/* Thomas Ntinelis · personal website
   Colours are the variables below. */

:root {
  --paper: #fbfaf6;
  --ink: #1f2320;
  --soft: #5f6661;
  --rule: #e2e0d8;
  --green: #2c5e43;
  --green-dark: #1d4430;
  --mark: #e9efe6;
  --serif: "Newsreader", "Iowan Old Style", Georgia, serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #151816;
    --ink: #e6e4dd;
    --soft: #a3a89f;
    --rule: #2e332f;
    --green: #8fc4a2;
    --green-dark: #b2dbbf;
    --mark: #1f2923;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.6;
  font-optical-sizing: auto;
}
img { max-width: 100%; display: block; }
a { color: var(--green); text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--green) 35%, transparent); text-underline-offset: 3px; }
a:hover { color: var(--green-dark); text-decoration-color: currentColor; }
::selection { background: var(--mark); }

/* ---------- layout: sidebar + text ---------- */
.page {
  max-width: 1060px;
  margin: 0 auto;
  padding: 0 16px;
  display: grid;
  gap: 0 64px;
}
@media (min-width: 900px) {
  .page { grid-template-columns: 250px minmax(0, 1fr); padding: 0 40px; }
  .side { position: sticky; top: 0; align-self: start; padding-top: 64px; }
}

.side { padding-top: 36px; }
.portrait {
  width: 190px; aspect-ratio: 4 / 5; object-fit: cover;
  border-radius: 2px; margin-bottom: 20px;
  background: var(--mark);
}
.portrait-empty {
  width: 190px; aspect-ratio: 4 / 5; margin-bottom: 20px;
  background: var(--mark); border-radius: 2px;
  display: grid; place-items: center; color: var(--soft); font-style: italic; font-size: 15px;
}
.side .name {
  font-size: 30px; line-height: 1.1; font-weight: 500; letter-spacing: -.01em;
  margin: 0 0 8px; color: var(--ink); text-decoration: none; display: block;
}
.side .role .nw { white-space: nowrap; }
.side .role { font-size: 16px; color: var(--soft); line-height: 1.45; margin: 0 0 18px; }
.side .links { list-style: none; margin: 0; padding: 0; font-size: 16px; line-height: 1.9; }
.side .links a { text-decoration: none; }
.side .links a:hover { text-decoration: underline; }

@media (max-width: 899px) {
  .side { display: grid; grid-template-columns: 104px 1fr; gap: 0 18px; align-items: start; border-bottom: 1px solid var(--rule); padding-bottom: 22px; }
  .portrait, .portrait-empty { width: 104px; margin: 0; grid-row: span 3; }
  .side .name { font-size: 26px; }
  .side .role { margin-bottom: 8px; font-size: 15px; }
  .side .links { display: flex; flex-wrap: wrap; gap: 0 14px; font-size: 15px; line-height: 1.7; }
}

/* ---------- main column ---------- */
main { padding: 56px 0 40px; max-width: 690px; min-width: 0; }
@media (max-width: 899px) { main { padding-top: 22px; } }

nav.top { display: flex; flex-wrap: wrap; gap: 4px 24px; font-size: 17px; margin-bottom: 44px; }
nav.top a { color: var(--soft); text-decoration: none; padding-bottom: 3px; border-bottom: 1px solid transparent; }
nav.top a:hover { color: var(--ink); }
nav.top a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--green); }

h1 { font-size: 34px; font-weight: 500; line-height: 1.2; letter-spacing: -.01em; margin: 0 0 22px; }
h2 {
  font-size: 21px; font-weight: 600; letter-spacing: 0;
  color: var(--green); margin: 52px 0 18px;
}
h3 { font-size: 20px; font-weight: 600; line-height: 1.35; margin: 0; }
p { margin: 0 0 16px; }
.intro p:first-child { font-size: 22px; line-height: 1.5; }
.small, .meta { font-size: 16px; color: var(--soft); }
em { font-style: italic; }

/* entries (research, projects) */
.entry { padding: 0 0 26px; margin: 0 0 26px; border-bottom: 1px solid var(--rule); }
.entry:last-child { border-bottom: 0; margin-bottom: 0; }
.entry .meta { margin: 4px 0 10px; }
.entry p { margin-bottom: 10px; }

details { margin-top: 6px; }
details summary { cursor: pointer; color: var(--green); font-size: 16px; list-style: none; display: inline; }
details summary::-webkit-details-marker { display: none; }
details summary::before { content: "+ "; }
details[open] summary::before { content: "\2212  "; }
details > div { margin-top: 10px; padding-left: 16px; border-left: 2px solid var(--rule); }

/* simple dated list (news, CV) */
.dated { list-style: none; margin: 0; padding: 0; }
.dated li { display: grid; grid-template-columns: 150px 1fr; gap: 0 20px; padding: 7px 0; }
.dated .d { color: var(--soft); font-size: 16px; padding-top: 2px; font-variant-numeric: tabular-nums; }
.dated .what span { display: block; color: var(--soft); font-size: 16px; }
@media (max-width: 560px) {
  .dated li { grid-template-columns: 1fr; padding: 8px 0; }
  .dated .d { padding: 0; }
}

/* "explained" levels */
.levels details { border-top: 1px solid var(--rule); padding: 12px 0; margin: 0; }
.levels details:last-child { border-bottom: 1px solid var(--rule); }
.levels summary { font-size: 18px; color: var(--ink); }
.levels summary::before { color: var(--green); }
.levels details > div { border: 0; padding: 0; margin-top: 8px; }

.inline-list { padding: 0; margin: 0; list-style: none; }
.inline-list li { display: inline; }
.inline-list li:not(:last-child)::after { content: " · "; color: var(--soft); }

footer { margin-top: 64px; padding-top: 18px; border-top: 1px solid var(--rule); font-size: 15px; color: var(--soft); }

ul.plain { margin: 0 0 12px; padding-left: 20px; }
ul.plain li { margin: 2px 0; }
ul.plain li::marker { color: var(--green); }