-icon {
  color: #c0392b;
  flex-shrink: 0;
  margin-top: 2px;
}

.award-text {
  flex: 1;
  line-height: 1.6;
}

.award-person {
  font-weight: 700;
  color: var(--accent);
  margin-right: 0.3rem;
}

/* ===== Access ===== */
.map-wrap {
  border-radius: 0;
  overflow: hidden;
  box-shadow: var(--card-shadow);
  margin-bottom: 2rem;
}

.access-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.access-card {
  background: var(--white);
  border-radius: 0;
  padding: 1.5rem;
  box-shadow: var(--card-shadow);
}

.access-card h4 {
  color: var(--accent);
  font-size: 1rem;
  margin-bottom: 0.8rem;
}

.access-card p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.8;
}

/* ===== Links Page ===== */
.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.link-item {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1rem 1.2rem;
  background: var(--white);
  border-radius: 0;
  box-shadow: var(--card-shadow);
  transition: transform var(--transition);
  font-size: 0.88rem;
}

.link-item:hover {
  transform: translateX(4px);
  color: var(--accent);
}

.link-item i {
  color: var(--accent);
  font-size: 1rem;
}

/* ===== Footer ===== */
#footer {
  background: linear-gradient(180deg, #0a1929 0%, #061421 100%);
  color: rgba(255, 255, 255, 0.75);
  padding: 60px 0 24px;
  position: relative;
}

#footer::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--gradient-accent);
  opacity: 0.7;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-brand .brand-ja {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.4rem;
}

.footer-brand p {
  font-size: 0.8rem;
  line-height: 1.7;
}

.footer-col h5 {
  color: var(--white);
  font-size: 0.85rem;
  margin-bottom: 0.8rem;
  letter-spacing: 0.06em;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.8rem;
  display: block;
  padding: 3px 0;
  transition: color var(--transition);
}

.footer-col ul li a:hover {
  color: var(--white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 1rem;
  text-align: center;
  font-size: 0.75rem;
  opacity: 0.6;
}

/* ===== Page Header Banner ===== */
.page-header {
  background: linear-gradient(135deg, #0a1929 0%, var(--accent) 45%, var(--accent-2) 110%);
  color: var(--white);
  padding: 110px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 30%, rgba(0, 184, 212, 0.25), transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(99, 102, 241, 0.22), transparent 45%);
  pointer-events: none;
}

.page-header > * {
  position: relative;
  z-index: 1;
}

.page-header h1 {
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  margin-bottom: 0.3rem;
}

.page-header p {
  opacity: 0.8;
  font-size: 0.95rem;
  font-weight: 300;
  letter-spacing: 0.06em;
}

/* ===== Fade-in animation ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .research-detail-grid {
    grid-template-columns: 1fr;
  }

  .research-detail-grid.reverse {
    direction: ltr;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav-menu {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--nav-bg);
    padding: 1rem 0;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    gap: 0;
  }

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

  .nav-menu li a {
    padding: 0.75rem 1.5rem;
    border-bottom: none;
    border-left: 3px solid transparent;
  }

  .nav-menu li a:hover,
  .nav-menu li a.active {
    border-bottom: none;
    border-left-color: var(--accent-light);
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .section-padding {
    padding: 50px 0;
  }

  .page-header {
    padding: 90px 0 40px;
  }
}

@media (max-width: 480px) {
  .faculty-grid {
    grid-template-columns: 1fr 1fr;
  }

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