/* Navbar shell */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(18px);
  background: rgba(255,255,255,0.65);
  border-bottom: 1px solid rgba(0,0,0,0.05);
}

/* Dark pages override */
body.dark .navbar {
  background: rgba(10,12,18,0.65);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.nav-logo {
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* Links */
.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
  margin: 0;
  padding: 0;
}

.nav-links a,
.nav-links span {
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  position: relative;
  font-weight: 500;
}

/* Hover underline animation */
.nav-links a::after,
.nav-links span::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: currentColor;
  transition: width 0.3s ease;
}

.nav-links a:hover::after,
.nav-links span:hover::after {
  width: 100%;
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}

.dropdown {
  position: absolute;
  top: 130%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: white;
  border-radius: 14px;
  padding: 0.5rem 0;
  box-shadow: 0 30px 60px rgba(0,0,0,0.15);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  min-width: 220px;
}

/* Dark mode dropdown */
body.dark .dropdown {
  background: #141826;
}

.dropdown a {
  display: block;
  padding: 0.75rem 1.25rem;
  font-size: 0.9rem;
}

.dropdown a:hover {
  background: rgba(0,0,0,0.05);
}

/* Show dropdown */
.nav-dropdown:hover .dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.navbar {
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.navbar:hover {
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}