#topnav {
  position: fixed;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 32px);
  max-width: 1080px;
  z-index: 100;
  background: rgba(10, 20, 38, 0.82);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  box-shadow: 0 8px 30px rgba(2, 6, 23, 0.35);
}

#topnav .nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

#topnav .logo {
  display: flex;
  align-items: center;
  margin-left: 18px;
}

#topnav .logo img {
  display: block;
  width: auto;
  height: 52px;
  object-fit: contain;
}

#topnav .logo-day { display: none; }
[data-theme="light"] #topnav .logo-night { display: none; }
[data-theme="light"] #topnav .logo-day { display: block; }

#topnav .nav-links {
  display: flex;
  gap: 32px;
}

#topnav .nav-links a {
  color: var(--slate-400);
  font-size: 0.9rem;
  transition: color 0.2s;
}

#topnav .nav-links a:hover,
#topnav .nav-links a.active { color: var(--white); }

#topnav .nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-right: 10px;
}

#topnav .nav-cta {
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--amber);
  color: #0f172a;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
}

#topnav .nav-cta:hover { background: var(--amber-light); }

.theme-toggle,
#topnav .hamburger,
.m-close {
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--white);
  cursor: pointer;
}

.theme-toggle { display: flex; }
.theme-toggle svg { width: 19px; height: 19px; }
#topnav .hamburger { display: none; }
.m-close { display: flex; }

.theme-toggle:hover,
#topnav .hamburger:hover,
.m-close:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(245, 158, 11, 0.4);
}

body.menu-open #topnav { display: none; }

.mobile-backdrop {
  position: fixed;
  inset: 0;
  z-index: 99990;
  visibility: hidden;
  opacity: 0;
  background: rgba(2, 6, 23, 0.6);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

.mobile-backdrop.open { visibility: visible; opacity: 1; }

.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  left: auto;
  z-index: 99999;
  display: flex;
  flex-direction: column;
  width: min(84vw, 340px);
  height: 100dvh;
  padding: 18px 22px 26px;
  border: 0;
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  background: #0a1426;
  box-shadow: -30px 0 80px rgba(2, 6, 23, 0.55);
  opacity: 1;
  pointer-events: auto;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.33, 1, 0.68, 1);
}

.mobile-menu.open { transform: translateX(0); }

.m-drawer-head {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: space-between;
  min-height: 42px;
  margin-bottom: 28px;
}

.m-drawer-title {
  color: var(--slate-500);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.mobile-nav-links {
  position: static;
  display: flex;
  flex-direction: column;
  gap: 2px;
  width: auto;
  max-width: none;
  margin-bottom: 12px;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  transform: none;
}

.mobile-menu-footer { margin-top: auto; }

[data-theme="light"] {
  --slate-950: #f8fafc;
  --slate-900: #f1f5f9;
  --slate-800: #e2e8f0;
  --slate-500: #64748b;
  --slate-400: #475569;
  --slate-300: #334155;
  --white: #0f172a;
}

[data-theme="light"] body { background: #f8fafc; }
[data-theme="light"] #topnav {
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(15, 23, 42, 0.08);
}
[data-theme="light"] .theme-toggle,
[data-theme="light"] #topnav .hamburger,
[data-theme="light"] .m-close {
  background: rgba(15, 23, 42, 0.05);
  border-color: rgba(15, 23, 42, 0.12);
  color: #0f172a;
}
[data-theme="light"] .mobile-menu {
  background: #ffffff;
  border-color: rgba(15, 23, 42, 0.1);
}
[data-theme="light"] .pf-header {
  background: radial-gradient(900px 500px at 80% 0%, rgba(249, 115, 22, 0.1), transparent 60%), linear-gradient(180deg, #f8fafc 0%, #eef2f7 100%);
}
[data-theme="light"] .pf-cta { background: linear-gradient(180deg, #eef2f7, #f8fafc); }
[data-theme="light"] .browser-mock { border-color: rgba(15, 23, 42, 0.14); box-shadow: 0 30px 80px rgba(15, 23, 42, 0.18); }
[data-theme="light"] .spec,
[data-theme="light"] .review-feature { background: rgba(255, 255, 255, 0.72); border-color: rgba(15, 23, 42, 0.1); }
[data-theme="light"] footer { border-color: rgba(15, 23, 42, 0.08); }

@media (max-width: 768px) {
  #topnav .nav-links,
  #topnav .nav-cta { display: none; }
  #topnav .hamburger { display: flex; }
  #topnav { -webkit-backdrop-filter: none; backdrop-filter: none; }
}