/* ── NAV BAR ── */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
  transition: background 0.3s ease;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  flex-shrink: 0;
}

.nav-logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-link.active {
  color: var(--accent);
}

.nav-chevron {
  font-size: 0.55rem;
  opacity: 0.5;
  transition: transform 0.2s ease;
}

.nav-item:hover .nav-chevron,
.nav-item.open .nav-chevron {
  transform: rotate(180deg);
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--bg-elevated);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 0.5rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
}

.nav-item:hover .nav-dropdown,
.nav-item.open .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown a {
  display: block;
  padding: 0.6rem 1.25rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  transition: color 0.15s ease, background 0.15s ease;
}

.nav-dropdown a:hover,
.nav-dropdown a.active {
  color: var(--text-primary);
  background: var(--accent-dim);
}

.nav-cta {
  margin-left: 0.75rem;
}

.nav-cta .btn {
  padding: 0.55rem 1.25rem;
  font-size: 0.75rem;
}

/* ── HAMBURGER ── */

.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  padding: 4px;
  cursor: pointer;
  z-index: 1010;
}

.nav-hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── MOBILE MENU ── */

.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-deep);
  z-index: 999;
  overflow-y: auto;
  padding: 1rem 2rem 2rem;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.mobile-menu.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.mobile-menu a {
  display: block;
  padding: 0.85rem 0;
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--rule);
  transition: color 0.2s ease;
}

.mobile-menu a:hover,
.mobile-menu a.active {
  color: var(--accent);
}

.mobile-submenu {
  display: none;
  padding-left: 1rem;
}

.mobile-submenu a {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--text-muted);
}

.mobile-submenu a:hover,
.mobile-submenu a.active {
  color: var(--accent);
}

.mobile-menu-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0;
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--rule);
  width: 100%;
}

.mobile-menu-toggle .toggle-chevron {
  font-size: 0.65rem;
  transition: transform 0.2s ease;
  margin-left: auto;
}

.mobile-menu-toggle.open .toggle-chevron {
  transform: rotate(180deg);
}

.mobile-menu .btn {
  margin-top: 1.5rem;
  width: 100%;
  justify-content: center;
}

/* ── RESPONSIVE ── */

@media (max-width: 900px) {
  .nav-links,
  .nav-cta {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  .mobile-menu {
    display: block;
  }
}