/* Shared site header — identical on every page.
   Tokens are scoped so page-level --accent (e.g. privacy blue) is not overridden. */

.site-nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid #e7e7e5;
}

.site-nav .container {
  max-width: 987px;
  margin: 0 auto;
  padding: 0 21px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 65px;
  gap: 16px;
}

.site-nav .brand {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: #111;
  flex: none;
  transition: opacity 0.18s;
}

.site-nav .brand:hover {
  opacity: 0.7;
}

.site-nav .brand-logo {
  height: 32px;
  width: auto;
  display: block;
}

.site-nav .nav-right {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-left: auto;
}

.site-nav .nav-right a.plain {
  font-size: 0.875rem;
  font-weight: 500;
  color: #555;
  text-decoration: none;
  transition: color 0.18s, opacity 0.18s;
}

.site-nav .nav-right a.plain:hover {
  color: #111;
}

.site-nav .btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #0b0b0b;
  color: #fff;
  padding: 9px 18px;
  border-radius: 9px;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  transition: transform 0.18s, box-shadow 0.18s, opacity 0.18s;
}

.site-nav .btn-download:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.18);
}

.site-nav .btn-download:active {
  transform: translateY(0);
}

/* Hamburger — hidden on desktop */
.site-nav .nav-toggle {
  display: none;
  flex: none;
  width: 44px;
  height: 44px;
  margin-right: -10px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  border-radius: 9px;
  transition: background 0.18s;
}

.site-nav .nav-toggle:hover {
  background: rgba(0, 0, 0, 0.05);
}

.site-nav .nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: #111;
  border-radius: 1px;
  transition: transform 0.2s, opacity 0.2s;
}

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

.site-nav .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

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

/* Drawer + backdrop */
.nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: 150;
  background: rgba(0, 0, 0, 0.28);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
}

.nav-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

.nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 160;
  width: min(320px, 86vw);
  height: 100%;
  background: #fff;
  box-shadow: -12px 0 40px rgba(0, 0, 0, 0.12);
  padding: 80px 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transform: translateX(100%);
  transition: transform 0.24s ease;
  visibility: hidden;
}

.nav-drawer.is-open {
  transform: translateX(0);
  visibility: visible;
}

.nav-drawer a.drawer-link {
  display: block;
  padding: 14px 4px;
  font-size: 1.0625rem;
  font-weight: 500;
  color: #111;
  text-decoration: none;
  border-bottom: 1px solid #e7e7e5;
  transition: color 0.18s, opacity 0.18s;
}

.nav-drawer a.drawer-link:hover {
  color: #555;
}

.nav-drawer .btn-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 20px;
  background: #0b0b0b;
  color: #fff;
  padding: 12px 18px;
  border-radius: 9px;
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  transition: transform 0.18s, box-shadow 0.18s;
}

.nav-drawer .btn-download:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.18);
}

body.nav-open {
  overflow: hidden;
}

/* Focus rings for keyboard users */
.site-nav a:focus-visible,
.site-nav button:focus-visible,
.nav-drawer a:focus-visible {
  outline: 2px solid #111;
  outline-offset: 3px;
}

@media (max-width: 680px) {
  .site-nav .nav-right a.plain {
    display: none;
  }

  .site-nav .nav-toggle {
    display: flex;
  }

  .site-nav .nav-right {
    gap: 12px;
  }
}