@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;700&display=swap');

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

html {
  font-size: 16px;
}

body {
  font-family: 'Roboto', sans-serif;
  background: #ffffff;
  color: #111111;
  line-height: 1.35;
  cursor: default;
  font-size: 1rem;
}

nav {
  display: flex;
  justify-content: center;
  gap: clamp(16px, 2vw, 32px);
  padding: 10px clamp(12px, 2vw, 24px);
  border-bottom: 1px solid #e5e5e5;
  flex-wrap: wrap;
  align-items: center;
}

nav a {
  text-decoration: none;
  color: #111111;
  font-size: clamp(12px, 1.5vw, 14px);
  letter-spacing: 0.05em;
  text-transform: lowercase;
  font-family: 'Roboto', sans-serif;
  white-space: nowrap;
}

nav a:hover {
  opacity: 0.6;
}

.nav-more {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.nav-more-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  color: #111111;
  font-size: clamp(12px, 1.5vw, 14px);
  letter-spacing: 0.05em;
  text-transform: lowercase;
  font-family: 'Roboto', sans-serif;
  cursor: pointer;
  padding: 0;
}

.nav-more-btn:hover {
  opacity: 0.6;
}

.nav-more-menu {
  position: absolute;
  top: 100%;
  right: 0;
  background: #ffffff;
  border: 1px solid #e5e5e5;
  border-radius: 6px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  min-width: 140px;
  display: none;
  padding: 8px 0;
  z-index: 10;
}

.nav-more-menu a {
  display: block;
  padding: 8px 14px;
  color: #111111;
}

.nav-more-menu a:hover {
  background: #f5f5f5;
  opacity: 1;
}

.nav-more:hover .nav-more-menu,
.nav-more:focus-within .nav-more-menu {
  display: block;
}

.nav-more.open .nav-more-menu {
  display: block;
}

main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 12px clamp(16px, 3vw, 24px) clamp(16px, 3vw, 24px) clamp(16px, 3vw, 24px);
}

.page-title {
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 16px;
}

.simple-text {
  max-width: 700px;
  font-size: clamp(12px, 1.5vw, 13px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(150px, 220px) 1fr;
  gap: clamp(16px, 3vw, 28px);
  align-items: start;
}

.hero img {
  width: 100%;
  border-radius: 2px;
  object-fit: cover;
}

.contact-images img {
  width: 85%;
}

.hero img:not(:last-child) {
  margin-bottom: 6px;
}

.section {
  margin-top: 16px;
}

h2 {
  font-size: clamp(16px, 2vw, 18px);
  font-weight: 400;
  margin-bottom: 8px;
  text-decoration: none;
}

.section h2 {
  font-size: clamp(16px, 2vw, 18px);
  font-weight: 400;
  margin-bottom: 8px;
  text-decoration: none;
}

.section h3 {
  font-size: clamp(12px, 1.5vw, 13px);
  font-weight: 500;
  margin-bottom: 5px;
  color: #111111;
}

h4 {
  font-size: clamp(11px, 1.4vw, 12px);
  font-weight: 500;
  margin-bottom: 4px;
  color: #111111;
}

.section p {
  max-width: 700px;
}

.list {
  margin-top: 12px;
}

.list li {
  margin-bottom: 8px;
}

.experience-item {
  margin-bottom: 32px;
}

.experience-item:last-child {
  margin-bottom: 0;
}

.experience-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
}

.job-title {
  font-weight: 500;
}

.company {
  font-weight: 400;
}

.company a {
  color: #111111;
  text-decoration: none;
}

.company a:hover {
  text-decoration: underline;
}

.date {
  font-size: 14px;
  color: #666666;
  font-weight: 400;
}

.experience-list {
  list-style-type: disc;
  margin-left: 20px;
  max-width: 700px;
}

.experience-list li {
  margin-bottom: 6px;
  line-height: 1.5;
}

.project-category {
  margin-bottom: 12px;
}

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

.project-category h3 {
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 4px;
  color: #111111;
}

.project-list {
  list-style-type: disc;
  margin-left: 20px;
  max-width: 700px;
}

.project-list li {
  margin-bottom: 2px;
  line-height: 1.35;
  font-size: clamp(12px, 1.5vw, 13px);
}

.project-list .project-list {
  margin-top: 4px;
  margin-left: 20px;
}

.research-images {
  margin-top: 24px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.research-images img {
  max-width: 100%;
  height: auto;
  border-radius: 2px;
  flex: 1 1 300px;
}

/* GitHub repo cards responsive */
.section a img {
  max-width: 100%;
  height: auto;
  display: block;
  margin-bottom: 16px;
}

/* Responsive breakpoints */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  .hero {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .hero > div:first-child {
    display: flex;
    gap: 12px;
    justify-content: center;
  }
  
  .hero > div:first-child img {
    width: auto;
    max-width: 30%;
    height: auto;
  }
  
  .contact-images {
    display: flex;
    gap: 12px;
    justify-content: center;
  }
  
  .contact-images img {
    width: auto;
    max-width: 45%;
  }
  
  nav {
    gap: 12px;
    padding: 8px 12px;
  }
  
  main {
    padding: 12px 16px 16px 16px;
  }
  
  .section a img {
    width: 100%;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 13px;
  }
  
  .hero > div:first-child {
    flex-direction: column;
    align-items: center;
  }
  
  .hero > div:first-child img {
    max-width: 80%;
  }
  
  .contact-images {
    flex-direction: column;
    align-items: center;
  }
  
  .contact-images img {
    max-width: 80%;
  }
  
  nav {
    gap: 8px;
    font-size: 11px;
  }
}