:root {
  color-scheme: light;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 1px solid #a8bfd0;
  border-radius: 50%;
  background: #ffffff5c;
  color: var(--ink);
}

.theme-toggle[hidden],
.theme-icon-sun {
  display: none;
}

.theme-toggle:hover {
  background: #e2edf4;
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --ink: #e6edf7;
  --muted: #a1b3cb;
  --blue: #79ddeb;
  --ice: #182940;
  --paper: #111e31;
  --gold: #f2a5d2;
  --line: #30435d;
}

:root[data-theme="dark"] body {
  background: radial-gradient(ellipse at 10% 0%, #16374a 0, transparent 35%),
    radial-gradient(ellipse at 100% 55%, #2a1d35 0, transparent 30%), #0b1220;
}

:root[data-theme="dark"] em {
  color: #79ddeb;
}

:root[data-theme="dark"] .skip-link,
:root[data-theme="dark"] .video-feature {
  background: #111e31;
}

:root[data-theme="dark"] .nav-cta,
:root[data-theme="dark"] .theme-toggle,
:root[data-theme="dark"] .secondary-button {
  border-color: #405774;
  background: #182940;
}

:root[data-theme="dark"] .theme-toggle:hover,
:root[data-theme="dark"] .secondary-button:hover,
:root[data-theme="dark"] .copy-command:hover {
  background: #243c56;
}

:root[data-theme="dark"] .theme-icon-sun {
  display: block;
}

:root[data-theme="dark"] .theme-icon-moon {
  display: none;
}

:root[data-theme="dark"] .art-frame {
  border-color: #405774;
  box-shadow: 0 24px 58px -35px #000b;
}

:root[data-theme="dark"] .primary-button {
  background: #79ddeb;
  border-color: #79ddeb;
  color: #0b1220;
}

:root[data-theme="dark"] .primary-button:hover {
  background: #a2e9f2;
  border-color: #a2e9f2;
}

:root[data-theme="dark"] .principle {
  border-color: #405774;
}

:root[data-theme="dark"] .play {
  color: #0b1220;
}

:root[data-theme="dark"] .start-strip {
  border-color: #405774;
  background: linear-gradient(115deg, #162f45, #111e31 65%, #282139);
}

:root[data-theme="dark"] code,
:root[data-theme="dark"] .command-row code {
  background: #182940;
  color: #c9e9f1;
  border-color: #405774;
}

:root[data-theme="dark"] .copy-command {
  border-color: #405774;
}

:root[data-theme="dark"] .offer {
  border-color: #574059;
  background: linear-gradient(90deg, #2a203580, transparent);
}

:root[data-theme="dark"] .offer-label {
  color: #f2a5d2;
}

:root[data-theme="dark"] .offer-price {
  border-color: #574059;
}

@media (max-width: 760px) {
  .top-nav {
    gap: 8px;
    flex-shrink: 0;
  }

  .nav-cta {
    white-space: nowrap;
  }

  .theme-toggle {
    width: 40px;
    height: 40px;
    padding: 9px;
  }
}

@media (max-width: 390px) {
  .wordmark {
    font-size: 16px;
    letter-spacing: .16em;
  }
}

@media (max-width: 350px) {
  .masthead {
    gap: 8px;
  }

  .wordmark {
    gap: 6px;
    font-size: 15px;
    letter-spacing: .12em;
  }

  .sigil {
    width: 18px;
    height: 24px;
    flex-shrink: 0;
  }

  .top-nav {
    gap: 6px;
  }

  .nav-cta {
    padding: 8px 9px;
  }
}