/* ═══════════════════════════════════════════════
   WAJHA AGENCY — NAV.CSS
   Rule: Navigation layout, elements, hover links.
   ═══════════════════════════════════════════════ */

.header-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  background-color: rgba(var(--color-bg-page-rgb), 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-subtle);
  z-index: var(--z-nav);
  transition: background var(--ease-base), border var(--ease-base);
}

.header-nav.scrolled {
  background-color: var(--color-bg-page);
  border-color: var(--color-border-base);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-arabic);
  font-weight: var(--weight-black);
  font-size: var(--text-lg);
  color: var(--color-text-primary);
}

.nav-brand img {
  height: 32px;
  width: auto;
}

.nav-menu {
  display: none;
}

@media (min-width: 768px) {
  .nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-6);
  }
}

.nav-link {
  font-family: var(--font-arabic);
  font-weight: var(--weight-medium);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  transition: color var(--ease-fast);
  padding-block: var(--space-2);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-brand-primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--ease-base);
}

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

.nav-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-actions {
  display: none;
}

@media (min-width: 768px) {
  .nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
  }
}

/* Mobile Nav Toggle Button */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  cursor: pointer;
  z-index: var(--z-overlay);
}

@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: transform var(--ease-base), opacity var(--ease-base);
}

/* Active Open Menu (Mobile Overlay) */
.mobile-nav {
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-bg-page);
  z-index: var(--z-nav);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  align-items: center;
  justify-content: center;
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transition: transform var(--ease-slow), opacity var(--ease-slow), visibility var(--ease-slow);
  border-top: 1px solid var(--color-border-subtle);
}

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

.mobile-nav .nav-link {
  font-size: var(--text-xl);
}

/* Hamburguer states */
.nav-toggle.open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ── CUSTOM TOGGLE BUTTON STYLES ── */
.btn-toggle {
  background: transparent;
  border: 1px solid var(--color-border-subtle);
  color: var(--color-text-primary);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--ease-base);
  padding: 0;
  flex-shrink: 0;
}

.btn-toggle:hover {
  background-color: var(--color-bg-elevated);
  border-color: var(--color-border-base);
  color: var(--color-brand-primary-light);
}

/* Theme Icon Visibility */
html[data-theme="dark"] .theme-icon-dark {
  display: none;
}
html[data-theme="light"] .theme-icon-light {
  display: none;
}

.mobile-toggles {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-2);
}