/* ==========================================================================
   横浜市立大学 医学部 組織学研究室 (Histology and Cell Biology)
   Official Website Stylesheet (finemorp2026)
   ========================================================================== */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Noto+Sans+JP:wght@400;500;600;700&family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap');

/* --- Root Variables & Theme Tokens --- */
:root {
  /* Color Palette - Fresh, Intelligent, Scientific */
  --color-primary: #0284c7;       /* Sky-Blue / Biotech Blue */
  --color-primary-dark: #0369a1;  /* Deep Sky */
  --color-primary-light: #e0f2fe; /* Pale Sky Tint */
  --color-secondary: #0f172a;     /* Deep Slate Navy */
  --color-accent: #059669;        /* Mint / Emerald Accent */
  --color-accent-light: #ecfdf5;  /* Pale Mint Tint */
  --color-accent-blue: #2563eb;   /* Sapphire Blue */
  
  /* Neutral Tones */
  --color-bg: #f8fafc;
  --color-bg-white: #ffffff;
  --color-bg-card: rgba(255, 255, 255, 0.95);
  --color-bg-subtle: #f1f5f9;
  --color-text-main: #1e293b;
  --color-text-muted: #64748b;
  --color-text-light: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;

  /* Typography */
  --font-base: 'Noto Sans JP', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-en: 'Plus Jakarta Sans', 'Inter', sans-serif;

  /* Elevation Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 30px -10px rgba(2, 132, 199, 0.12);
  --shadow-glow: 0 0 25px rgba(2, 132, 199, 0.25);

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Layout */
  --max-width: 1200px;
  --header-height: 76px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-base);
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-text-main);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

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

a:hover {
  color: var(--color-primary-dark);
}

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

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Section Headers --- */
.section {
  padding: 90px 0;
  position: relative;
}

.section.alt-bg {
  background: linear-gradient(180deg, #f8fafc 0%, #edf4f9 100%);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-family: var(--font-en);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-secondary);
  line-height: 1.3;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.section-lead {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* --- Top Announcement / Utility Bar --- */
.top-utility-bar {
  background-color: var(--color-secondary);
  color: #cbd5e1;
  font-size: 0.8rem;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.utility-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.utility-text {
  display: flex;
  align-items: center;
  gap: 8px;
  opacity: 0.9;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(255, 255, 255, 0.12);
  padding: 3px 6px;
  border-radius: var(--radius-full);
}

.lang-btn {
  color: #94a3b8;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.lang-btn.active {
  background-color: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.lang-btn:hover:not(.active) {
  color: #ffffff;
}

/* --- Sticky Header / Navbar --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow-md);
}

.navbar {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 14px;
}


.brand-logo-full {
  height: 54px;
  width: auto;
  max-width: 100%;
  display: block;
  object-fit: contain;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.brand-link:hover .brand-logo-full {
  opacity: 0.92;
  transform: scale(1.02);
}

@media (max-width: 768px) {
  .brand-logo-full {
    height: 42px;
  }
}

.brand-emblem {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.12);
  border: 1px solid rgba(226, 232, 240, 0.9);
  background: #ffffff;
  flex-shrink: 0;
  padding: 2px;
  transition: transform var(--transition-fast);
}

.brand-link:hover .brand-emblem {
  transform: rotate(15deg) scale(1.06);
}

.brand-logo {
  height: 56px;
  width: auto;
  border-radius: 8px;
  object-fit: contain;
  transition: transform var(--transition-fast);
}

.brand-link:hover .brand-logo {
  transform: scale(1.03);
}

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

.brand-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-secondary);
  line-height: 1.25;
}

.brand-subtitle {
  font-family: var(--font-en);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-family: var(--font-en);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-secondary);
  position: relative;
  padding: 6px 0;
  letter-spacing: 0.02em;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2.5px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 2px;
  transition: width var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent-blue));
  color: #ffffff !important;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.28);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-cta:hover {
  transform: translateY(-1.5px);
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.4);
}

.hamburger-btn {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background-color: #ffffff;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  z-index: 1001;
}

.hamburger-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-secondary);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* --- Hero Slider Section (Billboard) --- */
.hero-slider-section {
  position: relative;
  background: #091522;
  overflow: hidden;
}

.slider-container {
  position: relative;
  width: 100%;
  height: 480px;
  max-width: 1400px;
  margin: 0 auto;
}

.slider-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
}

.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.8s ease, transform 1.2s cubic-bezier(0.1, 0.9, 0.2, 1);
  transform: scale(1.04);
}

.slide.active {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

.slide-media {
  width: 100%;
  height: 100%;
  position: relative;
}

.slide-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.slide-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(9, 21, 34, 0.15) 0%, rgba(9, 21, 34, 0.75) 100%);
}

.slide-caption-wrapper {
  position: absolute;
  bottom: 40px;
  left: 0;
  right: 0;
  z-index: 5;
}

.slide-caption-card {
  width: fit-content;
  max-width: min(860px, 92%);
  background: rgba(15, 23, 42, 0.78);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 16px 28px;
  color: #ffffff;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.slide-tag {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 700;
  color: #38bdf8;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.slide-title {
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: 0.02em;
}

/* Slider Controls */
.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.85);
  color: var(--color-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(8px);
  transition: all var(--transition-fast);
}

.slider-arrow:hover {
  background: #ffffff;
  color: var(--color-primary);
  transform: translateY(-50%) scale(1.08);
}

.slider-arrow.prev { left: 24px; }
.slider-arrow.next { right: 24px; }

.slider-dots {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  gap: 8px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.dot.active {
  width: 28px;
  border-radius: var(--radius-full);
  background: #38bdf8;
}

/* --- Research / Works Section (Tabs & Detail Cards) --- */
.research-tabs-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 40px;
}

.tab-btn {
  padding: 12px 22px;
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text-muted);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}

.tab-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.tab-btn.active {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.28);
}

.tab-pane {
  display: none;
  animation: fadeIn 0.4s ease;
}

.tab-pane.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.research-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  padding: 36px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.research-card.has-media {
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
}

.research-content h3 {
  font-size: 1.55rem;
  font-weight: 700;
  color: var(--color-secondary);
  line-height: 1.35;
  margin-bottom: 18px;
}

.research-text {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--color-text-main);
  margin-bottom: 20px;
}

.research-highlights {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
  border-top: 1px solid var(--color-border-light);
  padding-top: 20px;
}

.highlight-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--color-text-main);
}

.highlight-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-accent-light);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: bold;
}

.research-media {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background-color: #f8fafc;
  border: 1px solid var(--color-border);
  position: relative;
  transition: transform var(--transition-normal);
}

.research-media:hover {
  transform: scale(1.02);
}

.research-media img {
  width: 100%;
  height: auto;
  display: block;
}

.media-caption {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  padding: 10px 14px;
  background: #ffffff;
  border-top: 1px solid var(--color-border-light);
  text-align: center;
}

/* --- Publications Section --- */
.publications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 24px;
}

.paper-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  position: relative;
}

.paper-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: #bae6fd;
}

.paper-thumb-wrapper {
  position: relative;
  width: 100%;
  height: 190px;
  background: #f1f5f9;
  overflow: hidden;
}

.paper-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  transition: transform 0.6s ease;
}

.paper-card:hover .paper-thumb {
  transform: scale(1.06);
}

.paper-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
  letter-spacing: 0.04em;
  z-index: 2;
}

.paper-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.paper-journal {
  font-family: var(--font-en);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.paper-title {
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--color-secondary);
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.paper-authors {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.55;
  margin-bottom: 16px;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.paper-footer {
  margin-top: auto;
  border-top: 1px solid var(--color-border-light);
  padding-top: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* --- Paper Summary Overlay & Tooltip --- */
.paper-summary-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: #f8fafc;
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  opacity: 0;
  pointer-events: none;
  transform: translateY(14px);
  transition: opacity 0.28s ease, transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 15;
  border-radius: var(--radius-md);
  overflow-y: auto;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.paper-card:not(.dismissed-summary):hover .paper-summary-overlay,
.paper-card.show-summary .paper-summary-overlay {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.summary-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  padding-bottom: 8px;
}

.summary-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  color: #38bdf8;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.summary-close-btn {
  color: #94a3b8;
  font-size: 1.2rem;
  line-height: 1;
  padding: 2px 6px;
  border-radius: 4px;
  cursor: pointer;
  transition: color 0.15s;
}

.summary-close-btn:hover {
  color: #ffffff;
}

.summary-text {
  font-size: 0.82rem;
  line-height: 1.6;
  color: #e2e8f0;
  margin-bottom: 10px;
}


.summary-actions {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.summary-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-primary);
  color: #ffffff !important;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.4);
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.summary-btn-primary:hover {
  background: var(--color-primary-light);
  transform: translateY(-1px);
}

.summary-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(255, 255, 255, 0.1);
  color: #e2e8f0 !important;
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.summary-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff !important;
}

.summary-btn-close {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: transparent;
  color: #94a3b8;
  border: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  margin-left: auto;
  transition: all var(--transition-fast);
}

.summary-btn-close:hover {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.08);
}

.summary-point {
  font-size: 0.78rem;
  color: #34d399;
  font-weight: 600;
  background: rgba(52, 211, 153, 0.14);
  border-left: 3px solid #34d399;
  padding: 6px 10px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-top: auto;
  margin-bottom: 4px;
}

.paper-summary-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.75rem;
  color: var(--color-primary-dark);
  font-weight: 600;
  background: var(--color-primary-light);
  padding: 4px 9px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(2, 132, 199, 0.2);
  transition: all var(--transition-fast);
}

.paper-summary-btn:hover {
  background: var(--color-primary);
  color: #ffffff;
}

.paper-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-primary);
  transition: gap var(--transition-fast);
}

.paper-link:hover {
  gap: 10px;
}

/* Publications Year Separator */
.pub-year-heading {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-secondary);
  margin: 40px 0 20px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-primary-light);
  display: flex;
  align-items: center;
  gap: 10px;
}

.pub-year-heading:first-of-type {
  margin-top: 0;
}

/* --- Members Section --- */
.members-category {
  margin-bottom: 56px;
}

.members-category:last-child {
  margin-bottom: 0;
}

.category-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.category-title::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 2px;
}

.members-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}

.member-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  padding: 24px 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: all var(--transition-normal);
}

.member-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-light);
}

.member-avatar-wrapper {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  padding: 4px;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent-light));
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast);
}

.member-card:hover .member-avatar-wrapper {
  transform: scale(1.05);
}

.member-avatar {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  background: #ffffff;
}

.member-name {
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: 4px;
}

.member-name-en {
  font-family: var(--font-en);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.member-role {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  background: var(--color-primary-light);
  padding: 2px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
}

.member-link-btn {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.member-link-btn:hover {
  background-color: var(--color-primary);
  color: #ffffff;
  border-color: transparent;
}

/* Alumni Box */
.alumni-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 28px 32px;
  box-shadow: var(--shadow-sm);
}

.alumni-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.alumni-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 16px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--color-border);
}

.alumni-item:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.alumni-degree {
  font-weight: 700;
  color: var(--color-primary-dark);
  font-size: 0.92rem;
}

.alumni-names {
  font-size: 0.92rem;
  color: var(--color-text-main);
  line-height: 1.6;
}

.alumni-link {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}

.alumni-link:hover {
  color: var(--color-secondary);
  text-decoration-color: var(--color-secondary);
}

/* --- About Us / Access Section --- */
.about-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 36px;
}

.about-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  padding: 36px;
}

.about-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.info-table {
  width: 100%;
  border-collapse: collapse;
}

.info-table th,
.info-table td {
  padding: 14px 16px;
  font-size: 0.92rem;
  line-height: 1.6;
  border-bottom: 1px solid var(--color-border-light);
}

.info-table tr:last-child th,
.info-table tr:last-child td {
  border-bottom: none;
}

.info-table th {
  width: 110px;
  text-align: left;
  font-weight: 600;
  color: var(--color-text-muted);
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
}

.info-table td {
  color: var(--color-text-main);
}

/* Contact & Admissions Side Card */
.contact-card {
  background: linear-gradient(135deg, #0a2540 0%, #0f172a 100%);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
}

.contact-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 14px;
}

.contact-lead {
  font-size: 0.92rem;
  color: #cbd5e1;
  line-height: 1.7;
  margin-bottom: 24px;
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 30px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: #e2e8f0;
}

.contact-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #38bdf8;
  flex-shrink: 0;
}

.contact-item a {
  color: #38bdf8;
}

.contact-item a:hover {
  color: #7dd3fc;
  text-decoration: underline;
}

.admissions-banner {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-top: auto;
}

.admissions-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.admissions-text {
  font-size: 0.85rem;
  color: #94a3b8;
  line-height: 1.6;
  margin-bottom: 14px;
}

.admissions-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent-blue));
  color: #ffffff !important;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.admissions-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(56, 189, 248, 0.4);
}

/* --- Footer --- */
.site-footer {
  background-color: var(--color-secondary);
  color: #94a3b8;
  padding: 60px 0 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.footer-brand-logo {
  width: 130px;
  height: 130px;
  border-radius: 16px;
  background: #ffffff;
  padding: 2px;
  object-fit: contain;
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.2);
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.footer-brand-logo:hover {
  transform: scale(1.04);
}

.footer-brand h4 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
}

.footer-brand p {
  font-size: 0.86rem;
  line-height: 1.65;
  color: #94a3b8;
  max-width: 360px;
}

.footer-links h5 {
  font-family: var(--font-en);
  font-size: 0.88rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.88rem;
  color: #94a3b8;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: #38bdf8;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: #64748b;
}

.back-to-top-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #94a3b8;
  font-size: 0.82rem;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.back-to-top-btn:hover {
  color: #38bdf8;
}

/* --- Scroll Animation Classes --- */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-on-scroll.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* --- Postgrad Page Specific Styles --- */
.postgrad-hero {
  background: linear-gradient(135deg, #0b1d33 0%, #172554 100%);
  color: #ffffff;
  padding: 80px 0 60px;
  text-align: center;
}

.postgrad-hero h1 {
  font-size: 2.4rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.postgrad-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  padding: 48px;
  margin-top: -30px;
  position: relative;
  z-index: 10;
}

.message-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border-light);
}

.message-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.message-bullet {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
}

.message-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--color-text-main);
}

/* --- Responsive Media Queries --- */
@media (max-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .research-card.has-media {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 68px;
  }

  .section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .slider-container {
    height: 340px;
  }

  .slide-caption-card {
    padding: 12px 18px;
    margin: 0 16px;
  }

  .slide-title {
    font-size: 0.95rem;
  }

  .slider-arrow {
    width: 38px;
    height: 38px;
  }
  .slider-arrow.prev { left: 12px; }
  .slider-arrow.next { right: 12px; }

  /* Mobile Nav Drawer */
  .hamburger-btn {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-link {
    font-size: 1.05rem;
    width: 100%;
    text-align: center;
  }

  .nav-cta {
    width: 100%;
    justify-content: center;
  }

  .research-card {
    padding: 24px;
  }

  .about-card, .contact-card {
    padding: 24px;
  }

  .alumni-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer-brand-logo {
    width: 90px;
    height: 90px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 14px;
    text-align: center;
  }
}

.paper-card.dismissed-summary .paper-summary-overlay {
  display: none !important;
  opacity: 0 !important;
  pointer-events: none !important;
}