/* ==========================================================================
   HERO — Site Design System
   Hand-written stylesheet replacing the old HTML5UP "Spectral" template.
   ========================================================================== */

:root {
  /* Palette */
  --navy-950: #071a30;
  --navy-900: #0b2545;
  --navy-800: #123a63;
  --navy-700: #1c4d7d;
  --navy-600: #2b628f;
  --navy-100: #e9eff6;
  --navy-50:  #f3f6fa;

  --red-700: #a91d2b;
  --red-600: #c8202f;
  --red-500: #d9313f;
  --red-100: #fbe7e8;

  --ink: #101828;
  --ink-soft: #3a4658;
  --muted: #667085;
  --line: #e3e8ef;
  --paper: #ffffff;
  --bg: #f8f9fb;

  /* Scale */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .06);
  --shadow-md: 0 12px 28px -12px rgba(11, 37, 69, .22);
  --shadow-lg: 0 30px 60px -24px rgba(11, 37, 69, .35);

  --container: 1180px;
  --header-h: 76px;

  /* Johns Hopkins brand system defaults: Georgia / Tahoma, until Hopkins Slab
     web-font hosting is available. */
  --font-heading: Georgia, 'Times New Roman', serif;
  --font-body: Tahoma, 'Segoe UI', Verdana, Arial, sans-serif;
}

/* ---------- Reset / base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

/* Large monitors: scale type and the content column up so the site doesn't
   look tiny in a narrow strip. rem-based sizes follow the root font size. */
@media (min-width: 1800px) {
  html { font-size: 112.5%; }
  :root { --container: 1320px; --header-h: 84px; }
}
@media (min-width: 2200px) {
  html { font-size: 125%; }
  :root { --container: 1480px; --header-h: 92px; }
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  padding-top: var(--header-h);
  transition: padding-top .25s ease;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

/* ---------- Scroll reveal ---------- */
/* Uses the independent `translate` property (not `transform`) so it never
   collides with components that already transition `transform` on hover
   (.card, .doc-tile) — those add their own opacity/translate transition below. */
.reveal {
  opacity: 0;
  translate: 0 18px;
  transition: opacity .6s ease, translate .6s ease;
}
.reveal.is-visible { opacity: 1; translate: 0 0; }

.card-grid > .reveal:nth-child(2), .bio-grid > .reveal:nth-child(2) { transition-delay: .08s; }
.card-grid > .reveal:nth-child(3), .bio-grid > .reveal:nth-child(3) { transition-delay: .16s; }
.card-grid > .reveal:nth-child(4) { transition-delay: .24s; }

@media (prefers-reduced-motion: reduce) {
  .reveal, html.is-scrolled { transition: none !important; }
}

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

a { color: var(--navy-800); text-decoration: none; }
a:hover { color: var(--navy-600); }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--navy-900);
  line-height: 1.15;
  margin: 0 0 .5em;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h2 { font-size: clamp(1.6rem, 1.3rem + 1.2vw, 2.25rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.05rem; }

p { margin: 0 0 1em; color: var(--ink-soft); }

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

section.section { padding-block: clamp(3rem, 5vw, 5rem); }
section.section.tight { padding-block: clamp(2rem, 3vw, 3rem); }
section.section.alt { background: var(--navy-50); }
section.section.navy { background: var(--navy-900); color: #fff; }
section.section.navy h2, section.section.navy h3 { color: #fff; }
section.section.navy p { color: rgba(255, 255, 255, .78); }

.eyebrow {
  display: inline-block;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--red-600);
  margin-bottom: .6em;
}

.section-head { max-width: 720px; margin: 0 0 2.5rem; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head p { font-size: 1.05rem; }

/* ---------- Stats ---------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-top: 3rem;
  text-align: center;
}
.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: clamp(2rem, 1.4rem + 1.8vw, 3.1rem);
  white-space: nowrap;
  line-height: 1;
  color: var(--red-600);
  font-variant-numeric: tabular-nums;
}
.stat-label {
  margin: .6em 0 0;
  font-weight: 600;
  font-size: .92rem;
  color: var(--muted);
}

@media (max-width: 700px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 2rem 1rem; }
}

/* ---------- Header / Nav ---------- */
html.is-scrolled { --header-h: 56px; }
@media (min-width: 1800px) { html.is-scrolled { --header-h: 62px; } }
@media (min-width: 2200px) { html.is-scrolled { --header-h: 68px; } }

.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  height: var(--header-h);
  z-index: 1000;
  background: rgba(11, 37, 69, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, .06);
  transition: height .2s ease, background-color .2s ease, box-shadow .2s ease;
}
html.is-scrolled .site-header {
  background: rgba(9, 30, 56, .97);
  box-shadow: var(--shadow-sm);
}

.site-header .container {
  max-width: calc(var(--container) + 24rem);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: .65rem;
  color: #fff;
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
  white-space: nowrap;
  flex: none;
}
.brand .brand-full,
.brand .brand-short {
  overflow: hidden;
  text-overflow: ellipsis;
}
.brand:hover { color: #fff; opacity: .9; }
.brand .mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(145deg, var(--red-600), var(--red-700));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1rem;
  flex: none;
  transition: width .2s ease, height .2s ease, font-size .2s ease;
}
html.is-scrolled .brand .mark {
  width: 26px;
  height: 26px;
  font-size: .8rem;
}
html.is-scrolled .brand { font-size: .92rem; }
.brand { transition: font-size .2s ease; }
.brand .brand-short { display: none; }

@media (max-width: 1499px) and (min-width: 1200px) {
  .brand .brand-full { display: none; }
  .brand .brand-short { display: inline; }
}
@media (max-width: 560px) {
  .brand .brand-full { display: none; }
  .brand .brand-short { display: inline; }
}

.site-nav ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1.15rem;
  margin: 0;
  padding: 0;
}

.site-nav a {
  color: rgba(255, 255, 255, .82);
  font-weight: 500;
  font-size: .86rem;
  white-space: nowrap;
}
.site-nav a:hover, .site-nav a.is-active { color: #fff; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: var(--radius-sm);
}
.nav-toggle:hover { background: rgba(255, 255, 255, .08); }
.nav-toggle svg { width: 22px; height: 22px; }

@media (max-width: 1199px) {
  .nav-toggle { display: flex; }
  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--navy-900);
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
  }
  .site-nav.is-open { max-height: 80vh; overflow-y: auto; }
  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: .5rem 0 1rem;
  }
  .site-nav li { border-top: 1px solid rgba(255, 255, 255, .06); }
  .site-nav a { display: block; padding: .9rem clamp(1.25rem, 4vw, 2.5rem); }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  padding: .85em 1.6em;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: .95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background-color .15s ease, color .15s ease;
  line-height: 1.2;
}
.btn:hover { transform: translateY(-1px); }

.btn-primary { background: var(--navy-900); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--navy-800); color: #fff; box-shadow: var(--shadow-md); }

.btn-emergency { background: var(--red-600); color: #fff; box-shadow: 0 10px 24px -10px rgba(200, 32, 47, .55); }
.btn-emergency:hover { background: var(--red-700); color: #fff; }

.btn-outline { background: transparent; color: var(--navy-900); border-color: var(--line); }
.btn-outline:hover { border-color: var(--navy-800); color: var(--navy-900); }

.btn-outline-light { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .35); }
.btn-outline-light:hover { border-color: #fff; color: #fff; }

.btn-sm { padding: .6em 1.2em; font-size: .85rem; }

.btn-group { display: flex; flex-wrap: wrap; gap: .9rem; }
.btn-group.center { justify-content: center; }

/* ---------- Hero (page banners) ---------- */
.hero {
  position: relative;
  background: linear-gradient(155deg, var(--navy-950), var(--navy-800));
  color: #fff;
  padding-block: clamp(4.5rem, 10vw, 7.5rem) clamp(3.5rem, 8vw, 6rem);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 60% at 85% 0%, rgba(217, 49, 63, .25), transparent 60%),
    radial-gradient(50% 50% at 0% 100%, rgba(43, 98, 143, .35), transparent 60%);
}
.hero .container { position: relative; text-align: center; }
.hero h1 {
  color: #fff;
  font-size: clamp(2.1rem, 1.6rem + 2.4vw, 3.4rem);
  max-width: 18ch;
  margin-inline: auto;
  margin-bottom: .4em;
}
.hero .hero-title { max-width: none; }
.hero .hero-title .title-line { display: block; white-space: nowrap; }
@media (max-width: 600px) {
  .hero .hero-title { max-width: min-content; }
  .hero .hero-title .title-line { display: inline; white-space: normal; }
}
.hero .lede {
  color: rgba(255, 255, 255, .82);
  font-size: clamp(1rem, .9rem + .4vw, 1.2rem);
  max-width: 56ch;
  margin-inline: auto;
  margin-bottom: 1.8em;
}
.hero .btn-group { justify-content: center; }
@media (max-width: 600px) {
  .hero .container { text-align: left; }
  .hero h1, .hero .lede { margin-inline: 0; }
  .hero .btn-group { justify-content: flex-start; }
}
.hero.hero-compact { padding-block: clamp(3.5rem, 7vw, 5.5rem) clamp(2.5rem, 5vw, 4rem); }
.hero.hero-compact h1 { font-size: clamp(1.9rem, 1.6rem + 1.4vw, 2.6rem); }

.hero-photo {
  position: relative;
  z-index: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 16/10;
}
.hero-photo img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- Cards / grids ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.75rem;
}
.card-grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.card-grid.cols-4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow .2s ease, transform .2s ease, opacity .6s ease, translate .6s ease;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

.card .card-media { aspect-ratio: 4/3; overflow: hidden; position: relative; }
.card .card-media img { width: 100%; height: 100%; object-fit: cover; }
.card .card-body { padding: 1.5rem; }
.card .card-body h3 { margin-bottom: .4em; }
.card .card-body p:last-child { margin-bottom: 0; }

/* Spotlight cards (index.html) */
.spotlight-card .card-body .btn { margin-top: .5rem; }

/* Bio card (board of directors / coordinators) */
.bio-card {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 0;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.bio-card .bio-photo { aspect-ratio: 3/4; overflow: hidden; background: var(--navy-50); }
.bio-card .bio-photo img { width: 100%; height: 100%; object-fit: cover; }
.bio-card .bio-body { padding: 1.6rem 1.8rem; }
.bio-card .bio-role { font-size: .78rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--red-600); margin-bottom: .3em; }
.bio-card .bio-name { margin: 0 0 .6em; font-size: 1.3rem; }
.bio-card .bio-email {
  display: inline-flex; align-items: center; gap: .4em;
  font-size: .82rem; font-weight: 600; color: var(--navy-700);
  margin-bottom: .9em;
}
.bio-card .bio-email:hover { color: var(--red-600); }
.bio-card p { font-size: .95rem; margin-bottom: 0; }

@media (max-width: 640px) {
  .bio-card { grid-template-columns: 1fr; }
  .bio-card .bio-photo { aspect-ratio: 16/10; }
}

.bio-grid { display: grid; gap: 1.75rem; }

/* Person card (members grids — photo + name + program, no bio) */
.person-card { text-align: center; }
.person-card .person-photo {
  aspect-ratio: 3/4;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: .8rem;
  background: var(--navy-50);
  box-shadow: var(--shadow-sm);
}
.person-card .person-photo img { width: 100%; height: 100%; object-fit: cover; }
.person-card h4 { margin-bottom: .2em; font-size: 1rem; }
.person-card .person-sub { font-size: .85rem; color: var(--muted); margin: 0; }

/* Team card (oversight.html) */
.team-card { text-align: center; padding: 2rem 1.5rem; }
.team-card .person-photo {
  aspect-ratio: 3/4;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 0 auto 1.1rem;
  max-width: 190px;
  background: var(--navy-50);
  box-shadow: var(--shadow-sm);
}
.team-card .person-photo img { width: 100%; height: 100%; object-fit: cover; }
.team-card h3 { font-size: .78rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--red-600); margin-bottom: .7em; }
.team-card p { color: var(--ink); font-weight: 600; margin-bottom: 0; }

/* ---------- Callouts ---------- */
.callout {
  background: var(--navy-50);
  border: 1px solid var(--navy-100);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 4vw, 3rem);
  text-align: center;
}
.callout.callout-navy {
  background: linear-gradient(155deg, var(--navy-950), var(--navy-800));
  color: #fff;
  border: none;
}
.callout.callout-navy h2 { color: #fff; }
.callout.callout-navy p { color: rgba(255, 255, 255, .82); }
.callout p:last-of-type { margin-bottom: 0; }
.callout .callout-inner { max-width: 760px; margin-inline: auto; }

/* Split content block (image + text, e.g. contact.html) */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
}
.split .split-media { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); aspect-ratio: 4/3; }
.split .split-media img { width: 100%; height: 100%; object-fit: cover; }
.split .split-body p:last-of-type { margin-bottom: 1.4em; }
@media (max-width: 760px) {
  .split { grid-template-columns: 1fr; }
}

/* ---------- Document list (resources.html) ---------- */
.doc-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .75rem; }
.doc-tile {
  display: flex;
  align-items: center;
  gap: .9rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .2s ease, border-color .2s ease, opacity .6s ease, translate .6s ease;
}
.doc-tile:hover { box-shadow: var(--shadow-md); border-color: var(--navy-100); }
.doc-tile .doc-icon {
  flex: none;
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  background: var(--navy-100);
  color: var(--navy-800);
  display: flex; align-items: center; justify-content: center;
}
.doc-tile a { color: var(--ink); font-weight: 600; font-size: .96rem; }
.doc-tile a:hover { color: var(--navy-700); }

/* ---------- Tabs (anchor-jump sub nav) ---------- */
.tab-nav {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  justify-content: center;
  margin-bottom: 2.5rem;
}
.tab-nav a {
  padding: .55em 1.2em;
  border-radius: var(--radius-pill);
  background: var(--navy-50);
  border: 1px solid var(--navy-100);
  color: var(--navy-800);
  font-size: .88rem;
  font-weight: 600;
}
.tab-nav a:hover { background: var(--navy-100); }

/* ---------- Tables ---------- */
.table-clean-wrapper { overflow-x: auto; border-radius: var(--radius-md); border: 1px solid var(--line); }
table.table-clean { width: 100%; border-collapse: collapse; background: var(--paper); }
table.table-clean td, table.table-clean th {
  padding: .7em 1em;
  text-align: left;
  border-bottom: 1px solid var(--line);
  font-size: .92rem;
  color: var(--ink-soft);
}
table.table-clean tr:last-child td { border-bottom: none; }
table.table-clean tr:nth-child(even) { background: var(--navy-50); }

.name-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: .5rem .75rem;
}
.name-grid span {
  display: block;
  padding: .5em .1em;
  border-bottom: 1px dashed var(--line);
  font-size: .92rem;
  color: var(--ink-soft);
}

.class-group { margin-bottom: 2.2rem; }
.class-group h4 {
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--navy-700);
  margin-bottom: .8em;
  padding-bottom: .5em;
  border-bottom: 1px solid var(--line);
}

/* ---------- Photo tint (event / action photography) ---------- */
.tint-photo { position: relative; overflow: hidden; }
.tint-photo img { filter: saturate(.85) contrast(1.05); }
.tint-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(11, 37, 69, .5), rgba(11, 37, 69, .12) 60%, rgba(11, 37, 69, .35));
  mix-blend-mode: multiply;
  pointer-events: none;
}
.hero-photo.tint-photo::after { mix-blend-mode: multiply; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy-950);
  color: rgba(255, 255, 255, .75);
  padding-block: 3rem 2.2rem;
  text-align: center;
}
.site-footer .footer-seal { width: 88px; height: auto; margin: 0 auto 1.4rem; opacity: .92; }
.site-footer .foot-icons {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin: 0 0 1.6rem;
  padding: 0;
}
.site-footer .foot-icons a {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, .08);
  color: #fff;
}
.site-footer .foot-icons a:hover { background: var(--red-600); color: #fff; }
.site-footer .copyright {
  list-style: none; margin: 0; padding: 0;
  display: flex; justify-content: center; gap: .5rem;
  font-size: .82rem; color: rgba(255, 255, 255, .5);
  flex-wrap: wrap;
}
.site-footer .copyright a { color: rgba(255, 255, 255, .65); }
.site-footer .copyright li + li::before { content: "•"; margin-right: .5rem; }

/* ---------- Utilities ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.icon-inline { width: 1em; height: 1em; display: inline-block; vertical-align: -0.125em; }

/* ---------- Carousel (updates.html) ---------- */
.carousel {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--navy-950);
}
.carousel-track {
  display: flex;
  scroll-snap-type: x mandatory;
  overflow-x: auto;
  scrollbar-width: none;
}
.carousel-track::-webkit-scrollbar { display: none; }
.carousel-slide {
  flex: 0 0 100%;
  scroll-snap-align: start;
  position: relative;
  aspect-ratio: 16/9;
}
.carousel-slide img { width: 100%; height: 100%; object-fit: cover; }
.carousel-slide::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(7, 26, 48, .78), rgba(7, 26, 48, 0) 55%);
}
.carousel-caption {
  position: absolute;
  left: 0; right: 0;
  bottom: .7rem;
  z-index: 2;
  color: #fff;
  font-family: var(--font-body);
  font-size: clamp(.72rem, .65rem + .3vw, .9rem);
  font-weight: 600;
  letter-spacing: .05em;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 0;
  padding-inline: 5.5rem;
}
.carousel-controls {
  position: absolute;
  inset-inline: 0;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  justify-content: space-between;
  padding-inline: 1rem;
  pointer-events: none;
}
.carousel-btn {
  pointer-events: auto;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: none;
  background: rgba(7, 26, 48, .55);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  backdrop-filter: blur(4px);
}
.carousel-btn:hover { background: rgba(200, 32, 47, .85); }
.carousel-dots {
  position: absolute;
  bottom: .85rem;
  right: 1rem;
  display: flex;
  gap: .5rem;
  z-index: 2;
}
.carousel-dots button {
  width: 9px; height: 9px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, .4);
  cursor: pointer;
  padding: 0;
}
.carousel-dots button.is-active { background: #fff; width: 22px; border-radius: 5px; }

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: none;
  background: var(--navy-900);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  z-index: 900;
  opacity: 0;
  translate: 0 12px;
  pointer-events: none;
  transition: opacity .2s ease, translate .2s ease, background-color .2s ease;
}
.back-to-top.is-visible { opacity: 1; translate: 0 0; pointer-events: auto; }
.back-to-top:hover { background: var(--red-600); }
.back-to-top svg { width: 20px; height: 20px; }

/* ---------- Countdown ---------- */
.countdown {
  display: flex;
  gap: 1.25rem;
  justify-content: center;
  margin: 2rem 0;
  flex-wrap: wrap;
}
.countdown .unit { text-align: center; min-width: 72px; }
.countdown .unit .num {
  display: block;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: clamp(1.8rem, 1.5rem + 1vw, 2.4rem);
  color: var(--navy-900);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.countdown .unit .lbl {
  display: block;
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: .4em;
}
.countdown.is-past { display: none; }

/* ---------- Scrollspy tab nav ---------- */
.tab-nav a.is-active {
  background: var(--navy-900);
  border-color: var(--navy-900);
  color: #fff;
}

/* ---------- Responsive tweaks ---------- */
@media (max-width: 760px) {
  .bio-card .bio-body { padding: 1.4rem; }
  .card-grid.cols-4 { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
}