/* BIL Conference — restored look & feel.
   Palette and type from the original bil-theme (BILconference/bil-theme):
   sky blue #2ea3f2 on white, deep navy #084f7f, slate #323944,
   Hind for headings, Open Sans for body. */

:root {
  --blue: #2ea3f2;
  --blue-light: #59b6f5;
  --navy: #084f7f;
  --slate: #323944;
  --bg: #ffffff;
  --bg-alt: #f8f9fa;
  --ink: #333333;
  --muted: #888888;
  --rule: #e8e8e8;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 17px/1.65 "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

.wrap {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

a { color: var(--blue); }
a:hover { color: var(--navy); }

h1, h2, h3, h4 {
  font-family: "Hind", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-weight: 700;
  line-height: 1.2;
  color: var(--slate);
}
h1 { font-size: 2.3rem; margin: 0 0 1rem; }
h2 { font-size: 1.6rem; margin: 2.25rem 0 0.75rem; }
h3 { font-size: 1.2rem; margin: 1.5rem 0 0.5rem; }
h4 { font-size: 1.02rem; margin: 0 0 0.35rem; }

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

/* ── Navbar: solid BIL blue, bold white links, navy hover ── */
.site-header {
  background: var(--blue);
  padding: 0.6rem 0;
}
.site-header .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.25rem;
}
.site-logo { height: 42px; width: auto; display: block; }
.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem;
  margin-left: auto;
}
.site-nav a {
  color: #fff;
  text-decoration: none;
  font-family: "Hind", sans-serif;
  font-weight: 700;
  font-size: 0.98rem;
  padding: 0.45rem 0.8rem;
  border-radius: 4px;
}
.site-nav a:hover, .site-nav a:focus {
  background: var(--navy);
  color: #fff;
}

main { min-height: 50vh; }
main > .page, main > section { }
.page, .home-section { padding: 0; }
main.wrap { padding: 2.5rem 1.25rem 3rem; }

.inner {
  max-width: 1000px;
  margin: 0 auto;
}

/* ── Home hero: the neuron banner, centered white logo ── */
.hero-banner {
  background: url("../img/banner-brain.jpg") 50% 50% / cover no-repeat var(--slate);
  color: #fff;
  text-align: center;
  padding: 5.5rem 1.25rem 5rem;
}
.hero-banner .bil-logo {
  display: block;
  margin: 0 auto 1.5rem;
  width: min(300px, 60vw);
}
.hero-banner h1 {
  color: #fff;
  font-size: 2rem;
  font-weight: 300;
  font-family: "Hind", sans-serif;
  max-width: 34em;
  margin: 0 auto;
}
.hero-banner .hero-sub {
  font-weight: 300;
  font-size: 1.15rem;
  max-width: 44em;
  margin: 1.25rem auto 0;
  opacity: 0.95;
}

/* ── Intro: white, lots of air ── */
.module-intro {
  padding: 4.5rem 1.25rem;
  text-align: center;
}
.module-intro p {
  font-weight: 300;
  font-size: 1.18rem;
  max-width: 46em;
  margin: 0 auto 1.25rem;
}

/* ── Map band: white dotted world map on BIL blue ── */
.module-map {
  background: url("../img/world_map.png") 50% 50% / contain no-repeat var(--blue);
  color: #fff;
  text-align: center;
  padding: 5.5rem 1.25rem;
}
.module-map h2 {
  color: #fff;
  font-size: 2rem;
  margin: 0 0 2rem;
}
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3.5rem;
  margin: 0;
}
.hero-stats a {
  text-decoration: none;
  color: #fff;
  font-size: 1.05rem;
  font-weight: 300;
}
.hero-stats strong {
  display: block;
  font-family: "Hind", sans-serif;
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1.1;
}
.hero-stats a:hover { color: #fff; text-decoration: underline; }

/* ── Gradient CTA band (the old #module-now) ── */
.module-cta {
  background: linear-gradient(to bottom right, var(--blue), var(--navy));
  color: #fff;
  text-align: center;
  padding: 4rem 1.25rem;
}
.module-cta h2 { color: #fff; margin-top: 0; }
.module-cta p { font-weight: 300; max-width: 40em; margin: 0.75rem auto 1.5rem; }

.btn {
  display: inline-block;
  background: var(--blue);
  color: #fff;
  font-family: "Hind", sans-serif;
  font-weight: 700;
  text-decoration: none;
  padding: 0.55rem 1.4rem;
  border-radius: 4px;
}
.btn:hover { background: var(--navy); color: #fff; }
.module-cta .btn { background: #fff; color: var(--navy); }
.module-cta .btn:hover { background: var(--bg-alt); }

/* ── Events on white ── */
.module-events { padding: 4rem 1.25rem 4.5rem; }
.module-events > h2, .module-events > .year-head { max-width: 1000px; }

/* ── Page hero: slate band, white title (the old jumbotron) ── */
.page-hero {
  background: var(--slate);
  color: #fff;
  padding: 3.25rem 1.25rem;
}
.page-hero .inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  gap: 1.75rem;
  align-items: center;
}
.page-hero h1 { color: #fff; margin: 0 0 0.35rem; }
.page-hero .event-meta { color: var(--blue-light); font-weight: 700; margin: 0 0 0.3rem; }
.page-hero .event-venue { color: #cfd3d9; margin: 0 0 0.4rem; white-space: pre-line; font-size: 0.95rem; }
.page-hero .event-links { display: flex; gap: 1rem; margin: 0.35rem 0 0; }
.page-hero .event-links a { color: #fff; text-decoration: underline; }
.page-hero .event-links a:hover { color: var(--blue-light); }
.page-hero .profile-role { color: var(--blue-light); font-style: italic; margin: 0 0 0.3rem; }
.page-hero .profile-note { color: #cfd3d9; font-size: 0.92rem; margin: 0; }
.event-logo {
  max-width: 170px;
  max-height: 120px;
  object-fit: contain;
  flex-shrink: 0;
  background: #fff;
  border-radius: 6px;
  padding: 0.5rem;
}
.profile-photo { width: 150px; height: 150px; object-fit: cover; border-radius: 6px; flex-shrink: 0; }

.page-body {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2.25rem 1.25rem 3rem;
}

/* ── Cards ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(215px, 1fr));
  gap: 1rem;
  margin: 1rem 0 1.75rem;
}
.card, .card-link {
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 1rem 1.1rem;
  text-decoration: none;
  color: var(--ink);
}
.card-link:hover { border-color: var(--blue); box-shadow: 0 2px 10px rgba(46, 163, 242, 0.18); }
.card p { margin: 0; color: var(--muted); font-size: 0.9rem; }
.card-logo {
  max-height: 56px;
  width: auto;
  max-width: 100%;
  margin-bottom: 0.6rem;
  object-fit: contain;
}
.year-head {
  border-bottom: 3px solid var(--blue);
  padding-bottom: 0.3rem;
}

/* ── People ── */
.people-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(132px, 1fr));
  gap: 1.15rem;
  margin: 1.25rem 0 1.5rem;
}
.person {
  text-decoration: none;
  color: var(--ink);
  text-align: center;
  font-size: 0.92rem;
  line-height: 1.3;
}
.person img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 6px;
  margin-bottom: 0.45rem;
  background: var(--bg-alt);
}
.person:hover span { color: var(--blue); }
.person span { display: block; font-weight: 700; font-family: "Hind", sans-serif; }
.person small { color: var(--muted); font-weight: 400; }

/* ── Talks, badges ── */
.talk-list { list-style: none; padding: 0; }
.talk-list li { padding: 0.45rem 0; border-bottom: 1px solid var(--rule); }
.talk-speaker { color: var(--muted); }
.badge {
  background: var(--blue);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  border-radius: 999px;
  padding: 0.12rem 0.55rem;
  margin-left: 0.4rem;
  white-space: nowrap;
}

.organizer-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
}
.organizer-list li { display: flex; align-items: center; gap: 0.6rem; }
.organizer-list img { width: 44px; height: 44px; object-fit: cover; border-radius: 50%; }
.organizer-list small { color: var(--muted); display: block; }

.sponsor-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  align-items: center;
}
.sponsor img { max-height: 60px; max-width: 160px; object-fit: contain; }
.sponsor-name { color: var(--muted); font-weight: 700; }

.event-section { margin-top: 2.25rem; }

/* ── Talk video ── */
.video-embed {
  position: relative;
  aspect-ratio: 16 / 9;
  margin: 1.25rem 0;
}
.video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: 6px;
}
.tag-row { display: flex; flex-wrap: wrap; gap: 0.4rem; padding: 0; }
.tag {
  background: var(--bg-alt);
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-size: 0.8rem;
  padding: 0.1rem 0.7rem;
}

/* ── Archive banner ── */
.archive-banner {
  background: var(--bg-alt);
  border: 1px solid var(--rule);
  border-left: 4px solid var(--blue);
  border-radius: 4px;
  padding: 0.5rem 0.9rem;
  font-size: 0.88rem;
  color: var(--muted);
}

/* ── Content ── */
.page table, .page-body table { border-collapse: collapse; margin: 1rem 0; width: 100%; }
.page th, .page td, .page-body th, .page-body td {
  border: 1px solid var(--rule);
  padding: 0.45rem 0.75rem;
  text-align: left;
}
.page blockquote, .page-body blockquote {
  border-left: 3px solid var(--blue);
  margin: 1rem 0;
  padding: 0.25rem 0 0.25rem 1rem;
  color: var(--muted);
}
hr { border: none; border-top: 1px solid var(--rule); margin: 2rem 0; }
.backlink { margin-top: 2.5rem; }

/* ── Footer: slate with the thick blue top border ── */
.site-footer {
  background: var(--slate);
  border-top: 14px solid var(--blue);
  color: #fff;
  padding: 2.25rem 0 2.5rem;
  font-size: 0.92rem;
}
.site-footer p { margin: 0.3rem 0; font-weight: 300; }
.site-footer strong { font-family: "Hind", sans-serif; color: var(--blue-light); }
.site-footer a { color: var(--blue-light); }
.archive-note { font-size: 0.8rem; opacity: 0.8; }

@media (max-width: 600px) {
  .page-hero .inner { flex-direction: column; align-items: flex-start; }
  .hero-banner h1 { font-size: 1.5rem; }
  .hero-stats { gap: 1.75rem; }
  .hero-stats strong { font-size: 2rem; }
  .module-map { background-size: cover; }
}

/* ── Flags (sprite offsets in flags.css, from the original theme) ── */
.f32 { display: inline-block; vertical-align: middle; }
.f32 .flag { border-radius: 3px; }

/* ── Footer CC badge ── */
.footer-cols {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.cc-badge img { width: 120px; opacity: 0.85; }
.cc-badge:hover img { opacity: 1; }

/* ── Click-to-play YouTube links (yt-embed.js) ── */
.yt-lite {
  position: relative;
  aspect-ratio: 16 / 9;
  max-width: 640px;
  margin: 1rem 0;
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  background: #000;
}
.yt-lite img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.85;
}
.yt-lite:hover img, .yt-lite:focus img { opacity: 1; }
.yt-lite-title {
  position: absolute;
  top: 0; left: 0; right: 0;
  padding: 0.5rem 0.9rem;
  color: #fff;
  font-family: "Hind", sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  background: linear-gradient(rgba(0,0,0,0.7), transparent);
}
.yt-lite-play {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 64px; height: 44px;
  background: var(--blue);
  border-radius: 10px;
}
.yt-lite-play::before {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-40%, -50%);
  border-style: solid;
  border-width: 10px 0 10px 17px;
  border-color: transparent transparent transparent #fff;
}
.yt-lite:hover .yt-lite-play { background: var(--navy); }
li .yt-lite { margin: 0.5rem 0 1rem; }

/* ── Video hub ── */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1rem 0 1.75rem;
}
.video-card {
  text-decoration: none;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 6px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.video-card:hover { border-color: var(--blue); box-shadow: 0 2px 10px rgba(46, 163, 242, 0.18); }
.video-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.video-card-title {
  font-family: "Hind", sans-serif;
  font-weight: 700;
  font-size: 0.92rem;
  line-height: 1.3;
  padding: 0.55rem 0.75rem 0.1rem;
}
.video-card small { color: var(--muted); padding: 0 0.75rem 0.6rem; }