/* ============================================================
   Project Archon — Navigation CSS
   Sticky top nav + mobile hamburger (CSS-only checkbox hack)
   ============================================================ */

/* ── Nav Wrapper ─────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: rgba(11, 18, 32, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-base);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* ── Logo ────────────────────────────────────────────────── */
.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.nav__logo-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-lg);
  background: var(--grad-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: var(--fw-bold);
  color: var(--text-inverse);
  box-shadow: var(--shadow-primary);
  flex-shrink: 0;
}

.nav__logo-text {
  font-size: var(--text-xl);
  font-weight: var(--fw-extrabold);
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.nav__logo-text span {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Desktop Links ───────────────────────────────────────── */
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex: 1;
  justify-content: center;
}

.nav__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.4rem 0.875rem;
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--text-secondary);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  position: relative;
}

.nav__link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav__link.active {
  color: var(--primary);
  background: var(--primary-glow);
}

.nav__link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 2px;
  background: var(--primary);
  border-radius: var(--radius-full);
}

/* ── Nav Actions ─────────────────────────────────────────── */
.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.nav__badge {
  position: relative;
}

.nav__badge-dot {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--danger);
  border: 2px solid var(--bg-primary);
}

/* ── Mobile Toggle (CSS-only checkbox hack) ──────────────── */
#nav-toggle {
  display: none;
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  cursor: pointer;
  flex-shrink: 0;
  transition: background var(--transition-base);
}

.nav__hamburger:hover {
  background: rgba(255, 255, 255, 0.1);
}

.nav__hamburger-line {
  width: 18px;
  height: 2px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  transform-origin: center;
}

/* Animate hamburger to X */
#nav-toggle:checked ~ .nav__inner .nav__hamburger .nav__hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
#nav-toggle:checked ~ .nav__inner .nav__hamburger .nav__hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
#nav-toggle:checked ~ .nav__inner .nav__hamburger .nav__hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Mobile Menu Drawer ──────────────────────────────────── */
.nav__mobile-menu {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: rgba(11, 18, 32, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  z-index: var(--z-overlay);
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition:
    transform var(--transition-slow),
    opacity var(--transition-slow),
    visibility var(--transition-slow);
}

#nav-toggle:checked ~ .nav__mobile-menu {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.nav__mobile-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  font-weight: var(--fw-medium);
  color: var(--text-secondary);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.nav__mobile-link:hover,
.nav__mobile-link.active {
  color: var(--primary);
  background: var(--primary-glow);
}

.nav__mobile-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-color);
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  .nav__links { gap: 0; }
  .nav__link  { padding: 0.4rem 0.6rem; }
}

@media (max-width: 768px) {
  .nav__links        { display: none; }
  .nav__actions .btn { display: none; }
  .nav__hamburger    { display: flex; }
}
#nav-toggle:checked ~ .nav__inner .nav__links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--bg-primary);
    padding: var(--space-4);
    z-index: 9999;
}

.nav__logo-img { height: 70px; width: auto; object-fit: contain; mix-blend-mode: screen; clip-path: inset(2% 0); }