@font-face {
  font-family: "Inter";
  src: url("./fonts/inter-latin-wght-normal.woff2") format("woff2-variations");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC,
    U+02C6, U+02DA, U+02DC, U+0300-0301, U+0303-0304,
    U+0308-0309, U+0323, U+0329, U+2000-206F, U+2074, U+20AC,
    U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root,
[data-bs-theme="light"],
[data-bs-theme="dark"] {
  --helium-font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  --helium-font-mono: "Cascadia Code", "SFMono-Regular", Consolas,
    "Liberation Mono", monospace;
  --bs-body-font-family: var(--helium-font-sans);
}

:root,
[data-bs-theme="light"] {
  --helium-accent: #5452d6;
  --helium-accent-strong: #403eb7;
  --helium-accent-soft: #efefff;
  --helium-surface: #ffffff;
  --helium-surface-subtle: #f7f7fb;
  --helium-border: #dedee9;
  --helium-text: #20202a;
  --helium-muted: #626274;
  --helium-shadow: 0 18px 50px rgba(34, 32, 86, 0.09);
}

[data-bs-theme="dark"] {
  --helium-accent: #aaa9ff;
  --helium-accent-strong: #c5c4ff;
  --helium-accent-soft: #292846;
  --helium-surface: #181820;
  --helium-surface-subtle: #20202a;
  --helium-border: #373746;
  --helium-text: #f4f4f8;
  --helium-muted: #b6b6c6;
  --helium-shadow: 0 18px 50px rgba(0, 0, 0, 0.24);
}

html,
body,
button,
input,
select,
textarea {
  font-family: var(--helium-font-sans);
}

body {
  font-weight: 300;
}

.navbar,
.toc,
.affix,
button,
.btn {
  font-weight: 500;
}

.navbar-brand,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
}

h1 {
  margin: 20px 0;
  color: rgb(22, 22, 22);
  font-size: 40px;
  font-weight: 600;
}

h2 {
  margin: 20px 0;
  color: rgb(22, 22, 22);
  font-size: 32px;
  font-weight: 600;
}

p {
  margin: 16px 0 0;
  color: rgb(22, 22, 22);
  font-size: 16px;
  font-weight: 300;
  line-height: 1.75rem;
}

[data-bs-theme="dark"] h1,
[data-bs-theme="dark"] h2,
[data-bs-theme="dark"] p {
  color: var(--helium-text);
}

code,
pre,
kbd,
samp {
  font-family: var(--helium-font-mono);
}

/* Global navigation */

.navbar {
  min-height: 4rem;
  border-bottom: 1px solid var(--helium-border);
  background-color: color-mix(in srgb, var(--helium-surface) 92%, transparent);
  backdrop-filter: blur(14px);
}

.navbar-brand {
  gap: 0.65rem;
  color: var(--helium-text);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.navbar-brand > img {
  display: none;
}

.navbar-brand::before {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 0.55rem;
  background:
    radial-gradient(circle at 68% 32%, #b9b8ff 0 17%, transparent 18%),
    linear-gradient(145deg, var(--helium-accent), var(--helium-accent-strong));
  box-shadow: 0 5px 14px color-mix(in srgb, var(--helium-accent) 35%, transparent);
  content: "";
  flex: 0 0 auto;
}

.navbar .search,
.navbar .form-control {
  border-radius: 0.65rem;
}

.breadcrumb,
.breadcrumb a,
.breadcrumb-item,
.breadcrumb-item.active {
  color: rgb(80, 80, 80);
  font-size: 14px;
  font-weight: 400;
}

[data-bs-theme="dark"] .breadcrumb,
[data-bs-theme="dark"] .breadcrumb a,
[data-bs-theme="dark"] .breadcrumb-item,
[data-bs-theme="dark"] .breadcrumb-item.active {
  color: var(--helium-muted);
}

.toc .nav-link.active,
.affix .nav-link.active {
  color: var(--helium-accent-strong);
  font-weight: 650;
}

/* Documentation homepage */

.helium-home {
  width: min(100%, 76rem);
  margin-inline: auto;
  padding: 1.5rem 1rem 4rem;
  color: var(--helium-text);
}

.helium-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2.25rem, 5vw, 5.5rem);
  border: 1px solid var(--helium-border);
  border-radius: 1.5rem;
  background:
    radial-gradient(circle at 88% 18%, color-mix(in srgb, var(--helium-accent) 22%, transparent) 0 8rem, transparent 8.1rem),
    linear-gradient(135deg, var(--helium-accent-soft), var(--helium-surface) 58%);
  box-shadow: var(--helium-shadow);
}

.helium-hero::after {
  position: absolute;
  right: -4.5rem;
  bottom: -6rem;
  width: 18rem;
  height: 18rem;
  border: 1px solid color-mix(in srgb, var(--helium-accent) 28%, transparent);
  border-radius: 50%;
  content: "";
}

.helium-eyebrow {
  margin: 0 0 0.65rem;
  color: var(--helium-accent-strong);
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.helium-hero h1 {
  max-width: 13ch;
  margin: 0;
  font-size: clamp(2.5rem, 6vw, 5rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.helium-lead {
  max-width: 48rem;
  margin: 1.5rem 0 0;
  color: var(--helium-muted);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  line-height: 1.65;
}

.helium-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.helium-actions .btn {
  border-radius: 0.65rem;
  font-weight: 650;
}

.helium-actions .btn-primary {
  --bs-btn-bg: var(--helium-accent-strong);
  --bs-btn-border-color: var(--helium-accent-strong);
  --bs-btn-hover-bg: var(--helium-accent);
  --bs-btn-hover-border-color: var(--helium-accent);
}

.helium-hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

.helium-hero-facts li {
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--helium-border);
  border-radius: 999px;
  background: color-mix(in srgb, var(--helium-surface) 84%, transparent);
  color: var(--helium-muted);
  font-size: 0.82rem;
  font-weight: 600;
}

.helium-home-section {
  margin-top: clamp(3rem, 7vw, 5.5rem);
}

.helium-section-heading {
  max-width: 47rem;
  margin-bottom: 1.5rem;
}

.helium-section-heading h2,
.helium-status-card h2,
.helium-contribute-strip h2 {
  margin: 0;
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  letter-spacing: -0.035em;
}

.helium-section-heading > p:last-child,
.helium-contribute-strip p {
  color: var(--helium-muted);
}

.helium-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.helium-card-grid--compact {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.helium-card {
  display: flex;
  min-height: 15rem;
  padding: 1.5rem;
  border: 1px solid var(--helium-border);
  border-radius: 1rem;
  background: var(--helium-surface);
  color: var(--helium-text);
  flex-direction: column;
  text-decoration: none;
  transition: border-color 150ms ease, box-shadow 150ms ease, transform 150ms ease;
}

.helium-card:hover {
  border-color: color-mix(in srgb, var(--helium-accent) 58%, var(--helium-border));
  box-shadow: var(--helium-shadow);
  color: var(--helium-text);
  transform: translateY(-2px);
}

.helium-card--featured {
  background: linear-gradient(145deg, var(--helium-accent-soft), var(--helium-surface));
}

.helium-card--compact {
  min-height: 10.5rem;
}

.helium-card-kicker {
  margin-bottom: 1.25rem;
  color: var(--helium-accent-strong);
  font-size: 0.75rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.helium-card h3 {
  margin: 0 0 0.75rem;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.helium-card p {
  margin: 0;
  color: var(--helium-muted);
  line-height: 1.6;
}

.helium-card-link {
  margin-top: auto;
  padding-top: 1.5rem;
  color: var(--helium-accent-strong);
  font-weight: 650;
}

.helium-home-section--split {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(18rem, 0.75fr);
  gap: 1.25rem;
  align-items: start;
}

.helium-link-list {
  overflow: hidden;
  border: 1px solid var(--helium-border);
  border-radius: 1rem;
  background: var(--helium-surface);
}

.helium-link-list > a {
  display: flex;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--helium-border);
  color: var(--helium-text);
  align-items: center;
  justify-content: space-between;
  text-decoration: none;
}

.helium-link-list > a:last-child {
  border-bottom: 0;
}

.helium-link-list > a:hover {
  background: var(--helium-surface-subtle);
}

.helium-link-list strong,
.helium-link-list small {
  display: block;
}

.helium-link-list small {
  margin-top: 0.2rem;
  color: var(--helium-muted);
}

.helium-status-card {
  padding: 1.5rem;
  border: 1px solid color-mix(in srgb, var(--helium-accent) 45%, var(--helium-border));
  border-radius: 1rem;
  background: var(--helium-accent-soft);
}

.helium-status-card p:not(.helium-eyebrow) {
  color: var(--helium-muted);
  line-height: 1.6;
}

.helium-status-card a {
  color: var(--helium-accent-strong);
  font-weight: 650;
  text-decoration: none;
}

.helium-contribute-strip {
  display: flex;
  gap: 2rem;
  padding: 1.75rem;
  border: 1px solid var(--helium-border);
  border-radius: 1rem;
  background: var(--helium-surface-subtle);
  align-items: center;
  justify-content: space-between;
}

.helium-contribute-strip .helium-actions {
  margin-top: 0;
  flex: 0 0 auto;
}

/* Article footer */

footer .helium-footer-links {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.9rem;
  margin-left: 1rem;
}

footer .helium-footer-links a {
  white-space: nowrap;
}

.helium-card:focus-visible,
.helium-link-list a:focus-visible,
.helium-status-card a:focus-visible,
.helium-actions a:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--helium-accent) 55%, transparent);
  outline-offset: 3px;
}

@media (max-width: 991.98px) {
  .helium-card-grid--compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .helium-home-section--split {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 767.98px) {
  .helium-home {
    padding-inline: 0.25rem;
  }

  .helium-hero {
    border-radius: 1rem;
  }

  .helium-card-grid,
  .helium-card-grid--compact {
    grid-template-columns: 1fr;
  }

  .helium-card {
    min-height: auto;
  }

  .helium-card-link {
    margin-top: 1.25rem;
    padding-top: 0;
  }

  .helium-contribute-strip,
  .helium-feedback {
    align-items: flex-start;
    flex-direction: column;
  }

  .helium-contribute-strip .helium-actions {
    width: 100%;
  }

  footer .helium-footer-links {
    display: flex;
    margin: 0.75rem 0 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .helium-card {
    transition: none;
  }

  .helium-card:hover {
    transform: none;
  }
}