:root {
  --bg-color: #030305;
  /* Deep, almost black background */
  --card-bg: #121214;
  /* Slightly lighter for cards */
  --text-primary: #EDEDED;
  --text-secondary: #A1A1AA;
  --accent-color: #6366F1;
  /* Indigo accent */
  --accent-glow: rgba(99, 102, 241, 0.4);
  --gradient-1: linear-gradient(135deg, #6366F1 0%, #A855F7 100%);
  --nav-bg: rgba(3, 3, 5, 0.8);
  --border-color: #27272A;
  --font-main: 'Inter', sans-serif;
  --font-heading: 'Outfit', sans-serif;
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

section {
  padding: 100px 0;
  position: relative;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

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

.section-label {
  display: block;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-color);
  margin-bottom: 12px;
  font-weight: 600;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
}

.accent {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
}

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

.nav-cta {
  background: rgba(255, 255, 255, 0.1);
  padding: 8px 20px;
  border-radius: 20px;
  color: var(--text-primary) !important;
}

.nav-cta:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Language Toggle Button */
.lang-toggle {
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  padding: 6px 14px;
  border-radius: 16px;
  cursor: pointer;
  transition: var(--transition);
  margin-right: 16px;
}

.lang-toggle .lang-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-color);
}

.lang-toggle:hover {
  background: rgba(99, 102, 241, 0.25);
  border-color: rgba(99, 102, 241, 0.5);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 30px;
  height: 24px;
  position: relative;
}

.nav-toggle span:nth-child(1) {
  transform-origin: top left;
}

.nav-toggle span:nth-child(3) {
  transform-origin: bottom left;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg);
}

.nav-links.active {
  display: flex !important;
  flex-direction: column;
  position: absolute;
  top: 70px;
  right: 0;
  width: 100%;
  background: var(--card-bg);
  padding: 20px;
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.navbar.scrolled {
  background: rgba(3, 3, 5, 0.95);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

/* Animations */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* Hero Section */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: float 10s infinite ease-in-out;
}

.orb-1 {
  width: 300px;
  height: 300px;
  background: #4F46E5;
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: #A855F7;
  bottom: 10%;
  right: 10%;
  animation-delay: -2s;
}

.orb-3 {
  width: 200px;
  height: 200px;
  background: #EC4899;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -4s;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0) scale(1);
  }

  50% {
    transform: translateY(-20px) scale(1.05);
  }
}

.grid-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  mask-image: radial-gradient(circle at center, black 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(circle at center, black 40%, transparent 80%);
}

.hero-content {
  z-index: 1;
  max-width: 800px;
  padding: 0 24px;
}

.hero-avatar {
  margin-bottom: 24px;
}

.avatar-img {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid rgba(99, 102, 241, 0.5);
  box-shadow: 0 0 30px rgba(99, 102, 241, 0.3);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.875rem;
  color: #818CF8;
  margin-bottom: 24px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: #818CF8;
  border-radius: 50%;
  box-shadow: 0 0 10px #818CF8;
}

.hero-name {
  font-family: var(--font-heading);
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 16px;
}

.name-line {
  display: block;
}

.hero-title {
  font-size: 1.25rem;
  color: var(--text-primary);
  font-weight: 500;
  margin-bottom: 16px;
}

.hero-tagline {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 32px;
}

.hero-socials {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 40px;
}

.social-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  font-weight: 500;
  font-size: 0.9rem;
}

.social-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-primary {
  display: inline-block;
  padding: 14px 32px;
  background: var(--text-primary);
  color: var(--bg-color);
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  margin-right: 16px;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.2);
}

.btn-secondary {
  display: inline-block;
  padding: 14px 32px;
  background: transparent;
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 0.8rem;
  opacity: 0.7;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--text-secondary), transparent);
}

/* About Section */
.about-grid {
  max-width: 800px;
  margin: 0 auto;
}

.about-text {
  max-width: 760px;
}

.about-text p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 20px;
}

.about-text p:last-child {
  margin-bottom: 0;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.stat-card {
  background: var(--card-bg);
  padding: 24px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  text-align: center;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--accent-color);
  transform: translateY(-5px);
}

.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Timeline / Experience */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 20px;
  height: 100%;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
  padding-left: 60px;
  margin-bottom: 40px;
}

.timeline-dot {
  position: absolute;
  left: 11px;
  top: 24px;
  width: 20px;
  height: 20px;
  background: var(--bg-color);
  border: 2px solid var(--accent-color);
  border-radius: 50%;
  z-index: 1;
}

.timeline-card {
  background: var(--card-bg);
  padding: 32px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.timeline-card:hover {
  border-color: rgba(99, 102, 241, 0.5);
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.3);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

.timeline-role {
  font-size: 1.25rem;
  font-weight: 700;
  font-family: var(--font-heading);
  color: var(--text-primary);
}

.timeline-company {
  color: var(--accent-color);
  font-weight: 500;
}

.timeline-period {
  font-size: 0.9rem;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.05);
  padding: 4px 12px;
  border-radius: 20px;
}

.timeline-desc {
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  font-size: 0.8rem;
  padding: 4px 10px;
  background: rgba(99, 102, 241, 0.1);
  color: #A5B4FC;
  border-radius: 4px;
}

/* Education Grid */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.edu-card {
  background: var(--card-bg);
  padding: 32px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  display: flex;
  gap: 20px;
  transition: var(--transition);
}

.edu-card:hover {
  background: rgba(255, 255, 255, 0.03);
}

.edu-icon {
  font-size: 2rem;
  background: rgba(255, 255, 255, 0.05);
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  flex-shrink: 0;
}

.edu-degree {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.edu-school {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.edu-period {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.edu-detail {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

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

.talk-card {
  background: var(--card-bg);
  padding: 24px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.talk-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-color);
}

.talk-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.talk-event {
  color: var(--accent-color);
  font-weight: 500;
}

.talk-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  margin-bottom: 12px;
  line-height: 1.3;
}

.talk-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  flex-grow: 1;
}

.talk-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.talk-link:hover {
  color: var(--accent-color);
}

/* Awards List */
.awards-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.award-item {
  display: flex;
  gap: 24px;
  align-items: center;
  background: var(--card-bg);
  padding: 24px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.award-rank {
  font-size: 2.5rem;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 50%;
  flex-shrink: 0;
}

.award-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  margin-bottom: 4px;
}

.award-org {
  font-size: 0.9rem;
  color: var(--accent-color);
  margin-bottom: 8px;
}

.award-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* Courses Grid */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.course-card {
  position: relative;
  background: var(--card-bg);
  border-radius: 16px;
  padding: 32px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: var(--transition);
}

.course-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.course-platform {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.udemy {
  background: #A435F0;
  color: white;
}

.hahow {
  background: #00BFA5;
  color: white;
}

.youtube {
  background: #FF0000;
  color: white;
}

.course-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  margin-bottom: 12px;
  line-height: 1.3;
}

.course-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.course-stats {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 500;
}

.course-link {
  display: block;
  text-align: center;
  background: rgba(255, 255, 255, 0.05);
  padding: 12px;
  border-radius: 8px;
  font-weight: 600;
  transition: 0.2s;
}

.course-link:hover {
  background: var(--text-primary);
  color: var(--bg-color);
}

/* Contact */
.contact-section {
  padding-bottom: 60px;
}

.contact-inner {
  background: linear-gradient(135deg, #1A1A20 0%, #121214 100%);
  padding: 80px 24px;
  border-radius: 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.contact-glow {
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
  z-index: 0;
}

.contact-title,
.contact-sub,
.contact-socials {
  position: relative;
  z-index: 1;
}

.contact-title {
  font-family: var(--font-heading);
  font-size: 3rem;
  margin-bottom: 24px;
}

.contact-sub {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
}

.contact-socials {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.contact-social-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 500;
  transition: 0.3s;
}

.contact-social-btn:hover {
  background: var(--text-primary);
  color: var(--bg-color);
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.contact-social-btn svg,
.social-btn svg {
  width: 20px;
  height: 20px;
}

.footer {
  text-align: center;
  padding: 40px 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-color);
}

/* LinkedIn-style Company Group */
.company-group .timeline-card {
  padding: 24px;
}

.company-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.timeline-company-name {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
}

.timeline-duration {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.role-item {
  padding: 16px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.role-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
  flex-wrap: wrap;
  gap: 8px;
}

.role-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.role-period {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.role-highlights {
  list-style: none;
  padding: 0;
  margin: 0 0 12px 0;
}

.role-highlights li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.role-highlights li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent-color);
  font-weight: bold;
}

.role-highlights strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* Talks List Style */
.talks-list {
  max-width: 800px;
  margin: 0 auto;
}

.talks-year-group {
  margin-bottom: 32px;
}

.talks-year-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent-color);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.talks-items {
  list-style: none;
  padding: 0;
  margin: 0;
}

.talk-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  flex-wrap: wrap;
}

.talk-item:last-child {
  border-bottom: none;
}

.talk-event-badge {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(99, 102, 241, 0.2);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent-color);
  white-space: nowrap;
  min-width: 120px;
  text-align: center;
}

.talk-item .talk-link {
  color: var(--text-primary);
  font-weight: 500;
  transition: var(--transition);
  flex: 1;
}

.talk-item .talk-link:hover {
  color: var(--accent-color);
}

/* Education icon styles */
.edu-icon img {
  max-width: 60px;
  height: auto;
  object-fit: contain;
}

/* Teaching Section */
.teaching-section {
  background: var(--bg-color);
}

.teaching-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 800px;
  margin: 0 auto;
}

.teaching-item {
  display: flex;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  align-items: flex-start;
}

.teaching-item:last-child {
  border-bottom: none;
}

.teaching-period {
  flex-shrink: 0;
  width: 100px;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-color);
  padding-top: 2px;
}

.teaching-body {
  flex: 1;
}

.teaching-org {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.teaching-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Skills Section */
.skills-section {
  background: var(--bg-color);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  max-width: 960px;
  margin: 0 auto;
}

.skill-category {
  padding: 22px 24px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
}

.skill-cat-title {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-color);
  margin-bottom: 12px;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-tag {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 4px 11px;
}

/* Education items in timeline */
.edu-item .timeline-card {
  padding: 16px 20px;
  opacity: 0.7;
}

.edu-item .timeline-role {
  font-size: 0.9rem;
}

.edu-dot {
  background: var(--text-secondary) !important;
  width: 10px !important;
  height: 10px !important;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-name {
    font-size: 2.5rem;
  }

  .nav-links {
    display: none;
    /* Mobile menu implementation usually requires JS toggle */
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background: var(--card-bg);
    flex-direction: column;
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  .lang-toggle {
    margin-right: 12px;
    padding: 4px 10px;
  }

  .lang-toggle .lang-text {
    font-size: 0.8rem;
  }

  .about-text {
    grid-template-columns: 1fr;
  }

  .timeline::before {
    left: 0;
  }

  .timeline-item {
    padding-left: 24px;
  }

  .timeline-dot {
    left: -9px;
  }

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

  .award-item {
    flex-direction: column;
    text-align: center;
  }

  .teaching-item {
    flex-direction: column;
    gap: 8px;
  }

  .teaching-period {
    width: auto;
  }
}