/* Mirko Tritella · personal academic site
   Editorial, typographic, no JS. Two families: Newsreader (display) + Geist (text). */

@font-face {
  font-family: "Newsreader";
  src: url("fonts/newsreader-normal.woff2") format("woff2");
  font-weight: 200 800;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Newsreader";
  src: url("fonts/newsreader-italic.woff2") format("woff2");
  font-weight: 200 800;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "Geist";
  src: url("fonts/geist-normal.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #fbfaf8;
  --ink: #21262e;
  --muted: #6b7280;
  --faint: #9aa0a8;
  --hairline: #e4e1da;
  --accent: #1e4d8c;
  --accent-ink: #173e73;
  --figure-bg: #ffffff;
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "Geist", -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, monospace;
}

/* Dark theme: explicit choice via data-theme, or system preference as fallback */
:root[data-theme="dark"] {
  --bg: #17191d;
  --ink: #d9d6cf;
  --muted: #9297a0;
  --faint: #6e747d;
  --hairline: #2c2f35;
  --accent: #8db4e2;
  --accent-ink: #a9c8ee;
  --figure-bg: #fbfaf8;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #17191d;
    --ink: #d9d6cf;
    --muted: #9297a0;
    --faint: #6e747d;
    --hairline: #2c2f35;
    --accent: #8db4e2;
    --accent-ink: #a9c8ee;
    --figure-bg: #fbfaf8;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.container {
  max-width: 66rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  text-decoration-color: color-mix(in srgb, var(--accent) 45%, transparent);
  transition: color 120ms ease, text-decoration-color 120ms ease;
}
a:hover { color: var(--accent-ink); text-decoration-color: currentColor; }
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 1px;
}

::selection { background: color-mix(in srgb, var(--accent) 22%, transparent); }

/* ---------- Header ---------- */

.site-header {
  border-bottom: 1px solid var(--hairline);
}
.site-header .container {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.1rem;
  padding-bottom: 1.1rem;
}
.site-name {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
}
.site-nav {
  display: flex;
  gap: 1.4rem;
  font-size: 0.88rem;
}
.site-nav a {
  color: var(--muted);
  text-decoration: none;
}
.site-nav a:hover { color: var(--ink); }
@media (max-width: 640px) {
  .site-nav { gap: 1rem; }
  .site-nav .nav-secondary { display: none; }
}

.theme-toggle {
  background: none;
  border: 0;
  padding: 0.2rem;
  margin: 0;
  cursor: pointer;
  color: var(--muted);
  display: inline-flex;
  align-self: center;
  transition: color 120ms ease;
}
.theme-toggle:hover { color: var(--ink); }
.theme-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 1px;
}
.theme-toggle svg { width: 1rem; height: 1rem; display: block; }
/* Light shows moon, dark shows sun; follows system when no explicit choice */
.theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: block; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: none; }
}

/* ---------- Intro ---------- */

.intro {
  padding: 4.5rem 0 4rem;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2.5rem;
}
.intro-text { min-width: 0; }
.intro-photo {
  width: 9.5rem;
  height: 9.5rem;
  object-fit: cover;
  border-radius: 50%;
  border: 1px solid var(--hairline);
  flex-shrink: 0;
  margin-top: 0.6rem;
}
@media (max-width: 700px) {
  .intro { flex-direction: column-reverse; gap: 1.6rem; }
  .intro-photo { width: 6.5rem; height: 6.5rem; margin-top: 0; }
}
.intro h1 {
  font-family: var(--serif);
  font-size: clamp(1.85rem, 4.2vw, 2.7rem);
  font-weight: 470;
  letter-spacing: -0.012em;
  line-height: 1.22;
  max-width: 21em;
  margin: 0 0 1.3rem;
}
.intro .role {
  font-size: 1.05rem;
  color: var(--muted);
  line-height: 1.65;
  max-width: 40em;
  margin: 0 0 1.8rem;
}
.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.35rem;
  font-size: 0.92rem;
}

/* ---------- Sections ---------- */

.section {
  border-top: 1px solid var(--hairline);
  padding: 3.2rem 0 3.6rem;
}
@media (min-width: 900px) {
  .section-grid {
    display: grid;
    grid-template-columns: 11rem minmax(0, 1fr);
    gap: 2.5rem;
  }
}
.section-label {
  font-size: 0.86rem;
  color: var(--faint);
  margin: 0.35rem 0 1.4rem;
}
@media (min-width: 900px) {
  .section-label { margin-bottom: 0; }
}
.section h2 {
  font-family: var(--serif);
  font-size: 1.75rem;
  font-weight: 520;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin: 0 0 0.4rem;
}
.section p { max-width: 62ch; }
.section .subhead {
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 520;
  letter-spacing: -0.005em;
  margin: 2.4rem 0 0.6rem;
}

/* Serif pull line used for the recurring statements of the site */
.statement {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.22rem;
  color: var(--ink);
  max-width: 32em;
  line-height: 1.55;
  margin: 1.6rem 0;
  padding: 0.1rem 0 0.15rem 1.1rem; /* descender reserve + rule offset */
  border-left: 2px solid var(--accent);
}

/* ---------- Featured: ParliamentRAG ---------- */

.feature-dek {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.3rem;
  font-weight: 420;
  line-height: 1.45;
  color: var(--ink);
  max-width: 34em;
  margin: 0 0 1.3rem;
  padding-bottom: 0.15rem; /* italic descender reserve */
}
.feature-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.35rem;
  font-size: 0.92rem;
  margin: 1.6rem 0 0.4rem;
}
.stat-line {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--muted);
  margin: 1.6rem 0 0;
  line-height: 1.9;
}
.contribs {
  margin: 1.4rem 0;
  padding: 0;
  list-style: none;
  max-width: 66ch;
}
.contribs li {
  padding: 0.55rem 0 0.55rem 1.1rem;
  border-left: 2px solid var(--hairline);
  margin: 0.55rem 0;
}
.contribs strong { font-weight: 560; }
.feature-figure {
  margin: 2rem 0 0;
  border: 1px solid var(--hairline);
  background: var(--figure-bg);
  padding: 1.1rem 1.1rem 0.7rem;
}
.feature-figure img { width: 100%; height: auto; display: block; }
.feature-figure figcaption {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 0.6rem;
}
.meta-note {
  font-size: 0.86rem;
  color: var(--muted);
  max-width: 62ch;
  margin-top: 1.4rem;
}

/* ---------- Publications ---------- */

.pub {
  max-width: 66ch;
}
.pub + .pub {
  margin-top: 2.1rem;
  padding-top: 2.1rem;
  border-top: 1px solid var(--hairline);
}
.pub .pub-year {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--faint);
}
.pub h3 {
  font-family: var(--serif);
  font-size: 1.32rem;
  font-weight: 520;
  line-height: 1.3;
  margin: 0.3rem 0 0.45rem;
}
.pub .pub-why {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.05rem;
  line-height: 1.55;
  color: var(--ink);
  margin: 0 0 0.6rem;
  padding-bottom: 0.1rem; /* italic descender reserve */
}
.pub .pub-authors { margin: 0 0 0.15rem; font-size: 0.95rem; }
.pub .pub-venue { margin: 0; font-size: 0.92rem; color: var(--muted); }
.pub .pub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1.2rem;
  font-size: 0.9rem;
  margin-top: 0.7rem;
}

/* ---------- Origins timeline ---------- */

.timeline {
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
  max-width: 66ch;
}
.timeline li {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr);
  gap: 1.2rem;
  padding: 1.05rem 0;
}
.timeline li + li { border-top: 1px solid var(--hairline); }
.timeline-year {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--faint);
  padding-top: 0.2rem;
}
.project-name { font-weight: 560; }
.timeline p {
  margin: 0.2rem 0 0;
  font-size: 0.95rem;
  color: var(--muted);
}
@media (max-width: 480px) {
  .timeline li { grid-template-columns: 1fr; gap: 0.15rem; }
}

/* ---------- Research questions ---------- */

.rq { max-width: 66ch; }
.rq + .rq { margin-top: 1.6rem; }
.rq h3 {
  font-family: var(--serif);
  font-size: 1.22rem;
  font-weight: 520;
  line-height: 1.35;
  margin: 0 0 0.35rem;
}
.rq p {
  margin: 0;
  color: var(--muted);
}
.fields-line {
  font-size: 0.9rem;
  color: var(--muted);
  margin-top: 2.2rem;
}
.now-line {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--ink);
  max-width: 40em;
  line-height: 1.7;
  margin: 1rem 0 0;
  padding-bottom: 0.15rem; /* italic descender reserve */
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--hairline);
  padding: 2.2rem 0 3rem;
  font-size: 0.88rem;
  color: var(--muted);
}
.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.8rem 2rem;
}
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--ink); }
.footer-links { display: flex; flex-wrap: wrap; gap: 0.4rem 1.2rem; }

/* ---------- Notes page ---------- */

.page {
  padding: 4rem 0 6rem;
  min-height: 50vh;
}
.page h1 {
  font-family: var(--serif);
  font-size: 2.2rem;
  font-weight: 500;
  margin: 0 0 1rem;
}