/* The main portfolio has its own dark identity; product sites stay independent. */
html.portfolio-dark {
  color-scheme: dark;
  --bg: #0e121b;
  --bg-elevated: #171e2b;
  --bg-ink: #0a0e16;
  --bg-soft: #111722;
  --text: #edf0f6;
  --text-muted: #afb8ca;
  --text-inverse: #eef2fa;
  --line: rgba(176, 194, 222, .15);
  --line-inverse: rgba(176, 194, 222, .22);
  --blue: #8fc9ff;
  --green: #83cbb8;
  --gold: #a5b7d3;
  --red: #f7a0af;
  --purple: #c3adfa;
  --shadow-sm: 0 12px 32px #0002;
  --shadow-lg: 0 28px 80px #0006;
  --nav-height: 74px;
  --radius-md: 20px;
  --radius-lg: 26px;
}
.portfolio-dark .site-header {
  background: rgba(12, 17, 26, .9);
  border-bottom: 1px solid var(--line);
}
.portfolio-dark .nav__mark {
  width: 34px;
  height: 34px;
  background: linear-gradient(145deg, #283347, #151c29);
  border: 1px solid #a9bfde38;
  color: #e5ecf8;
}
.portfolio-dark .nav__name { letter-spacing: -.025em; font-size: 1rem; }
.portfolio-dark .nav__link { font-size: .84rem; font-weight: 550; }
.portfolio-dark .nav__link:hover { background: #a9bfde12; color: #f4f7ff; }
.portfolio-dark .nav__link[aria-current] { color: #e8f0ff; background: #a9bfde12; }
.portfolio-dark .hero {
  padding-top: calc(var(--nav-height) + 68px);
  padding-bottom: 78px;
  background: radial-gradient(ellipse at 82% 48%, #213a6138, transparent 58%),
    radial-gradient(ellipse at 0 5%, #42365e1f, transparent 48%), var(--bg-ink);
  border-bottom: 1px solid var(--line);
}
.portfolio-dark .hero__inner { gap: clamp(35px, 5vw, 76px); }
.portfolio-dark .hero h1 {
  font-size: clamp(3.1rem, 5.7vw, 4.8rem);
  letter-spacing: -.045em;
  line-height: 1.05;
  font-weight: 720;
  text-wrap: balance;
}
.portfolio-dark .hero h1 span { color: #aabbd6; }
.portfolio-dark .hero__summary { color: #b5bfd1; line-height: 1.65; font-size: 1.15rem; }
.portfolio-dark .hero__actions { gap: 14px; margin-top: 34px; }
.portfolio-dark .eyebrow { font-size: .66rem; letter-spacing: .17em; font-weight: 650; }
.portfolio-dark .hero__showcase::after {
  content: "";
  position: absolute;
  width: 85%;
  height: 60%;
  border-radius: 50%;
  background: radial-gradient(ellipse, #486dad25, transparent 70%);
  pointer-events: none;
}
.portfolio-dark .button { font-size: .86rem; font-weight: 650; min-height: 48px; padding-inline: 23px; }
.portfolio-dark .button--primary { background: #dbe7f7; color: #111927; }
.portfolio-dark .button--secondary { background: #dbe7f704; color: #ccd5e6; }
.portfolio-dark .button--dark { background: #2075c2; color: #fff; }
.portfolio-dark .button:hover { opacity: 1; filter: brightness(1.1); }
.portfolio-dark .featured-app { padding-block: clamp(72px, 8vw, 118px); background: var(--bg); }
.portfolio-dark .featured-app__media { border: 1px solid #71b6ef30; box-shadow: 0 25px 60px #0004; }
.portfolio-dark .featured-app .eyebrow { color: var(--blue); }
.portfolio-dark .feature-list { font-weight: 500; gap: 15px; }
.portfolio-dark .feature-list li::before { width: 6px; height: 6px; background: #7ac3ff; }
.portfolio-dark .lead { line-height: 1.65; font-size: 1.15rem; }
.portfolio-dark .section-heading h2,
.portfolio-dark .featured-app h2,
.portfolio-dark .page-hero h1 { letter-spacing: -.035em; font-weight: 700; text-wrap: balance; }
.portfolio-dark .section-heading h2 { font-size: clamp(2.3rem, 4.4vw, 3.7rem); }
.portfolio-dark .section-heading__summary { line-height: 1.65; font-size: 1.05rem; margin-top: 24px; }
.portfolio-dark .app-index { padding-block: clamp(74px, 8vw, 110px); border-block: 1px solid var(--line); }
.portfolio-dark .app-grid { gap: 24px; }
.portfolio-dark .app-card { background: linear-gradient(145deg, #1b2332, #141b27); }
.portfolio-dark .app-card--teachin { border-color: #b495f13b; }
.portfolio-dark .app-card--fox { border-color: #ed718138; }
.portfolio-dark .app-card__body { padding: 27px; gap: 15px; }
.portfolio-dark .app-card h3 { letter-spacing: -.025em; font-weight: 650; }
.portfolio-dark .app-card__body > p:not(.app-card__category) { font-size: .94rem; line-height: 1.75; }
.portfolio-dark .app-card .app-card__category { font-size: .64rem; letter-spacing: .12em; font-weight: 650; }
.portfolio-dark .app-card--teachin .app-card__category,
.portfolio-dark .app-card--teachin .app-card__links a { color: var(--purple); }
.portfolio-dark .app-card--fox .app-card__category,
.portfolio-dark .app-card--fox .app-card__links a { color: var(--red); }
.portfolio-dark .app-card__links { padding-top: 18px; gap: 12px 18px; font-size: .84rem; }
.portfolio-dark .app-card__links a { font-weight: 600; }
.portfolio-dark .app-card--future { background: radial-gradient(ellipse at 0 0, #34507525, transparent 75%), #131a26; }
.portfolio-dark .future-mark { color: #a4b6d1; border-color: #adc3e32a; background: #adc3e305; font-weight: 300; }
.portfolio-dark .approach { padding-block: clamp(76px, 8vw, 112px); }
.portfolio-dark .approach__grid { gap: 25px; }
.portfolio-dark .approach__grid article { padding-top: 25px; border-color: #99aac733; }
.portfolio-dark .approach__grid h3 { font-size: 1.1rem; letter-spacing: -.02em; }
.portfolio-dark .approach__grid p { font-size: .94rem; line-height: 1.75; }
.portfolio-dark .site-footer { padding-block: 35px; border-top: 1px solid var(--line); color: #97a6bc; }
.portfolio-dark .site-footer__inner { font-size: .78rem; }
.portfolio-dark .site-footer__links { gap: 22px; }
.portfolio-dark .site-footer__links a { color: #bcc8dc; font-weight: 500; }
.portfolio-dark .page-hero { background: radial-gradient(ellipse at 85% 10%, #243b5e42, transparent 65%), var(--bg-ink); border-bottom: 1px solid var(--line); }
.portfolio-dark .page-hero p { color: #b3bfd3; line-height: 1.65; }
.portfolio-dark .page-section { min-height: 44vh; }
.portfolio-dark .resource-grid { gap: 24px; }
.portfolio-dark .resource-card,
.portfolio-dark .policy-card { background: linear-gradient(145deg, #192231, #121a27); padding: 32px; }
.portfolio-dark .resource-card p,
.portfolio-dark .policy-card p,
.portfolio-dark .policy-card li { line-height: 1.75; }
.portfolio-dark .resource-card__links a,
.portfolio-dark .resource-list a { font-weight: 600; }
.portfolio-dark .resource-card:nth-child(1) { border-color: #7dbbf23b; }
.portfolio-dark .resource-card:nth-child(2) { border-color: #b495f13b; }
.portfolio-dark .resource-card:nth-child(2) a { color: var(--purple); }
.portfolio-dark .resource-card:nth-child(3) { border-color: #ed718138; }
.portfolio-dark .resource-card:nth-child(3) a { color: var(--red); }
.portfolio-dark .skip-link { background: #c5daf7; color: #111927; }
.portfolio-dark #apps-heading { scroll-margin-top: calc(var(--nav-height) + 30px); }
@media (max-width: 980px) {
  .portfolio-dark .hero__copy { max-width: 660px; }
  .portfolio-dark .hero h1 { max-width: 600px; }
  .portfolio-dark .hero { padding-bottom: 65px; }
}
@media (max-width: 760px) {
  .portfolio-dark { --nav-height: 66px; }
  .portfolio-dark .nav__menu { background: #111925fa; }
  .portfolio-dark .hero { padding-top: calc(var(--nav-height) + 44px); }
  .portfolio-dark .hero h1 { font-size: clamp(2.8rem, 10.5vw, 4.25rem); }
  .portfolio-dark .hero__summary { font-size: 1.05rem; }
  .portfolio-dark .app-card__body { padding: 25px; }
  .portfolio-dark .resource-card,
  .portfolio-dark .policy-card { padding: 25px; }
  .portfolio-dark .featured-app__layout { gap: 35px; }
}

/* Match the adjacent app card; keep the icon, headline and poster separate. */
.fox-card-art { background: radial-gradient(ellipse at 85% 100%, #7d1830 0%, transparent 65%), #0d090d; }
.fox-card-art::before { border-color: #ff758460; box-shadow: 0 0 22px #ff405b25; }
.fox-card-art .teachin-card-art__headline > span { color: #ff8c9c; }
.fox-card-art .teachin-card-art__poster { border-color: #ff758430; }
.fox-card-art:focus-visible { outline-color: #ff8c9c; }
@media (prefers-reduced-motion: reduce) { .fox-card-art .teachin-card-art__poster { transition: none; } }

/* Each featured app gets a full panel; artwork retains its own proportions. */
.featured-showcase { padding-block: clamp(56px, 7vw, 96px); scroll-margin-top: var(--nav-height); }
.featured-showcase__heading { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.featured-showcase__heading h2 { font-size: clamp(1.8rem, 3vw, 2.65rem); letter-spacing: -.035em; margin-top: 12px; }
.featured-showcase__arrows { display: flex; gap: 10px; }
.featured-showcase__arrows button { width: 46px; height: 46px; border: 1px solid var(--line-inverse); border-radius: 50%; background: #ffffff06; color: var(--text); font-size: 1.35rem; cursor: pointer; }
.featured-showcase__arrows button:disabled { opacity: .3; cursor: default; }
.featured-showcase__choices { display: flex; flex-wrap: wrap; gap: 8px; margin-block: 30px 22px; }
.featured-showcase__choices button { display: inline-flex; align-items: center; gap: 9px; padding: 12px 17px; min-height: 44px; border: 1px solid transparent; border-radius: 30px; background: transparent; color: var(--text-muted); font: inherit; font-size: .86rem; cursor: pointer; }
.featured-showcase__choices button[aria-current] { border-color: var(--line-inverse); background: #ffffff09; color: var(--text); }
.feature-dot { width: 6px; height: 6px; border-radius: 50%; background: #53c6ff; }
.feature-dot--teachin-time { background: #b6a0ff; }
.feature-dot--rock-the-fox { background: #ff7588; }
.featured-showcase__track { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; overscroll-behavior-x: contain; gap: 24px; scrollbar-width: none; border-radius: 26px; }
.featured-showcase__track::-webkit-scrollbar { display: none; }
.feature-panel { --accent: #7dcbff; --panel-glow: #1266b92b; flex: 0 0 100%; min-width: 0; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: center; gap: clamp(20px, 3vw, 44px); padding: clamp(26px, 4vw, 54px); scroll-snap-align: start; scroll-snap-stop: always; border: 1px solid var(--line); border-radius: 26px; background: radial-gradient(ellipse at 15% 60%, var(--panel-glow), transparent 68%), #0a111e; }
.feature-panel--teachin-time { --accent: #bda8ff; --panel-glow: #6844b844; background-color: #101027; }
.feature-panel--rock-the-fox { --accent: #ff8192; --panel-glow: #b21b3330; background-color: #110c11; }
.feature-art { display: block; position: relative; min-width: 0; width: 100%; aspect-ratio: 1 / 1.12; }
.feature-art__devices { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; }
.feature-art__poster { position: absolute; height: 84%; width: auto; max-width: 55%; object-fit: contain; border-radius: 5%; box-shadow: 0 20px 35px #0005; }
.feature-art__poster--front { left: 7%; top: 2%; transform: rotate(-7deg); }
.feature-art__poster--back { right: 4%; top: 13%; transform: rotate(8deg); }
.feature-panel__copy { min-width: 0; }
.feature-panel__brand { display: flex; align-items: center; gap: 13px; }
.feature-panel__brand img { width: 50px; height: 50px; flex-shrink: 0; border-radius: 12px; }
.feature-panel__brand p { font-weight: 650; font-size: 1.03rem; }
.feature-panel__brand small { display: block; color: var(--text-muted); font-size: .69rem; margin-top: 4px; }
.feature-panel h3 { font-size: clamp(2rem, 3.3vw, 3rem); letter-spacing: -.04em; line-height: 1.08; margin-top: 30px; }
.feature-panel h3 span { color: var(--accent); }
.feature-panel__summary { color: var(--text-muted); line-height: 1.7; font-size: 1rem; margin-top: 22px; }
.feature-panel__list { list-style: none; padding: 0; display: grid; gap: 12px; margin-block: 24px 28px; color: #c3ccdb; font-size: .85rem; }
.feature-panel__list li { display: flex; gap: 10px; align-items: baseline; }
.feature-panel__list li::before { content: ''; width: 5px; height: 5px; flex-shrink: 0; border-radius: 50%; background: var(--accent); }
.feature-panel__visit { background: var(--accent); color: #111320; gap: 12px; }
.featured-showcase__position { margin-top: 19px; color: var(--text-muted); text-align: right; font-size: .75rem; letter-spacing: .08em; }
.featured-showcase button:focus-visible, .featured-showcase a:focus-visible, .featured-showcase__track:focus-visible { outline: 2px solid #e0e9ff; outline-offset: 4px; }
@media (max-width: 760px) {
  .feature-panel { grid-template-columns: minmax(0, 1fr); gap: 10px; padding: 24px; align-content: start; }
  .feature-art { width: min(100%, 380px); margin-inline: auto; aspect-ratio: 1 / 1; }
  .feature-panel h3 { font-size: clamp(2rem, 7vw, 2.75rem); margin-top: 25px; }
  .feature-panel__summary { font-size: .95rem; }
  .featured-showcase__heading { align-items: flex-end; gap: 14px; }
  .featured-showcase__arrows { gap: 6px; }
  .featured-showcase__arrows button { width: 44px; height: 44px; }
  .featured-showcase__choices { gap: 3px; }
  .featured-showcase__choices button { font-size: .75rem; padding-inline: 10px; gap: 6px; }
}

/* Complete the app-family row with Heard's blue identity. */
.portfolio-dark .app-card--heard { border-color: #7dbbf23b; }
.portfolio-dark .app-card--heard .app-card__category,
.portfolio-dark .app-card--heard .app-card__links a { color: var(--blue); }
.heard-card-art { background: radial-gradient(ellipse at 85% 100%, #175a96 0%, transparent 65%), #071322; }
.heard-card-art::before { border-color: #70caff60; box-shadow: 0 0 22px #309dff25; }
.heard-card-art .teachin-card-art__headline > span { color: #8fc9ff; }
.heard-card-art .teachin-card-art__poster { border: 0; border-radius: 0; box-shadow: none; }
.heard-card-art:focus-visible { outline-color: #8fc9ff; }
@media (prefers-reduced-motion: reduce) { .heard-card-art .teachin-card-art__poster { transition: none; } }