/* ============================================================
   NAVBAR
   ============================================================ */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background .35s, box-shadow .35s, border-color .35s;
}
#navbar.dark-nav {
  background: rgba(15,5,32,.88);
  border-bottom: 1.5px solid rgba(244,114,182,.1);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
}
#navbar.light-nav {
  background: rgba(255,249,252,.96);
  border-bottom: 1.5px solid var(--border);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 0 var(--border);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto;
  padding: 0 2.5rem; height: 72px;
  display: flex; align-items: center; justify-content: space-between;
}

/* Pixel font logo */
.nav-logo {
  font-family: 'Press Start 2P', monospace;
  font-size: .72rem; font-weight: 400; letter-spacing: 0;
  color: var(--white); transition: color .3s;
  line-height: 1; display: flex; align-items: center;
}
.nav-logo span { color: var(--violet-glow); }
#navbar.light-nav .nav-logo { color: var(--text); }
#navbar.light-nav .nav-logo span { color: var(--violet); }

.nav-links { display: flex; gap: 2.25rem; list-style: none; }
.nav-links a {
  font-size: .8rem; font-weight: 600; letter-spacing: .03em;
  color: rgba(255,255,255,.45); transition: color .2s;
  position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; left: 0; bottom: -3px;
  width: 0; height: 2px;
  background: var(--violet-glow);
  transition: width .2s;
}
.nav-links a:hover { color: var(--white); }
.nav-links a:hover::after { width: 100%; }
#navbar.light-nav .nav-links a { color: var(--text-muted); }
#navbar.light-nav .nav-links a::after { background: var(--violet); }
#navbar.light-nav .nav-links a:hover { color: var(--violet); }
.nav-links a.active { color: var(--violet-glow); }
#navbar.light-nav .nav-links a.active { color: var(--violet); }

.nav-actions {
  display: flex; align-items: center; gap: .5rem;
}

/* Theme toggle */
#theme-toggle {
  width: 36px; height: 36px; border-radius: 4px;
  background: transparent;
  border: 1.5px solid rgba(255,255,255,.18);
  color: rgba(255,255,255,.6);
  cursor: pointer; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  transition: background .2s, border-color .2s, color .2s, transform .2s;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
#theme-toggle svg { width: 15px; height: 15px; flex-shrink: 0; pointer-events: none; }
#theme-toggle:hover {
  background: rgba(244,114,182,.15);
  border-color: rgba(244,114,182,.5);
  color: var(--violet-glow);
  transform: rotate(15deg);
}
#navbar.light-nav #theme-toggle {
  border-color: var(--border);
  color: var(--text-muted);
}
#navbar.light-nav #theme-toggle:hover {
  background: var(--violet-soft);
  border-color: var(--violet);
  color: var(--violet);
}

/* Icon visibility */
.icon-sun  { display: none; }
.icon-moon { display: block; }

.hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: rgba(255,255,255,.6);
  border-radius: 0; transition: all .3s;
}
#navbar.light-nav .hamburger span { background: var(--text); }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: flex; flex-direction: column;
  position: fixed; top: 72px; left: 0; right: 0; z-index: 99;
  background: rgba(255,249,252,.98);
  border-bottom: 1.5px solid var(--border);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  padding: 0 1.5rem; max-height: 0; overflow: hidden;
  transition: max-height .38s cubic-bezier(.4,0,.2,1), padding .3s ease;
}
.mobile-menu.open {
  max-height: 520px;
  padding: .75rem 1.5rem;
}
.mobile-link {
  padding: .9rem 0; font-size: .9rem; font-weight: 600;
  color: var(--text-muted); border-bottom: 1.5px solid var(--border);
  transition: color .2s;
}
.mobile-link:last-child { border: none; }
.mobile-link:hover { color: var(--violet); }