/* Noor Nakhaei — personal site
   Palette: film-blue paper, reading-room ink, PACS-overlay amber.
   Type: Source Serif 4 (display + text via optical sizes), IBM Plex Mono (labels, metadata). */

:root {
  --bg: #F5F7FA;
  --ink: #141922;
  --muted: #566070;
  --faint: #626B7A;
  --rule: #D9DFE7;
  --accent: #8A5A00;
  --accent-line: #B87D00;
  --mask: rgba(20, 25, 34, 0.09);
  --mask-edge: #8F98A6;
  --grid: rgba(20, 25, 34, 0.06);

  --serif: "Source Serif 4", "Source Serif Pro", Charter, "Bitstream Charter", "Iowan Old Style", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --gutter: 10rem;
  --measure: 38rem;
  --col-gap: clamp(1.5rem, 4vw, 3rem);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0E1116;
    --ink: #E6E9EF;
    --muted: #A2ABB9;
    --faint: #8A93A2;
    --rule: #252B35;
    --accent: #F0B43C;
    --accent-line: #F0B43C;
    --mask: rgba(230, 233, 239, 0.10);
    --mask-edge: #5F6979;
    --grid: rgba(230, 233, 239, 0.06);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0E1116;
  --ink: #E6E9EF;
  --muted: #A2ABB9;
  --faint: #8A93A2;
  --rule: #252B35;
  --accent: #F0B43C;
  --accent-line: #F0B43C;
  --mask: rgba(230, 233, 239, 0.10);
  --mask-edge: #5F6979;
  --grid: rgba(230, 233, 239, 0.06);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.125rem;
  line-height: 1.6;
  font-optical-sizing: auto;
  padding-inline: 20px;
  padding-block: clamp(2.5rem, 7vw, 5.5rem) 2.5rem;
}

.page {
  max-width: calc(var(--gutter) + var(--col-gap) + var(--measure) + 2rem);
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: clamp(2.75rem, 6vw, 4rem);
}

.sections {
  display: flex;
  flex-direction: column;
  gap: clamp(2.75rem, 6vw, 4rem);
}

/* ---------- links & focus ---------- */
a {
  color: inherit;
  text-decoration-line: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

.skip {
  position: absolute;
  left: 20px;
  top: -3rem;
  padding: 0.4rem 0.7rem;
  background: var(--ink);
  color: var(--bg);
  font: 500 0.8rem/1 var(--mono);
  text-decoration: none;
}
.skip:focus { top: 1rem; }

/* ---------- masthead ---------- */
.masthead {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 1.5rem 2rem;
}

.masthead h1 {
  margin: 0;
  font-size: clamp(2.5rem, 1.5rem + 3.4vw, 3.9rem);
  font-weight: 560;
  line-height: 1.02;
  letter-spacing: -0.018em;
  text-wrap: balance;
}

.role {
  margin: 0.9rem 0 0;
  max-width: 34rem;
  font-size: 1.25rem;
  line-height: 1.45;
  color: var(--ink);
  text-wrap: balance;
}

.affil {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 1rem;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.25rem;
  margin-top: 1.25rem;
  font: 500 0.8rem/1.6 var(--mono);
  letter-spacing: 0.02em;
}

.contour { margin: 0; }
.contour canvas { display: block; width: 132px; height: 132px; }
.contour figcaption {
  margin-top: 0.5rem;
  font: 0.68rem/1.4 var(--mono);
  letter-spacing: 0.04em;
  color: var(--faint);
}

/* ---------- sections: label gutter + reading column ---------- */
.section {
  display: grid;
  grid-template-columns: var(--gutter) minmax(0, var(--measure));
  column-gap: var(--col-gap);
  align-items: start;
}

.label {
  margin: 0;
  padding-top: 0.42rem;
  font: 500 0.72rem/1.5 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
}

.body > :first-child { margin-top: 0; }
.body p { margin: 0 0 0.9rem; }
.body p:last-child { margin-bottom: 0; }

/* ---------- research ---------- */
.research { display: flex; flex-direction: column; gap: 2.25rem; }
.group { display: flex; flex-direction: column; gap: 1.6rem; }
.group-name {
  margin: 0;
  font: 500 0.72rem/1.5 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.item h3 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.35;
  text-wrap: balance;
}
.meta {
  margin: 0.3rem 0 0.55rem;
  font: 0.78rem/1.55 var(--mono);
  color: var(--muted);
}
.item p:last-child { margin: 0; }

/* ---------- dated rows (publications, education) ---------- */
.rows { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 1.35rem; }
.row { display: grid; grid-template-columns: 3.2rem minmax(0, 1fr); column-gap: 1rem; }
.year {
  padding-top: 0.28rem;
  font: 0.8rem/1.5 var(--mono);
  font-variant-numeric: tabular-nums;
  color: var(--faint);
}
.year.repeat { visibility: hidden; }
.row-title { font-size: 1.03rem; line-height: 1.45; }
.row-sub { margin: 0.15rem 0 0; font-size: 0.95rem; line-height: 1.5; color: var(--muted); }
.row-sub i { color: var(--ink); }
.me { font-weight: 600; color: var(--ink); }

/* ---------- plain lists (service, awards) ---------- */
.plain { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.85rem; }
.plain li { line-height: 1.5; }
.plain .row-sub { margin-top: 0.1rem; }

/* ---------- footer ---------- */
.colophon {
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  font: 0.72rem/1.6 var(--mono);
  color: var(--faint);
}

/* ---------- small screens ---------- */
@media (max-width: 760px) {
  .section { grid-template-columns: minmax(0, 1fr); row-gap: 0.9rem; }
  .label { padding-top: 0; }
}
@media (max-width: 560px) {
  body { font-size: 1.0625rem; }
  .masthead { grid-template-columns: minmax(0, 1fr); }
  .contour canvas { width: 104px; height: 104px; }
  .role { font-size: 1.15rem; }
}

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

@media print {
  :root { --bg: #fff; --ink: #000; --muted: #333; --faint: #444; --accent: #000; }
  body { padding: 0; font-size: 11pt; }
  .skip, .contour { display: none; }
  .page { gap: 1.25rem; }
  a { text-decoration: none; }
}