/* =============================================================
   df-nav.css — DeviceFreedom Navigation v2.1
   Sticky frosted-glass nav, mobile hamburger drawer
   Requires: df-system.css loaded first
   ============================================================= */

.df-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10,10,10,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.df-nav__inner {
  max-width: 1200px;
  margin-inline: auto;
  padding: var(--sp-4) var(--sp-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-8);
}

/* Logo */
.df-nav__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  text-decoration: none;
  color: var(--df-text);
  flex-shrink: 0;
}
.df-nav__brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
  letter-spacing: -0.02em;
}

/* Desktop links */
.df-nav__links {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  list-style: none;
}
.df-nav__link {
  font-size: var(--text-sm);
  color: var(--df-muted);
  text-decoration: none;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding-block: var(--sp-1);
  transition: color var(--df-transition);
}
.df-nav__link:hover {
  color: var(--df-text);
}
.df-nav__link--active {
  color: var(--df-cyan);
}
.df-nav__link--community {
  color: var(--df-cyan);
}
.df-nav__link--community:hover {
  color: var(--df-text);
}

/* CTA in nav */
.df-nav__cta {
  font-size: var(--text-sm);
  padding: var(--sp-2) var(--sp-5);
  border-radius: var(--df-radius-pill);
  background: var(--df-cyan);
  color: #000;
  font-weight: 600;
  text-decoration: none;
  transition: opacity var(--df-transition), box-shadow var(--df-transition);
  white-space: nowrap;
}
.df-nav__cta:hover {
  opacity: 0.88;
  box-shadow: 0 0 20px var(--df-cyan-glow);
}

/* Hamburger toggle */
.df-nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--sp-2);
  flex-shrink: 0;
}
.df-nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--df-muted);
  border-radius: 2px;
  transition: all var(--df-transition);
  transform-origin: center;
}
.df-nav__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.df-nav__toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.df-nav__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile drawer */
.df-nav__drawer {
  display: none;
  flex-direction: column;
  padding: var(--sp-4) var(--sp-6) var(--sp-6);
  border-top: 1px solid rgba(255,255,255,0.05);
  background: rgba(10,10,10,0.97);
}
.df-nav__drawer[aria-hidden="false"] {
  display: flex;
}
.df-nav__drawer ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
  margin-bottom: var(--sp-6);
}
.df-nav__drawer a {
  color: var(--df-muted);
  text-decoration: none;
  font-size: var(--text-base);
  font-weight: 500;
  transition: color var(--df-transition);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}
.df-nav__drawer a:hover {
  color: var(--df-cyan);
}
.df-nav__drawer .df-nav__drawer-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: var(--sp-3) var(--sp-6);
  background: var(--df-cyan);
  color: #000;
  font-weight: 600;
  font-size: var(--text-sm);
  border-radius: var(--df-radius-pill);
  text-decoration: none;
  text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
  .df-nav__links,
  .df-nav__cta {
    display: none;
  }
  .df-nav__toggle {
    display: flex;
  }
}