/* ==========================================================================
   SCIA — SCIence in Architecture · Michigan Tech
   Palette is drawn from the lab logo: brass, chip-blue, charcoal.
   ========================================================================== */

:root {
  --brass: #a8802f;
  --brass-strong: #8a6720;
  --brass-soft: #e9dcbb;
  --chip: #2f5a8f;
  --chip-soft: #dbe6f3;

  --bg: #f7f4ee;
  --surface: #ffffff;
  --surface-2: #f0ebe1;
  --line: #e2dccd;
  --ink: #1b2230;
  --ink-2: #4a5160;
  --ink-3: #5e6573;
  --link: #2f5a8f;
  --focus: #2f5a8f;
  --btn-bg: #8a6720;
  --btn-bg-hover: #775818;
  --btn-ink: #ffffff;
  --badge-ink: #6f5216;
  --counter-bg: #1b2230;
  --counter-ink: #e9dcbb;
  --counter-line: #3a4353;

  --shadow: 0 1px 2px rgba(27, 34, 48, 0.06), 0 8px 24px rgba(27, 34, 48, 0.08);
  --radius: 10px;
  --radius-lg: 16px;

  --font-serif: "Source Serif 4", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --font-sans: "Source Sans 3", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --max: 1120px;
  --gutter: clamp(16px, 4vw, 32px);
}

@media (prefers-color-scheme: dark) {
  :root {
    --brass: #d2ab5a;
    --brass-strong: #e6c479;
    --brass-soft: #3a3120;
    --chip: #8fb4e6;
    --chip-soft: #1f2d42;

    --bg: #12161e;
    --surface: #1a2029;
    --surface-2: #222a35;
    --line: #2d3541;
    --ink: #eef0f3;
    --ink-2: #c3c8d1;
    --ink-3: #8e96a4;
    --link: #8fb4e6;
    --focus: #d2ab5a;
    --btn-bg: #d2ab5a;
    --btn-bg-hover: #e6c479;
    --btn-ink: #12161e;
    --badge-ink: #e6c479;
    --counter-bg: #0b0e13;
    --counter-ink: #e6c479;
    --counter-line: #2d3541;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--link); text-underline-offset: 0.15em; }
a:hover { color: var(--brass-strong); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3, h4 { font-family: var(--font-serif); line-height: 1.2; margin: 0 0 0.5em; font-weight: 600; letter-spacing: -0.005em; }
h1 { font-size: clamp(2rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }
.container { max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }
.skip-link {
  position: absolute; left: -999px; top: 8px; z-index: 1000;
  background: var(--brass); color: #fff; padding: 8px 12px; border-radius: 6px;
}
.skip-link:focus { left: 8px; }
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}
.muted { color: var(--ink-3); }
.small { font-size: 0.9rem; }

/* ---------- header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  min-height: 72px;
}
.brand {
  display: flex; align-items: center; gap: 12px;
  text-decoration: none; color: var(--ink);
}
.brand img { height: 58px; width: auto; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name { font-family: var(--font-serif); font-weight: 700; font-size: 1.35rem; letter-spacing: 0.02em; }
.brand-sub { font-size: 0.78rem; color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.08em; }
.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  display: inline-block; padding: 8px 14px; border-radius: 8px;
  text-decoration: none; color: var(--ink-2); font-weight: 600;
}
.nav-links a:hover { background: var(--surface-2); color: var(--ink); }
.nav-links a[aria-current="page"] { color: var(--brass-strong); box-shadow: inset 0 -2px 0 var(--brass); border-radius: 8px 8px 0 0; }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--line); border-radius: 8px;
  width: 44px; height: 44px; cursor: pointer; color: var(--ink);
}
.nav-toggle svg { width: 24px; height: 24px; }
@media (max-width: 720px) {
  .brand-sub { display: none; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-links {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--surface); border-bottom: 1px solid var(--line);
    padding: 8px var(--gutter) 12px; box-shadow: var(--shadow);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 8px; border-radius: 6px; }
  .nav-links a[aria-current="page"] { box-shadow: inset 3px 0 0 var(--brass); border-radius: 6px; }
}

/* ---------- hero / carousel ---------- */
.hero { padding-block: clamp(20px, 4vw, 40px) 0; container-type: inline-size; }
.hero-head { margin-bottom: clamp(14px, 2vw, 22px); }
.hero-head h1 { font-size: clamp(1.7rem, 3.2vw, 2.3rem); margin-bottom: 4px; }
.hero-tagline { margin: 0; color: var(--ink-2); font-size: 1.1rem; max-width: 64ch; }
.slide img.crop-lower { object-position: center 65%; }
.slide img.crop-bottom { object-position: center 80%; }
.slide img.crop-left { object-position: 25% center; }   /* wide panoramas: keep the left-of-centre subject */
.carousel {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  background: var(--surface-2); box-shadow: var(--shadow);
}
/* Height is derived from the container width (3:2) and capped to the viewport.
   (aspect-ratio + max-height would transfer the cap to the width and shrink the track.) */
.carousel-track { position: relative; height: 66.667vw; height: min(66.667cqw, 72vh); min-height: 240px; }
.slide {
  position: absolute; inset: 0; margin: 0; opacity: 0; transition: opacity 600ms ease;
  visibility: hidden;
}
.slide.is-active { opacity: 1; visibility: visible; }
.slide img { width: 100%; height: 100%; object-fit: cover; }
.slide figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 64px 280px 16px 20px;
  color: #fff; font-size: 0.95rem;
  /* Stops are in px from the bottom so the overlay stays >= 78% opaque behind
     the caption text (WCAG 1.4.3) regardless of the photo underneath. */
  background: linear-gradient(to top, rgba(10, 14, 22, 0.86) 0, rgba(10, 14, 22, 0.8) 72px, rgba(10, 14, 22, 0) 100%);
  text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}
.carousel-btn {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 48px; height: 48px; border-radius: 50%; border: 0; cursor: pointer;
  background: rgba(255,255,255,0.88); color: var(--ink);
  display: grid; place-items: center; box-shadow: 0 2px 10px rgba(0,0,0,0.25);
  transition: background 150ms ease, transform 150ms ease;
}
.carousel-btn:hover { background: #fff; transform: translateY(-50%) scale(1.05); }
.carousel-btn svg { width: 22px; height: 22px; }
.carousel-btn.prev { left: 14px; }
.carousel-btn.next { right: 14px; }
.carousel-dots {
  position: absolute; right: 56px; bottom: 8px;
  display: flex; gap: 2px; margin: 0; padding: 2px 6px; list-style: none;
  background: rgba(10,14,22,0.55); border-radius: 999px;
}
.carousel-play {
  position: absolute; right: 12px; bottom: 8px; width: 36px; height: 36px;
  border-radius: 50%; border: 0; cursor: pointer; display: grid; place-items: center;
  background: rgba(10,14,22,0.55); color: #fff;
}
.carousel-play:hover { background: rgba(10,14,22,0.8); }
.carousel-play:focus-visible { outline: 3px solid #fff; outline-offset: 2px; }
.carousel-play svg { width: 18px; height: 18px; }
.carousel-play .icon-pause, .carousel-play[aria-pressed="true"] .icon-play { display: block; }
.carousel-play .icon-play, .carousel-play[aria-pressed="true"] .icon-pause { display: none; }
.carousel-dots button {
  width: 24px; height: 24px; border-radius: 50%; border: 0; padding: 0; cursor: pointer;
  background: transparent; position: relative;
}
.carousel-dots button::after {
  content: ""; position: absolute; left: 50%; top: 50%; width: 10px; height: 10px;
  transform: translate(-50%, -50%); border-radius: 50%; background: rgba(255,255,255,0.7);
}
.carousel-dots button[aria-current="true"]::after { background: var(--brass); width: 13px; height: 13px; }
.carousel-dots button:focus-visible { outline: 3px solid #fff; outline-offset: -1px; }
@media (max-width: 600px) {
  .carousel-track { height: 75vw; height: min(75cqw, 72vh); }
  .carousel-btn { width: 40px; height: 40px; }
  .carousel-dots { right: auto; left: 50%; transform: translateX(-50%); }
  .slide figcaption {
    font-size: 0.85rem; padding: 64px 14px 44px;
    background: linear-gradient(to top, rgba(10, 14, 22, 0.86) 0, rgba(10, 14, 22, 0.8) 124px, rgba(10, 14, 22, 0) 100%);
  }
  .carousel-play { right: 8px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .slide { transition: none; }
}

/* ---------- sections ---------- */
.section { padding-block: clamp(40px, 6vw, 72px); }
.section + .section, .page-head + .section { padding-top: 0; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; }
.eyebrow {
  display: inline-block; font-family: var(--font-sans); font-size: 0.8rem; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--brass-strong); margin-bottom: 8px;
}
.lede { font-size: 1.2rem; color: var(--ink-2); max-width: 62ch; }

.about-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(260px, 1fr); gap: clamp(24px, 4vw, 48px); align-items: stretch; }
@media (max-width: 840px) { .about-grid { grid-template-columns: 1fr; } }
.about-text { display: flex; flex-direction: column; }
.about-text p { max-width: 68ch; }
.about-text .btn-row { margin-top: auto; padding-top: 12px; }   /* buttons sit on the card's bottom edge */
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: clamp(18px, 3vw, 28px); box-shadow: var(--shadow);
}
.facts { display: grid; gap: 14px; margin: 0; }
.facts div { display: grid; gap: 2px; }
.facts dt { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-3); font-weight: 700; }
.facts dd { margin: 0; }
.logo-emblem { width: min(250px, 100%); margin: 0 auto 20px; }

.themes { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; margin-top: 8px; }
.theme { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.theme h3 { font-size: 1.05rem; margin-bottom: 6px; }
.theme p { margin: 0; color: var(--ink-2); font-size: 0.97rem; }
.theme .glyph { width: 28px; height: 28px; color: var(--brass); margin-bottom: 10px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 16px; border-radius: 8px; font-weight: 600; text-decoration: none;
  background: var(--btn-bg); color: var(--btn-ink); border: 1px solid transparent;
}
.btn:hover { background: var(--btn-bg-hover); color: var(--btn-ink); }
.btn.secondary { background: transparent; color: var(--ink); border-color: var(--line); }
.btn.secondary:hover { background: var(--surface-2); }
.btn.small { padding: 6px 12px; font-size: 0.9rem; }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 12px; }

/* ---------- news ---------- */
.news { list-style: none; padding: 0; margin: 0; }
.news li { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 12px; padding: 12px 0; border-top: 1px solid var(--line); }
.news li:last-child { border-bottom: 1px solid var(--line); }
.news time { font-weight: 700; font-size: 0.85rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--brass-strong); padding-top: 3px; }
@media (max-width: 480px) { .news li { grid-template-columns: 1fr; gap: 2px; } }

/* ---------- page header ---------- */
.page-head { padding-block: clamp(36px, 6vw, 64px) clamp(20px, 3vw, 32px); border-bottom: 1px solid var(--line); margin-bottom: clamp(28px, 4vw, 48px); }
.page-head p { max-width: 64ch; color: var(--ink-2); font-size: 1.1rem; margin: 0; }

/* ---------- people ---------- */
.sprite { position: absolute; }
.pi-card h3 { font-size: 1.7rem; margin-bottom: 2px; }
.pi-card .role + p { margin-top: 12px; }
.join h2 { font-size: 1.35rem; }
.join p { margin: 0; max-width: 70ch; }
.pi-card { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: clamp(20px, 3vw, 36px); align-items: start; }
.pi-card img { border-radius: var(--radius); box-shadow: var(--shadow); width: 100%; }
@media (max-width: 640px) { .pi-card { grid-template-columns: 1fr; } .pi-card img { max-width: 220px; } }
.role { color: var(--brass-strong); font-weight: 700; letter-spacing: 0.02em; }
.meta { list-style: none; padding: 0; margin: 12px 0 0; display: flex; flex-wrap: wrap; gap: 6px 18px; color: var(--ink-2); font-size: 0.95rem; }
.meta li { display: inline-flex; align-items: center; gap: 6px; }
.meta svg { width: 16px; height: 16px; color: var(--ink-3); flex: none; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 0; padding: 0; list-style: none; }
.tags li { background: var(--chip-soft); color: var(--chip); font-size: 0.82rem; font-weight: 600; padding: 3px 10px; border-radius: 999px; }

.people-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
@media (max-width: 960px) { .people-grid { grid-template-columns: 1fr; } }
.person { display: grid; grid-template-columns: 136px minmax(0, 1fr); gap: 20px; align-items: start; }
.person img { width: 136px; aspect-ratio: 34 / 46; object-fit: cover; border-radius: var(--radius); }
@media (max-width: 420px) {
  .person { grid-template-columns: 104px minmax(0, 1fr); gap: 14px; }
  .person img { width: 104px; }
}
.person h3 { margin-bottom: 2px; font-size: 1.15rem; }
.person .role { font-size: 0.85rem; }
.person p { font-size: 0.95rem; color: var(--ink-2); margin: 8px 0 0; }
.person .links { display: flex; flex-wrap: wrap; gap: 4px 14px; margin-top: 10px; font-size: 0.92rem; }

/* ---------- alumni ---------- */
.alumni-sub { font-size: 1.05rem; text-transform: uppercase; letter-spacing: 0.08em; font-family: var(--font-sans); color: var(--ink-3); margin: 8px 0 12px; }
.alumni-list { list-style: none; padding: 0; margin: 0 0 32px; display: grid; gap: 10px; }
.alumni-list li { display: grid; grid-template-columns: 64px minmax(0, 1fr); gap: 14px; align-items: start; padding: 14px 16px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.alumni-year { font-family: var(--font-serif); font-weight: 700; font-size: 1.15rem; color: var(--brass-strong); padding-top: 1px; }
.alumni-name { font-family: var(--font-serif); font-weight: 600; font-size: 1.1rem; }
.alumni-name a { color: inherit; }
.alumni-thesis { color: var(--ink-2); }
.alumni-thesis a { color: var(--ink-2); text-decoration-color: var(--line); }
.alumni-thesis a:hover { color: var(--brass-strong); text-decoration-color: currentColor; }
.alumni-now { font-size: 0.95rem; color: var(--ink-3); margin-top: 2px; }
.alumni-ms { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 6px 24px; }
.alumni-ms li { padding: 6px 0; border-bottom: 1px solid var(--line); }
@media (max-width: 480px) { .alumni-list li { grid-template-columns: 1fr; gap: 4px; } }

/* ---------- projects ---------- */
.project { display: grid; grid-template-columns: minmax(0, 1fr); gap: 8px; }
.project + .project { margin-top: 20px; }
.project-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; }
.project-head h3 { margin: 0; font-size: 1.35rem; }
.badge {
  display: inline-block; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.06em;
  text-transform: uppercase; padding: 3px 9px; border-radius: 999px;
  background: var(--brass-soft); color: var(--badge-ink);
}
.badge.active { background: #dcefdd; color: #256b31; }
@media (prefers-color-scheme: dark) { .badge.active { background: #1e3a24; color: #8fd39a; } }
.project .fund { color: var(--ink-3); font-size: 0.92rem; }
.project ul.links { list-style: none; padding: 0; margin: 4px 0 0; display: flex; flex-wrap: wrap; gap: 4px 18px; font-size: 0.95rem; }
.project-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.project-list li { padding: 14px 16px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.project-list strong { font-family: var(--font-serif); font-size: 1.05rem; }
.project-list .fund { display: block; }

/* ---------- publications ---------- */
.year-jump { margin-bottom: 8px; }
.pub-toolbar { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; margin-bottom: 24px; }
.pub-toolbar label { font-weight: 600; }
.pub-toolbar input[type="search"] {
  font: inherit; padding: 9px 12px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--surface); color: var(--ink); min-width: min(320px, 100%);
}
.year-nav { display: flex; flex-wrap: wrap; gap: 4px; list-style: none; padding: 0; margin: 0; }
.year-nav a { font-size: 0.85rem; padding: 4px 9px; line-height: 1.3; border-radius: 6px; text-decoration: none; color: var(--ink-2); background: var(--surface-2); }
.year-nav a:hover { color: var(--ink); background: var(--brass-soft); }
.pub-group { display: grid; grid-template-columns: 90px minmax(0, 1fr); gap: 12px 24px; padding-block: 18px; border-top: 1px solid var(--line); }
.pub-group h2 { font-size: 1.6rem; color: var(--brass-strong); margin: 0; position: sticky; top: 84px; }
.pub-group ol { list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; }
.pub { padding-left: 14px; border-left: 3px solid var(--line); }
.pub:hover { border-left-color: var(--brass); }
.pub .title { font-family: var(--font-serif); font-size: 1.12rem; font-weight: 600; color: var(--ink); text-decoration: underline; text-decoration-color: var(--line); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
.pub .title:hover { color: var(--brass-strong); text-decoration-color: currentColor; }
.pub .authors { color: var(--ink-2); font-size: 0.97rem; }
.pub .venue { color: var(--ink-3); font-size: 0.93rem; }
.pub .venue .abbr { font-weight: 700; color: var(--chip); }
.pub .pub-links { display: flex; flex-wrap: wrap; gap: 4px 12px; font-size: 0.88rem; margin-top: 4px; }
.pub .pub-links a { text-decoration: none; padding: 3px 10px; line-height: 1.3; border: 1px solid var(--line); border-radius: 999px; color: var(--ink-2); }
.pub .pub-links a:hover { border-color: var(--brass); color: var(--brass-strong); }
.pub-group.is-hidden, .pub.is-hidden { display: none; }
.no-results { color: var(--ink-3); padding-block: 24px; }
@media (max-width: 600px) {
  .pub-group { grid-template-columns: 1fr; gap: 8px; }
  .pub-group h2 { position: static; }
}

/* ---------- footer ---------- */
.site-footer { margin-top: clamp(40px, 6vw, 80px); border-top: 1px solid var(--line); background: var(--surface); }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px; padding-block: 36px 28px; }
.footer-grid h2 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-3); margin-bottom: 8px; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 4px; }
.footer-grid a { text-decoration: none; color: var(--ink-2); }
.footer-grid a:hover { color: var(--brass-strong); text-decoration: underline; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand img { height: 56px; width: auto; }
.footer-bottom { border-top: 1px solid var(--line); padding-block: 14px; font-size: 0.85rem; color: var(--ink-3); display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; align-items: center; }

/* retro visitor counter: filled in by main.js from GoatCounter; hidden until the number arrives */
.visit-counter { display: inline-flex; align-items: center; gap: 8px; }
.visit-counter[hidden] { display: none; }
.counter-digits {
  display: inline-flex; border-radius: 4px; overflow: hidden;
  background: var(--counter-bg); color: var(--counter-ink); border: 1px solid var(--counter-line);
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.85rem; font-weight: 600; line-height: 1; vertical-align: middle;
}
.counter-digits span { display: inline-block; width: 1.3em; padding-block: 4px; text-align: center; border-left: 1px solid var(--counter-line); }
.counter-digits span:first-child { border-left: 0; }

/* ---------- pronunciation line ---------- */
.pronounce { color: var(--ink-2); margin: -4px 0 14px; font-size: 1rem; }
.pronounce .ipa { font-family: var(--font-serif); color: var(--ink-3); margin-left: 2px; }