/* Academic Website Styles */

/* ===== GLOBAL STYLES ===== */
:root {
  /* Color Palette */
  --primary-color: #1e3a8a;          /* Deep blue */
  --primary-light: #3b82f6;          /* Lighter blue */
  --primary-dark: #1e40af;           /* Darker blue */
  --secondary-color: #64748b;        /* Slate gray */
  --accent-color: #059669;           /* Academic green */
  --text-dark: #1f2937;              /* Dark gray */
  --text-light: #6b7280;             /* Light gray */
  --text-muted: #9ca3af;             /* Muted gray */
  --background-light: #f8fafc;       /* Very light gray */
  --background-white: #ffffff;       /* Pure white */
  --border-light: #e5e7eb;           /* Light border */
  --shadow-light: rgba(0, 0, 0, 0.1);
  --shadow-medium: rgba(0, 0, 0, 0.15);
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-secondary: 'Crimson Text', Georgia, 'Times New Roman', serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* Layout */
  --container-max-width: 1200px;
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--background-white);
}

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-sm);
  color: var(--text-dark);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--spacing-sm);
  color: var(--text-light);
}

.lead {
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--text-dark);
  margin-bottom: var(--spacing-md);
}

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

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 12px 24px;
  border: none;
  border-radius: var(--border-radius);
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow-medium);
}

.btn-secondary {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
  background-color: var(--primary-color);
  color: white;
}

/* Section Styling */
section {
  padding: var(--spacing-3xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--text-dark);
}

.section-divider {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
  margin: 0 auto;
  border-radius: 2px;
}

/* ===== NAVIGATION ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  transition: var(--transition);
}

.nav-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-logo a {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
}

.nav-menu {
  display: flex;
  gap: var(--spacing-lg);
}

.nav-link {
  color: var(--text-dark);
  font-weight: 500;
  padding: var(--spacing-xs) 0;
  position: relative;
  transition: var(--transition);
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width 0.3s ease;
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.bar {
  width: 25px;
  height: 3px;
  background-color: var(--text-dark);
  margin: 3px 0;
  transition: var(--transition);
}

/* ===== HERO SECTION ===== */
.hero {
  padding: calc(70px + var(--spacing-3xl)) 0 var(--spacing-3xl);
  background: linear-gradient(135deg, var(--background-light) 0%, white 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 460px;
  gap: var(--spacing-3xl);
  align-items: center;
}

.profile-photo {
  width: 360px;
  height: 360px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid #fff;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  display: block;
  margin: 0 auto;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--secondary-color);
  margin-bottom: 0;
  font-weight: 500;
}

.hero-affiliation {
  font-size: 1.25rem;
  color: var(--accent-color);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.hero-description {
  font-size: 1.125rem;
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
  color: var(--text-light);
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
}

.profile-image-placeholder {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--background-light), var(--border-light));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  border: 4px solid white;
  box-shadow: 0 10px 30px var(--shadow-light);
}

.profile-image-placeholder i {
  font-size: 4rem;
  margin-bottom: var(--spacing-sm);
}

.profile-image-placeholder p {
  font-size: 1rem;
  color: var(--text-muted);
}

/* ===== ABOUT SECTION ===== */
.about {
  background-color: var(--background-white);
}

.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

/* Tidy one-column About layout */
.about-content.one-column {
  grid-template-columns: 1fr;
  max-width: 820px;
  margin: 0 auto;
  gap: var(--spacing-lg);
}

.about-block {
  background: var(--background-light);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--primary-color);
}

.about-block h3 {
  margin-bottom: var(--spacing-sm);
}

.awards-compact li {
  margin-bottom: var(--spacing-sm);
}

.about-text {
  font-size: 1.125rem;
  line-height: 1.8;
}

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.highlight-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background-color: var(--background-light);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--primary-color);
}

.highlight-icon {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  background-color: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.25rem;
}

.highlight-content h3 {
  color: var(--text-dark);
  margin-bottom: var(--spacing-xs);
}

.highlight-content p {
  margin: 0;
  color: var(--text-light);
}

/* ===== RESEARCH SECTION ===== */
.research {
  background-color: var(--background-light);
}

.research-overview {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.research-areas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.research-card {
  background-color: white;
  padding: var(--spacing-xl);
  border-radius: var(--border-radius);
  box-shadow: 0 4px 6px var(--shadow-light);
  text-align: center;
  transition: var(--transition);
}

.research-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px var(--shadow-medium);
}

.research-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  color: white;
  font-size: 2rem;
}

.research-card h3 {
  color: var(--text-dark);
  margin-bottom: var(--spacing-md);
}

.research-card p {
  color: var(--text-light);
  line-height: 1.7;
}

/* ===== PUBLICATIONS SECTION ===== */
.publications {
  background-color: var(--background-white);
}

.publications-intro {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.publications-intro p {
  font-size: 1.125rem;
  color: var(--text-light);
}

.publications-list {
  margin-bottom: var(--spacing-3xl);
}

.publication-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}

.publication-item:hover {
  background-color: var(--background-light);
  border-radius: var(--border-radius);
}

.publication-year {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--primary-color);
  text-align: center;
  padding: var(--spacing-xs);
  background-color: var(--background-light);
  border-radius: var(--border-radius);
  height: fit-content;
}

.publication-title {
  font-size: 1.25rem;
  color: var(--text-dark);
  margin-bottom: var(--spacing-xs);
  font-family: var(--font-secondary);
}

.publication-authors {
  color: var(--text-light);
  margin-bottom: var(--spacing-xs);
}

.publication-authors strong {
  color: var(--primary-color);
}

.publication-venue {
  color: var(--text-muted);
  margin-bottom: var(--spacing-md);
  font-style: italic;
}

.publication-links {
  display: flex;
  gap: var(--spacing-md);
}

.pub-link {
  padding: 4px 12px;
  background-color: var(--background-light);
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--primary-color);
  transition: var(--transition);
}

.pub-link:hover {
  background-color: var(--primary-color);
  color: white;
}

.publications-cta {
  text-align: center;
}

.publication-category {
  margin-bottom: var(--spacing-3xl);
}

.category-title {
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--primary-light);
  font-family: var(--font-secondary);
}

/* ===== PROJECTS SECTION ===== */
.projects {
  background-color: var(--background-light);
}

.projects-intro {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.projects-intro p {
  font-size: 1.125rem;
  color: var(--text-light);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-lg);
}

.project-card {
  background: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: 0 4px 15px var(--shadow-light);
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px var(--shadow-medium);
}

.project-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

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

.project-content {
  padding: var(--spacing-lg);
}

.project-title {
  font-size: 1.25rem;
  color: var(--text-dark);
  margin-bottom: var(--spacing-sm);
  font-family: var(--font-secondary);
}

.project-description {
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.project-links {
  display: flex;
  gap: var(--spacing-sm);
}

.project-link {
  padding: 6px 12px;
  background-color: var(--background-light);
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--primary-color);
  transition: var(--transition);
}

.project-link:hover {
  background-color: var(--primary-color);
  color: white;
}

/* ===== CERTIFICATES SECTION ===== */
.certificates {
  background-color: var(--background-white);
}

.certificates-intro {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.certificates-intro p {
  font-size: 1.125rem;
  color: var(--text-light);
}

.certificates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.certificate-card {
  background: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: 0 4px 15px var(--shadow-light);
  transition: var(--transition);
  border: 1px solid var(--border-light);
}

.certificate-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px var(--shadow-medium);
}

.certificate-image {
  width: 100%;
  height: 150px;
  overflow: hidden;
  background-color: var(--background-light);
}

.certificate-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.certificate-content {
  padding: var(--spacing-lg);
  text-align: center;
}

.certificate-title {
  font-size: 1.125rem;
  color: var(--text-dark);
  margin-bottom: var(--spacing-xs);
  font-family: var(--font-secondary);
}

.certificate-issuer {
  color: var(--primary-color);
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
}

.certificate-date {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-md);
}

.certificate-links {
  display: flex;
  justify-content: center;
}

.certificate-link {
  padding: 8px 16px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
}

.certificate-link:hover {
  background-color: var(--primary-dark);
}

/* ===== TEACHING SECTION ===== */
.teaching {
  background-color: var(--background-light);
}

.teaching-content {
  max-width: 800px;
  margin: 0 auto;
}

.teaching-philosophy {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.teaching-philosophy h3 {
  font-size: 1.75rem;
  margin-bottom: var(--spacing-md);
  color: var(--text-dark);
}

.teaching-philosophy p {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--text-light);
}

.courses h3 {
  font-size: 1.75rem;
  margin-bottom: var(--spacing-lg);
  color: var(--text-dark);
  text-align: center;
}

.course-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.course-item {
  background-color: white;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: 0 2px 4px var(--shadow-light);
}

.course-item h4 {
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

.course-item p {
  margin-bottom: var(--spacing-sm);
}

.course-item p strong {
  color: var(--text-dark);
}

.mentoring {
  margin-top: var(--spacing-3xl);
}

.mentoring h3 {
  font-size: 1.75rem;
  margin-bottom: var(--spacing-lg);
  color: var(--text-dark);
  text-align: center;
}

.mentoring-content p {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--text-light);
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.mentoring-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

.stat-item {
  background-color: white;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: 0 2px 4px var(--shadow-light);
  text-align: center;
}

.stat-item h4 {
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
  font-size: 1.25rem;
}

.stat-item p {
  margin-bottom: var(--spacing-xs);
  color: var(--text-light);
}

/* ===== CONTACT SECTION ===== */
.contact {
  background-color: var(--background-white);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.contact-item {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.contact-icon {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  background-color: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.25rem;
}

.contact-details h3 {
  color: var(--text-dark);
  margin-bottom: var(--spacing-xs);
}

.contact-details p {
  margin: 0;
  color: var(--text-light);
}

.contact-details a {
  color: var(--primary-color);
  font-weight: 500;
}

.social-links {
  text-align: center;
}

.social-links h3 {
  font-size: 1.75rem;
  margin-bottom: var(--spacing-lg);
  color: var(--text-dark);
}

.social-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.social-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  background-color: var(--background-light);
  border-radius: var(--border-radius);
  color: var(--text-dark);
  transition: var(--transition);
  text-decoration: none;
}

.social-link:hover {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px var(--shadow-medium);
}

.social-link i {
  font-size: 2rem;
}

.social-link span {
  font-weight: 500;
}

/* ===== FOOTER ===== */
.footer {
  background-color: var(--text-dark);
  color: white;
  padding: var(--spacing-xl) 0;
}

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

.footer-text p {
  margin: 0;
  color: #d1d5db;
}

.footer-links {
  display: flex;
  gap: var(--spacing-lg);
}

.footer-links a {
  color: #d1d5db;
  transition: var(--transition);
}

.footer-links a:hover {
  color: white;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .about-content {
    grid-template-columns: 1fr;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-3xl: 4rem;
    --spacing-2xl: 3rem;
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: white;
    flex-direction: column;
    justify-content: start;
    align-items: center;
    padding-top: var(--spacing-xl);
    transition: left 0.3s ease;
    box-shadow: 0 4px 6px var(--shadow-light);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .nav-toggle.active .bar:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  
  .nav-toggle.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .profile-image-placeholder {
    width: 250px;
    height: 250px;
  }
  
  .research-areas {
    grid-template-columns: 1fr;
  }
  
  .publication-item {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .publication-year {
    text-align: left;
    width: fit-content;
  }
  
  .social-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .btn {
    padding: 10px 20px;
    font-size: 0.875rem;
  }
  
  .hero-buttons {
    width: 100%;
  }
  
  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ===== SCROLL ANIMATIONS ===== */
@media (prefers-reduced-motion: no-preference) {
  .research-card,
  .publication-item,
  .course-item,
  .contact-item {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
  }
  
  .research-card:nth-child(2) { animation-delay: 0.1s; }
  .research-card:nth-child(3) { animation-delay: 0.2s; }
  
  @keyframes fadeInUp {
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

/* ===== ACCESSIBILITY ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus styles for better accessibility */
a:focus,
button:focus,
.btn:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --primary-color: #000080;
    --text-light: #000000;
    --border-light: #000000;
  }
}

/* ===== ENHANCED PUBLICATIONS STYLES ===== */
.publication-item.featured {
  border: 2px solid var(--primary-light);
  border-radius: var(--border-radius);
  background-color: var(--background-light);
}

.publication-main {
  display: grid;
  grid-template-columns: 1fr 200px;
  gap: var(--spacing-lg);
  align-items: start;
}

.publication-image {
  position: relative;
}

.pub-img {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  box-shadow: 0 2px 8px var(--shadow-light);
}

.publication-abstract {
  margin: var(--spacing-md) 0;
  padding: var(--spacing-md);
  background-color: var(--background-light);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--primary-color);
}

.publication-abstract p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

.pub-link i {
  margin-right: var(--spacing-xs);
}

.cta-note {
  margin-top: var(--spacing-md);
  font-size: 0.9rem;
  color: var(--text-muted);
  background-color: var(--background-light);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--accent-color);
}

/* ===== ENHANCED PROJECTS STYLES ===== */
.projects-category {
  margin-bottom: var(--spacing-3xl);
}

.projects-category h3 {
  font-size: 1.75rem;
  color: var(--primary-color);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.project-card.featured {
  border: 2px solid var(--primary-color);
  transform: scale(1.02);
}

.project-overlay {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
}

.project-status {
  background-color: var(--accent-color);
  color: white;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.project-meta {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: var(--spacing-sm);
}

.project-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.feature-tag {
  background-color: var(--background-light);
  color: var(--primary-color);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
}

.project-link.primary {
  background-color: var(--primary-color);
  color: white;
}

.project-link.primary:hover {
  background-color: var(--primary-dark);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.tool-card {
  background: white;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: 0 2px 8px var(--shadow-light);
  text-align: center;
}

.tool-icon {
  width: 60px;
  height: 60px;
  background-color: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  color: white;
  font-size: 1.5rem;
}

.tool-card h4 {
  margin-bottom: var(--spacing-sm);
  color: var(--text-dark);
}

.tool-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.tool-link {
  padding: 4px 8px;
  background-color: var(--background-light);
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--primary-color);
  transition: var(--transition);
}

.tool-link:hover {
  background-color: var(--primary-color);
  color: white;
}

.projects-note {
  text-align: center;
  margin-top: var(--spacing-2xl);
}

.projects-note p {
  background-color: var(--background-light);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--accent-color);
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ===== ENHANCED CERTIFICATES STYLES ===== */
.certificates-category {
  margin-bottom: var(--spacing-3xl);
}

.certificates-category h3 {
  font-size: 1.75rem;
  color: var(--primary-color);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.certificate-card.featured {
  border: 2px solid var(--primary-color);
  transform: scale(1.02);
}

.certificate-badge {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  background-color: var(--accent-color);
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.certificate-field {
  font-style: italic;
  color: var(--text-light);
  margin-bottom: var(--spacing-xs);
}

.certificate-description {
  font-size: 0.9rem;
  line-height: 1.5;
  margin-bottom: var(--spacing-md);
  text-align: left;
}

.certificate-issuer i,
.certificate-date i {
  margin-right: var(--spacing-xs);
  color: var(--primary-color);
}

.certificate-links {
  gap: var(--spacing-sm);
}

.awards-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.award-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: white;
  border-radius: var(--border-radius);
  box-shadow: 0 2px 8px var(--shadow-light);
  border-left: 4px solid var(--accent-color);
}

.award-icon {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  background-color: var(--accent-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.25rem;
}

.award-content h4 {
  color: var(--text-dark);
  margin-bottom: var(--spacing-xs);
}

.award-issuer {
  color: var(--primary-color);
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
}

.award-description {
  color: var(--text-light);
  font-size: 0.9rem;
  line-height: 1.5;
}

.certificates-note {
  text-align: center;
  margin-top: var(--spacing-2xl);
}

.certificates-note p {
  background-color: var(--background-light);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--accent-color);
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ===== RESPONSIVE UPDATES FOR ENHANCED SECTIONS ===== */
@media (max-width: 768px) {
  .publication-main {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .publication-image {
    order: -1;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .tools-grid {
    grid-template-columns: 1fr;
  }
  
  .certificates-grid {
    grid-template-columns: 1fr;
  }
  
  .mentoring-stats {
    grid-template-columns: 1fr;
  }
  
  .project-features {
    justify-content: center;
  }
  
  .award-item {
    flex-direction: column;
    text-align: center;
  }
}