/*
  Shared site header, used by the client SPA (index.html) and every
  worker-rendered static page (Rule Guide). Self-contained so it works
  identically with or without React hydration.
*/

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 68px;
  background: rgba(255, 255, 255, 0.78);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
  isolation: isolate;
  font-family: "Rethink Sans", system-ui, -apple-system, sans-serif;
}

.site-header.is-scrolled {
  border-bottom-color: rgba(235, 235, 235, 0.9);
}

@media (prefers-color-scheme: dark) {
  .site-header {
    background: rgba(22, 24, 28, 0.78);
  }

  .site-header.is-scrolled {
    border-bottom-color: rgba(43, 47, 54, 0.9);
  }
}

.site-header__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-header a {
  color: inherit;
  text-decoration: none;
}

.site-header a:hover {
  text-decoration: none;
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.site-header__logo-icon {
  width: 36px;
  height: 36px;
  display: block;
  flex-shrink: 0;
}

.site-header__logo-wordmark {
  height: 20px;
  width: auto;
  display: block;
}

@media (prefers-color-scheme: dark) {
  .site-header__logo-wordmark {
    filter: invert(1);
  }
}

.site-header__links {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-left: auto;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.site-header a.site-header__link {
  padding: 8px 8px;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.5;
  color: #6d6d6d;
}

.site-header a.site-header__link:hover {
  opacity: 0.75;
}

.site-header a.site-header__cta {
  margin-left: 8px;
  padding: 0 21px;
  height: 45px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: #ffffff;
  background: var(--immio-primary, #007aff);
  border-radius: 100px;
  border: none;
  cursor: pointer;
  font-family: inherit;
  box-shadow: 0 8px 22px rgba(0, 122, 255, 0.28);
  text-decoration: none;
  box-sizing: border-box;
}

.site-header a.site-header__cta:hover {
  opacity: 0.9;
}

.site-header__toggle {
  display: none;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 10px;
  background: transparent;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-family: inherit;
  color: #6d6d6d;
}

button.site-header__toggle:hover {
  background: rgba(0, 0, 0, 0.06);
  transform: none;
  color: #6d6d6d;
}

.site-header__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 20px;
  height: 16px;
}

.site-header__hamburger-line {
  display: block;
  height: 2px;
  width: 100%;
  background: currentColor;
  border-radius: 1px;
  transition: transform 0.22s ease, opacity 0.18s ease;
  transform-origin: center;
}

.site-header__toggle[aria-expanded="true"] .site-header__hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.site-header__toggle[aria-expanded="true"] .site-header__hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 900px) {
  .site-header__inner {
    padding: 0 16px;
    gap: 8px;
  }

  .site-header__toggle {
    display: inline-flex;
  }

  .site-header__links {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 24px;
    background: #ffffff;
    display: none;
  }

  @media (prefers-color-scheme: dark) {
    .site-header__links {
      background: #16181c;
    }
  }

  .site-header__links.is-open {
    display: flex;
  }

  .site-header a.site-header__link {
    text-align: left;
    font-size: 16px;
  }
}