:root {
  --ru-shell-flame: #ff4500;
  --ru-shell-clay: #b65a3a;
  --ru-shell-sand: #f4a261;
  --ru-shell-teal: #2a9d8f;
  --ru-shell-deep: #264653;
  --ru-shell-ink: #081116;
  --ru-shell-mist: #f3e5d5;
  --ru-shell-white: #fff7f0;
  --ru-shell-page-bg:
    radial-gradient(
      circle at top left,
      rgba(255, 69, 0, 0.24),
      transparent 24%
    ),
    radial-gradient(
      circle at top right,
      rgba(42, 157, 143, 0.18),
      transparent 28%
    ),
    linear-gradient(180deg, #0a1218, #081116 22%, #060d11 100%);
  --ru-shell-page-color: #ecdccf;
  --ru-shell-card-border: rgba(244, 162, 97, 0.16);
  --ru-shell-card-bg:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 35%),
    linear-gradient(145deg, rgba(18, 32, 39, 0.92), rgba(10, 18, 23, 0.94));
  --ru-shell-card-shadow: 0 24px 60px rgba(2, 6, 10, 0.28);
  --ru-shell-kicker-bg: color-mix(
    in srgb,
    var(--ru-shell-teal) 16%,
    transparent
  );
  --ru-shell-kicker-color: #c7f0ea;
  --ru-shell-list-bg: rgba(255, 255, 255, 0.04);
  --ru-shell-link-shadow: 0 12px 28px rgba(255, 69, 0, 0.16);
  --ru-shell-link-hover-shadow: 0 14px 28px rgba(255, 69, 0, 0.24);
  --ru-shell-link-hover: var(--ru-shell-white);
  color-scheme: dark light;
  font-family: 'Fira Sans', Helvetica, Arial, sans-serif;
}

:root[data-theme='light'] {
  --ru-shell-page-bg:
    radial-gradient(circle at top left, rgba(255, 69, 0, 0.1), transparent 28%),
    radial-gradient(
      circle at top right,
      rgba(42, 157, 143, 0.12),
      transparent 32%
    ),
    linear-gradient(180deg, #fff4e8, #fff8f1 18rem);
  --ru-shell-page-color: #355864;
  --ru-shell-card-border: rgba(182, 90, 58, 0.18);
  --ru-shell-card-bg: rgba(255, 255, 255, 0.88);
  --ru-shell-card-shadow: 0 24px 50px rgba(38, 70, 83, 0.08);
  --ru-shell-kicker-bg: rgba(42, 157, 143, 0.12);
  --ru-shell-kicker-color: var(--ru-shell-teal);
  --ru-shell-list-bg: rgba(244, 162, 97, 0.08);
  --ru-shell-link-shadow: 0 10px 24px rgba(182, 90, 58, 0.12);
  --ru-shell-link-hover-shadow: 0 12px 24px rgba(182, 90, 58, 0.18);
  --ru-shell-link-hover: var(--ru-shell-clay);
}

:root[data-mascot-mode='2d'] {
  --ru-shell-card-shadow: none;
  --ru-shell-link-shadow: none;
  --ru-shell-link-hover-shadow: none;
}

body.ru-rustdoc-shell {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  background: var(--ru-shell-page-bg);
  color: var(--ru-shell-page-color);
}

.ru-shell-card {
  width: min(100%, 52rem);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border: 1px solid var(--ru-shell-card-border);
  border-radius: 1.75rem;
  background: var(--ru-shell-card-bg);
  box-shadow: var(--ru-shell-card-shadow);
}

.ru-shell-kicker {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  margin: 0 0 1rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999rem;
  background: var(--ru-shell-kicker-bg);
  color: var(--ru-shell-kicker-color);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ru-shell-card h1 {
  margin: 0;
  font-size: clamp(2rem, 1.4rem + 2vw, 3rem);
  line-height: 1.05;
  text-wrap: balance;
}

.ru-shell-card p {
  max-width: 58ch;
  margin: 1rem 0 0;
  line-height: 1.65;
}

.ru-shell-list {
  display: grid;
  gap: 0.75rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.ru-shell-list li {
  padding: 0.9rem 1rem;
  border-radius: 1rem;
  background: var(--ru-shell-list-bg);
  line-height: 1.55;
}

.ru-rustdoc-shell a {
  color: var(--ru-shell-sand);
  font-weight: 700;
  text-decoration: none;
  transition:
    color 180ms ease,
    transform 180ms ease,
    box-shadow 180ms ease;
}

.ru-rustdoc-shell a:hover,
.ru-rustdoc-shell a:focus-visible {
  color: var(--ru-shell-link-hover);
}

.ru-shell-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 1.25rem;
  padding: 0.72rem 1rem;
  border-radius: 999rem;
  background: linear-gradient(
    135deg,
    var(--ru-shell-flame),
    var(--ru-shell-sand)
  );
  color: var(--ru-shell-white) !important;
  box-shadow: var(--ru-shell-link-shadow);
}

.ru-shell-link:hover,
.ru-shell-link:focus-visible {
  transform: translateY(-1px);
  box-shadow: var(--ru-shell-link-hover-shadow);
}

:root[data-theme='light'] .ru-shell-link:hover,
:root[data-theme='light'] .ru-shell-link:focus-visible {
  color: var(--ru-shell-white) !important;
}