/* nader.mit.edu — design tokens lifted from the Claude Design source.
   Edit here, never inline. */

:root {
  color-scheme: light;

  /* Light palette — the design's own values, and the default. */
  --bg:          #FAF9F5;
  --ink:         #17181A;
  --body:        #33342F;
  --muted:       #6B6A66;
  --accent:      #8C2B22;
  --accent-soft: rgba(140, 43, 34, 0.28);
  --rule:        #E2DFD6;
  --rule-strong: #17181A;
  --sel:         #EDE6D8;

  /* Dark palette. Declared once here; the two blocks below only reassign
     roles, so a colour change is still a one-line edit. */
  --d-bg:          #17181A;
  --d-ink:         #EDEAE2;
  --d-body:        #C5C2B9;
  --d-muted:       #8E8B84;
  --d-accent:      #E0857A;
  --d-accent-soft: rgba(224, 133, 122, 0.32);
  --d-rule:        #2E3034;
  --d-rule-strong: #55575C;
  --d-sel:         #2A2B2E;

  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --mono:  "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* Three states. No [data-theme] means "follow the system", which is the
   default until the reader touches the toggle; then the attribute wins in
   whichever direction they chose. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: var(--d-bg);
    --ink: var(--d-ink);
    --body: var(--d-body);
    --muted: var(--d-muted);
    --accent: var(--d-accent);
    --accent-soft: var(--d-accent-soft);
    --rule: var(--d-rule);
    --rule-strong: var(--d-rule-strong);
    --sel: var(--d-sel);
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: var(--d-bg);
  --ink: var(--d-ink);
  --body: var(--d-body);
  --muted: var(--d-muted);
  --accent: var(--d-accent);
  --accent-soft: var(--d-accent-soft);
  --rule: var(--d-rule);
  --rule-strong: var(--d-rule-strong);
  --sel: var(--d-sel);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
::selection { background: var(--sel); }
img { max-width: 100%; }

a { color: var(--accent); text-decoration: none; border-bottom: 1px solid var(--accent-soft); }
a:hover { color: var(--ink); border-bottom-color: var(--ink); }
a.plain, a.plain:hover { border-bottom: 0; }

/* ---------- shared type helpers ---------- */
.mono { font-family: var(--mono); letter-spacing: 0.02em; }
.eyebrow {
  margin: 0 0 4px;
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.rule-strong { border-top: 1px solid var(--rule-strong); }
.measure { max-width: 720px; }
.lede { font-size: 25px; line-height: 1.45; letter-spacing: -0.011em; }
p { text-wrap: pretty; }

/* ---------- home layout ---------- */
.home {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 40px 120px;
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 88px;
  align-items: start;
}
.sidebar {
  position: sticky;
  top: 0;
  padding: 64px 0 40px;
  display: flex;
  flex-direction: column;
  gap: 30px;
}
.portrait {
  /* Matches the aspect of static/img/nader.jpg (991x1333) so object-fit never
     re-crops it. Swap the photo for a differently shaped one and this height
     is what you change. */
  width: 152px; height: 204px;
  object-fit: cover; object-position: 50% 50%;
  border-radius: 3px; display: block;
  filter: saturate(0.92);
  background: var(--rule);
}
.sidebar h1 {
  margin: 0;
  font-size: 30px; font-weight: 400;
  letter-spacing: -0.02em; line-height: 1.1;
}
.affil {
  margin: 8px 0 0;
  font-family: var(--mono);
  font-size: 11.5px; line-height: 1.7;
  letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--muted);
}
.identity { display: flex; flex-direction: column; gap: 18px; }
.sidebar .block {
  border-top: 1px solid var(--rule); padding-top: 22px;
  display: flex; flex-direction: column; gap: 8px; align-items: flex-start;
}
.sidebar .block a { font-family: var(--mono); font-size: 12px; letter-spacing: 0.02em; }
.sidebar nav {
  border-top: 1px solid var(--rule); padding-top: 22px;
  display: flex; flex-direction: column; gap: 9px;
}
.sidebar nav a { border: 0; color: var(--ink); font-size: 16.5px; font-family: var(--serif); letter-spacing: 0; }
.sidebar nav a:hover { color: var(--accent); }

main { padding: 64px 0 0; min-width: 0; }
section + section { margin-top: 84px; }

/* ---------- content blocks ---------- */
.stack { display: flex; flex-direction: column; }
.research { padding-top: 34px; gap: 40px; }
.research article { max-width: 720px; }
.research h3 { margin: 0 0 10px; font-size: 24px; font-weight: 400; letter-spacing: -0.015em; }
.research p, .prose-block { margin: 0; font-size: 17.5px; line-height: 1.62; color: var(--body); }
.prose-block + .prose-block { margin-top: 16px; }

.rows { padding-top: 30px; display: grid; gap: 26px; max-width: 720px; }
.row { display: grid; grid-template-columns: 150px 1fr; gap: 24px; align-items: start; }
.row + .row { border-top: 1px solid var(--rule); padding-top: 26px; }
.row-key {
  font-family: var(--mono); font-size: 11.5px;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--muted); padding-top: 6px;
}
.row h3 { margin: 0 0 8px; font-size: 21px; font-weight: 400; letter-spacing: -0.012em; }
.row p { margin: 0; font-size: 17px; line-height: 1.6; color: var(--body); }

.pubs { padding-top: 26px; gap: 22px; max-width: 720px; }
.pub { display: grid; grid-template-columns: 62px 1fr; gap: 20px; }
.pub + .pub { border-top: 1px solid var(--rule); padding-top: 22px; }
.pub-year { font-family: var(--mono); font-size: 13px; color: var(--muted); padding-top: 4px; }
.pub-title { font-size: 18px; line-height: 1.5; }
/* Titles link to the DOI. Kept in ink rather than accent — a list of four
   brick-red multi-line titles would shout. Accent arrives on hover. */
.pub-title a { color: var(--ink); border-bottom-color: var(--rule); }
.pub-title a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.pub-venue { font-style: italic; font-size: 18px; color: var(--body); }
.tag { font-family: var(--mono); font-size: 12px; color: var(--muted); letter-spacing: 0.03em; text-transform: uppercase; }
.note-line { margin: 8px 0 0; font-family: var(--mono); font-size: 12.5px; color: var(--muted); letter-spacing: 0.02em; }

.awards {
  border-top: 1px solid var(--rule-strong); padding: 26px 0 0; margin: 0;
  list-style: none; display: flex; flex-direction: column; gap: 14px; max-width: 720px;
}
.awards li { display: grid; grid-template-columns: 92px 1fr; gap: 20px; font-size: 17px; line-height: 1.5; }
.awards li > span:first-child { font-family: var(--mono); font-size: 12.5px; color: var(--muted); padding-top: 4px; }

.contact-grid {
  padding-top: 26px; max-width: 720px;
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px 40px; font-size: 17px; line-height: 1.6;
}
.contact-key {
  font-family: var(--mono); font-size: 11.5px;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 6px;
}
.contact-val { color: var(--body); }
.stackcol { display: flex; flex-direction: column; align-items: flex-start; gap: 4px; }

.site-footer {
  margin-top: 96px;
  border-top: 1px solid var(--rule);
  padding-top: 20px;
  display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.04em;
  color: var(--muted);
}
.site-footer a { color: var(--muted); border-bottom-color: var(--rule); }

/* ---------- inner pages (writing index, posts) ---------- */
.page { max-width: 780px; margin: 0 auto; padding: 0 40px 120px; }
.topbar {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 24px; flex-wrap: wrap;
  padding: 40px 0 18px;
  border-bottom: 1px solid var(--rule);
}
.topbar-name { font-size: 20px; letter-spacing: -0.015em; color: var(--ink); border: 0; }
.topbar-name:hover { color: var(--accent); }
.topbar nav { display: flex; gap: 20px; flex-wrap: wrap; }
.topbar nav a {
  font-family: var(--mono); font-size: 11.5px;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted); border: 0;
}
.topbar nav a:hover { color: var(--ink); }
.topbar nav a[aria-current] { color: var(--ink); }

.page-head { padding: 56px 0 0; }
.page-head h1 { margin: 6px 0 0; font-size: 34px; font-weight: 400; letter-spacing: -0.02em; line-height: 1.18; }
.page-head .dek { margin: 14px 0 0; font-size: 19px; color: var(--body); }
.page-head .byline { margin: 18px 0 0; font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }

/* ---------- writing feed ---------- */
.feed { margin-top: 44px; border-top: 1px solid var(--rule-strong); }
.entry { padding: 30px 0; border-bottom: 1px solid var(--rule); }
.entry-meta {
  display: flex; gap: 14px; align-items: baseline; flex-wrap: wrap;
  font-family: var(--mono); font-size: 11.5px;
  letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted);
}
.entry-kind { color: var(--accent); }
/* Only ever visible in a `--drafts` preview build. */
.entry-draft {
  background: var(--accent); color: var(--bg);
  padding: 3px 8px 4px; border-radius: 999px;
  font-size: 10px; letter-spacing: 0.1em;
}
.entry h2 { margin: 8px 0 0; font-size: 25px; font-weight: 400; letter-spacing: -0.017em; line-height: 1.25; }
.entry h2 a { color: var(--ink); border: 0; }
.entry h2 a:hover { color: var(--accent); }
.entry-dek { margin: 8px 0 0; font-size: 17.5px; line-height: 1.6; color: var(--body); }
.entry-more { margin: 12px 0 0; font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.08em; text-transform: uppercase; }
.entry-more a { border: 0; }
.entry-body { margin-top: 10px; font-size: 18px; }
.entry-body > :first-child { margin-top: 0; }
.entry-body > :last-child { margin-bottom: 0; }
.year-head {
  margin: 0; padding: 34px 0 0;
  font-family: var(--mono); font-size: 11.5px;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted);
}
.empty { margin-top: 44px; color: var(--muted); font-size: 17.5px; }

/* home: recent writing preview */
.recent { padding-top: 26px; display: flex; flex-direction: column; gap: 18px; max-width: 720px; }
.recent-item { display: grid; grid-template-columns: 92px 1fr; gap: 20px; align-items: baseline; }
.recent-item + .recent-item { border-top: 1px solid var(--rule); padding-top: 18px; }
.recent-date { font-family: var(--mono); font-size: 12.5px; color: var(--muted); }
.recent-item a { color: var(--ink); border: 0; font-size: 18px; line-height: 1.45; }
.recent-item a:hover { color: var(--accent); }
.recent-kind { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin-left: 10px; white-space: nowrap; }
.recent-all { margin: 22px 0 0; font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.08em; text-transform: uppercase; }

/* ---------- prose (rendered markdown) ---------- */
.prose { margin-top: 40px; font-size: 19px; line-height: 1.7; color: var(--body); }
.prose > :first-child { margin-top: 0; }
.prose h2 { margin: 44px 0 0; font-size: 24px; font-weight: 400; letter-spacing: -0.015em; color: var(--ink); }
.prose h3 { margin: 34px 0 0; font-size: 20px; font-weight: 500; color: var(--ink); }
.prose p, .prose ul, .prose ol { margin: 16px 0 0; }
.prose li { margin: 6px 0; }
.prose li::marker { color: var(--muted); }
.prose blockquote {
  margin: 26px 0 0; padding: 2px 0 2px 22px;
  border-left: 2px solid var(--rule);
  color: var(--muted); font-style: italic;
}
.prose img { display: block; margin: 30px 0 0; border-radius: 3px; }
.prose figure { margin: 30px 0 0; }
.prose figcaption { margin-top: 8px; font-family: var(--mono); font-size: 11.5px; line-height: 1.6; color: var(--muted); }
.prose hr { margin: 40px 0 0; border: 0; border-top: 1px solid var(--rule); }
.prose code {
  font-family: var(--mono); font-size: 0.82em;
  background: var(--sel); color: var(--ink);
  padding: 1px 5px; border-radius: 3px;
}
.prose pre {
  margin: 26px 0 0; padding: 18px 20px;
  background: var(--sel); border-radius: 4px;
  overflow-x: auto; font-size: 14px; line-height: 1.6;
}
.prose pre code { background: none; padding: 0; font-size: inherit; }
.prose table {
  margin: 26px 0 0; border-collapse: collapse; width: 100%;
  font-size: 16px; display: block; overflow-x: auto;
}
.prose th, .prose td { text-align: left; padding: 8px 14px 8px 0; border-bottom: 1px solid var(--rule); }
.prose th { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); font-weight: 500; }
.prose sup a, .footnote a { border: 0; }
.prose .footnote { margin-top: 44px; padding-top: 18px; border-top: 1px solid var(--rule); font-size: 15.5px; color: var(--muted); }
.prose .footnote hr { display: none; }
.prose .footnote ol { padding-left: 18px; }

.post-nav {
  margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--rule);
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.08em; text-transform: uppercase;
}
.post-nav a { border: 0; }
.post-nav span { color: var(--muted); }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .home { grid-template-columns: 1fr; gap: 40px; padding: 0 24px 80px; }
  .sidebar { position: static; padding: 40px 0 0; gap: 24px; }
  .portrait { width: 112px; height: 150px; }
  .sidebar nav { flex-direction: row; flex-wrap: wrap; gap: 8px 20px; }
  main { padding: 0; }
  section + section { margin-top: 60px; }
  .page { padding: 0 24px 80px; }
}
@media (max-width: 640px) {
  body { font-size: 17px; }
  .lede { font-size: 21px; }
  .page-head h1 { font-size: 28px; }
  .prose { font-size: 18px; }
  .row, .pub, .awards li, .recent-item { grid-template-columns: 1fr; gap: 6px; }
  .row + .row, .pub + .pub, .recent-item + .recent-item { padding-top: 20px; }
  .contact-grid { grid-template-columns: 1fr; }
  .entry h2 { font-size: 22px; }
  .site-footer { margin-top: 60px; }
}

/* ---------- theme toggle ---------- */
.theme-toggle {
  position: fixed; top: 14px; right: 16px; z-index: 20;
  appearance: none; -webkit-appearance: none;
  /* Inverted against the page: dark pill on the light theme, light pill on the
     dark one, so it reads as a control rather than dissolving into the paper. */
  background: var(--ink); color: var(--bg);
  border: 1px solid var(--ink); border-radius: 999px;
  padding: 5px 12px 6px; cursor: pointer;
  font-family: var(--mono); font-size: 10.5px; line-height: 1;
  letter-spacing: 0.1em; text-transform: uppercase;
  transition: background-color 120ms, border-color 120ms;
}
.theme-toggle:hover { background: var(--accent); border-color: var(--accent); }
.theme-toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
@media (max-width: 640px) { .theme-toggle { top: 10px; right: 10px; } }

/* ---------- print ---------- */
@media print {
  .theme-toggle { display: none; }
  .sidebar nav, .topbar nav, .post-nav { display: none; }
  body { background: #fff; color: #000; font-size: 11pt; }
  a { color: #000; border: 0; }
}