/*
  Academic website of Tamás Linder
  All presentation is centralized here; the HTML files contain structure and content only.
*/
:root {
  --queen-purple: #613f99;
  --queen-purple-deep: #3d2863;
  --queen-purple-soft: #f3eff8;
  --queen-gold: #d5a928;
  --ink: #24242a;
  --muted: #62636b;
  --line: #dedde3;
  --line-strong: #c9c7d0;
  --surface: #ffffff;
  --surface-soft: #f7f6f9;
  --link: #315f8c;
  --link-hover: #613f99;
  --focus: #b8860b;
  --shadow: 0 10px 28px rgba(38, 28, 56, 0.10);
  --radius: 8px;
  --max-width: 1040px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  height: auto;
}

/* Modern text links: no permanent underline, but an unmistakable hover/focus cue. */
a {
  color: var(--link);
  text-decoration: none;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
  transition: color 150ms ease, background-color 150ms ease, border-color 150ms ease;
}

a:visited {
  color: var(--link);
}

a:hover {
  color: var(--link-hover);
  text-decoration: underline;
}

a:focus-visible {
  color: var(--link-hover);
  outline: 3px solid color-mix(in srgb, var(--focus) 48%, transparent);
  outline-offset: 3px;
  border-radius: 2px;
}

main p a,
main li a,
address a,
.abstract-meta a {
  font-weight: 560;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.7rem 1rem;
  background: var(--surface);
  color: var(--ink);
  border: 2px solid var(--queen-purple);
  border-radius: 4px;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.institution-bar {
  color: #fff;
  background: var(--queen-purple-deep);
}

.institution-bar .inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.58rem 1.35rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.91rem;
}

.institution-bar a,
.institution-bar a:visited {
  color: #fff;
  font-weight: 520;
}

.institution-bar a:hover {
  color: #fff;
  text-decoration-color: var(--queen-gold);
}

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.site-title-row {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.55rem 1.35rem 1.2rem;
}

.site-title {
  margin: 0;
  color: var(--queen-purple-deep);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.1rem, 5vw, 3.1rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
}

.site-subtitle {
  margin: 0.38rem 0 0;
  color: var(--muted);
  font-size: 1.02rem;
}

.site-nav {
  background: var(--surface-soft);
  border-top: 1px solid var(--line);
}

.site-nav ul {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.1rem;
  list-style: none;
  display: flex;
  gap: 0.12rem;
  flex-wrap: wrap;
}

.site-nav a,
.site-nav a:visited {
  display: block;
  padding: 0.76rem 0.82rem 0.7rem;
  color: var(--ink);
  border-bottom: 3px solid transparent;
  font-size: 0.96rem;
  font-weight: 540;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--queen-purple-deep);
  background: var(--surface);
  text-decoration: none;
}

.site-nav a[aria-current="page"] {
  color: var(--queen-purple-deep);
  border-bottom-color: var(--queen-gold);
  font-weight: 700;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.35rem 1.35rem 3.7rem;
}

.page-heading {
  margin: 0 0 1.65rem;
  padding-bottom: 0.58rem;
  color: var(--queen-purple-deep);
  border-bottom: 2px solid var(--queen-gold);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.75rem, 4vw, 2.3rem);
  line-height: 1.2;
}

.home-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 230px;
  gap: 3rem;
  align-items: start;
}

.home-photo {
  margin: 0;
}

.home-photo img {
  display: block;
  width: 230px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.contact-block {
  font-style: normal;
}

.contact-block p {
  margin: 0 0 1.08rem;
}

.contact-block a {
  display: inline;
  padding: 0.02em 0.05em;
  border-radius: 3px;
}

.lead {
  font-size: 1.09rem;
}

.section-card {
  margin-top: 2.15rem;
  padding: 1.3rem 1.45rem;
  background: var(--queen-purple-soft);
  border: 1px solid #e5ddee;
  border-left: 4px solid var(--queen-purple);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.section-card h2,
.content-section h2 {
  margin: 0 0 0.68rem;
  color: var(--queen-purple-deep);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.37rem;
}

.section-card ul {
  margin: 0.4rem 0 0.15rem;
  padding-left: 1.35rem;
}

.quick-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 2.15rem;
}

.quick-links a,
.quick-links a:visited {
  position: relative;
  display: block;
  padding: 0.9rem 2.35rem 0.9rem 1.05rem;
  color: var(--queen-purple-deep);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 2px 8px rgba(38, 28, 56, 0.04);
  font-weight: 680;
}

.quick-links a::after {
  content: "→";
  position: absolute;
  right: 1rem;
  color: var(--queen-purple);
  transition: transform 150ms ease;
}

.quick-links a:hover,
.quick-links a:focus-visible {
  color: var(--queen-purple-deep);
  background: var(--queen-purple-soft);
  border-color: #b9a8ce;
  text-decoration: none;
}

.quick-links a:hover::after,
.quick-links a:focus-visible::after {
  transform: translateX(3px);
}

.prose {
  max-width: 790px;
}

.prose p {
  margin: 0 0 1.18rem;
}

.content-section {
  margin: 0 0 2.1rem;
}

.person-list {
  margin: 0.58rem 0 0;
  padding-left: 1.4rem;
}

.person-list li {
  margin: 0.46rem 0;
  padding-left: 0.15rem;
}

.publication-nav {
  margin: -0.3rem 0 2.1rem;
  padding: 0.85rem 1rem;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.publication-nav a {
  display: inline-block;
  margin: 0.15rem 1rem 0.15rem 0;
  white-space: nowrap;
}

.publication-section {
  scroll-margin-top: 1rem;
  margin: 0 0 2.7rem;
}

.publication-section h2 {
  margin: 0 0 1rem;
  padding-bottom: 0.38rem;
  color: var(--queen-purple-deep);
  border-bottom: 1px solid var(--line);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.47rem;
}

.publication-list {
  margin: 0;
  padding-left: 1.55rem;
}

.publication-list li {
  margin: 0 0 1.08rem;
  padding-left: 0.25rem;
}

.publication-list p {
  display: none;
}

.publication-list strong {
  font-weight: 680;
}

.publication-list em {
  color: #36363d;
}

.copyright-note {
  margin-top: 2.5rem;
  padding: 1rem 1.1rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
}

.abstract-meta {
  color: var(--muted);
  font-size: 0.95rem;
}

.abstract-authors {
  font-weight: 650;
}

.back-link {
  margin-top: 2rem;
}

.back-link a::before {
  content: "← ";
}

.site-footer {
  background: var(--surface-soft);
  border-top: 1px solid var(--line);
}

.site-footer .inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.3rem 1.35rem;
  color: var(--muted);
  font-size: 0.88rem;
}

@media (max-width: 700px) {
  body {
    font-size: 16px;
  }

  .institution-bar .inner {
    display: block;
  }

  .institution-bar .inner span {
    display: block;
  }

  .site-title-row {
    padding-top: 1.2rem;
  }

  .site-nav ul {
    padding: 0 0.55rem;
  }

  .site-nav a {
    padding: 0.68rem 0.58rem;
  }

  main {
    padding-top: 1.7rem;
  }

  .home-grid {
    grid-template-columns: 1fr;
    gap: 1.6rem;
  }

  .home-photo {
    order: -1;
  }

  .home-photo img {
    width: min(210px, 65vw);
  }

  .quick-links {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}

@media print {
  .institution-bar,
  .site-nav,
  .site-footer,
  .skip-link,
  .quick-links {
    display: none;
  }

  main {
    max-width: none;
    padding: 0;
  }

  a,
  a:visited {
    color: inherit;
    text-decoration: none;
  }
}