/* ==========================================================================
   ugurmertyasar.com
   All colour lives in :root. Change a value here and every page follows.
   ========================================================================== */

:root {
  --paper:     #ffffff;
  --paper-alt: #f5f6f7;
  --ink:       #1b1b1b;
  --muted:     #5f6368;
  --rule:      #e4e4e4;
  --accent:    #800000;   /* links, labels, masthead band */
  --on-accent: #ffffff;
  --band:      #800000;   /* masthead background */
  --footer:    #800000;
  --formal:    #800000;   /* state, law, public institutions */
  --informal:  #7a6a3a;   /* family, community, religion */

  --map-ocean:    #ffffff;
  --map-grat:     #dde3e7;
  --map-edge:     #c3ccd2;
  --map-bg:       #dcdcdc;
  --map-hi:       #800000;
  --map-hi-hover: #5a0000;

  --display: "Oswald", "Arial Narrow", sans-serif;
  --sans:    "Inter", "Helvetica Neue", Arial, sans-serif;

  --measure: 36rem;
  --wide:    72rem;
}


*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--wide); margin: 0 auto; padding: 0 1.5rem; }

.label {
  font-family: var(--display);
  font-size: .8125rem; font-weight: 400;
  letter-spacing: .02em;
  color: var(--accent);
  margin: 0;
}

h1, h2, h3 {
  font-family: var(--display); font-weight: 400;
  letter-spacing: .01em;
}

a { color: var(--accent); text-decoration-color: currentColor; text-decoration-thickness: 1px; text-underline-offset: .2em; }
a:hover { color: var(--ink); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

/* --- masthead ------------------------------------------------------------ */
.masthead { background: var(--band); color: var(--on-accent); }
.masthead .wrap {
  display: flex; flex-wrap: wrap; gap: .5rem 2rem;
  align-items: center; justify-content: space-between;
  padding-top: 1.1rem; padding-bottom: 1.1rem;
}
.masthead .name {
  font-family: var(--display); font-size: 1.25rem; font-weight: 500;
  letter-spacing: .02em;
  color: var(--on-accent); text-decoration: none;
}
.nav { display: flex; gap: 1.75rem; }
.nav a {
  font-family: var(--display); font-size: 1rem; letter-spacing: .03em;
  text-decoration: none;
  color: var(--on-accent); opacity: .75;
  padding: .2rem 0; border-bottom: 1px solid transparent;
}
.nav a:hover { opacity: 1; color: var(--on-accent); }
.nav a[aria-current="page"] { opacity: 1; border-bottom-color: currentColor; }

/* --- hero ---------------------------------------------------------------- */
.hero {
  padding: 4rem 0 4.5rem; display: grid; gap: 4rem;
  grid-template-columns: minmax(0,1fr) minmax(16rem, 24rem); align-items: center;
}
.hero h1 {
  font-size: 1.75rem; line-height: 1.2; font-weight: 500;
  text-transform: none; letter-spacing: .01em;
  margin: 0 0 .5rem;
}
.hero .role { color: var(--muted); font-size: 1rem; line-height: 1.6; margin: 0 0 1.5rem; max-width: none; }
.hero p { max-width: var(--measure); margin: 0 0 1rem; }
.hero .portrait {
  width: 100%; height: auto; aspect-ratio: 4 / 5; object-fit: cover;
  display: block; border-radius: 2px;
}

.hero .portrait.is-flip { cursor: pointer; transition: transform .3s ease; }
.hero .portrait.is-flip:hover { transform: scale(1.03); }
.hero .portrait.is-flip:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }

.links { display: flex; flex-wrap: wrap; gap: .5rem .75rem; margin: 1.75rem 0 0; padding: 0; list-style: none; }
.links a {
  font-size: .8125rem; text-decoration: none; color: var(--ink);
  border: 1px solid var(--rule); border-radius: 2px; padding: .35rem .85rem;
  display: inline-block;
}
.links a:hover { border-color: var(--accent); color: var(--accent); }

/* --- map plate ----------------------------------------------------------- */
.plate { padding: 3.5rem 0 4rem; }
.band { background: var(--paper-alt); border-top: 1px solid var(--rule); }
.plate figure { margin: 0; }
.plate-head { margin-bottom: 1.5rem; }
.plate h2 { font-size: clamp(1.5rem, 3vw, 1.875rem); line-height: 1.15; margin: 0; }
.soon-note { margin: .4rem 0 0; color: var(--muted); }

/* Survey section switch: see the comment above the section in index.html. */
.plate[data-state="hidden"] { display: none; }
.plate[data-state="soon"] .when-live,
.plate[data-state="live"] .when-soon { display: none; }
.plate figcaption { margin-top: 1.5rem; max-width: 46rem; color: var(--muted); font-size: .9375rem; }

.stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
  margin: 1.75rem 0 0; padding: 0; list-style: none;
}
.stats li { padding: 1.1rem 1.25rem; border-left: 1px solid var(--rule); }
.stats li:first-child { border-left: 0; padding-left: 0; }
.stats .n {
  display: block; font-family: var(--display); font-size: 2.25rem; line-height: 1;
  color: var(--ink);
}
.stats .label { display: block; margin-top: .45rem; color: var(--muted); font-size: .75rem; }

.map-wrap { position: relative; }
.map { width: 100%; height: auto; display: block; }

.map .ocean      { fill: var(--map-ocean); }
.map .grat path  { fill: none; stroke: var(--map-grat); stroke-width: .7; }
.map .c          { fill: var(--map-bg); stroke: var(--map-ocean); stroke-width: .6; stroke-linejoin: round; }
.map .c.s        { fill: var(--map-hi); cursor: pointer; transition: fill .12s ease; }
.map .c.dot      { stroke-width: 1.4; }
.map .edge       { fill: none; stroke: var(--map-edge); stroke-width: 1.2; }
.map .c.s.is-on  { fill: var(--map-hi-hover); }

.map-tip {
  position: absolute; pointer-events: none; opacity: 0;
  transform: translate(-50%, -145%);
  font-size: .75rem; font-weight: 500; white-space: nowrap;
  background: var(--ink); color: var(--paper);
  padding: .3rem .6rem; border-radius: 2px;
  box-shadow: 0 2px 8px rgba(0,0,0,.16);
  transition: opacity .12s ease;
}
.map-tip.on { opacity: 1; }
.map-tip .tip-l { opacity: .7; font-weight: 400; }

.map-legend {
  display: flex; flex-wrap: wrap; align-items: center; gap: .4rem 1.75rem;
  margin-top: 1rem; font-size: .75rem; color: var(--muted);
}
.map-legend .sw {
  width: .7rem; height: .7rem; border-radius: 2px;
  display: inline-block; margin-right: .45rem; vertical-align: -1px;
}
.map-legend .sw-hi { background: var(--map-hi); }
.map-legend .sw-bg { background: var(--map-bg); }
.map-legend .hint { margin-left: auto; }

/* --- sections ------------------------------------------------------------ */
.section { border-top: 1px solid var(--rule); padding: 2.5rem 0 3rem; }
.section > h2 { font-size: clamp(1.5rem, 3vw, 1.875rem); line-height: 1.15; margin: 0 0 1.5rem; }

/* Inner pages: plain title on a grey band under the masthead. */
.page-header { background: var(--paper-alt); border-bottom: 1px solid var(--rule); padding: 3rem 0 2.5rem; }
.page-header h1 { font-size: clamp(2.25rem, 5vw, 3.2rem); line-height: 1; margin: 0; }
.intro { color: var(--muted); margin: 2.25rem 0 0; }

.photo { margin: 2.5rem 0 0; }
.photo img { width: 100%; height: auto; display: block; border-radius: 2px; }
.photo figcaption { margin-top: .5rem; font-size: .75rem; color: var(--muted); }
.photo + .intro { margin-top: 1.75rem; }

/* --- teaching -------------------------------------------------------------- */
.courses { list-style: none; margin: 0; padding: 0; max-width: 48rem; }
.courses li { padding: 1rem 0; border-bottom: 1px solid var(--rule); }
.courses li:first-child { border-top: 1px solid var(--rule); }
.courses .course { font-weight: 600; margin: 0; }
.courses .meta { color: var(--muted); font-size: .9375rem; margin: .15rem 0 0; }
.courses .term { white-space: nowrap; }
@media (min-width: 46rem) {
  .courses li { display: grid; grid-template-columns: 1fr 11rem; gap: 1rem; align-items: baseline; }
  .courses .term { text-align: right; color: var(--muted); font-size: .9375rem; }
}
.intro + .section { border-top: 0; }

.titles { list-style: none; margin: 0; padding: 0; max-width: 48rem; }
.titles li { padding: .7rem 0; border-bottom: 1px solid var(--rule); }
.titles li:first-child { border-top: 1px solid var(--rule); }
.titles a { color: var(--ink); text-decoration: none; font-weight: 500; }
.titles a:hover { color: var(--accent); }
.tag {
  margin-left: .5rem; white-space: nowrap;
  font-family: var(--display); font-size: .8125rem; letter-spacing: .02em;
  color: var(--accent);
}
.prose { max-width: var(--measure); }
.prose p { margin: 0 0 1rem; }
.more { margin: 1.5rem 0 0; font-family: var(--display); letter-spacing: .02em; font-size: 1rem; }
.more a { text-decoration: none; }

/* --- papers -------------------------------------------------------------- */
.paper { padding: 1.1rem 0 1.1rem 1.25rem; border-left: 2px solid var(--rule); margin-bottom: .75rem; }
.paper h3 {
  font-family: var(--sans); text-transform: none; letter-spacing: 0;
  font-size: 1.0625rem; font-weight: 600; margin: 0 0 .3rem; line-height: 1.4;
}
.paper .authors { color: var(--muted); font-size: .9375rem; margin: 0 0 .5rem; }
.paper .status {
  display: inline-block; font-family: var(--display); font-size: .8125rem;
  letter-spacing: .02em; color: var(--muted);
  border: 1px solid var(--rule); border-radius: 2px; padding: .1rem .5rem;
}
.paper.is-jmp { border-left-color: var(--accent); }
.paper .status.is-jmp { color: var(--accent); border-color: var(--accent); }
.paper details { margin-top: .75rem; }
.paper summary { font-size: .8125rem; font-weight: 500; color: var(--accent); cursor: pointer; }
.paper details p { max-width: var(--measure); margin: .75rem 0 0; font-size: .9375rem; }

/* --- footer -------------------------------------------------------------- */
.footer { background: var(--footer); color: #fff; margin-top: 3rem; padding: 2.5rem 0 3rem; }
.band + .footer { margin-top: 0; }
.footer h2 { font-size: 1.375rem; line-height: 1.2; margin: 0 0 1rem; }
.find { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .6rem 1.75rem; }
.find a { color: #fff; text-decoration: none; display: inline-flex; align-items: center; gap: .5rem; opacity: .9; }
.find a:hover { opacity: 1; text-decoration: underline; text-underline-offset: .2em; }
.find .ico { width: 1.1rem; height: 1.1rem; flex: none; }

@media (max-width: 46rem) {
  .hero { grid-template-columns: 1fr; gap: 0; padding-top: 2.5rem; }
  .hero .portrait { order: -1; max-width: 15rem; margin: 0 0 2rem; }
  .page-header { padding: 2rem 0 1.75rem; }
  .nav { gap: 1.25rem; }
  .stats li { padding-left: .75rem; padding-right: .5rem; }
  .map-legend .hint { margin-left: 0; flex-basis: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}