.mobile-nav-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(2px);
  z-index: 999;
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.mobile-nav-backdrop[data-open="true"] {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav {
  position: fixed;
  top: 30px;
  right: 0;
  bottom: 0;
  width: min(320px, 80vw);
  background: color-mix(in oklab, var(--bg, #0a0a0a), transparent 5%);
  border-left: 1px solid rgba(255,255,255,0.08);
  box-shadow: -20px 0 40px rgba(0,0,0,0.45);
  padding: 72px 24px 32px;
  transform: translateX(100%);
  transition: transform 0.28s ease;
  z-index: 1000;
  pointer-events: none;
  opacity: 0.8;
}

.mobile-nav[data-open="true"] {
  transform: translateX(0);
  pointer-events: auto;
}

.mobile-nav-inner {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mobile-nav-item {
  color: inherit;
  text-decoration: none;
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 0.04em;
}

.mobile-nav-item.active {
  color: var(--accent, #0a84ff);
}

.mobile-theme-toggle {
  margin-top: 24px;
  align-self: flex-start;
  background: transparent;
  color: inherit;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 999px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 15px;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0;
  margin-right: 12px;
  cursor: pointer;
  color: inherit;
}

.mobile-menu-toggle:focus-visible {
  outline: 2px solid var(--accent, #0a84ff);
  outline-offset: 2px;
}

.mobile-menu-icon,
.mobile-menu-icon::before,
.mobile-menu-icon::after {
  display: block;
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  position: relative;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.mobile-menu-icon::before,
.mobile-menu-icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.mobile-menu-icon::before { top: -7px; }
.mobile-menu-icon::after { top: 7px; }

.mobile-menu-toggle[aria-expanded="true"] .mobile-menu-icon {
  background: transparent;
}

.mobile-menu-toggle[aria-expanded="true"] .mobile-menu-icon::before {
  transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] .mobile-menu-icon::after {
  transform: translateY(-7px) rotate(-45deg);
}

body.mobile-nav-open {
  overflow: hidden;
}

@media (max-width: 768px) {
  .site-header {
    gap: 12px;
  }

  .gnav,
  .search-form,
  .theme-toggle {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
    order: 2;
  }
}