/* Personal research website — Michael C. Zargham
   Plain CSS, no build step. One file governs all pages.
   Typography uses the visitor's installed serif fonts; nothing is fetched
   from third parties. */

:root {
  --paper: #fbfaf7;
  --ink: #1d1d1b;
  --ink-soft: #4a4a46;
  --ink-faint: #7a7a74;
  --rule: #d9d6cd;
  --accent: #2b4c7e;
  --accent-hover: #1b3357;
  --mark: #f1eee6;

  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino,
    "Book Antiqua", Georgia, "Times New Roman", serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --measure: 42rem;
  --gutter: 1rem;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #171716;
    --ink: #e8e5dd;
    --ink-soft: #b9b5aa;
    --ink-faint: #85817a;
    --rule: #34332f;
    --accent: #8fb0e0;
    --accent-hover: #b4cbee;
    --mark: #222120;
  }
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  line-height: 1.55;
  font-feature-settings: "kern", "liga", "onum";
}

/* ---------- Layout ---------- */

.wrap {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  padding: 0.5rem 0.75rem;
  background: var(--ink);
  color: var(--paper);
}
.skip-link:focus {
  left: var(--gutter);
  z-index: 10;
}

.site-header {
  padding: 1.5rem 0 1rem;
  border-bottom: 1px solid var(--rule);
}
.site-header .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
}
.site-name {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
}
.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
}
.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  padding: 0.125rem 0;
  border-bottom: 1px solid transparent;
}
.site-nav a:hover,
.site-nav a:focus {
  color: var(--ink);
  border-bottom-color: var(--ink);
}
.site-nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

main {
  padding: 2.5rem 0 3rem;
}

.site-footer {
  border-top: 1px solid var(--rule);
  padding: 1.25rem 0 2.5rem;
  color: var(--ink-faint);
  font-size: 0.9rem;
}
.site-footer p {
  margin: 0.25rem 0;
}

/* ---------- Type ---------- */

h1,
h2,
h3 {
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.005em;
  margin: 0 0 0.5rem;
}
h1 {
  font-size: 2rem;
}
h2 {
  font-size: 1.375rem;
  margin-top: 2.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--rule);
}
h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}
h3 {
  font-size: 1.0625rem;
  margin-top: 1.75rem;
  color: var(--ink-soft);
  font-style: italic;
  font-weight: 500;
}

p {
  margin: 0 0 1rem;
}
ul,
ol {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}
li {
  margin-bottom: 0.35rem;
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.14em;
}
a:hover,
a:focus {
  color: var(--accent-hover);
}
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.lede {
  font-size: 1.1875rem;
  line-height: 1.5;
}
.muted {
  color: var(--ink-soft);
}
.small {
  font-size: 0.9rem;
}
.kicker {
  margin: 0 0 0.375rem;
  color: var(--ink-faint);
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ---------- Home: masthead ---------- */

.masthead {
  margin-bottom: 2.25rem;
}
.masthead .role {
  margin: 0.25rem 0 0;
  color: var(--ink-soft);
  font-size: 1.0625rem;
}
.masthead .tagline {
  margin: 1.5rem 0 0;
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.005em;
  color: var(--ink);
}
.masthead .thesis {
  margin: 0.25rem 0 0;
  font-style: italic;
  font-size: 1.125rem;
  color: var(--ink-soft);
}

/* Inline contact / link row */
.linkrow {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
}
.linkrow li {
  margin: 0;
}

/* ---------- Definition-style groups (Research page, roles list) ---------- */

.facets {
  margin: 1rem 0 0;
}
.facets dt {
  margin-top: 1rem;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.facets dd {
  margin: 0.25rem 0 0;
}
.facets dd ul {
  margin-bottom: 0;
}

@media (min-width: 48em) {
  .facets {
    display: grid;
    grid-template-columns: 7.5rem 1fr;
    column-gap: 1.25rem;
    row-gap: 0.75rem;
  }
  .facets dt,
  .facets dd {
    margin-top: 0;
  }
  .facets dt {
    padding-top: 0.25rem;
  }
}

/* Roles list on the home page */
.roles {
  list-style: none;
  padding: 0;
  margin: 0;
}
.roles li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.125rem 1rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--rule);
  margin: 0;
}
.roles li:last-child {
  border-bottom: 0;
}
.roles .when {
  color: var(--ink-faint);
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
}
@media (min-width: 40em) {
  .roles li {
    grid-template-columns: 8rem 1fr;
  }
}

/* Trajectory phases */
.phases {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: phase;
}
.phases > li {
  position: relative;
  padding-left: 2.25rem;
  margin-bottom: 1.25rem;
}
.phases > li::before {
  counter-increment: phase;
  content: counter(phase, upper-roman);
  position: absolute;
  left: 0;
  top: 0.1em;
  width: 1.75rem;
  color: var(--ink-faint);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
}
.phases h3 {
  margin: 0 0 0.25rem;
  font-style: normal;
  color: var(--ink);
  font-weight: 600;
}
.phases p {
  margin-bottom: 0.375rem;
}

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

/* Labels (J1, C1, …) are CSS counters, so inserting a new entry at the top
   of a list renumbers automatically. Anchors use stable slug ids instead. */
.pubs {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: pub;
}
.pubs li {
  display: grid;
  grid-template-columns: 2.75rem 1fr;
  gap: 0 0.5rem;
  margin: 0 0 0.9rem;
}
.pubs li::before {
  counter-increment: pub;
  content: counter(pub);
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding-top: 0.3em;
}
.pubs-j li::before { content: "J" counter(pub); }
.pubs-c li::before { content: "C" counter(pub); }
.pubs-b li::before { content: "B" counter(pub); }
.pubs-w li::before { content: "W" counter(pub); }
.pubs-o li::before { content: "–"; }
.pubs .me {
  font-weight: 600;
}
.pubs .title {
  font-style: normal;
}
.pubs .venue {
  font-style: italic;
}
.pubs .note {
  color: var(--ink-soft);
  font-size: 0.95rem;
}
.pubs .status {
  color: var(--ink-soft);
}
.pubs li:target {
  background: var(--mark);
  outline: 0.5rem solid var(--mark);
}

/* ---------- Misc ---------- */

hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 2rem 0;
}

@media print {
  .site-nav,
  .skip-link {
    display: none;
  }
  body {
    background: #fff;
    color: #000;
  }
  a {
    color: #000;
  }
}