:root {
  color-scheme: light;
  --ink: #1a1a1a;
  --muted: #5f6b73;
  --accent: #2f4b7c;
  --accent-light: #4a6fa5;
  --highlight: #d65a31;
  --bg: #f7f7f4;
  --surface: #ffffff;
  --border: #e2e2dd;
  --gradient-start: rgba(47, 75, 124, 0.08);
  --gradient-end: rgba(241, 231, 220, 0.6);
  --shadow: 0 10px 30px rgba(22, 26, 29, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Work Sans", "Helvetica Neue", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at top right, #fffaf5 0%, var(--bg) 40%, #efe4d6 100%);
  min-height: 100vh;
  line-height: 1.6;
}

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

a:hover {
  text-decoration: underline;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  max-width: 960px;
  margin: 40px auto 16px;
  padding: 0 24px;
}

.site-title a {
  font-family: "Source Serif 4", "Times New Roman", serif;
  font-size: 1.6rem;
  color: var(--ink);
}

.site-subtitle {
  display: block;
  font-size: 0.95rem;
  color: var(--muted);
}

.site-nav {
  display: flex;
  gap: 18px;
  font-size: 0.98rem;
}

.site-nav a {
  color: var(--ink);
}

.site-nav .is-active {
  color: var(--accent);
  font-weight: 500;
}

.page {
  max-width: 960px;
  margin: 0 auto;
  padding: 12px 24px 64px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

@media (max-width: 640px) {
  .page {
    padding: 12px 16px 40px;
    gap: 24px;
  }
}

.hero {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 48px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

@media (max-width: 768px) {
  .hero {
    padding: 32px 20px;
    border-radius: 16px;
  }
}

.delaunay-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.7;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -60px -80px auto;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(47, 75, 124, 0.06);
  pointer-events: none;
}

.hero__content {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero__text {
  max-width: 600px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--border);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.hero h1 {
  font-family: "Source Serif 4", "Times New Roman", serif;
  margin: 0 0 16px;
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.2;
}

@media (max-width: 640px) {
  .hero h1 {
    font-size: 1.8rem;
  }
}

.hero__lead {
  margin: 0 0 16px;
  font-size: 1.05rem;
  color: var(--ink);
  line-height: 1.6;
}

.hero__description {
  margin: 0 0 12px;
  color: var(--muted);
  line-height: 1.7;
  max-width: 700px;
}

.hero__description:last-of-type {
  margin-bottom: 0;
}

.hero__description a {
  color: var(--accent);
  font-weight: 500;
}

.hero__description a:hover {
  color: var(--accent-light);
}

.hero__description strong {
  color: var(--ink);
  font-weight: 500;
}

.work-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 24px 0;
  padding: 20px 0;
  border-top: 1px solid rgba(47, 75, 124, 0.1);
  border-bottom: 1px solid rgba(47, 75, 124, 0.1);
}

.work-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.work-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  min-width: 100px;
  flex-shrink: 0;
}

.work-content {
  color: var(--muted);
  line-height: 1.6;
  flex: 1;
}

.work-content a {
  color: var(--accent);
  font-weight: 500;
}

.work-content a:hover {
  color: var(--accent-light);
}

@media (max-width: 640px) {
  .work-item {
    flex-direction: column;
    gap: 4px;
  }
  
  .work-label {
    min-width: auto;
  }
}

.skills-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.skill-tag {
  display: inline-flex;
  padding: 6px 14px;
  background: rgba(47, 75, 124, 0.1);
  color: var(--accent);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid rgba(47, 75, 124, 0.2);
  transition: all 0.2s ease;
}

.skill-tag:hover {
  background: var(--accent);
  color: white;
  transform: translateY(-1px);
}

.hero__image {
  flex-shrink: 0;
}

.profile-photo {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid white;
  box-shadow: 0 8px 24px rgba(47, 75, 124, 0.15);
}

@media (max-width: 768px) {
  .hero__content {
    grid-template-columns: 1fr;
    gap: 24px;
    text-align: center;
  }
  
  .hero__text {
    max-width: 100%;
  }
  
  .hero__image {
    justify-self: center;
    max-width: 100%;
  }
  
  .hero__lead {
    font-size: 1rem;
  }
  
  .hero__description {
    max-width: 100%;
    font-size: 0.95rem;
  }
}

@media (max-width: 540px) {
  .hero__content {
    gap: 16px;
  }
  
  .hero__lead {
    font-size: 0.95rem;
  }
  
  .work-grid {
    gap: 12px;
    padding: 16px 0;
    margin: 16px 0;
  }
  
  .work-label {
    font-size: 0.8rem;
    min-width: 90px;
  }
  
  .work-content {
    font-size: 0.9rem;
  }
  
  .skills-tags {
    gap: 6px;
    justify-content: center;
  }
  
  .skill-tag {
    font-size: 0.78rem;
    padding: 5px 10px;
  }
}

.content-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px 28px;
}

.content-block h2 {
  font-family: "Source Serif 4", "Times New Roman", serif;
  font-size: 1.4rem;
  margin-top: 0;
}

@media (max-width: 640px) {
  .content-block {
    border-radius: 12px;
    padding: 16px 18px;
  }
  
  .content-block h2 {
    font-size: 1.2rem;
    margin-bottom: 16px;
  }
}

.paper {
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}

.paper:last-child {
  border-bottom: none;
}

.paper__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.paper h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 500;
  line-height: 1.4;
  color: var(--ink);
  display: flex;
  align-items: flex-start;
  gap: 8px;
  flex: 1;
}

.paper__method {
  display: inline-flex;
  padding: 4px 12px;
  border-radius: 12px;
  background: rgba(47, 75, 124, 0.08);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 500;
  white-space: nowrap;
  letter-spacing: 0.02em;
  border: 1px solid rgba(47, 75, 124, 0.15);
}

@media (max-width: 640px) {
  .paper__header {
    flex-direction: column;
    gap: 8px;
  }
  
  .paper h3 {
    font-size: 1rem;
  }
  
  .paper__method {
    white-space: normal;
    display: inline-block;
    font-size: 0.75rem;
  }
  
  .paper__icon {
    font-size: 1rem;
  }
}

.paper__authors {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.95rem;
}

.paper__description {
  margin: 0 0 12px;
  color: var(--muted);
  line-height: 1.6;
}

@media (max-width: 640px) {
  .paper__authors {
    font-size: 0.9rem;
  }
  
  .paper__description {
    font-size: 0.93rem;
  }
}

.paper__links {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.paper__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--accent);
  color: white;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.paper__link:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(47, 75, 124, 0.2);
  text-decoration: none;
}

@media (max-width: 640px) {
  .paper__links {
    gap: 8px;
  }
  
  .paper__link {
    padding: 5px 12px;
    font-size: 0.85rem;
  }
}

.paper__status {
  display: inline-flex;
  padding: 6px 12px;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 6px;
  background: rgba(95, 107, 115, 0.08);
  color: var(--muted);
}

.paper__status--published {
  background: rgba(34, 139, 34, 0.1);
  color: #228B22;
}

.paper__status--review {
  background: rgba(214, 90, 49, 0.1);
  color: var(--highlight);
}

.paper__status--wp {
  background: rgba(47, 75, 124, 0.1);
  color: var(--accent);
}

.paper__status--wip {
  background: rgba(95, 107, 115, 0.1);
  color: var(--muted);
}

.contact h2 {
  margin-top: 0;
  margin-bottom: 24px;
  font-family: "Source Serif 4", "Times New Roman", serif;
  font-size: 1.4rem;
}

.contact__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.contact__item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.contact__icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.contact__label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 4px;
}

.contact__item a {
  font-size: 0.95rem;
}

.site-footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  padding: 24px 16px 40px;
}

.cv-section {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.cv-section:last-child {
  border-bottom: none;
}

.cv-section h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--ink);
}

.cv-section p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.iframe-container {
  position: relative;
  width: 100%;
  padding-bottom: 141.4%; /* Approximate 16:9 ratio with space for PDF */
  height: 0;
  overflow: hidden;
  border-radius: 8px;
}

.iframe-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

@media (max-width: 768px) {
  .iframe-container {
    padding-bottom: 150%;
  }
}

@media (max-width: 720px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    margin: 24px auto 12px;
    gap: 12px;
  }
  
  .site-title a {
    font-size: 1.3rem;
  }
  
  .site-subtitle {
    font-size: 0.9rem;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .site-header {
    padding: 0 12px;
  }
  
  .site-title a {
    font-size: 1.1rem;
  }
}