/* ============================================================
   COLL 150 · Artificial Intelligence in Speculative Media
   and Literatures · W&M Fall 2026

   The course runs two registers against each other — the
   literary and the technical — so the design does too.
   Warm ivory + gold = the made thing, the story, the hand.
   Cold spark blue = the machine, the paper, the metric.
   Type carries the split: Fraunces speaks, JetBrains Mono
   specifies, Spectral does the reading.
   ============================================================ */

:root {
  --ink:        #0A0C0E;
  --ink-2:      #10141800;
  --panel:      #10151ACC;
  --panel-2:    #0E1216;
  --line:       #232A31;
  --line-soft:  #1A2026;

  --ivory:      #EFE7D6;
  --ivory-2:    #C8BEA9;
  --muted:      #8B8878;

  --gold:       #E3BE6E;   /* the literary register */
  --spark:      #79C4EE;   /* the technical register */
  --seam:       linear-gradient(180deg, var(--gold), var(--spark));

  --display: "Fraunces", Georgia, "Times New Roman", serif;
  --body:    "Spectral", Georgia, serif;
  --mono:    "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --wrap: 1140px;
  --measure: 64ch;
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 88px; }

body {
  margin: 0;
  background: var(--ink);
  background-image:
    radial-gradient(1000px 600px at 78% -10%, #131c24 0%, transparent 65%),
    radial-gradient(760px 520px at 6% 8%, #1a1710 0%, transparent 62%);
  background-repeat: no-repeat;
  color: var(--ivory);
  font-family: var(--body);
  font-size: 17.5px;
  font-weight: 400;
  line-height: 1.75;
}

a { color: var(--gold); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: #F3D89A; }

:focus-visible { outline: 2px solid var(--spark); outline-offset: 3px; border-radius: 2px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip {
  position: absolute; left: -999px; top: 8px; z-index: 100;
  background: var(--panel-2); border: 1px solid var(--line);
  padding: 10px 16px; font-family: var(--mono); font-size: 12.5px;
}
.skip:focus { left: 16px; }

/* ── masthead / nav ───────────────────────────────────────── */

.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 12, 14, .85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-soft);
}
.nav-inner {
  max-width: var(--wrap); margin: 0 auto; padding: 13px 26px;
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 28px;
}
.nav-mark {
  font-family: var(--mono); font-size: 12.5px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--ivory); text-decoration: none;
  margin-right: auto;
}
.nav-mark em { font-style: normal; color: var(--muted); }
.nav-link {
  font-family: var(--mono); font-size: 12px; letter-spacing: .1em;
  text-transform: uppercase; color: var(--muted); text-decoration: none;
  padding-bottom: 3px; border-bottom: 1px solid transparent;
}
.nav-link:hover { color: var(--ivory); }
.nav-link[aria-current="page"] { color: var(--ivory); border-bottom-color: var(--gold); }

/* ── layout ───────────────────────────────────────────────── */

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 26px; }
.band { padding: 72px 0; border-top: 1px solid var(--line-soft); }
.band-open { padding-top: 0; border-top: 0; }
.band-tight { padding: 46px 0; }

.eyebrow {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .2em;
  text-transform: uppercase; color: var(--muted); margin: 0 0 22px;
}

h1, h2, h3 {
  font-family: var(--display);
  font-variation-settings: "SOFT" 20, "WONK" 1;
  font-weight: 600; line-height: 1.06; letter-spacing: -.015em;
  margin: 0 0 20px;
}
h1 { font-size: clamp(2.6rem, 6.4vw, 4.6rem); font-weight: 700; text-wrap: balance; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); }
h3 { font-size: 1.24rem; }
h4 {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .16em;
  text-transform: uppercase; color: var(--muted); font-weight: 400; margin: 0 0 12px;
}

p { margin: 0 0 20px; }
p:last-child { margin-bottom: 0; }

.lede {
  font-family: var(--display); font-variation-settings: "SOFT" 40, "WONK" 1;
  font-size: clamp(1.24rem, 2.5vw, 1.72rem);
  line-height: 1.36; font-weight: 400; color: var(--ivory);
  max-width: 30ch; margin: 0 0 36px;
}
.prose { max-width: var(--measure); color: var(--ivory-2); }
.prose strong { color: var(--ivory); font-weight: 600; }
.prose em { color: var(--ivory); }
.note { font-family: var(--mono); font-size: 12.5px; line-height: 1.7; color: var(--muted); }

.rule-seam { height: 1px; background: var(--line); margin: 0; border: 0; }

/* ── hero ─────────────────────────────────────────────────── */

.hero { padding: 78px 0 0; }
.hero-tags {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .18em;
  text-transform: uppercase; color: var(--muted);
  display: flex; flex-wrap: wrap; gap: 10px 22px; margin: 0 0 30px;
}
.hero-tags b { color: var(--gold); font-weight: 400; }
.hero-tags i { color: var(--spark); font-style: normal; }

/* ── the doubled glossary (signature) ─────────────────────── */

.glossary { margin: 8px 0 0; }
.glossary-intro {
  max-width: 58ch; color: var(--ivory-2); font-size: 16.5px; margin-bottom: 26px;
}
.words {
  display: flex; flex-wrap: wrap; gap: 10px 12px; margin: 0 0 34px; padding: 0; list-style: none;
}
.word {
  font-family: var(--display); font-variation-settings: "SOFT" 30, "WONK" 1;
  font-size: clamp(1.5rem, 3.6vw, 2.5rem); font-weight: 400;
  background: none; border: 0; border-bottom: 1px solid var(--line);
  color: var(--muted); padding: 2px 10px 6px; cursor: pointer;
  transition: color .2s ease, border-color .2s ease;
}
.word:hover { color: var(--ivory-2); border-bottom-color: var(--ivory-2); }
.word[aria-pressed="true"] { color: var(--ivory); border-bottom-color: var(--gold); }

.registers {
  display: grid; grid-template-columns: 1fr 1px 1fr; gap: 0;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  background: var(--panel);
}
.seam-line { background: var(--seam); opacity: .55; }
.register { padding: 30px 34px; min-height: 236px; }
.register h4 { margin-bottom: 16px; }

.reg-machine h4 { color: var(--spark); }
.reg-machine .body {
  font-family: var(--mono); font-size: 13.5px; line-height: 1.8; color: var(--ivory-2);
}
.reg-machine .body b { color: var(--spark); font-weight: 500; }

.reg-story h4 { color: var(--gold); }
.reg-story .body {
  font-family: var(--display); font-variation-settings: "SOFT" 50, "WONK" 1;
  font-size: 1.14rem; line-height: 1.5; color: var(--ivory);
}
.reg-story .body b { color: var(--gold); font-weight: 600; }

.register .src {
  display: block; margin-top: 18px;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .08em;
  text-transform: uppercase; color: var(--muted); text-decoration: none;
}
.register .src:hover { color: var(--ivory-2); }

.fade-in { animation: fade .32s ease both; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* ── facts strip ──────────────────────────────────────────── */

.facts {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 26px 30px; margin: 0;
}
.facts div { border-top: 1px solid var(--line); padding-top: 14px; }
.facts dt {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .16em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 8px;
}
.facts dd { margin: 0; font-size: 15.5px; line-height: 1.5; color: var(--ivory); }
.tbd { font-family: var(--mono); font-size: 12px; color: var(--muted); }

/* ── cards, lists ─────────────────────────────────────────── */

.cols-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
.cols-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }

.card {
  border: 1px solid var(--line-soft); background: var(--panel);
  padding: 26px 28px;
}
.card p { color: var(--ivory-2); font-size: 16.5px; }
.card h3 { font-size: 1.1rem; margin-bottom: 12px; }

.outcomes { list-style: none; margin: 0; padding: 0; counter-reset: o; }
.outcomes li {
  counter-increment: o; position: relative;
  padding: 18px 0 18px 54px; border-top: 1px solid var(--line-soft);
  color: var(--ivory-2); max-width: 78ch;
}
.outcomes li:first-child { border-top: 0; }
.outcomes li::before {
  content: counter(o); position: absolute; left: 0; top: 20px;
  font-family: var(--mono); font-size: 12px; color: var(--spark);
}
.outcomes .coll {
  display: inline-block; margin-left: 8px;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .1em;
  text-transform: uppercase; color: var(--muted);
  border: 1px solid var(--line); padding: 2px 8px; white-space: nowrap;
}

.stack { list-style: none; margin: 0; padding: 0; }
.stack li {
  padding: 13px 0; border-top: 1px solid var(--line-soft);
  color: var(--ivory-2); max-width: 74ch;
}
.stack li:first-child { border-top: 0; }
.stack b { color: var(--ivory); font-weight: 600; }
.stack .by { font-family: var(--mono); font-size: 12px; color: var(--muted); display: block; margin-top: 4px; }

/* ── schedule: units ──────────────────────────────────────── */

.unit {
  position: relative; padding: 42px 0 42px 30px; margin: 0;
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: 92px;
}
.unit:first-of-type { border-top: 0; }
.unit::before {
  content: ""; position: absolute; left: 0; top: 42px; bottom: 42px; width: 2px;
  background: var(--rule, var(--gold));
}
.unit[data-reg="text"]    { --rule: var(--gold); --accent: var(--gold); }
.unit[data-reg="machine"] { --rule: var(--spark); --accent: var(--spark); }
.unit[data-reg="both"]    { --rule: var(--seam); --accent: var(--gold); }

.unit-head {
  display: grid; grid-template-columns: 210px 1fr; gap: 28px; align-items: baseline;
}
.unit-meta { font-family: var(--mono); font-size: 12px; line-height: 1.75; color: var(--muted); }
.unit-meta .n { display: block; color: var(--ivory); letter-spacing: .1em; }
.unit-meta .dates { display: block; color: var(--ivory-2); }

.tag {
  display: inline-flex; align-items: center; gap: 7px; margin-top: 10px;
  font-family: var(--mono); font-size: 10px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--muted);
}
.tag i { width: 8px; height: 8px; display: inline-block; }
.tag .t { background: var(--gold); }
.tag .m { background: var(--spark); }

.unit-body { display: grid; grid-template-columns: 210px 1fr; gap: 28px; margin-top: 20px; }
.unit-body > .spacer { grid-column: 1; }
.unit-body > .content { grid-column: 2; }

.sourcelist { list-style: none; margin: 0 0 24px; padding: 0; }
.sourcelist li {
  display: grid; grid-template-columns: 74px 1fr; gap: 16px;
  padding: 9px 0; border-top: 1px dotted var(--line); max-width: 76ch;
}
.sourcelist li:first-child { border-top: 0; padding-top: 0; }
.sourcelist .verb {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--accent, var(--gold)); padding-top: 6px;
}
.sourcelist .what { color: var(--ivory); font-size: 16px; line-height: 1.5; }
.sourcelist .what span { color: var(--muted); font-family: var(--mono); font-size: 11.5px; display: block; margin-top: 3px; }

.gloss { max-width: var(--measure); color: var(--ivory-2); }

.kq {
  margin: 26px 0 0; padding: 0 0 0 20px;
  border-left: 1px solid var(--accent, var(--gold));
  max-width: 46ch;
}
.kq h4 { margin-bottom: 8px; color: var(--accent, var(--gold)); }
.kq p {
  font-family: var(--display); font-variation-settings: "SOFT" 60, "WONK" 1;
  font-style: italic; font-size: 1.3rem; line-height: 1.34; color: var(--ivory);
  margin: 0;
}

.wf {
  margin-top: 24px; padding-top: 14px; border-top: 1px dotted var(--line);
  font-family: var(--mono); font-size: 12px; line-height: 1.7; color: var(--muted);
  max-width: 70ch;
}
.wf b { color: var(--ivory-2); font-weight: 500; }
.wf .flag { color: var(--gold); }

.interstitial {
  display: grid; grid-template-columns: 210px 1fr; gap: 28px;
  padding: 22px 0 22px 32px; border-top: 1px solid var(--line-soft);
  font-family: var(--mono); font-size: 12.5px; color: var(--muted);
}
.interstitial b { color: var(--ivory); font-weight: 500; }

.milestone {
  display: grid; grid-template-columns: 210px 1fr; gap: 28px;
  padding: 26px 0 26px 30px; border-top: 1px solid var(--line-soft);
  position: relative;
}
.milestone::before {
  content: ""; position: absolute; left: 0; top: 26px; bottom: 26px; width: 2px;
  background: var(--ivory-2);
}
.milestone .when { font-family: var(--mono); font-size: 12px; color: var(--ivory); line-height: 1.75; }
.milestone h3 { margin-bottom: 10px; }
.milestone p { color: var(--ivory-2); max-width: var(--measure); }

/* ── grading table ────────────────────────────────────────── */

.grades { width: 100%; border-collapse: collapse; }
.grades th, .grades td {
  text-align: left; padding: 16px 14px 16px 0; border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}
.grades th {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .16em;
  text-transform: uppercase; color: var(--muted); font-weight: 400;
}
.grades .what { color: var(--ivory); }
.grades .what span { display: block; font-family: var(--mono); font-size: 11.5px; color: var(--muted); margin-top: 5px; }
.grades .w { font-family: var(--mono); font-size: 15px; color: var(--gold); width: 74px; }
.grades .due { font-family: var(--mono); font-size: 12px; color: var(--ivory-2); width: 210px; }

.scale {
  font-family: var(--mono); font-size: 12.5px; line-height: 2; color: var(--ivory-2);
  border: 1px solid var(--line-soft); padding: 22px 24px; background: var(--panel);
}
.scale b { color: var(--ivory); font-weight: 500; }

/* ── tiers ────────────────────────────────────────────────── */

.tier {
  border: 1px solid var(--line-soft); background: var(--panel);
  padding: 28px 30px; position: relative;
}
.tier::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2px;
  background: var(--rule, var(--muted));
}
.tier[data-t="0"] { --rule: var(--gold); }
.tier[data-t="1"] { --rule: var(--ivory-2); }
.tier[data-t="2"] { --rule: var(--spark); }
.tier .t-num {
  font-family: var(--mono); font-size: 11px; letter-spacing: .16em;
  text-transform: uppercase; color: var(--muted); display: block; margin-bottom: 12px;
}
.tier h3 { font-size: 1.16rem; }
.tier p, .tier li { color: var(--ivory-2); font-size: 16.5px; }
.tier ul { margin: 0; padding-left: 18px; }
.tier li { margin-bottom: 8px; }

.pull {
  font-family: var(--display); font-variation-settings: "SOFT" 60, "WONK" 1;
  font-size: clamp(1.3rem, 2.8vw, 1.85rem); line-height: 1.34;
  color: var(--ivory); max-width: 42ch; margin: 0;
}
.pull-wrap {
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 40px 0; margin: 44px 0;
}

.advisory {
  border: 1px solid #3a2f22; background: #14100B;
  padding: 26px 28px; max-width: 78ch;
}
.advisory h3 { color: var(--gold); font-size: 1.1rem; }
.advisory p { color: var(--ivory-2); font-size: 16.5px; }

.contact { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
.contact dl { margin: 0; }
.contact dt {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .16em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 6px;
}
.contact dd { margin: 0 0 20px; color: var(--ivory); font-size: 16px; }

.btn-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.btn {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .14em; text-transform: uppercase;
  text-decoration: none; color: var(--ivory); border: 1px solid var(--line);
  padding: 13px 22px; transition: border-color .2s ease, color .2s ease;
}
.btn:hover { border-color: var(--gold); color: var(--gold); }
.btn-spark:hover { border-color: var(--spark); color: var(--spark); }

/* ── footer ───────────────────────────────────────────────── */

.foot {
  border-top: 1px solid var(--line-soft); margin-top: 60px;
  padding: 38px 0 64px;
  font-family: var(--mono); font-size: 12px; line-height: 1.9; color: var(--muted);
}
.foot-inner { display: flex; flex-wrap: wrap; gap: 12px 40px; justify-content: space-between; }
.foot a { color: var(--ivory-2); }

/* ── responsive ───────────────────────────────────────────── */

@media (max-width: 900px) {
  .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cols-3, .cols-2, .contact { grid-template-columns: 1fr; }
  .unit-head, .unit-body, .interstitial, .milestone { grid-template-columns: 1fr; gap: 14px; }
  .unit-body > .spacer { display: none; }
  .unit-body > .content { grid-column: 1; }
  .registers { grid-template-columns: 1fr; }
  .seam-line { height: 1px; width: 100%; }
  .register { min-height: 0; }
}

@media (max-width: 620px) {
  body { font-size: 16.5px; }
  .wrap { padding: 0 18px; }
  .hero { padding-top: 46px; }
  .band { padding: 52px 0; }
  .register { padding: 24px 22px; }
  .grades .due { display: none; }
  .grades th:nth-child(3) { display: none; }
  .sourcelist li { grid-template-columns: 1fr; gap: 4px; }
  .sourcelist .verb { padding-top: 0; }
  .nav-mark { flex-basis: 100%; margin-right: 0; }
  .nav-inner { gap: 8px 18px; padding: 12px 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .fade-in { animation: none; }
  * { transition-duration: .01ms !important; }
}

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