/* ---------- Tokens ---------- */
:root {
  --bg: #fdfdfd;
  --fg: #0f0f0f;
  --fg-muted: #5c5c5c;
  --border: rgba(15, 15, 15, 0.14);
  --accent: #0E4BEF;
  --nav-height: 64px;
  --side-pad: clamp(20px, 5vw, 56px);
  --font-sans: Helvetica, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d0d0d;
    --fg: #f2f2f2;
    --fg-muted: #a3a3a3;
    --border: rgba(255, 255, 255, 0.16);
    --accent: #7999ED;
  }
}
:root[data-theme="dark"] {
  --bg: #0d0d0d;
  --fg: #f2f2f2;
  --fg-muted: #a3a3a3;
  --border: rgba(255, 255, 255, 0.16);
  --accent: #7999ED;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-feature-settings: "cv02", "cv03", "cv04", "cv11";
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, p, address { margin: 0; }
a { color: inherit; }
img { max-width: 100%; display: block; }
.accent { color: var(--accent); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 100;
  transform: translateY(-100%);
  padding: 12px 20px;
  background: var(--fg);
  color: var(--bg);
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.15s ease;
}
.skip-link:focus-visible {
  transform: translateY(0);
  outline-color: var(--bg);
}

.wrap {
  padding-inline: var(--side-pad);
}

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  height: var(--nav-height);
  background: var(--bg);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease;
}
.nav.is-scrolled { border-bottom-color: var(--border); }
.nav__inner {
  padding-inline: var(--side-pad);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.nav__brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  transition: opacity 0.15s ease;
}
.nav__logo:hover { opacity: 0.7; }
.nav__logo img {
  display: block;
  height: 22px;
  width: auto;
}
:root[data-theme="dark"] .nav__logo img { filter: invert(1); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .nav__logo img { filter: invert(1); }
}
.nav__name {
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.18s ease, transform 0.18s ease;
  pointer-events: none;
}
.nav.is-scrolled .nav__name {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.5vw, 28px);
  font-size: 0.95rem;
  font-weight: 500;
}
.nav__links a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color 0.2s ease, opacity 0.15s ease;
}
.nav__links a:hover { border-color: var(--fg); opacity: 0.7; }
.nav__links .short { display: none; }
@media (max-width: 480px) {
  .nav__links .full { display: none; }
  .nav__links .short { display: inline; }
}
@media (max-width: 640px) {
  .nav__name { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  padding-top: clamp(40px, 8vh, 88px);
  padding-bottom: clamp(28px, 5vh, 56px);
}
.hero h1 {
  font-size: clamp(1.9rem, 1rem + 4.5vw, 4.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.18;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: center;
}
@media (min-width: 768px) {
  .hero__inner { grid-template-columns: 1fr 4fr; gap: clamp(24px, 3vw, 48px); }
}
.hero__photo {
  width: clamp(96px, 14vw, 200px);
  height: clamp(96px, 14vw, 200px);
  border-radius: 50%;
  object-fit: cover;
}

/* ---------- Dividers ---------- */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin-inline: var(--side-pad);
  scroll-margin-top: var(--nav-height);
}

/* ---------- Blocks ---------- */
.block { padding-block: clamp(28px, 5vh, 56px); }
.block__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
@media (min-width: 768px) {
  .block__grid { grid-template-columns: 1fr 4fr; gap: clamp(24px, 3vw, 48px); }
}
.block__title {
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.cv-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  padding: 7px 15px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--fg);
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: border-color 0.2s ease, opacity 0.15s ease;
}
.cv-download:hover { border-color: var(--fg); }
.cv-download:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.cv-download__icon {
  width: 9px;
  height: 9px;
  border-left: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-2px) rotate(-45deg);
  flex-shrink: 0;
}
.block__content p {
  font-size: 1rem;
  line-height: 1.75;
  max-width: 65ch;
}
.block__content p + p { margin-top: 1.1em; }
.block__content--cols {
  column-count: 1;
  column-gap: 48px;
}
/* Keep each paragraph whole; never split a line off into the next column. */
.block__content--cols p { break-inside: avoid; }
@media (min-width: 768px) {
  .block__content--cols { column-count: 2; }
}
.block__content em, .block__content i { font-style: italic; }
.block__content a {
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: opacity 0.15s ease;
}
.block__content a:hover { opacity: 0.7; }

/* ---------- CV accordion ---------- */
.cv-section {
  border-top: 1px solid var(--border);
}
.cv-section:last-of-type { border-bottom: 1px solid var(--border); }
.cv-section summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 20px;
  transition: opacity 0.15s ease;
}
.cv-section summary:hover { opacity: 0.7; }
.cv-section summary::-webkit-details-marker { display: none; }
.cv-section summary :is(h2, h3) {
  font-size: 1.05rem;
  font-weight: 700;
}
.cv-toggle {
  position: relative;
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}
.cv-toggle::before,
.cv-toggle::after {
  content: "";
  position: absolute;
  background: var(--fg);
  transition: transform 0.2s ease;
}
.cv-toggle::before {
  top: 50%;
  left: 0;
  width: 100%;
  height: 1.5px;
  transform: translateY(-50%);
}
.cv-toggle::after {
  left: 50%;
  top: 0;
  width: 1.5px;
  height: 100%;
  transform: translateX(-50%);
}
.cv-section[open] .cv-toggle::after { transform: translateX(-50%) scaleY(0); }
.cv-section__content { padding-bottom: 24px; }
.block__content .cv-entry {
  font-size: 1rem;
  line-height: 1.6;
  max-width: none;
}
.cv-entry + .cv-entry { margin-top: 10px; }
.cv-entry__title { font-weight: 700; }
.cv-entry__meta { color: var(--fg-muted); }
.placeholder {
  font-size: 0.95rem;
  font-style: italic;
  color: var(--fg-muted);
}
.legal-heading {
  font-size: 1.05rem;
  font-weight: 700;
  margin-top: 1.75em;
}
.legal-heading:first-of-type { margin-top: 1.25em; }
.legal-heading + p { margin-top: 0.5em; }

/* ---------- Contact ---------- */
.block__content--split {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
@media (min-width: 640px) {
  .block__content--split {
    flex-direction: row;
    gap: clamp(24px, 3vw, 48px);
  }
  .block__content--split > * { flex: 1 1 0; }
}
.contact-links {
  display: grid;
  grid-template-columns: repeat(2, auto);
  grid-template-rows: repeat(3, auto);
  grid-auto-flow: column;
  column-gap: 40px;
  row-gap: 8px;
}
.contact-links a {
  width: fit-content;
  text-decoration: underline;
  text-underline-offset: 3px;
  font-size: 1rem;
  transition: opacity 0.15s ease;
}
.contact-links a:hover { opacity: 0.7; }
address {
  font-style: normal;
  line-height: 1.75;
  color: var(--fg-muted);
  font-size: 0.95rem;
}

/* ---------- Updates ---------- */
.updates-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.updates-item {
  display: flex;
  gap: 24px;
  padding-block: 16px;
  border-top: 1px solid var(--border);
  scroll-margin-top: var(--nav-height);
}
.updates-item[hidden] {
  display: none;
}
.updates-date {
  flex: 0 0 140px;
  font-variant-numeric: tabular-nums;
  color: var(--fg-muted);
  font-size: 0.95rem;
}
.updates-text {
  flex: 1;
  font-size: 1rem;
  line-height: 1.6;
}
@media (max-width: 480px) {
  .updates-item { flex-direction: column; gap: 4px; }
  .updates-date { flex: none; }
}
.updates-more {
  display: block;
  margin-top: 24px;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--fg);
  background: none;
  border: none;
  padding: 0;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
  transition: opacity 0.15s ease;
}
.updates-more:hover { opacity: 0.7; }

/* ---------- Footer ---------- */
.footer__grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  padding-block: 18px;
}
.footer__copyright {
  font-size: 0.875rem;
  color: var(--fg-muted);
}
.footer__legal {
  display: flex;
  justify-content: flex-end;
  gap: 24px;
  font-size: 0.875rem;
}
.footer__legal a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color 0.2s ease, opacity 0.15s ease;
}
.footer__legal a:hover { border-color: var(--fg); opacity: 0.7; }

.theme-toggle {
  justify-self: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: none;
  background: var(--fg);
  padding: 0;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease;
}
.theme-toggle:hover { transform: scale(1.1); opacity: 0.7; }

@media (max-width: 560px) {
  .footer__grid {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 20px;
    text-align: center;
  }
  .footer__legal { justify-content: center; }
}

/* ---------- 404 ---------- */
.error-hero {
  min-height: calc(100dvh - var(--nav-height));
  display: flex;
  align-items: center;
}
.error-hero .wrap { padding-block: clamp(40px, 8vh, 88px); }
.error-hero h1 { display: flex; flex-direction: column; }
.error-code {
  font-size: clamp(4rem, 2rem + 10vw, 9rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
}
.error-title {
  font-size: clamp(1.5rem, 1rem + 2vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-top: 8px;
}
.error-text {
  margin-top: 16px;
  font-size: 1rem;
  color: var(--fg-muted);
  max-width: 45ch;
}
.error-link {
  display: inline-block;
  margin-top: 24px;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity 0.15s ease;
}
.error-link:hover { opacity: 0.7; }

/* ---------- Bibliography ---------- */
.bib-filter {
  width: 100%;
  max-width: 65ch;
  margin-top: clamp(20px, 4vw, 32px);
  margin-bottom: 8px;
  padding: 9px 14px;
  font: inherit;
  font-size: 0.95rem;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
}
.bib-filter:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.bib-count {
  font-size: 0.85rem;
  color: var(--fg-muted);
  margin-bottom: 4px;
}
.bib-entry { padding-block: 14px; max-width: 70ch; }
.bib-entry:not([hidden]) ~ .bib-entry:not([hidden]) { border-top: 1px solid var(--border); }
.bib-entry[hidden] { display: none; }
.bib-entry__cite { font-size: 1rem; line-height: 1.6; }
.bib-entry__cite cite { font-style: italic; }
.bib-entry__links {
  margin-top: 4px;
  font-size: 0.9rem;
}
.bib-entry__links a {
  text-decoration: underline;
  text-underline-offset: 2px;
  margin-right: 16px;
  transition: opacity 0.15s ease;
}
.bib-entry__links a:hover { opacity: 0.7; }
.bib-entry__note {
  margin-top: 8px;
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--fg-muted);
}
.bib-entry__note--stub { font-style: italic; }
.cv-section[hidden] { display: none; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .nav__name, .nav, .cv-toggle::before, .cv-toggle::after, .theme-toggle,
  .nav__logo, .nav__links a, .cv-section summary, .contact-links a,
  .updates-more, .footer__legal a, .block__content a, .skip-link,
  .cv-download, .cookie-banner button, .bib-filter, .bib-entry__links a {
    transition: none !important;
  }
}

/* ---------- Cookie banner ---------- */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px var(--side-pad);
  background: var(--bg);
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
}
.cookie-banner p { margin: 0; color: var(--fg-muted); }
.cookie-banner a { color: var(--accent); text-decoration: underline; }
.cookie-banner button {
  flex-shrink: 0;
  font: inherit;
  font-weight: 700;
  background: none;
  border: none;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
  transition: opacity 0.15s ease;
}
.cookie-banner button:hover { opacity: 0.7; }