/* ============================================================
   Noah Haeske — Engineering Portfolio
   Design tokens + shared components
   ============================================================ */

:root {
  /* Neutrals are biased warm/plum toward the accent, which is the exact crimson
     of the matplotlib traces in the thermal figures — the data sets the palette. */
  --bg:          #faf8f7;
  --surface:     #ffffff;
  --ink:         #191317;
  --ink-2:       #443c42;
  --muted:       #736a70;
  --faint:       #a39aa0;
  --line:        #e9e2e3;
  --line-strong: #d2c8ca;
  --accent:      #b0173f;
  --accent-ink:  #8a0e31;
  --accent-wash: #fcf1f3;

  --max:   1120px;
  --gut:   clamp(1.25rem, 5vw, 3rem);

  /* Display: Spectral — a screen-cut serif with the sharp, slightly narrow forms
     of a journal article. Body: Archivo, a plain American grotesk.
     Data: IBM Plex Mono for every spec strip, figure number, and course code. */
  --display: "Spectral", Georgia, "Times New Roman", serif;
  --sans: "Archivo", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --r: 4px;

  color-scheme: light;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--ink); text-decoration-color: var(--line-strong); text-underline-offset: 3px; }
a:hover { color: var(--accent); text-decoration-color: var(--accent); }

h1, h2, h3, h4 { margin: 0; text-wrap: balance; }
h1, h2 {
  font-family: var(--display);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.018em;
}
h1 { font-size: clamp(2.5rem, 6.2vw, 4.1rem); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.25rem); }
h3 {
  font-family: var(--sans);
  font-size: 1.1rem; font-weight: 600; line-height: 1.3; letter-spacing: -0.008em;
}
p  { margin: 0 0 1.05em; }
p:last-child { margin-bottom: 0; }

/* ---------- utility ---------- */
.wrap { max-width: var(--max); margin-inline: auto; padding-inline: var(--gut); }
.narrow { max-width: 68ch; }
.lede { font-size: clamp(1.08rem, 1.9vw, 1.28rem); line-height: 1.6; color: var(--ink-2); }
.muted { color: var(--muted); }
.skip {
  position: absolute; left: -9999px; top: 0; background: var(--ink); color: #fff;
  padding: .6rem 1rem; z-index: 200;
}
.skip:focus { left: 0; }

.eyebrow {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 .9rem;
  font-weight: 500;
}
.eyebrow--neutral { color: var(--faint); }

.rule { border: 0; border-top: 1px solid var(--line); margin: 0; }

/* ---------- header / nav ---------- */
.site-head {
  position: sticky; top: 0; z-index: 100;
  background: var(--bg); /* fallback for browsers without color-mix() */
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.6) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-head__inner {
  max-width: var(--max); margin-inline: auto; padding: 0 var(--gut);
  height: 62px; display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.brand {
  font-weight: 600; letter-spacing: -0.02em; font-size: 1rem;
  text-decoration: none; white-space: nowrap;
}
.brand span { color: var(--faint); font-family: var(--mono); font-size: .74rem; letter-spacing: .1em; margin-left: .55rem; text-transform: uppercase; }

.nav { display: flex; align-items: center; gap: clamp(.9rem, 2.2vw, 1.7rem); }
.nav a {
  font-size: .875rem; text-decoration: none; color: var(--ink-2);
  padding: .3rem 0; position: relative; white-space: nowrap;
}
.nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 1.5px;
  background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .18s ease;
}
.nav a:hover::after, .nav a[aria-current="page"]::after { transform: scaleX(1); }
.nav a[aria-current="page"] { color: var(--ink); font-weight: 500; }

.nav-toggle {
  display: none; background: none; border: 1px solid var(--line-strong); border-radius: var(--r);
  padding: .4rem .7rem; font-family: var(--mono); font-size: .72rem; letter-spacing: .12em;
  text-transform: uppercase; cursor: pointer; color: var(--ink);
}

@media (max-width: 800px) {
  .nav-toggle { display: block; }
  .nav {
    position: absolute; top: 62px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--surface); border-bottom: 1px solid var(--line);
    padding: .4rem var(--gut) 1rem;
    box-shadow: 0 14px 30px -18px rgba(0,0,0,.3);
  }
  .nav[hidden] { display: none; }
  .nav a { padding: .8rem 0; border-bottom: 1px solid var(--line); font-size: 1rem; }
  .nav a:last-child { border-bottom: 0; }
  .nav a::after { display: none; }
}

/* ---------- page header block ---------- */
.page-head { padding: clamp(3rem, 8vw, 5.5rem) 0 clamp(2rem, 4vw, 3rem); }
.page-head h1 { max-width: 20ch; }
.page-head .lede { margin-top: 1.4rem; max-width: 62ch; }

/* ---------- hero (home) ---------- */
.hero { padding: clamp(3rem, 8vw, 6rem) 0 clamp(2.5rem, 5vw, 4rem); }
.hero__grid {
  display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4.5rem); align-items: start;
}
.hero h1 { max-width: 14ch; }
.hero__quote {
  font-family: var(--display);
  font-size: clamp(1.25rem, 2.5vw, 1.65rem);
  line-height: 1.38; letter-spacing: -0.008em; color: var(--ink);
  margin: 1.7rem 0 1.7rem; max-width: 28ch; font-weight: 400; font-style: italic;
  border-left: 2px solid var(--accent); padding-left: 1.2rem;
}
.hero__meta { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.8rem; }

.headshot { position: relative; }
.headshot img {
  width: 100%; aspect-ratio: 4 / 5; object-fit: cover;
  border-radius: var(--r); background: #edeae5;
}
.headshot figcaption {
  font-family: var(--mono); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--faint); margin-top: .7rem;
}
.headshot--placeholder {
  aspect-ratio: 4 / 5; border: 1px dashed var(--line-strong); border-radius: var(--r);
  display: grid; place-content: center; text-align: center; padding: 1.5rem;
  color: var(--faint); font-family: var(--mono); font-size: .74rem; line-height: 1.7;
  background: repeating-linear-gradient(45deg, #f4eeef, #f4eeef 10px, #ede6e7 10px, #ede6e7 20px);
}

@media (max-width: 820px) {
  .hero__grid { grid-template-columns: 1fr; }
  .headshot { max-width: 300px; }
}

/* ---------- pills / tags ---------- */
.pill {
  display: inline-flex; align-items: center; gap: .45rem;
  font-family: var(--mono); font-size: .72rem; letter-spacing: .06em;
  border: 1px solid var(--line-strong); border-radius: 100px;
  padding: .3rem .75rem; color: var(--ink-2); background: var(--surface);
}
.pill--accent { border-color: #e8b3c3; color: var(--accent-ink); background: var(--accent-wash); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .6rem;
  font-size: .9rem; font-weight: 500; text-decoration: none;
  padding: .72rem 1.25rem; border-radius: var(--r);
  border: 1px solid var(--ink); background: var(--ink); color: #fff;
  transition: background .15s ease, border-color .15s ease, color .15s ease;
}
.btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn--ghost:hover { background: transparent; color: var(--accent); border-color: var(--accent); }
.btn-row { display: flex; flex-wrap: wrap; gap: .75rem; }

/* ---------- section ---------- */
.section { padding: clamp(2.8rem, 6vw, 4.5rem) 0; border-top: 1px solid var(--line); }
.section--flush { border-top: 0; }
.section__head { margin-bottom: 2.2rem; }
.section__head h2 { max-width: 24ch; }

/* ---------- spec strip (motif from print portfolio) ---------- */
.spec {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  border: 1px solid var(--line); border-radius: var(--r); overflow: hidden;
  background: var(--surface);
}
.spec > div { padding: 1rem 1.15rem; border-right: 1px solid var(--line); }
.spec > div:last-child { border-right: 0; }
.spec dt {
  font-family: var(--mono); font-size: .66rem; letter-spacing: .13em; text-transform: uppercase;
  color: var(--faint); margin-bottom: .45rem;
}
.spec dd { margin: 0; font-size: .95rem; line-height: 1.4; font-weight: 500; font-variant-numeric: tabular-nums; }
@media (max-width: 620px) {
  .spec > div { border-right: 0; border-bottom: 1px solid var(--line); }
  .spec > div:last-child { border-bottom: 0; }
}

/* ---------- fact list (research metadata) ---------- */
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 1.6rem 2rem; margin: 0; }
.facts dt {
  font-family: var(--mono); font-size: .66rem; letter-spacing: .13em; text-transform: uppercase;
  color: var(--faint); margin-bottom: .35rem;
}
.facts dd { margin: 0; font-size: .96rem; line-height: 1.45; }

/* ---------- cards ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; }
.card {
  display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r);
  overflow: hidden; text-decoration: none; color: inherit;
  transition: border-color .18s ease, transform .18s ease, box-shadow .18s ease;
}
a.card:hover { border-color: var(--line-strong); transform: translateY(-2px); box-shadow: 0 18px 34px -26px rgba(0,0,0,.42); }
.card__media { aspect-ratio: 16 / 10; background: #f0eee9; overflow: hidden; }
.card__media img { width: 100%; height: 100%; object-fit: cover; }
.card__body { padding: 1.35rem 1.4rem 1.5rem; display: flex; flex-direction: column; gap: .6rem; flex: 1; }
.card__meta { font-family: var(--mono); font-size: .68rem; letter-spacing: .11em; text-transform: uppercase; color: var(--faint); }
.card__body p { color: var(--ink-2); font-size: .95rem; margin: 0; }
.card__more { margin-top: auto; padding-top: .9rem; font-size: .85rem; color: var(--accent); font-weight: 500; }
a.card:hover .card__more { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- media placeholder (swap for a real image) ---------- */
.media-placeholder {
  display: grid; place-content: center; text-align: center; padding: 1.5rem;
  color: var(--faint); font-family: var(--mono); font-size: .72rem; line-height: 1.8;
  letter-spacing: .06em;
  border: 1px dashed var(--line-strong); border-radius: var(--r);
  background: repeating-linear-gradient(45deg, #f4eeef, #f4eeef 10px, #ede6e7 10px, #ede6e7 20px);
}
.card__media .media-placeholder { width: 100%; height: 100%; border: 0; border-radius: 0; }
.fig .media-placeholder { aspect-ratio: 16 / 9; }

/* ---------- figures ---------- */
figure { margin: 0; }
.fig { margin: 2.2rem 0; }
.fig img { border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); }
.fig figcaption {
  margin-top: .8rem; font-size: .86rem; line-height: 1.55; color: var(--muted);
  max-width: 68ch;
}
.fig figcaption b { color: var(--ink-2); font-weight: 600; font-family: var(--mono); font-size: .78rem; letter-spacing: .04em; }
.fig video {
  width: 100%; display: block; background: #0d0d0f;
  border: 1px solid var(--line); border-radius: var(--r);
}
.fig-pair { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.6rem; margin: 2.2rem 0; }
.fig-pair .fig { margin: 0; }

/* article body rhythm */
.prose > h2 { margin: 2.8rem 0 1rem; }
.prose > h3 { margin: 2.2rem 0 .7rem; font-family: var(--mono); font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); font-weight: 500; }
.prose > p { max-width: 70ch; color: var(--ink-2); }
.prose > ol, .prose > ul { max-width: 70ch; color: var(--ink-2); padding-left: 1.2rem; }
.prose li { margin-bottom: .6rem; }

/* ---------- numbered steps ---------- */
.steps { list-style: none; padding: 0; margin: 1.8rem 0; counter-reset: s; display: grid; gap: 1.1rem; max-width: 72ch; }
.steps li { counter-increment: s; padding-left: 2.9rem; position: relative; color: var(--ink-2); }
.steps li::before {
  content: counter(s); position: absolute; left: 0; top: .1rem;
  width: 1.9rem; height: 1.9rem; border-radius: 50%;
  border: 1px solid var(--accent); color: var(--accent);
  display: grid; place-content: center;
  font-family: var(--mono); font-size: .78rem;
}
.steps b { color: var(--ink); font-weight: 600; }

/* ---------- timeline ---------- */
.timeline { display: grid; gap: 0; }
.tl-item {
  display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 2rem;
  padding: 1.8rem 0; border-top: 1px solid var(--line);
}
.tl-item:last-child { border-bottom: 1px solid var(--line); }
.tl-when { font-family: var(--mono); font-size: .74rem; letter-spacing: .06em; color: var(--faint); padding-top: .25rem; font-variant-numeric: tabular-nums; }
.tl-when span { display: block; color: var(--ink-2); margin-top: .3rem; text-transform: uppercase; letter-spacing: .1em; font-size: .68rem; }
.tl-body h3 { margin-bottom: .15rem; }
.tl-org { color: var(--accent); font-size: .93rem; margin-bottom: .7rem; }
.tl-body ul { margin: 0; padding-left: 1.1rem; color: var(--ink-2); font-size: .95rem; }
.tl-body li { margin-bottom: .4rem; }
@media (max-width: 720px) { .tl-item { grid-template-columns: 1fr; gap: .7rem; } }

/* ---------- course grid ---------- */
.courses { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.5rem 2.5rem; }
.course-group h3 {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--faint); font-weight: 500; padding-bottom: .7rem; border-bottom: 1px solid var(--line); margin-bottom: .9rem;
}
.course-group ul { list-style: none; margin: 0; padding: 0; }
.course-group li { display: flex; gap: .8rem; padding: .42rem 0; font-size: .94rem; align-items: baseline; }
.course-group li .ip {
  font-family: var(--mono); font-size: .62rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--accent-ink); background: var(--accent-wash); border: 1px solid #e8b3c3;
  border-radius: 100px; padding: .05rem .45rem; margin-left: .4rem; white-space: nowrap;
}
.course-legend {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--faint); margin-bottom: 1.8rem;
}
.course-group li code {
  font-family: var(--mono); font-size: .74rem; color: var(--accent); letter-spacing: .02em;
  flex: 0 0 5.4rem; white-space: nowrap; font-variant-numeric: tabular-nums;
}

/* ---------- transcript table ---------- */
.transcript { width: 100%; border-collapse: collapse; font-size: .95rem; }
.transcript caption {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--faint); text-align: left; padding-bottom: .8rem;
}
.transcript thead th {
  font-family: var(--mono); font-size: .66rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--faint); font-weight: 500; text-align: left;
  padding: 0 .6rem .6rem 0; border-bottom: 1px solid var(--line-strong);
}
.transcript tbody td {
  padding: .62rem .6rem .62rem 0; border-bottom: 1px solid var(--line); vertical-align: baseline;
}
.transcript tbody tr:last-child td { border-bottom: 0; }
.transcript .t-code {
  font-family: var(--mono); font-size: .76rem; color: var(--accent);
  white-space: nowrap; font-variant-numeric: tabular-nums; width: 6.2rem;
}
.transcript .t-cr, .transcript .t-gr {
  font-variant-numeric: tabular-nums; text-align: right; width: 3.6rem; padding-right: 0;
  color: var(--ink-2);
}
.transcript .t-gr { font-family: var(--mono); font-size: .82rem; width: 4.2rem; }
.transcript thead .t-cr, .transcript thead .t-gr { text-align: right; }
.transcript .t-title .ip {
  font-family: var(--mono); font-size: .62rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--accent-ink); background: var(--accent-wash); border: 1px solid #e8b3c3;
  border-radius: 100px; padding: .05rem .45rem; margin-left: .5rem; white-space: nowrap;
}
.transcript tfoot td {
  padding: .8rem .6rem 0 0; border-top: 1px solid var(--line-strong);
  font-family: var(--mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--faint);
}
.transcript tfoot .t-cr { color: var(--ink); font-size: .9rem; letter-spacing: 0; }
.transcript-block + .transcript-block { margin-top: clamp(2.2rem, 4vw, 3rem); }
@media (max-width: 620px) {
  .transcript { font-size: .88rem; }
  .transcript .t-code { width: 5.2rem; font-size: .7rem; }
  .transcript .t-cr { width: 2.8rem; }
  .transcript .t-gr { width: 3.2rem; }
}

/* ---------- awards (compact) ---------- */
.awards { list-style: none; margin: 0; padding: 0; }
.awards li {
  display: flex; align-items: baseline; justify-content: space-between; gap: 1.5rem;
  padding: .6rem 0; border-bottom: 1px solid var(--line);
}
.awards li:last-child { border-bottom: 0; }
.awards .aw-name { font-size: .96rem; font-weight: 500; }
.awards .aw-org {
  display: block; font-weight: 400; font-size: .84rem; color: var(--ink-2); margin-top: .12rem;
}
.awards .aw-year {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .06em; color: var(--faint);
  white-space: nowrap; font-variant-numeric: tabular-nums;
}
@media (max-width: 560px) {
  .awards li { flex-direction: column; gap: .2rem; }
  .awards .aw-year { order: -1; }
}

/* visible keyboard focus everywhere */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.6rem 2rem; }
.contact-grid dt { font-family: var(--mono); font-size: .66rem; letter-spacing: .13em; text-transform: uppercase; color: var(--faint); margin-bottom: .35rem; }
.contact-grid dd { margin: 0; font-size: 1rem; }
.contact-grid a { text-decoration: none; border-bottom: 1px solid var(--line-strong); }
.contact-grid a:hover { border-color: var(--accent); }

/* ---------- footer ---------- */
.site-foot { border-top: 1px solid var(--line); margin-top: clamp(3rem, 7vw, 5rem); padding: 2.6rem 0 3rem; }
.site-foot__inner { display: flex; flex-wrap: wrap; gap: 1.2rem 2rem; justify-content: space-between; align-items: baseline; }
.site-foot a { font-size: .9rem; }
.site-foot .fine { font-family: var(--mono); font-size: .72rem; letter-spacing: .05em; color: var(--faint); }
.foot-links { display: flex; flex-wrap: wrap; gap: 1.2rem; }

/* ---------- draft banner (delete before publishing) ---------- */
.draft-note {
  background: #fff8e1; border: 1px solid #e8d48a; border-radius: var(--r);
  padding: .9rem 1.1rem; font-size: .88rem; color: #6b5310; margin-bottom: 2rem;
}
.draft-note b { font-family: var(--mono); font-size: .74rem; letter-spacing: .1em; text-transform: uppercase; }

/* ---------- scroll reveal ---------- */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
  .reveal.is-in { opacity: 1; transform: none; }
}

/* ---------- print ---------- */
@media print {
  .site-head, .site-foot, .nav-toggle, .draft-note { display: none; }
  body { background: #fff; font-size: 11pt; }
}