/* ============================================================================
   MAIN APP HEADER COMPONENT
   Used on: Articles, Categories, Profiles, Search, Dashboard pages
   ============================================================================ */

/* Header Wrapper - positions the island */
.app-header-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  padding: var(--space-4);
  pointer-events: none;
}

/* Header Island Container */
.app-header {
  max-width: 1200px;
  margin: 0 auto;
  background-color: var(--color-bg-elevated);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: var(--transition-all);
  pointer-events: auto;
}

.app-header.scrolled {
  box-shadow: var(--shadow-lg);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  gap: var(--space-6);
}

/* Logo */
.header-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.header-logo img {
  height: 36px;
  width: auto;
  transition: var(--transition-all);
}

.header-logo:hover img {
  opacity: 0.8;
}

/* Main Navigation */
.main-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  display: block;
  padding: var(--space-2) var(--space-4);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  transition: var(--transition-all);
}

.nav-link:hover {
  color: var(--color-text-primary);
  background-color: var(--color-bg-secondary);
  text-decoration: none;
}

.nav-link.active {
  color: var(--color-coral);
  background-color: rgba(255, 127, 80, 0.1);
}

.nav-link:focus-visible {
  outline: 2px solid var(--color-coral);
  outline-offset: 2px;
}

/* Page offset for inner views that need spacing below fixed header */
.page-offset {
  padding-top: 120px;
}

@media (max-width: 768px) {
  .page-offset {
    padding-top: 104px;
  }
}

/* Right Section */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-shrink: 0;
}

/* Language Switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: var(--transition-all);
}

.lang-switcher:hover {
  background: var(--color-bg-tertiary);
  border-color: var(--color-border-default);
}

.lang-switcher svg {
  width: 16px;
  height: 16px;
}

.lang-switcher span {
  font-weight: var(--font-weight-medium);
}

/* Auth Buttons (Guest State) */
.auth-buttons {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.btn-login {
  padding: var(--space-2) var(--space-4);
  color: var(--color-text-primary);
  background: transparent;
  border: none;
  font-family: var(--font-family-body);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: var(--transition-all);
  text-decoration: none;
}

.btn-login:hover {
  background: var(--color-bg-secondary);
  text-decoration: none;
}

.btn-register {
  padding: var(--space-2) var(--space-4);
  background-color: var(--color-coral);
  color: white;
  border: none;
  font-family: var(--font-family-body);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-all);
  text-decoration: none;
}

.btn-register:hover {
  background-color: var(--color-coral-dark);
  transform: translateY(-1px);
  text-decoration: none;
}

/* User Dropdown (Authenticated State) */
.user-dropdown {
  position: relative;
}

.user-dropdown-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition-all);
}

.user-dropdown-trigger:hover {
  background: var(--color-bg-tertiary);
  border-color: var(--color-border-default);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--color-coral);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
}

.user-name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.dropdown-arrow {
  width: 16px;
  height: 16px;
  color: var(--color-text-tertiary);
  transition: transform var(--transition-fast);
}

.user-dropdown.open .dropdown-arrow {
  transform: rotate(180deg);
}

.user-dropdown-menu {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  min-width: 200px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: var(--transition-all);
  z-index: var(--z-dropdown);
}

[dir="rtl"] .user-dropdown-menu {
  left: auto;
  right: 0;
}

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

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: var(--transition-colors);
}

.dropdown-item:hover {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  text-decoration: none;
}

.dropdown-item:first-child {
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.dropdown-item:last-child {
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.dropdown-item svg {
  width: 18px;
  height: 18px;
}

.dropdown-divider {
  height: 1px;
  background: var(--color-border-subtle);
  margin: var(--space-2) 0;
}

.dropdown-item.logout {
  color: var(--color-error);
}

.dropdown-item.logout:hover {
  background: var(--color-error-light);
  color: var(--color-error-dark);
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: var(--transition-all);
}

.mobile-menu-btn.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.open span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Overlay */
.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
  z-index: calc(var(--z-sticky) + 1);
}

.mobile-overlay.open {
  opacity: 1;
  visibility: visible;
}

/* Mobile Navigation Panel */
.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 85%;
  max-width: 320px;
  height: 100vh;
  background: var(--color-bg-elevated);
  box-shadow: var(--shadow-2xl);
  z-index: calc(var(--z-sticky) + 2);
  transition: right var(--duration-normal) var(--ease-flow);
  overflow-y: auto;
}

[dir="ltr"] .mobile-nav {
  right: auto;
  left: -100%;
  transition: left var(--duration-normal) var(--ease-flow);
}

.mobile-nav.open {
  right: 0;
}

[dir="ltr"] .mobile-nav.open {
  right: auto;
  left: 0;
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-border-subtle);
}

.mobile-nav-close {
  padding: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-secondary);
}

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

.mobile-nav-list {
  list-style: none;
  margin: 0;
  padding: var(--space-4);
}

.mobile-nav-list .nav-link {
  display: block;
  padding: var(--space-4);
  font-size: var(--font-size-lg);
  border-radius: var(--radius-md);
}

.mobile-nav-divider {
  height: 1px;
  background: var(--color-border-subtle);
  margin: var(--space-4) var(--space-4);
}

.mobile-auth-section {
  padding: 0 var(--space-4) var(--space-4);
}

.mobile-auth-section .btn-login,
.mobile-auth-section .btn-register {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-2);
  text-align: center;
  display: block;
}

.mobile-lang-switcher {
  width: 100%;
  justify-content: center;
  margin-top: var(--space-4);
}

/* Responsive */
@media (max-width: 768px) {
  .main-nav {
    display: none;
  }

  .auth-buttons {
    display: none;
  }

  .lang-switcher {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }
}

/* Body offset for fixed header */
body.has-app-header {
  padding-top: 72px;
}

/* Hide states by default */
.guest-state {
  display: flex;
}

.auth-state {
  display: none;
}

/* Authenticated state */
.app-header.authenticated .guest-state {
  display: none;
}

.app-header.authenticated .auth-state {
  display: flex;
}