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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: #1f2937;
  background-color: #ffffff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Utility Classes */
.hidden {
  display: none !important;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (min-width: 1024px) {
  .container {
    padding: 0 2rem;
  }
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 50;
  transition: all 0.5s ease;
}

.navbar.scrolled {
  backdrop-filter: blur(64px);
  -webkit-backdrop-filter: blur(64px);
  background-color: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (min-width: 1024px) {
  .nav-container {
    padding: 0 2rem;
  }
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 0;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 900;
  color: #1f2937;
  cursor: pointer;
  transition: color 0.2s ease;
}

.nav-logo:hover {
  color: #374151;
}

.nav-desktop {
  display: none;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .nav-desktop {
    display: flex;
  }
}

.nav-link {
  background: none;
  border: none;
  color: #6b7280;
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  transition: color 0.2s ease;
  position: relative;
  padding: 0.5rem 0;
}

.nav-link:hover {
  color: #1f2937;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -0.25rem;
  left: 0;
  width: 0;
  height: 2px;
  background-color: #1f2937;
  transition: width 0.3s ease;
}

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

.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: #6b7280;
  cursor: pointer;
  padding: 0.5rem;
  transition: color 0.2s ease;
}

@media (min-width: 768px) {
  .mobile-menu-btn {
    display: none;
  }
}

.mobile-menu-btn:hover {
  color: #1f2937;
}

.mobile-menu {
  display: none;
  backdrop-filter: blur(64px);
  -webkit-backdrop-filter: blur(64px);
  background-color: rgba(255, 255, 255, 0.95);
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.mobile-menu.active {
  display: block;
}

@media (min-width: 768px) {
  .mobile-menu {
    display: none !important;
  }
}

.mobile-menu-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mobile-nav-link {
  background: none;
  border: none;
  color: #6b7280;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  padding: 0.5rem 0;
  transition: color 0.2s ease;
}

.mobile-nav-link:hover {
  color: #1f2937;
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  padding-top: 5rem;
  position: relative;
}

@media (min-width: 1024px) {
  .hero-section {
    padding: 2rem;
    padding-top: 5rem;
  }
}

.hero-content {
  text-align: center;
  max-width: 1536px;
  margin: 0 auto;
  width: 100%;
}

.hero-avatar {
  margin-bottom: 4rem;
}

.avatar-container {
  width: 8rem;
  height: 8rem;
  margin: 0 auto;
  border-radius: 1.5rem;
  background-color: #1f2937;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  transition: all 0.5s ease;
}

.avatar-container:hover {
  transform: scale(1.05);
  box-shadow: 0 32px 64px -12px rgba(0, 0, 0, 0.35);
}

.avatar-text {
  color: white;
  font-size: 1.5rem;
  font-weight: 900;
}

.hero-text {
  margin-bottom: 3rem;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 900;
  color: #1f2937;
  line-height: 1.1;
  letter-spacing: -0.025em;
  margin-bottom: 1rem;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 3.75rem;
  }
}

@media (min-width: 1024px) {
  .hero-title {
    font-size: 4.5rem;
  }
}

.hero-subtitle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.subtitle-line {
  height: 1px;
  background-color: #d1d5db;
  width: 4rem;
}

.subtitle-text {
  font-size: 1.25rem;
  color: #6b7280;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
}

@media (min-width: 768px) {
  .subtitle-text {
    font-size: 1.5rem;
  }
}

.hero-quote {
  font-size: 1.125rem;
  color: #6b7280;
  font-weight: 500;
  font-style: italic;
  max-width: 64rem;
  margin: 0 auto 2rem;
  padding: 1rem 1.5rem;
  background-color: rgba(0, 0, 0, 0.02);
  border-radius: 0.75rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

@media (min-width: 768px) {
  .hero-quote {
    font-size: 1.25rem;
  }
}

.hero-contact-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: #6b7280;
  font-size: 0.875rem;
  margin-bottom: 2rem;
}

@media (min-width: 640px) {
  .hero-contact-info {
    flex-direction: row;
    justify-content: center;
  }
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.contact-icon {
  width: 1rem;
  height: 1rem;
}

.contact-separator {
  display: none;
}

@media (min-width: 640px) {
  .contact-separator {
    display: block;
  }
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-bottom: 4rem;
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-item {
  text-align: center;
}

.stat-icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1rem;
  border-radius: 1rem;
  background-color: #f3f4f6;
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-icon i {
  width: 2rem;
  height: 2rem;
  color: #374151;
}

.stat-number {
  font-size: 1.875rem;
  font-weight: 900;
  color: #1f2937;
  margin-bottom: 0.25rem;
}

@media (min-width: 768px) {
  .stat-number {
    font-size: 2.25rem;
  }
}

.stat-label {
  font-size: 0.875rem;
  color: #6b7280;
  font-weight: 500;
}

/* Hero Buttons */
.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  justify-content: center;
  align-items: center;
  margin-bottom: 4rem;
}

@media (min-width: 640px) {
  .hero-buttons {
    flex-direction: row;
  }
}

/* Social Links */
.social-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
}

.social-link {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 1rem;
  background-color: #f3f4f6;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #6b7280;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.social-link:hover {
  background-color: #1f2937;
  color: white;
  transform: scale(1.1);
}

.social-link i {
  width: 1.5rem;
  height: 1.5rem;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

.scroll-indicator i {
  width: 1.5rem;
  height: 1.5rem;
  color: #9ca3af;
}

@keyframes bounce {
  0%,
  20%,
  53%,
  80%,
  100% {
    transform: translateX(-50%) translateY(0);
  }
  40%,
  43% {
    transform: translateX(-50%) translateY(-30px);
  }
  70% {
    transform: translateX(-50%) translateY(-15px);
  }
  90% {
    transform: translateX(-50%) translateY(-4px);
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 2.5rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.btn:active {
  transform: translateY(0);
  transition-duration: 0.1s;
}

.btn-primary {
  background-color: #1f2937;
  color: white;
}

.btn-primary:hover {
  background-color: #111827;
}

.btn-outline {
  background-color: transparent;
  color: #374151;
  border: 2px solid #d1d5db;
}

.btn-outline:hover {
  background-color: #f9fafb;
  border-color: #1f2937;
}

.btn-project {
  width: 100%;
  background-color: #1f2937;
  color: white;
  border-radius: 1rem;
  padding: 0.75rem 1rem;
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: auto;
}

.btn-project:hover {
  background-color: #111827;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.btn i {
  width: 1.25rem;
  height: 1.25rem;
  margin-left: 0.5rem;
}

/* Sections */
.section {
  padding: 8rem 0;
}

@media (min-width: 1024px) {
  .section {
    padding: 8rem 1.5rem;
  }
}

.section-gray {
  background-color: #f9fafb;
}

.section-header {
  text-align: center;
  margin-bottom: 5rem;
}

.section-title {
  font-size: 3rem;
  font-weight: 900;
  color: #1f2937;
  margin-bottom: 1.5rem;
  letter-spacing: -0.025em;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 3.75rem;
  }
}

.section-divider {
  width: 6rem;
  height: 4px;
  background-color: #1f2937;
  margin: 0 auto;
}

/* Cards */
.card {
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 1.5rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  transition: all 0.5s ease;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1), 0 40px 80px rgba(0, 0, 0, 0.06);
}

.card-content {
  padding: 2rem;
}

@media (min-width: 1024px) {
  .card-content {
    padding: 3rem;
  }
}

/* Summary */
.summary-text {
  font-size: 1.125rem;
  color: #374151;
  line-height: 1.75;
  max-width: 64rem;
  margin: 0 auto;
  text-align: justify;
}

/* Education */
.education-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.education-card .card-content {
  padding: 2rem;
}

@media (min-width: 1024px) {
  .education-card .card-content {
    padding: 3rem;
  }
}

.education-header {
  margin-bottom: 1.5rem;
}

.education-institution {
  font-size: 1.5rem;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 0.5rem;
}

.education-degree {
  font-size: 1.125rem;
  color: #374151;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.education-meta {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  color: #6b7280;
  font-weight: 500;
}

@media (min-width: 640px) {
  .education-meta {
    flex-direction: row;
    align-items: center;
    gap: 1rem;
  }
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.meta-item i {
  width: 1rem;
  height: 1rem;
}

.coursework {
  margin-top: 2rem;
}

.coursework-title {
  font-size: 0.75rem;
  font-weight: 700;
  color: #6b7280;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

/* Experience */
.experience-card .card-content {
  padding: 2.5rem;
}

@media (min-width: 1024px) {
  .experience-card .card-content {
    padding: 4rem;
  }
}

.experience-layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

@media (min-width: 1024px) {
  .experience-layout {
    flex-direction: row;
    gap: 3rem;
  }
}

.experience-icon {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

@media (min-width: 1024px) {
  .experience-icon {
    margin-bottom: 0;
  }
}

.icon-container {
  width: 5rem;
  height: 5rem;
  border-radius: 1.5rem;
  background-color: #1f2937;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  flex-shrink: 0;
}

.icon-container i {
  width: 2.5rem;
  height: 2.5rem;
  color: white;
}

.experience-content {
  flex: 1;
}

.experience-header {
  margin-bottom: 1.5rem;
}

@media (min-width: 1024px) {
  .experience-header {
    margin-bottom: 2rem;
  }
}

.experience-title {
  font-size: 1.5rem;
  font-weight: 900;
  color: #1f2937;
  margin-bottom: 0.75rem;
}

@media (min-width: 1024px) {
  .experience-title {
    font-size: 1.875rem;
  }
}

.experience-company {
  font-size: 1.25rem;
  color: #374151;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.experience-meta {
  color: #6b7280;
  font-weight: 500;
}

.experience-meta span:nth-child(2) {
  margin: 0 1rem;
}

.achievements {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
}

.achievement-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.5rem;
  border-radius: 1rem;
  background-color: #f9fafb;
  transition: all 0.3s ease;
}

.achievement-item:hover {
  background-color: white;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.achievement-bullet {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background-color: #1f2937;
  margin-top: 0.5rem;
  flex-shrink: 0;
}

.achievement-item p {
  color: #374151;
  line-height: 1.75;
  font-weight: 500;
}

/* Projects */
.projects-grid {
  display: grid;
  gap: 2.5rem;
}

@media (min-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.project-card {
  transition: all 0.5s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
}

.project-card:hover {
  transform: translateY(-16px);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

.project-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
  /* Ensure consistent vertical alignment */
  vertical-align: middle;
}

.project-card .card-content {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.btn-project {
  width: 100%;
  background-color: #1f2937;
  color: white;
  border-radius: 1rem;
  padding: 0.75rem 1rem;
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: auto;
}

.project-icon {
  width: 4rem;
  height: 4rem;
  border-radius: 1rem;
  background-color: #1f2937;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  flex-shrink: 0;
}

.project-icon i {
  width: 2rem;
  height: 2rem;
  color: white;
}

.project-icon svg {
  width: 2rem;
  height: 2rem;
  stroke: white;
  fill: none;
  display: block;
}

.icon-container svg {
  width: 2.5rem;
  height: 2.5rem;
  stroke: white;
  fill: none;
  display: block;
}

.project-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #1f2937;
}

.project-period {
  color: #6b7280;
  font-size: 0.875rem;
  font-weight: 500;
}

.project-description {
  color: #374151;
  margin-bottom: 2rem;
  line-height: 1.75;
}

.project-metrics {
  margin-bottom: 2rem;
}

.metrics-title {
  font-size: 0.75rem;
  font-weight: 700;
  color: #6b7280;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.metrics-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.metric-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.75rem;
  border-radius: 0.75rem;
  background-color: #f9fafb;
}

.metric-bullet {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background-color: #1f2937;
  margin-top: 0.5rem;
  flex-shrink: 0;
}

.metric-item span {
  color: #374151;
  font-weight: 600;
  font-size: 0.875rem;
}

/* Skills */
.skills-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .skills-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.skill-card .card-content {
  padding: 2rem;
}

.skill-category {
  font-size: 1.25rem;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 1.5rem;
  text-transform: capitalize;
}

/* Badges */
.badge-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.75rem;
  background-color: #f3f4f6;
  color: #374151;
  border: 1px solid #e5e7eb;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.badge:hover {
  background-color: #e5e7eb;
}

.badge-blue {
  background-color: #dbeafe;
  color: #1e40af;
}

.badge-green {
  background-color: #dcfce7;
  color: #166534;
}

/* Leadership */
.leadership-card .card-content {
  padding: 2.5rem;
}

@media (min-width: 1024px) {
  .leadership-card .card-content {
    padding: 4rem;
  }
}

.leadership-layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

@media (min-width: 1024px) {
  .leadership-layout {
    flex-direction: row;
    gap: 3rem;
  }
}

.leadership-icon {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

@media (min-width: 1024px) {
  .leadership-icon {
    margin-bottom: 0;
  }
}

.leadership-content {
  flex: 1;
}

.leadership-header {
  margin-bottom: 2rem;
}

.leadership-title {
  font-size: 1.5rem;
  font-weight: 900;
  color: #1f2937;
  margin-bottom: 0.75rem;
}

@media (min-width: 1024px) {
  .leadership-title {
    font-size: 1.875rem;
  }
}

.leadership-organization {
  font-size: 1.25rem;
  color: #374151;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.leadership-meta {
  color: #6b7280;
  font-weight: 500;
}

.leadership-meta span:nth-child(2) {
  margin: 0 1rem;
}

/* Achievements */
.achievement-card .card-content {
  padding: 2.5rem;
}

.achievement-layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

@media (min-width: 1024px) {
  .achievement-layout {
    flex-direction: row;
    gap: 3rem;
  }
}

.achievement-icon {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

@media (min-width: 1024px) {
  .achievement-icon {
    margin-bottom: 0;
  }
}

.achievement-content {
  flex: 1;
}

.achievement-header {
  margin-bottom: 1.5rem;
}

.achievement-title {
  font-size: 1.5rem;
  font-weight: 900;
  color: #1f2937;
  margin-bottom: 0.5rem;
}

@media (min-width: 1024px) {
  .achievement-title {
    font-size: 1.875rem;
  }
}

.achievement-subtitle {
  font-size: 1.25rem;
  color: #6b7280;
  font-weight: 600;
  margin-bottom: 1rem;
}

.achievement-description {
  color: #374151;
  margin-bottom: 2rem;
  line-height: 1.75;
  font-size: 1.125rem;
}

.achievement-metrics {
  display: grid;
  gap: 1rem;
}

@media (min-width: 768px) {
  .achievement-metrics {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .achievement-metrics {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Publications */
.publications-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.publication-card .card-content {
  padding: 2rem;
}

@media (min-width: 1024px) {
  .publication-card .card-content {
    padding: 3rem;
  }
}

.publication-layout {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (min-width: 1024px) {
  .publication-layout {
    flex-direction: row;
    gap: 2rem;
  }
}

.publication-icon {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

@media (min-width: 1024px) {
  .publication-icon {
    margin-bottom: 0;
  }
}

.publication-icon .icon-container {
  width: 4rem;
  height: 4rem;
  border-radius: 1rem;
}

.publication-icon .icon-container i {
  width: 2rem;
  height: 2rem;
}

.publication-content {
  flex: 1;
}

.publication-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

@media (min-width: 1024px) {
  .publication-header {
    gap: 1rem;
    margin-bottom: 1rem;
  }
}

.publication-number {
  font-size: 0.875rem;
  font-weight: 700;
  color: #6b7280;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.publication-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #1f2937;
  line-height: 1.4;
  margin-bottom: 0.75rem;
}

.publication-authors {
  color: #374151;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.publication-venue {
  color: #6b7280;
  margin-bottom: 0.5rem;
}

.publication-doi {
  color: #6b7280;
}

.publication-status {
  color: #2563eb;
  font-weight: 500;
  margin-top: 0.5rem;
}

/* Contact */
.contact-card {
  max-width: 80rem;
  margin: 0 auto;
}

.contact-content {
  text-align: center;
}

.contact-title {
  font-size: 3rem;
  font-weight: 900;
  color: #1f2937;
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .contact-title {
    font-size: 3.75rem;
  }
}

.contact-description {
  font-size: 1.25rem;
  color: #6b7280;
  margin-bottom: 4rem;
  line-height: 1.75;
  max-width: 48rem;
  margin-left: auto;
  margin-right: auto;
}

.contact-methods {
  display: grid;
  gap: 2rem;
  margin-bottom: 4rem;
}

@media (min-width: 768px) {
  .contact-methods {
    grid-template-columns: repeat(2, 1fr);
  }
}

.contact-method {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 2rem;
  border-radius: 1rem;
  background-color: #f9fafb;
  text-decoration: none;
  color: #1f2937;
  transition: all 0.3s ease;
}

.contact-method:hover {
  background-color: #f3f4f6;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.contact-method i {
  width: 1.5rem;
  height: 1.5rem;
  color: #374151;
}

.contact-method span {
  font-weight: 600;
}

.contact-buttons {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  justify-content: center;
}

@media (min-width: 640px) {
  .contact-buttons {
    flex-direction: row;
  }
}

/* Footer */
.footer {
  padding: 4rem 0;
  border-top: 1px solid #e5e7eb;
  background-color: white;
}

.footer-content {
  text-align: center;
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: 900;
  color: #1f2937;
  margin-bottom: 1rem;
}

.footer-text {
  color: #6b7280;
}

/* Responsive Design */
@media (max-width: 640px) {
  .hero-title {
    font-size: 2rem;
    letter-spacing: -0.015em;
  }

  .section-title {
    font-size: 2.5rem;
  }

  .card-content {
    padding: 1.5rem;
  }

  .experience-card .card-content,
  .leadership-card .card-content,
  .achievement-card .card-content {
    padding: 1.5rem;
  }

  .publication-card .card-content {
    padding: 1.5rem;
  }
}

/* Animations */
@keyframes pulse-minimal {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.pulse-minimal {
  animation: pulse-minimal 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Focus States */
button:focus-visible,
a:focus-visible {
  outline: 2px solid rgba(0, 0, 0, 0.5);
  outline-offset: 2px;
  border-radius: 8px;
}

/* Selection Color */
::selection {
  background-color: rgba(0, 0, 0, 0.1);
  color: inherit;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.3);
}