/* ==========================================================================
   Maximilian W. Müller — site styles

   Design notes, so future-you knows what the choices were:

   - One typeface (Source Serif 4) at three sizes. A single well-set family
     reads as more deliberate than two families used casually.
   - Page column is 860px, set in _quarto.yml under grid: body-width.
     Running text is capped separately by the line length rule (~44rem, about
     75 characters) so long paragraphs stay comfortable to read.
   - Colour appears in exactly one place: links. Everything else is ink,
     muted ink, and rule.
   - The paper white is #FCFBF8 — warm, but deliberately lighter than the
     cream that every academic template reaches for.
   ========================================================================== */

/* ------------------------------------------------------------ base ---- */

/* Colours, fonts and the navbar/footer come from theme.scss. The text
   column width is set by grid: body-width in _quarto.yml (860px). Long
   paragraphs are capped at about 75 characters by the rules below. */

:root {
  --paper:      #FCFBF8;
  --ink:        #1C1B19;
  --ink-muted:  #6B6862;
  --ink-faint:  #97948C;
  --rule:       #E2DFD7;
  --accent:     #2E5248;
  --accent-lit: #47786A;
}

body {
  font-variant-numeric: oldstyle-num proportional-nums;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main.content { padding-bottom: 4rem; }

/* --------------------------------------------------------------- navbar -- */

.navbar {
  border-bottom: 1px solid var(--rule);
  box-shadow: none;
  padding-top: 1.1rem;
  padding-bottom: 0.9rem;
}

.navbar-brand,
.navbar-title {
  font-weight: 600;
  letter-spacing: -0.006em;
  font-size: 1.0625rem;
}

.navbar .nav-link { font-size: 0.9375rem; }

.navbar .nav-link.active,
.navbar .nav-link:hover {
  text-decoration: underline;
  text-underline-offset: 0.22em;
  text-decoration-thickness: 1px;
}

.navbar-toggler { border: none; }

/* Align the navbar with the text column on wide screens, so the name sits
   directly above the left edge of the bio. */
@media (min-width: 992px) {
  .navbar > .navbar-container,
  .navbar > .container-fluid {
    max-width: calc(860px + 3rem);
    margin: 0 auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
}

/* ----------------------------------------------------------- typography -- */

h1, h2, h3 {
  font-weight: 600;
  letter-spacing: -0.008em;
  line-height: 1.25;
  color: var(--ink);
}

h1 {
  font-size: 1.5rem;
  margin: 2.5rem 0 1.25rem;
}

/* The page title Quarto injects — usually redundant with the nav, so it is
   hidden by default. Delete this rule if you want visible page titles. */
#title-block-header { display: none; }

h2 {
  font-size: 1.125rem;
  margin: 2.75rem 0 0.4rem;
}

h3 {
  font-size: 1rem;
  margin: 2rem 0 0.4rem;
}

p { margin: 0 0 1.05rem; }

a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.16em;
  text-decoration-thickness: 0.5px;
  text-decoration-color: rgba(46, 82, 72, 0.35);
}

a:hover {
  color: var(--accent-lit);
  text-decoration-color: currentColor;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

em { font-style: italic; }

hr {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 2.5rem 0;
}

/* --------------------------------------------------------- line length -- */

/* The page is wide, but running text is capped so lines stay readable. */
main.content > p,
main.content > ul,
main.content > ol,
main.content > dl,
main.content > blockquote,
.bio-text,
.media-list,
.paper details > p {
  max-width: 44rem;
}

/* ------------------------------------------------------------ home page -- */

.bio {
  display: grid;
  grid-template-columns: 16rem minmax(0, 1fr);
  gap: 1.75rem;
  align-items: start;
  margin: 2.25rem 0 3rem;
}

@media (max-width: 34rem) {
  .bio { grid-template-columns: 1fr; gap: 1.25rem; }
  .portrait-figure { max-width: 14rem; }
}

.bio-text p:first-child { margin-top: 0; }

.bio-links {
  font-size: 0.9375rem;
  color: var(--ink-muted);
  margin-bottom: 0;
}

.bio-links a { margin-right: 0.9rem; }

/* --------------------------------------------------- portrait  stepper -- */

.portrait-figure { margin: 0; }

.portrait-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 5;          /* fixed, so swapping never shifts layout */
  overflow: hidden;
  border-radius: 3px;
  background: #EFEDE7;
}

.portrait-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.portrait-caption {
  margin: 0.55rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.4;
  color: var(--ink-muted);
  min-height: 2.3em;             /* reserves room for two lines */
}

.portrait-caption .year {
  display: block;
  color: var(--ink-faint);
}

.portrait-ticks {
  display: flex;
  gap: 4px;
  margin-top: 0.6rem;
}

.portrait-ticks button {
  flex: 1;
  height: 4px;
  min-width: 10px;
  padding: 0;
  border: none;
  border-radius: 2px;
  background: var(--rule);
  cursor: pointer;
  transition: background 120ms ease;
}

.portrait-ticks button:hover { background: var(--ink-faint); }

.portrait-ticks button[aria-current="true"] { background: var(--ink); }

/* Larger hit area for touch without changing the visual size */
.portrait-ticks button::before {
  content: "";
  position: absolute;
  margin: -10px 0 0 -2px;
  width: calc(100% + 4px);
  height: 24px;
}
.portrait-ticks button { position: relative; }

@media (prefers-reduced-motion: reduce) {
  .portrait-ticks button { transition: none; }
}

/* ------------------------------------------------------------- research -- */

.theme {
  margin: 2.75rem 0 0;
}

.theme-blurb {
  color: var(--ink-muted);
  font-size: 0.9375rem;
  margin: 0.15rem 0 1.1rem;
}

.papers {
  border-left: 1px solid var(--rule);
  border-radius: 0;              /* single-sided borders never get radius */
  padding-left: 1.15rem;
}

.paper { margin-bottom: 1.35rem; }
.paper > p { margin: 0; }
.theme-blurb > p { margin: 0; }
.bio-links > p { margin: 0; }
.paper:last-child { margin-bottom: 0; }

.paper-title {
  display: block;
  margin-bottom: 0.15rem;
  line-height: 1.4;
}

.paper-meta {
  font-size: 0.8438rem;
  color: var(--ink-muted);
  line-height: 1.55;
}

.paper-meta a { color: var(--ink-muted); }
.paper-meta a:hover { color: var(--accent); }

.paper-meta .sep {
  color: var(--ink-faint);
  padding: 0 0.35rem;
}

/* Collapsible abstracts. <details> is native, keyboard-accessible, and
   works with no JavaScript at all. */

.paper details { margin-top: 0.35rem; }

.paper summary {
  display: inline;
  cursor: pointer;
  font-size: 0.8438rem;
  color: var(--ink-muted);
  list-style: none;
}

.paper summary::-webkit-details-marker { display: none; }
.paper summary::marker { content: ""; }

.paper summary:hover { color: var(--accent); }

.paper details[open] summary { color: var(--ink); }

.paper details > p {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--ink);
  margin: 0.6rem 0 0;
  padding-left: 0.85rem;
  border-left: 1px solid var(--rule);
  border-radius: 0;
}

/* --------------------------------------------------------- photo pages -- */

/* Two columns of uncropped photos; each photo keeps its own shape.
   Panoramas (class="pano") span both columns. One column on phones. */

.gallery {
  column-count: 2;
  column-gap: 0.75rem;
  margin: 0.75rem 0 2rem;
}

.gallery figure {
  margin: 0 0 0.75rem;
  break-inside: avoid;
}

.gallery figure.pano { column-span: all; }

.gallery img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 3px;
  background: var(--rule);
}

@media (max-width: 34rem) {
  .gallery { column-count: 1; }
}

.namesake-photo {
  max-width: min(17rem, 100%);
  margin: 1.5rem auto 1.75rem;
  text-align: center;
}
.namesake-photo img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 3px;
}
.namesake-photo figcaption {
  font-size: 0.8125rem;
  color: var(--ink-muted);
  margin-top: 0.4rem;
  font-style: italic;
}

.jump { font-size: 0.9375rem; margin-bottom: 1.5rem; }
.jump p { margin: 0; }
.jump .sep, .paper-meta .sep { color: var(--ink-faint); padding: 0 0.35rem; }

.media-list p { margin-bottom: 0.9rem; }
.media-list blockquote {
  margin: 0.25rem 0 0.9rem;
  padding-left: 0.85rem;
  border-left: 1px solid var(--rule);
  border-radius: 0;
  color: var(--ink-muted);
  font-size: 0.9375rem;
}

/* ------------------------------------------------------------- footer --- */

.nav-footer {
  border-top: 1px solid var(--rule);
  font-size: 0.8125rem;
}

/* ------------------------------------------------------------- utility -- */

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------------------------------------------------------------- print -- */

@media print {
  .navbar, .nav-footer, .portrait-ticks { display: none; }
  body { background: #fff; font-size: 11pt; }
  .paper details { display: block; }
  .paper details > p { border: none; padding-left: 0; }
  a { color: var(--ink); text-decoration: none; }
}