/* SFU High Energy Physics: shared stylesheet for every page.

   DESIGN LANGUAGE (see also "Design language" in README.md)
   - Colours carry meaning. Red is SFU's brand colour and also marks ATLAS.
     Blue marks P-ONE and nothing else. Purple marks IceCube. Anything that is
     not about a particular experiment uses the neutral dark tag (.tag-neutral).
   - Every page: header, dark banner (.page-hero, or .home-hero on the home page),
     sections (.research-section), a red "join" band (.cta), footer.
   - Section headings use <h2 class="section-title">.
   - All colours are defined here. Use the variables, not hex codes. */

:root {
  /* Brand and ATLAS */
  --red: #a6192e;          /* SFU red; also ATLAS */
  --red-dark: #7d1322;
  --red-deep: #3a0d15;     /* dark ATLAS backgrounds */
  --red-soft: #fbf3f4;     /* light ATLAS backgrounds */
  --red-light: #ff8a9a;    /* red text on dark backgrounds */
  /* P-ONE */
  --ocean: #0b5f8a;
  --ocean-dark: #084868;
  --ocean-deep: #062a40;
  --ocean-soft: #eef5f9;
  --ocean-light: #7cc4e8;  /* blue text on dark backgrounds */
  /* IceCube */
  --ice: #5b3fa0;
  --ice-dark: #46307d;
  --ice-deep: #221640;     /* dark IceCube backgrounds */
  --ice-soft: #f5f2fb;     /* light IceCube backgrounds */
  --ice-light: #c3b2f0;    /* purple text on dark backgrounds */
  /* Neutrals */
  --night: #0d1117;        /* dark banners and sections */
  /* Red glow on the right of the project switcher, flat top to bottom so the banner above can fade into it */
  --switch-glow: radial-gradient(40% 2000% at 85% 50%, rgba(166, 25, 46, 0.35), transparent 70%);
  --ink: #1f2328;
  --muted: #59636e;
  --grey: #9aa3ad;         /* "other experiment" */
  --line: #d8dde3;
  --bg: #ffffff;
  --bg-soft: #f5f6f8;
  /* Content width: 1080px on laptops, growing with the window on large screens up to 1680px */
  --max: clamp(1080px, 78vw, 1680px);
}

* { box-sizing: border-box; }

/* Text grows a little with the content width on large screens (16px up to 19px), so lines don't get too long */
html { font-size: clamp(16px, 0.25vw + 12.4px, 19px); }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
}

a { color: var(--red); }
a:hover { color: var(--red-dark); }

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

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* Header and menu */
.site-header { border-bottom: 3px solid var(--red); background: var(--bg); }
.site-header .wrap {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 12px; padding-top: 14px; padding-bottom: 14px;
}
.brand { font-weight: 700; font-size: 1.15rem; color: var(--ink); text-decoration: none; }
.brand span { color: var(--red); }
.site-nav ul { list-style: none; display: flex; flex-wrap: wrap; gap: 4px 18px; margin: 0; padding: 0; }
.site-nav a { color: var(--ink); text-decoration: none; font-weight: 500; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--red); }

/* Page sections */
main { padding: 32px 0 48px; }
h1, h2, h3 { line-height: 1.25; }
h1 { font-size: 2rem; margin: 0 0 12px; }
h2 { font-size: 1.4rem; margin-top: 36px; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 46em; }


.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-top: 24px; }
.card { border: 1px solid var(--line); border-radius: 10px; padding: 20px; background: var(--bg); }
.card h3 { margin-top: 0; }
.card .more { font-weight: 600; text-decoration: none; }


/* People */
.people { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 16px; padding: 0; list-style: none; }
.people li { border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; }
.people .name { font-weight: 600; display: block; }
.people .role { color: var(--muted); font-size: 0.95rem; }
/* Photo at the top of a card. Square crop, biased upward so faces stay in frame. */
.people .photo { display: block; width: 100%; aspect-ratio: 1; object-fit: cover; object-position: 50% 25%; border-radius: 6px; margin-bottom: 12px; background: var(--bg-soft); }


/* Footer */
.site-footer { border-top: 1px solid var(--line); background: var(--bg-soft); color: var(--muted); font-size: 0.95rem; }
.site-footer .wrap { padding-top: 20px; padding-bottom: 20px; display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }
.site-footer a { color: var(--muted); }

/* Small photo credit line at the bottom of a page. */
.credits { color: var(--muted); font-size: 0.8rem; margin-top: 40px; }
.credits a { color: var(--muted); }

/* Buttons */
.button { display: inline-block; padding: 11px 22px; border-radius: 999px; background: var(--red); color: #fff; font-weight: 600; text-decoration: none; border: 2px solid var(--red); transition: background 0.15s, color 0.15s; }
.button:hover { background: var(--red-dark); border-color: var(--red-dark); color: #fff; }
.button-ghost { background: transparent; border-color: #fff; color: #fff; }
.button-ghost:hover { background: #fff; border-color: #fff; color: var(--ink); }
.button-light { background: #fff; border-color: #fff; color: var(--red); }
.button-light:hover { background: transparent; color: #fff; border-color: #fff; }

/* ---------- Home page ---------- */

/* Hero: two photos side by side, darkened, with text on top. */
.home-hero { position: relative; display: flex; flex-direction: column; min-height: min(78vh, 640px); color: #fff; background: var(--night); overflow: hidden; }
.home-hero-photos { position: absolute; inset: 0; display: grid; grid-template-columns: 1fr 1fr; }
.home-hero-photos img { width: 100%; height: 100%; object-fit: cover; }
.home-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(100deg, rgba(10, 14, 20, 0.92) 0%, rgba(10, 14, 20, 0.7) 45%, rgba(10, 14, 20, 0.25) 100%); }
.home-hero-text, .home-hero-labels { position: relative; z-index: 1; width: 100%; }
.home-hero-text { padding-top: 96px; padding-bottom: 48px; }
.home-hero h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); max-width: 12em; margin-bottom: 16px; letter-spacing: -0.01em; }
.home-hero .lead { color: rgba(255, 255, 255, 0.88); max-width: 34em; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.8rem; font-weight: 600; color: var(--red-light); margin: 0 0 12px; }
.buttons { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }.home-hero-labels { margin-top: auto; display: flex; justify-content: space-between; gap: 12px; padding-bottom: 18px; font-size: 0.8rem; color: rgba(255, 255, 255, 0.75); }
.home-hero-labels span:last-child { text-align: right; }
.home-hero-labels small { display: block; font-size: 0.7rem; font-style: italic; opacity: 0.7; }

/* The home page sections set their own spacing. */
main.home { padding-top: 0; }
.section-title { font-size: 1.7rem; margin: 56px 0 20px; }

/* Facts strip */
.facts { background: var(--bg-soft); border-bottom: 1px solid var(--line); }
.facts .wrap { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 24px; padding-top: 28px; padding-bottom: 28px; }
.fact strong { display: block; font-size: 1.9rem; line-height: 1.1; color: var(--red); }
.fact span { color: var(--muted); font-size: 0.92rem; }
.fact { text-align: center; }

/* Big photo panels for the experiments */
.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
/* An odd card out (e.g. the third, IceCube) sits centred on its own row, the same width as the others */
.feature-grid > :last-child:nth-child(odd) { grid-column: 1 / -1; justify-self: center; width: calc(50% - 10px); }
@media (max-width: 700px) {
  .feature-grid { grid-template-columns: 1fr; }
  .feature-grid > :last-child:nth-child(odd) { width: 100%; }
}
/* Three across (index.html, join.html). On join.html each card sits under its column of the facts strip: same 24px gap as .facts */
.feature-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.feature-grid-3 > :last-child:nth-child(odd) { grid-column: auto; justify-self: stretch; width: auto; }
.feature-grid-3 .feature-text { padding: 20px; }
.feature-grid-3 .feature h3 { font-size: 1.6rem; }
@media (max-width: 900px) {
  .feature-grid-3 { grid-template-columns: 1fr; }
}
.feature { position: relative; display: flex; align-items: flex-end; min-height: 420px; border-radius: 14px; overflow: hidden; color: #fff; text-decoration: none; background: var(--night); }
.feature img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.feature::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(10, 14, 20, 0.92) 0%, rgba(10, 14, 20, 0.55) 50%, rgba(10, 14, 20, 0.05) 100%); }
.feature-text { position: relative; z-index: 1; padding: 24px; }
.feature h3 { font-size: 1.8rem; margin: 6px 0 8px; }
.feature p { color: rgba(255, 255, 255, 0.88); margin: 0 0 12px; }
.feature .more { font-weight: 600; }
.feature:hover, .feature:focus-visible { color: #fff; }
.feature:hover img, .feature:focus-visible img { transform: scale(1.04); }
.tag { display: inline-block; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; padding: 3px 10px; border-radius: 999px; background: var(--red); color: #fff; }

/* Clickable cards (computing, education) */
.card-link { display: block; color: var(--ink); text-decoration: none; transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s; }
.card-link:hover { color: var(--ink); border-color: var(--red); box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08); transform: translateY(-2px); }
.card-link .more { color: var(--red); }
.icon { width: 36px; height: 36px; fill: none; stroke: var(--red); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; margin-bottom: 8px; }

/* News cards */
.news-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.news-card { display: block; padding: 20px 22px; border-left: 4px solid var(--red); background: var(--bg-soft); border-radius: 0 10px 10px 0; color: var(--ink); text-decoration: none; transition: background 0.15s; }
.news-card:hover { background: color-mix(in srgb, var(--bg-soft) 85%, var(--ink)); color: var(--ink); }
.news-card .date { color: var(--muted); font-size: 0.85rem; font-weight: 600; }
.news-card h3 { margin: 6px 0 10px; font-size: 1.15rem; }
.news-card .more { color: var(--red); font-weight: 600; font-size: 0.95rem; }

/* Red "join us" band */
.cta { background: var(--red); color: #fff; margin-top: 56px; }
.cta .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px; padding-top: 40px; padding-bottom: 40px; }
.cta h2 { margin: 0 0 6px; }
.cta p { margin: 0; color: rgba(255, 255, 255, 0.9); }

@media (max-width: 640px) {
  .home-hero-text { padding-top: 64px; }
  .home-hero::after { background: rgba(10, 14, 20, 0.78); }
  .facts .wrap { grid-template-columns: 1fr 1fr; gap: 20px 16px; }
  .fact strong { font-size: 1.5rem; }
  .feature { min-height: 360px; }
}
@media (prefers-reduced-motion: reduce) {
  .feature img, .card-link, .button { transition: none; }
  .feature:hover img { transform: none; }
  .card-link:hover { transform: none; }
}

/* ---------- Inner page hero (used on Research; reusable on other pages) ---------- */
.page-hero { position: relative; color: #fff; background: var(--night); overflow: hidden; }
.page-hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 70% 50%; opacity: 0.55; }
.page-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(10, 14, 20, 0.95) 0%, rgba(10, 14, 20, 0.6) 60%, rgba(10, 14, 20, 0.2) 100%); }
.page-hero-text { position: relative; z-index: 1; padding-top: 72px; padding-bottom: 56px; }
.page-hero h1 { font-size: clamp(2rem, 4.5vw, 3rem); max-width: 14em; letter-spacing: -0.01em; }
.page-hero .lead { color: rgba(255, 255, 255, 0.88); max-width: 36em; }
.jump-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.jump-links a { padding: 7px 16px; border: 1px solid rgba(255, 255, 255, 0.5); border-radius: 999px; color: #fff; text-decoration: none; font-weight: 500; font-size: 0.95rem; }
.jump-links a:hover { background: #fff; color: var(--ink); }
/* Jump links to one experiment take its colour (news.html, publications.html) */
.jump-links a.jump-atlas { background: var(--red); border-color: var(--red); }
.jump-links a.jump-pone { background: var(--ocean); border-color: var(--ocean); }
.jump-links a.jump-ice { background: var(--ice); border-color: var(--ice); }
.jump-links a.jump-atlas:hover { background: var(--red-dark); border-color: var(--red-dark); color: #fff; }
.jump-links a.jump-pone:hover { background: var(--ocean-dark); border-color: var(--ocean-dark); color: #fff; }
.jump-links a.jump-ice:hover { background: var(--ice-dark); border-color: var(--ice-dark); color: #fff; }

/* ---------- Research page ---------- */
main.research { padding: 0; }
.research-section { padding: 64px 0; scroll-margin-top: 12px; }
.section-alt { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.research-section h2 { font-size: 2.2rem; margin: 10px 0 8px; }
.subhead { font-size: 1.3rem; margin: 48px 0 16px; }
.tag-ocean { background: var(--ocean); }

/* Text and a photo side by side; stacks on narrow screens. */
.split { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 32px 40px; align-items: center; margin-top: 8px; }
.split + .split, .steps + .split { margin-top: 40px; }

.photo-figure { margin: 0; }
.photo-figure img { display: block; width: 100%; aspect-ratio: 3 / 2; object-fit: cover; border-radius: 12px; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12); }
.photo-figure figcaption { color: var(--muted); font-size: 0.9rem; margin-top: 10px; }
.photo-figure .credit { display: block; font-size: 0.8rem; }
.photo-figure .credit a { color: var(--muted); }

/* Research topic tiles */
.topic-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.topic { padding: 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--bg); }
.topic h4 { margin: 4px 0 6px; font-size: 1.05rem; }
.topic p { margin: 0; color: var(--muted); font-size: 0.95rem; }

/* Dark highlight box with a big number */
.callout { display: grid; grid-template-columns: auto 1fr; gap: 28px; align-items: center; margin-top: 40px; padding: 28px 32px; border-radius: 14px; background: var(--ink); color: #fff; scroll-margin-top: 12px; }
.callout h3 { margin: 0 0 8px; }
.callout p { margin: 0; color: rgba(255, 255, 255, 0.85); }
.callout-stat { text-align: center; padding-right: 28px; border-right: 1px solid rgba(255, 255, 255, 0.2); }
.callout-stat strong { display: block; font-size: 3rem; line-height: 1; color: var(--red-light); }
.callout-stat span { font-size: 0.85rem; color: rgba(255, 255, 255, 0.75); }

/* Numbered "how it works" steps */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; counter-reset: step; }
.steps li { counter-increment: step; position: relative; padding: 20px 20px 20px 68px; background: var(--bg); border: 1px solid var(--line); border-radius: 12px; }
.steps li::before { content: counter(step); position: absolute; left: 20px; top: 20px; width: 34px; height: 34px; border-radius: 50%; background: var(--ocean); color: #fff; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.steps h4 { margin: 4px 0 6px; }
.steps p { margin: 0; color: var(--muted); font-size: 0.95rem; }

/* Vertical timeline */
.timeline { list-style: none; padding: 0; margin: 16px 0 20px 7px; border-left: 2px solid var(--line); }
.timeline li { position: relative; padding: 0 0 18px 24px; }
.timeline li::before { content: ""; position: absolute; left: -9px; top: 5px; width: 16px; height: 16px; border-radius: 50%; background: var(--bg); border: 2px solid var(--line); box-sizing: border-box; }
.timeline li.done::before { background: var(--ocean); border-color: var(--ocean); }
.timeline li.now::before { border-color: var(--ocean); box-shadow: 0 0 0 4px rgba(11, 95, 138, 0.2); }
.timeline .when { display: block; font-weight: 700; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ocean); }

.research .cta { margin-top: 0; }

@media (max-width: 640px) {
  .page-hero::after { background: rgba(10, 14, 20, 0.8); }
  .research-section { padding: 48px 0; }
  .callout { grid-template-columns: 1fr; padding: 24px; }
  .callout-stat { border-right: 0; padding-right: 0; border-bottom: 1px solid rgba(255, 255, 255, 0.2); padding-bottom: 16px; }
}

/* ---------- Computing page ---------- */
/* Hero without a photo: a faint grid pattern instead. */
.page-hero-grid { background-color: var(--night); background-image: linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px); background-size: 32px 32px; }
.page-hero-grid::after { background: radial-gradient(ellipse at 85% 30%, rgba(166, 25, 46, 0.45), transparent 60%); }
/* With a project switcher below (research.html, news.html), banner and bar read as one panel: the grid is laid from the
   banner's bottom edge so its lines run on into the bar, and the banner uses the bar's glow (one band, top to bottom). */
body:has(.project-switch) .page-hero-grid { background-position: left bottom; }
body:has(.project-switch) .page-hero-grid::after { background: var(--switch-glow); }

.provides { padding: 24px 28px; border: 1px solid var(--line); border-radius: 14px; background: var(--bg); }
.provides h3 { margin-top: 0; }
.check-list { list-style: none; padding: 0; margin: 0; }
.check-list li { position: relative; padding: 0 0 12px 30px; }
.check-list li::before { content: ""; position: absolute; left: 2px; top: 6px; width: 14px; height: 8px; border-left: 3px solid var(--red); border-bottom: 3px solid var(--red); transform: rotate(-45deg); }

.timeline-red { border-left-color: var(--line); }
.timeline-red li.done::before { background: var(--red); border-color: var(--red); }
.timeline-red li.now::before { border-color: var(--red); box-shadow: 0 0 0 4px rgba(166, 25, 46, 0.2); }
.timeline-red .when { color: var(--red); }

.pill-list { list-style: none; padding: 0; margin: 0 0 20px; display: flex; flex-wrap: wrap; gap: 8px; }
.pill-list li { padding: 4px 12px; border-radius: 999px; background: var(--bg-soft); border: 1px solid var(--line); font-size: 0.9rem; }
.contact-list { padding-left: 18px; }

/* Dark section with the grid tiers */
.section-dark { background: var(--night); color: #fff; }
.section-dark .lead { color: rgba(255, 255, 255, 0.8); }
.tiers { list-style: none; padding: 0; margin: 36px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; }
.tier { position: relative; padding: 24px; border-radius: 14px; background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.14); }
.tier h3 { margin: 8px 0 6px; }
.tier p { margin: 0; color: rgba(255, 255, 255, 0.78); font-size: 0.95rem; }
.tier-label { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--red-light); }
.tier-sfu { background: var(--red); border-color: var(--red); }
.tier-sfu .tier-label { color: #fff; opacity: 0.85; }
.tier-sfu p { color: rgba(255, 255, 255, 0.92); }
/* Arrow between steps */
.tier + .tier::before { content: "→"; position: absolute; left: -38px; top: 50%; transform: translateY(-50%); font-size: 1.8rem; color: rgba(255, 255, 255, 0.5); }

/* Spec sheet (definition list) */
.spec-sheet { margin: 0; border-radius: 14px; overflow: hidden; border: 1px solid var(--line); background: var(--bg); }
.spec-sheet div { display: flex; justify-content: space-between; gap: 16px; padding: 14px 20px; border-bottom: 1px solid var(--line); }
.spec-sheet div:last-child { border-bottom: 0; }
.spec-sheet dt { color: var(--muted); }
.spec-sheet dd { margin: 0; font-weight: 700; text-align: right; }

@media (max-width: 760px) {
  .tiers { grid-template-columns: 1fr; gap: 36px; }
  .tier + .tier::before { content: "↓"; left: 50%; top: -32px; transform: translateX(-50%); }
}

/* ---------- People page ---------- */
.people-heading { font-size: 1.8rem; margin: 0 0 24px; }
.people { gap: 20px; }
.people li { padding: 0 0 16px; overflow: hidden; border-radius: 14px; background: var(--bg); transition: box-shadow 0.15s, transform 0.15s; }
.people li:hover { box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08); transform: translateY(-2px); }
.people .photo { border-radius: 0; margin-bottom: 14px; }
.people .name, .people .role { display: block; padding: 0 16px; }
.people .name { font-size: 1.08rem; }
.people .name a { color: var(--ink); text-decoration: none; }
.people .name a:hover { color: var(--red); }
.people .role a { color: inherit; text-decoration: none; }
.people .role a:hover { color: var(--red); text-decoration: underline; }
/* Smaller cards with a round badge, for former members */
.people-compact { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.people-compact li { display: grid; grid-template-columns: 56px 1fr; column-gap: 14px; align-items: center; align-content: center; padding: 14px 16px; }
.people-compact .photo { grid-row: span 3; width: 56px; margin: 0; border-radius: 50%; }
.people-compact .name, .people-compact .role { padding: 0; }

/* Photo-card lists pick their column count from how many cards they have, so rows come out balanced:
   1-3 cards fill one row; 4 and 8 make rows of 4; 5, 6 and 9 make rows of 3 (5 = 3 + 2); anything else gets 4 per row.
   Every card is the width of one in a row of 4, so photos are the same size in every list; shorter rows sit centred.
   Phones keep 2 per row (see the 640px block further down). */
@media (min-width: 641px) {
  .people:not(.people-compact) { --card: calc((100% - 60px) / 4); grid-template-columns: repeat(4, var(--card)); justify-content: center; }
  .people:not(.people-compact):has(> li:last-child:nth-child(1)) { grid-template-columns: var(--card); }
  .people:not(.people-compact):has(> li:last-child:nth-child(2)) { grid-template-columns: repeat(2, var(--card)); }
  .people:not(.people-compact):has(> li:last-child:nth-child(3)),
  .people:not(.people-compact):has(> li:last-child:nth-child(5)),
  .people:not(.people-compact):has(> li:last-child:nth-child(6)),
  .people:not(.people-compact):has(> li:last-child:nth-child(9)) { grid-template-columns: repeat(3, var(--card)); }
  /* The heading of a centred list lines up with its first card: indent = (full width - n cards - gaps) / 2 */
  .wrap:has(> .people:not(.people-compact) > li:last-child:nth-child(3)) > .section-title,
  .wrap:has(> .people:not(.people-compact) > li:last-child:nth-child(5)) > .section-title,
  .wrap:has(> .people:not(.people-compact) > li:last-child:nth-child(6)) > .section-title,
  .wrap:has(> .people:not(.people-compact) > li:last-child:nth-child(9)) > .section-title { margin-left: calc(12.5% + 2.5px); }
  .wrap:has(> .people:not(.people-compact) > li:last-child:nth-child(2)) > .section-title { margin-left: calc(25% + 5px); }
  .wrap:has(> .people:not(.people-compact) > li:last-child:nth-child(1)) > .section-title { margin-left: calc(37.5% + 7.5px); }
}

/* ---------- Publications page ---------- */
.thesis-year { display: grid; grid-template-columns: 120px 1fr; gap: 24px; padding: 24px 0; border-top: 1px solid var(--line); }
.thesis-year .year { margin: 0; font-size: 2rem; color: var(--red); line-height: 1.1; }
.theses { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.thesis { padding: 16px 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--bg); transition: border-color 0.15s; }
.thesis:hover { border-color: var(--red); }
.thesis a { display: block; font-weight: 600; color: var(--ink); text-decoration: none; }
.thesis a:hover { color: var(--red); }
.thesis .author { display: block; color: var(--muted); font-size: 0.92rem; margin-top: 2px; }
.callout a.on-dark { color: var(--red-light); }
.callout-stat strong { font-size: clamp(2rem, 5vw, 3rem); }

/* ---------- News page ---------- */
.news-list { display: grid; gap: 28px; }
.news-item { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); gap: 0; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; background: var(--bg); }
.news-item > img { width: 100%; height: 100%; min-height: 220px; object-fit: cover; }
.news-item:not(:has(> img)) { grid-template-columns: 1fr; }
.news-body { padding: 28px 32px; align-self: center; }
.news-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; color: var(--muted); font-size: 0.9rem; margin: 0 0 10px; }
.news-body h3 { font-size: 1.4rem; margin: 0 0 10px; }
.news-body h3 a { color: var(--ink); text-decoration: none; }
.news-body h3 a:hover { color: var(--red); }
.news-body p:last-child { margin: 0; color: var(--muted); }

/* ---------- Join page ---------- */
.topic-grid { margin-top: 24px; }
.paths { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
.path { padding: 28px; border-radius: 14px; background: var(--bg); border: 1px solid var(--line); scroll-margin-top: 12px; }
.path h2 { margin: 10px 0 20px; font-size: 1.6rem; }
.path .steps { grid-template-columns: 1fr; }

/* Join page: facts strip with one colour per experiment, and "who to contact" cards with the experiment's colour on top. */
.fact-atlas strong { color: var(--red); }
.fact-ice strong { color: var(--ice); }
.fact-pone strong { color: var(--ocean); }
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-top: 24px; }
.contact { --c: var(--red); padding: 22px 24px; border-radius: 14px; background: var(--bg); border: 1px solid var(--line); border-top: 5px solid var(--c); }
.contact-ice { --c: var(--ice); }
.contact-pone { --c: var(--ocean); }
.contact h3 { margin: 0 0 10px; color: var(--c); font-size: 1.3rem; }
.contact ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.contact a { color: var(--ink); font-weight: 600; text-decoration: none; }
.contact a::after { content: " →"; color: var(--c); }
.contact a:hover { color: var(--c); }
.contact-more { margin: 24px 0 0; color: var(--muted); }
.steps-red li::before { background: var(--red); }

@media (max-width: 640px) {
  .thesis-year { grid-template-columns: 1fr; gap: 12px; }
  .people:not(.people-compact) { grid-template-columns: 1fr 1fr; gap: 12px; }
  .people:not(.people-compact) .name, .people:not(.people-compact) .role { padding: 0 12px; }
  .people .role { font-size: 0.85rem; }
  .news-item { grid-template-columns: 1fr; }
  .news-item > img { min-height: 0; aspect-ratio: 16 / 9; height: auto; }
  .news-body { padding: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  .people li { transition: none; }
  .people li:hover { transform: none; }
}

/* External news feed (P-ONE collaboration news on news.html) */
/* Text on the left, button always bottom-right, whatever the length of the text; stacked on phones */
.section-head { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 20px 40px; margin-bottom: 28px; }
.section-head .button { white-space: nowrap; }
@media (max-width: 640px) { .section-head { grid-template-columns: 1fr; } .section-head .button { justify-self: start; } }
.section-head h2 { margin: 10px 0 8px; }
.section-head .lead { margin: 0; }
.button-ocean { background: var(--ocean); border-color: var(--ocean); }
.button-ocean:hover { background: var(--ocean-dark); border-color: var(--ocean-dark); }
.feed { --feed: var(--ocean); list-style: none; padding: 0; margin: 0; border-left: 2px solid color-mix(in srgb, var(--feed) 25%, transparent); }
.feed li { position: relative; padding: 0 0 26px 28px; }
.feed li::before { content: ""; position: absolute; left: -7px; top: 6px; width: 12px; height: 12px; border-radius: 50%; background: var(--feed); }
.feed time { display: block; font-size: 0.82rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--feed); }
.feed a { font-weight: 600; font-size: 1.08rem; color: var(--ink); text-decoration: none; }
.feed a:hover { color: var(--feed); text-decoration: underline; }
.feed p { margin: 4px 0 0; color: var(--muted); font-size: 0.95rem; }
.callout + .callout { margin-top: 20px; }
.callout-ocean { background: var(--ocean-deep); }
.callout-ocean .callout-stat strong, .callout-ocean a.on-dark { color: var(--ocean-light); }
.callout-ice { background: var(--ice-deep); }
.callout-ice .callout-stat strong, .callout-ice a.on-dark { color: var(--ice-light); }

/* ---------- Research page: one colour-coded "chapter" per experiment ---------- */
/* Each chapter sets --accent; everything inside picks it up. Red = ATLAS, blue = P-ONE, purple = IceCube. */
.chapter-atlas { --accent: var(--red); --accent-soft: var(--red-soft); --accent-dark: var(--red-deep); }
.chapter-pone  { --accent: var(--ocean); --accent-soft: var(--ocean-soft); --accent-dark: var(--ocean-deep); }
.chapter-ice   { --accent: var(--ice); --accent-soft: var(--ice-soft); --accent-dark: var(--ice-deep); }

/* Project switcher (research.html, news.html): a dark bar that sticks to the top of the screen while you are inside the
   element that contains it. js/project-switch.js marks the current link (aria-current) and sets --progress (0 to 1) for the
   line along the bottom. Each link takes its experiment's colour: --c fills the current link, --c-light is its text otherwise. */
/* Background matches the dark page banners (.page-hero-grid): night blue, faint grid, red glow on the right. */
.project-switch { --accent: #fff; position: sticky; top: 0; z-index: 10; background-color: var(--night); background-image: var(--switch-glow), linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px); background-size: auto, 32px 32px, 32px 32px; box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18); }
.project-switch .wrap { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; padding-top: 18px; padding-bottom: 21px; } /* bottom = top + the 3px progress line */
.project-switch a { --c: #fff; --c-light: rgba(255, 255, 255, 0.85); display: inline-flex; align-items: center; gap: 8px; padding: 6px 16px; border: 1px solid rgba(255, 255, 255, 0.22); border-radius: 999px; color: var(--c-light); font-weight: 600; font-size: 0.95rem; text-decoration: none; transition: background 0.15s, color 0.15s, border-color 0.15s; }
.project-switch a::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.project-switch a.switch-atlas { --c: var(--red); --c-light: var(--red-light); }
.project-switch a.switch-ice { --c: var(--ice); --c-light: var(--ice-light); }
.project-switch a.switch-pone { --c: var(--ocean); --c-light: var(--ocean-light); }
.project-switch a:hover { background: rgba(255, 255, 255, 0.1); border-color: rgba(255, 255, 255, 0.4); color: var(--c-light); }
.project-switch a[aria-current] { background: var(--c); border-color: var(--c); color: #fff; }
.project-switch a.switch-group[aria-current] { color: var(--ink); }
.project-switch:has(a.switch-atlas[aria-current]) { --accent: var(--red-light); }
.project-switch:has(a.switch-ice[aria-current]) { --accent: var(--ice-light); }
.project-switch:has(a.switch-pone[aria-current]) { --accent: var(--ocean-light); }
.project-switch::after { content: ""; position: absolute; left: 0; bottom: 0; height: 3px; width: calc(var(--progress, 0) * 100%); background: var(--accent); }
/* Links that jump below the bar land just under it (chapter banners are fine to tuck behind it). */
.project-switch ~ .research-section, .project-switch ~ * .callout { scroll-margin-top: 64px; }
@media (prefers-reduced-motion: no-preference) { html:has(.project-switch) { scroll-behavior: smooth; } }
@media (max-width: 460px) {
  .project-switch .wrap { gap: 5px; padding-left: 10px; padding-right: 10px; }
  .project-switch a { padding: 5px 10px; font-size: 0.85rem; }
  .project-switch a::before { display: none; }
}


/* Chapter banner: full-width photo, darkened in the experiment's colour */
.chapter { scroll-margin-top: 0; }
.chapter-banner { position: relative; min-height: 440px; display: flex; align-items: flex-end; color: #fff; background: var(--accent-dark); overflow: hidden; }
.chapter-banner > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.chapter-banner::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, var(--accent-dark) 0%, color-mix(in srgb, var(--accent-dark) 70%, transparent) 45%, color-mix(in srgb, var(--accent-dark) 15%, transparent) 100%); }
/* The first chapter's photo fades in from the project switcher's night blue above it, so there is no hard edge between them */
.project-switch + .chapter .chapter-banner::before { content: ""; position: absolute; z-index: 1; inset: 0 0 auto 0; height: 160px; background: linear-gradient(to bottom, var(--night) 0%, color-mix(in srgb, var(--night) 60%, transparent) 40%, transparent 100%); }
.chapter-banner-text { position: relative; z-index: 1; width: 100%; padding-top: 80px; padding-bottom: 56px; }
.chapter-kicker { margin: 0; font-size: 0.85rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em; color: color-mix(in srgb, var(--accent) 35%, white); }
.chapter-banner h2 { font-size: clamp(3rem, 8vw, 5.5rem); line-height: 1; margin: 6px 0 12px; letter-spacing: -0.02em; }
.chapter-tagline { margin: 0; max-width: 34em; font-size: 1.15rem; color: rgba(255, 255, 255, 0.9); }
.chapter-credit, .hero-credit { position: absolute; right: 16px; bottom: 10px; z-index: 1; margin: 0; max-width: 60%; text-align: right; font-size: 0.72rem; color: rgba(255, 255, 255, 0.65); }
.chapter-credit a, .hero-credit a { color: rgba(255, 255, 255, 0.8); }

/* Chapter body, tinted in the experiment's colour, with a coloured rule on top */
.chapter-body { padding: 64px 0 72px; background: var(--accent-soft); border-top: 6px solid var(--accent); }
.chapter-body .lead { color: var(--ink); font-size: 1.25rem; line-height: 1.55; }
.chapter .icon { stroke: var(--accent); }
.chapter .topic { border-color: color-mix(in srgb, var(--accent) 18%, var(--line)); }
.chapter .topic a, .chapter-body a { color: var(--accent); }
.chapter .steps li::before { background: var(--accent); }
.chapter .callout { background: var(--accent-dark); }
.chapter .callout-stat strong { color: color-mix(in srgb, var(--accent) 45%, white); }
.chapter .subhead { color: var(--accent-dark); }
.split-top { align-items: start; margin-top: 8px; }
/* The numbers card sits vertically centred against the timeline beside it */
.split-top > .depth-card { align-self: center; margin-top: 0; }
/* Source references: small superscript numbers that link straight to the source, and a short list at the end of each chapter */
sup.ref { font-size: 0.68em; line-height: 0; margin-left: 1px; }
sup.ref a { color: var(--accent, var(--red)); text-decoration: none; font-weight: 600; padding: 0 1px; }
sup.ref a:hover { text-decoration: underline; }
.depth-card sup.ref a, .callout sup.ref a { color: inherit; opacity: 0.8; }
.sources { margin-top: 40px; font-size: 0.85rem; color: var(--muted); }
.sources h4 { margin: 0 0 6px; font-size: 0.9rem; color: var(--ink); }
.sources ol { margin: 0; padding-left: 1.6em; display: grid; gap: 2px; }
.sources a { color: var(--muted); }
.sources a:hover { color: var(--accent, var(--red)); }
/* The SFU and TRIUMF section (research.html) sits outside the chapters, so it takes the site red as its accent */
#triumf { --accent: var(--red); }
#triumf .contact p { margin: 0 0 12px; }
#triumf .contact p:last-child { margin-bottom: 0; font-weight: 600; }
#triumf .contact p:last-child a { color: var(--c); }
.contact sup.ref a::after { content: none; }
.chapter-links { display: flex; flex-wrap: wrap; gap: 8px 24px; margin: 40px 0 0; padding-top: 20px; border-top: 1px solid color-mix(in srgb, var(--accent) 20%, var(--line)); font-weight: 600; }
.chapter-links a { text-decoration: none; }
.chapter-links a:hover { text-decoration: underline; }

/* Video beside a short description (research.html, P-ONE). The frame keeps a 16:9 shape at any width. */
.video-feature { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 28px; align-items: center; margin-top: 40px; }
.video-figure { margin: 0; }
.video-frame { aspect-ratio: 16 / 9; border-radius: 14px; overflow: hidden; background: var(--night); box-shadow: 0 10px 30px rgba(6, 42, 64, 0.25); }
.video-frame iframe, .video-frame video { display: block; width: 100%; height: 100%; border: 0; }
.video-frame video { object-fit: cover; background: var(--night); }
.video-figure figcaption { color: var(--muted); font-size: 0.85rem; margin-top: 8px; }
.video-figure figcaption a { color: var(--muted); }
.video-feature .subhead { margin-top: 0; }
.video-feature p { margin: 0 0 12px; }
@media (max-width: 800px) { .video-feature { grid-template-columns: 1fr; } }

/* "What students work on": a panel tinted in the experiment's colour, with a colour strip along the top,
   holding one white tile per topic. Each tile has an icon in a soft rounded square. */
.student-work { position: relative; overflow: hidden; margin-top: 48px; padding: 34px 32px 32px; border-radius: 18px;
  background: linear-gradient(160deg, #fff 0%, color-mix(in srgb, var(--accent) 7%, #fff) 100%);
  border: 1px solid color-mix(in srgb, var(--accent) 16%, var(--line));
  box-shadow: 0 14px 36px color-mix(in srgb, var(--accent-dark) 12%, transparent); }
.student-work::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 5px; background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent) 35%, white)); }
.student-eyebrow { margin: 0 0 4px; font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em; color: var(--accent); }
.student-work .subhead { margin: 0 0 6px; font-size: 1.5rem; }
.student-work > p:not(.student-eyebrow) { margin: 0 0 22px; color: var(--muted); max-width: 46em; }
.student-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.student-list li { display: grid; grid-template-columns: 46px minmax(0, 1fr); gap: 14px; align-items: center; padding: 16px 18px; background: #fff; border: 1px solid color-mix(in srgb, var(--accent) 12%, var(--line)); border-radius: 14px; font-size: 0.93rem; line-height: 1.5; color: var(--muted); transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s; }
.student-list li:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--accent) 35%, var(--line)); box-shadow: 0 8px 20px color-mix(in srgb, var(--accent-dark) 10%, transparent); }
.student-list .icon { width: 46px; height: 46px; padding: 11px; margin: 0; border-radius: 12px; background: color-mix(in srgb, var(--accent) 11%, white); stroke-width: 1.7; }
.student-list strong { display: block; color: var(--ink); font-size: 1.02rem; margin: 2px 0 3px; }
.chapter-body .lead + p { margin-top: 0; }
@media (max-width: 640px) { .student-work { padding: 28px 18px 20px; } .student-list { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { .student-list li { transition: none; } .student-list li:hover { transform: none; } }

/* P-ONE numbers card: a deep-ocean gradient */
.depth-card { display: grid; gap: 1px; border-radius: 14px; overflow: hidden; background: rgba(255, 255, 255, 0.15); box-shadow: 0 10px 30px rgba(6, 42, 64, 0.25); margin-top: 48px; }
.depth-card div { padding: 18px 24px; color: #fff; text-align: center; }
.depth-card div:nth-child(1) { background: var(--ocean); }
.depth-card div:nth-child(2) { background: var(--ocean-dark); }
.depth-card div:nth-child(3) { background: var(--ocean-deep); }
.depth-card strong { display: block; font-size: 1.9rem; line-height: 1.1; }
.depth-card span { font-size: 0.9rem; color: rgba(255, 255, 255, 0.8); }
/* ATLAS: the same numbers card, in red */
.depth-card-atlas { box-shadow: 0 10px 30px rgba(58, 13, 21, 0.25); }
.depth-card-atlas div:nth-child(1) { background: var(--red); }
.depth-card-atlas div:nth-child(2) { background: var(--red-dark); }
.depth-card-atlas div:nth-child(3) { background: var(--red-deep); }
/* IceCube: the same numbers card and timeline, in purple */
.depth-card-ice { box-shadow: 0 10px 30px rgba(34, 22, 64, 0.25); }
.depth-card-ice div:nth-child(1) { background: var(--ice); }
.depth-card-ice div:nth-child(2) { background: var(--ice-dark); }
.depth-card-ice div:nth-child(3) { background: var(--ice-deep); }
.timeline-ice li.done::before { background: var(--ice); border-color: var(--ice); }
.timeline-ice li.now::before { border-color: var(--ice); box-shadow: 0 0 0 4px rgba(91, 63, 160, 0.2); }
.timeline-ice .when { color: var(--ice); }

@media (max-width: 640px) {
  .chapter-banner { min-height: 360px; }
  .chapter-credit { position: relative; right: auto; bottom: auto; max-width: none; text-align: left; padding: 0 16px 10px; }
  .chapter-banner { flex-direction: column; align-items: stretch; justify-content: flex-end; }
  .chapter-body { padding: 44px 0 52px; }
  .depth-card { margin-top: 8px; }
}

/* Project tags on people cards (red ATLAS, blue P-ONE) */
.people .tags { display: flex; flex-wrap: wrap; gap: 6px; padding: 10px 16px 0; }
.people .tag { font-size: 0.68rem; padding: 2px 9px; }
.people-compact .photo { grid-row: span 4; }
.people-compact .tags { padding: 6px 0 0; }
@media (max-width: 640px) {
  .people:not(.people-compact) .tags { padding: 8px 12px 0; }
}
/* News feed sections tinted by experiment */
.feed-atlas { background: var(--red-soft); border-top: 6px solid var(--red); }
.feed-atlas .feed { --feed: var(--red); }
.feed-pone { background: var(--ocean-soft); border-top: 6px solid var(--ocean); }
.feed-pone .feed { --feed: var(--ocean); }
.feed-ice { background: var(--ice-soft); border-top: 6px solid var(--ice); }
.feed-ice .feed { --feed: var(--ice); }
.button-ice { background: var(--ice); border-color: var(--ice); }
.button-ice:hover { background: var(--ice-dark); border-color: var(--ice-dark); }

/* Third project tag: IceCube (purple) */
.tag-ice { background: var(--ice); }

/* Coloured project dots on theses (red ATLAS, blue P-ONE, grey other) */
.thesis { position: relative; }
.thesis-atlas, .thesis-pone, .thesis-other { padding-left: 42px; }
.thesis-atlas::before, .thesis-pone::before, .thesis-other::before,
.dot { content: ""; display: inline-block; width: 12px; height: 12px; border-radius: 50%; }
.thesis-atlas::before, .thesis-pone::before, .thesis-other::before { position: absolute; left: 18px; top: 22px; }
.thesis-atlas::before, .dot-atlas { background: var(--red); box-shadow: 0 0 0 4px rgba(166, 25, 46, 0.15); }
.thesis-pone::before, .dot-pone { background: var(--ocean); box-shadow: 0 0 0 4px rgba(11, 95, 138, 0.15); }
.thesis-other::before, .dot-other { background: var(--grey); box-shadow: 0 0 0 4px rgba(154, 163, 173, 0.2); }
.thesis-pone:hover { border-color: var(--ocean); }
.thesis-pone a:hover { color: var(--ocean); }
.dot-key { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; margin: 20px 0 24px; color: var(--muted); font-size: 0.9rem; }
.dot-key .dot { margin-left: 8px; }
.dot-key .dot:first-child { margin-left: 0; }

/* ---------- Shared building blocks (used on every page) ---------- */
/* One heading style for every content section */
.section-title { font-size: 2rem; line-height: 1.2; margin: 0 0 20px; letter-spacing: -0.01em; }
.research-section h2:not(.section-title) { font-size: 2rem; }
.home .section-title { margin-top: 56px; }

/* Tags: red = ATLAS (default), blue = P-ONE, purple = IceCube, neutral = anything else */
.tag-neutral { background: var(--ink); }
.section-dark .tag-neutral { background: rgba(255, 255, 255, 0.16); }

/* Project colour hooks for small items (home news cards and panels) */
.news-card-pone { border-left-color: var(--ocean); }
.news-card-pone .more { color: var(--ocean); }
.feature-pone .tag { background: var(--ocean); }
.feature-atlas::after { background: linear-gradient(to top, color-mix(in srgb, var(--red-deep) 92%, transparent) 0%, rgba(10, 14, 20, 0.5) 50%, rgba(10, 14, 20, 0.05) 100%); }
.feature-pone::after { background: linear-gradient(to top, color-mix(in srgb, var(--ocean-deep) 92%, transparent) 0%, rgba(10, 14, 20, 0.5) 50%, rgba(10, 14, 20, 0.05) 100%); }
.feature-atlas { border-bottom: 5px solid var(--red); }
.feature-pone { border-bottom: 5px solid var(--ocean); }
.feature-ice .tag { background: var(--ice); }
.feature-ice::after { background: linear-gradient(to top, color-mix(in srgb, var(--ice-deep) 92%, transparent) 0%, rgba(10, 14, 20, 0.5) 50%, rgba(10, 14, 20, 0.05) 100%); }
.feature-ice { border-bottom: 5px solid var(--ice); }
.hero-credit { position: absolute; z-index: 1; }
@media (max-width: 640px) { .hero-credit { position: relative; right: auto; bottom: auto; max-width: none; text-align: left; padding: 0 16px 10px; } }

/* Home banner illustration (index.html): one drawing linking ATLAS (red, left) and P-ONE (blue, right) */
.hero-art { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
/* The line in the drawing sits at exactly half the banner height. The headline sits just above it and the intro just below,
   so the line runs between them. (.hero-above / .hero-below in index.html.)
   --hero-h is the banner height. */
.home-hero-art { --hero-h: min(84vh, 700px); min-height: var(--hero-h); }
.home-hero-art .home-hero-text { position: absolute; top: 0; bottom: 0; left: 0; right: 0; margin: 0 auto; display: grid; grid-template-rows: 1fr 1fr; padding-top: 0; padding-bottom: 0; }
.home-hero-art .hero-above { align-self: end; padding-bottom: 22px; }
.home-hero-art .hero-below { align-self: start; padding-top: 26px; }
.home-hero-art .hero-above h1 { margin-bottom: 0; }
.home-hero-art h1 { max-width: none; font-size: clamp(2rem, 4.2vw, 3.3rem); margin-bottom: 12px; }
/* Darken only behind the intro, below the line; the line and the top half stay clear */
.home-hero-art::after { background: radial-gradient(ellipse 42% 30% at 50% 64%, rgba(10, 14, 20, 0.8) 0%, rgba(10, 14, 20, 0.4) 60%, rgba(10, 14, 20, 0) 100%); }
.home-hero-art .home-hero-text { text-align: center; }
.home-hero-art h1, .home-hero-art .lead { margin-left: auto; margin-right: auto; }
/* The three places, one per line, each with a dot in its experiment's colour */
.hero-places { list-style: none; margin: 14px 0 0; padding: 0; display: grid; gap: 4px; font-size: 1.15rem; color: #fff; font-weight: 600; }
.hero-places li::before { content: ""; display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 10px; vertical-align: 0.12em; }
.place-atlas::before { background: var(--red-light); }
.place-pone::before { background: var(--ocean-light); }
.place-ice::before { background: var(--ice-light); }
.hero-places a { color: #fff; text-decoration: none; }
.hero-places a:hover { text-decoration: underline; }
.hero-places:has(strong) { font-weight: 400; }
/* Home banner: the list sits in the centre, but its lines are left-aligned so the dots form a column */
.home-hero-art .hero-places { grid-template-columns: minmax(0, max-content); justify-content: center; text-align: left; }
.hero-places strong { font-weight: 700; }
/* Even dimming keeps both halves of the drawing visible; a soft shadow keeps the text readable over it */
.home-hero-art .home-hero-text { text-shadow: 0 2px 18px rgba(10, 14, 20, 0.9), 0 0 4px rgba(10, 14, 20, 0.6); }
.hero-art-lit circle { animation: hero-glow 3.2s ease-in-out infinite alternate; transform-box: fill-box; transform-origin: center; }
.hero-art-lit circle:nth-child(2n) { animation-delay: -1.4s; }
.hero-art-lit circle:nth-child(3n) { animation-delay: -2.3s; }
@keyframes hero-glow { from { opacity: 0.55; } to { opacity: 1; } }
/* On phones, the text is no longer laid over the drawing. The eyebrow, title and lead come first,
   then the whole drawing as a strip with its two labels under it, then the list of experiments.
   display: contents lets the text's wrappers step aside so each line can be ordered on its own. */
@media (max-width: 640px) {
  .home-hero-art { min-height: 0; }
  .home-hero-art::after { display: none; }
  .home-hero-art .home-hero-text, .home-hero-art .hero-above, .home-hero-art .hero-below { display: contents; }
  .home-hero-art .hero-above > *, .home-hero-art .hero-below > * { padding-left: 20px; padding-right: 20px; }
  .home-hero-art .eyebrow { order: 1; padding-top: 28px; }
  .home-hero-art .hero-above h1 { order: 2; margin-bottom: 14px; }
  .home-hero-art .lead { order: 3; margin-bottom: 24px; }
  .hero-art { order: 4; position: relative; height: auto; aspect-ratio: 16 / 7; }
  .home-hero-art .home-hero-labels { order: 5; margin-top: 0; padding-top: 8px; padding-bottom: 0; font-size: 0.75rem; }
  .home-hero-art .hero-places { order: 6; margin-top: 20px; padding-bottom: 44px; }
  .home-hero-art .eyebrow { letter-spacing: 0.06em; font-size: 0.72rem; }
  .hero-places { font-size: 1rem; gap: 8px; }
  /* Wrapped lines start under the text, not under the dot */
  .hero-places li { padding-left: 19px; }
  .hero-places li::before { margin-left: -19px; }
}
@media (prefers-reduced-motion: reduce) { .hero-art-lit circle { animation: none; } }

/* Diagram (e.g. the P-ONE "How it works" drawing on research.html) */
.diagram { margin: 0 0 20px; }
.diagram svg { display: block; width: 100%; height: auto; border-radius: 14px; box-shadow: 0 10px 30px rgba(6, 42, 64, 0.25); }
.diagram figcaption { color: var(--muted); font-size: 0.85rem; font-style: italic; margin-top: 8px; }
/* Diagram beside a single column of steps; stacks on narrow screens */
.how-it-works { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 24px; align-items: start; }
.how-it-works .diagram { margin: 0; }
/* Compact steps beside the diagram, so the two columns come out about the same height */
.how-it-works .steps { grid-template-columns: 1fr; gap: 10px; }
.how-it-works .steps li { padding: 14px 16px 14px 56px; }
.how-it-works .steps li::before { left: 14px; top: 14px; width: 30px; height: 30px; font-size: 0.9rem; }
.how-it-works .steps h4 { margin: 3px 0 4px; }
.how-it-works .steps p { font-size: 0.9rem; line-height: 1.5; }
@media (max-width: 800px) { .how-it-works { grid-template-columns: 1fr; } }

/* Stand-in when there is no photo yet: a blank, neutral profile outline (head, shoulders, lab-coat collar) on the soft card background.
   Drawn as an inline SVG so there is no image file to manage. */
.people .photo.placeholder {
  background-color: var(--bg-soft);
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100' fill='none' stroke='%238a95a1' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='50' cy='38' r='15'/%3E%3Cpath d='M20 90c0-17 13-28 30-28s30 11 30 28'/%3E%3Cpath d='M42 63l8 13 8-13'/%3E%3C/svg%3E"),
    linear-gradient(135deg, var(--red-soft), var(--ocean-soft));
  background-repeat: no-repeat;
  background-position: center 60%, center;
  background-size: 62%, cover;
}
/* Smaller round badges (former members): same outline, bolder lines so it reads at small sizes */
.people-compact .photo.placeholder {
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100' fill='none' stroke='%237a8591' stroke-width='4.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='50' cy='38' r='15'/%3E%3Cpath d='M20 90c0-17 13-28 30-28s30 11 30 28'/%3E%3Cpath d='M42 63l8 13 8-13'/%3E%3C/svg%3E"),
    linear-gradient(135deg, var(--red-soft), var(--ocean-soft));
  background-size: 88%, cover;
  background-position: center 75%, center;
}

/* Icon tiles (any card that starts with an .icon): icon, heading and text centred */
.topic:has(> .icon), .card-link:has(> .icon) { text-align: center; }
.topic > .icon, .card-link > .icon { display: block; margin: 0 auto 10px; width: 40px; height: 40px; }