/* ============================================================
   VASCULAR MEDIA LAB — Design System & Styles
   10x Genomics–Inspired Dark Theme
   ============================================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

/* ---------- CSS Custom Properties (Design Tokens) ---------- */
:root {
  /* Backgrounds */
  --bg-primary: #0A0E1A;
  --bg-surface: #111827;
  --bg-surface-hover: #1F2937;
  --bg-elevated: #1a2332;

  /* Accent Colors */
  --accent-blue: #E4472B;
  --accent-blue-hover: #F43F5E;
  --accent-cyan: #FF3EA5;
  --accent-cyan-glow: rgba(255, 62, 165, 0.4);
  --accent-green: #10B981;
  --accent-coral: #F59E0B;

  /* Text Colors */
  --text-primary: #F9FAFB;
  --text-secondary: #9CA3AF;
  --text-accent: #FFA6D5;
  --text-muted: #6B7280;

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, #0A0E1A 0%, #2A0915 50%, #470A1E 100%);
  --gradient-card: linear-gradient(180deg, rgba(255,62,165,0.08) 0%, rgba(228,71,43,0.04) 100%);
  --gradient-text: linear-gradient(135deg, #FFA6D5, #E4472B, #FF3EA5);
  --gradient-button: linear-gradient(135deg, #E4472B, #FF3EA5);

  /* Glass Effect */
  --glass-bg: rgba(17, 24, 39, 0.75);
  --glass-border: rgba(255, 62, 165, 0.15);
  --glass-blur: blur(16px);

  /* Borders */
  --border-subtle: rgba(255, 62, 165, 0.1);
  --border-accent: rgba(255, 62, 165, 0.3);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(255, 62, 165, 0.15);
  --shadow-glow-blue: 0 0 30px rgba(228, 71, 43, 0.2);

  /* Typography */
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Spacing */
  --section-padding: 120px 0;
  --container-max: 1200px;
  --container-padding: 0 24px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.6s ease;
  --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

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

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  outline: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

/* ---------- Utility Classes ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--container-padding);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 16px;
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 2px;
  background: var(--accent-cyan);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 16px;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.8;
}

.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Scroll Animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  padding: 12px 0;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--shadow-md);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  margin-right: 32px;
  flex-shrink: 0;
}

.nav-logo-img {
  height: 44px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 0 8px rgba(6, 182, 212, 0.4));
  transition: transform var(--transition-fast);
}

.nav-logo:hover .nav-logo-img {
  transform: scale(1.08) rotate(4deg);
}

.nav-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--gradient-button);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: white;
  box-shadow: var(--shadow-glow-blue);
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.nav-logo-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.nav-logo-sub {
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-cyan);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: 1px;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
  flex-wrap: nowrap;
  white-space: nowrap;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  position: relative;
  padding: 4px 0;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-cyan);
  transition: width var(--transition-base);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

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

.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 4px;
}

.nav-mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

/* Mobile & Tablet Nav Breakpoint */
@media (max-width: 1180px) {
  .nav-mobile-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    padding: 80px 40px 40px;
    background: var(--bg-surface);
    border-left: 1px solid var(--glass-border);
    gap: 24px;
    transition: right var(--transition-base);
  }

  .nav-links.open {
    right: 0;
  }

  .nav-links a {
    font-size: 1.1rem;
  }
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--gradient-hero);
}

.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-bg-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
  z-index: 0;
  animation: aorta-glow-breath 12s ease-in-out infinite;
}

@keyframes aorta-glow-breath {
  0%, 100% {
    transform: scale(1);
    opacity: 0.55;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.70;
  }
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at center, rgba(10, 14, 26, 0.4) 0%, var(--bg-primary) 85%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  max-width: 900px;
  padding: 0 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent-cyan);
  margin-bottom: 32px;
  animation: fadeInDown 0.8s ease 0.2s both;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  animation: pulse-dot 2s ease-in-out infinite;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 24px;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-title .highlight {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 40px;
  line-height: 1.8;
  animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.8s both;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--gradient-button);
  color: white;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-glow-blue);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(0, 113, 217, 0.4);
  color: white;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: transparent;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--glass-border);
  transition: all var(--transition-base);
}

.btn-secondary:hover {
  background: rgba(6, 182, 212, 0.1);
  border-color: var(--accent-cyan);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  animation: fadeInUp 0.8s ease 1s both;
}

.scroll-mouse {
  width: 24px;
  height: 38px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  position: relative;
}

.scroll-mouse::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 8px;
  background: var(--accent-cyan);
  border-radius: 2px;
  animation: scroll-wheel 2s ease-in-out infinite;
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */
.about {
  padding: var(--section-padding);
  position: relative;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-size: 1.05rem;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 32px;
}

.about-feature-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--glass-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.about-feature-card:hover {
  border-color: var(--border-accent);
  background: rgba(255, 62, 165, 0.05);
  transform: translateX(8px);
}

.about-feature-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(255, 62, 165, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.about-feature-card h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.about-feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0;
}

.about-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-image-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-glow);
}

.about-image-wrapper img {
  width: 100%;
  border-radius: var(--radius-lg);
}

.about-image-glow {
  position: absolute;
  top: -20%;
  right: -20%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(255, 62, 165, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

@media (max-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-visual {
    order: -1;
  }
}

/* ============================================================
   RESEARCH SECTION
   ============================================================ */
.research {
  padding: var(--section-padding);
  position: relative;
  overflow: hidden;
}

.research-header {
  text-align: center;
  margin-bottom: 60px;
}

.research-header .section-subtitle {
  margin: 0 auto;
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.research-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-base);
  cursor: default;
}

.research-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
}

.research-card-image {
  width: 100%;
  height: 230px;
  object-fit: cover;
  transition: transform var(--transition-slow), filter 0.3s ease;
}

.research-card-image-wrapper {
  overflow: hidden;
  position: relative;
  cursor: pointer;
}

.research-card-image-wrapper:hover .research-card-image {
  transform: scale(1.08);
  filter: brightness(1.1);
}

.research-card-image-wrapper::after {
  content: '🔍 View Full Image';
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(17, 24, 39, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--accent-cyan);
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  border: 1px solid var(--glass-border);
  opacity: 0;
  transform: translateY(6px);
  transition: all 0.3s ease;
  z-index: 5;
  pointer-events: none;
}

.research-card-image-wrapper:hover::after {
  opacity: 1;
  transform: translateY(0);
}

.research-card-body {
  padding: 24px;
  position: relative;
}

.research-card-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.research-card h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.research-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

@media (max-width: 768px) {
  .research-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   TEAM SECTION
   ============================================================ */
.team {
  padding: var(--section-padding);
  position: relative;
}

.team-header {
  text-align: center;
  margin-bottom: 40px;
}

.team-header .section-subtitle {
  margin: 0 auto;
}

/* Tab Switcher */
.team-tabs {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin-bottom: 48px;
  background: var(--bg-surface);
  padding: 4px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  display: inline-flex;
}

.team-tabs-wrapper {
  text-align: center;
}

.team-tab {
  padding: 10px 28px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: transparent;
  transition: all var(--transition-base);
  cursor: pointer;
}

.team-tab:hover {
  color: var(--text-primary);
}

.team-tab.active {
  background: var(--gradient-button);
  color: white;
  box-shadow: var(--shadow-glow-blue);
}

/* Team Grid */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.team-panel {
  display: none;
}

.team-panel.active {
  display: block;
}

/* Team Card */
.team-card {
  background: var(--glass-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition-base);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.team-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
}

.team-card-photo {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 20px;
  border: 3px solid var(--border-accent);
  box-shadow: 0 0 20px rgba(255, 62, 165, 0.2);
}

.team-card h3 {
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.team-card-role {
  font-size: 0.85rem;
  color: var(--accent-cyan);
  font-weight: 500;
  margin-bottom: 12px;
}

.team-card-bio {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.team-card-links {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.team-card-link {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 62, 165, 0.1);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: all var(--transition-base);
}

.team-card-link:hover {
  background: var(--accent-cyan);
  color: var(--bg-primary);
  border-color: var(--accent-cyan);
}

.team-empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

/* Past member badge */
.team-card.past {
  opacity: 0.8;
}

.team-card.past .team-card-photo {
  border-color: rgba(244, 63, 94, 0.3);
}

/* ============================================================
   PUBLICATIONS SECTION
   ============================================================ */
.publications {
  padding: var(--section-padding);
  position: relative;
  background: linear-gradient(180deg, var(--bg-primary) 0%, rgba(42, 9, 21, 0.3) 50%, var(--bg-primary) 100%);
}

.publications-header {
  text-align: center;
  margin-bottom: 60px;
}

.publications-header .section-subtitle {
  margin: 0 auto;
}

.publications-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 900px;
  margin: 0 auto;
}

.publication-card {
  padding: 28px;
  background: var(--glass-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.publication-card:hover {
  border-color: var(--border-accent);
  background: rgba(255, 62, 165, 0.03);
  transform: translateX(8px);
}

.publication-card-year {
  display: inline-block;
  padding: 3px 10px;
  background: rgba(0, 113, 217, 0.15);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-blue);
  margin-bottom: 10px;
}

.publication-card h3 {
  font-size: 1.1rem;
  font-family: var(--font-body);
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 8px;
}

.publication-card-authors {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.publication-card-journal {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
}

.publication-card-doi {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  padding: 6px 14px;
  background: rgba(255, 62, 165, 0.08);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent-cyan);
  transition: all var(--transition-base);
}

.publication-card-doi:hover {
  background: rgba(255, 62, 165, 0.2);
  border-color: var(--accent-cyan);
}

.publications-empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */
.contact {
  padding: var(--section-padding);
  position: relative;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.contact-info p {
  color: var(--text-secondary);
  margin-bottom: 32px;
  font-size: 1.05rem;
}

.contact-detail {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.contact-detail-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(255, 62, 165, 0.1);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-detail-text h4 {
  font-size: 0.9rem;
  margin-bottom: 2px;
}

.contact-detail-text p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0;
}

/* Contact Form */
.contact-form {
  background: var(--glass-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: all var(--transition-base);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(255, 62, 165, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.btn-submit {
  width: 100%;
  padding: 14px;
  background: var(--gradient-button);
  color: white;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-submit:hover {
  box-shadow: 0 0 30px rgba(0, 113, 217, 0.3);
  transform: translateY(-2px);
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 9999;
  padding: 16px 24px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  color: white;
  box-shadow: var(--shadow-lg);
  transform: translateY(120%);
  opacity: 0;
  transition: all var(--transition-spring);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast.success {
  background: var(--accent-green);
}

.toast.error {
  background: var(--accent-coral);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  padding: 60px 0 32px;
  border-top: 1px solid var(--border-subtle);
  background: rgba(17, 24, 39, 0.5);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 48px;
}

.footer-brand-link {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  text-decoration: none;
  margin-bottom: 12px;
  transition: transform var(--transition-fast);
}

.footer-brand-link:hover {
  transform: translateY(-2px);
}

.footer-logo-img {
  height: 128px;
  width: auto;
  object-fit: contain;
  display: block;
  filter: drop-shadow(0 0 16px rgba(6, 182, 212, 0.35));
}

.footer-brand-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  margin-top: 10px;
  line-height: 1.2;
}

.footer-brand-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
  max-width: 420px;
  margin-top: 4px;
}

.footer h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 62, 165, 0.08);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: all var(--transition-base);
}

.footer-social a:hover {
  background: var(--accent-cyan);
  color: var(--bg-primary);
  border-color: var(--accent-cyan);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}

/* ============================================================
   SECTION DIVIDERS
   ============================================================ */
.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
  margin: 0;
  border: none;
}

/* ============================================================
   KEYFRAME ANIMATIONS
   ============================================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse-dot {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.5);
  }
}

@keyframes scroll-wheel {
  0% {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateX(-50%) translateY(12px);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-20px);
  }
}

@keyframes glow-pulse {
  0%, 100% {
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.1);
  }
  50% {
    box-shadow: 0 0 40px rgba(6, 182, 212, 0.25);
  }
}

/* ============================================================
   LOADING SPINNER
   ============================================================ */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ============================================================
   RESPONSIVE UTILITIES
   ============================================================ */
@media (max-width: 480px) {
  :root {
    --section-padding: 80px 0;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 0.95rem;
  }

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

/* ============================================================
   FRONTEND ABSTRACT MODAL
   ============================================================ */
.frontend-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.frontend-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.frontend-modal {
  background: rgba(17, 24, 39, 0.95);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 700px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(255, 62, 165, 0.15);
  transform: scale(0.9);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.frontend-modal-overlay.active .frontend-modal {
  transform: scale(1);
}

.frontend-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 24px 28px;
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  background: rgba(17, 24, 39, 0.98);
  z-index: 10;
}

.frontend-modal-header h3 {
  font-family: var(--font-body);
  font-size: 1.25rem;
  color: var(--text-primary);
  line-height: 1.4;
  margin: 0;
  padding-right: 24px;
}

.frontend-modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.8rem;
  cursor: pointer;
  line-height: 1;
  padding: 0;
  transition: color 0.2s ease;
}

.frontend-modal-close:hover {
  color: var(--accent-coral);
}

.frontend-modal-body {
  padding: 28px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.modal-authors {
  font-size: 0.95rem;
  color: var(--accent-cyan);
  margin-bottom: 8px;
  font-weight: 500;
}

.modal-journal {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 0;
}

.modal-divider {
  border: 0;
  height: 1px;
  background: var(--border-subtle);
  margin: 20px 0;
}

.frontend-modal-body h4 {
  font-family: var(--font-body);
  color: var(--text-primary);
  margin-bottom: 12px;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.modal-abstract-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  text-align: justify;
}

/* ============================================================
   NEWS SLIDER SECTION
   ============================================================ */
.news {
  padding: var(--section-padding);
  background: var(--bg-dark);
  position: relative;
}

.news-slider-wrapper {
  position: relative;
  overflow: hidden;
  margin-top: 40px;
  padding: 10px 4px 30px;
}

.news-track {
  display: flex;
  gap: 28px;
  justify-content: flex-start;
  flex-wrap: nowrap;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.news-card {
  flex: 0 0 360px;
  min-width: 320px;
  max-width: 380px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, box-shadow 0.3s ease, z-index 0.3s ease;
  position: relative;
  z-index: 1;
}

.news-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent-cyan);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 25px rgba(6, 182, 212, 0.25);
  z-index: 10;
}

.news-card-image-wrapper {
  position: relative;
  height: 210px;
  overflow: hidden;
  background: #0b1120;
  cursor: pointer;
  transition: height 0.4s ease;
}

.news-card:hover .news-card-image-wrapper {
  height: 250px;
}

.news-card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease, object-fit 0.3s ease, filter 0.3s ease;
}

.news-card:hover .news-card-image {
  object-fit: contain;
  transform: scale(1.02);
  filter: brightness(1.08);
}

.news-card-image-wrapper::after {
  content: '🔍 Click for Full Photo';
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(15, 23, 42, 0.88);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--accent-cyan);
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  border: 1px solid var(--glass-border);
  opacity: 0;
  transform: translateY(6px);
  transition: all 0.3s ease;
  z-index: 5;
  pointer-events: none;
}

.news-card-image-wrapper:hover::after {
  opacity: 1;
  transform: translateY(0);
}

.news-card-category {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  color: var(--accent-cyan);
  border: 1px solid rgba(255, 62, 165, 0.3);
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  z-index: 4;
}

.news-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.news-card-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-heading);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.news-card-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: all 0.3s ease;
}

.news-card:hover .news-card-title {
  -webkit-line-clamp: unset;
  overflow: visible;
  display: block;
  color: var(--accent-cyan);
}

.news-card-summary {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: all 0.3s ease;
}

.news-card:hover .news-card-summary {
  -webkit-line-clamp: unset;
  overflow: visible;
  display: block;
  color: var(--text-primary);
}

.news-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color 0.2s ease, gap 0.2s ease;
  margin-top: auto;
}

.news-card-link:hover {
  color: #ffa6d5;
  gap: 10px;
}

.news-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 24px;
}

.news-arrow-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  transition: all 0.2s ease;
}

.news-arrow-btn:hover:not(:disabled) {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  background: rgba(255, 62, 165, 0.1);
  transform: scale(1.05);
}

.news-arrow-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.news-dots {
  display: flex;
  gap: 8px;
}

.news-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-subtle);
  cursor: pointer;
  transition: all 0.3s ease;
}

/* Image Lightbox Modal */
.lightbox-modal {
  display: none;
  position: fixed;
  z-index: 9999;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(10, 14, 26, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  justify-content: center;
  align-items: center;
  flex-direction: column;
  padding: 20px;
  cursor: zoom-out;
  animation: fadeIn 0.25s ease-out;
}

.lightbox-modal.active {
  display: flex;
}

.lightbox-content {
  max-width: 92%;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8), 0 0 30px rgba(6, 182, 212, 0.3);
  border: 1px solid var(--glass-border);
  transition: transform 0.3s ease;
}

.lightbox-caption {
  margin-top: 16px;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  color: var(--text-primary);
  text-anchor: middle;
  text-align: center;
  max-width: 800px;
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 32px;
  color: #fff;
  font-size: 36px;
  font-weight: 300;
  cursor: pointer;
  transition: color 0.2s ease;
}

.lightbox-close:hover {
  color: var(--accent-cyan);
}

.news-dot.active {
  background: var(--accent-cyan);
  width: 24px;
  border-radius: var(--radius-full);
}

@media (max-width: 768px) {
  .news-card {
    flex: 0 0 300px;
    max-width: 300px;
  }
}