/* ═══════════════════════════════════════════
   NAVBAR — Floating Glassmorphism Header
   RTL-first · Responsive · Accessible
   ═══════════════════════════════════════════ */

/* ── Skip Link ── */
.skip-link {
  position: absolute;
  top: -100%;
  inset-inline-start: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  border-radius: var(--radius-md);
  z-index: calc(var(--z-toast) + 1);
  text-decoration: none;
  transition: top var(--duration-fast) var(--ease-default);
}

.skip-link:focus {
  top: var(--space-4);
}

/* ── Navbar Shell ── */
.navbar-floating {
  position: sticky;
  top: var(--space-3);
  inset-inline: var(--space-3);
  z-index: var(--z-navbar);
  background: rgba(245, 252, 252, 0.82);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  border: 1px solid rgba(212, 232, 232, 0.6);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition:
    top var(--duration-normal) var(--ease-default),
    inset-inline var(--duration-normal) var(--ease-default),
    border-radius var(--duration-normal) var(--ease-default),
    box-shadow var(--duration-normal) var(--ease-default),
    background var(--duration-normal) var(--ease-default),
    transform var(--duration-normal) var(--ease-default);
  will-change: transform, top, box-shadow;
}

/* ── Scrolled State ── */
.navbar-floating.scrolled {
  top: var(--space-1);
  inset-inline: var(--space-1);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  background: rgba(245, 252, 252, 0.95);
  border-color: rgba(212, 232, 232, 0.8);
}

/* ── Hidden on Scroll Down ── */
.navbar-floating.navbar-hidden {
  transform: translateY(calc(-100% - var(--space-4)));
}

/* ── Container ── */
.navbar-container {
  max-width: var(--container-xl);
  margin-inline: auto;
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  transition: padding var(--duration-normal) var(--ease-default);
}

.navbar-floating.scrolled .navbar-container {
  padding-block: var(--space-2);
}

/* ── Brand / Logo ── */
.navbar-brand {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
  transition: transform var(--duration-fast) var(--ease-bounce);
}

.navbar-brand:hover {
  transform: scale(1.03);
}

.navbar-brand:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
  border-radius: var(--radius-sm);
}

.navbar-logo {
  height: 48px;
  width: auto;
  transition:
    height var(--duration-normal) var(--ease-default),
    opacity var(--duration-fast) var(--ease-default);
}

.navbar-floating.scrolled .navbar-logo {
  height: 40px;
}

/* ── Content Area ── */
.navbar-content {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 1;
  justify-content: flex-end;
}

/* ── Search ── */
.navbar-search {
  display: none;
  flex: 0 0 auto;
}

@media (min-width: 768px) {
  .navbar-search {
    display: block;
    max-width: 280px;
  }
}

@media (min-width: 1024px) {
  .navbar-search {
    max-width: 320px;
  }
}

.search-form {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
  transition:
    border-color var(--duration-fast) var(--ease-default),
    box-shadow var(--duration-fast) var(--ease-default),
    background var(--duration-fast) var(--ease-default);
}

.search-form:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(144, 196, 196, 0.25);
  background: var(--color-surface);
}

.search-input {
  flex: 1;
  border: none;
  background: transparent;
  padding: var(--space-2) var(--space-3);
  padding-inline-start: var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text);
  outline: none;
  min-width: 0;
}

.search-input::placeholder {
  color: var(--color-text-muted);
}

.search-input:focus-visible {
  outline: none;
}

.search-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  margin-inline-start: auto;
  margin-inline-end: var(--space-1);
  border: none;
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-radius: 50%;
  cursor: pointer;
  font-size: var(--text-sm);
  transition:
    background var(--duration-fast) var(--ease-default),
    transform var(--duration-fast) var(--ease-bounce),
    box-shadow var(--duration-fast) var(--ease-default);
}

.search-button:hover {
  background: var(--color-primary-hover);
  transform: scale(1.08);
  box-shadow: var(--shadow-sm);
}

.search-button:active {
  transform: scale(0.95);
  box-shadow: none;
}

.search-button:focus-visible {
  box-shadow: var(--shadow-focus);
}

/* ── Hamburger Toggle ── */
.navbar-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: var(--min-tap-target);
  height: var(--min-tap-target);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  border-radius: var(--radius-md);
  transition: background var(--duration-fast) var(--ease-default);
}

.navbar-toggle:hover {
  background: var(--color-bg-alt);
}

.navbar-toggle:focus-visible {
  box-shadow: var(--shadow-focus);
}

@media (min-width: 1024px) {
  .navbar-toggle {
    display: none;
  }
}

.navbar-toggle-icon {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition:
    transform var(--duration-normal) var(--ease-default),
    opacity var(--duration-fast) var(--ease-default);
  transform-origin: center;
}

.navbar-toggle[aria-expanded="true"] .navbar-toggle-icon:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar-toggle[aria-expanded="true"] .navbar-toggle-icon:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.navbar-toggle[aria-expanded="true"] .navbar-toggle-icon:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Mobile Menu Panel (slide from inline-end / right in RTL) ── */
.navbar-menu {
  position: fixed;
  inset: 0;
  inset-inline-start: auto;
  inset-inline-end: 0;
  width: min(85vw, 380px);
  height: 100dvh;
  background: var(--color-surface);
  z-index: var(--z-overlay);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition:
    transform var(--duration-normal) var(--ease-out),
    box-shadow var(--duration-normal) var(--ease-default);
  box-shadow: none;
  overflow: hidden;
}

/* RTL: translateX(100%) pushes it OFF to the LEFT (logical start).
   We want it to slide IN from the RIGHT (logical end / inline-end).
   In RTL, translateX(100%) = slides from right. Correct. */
/* LTR override: panel slides from the right */
[dir="ltr"] .navbar-menu {
  transform: translateX(100%);
}

.navbar-menu.open {
  transform: translateX(0);
  box-shadow: -4px 0 30px rgba(26, 47, 53, 0.15);
}

[dir="ltr"] .navbar-menu.open {
  box-shadow: -4px 0 30px rgba(26, 47, 53, 0.15);
}

[dir="rtl"] .navbar-menu.open {
  box-shadow: 4px 0 30px rgba(26, 47, 53, 0.15);
}

/* ── Mobile Backdrop ── */
.navbar-backdrop {
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  z-index: calc(var(--z-overlay) - 1);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--duration-normal) var(--ease-default),
    visibility var(--duration-normal) var(--ease-default);
}

.navbar-backdrop.open {
  opacity: 1;
  visibility: visible;
}

/* ── Desktop Menu (inline) ── */
@media (min-width: 1024px) {
  .navbar-menu {
    position: static;
    width: auto;
    height: auto;
    background: transparent;
    transform: none;
    box-shadow: none;
    flex-direction: row;
    overflow: visible;
  }

  .navbar-menu.open {
    transform: none;
    box-shadow: none;
  }
}

/* ── Mobile Scroll Area ── */
.navbar-scroll {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-16) var(--space-4) var(--space-4);
  -webkit-overflow-scrolling: touch;
}

@media (min-width: 1024px) {
  .navbar-scroll {
    overflow: visible;
    padding: 0;
  }
}

/* ── Close Button (mobile) ── */
.mobile-close-btn {
  position: absolute;
  inset-block-start: var(--space-4);
  inset-inline-end: var(--space-4);
  z-index: 10;
  width: var(--min-tap-target);
  height: var(--min-tap-target);
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: var(--color-bg-alt);
  color: var(--color-text);
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: var(--text-xl);
  transition:
    background var(--duration-fast) var(--ease-default),
    transform var(--duration-fast) var(--ease-bounce);
}

.mobile-close-btn:hover {
  background: var(--color-border);
  transform: scale(1.1);
}

.mobile-close-btn:focus-visible {
  box-shadow: var(--shadow-focus);
}

@media (min-width: 1024px) {
  .mobile-close-btn {
    display: none;
  }
}

/* ── Nav List ── */
.navbar-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  list-style: none;
  margin: 0;
  padding: 0;
}

@media (min-width: 1024px) {
  .navbar-nav {
    flex-direction: row;
    align-items: center;
    gap: var(--space-1);
  }
}

/* ── Nav Item ── */
.nav-item {
  position: relative;
}

/* ── Divider ── */
.nav-divider {
  height: 1px;
  background: var(--color-border);
  margin-block: var(--space-2);
}

@media (min-width: 1024px) {
  .nav-divider {
    width: 1px;
    height: 24px;
    margin-block: 0;
    margin-inline: var(--space-2);
  }
}

/* ── Nav Link ── */
.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  color: var(--color-text);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition:
    background var(--duration-fast) var(--ease-default),
    color var(--duration-fast) var(--ease-default),
    transform var(--duration-fast) var(--ease-default);
  position: relative;
}

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

.nav-link:focus-visible {
  box-shadow: var(--shadow-focus);
  outline: none;
}

.nav-link.active {
  background: var(--color-primary);
  color: var(--color-on-primary);
}

.nav-link.active:hover {
  background: var(--color-primary-hover);
  color: var(--color-on-primary);
}

.nav-link i {
  font-size: var(--text-lg);
  flex-shrink: 0;
}

.nav-link span {
  white-space: nowrap;
}

@media (min-width: 1024px) {
  .nav-link {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    border-radius: var(--radius-md);
  }

  .nav-link i {
    font-size: var(--text-sm);
  }
}

/* ── Auth Buttons in Nav ── */
.nav-login {
  color: var(--color-primary);
}

.nav-login:hover {
  background: var(--color-primary-tint);
  color: var(--color-primary-hover);
}

.nav-signup {
  background: var(--color-primary);
  color: var(--color-on-primary) !important;
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-6) !important;
  font-weight: var(--weight-semibold);
}

.nav-signup:hover {
  background: var(--color-primary-hover) !important;
  color: var(--color-on-primary) !important;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.nav-signup:active {
  transform: translateY(0);
  box-shadow: none;
}

.nav-signup:focus-visible {
  box-shadow: var(--shadow-focus);
}

@media (min-width: 1024px) {
  .nav-signup {
    padding: var(--space-2) var(--space-5) !important;
    font-size: var(--text-sm) !important;
  }
}

/* ── Logout Link ── */
.nav-logout {
  color: var(--color-error);
}

.nav-logout:hover {
  background: var(--color-error-bg);
  color: var(--color-error-hover);
}

/* ── Dropdown Toggle ── */
.nav-dropdown-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: transparent;
  border: none;
  color: var(--color-text);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  text-align: start;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition:
    background var(--duration-fast) var(--ease-default),
    color var(--duration-fast) var(--ease-default);
}

.nav-dropdown-toggle > span {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-dropdown-toggle:hover,
.nav-dropdown-toggle[aria-expanded="true"] {
  background: var(--color-primary-tint);
  color: var(--color-primary);
}

.nav-dropdown-toggle:focus-visible {
  box-shadow: var(--shadow-focus);
  outline: none;
}

@media (min-width: 1024px) {
  .nav-dropdown-toggle {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
  }
}

/* ── Dropdown Arrow ── */
.dropdown-arrow {
  font-size: var(--text-xs);
  transition: transform var(--duration-normal) var(--ease-default);
  flex-shrink: 0;
}

.nav-dropdown-toggle[aria-expanded="true"] .dropdown-arrow {
  transform: rotate(180deg);
}

.nav-dropdown.show .dropdown-arrow {
  transform: rotate(180deg);
}

/* ── Dropdown Menu ── */
.dropdown-menu {
  display: none;
  position: static;
  padding: 0 var(--space-6) var(--space-2);
  margin: 0;
  list-style: none;
  background: transparent;
  border: none;
  box-shadow: none;
}

/* Mobile: show when toggled */
.nav-dropdown-toggle[aria-expanded="true"] + .dropdown-menu {
  display: block;
}

.nav-dropdown.show .dropdown-menu {
  display: block;
}

@media (min-width: 1024px) {
  .dropdown-menu {
    position: absolute;
    inset-inline-start: 0;
    top: calc(100% + var(--space-2));
    min-width: 220px;
    padding: var(--space-2);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(var(--space-2));
    transition:
      opacity var(--duration-fast) var(--ease-default),
      visibility var(--duration-fast) var(--ease-default),
      transform var(--duration-fast) var(--ease-default);
    display: block;
  }

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

  /* Desktop: also show when toggled via JS or aria-expanded */
  .nav-dropdown-toggle[aria-expanded="true"] + .dropdown-menu,
  .nav-dropdown.show .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

/* ── Dropdown Item ── */
.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-2) var(--space-3);
  background: transparent;
  border: none;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition:
    background var(--duration-fast) var(--ease-default),
    color var(--duration-fast) var(--ease-default);
}

.dropdown-item:hover {
  background: var(--color-primary-tint);
  color: var(--color-primary);
}

.dropdown-item:focus-visible {
  box-shadow: var(--shadow-focus);
  outline: none;
}

.dropdown-item i {
  font-size: var(--text-sm);
  flex-shrink: 0;
}

/* ── Body Lock (mobile menu open) ── */
body.navbar-menu-open {
  overflow: hidden;
}

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
  .navbar-floating,
  .navbar-container,
  .navbar-logo,
  .search-form,
  .search-button,
  .navbar-toggle-icon,
  .dropdown-arrow,
  .dropdown-menu,
  .mobile-close-btn,
  .nav-link,
  .nav-dropdown-toggle,
  .navbar-backdrop {
    transition-duration: 0.01ms !important;
  }

  .navbar-menu {
    transition-duration: 0.01ms !important;
  }
}

/* ── Print ── */
@media print {
  .navbar-floating {
    position: static;
    box-shadow: none;
    border: none;
    border-bottom: 1px solid var(--color-border);
    border-radius: 0;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: white;
  }

  .navbar-toggle,
  .mobile-close-btn,
  .search-form {
    display: none;
  }
}