/**
 * Anadolu Üniversitesi Kütüphane - Header Styles
 * Header, navigasyon ve mobil menü stilleri
 */

/* Header Container */
.main-header {
  background-color: var(--primary-color);
  padding: 0;
  margin: 0;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1020;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  will-change: transform;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  height: var(--header-height);
}

/* Header States */
.sticky-header {
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.header-hide {
  transform: translateY(-100%);
  box-shadow: none;
}

.header-visible {
  transform: translateY(0);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.main-header .container {
  height: 100%;
  display: flex;
  align-items: center;
  max-width: var(--container-max-width);
  width: 100%;
  padding: 0 15px;
}

.main-header .navbar {
  height: 100%;
  padding: 0;
  width: 100%;
}

.main-header .navbar .container-fluid {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0;
}

/* Logo */
.navbar-brand {
  padding: 0.25rem 0;
  margin-right: 1rem;
  height: 60px;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-img {
  height: 50px;
  width: auto;
  max-width: 200px;
  object-fit: contain;
  transition: opacity 0.3s ease;
}

/* Navbar Toggle (Mobile) */
.navbar-toggler {
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 0.375rem 0.75rem;
  background: transparent;
  border-radius: 0.375rem;
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 0.25rem rgba(255, 255, 255, 0.25);
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.8%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='m4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  width: 1.5em;
  height: 1.5em;
}

/* Navigation */
.navbar-nav {
  height: 100%;
  display: flex;
  align-items: center;
  margin-left: auto;
}

.navbar-nav .nav-item {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.navbar-nav .nav-link {
  color: var(--white);
  font-weight: var(--font-weight-medium);
  font-size: var(--fs-5);
  padding: 1rem;
  transition: var(--transition);
  display: flex;
  align-items: center;
  height: 100%;
  white-space: nowrap;
}

.navbar-nav .nav-link i {
  margin-right: 5px;
  transition: color 0.3s ease;
}

/* Hover Kuralları - TÜM SAYFALARDA */
.navbar-nav .nav-link {
  color: var(--white) !important;
  background-color: transparent !important;
}

.navbar-nav .nav-link:hover {
  color: var(--white) !important;
  background-color: transparent !important;
}

.navbar-nav .nav-link:focus,
.navbar-nav .nav-link:active,
.navbar-nav .nav-link:visited {
  color: var(--white) !important;
  background-color: transparent !important;
  outline: none !important;
  box-shadow: none !important;
}

/* Hover: Tüm menü ikonları sarı - TÜM SAYFALARDA */
.navbar-nav .nav-item:hover .nav-link i,
.navbar-nav .dropdown:hover .nav-link i {
  color: var(--accent-color);
}

/* Active: Hover ile aynı stiller - SADECE İÇ SAYFALARDA */
body[data-page-type="inner"] .navbar-nav .nav-item.active .nav-link i,
body[data-page-type="inner"] .navbar-nav .dropdown.active .nav-link i {
  color: var(--accent-color);
}

body[data-page-type="inner"] .navbar-nav .nav-item.active .nav-link,
body[data-page-type="inner"] .navbar-nav .dropdown.active .nav-link {
  font-weight: var(--font-weight-semibold);
  color: var(--white) !important;
}


/* Dropdown */
.dropdown-toggle::after {
  display: none;
}

.rotate-icon {
  transition: transform 0.3s ease, color 0.3s ease;
  display: inline-block;
  margin-left: 6px;
  font-size: 0.75rem;
  color: var(--white);
}

.navbar-nav .dropdown:hover .rotate-icon {
  transform: translateY(-2px) rotate(180deg);
  color: var(--white);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.dropdown-menu {
  margin-top: 0 !important;
  border-radius: 0 0 0.25rem 0.25rem;
  border: none !important;
  background-color: var(--primary-color) !important;
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
  display: none !important;
  padding: 0.5rem 0;
  min-width: 16rem;
  position: absolute !important;
  left: auto !important;
  right: 0 !important;
  top: 100% !important;
  z-index: 1025 !important;
  overflow: hidden;
  animation: fadeIn 0.3s ease;
}

.navbar-nav .dropdown:hover .dropdown-menu {
  display: block !important;
}

.wide-dropdown {
  min-width: 22rem;
}

.dropdown-divider {
  height: 1px;
  margin: 0;
  overflow: hidden;
  background-color: rgba(255, 255, 255, 0.1);
  border: none;
}

.dropdown-item {
  color: var(--white) !important;
  background-color: transparent !important;
  padding: 0.75rem 1rem;
  transition: all 0.25s ease;
  position: relative;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
  font-size: var(--fs-4);
  display: flex;
  align-items: center;
  border: none !important;
  outline: none !important;
}

.dropdown-item:focus,
.dropdown-item:active {
  color: var(--white) !important;
  background-color: rgba(255, 255, 255, 0.1) !important;
  outline: none !important;
  box-shadow: none !important;
}

.dropdown-item i {
  margin-right: 8px;
  font-size: 1rem;
  width: 20px;
  text-align: center;
  opacity: 0.9;
}

.dropdown-item:hover {
  background-color: rgba(255, 255, 255, 0.1) !important;
  color: var(--white) !important;
  transform: translateX(5px);
}

.dropdown-item:hover i {
  color: var(--accent-color) !important;
}

/* Dropdown item active - SADECE İÇ SAYFALARDA */
body[data-page-type="inner"] .dropdown-item.active {
  font-weight: var(--font-weight-semibold);
  background-color: rgba(255, 255, 255, 0.15);
  color: var(--white);
}

body[data-page-type="inner"] .dropdown-item.active i {
  color: var(--accent-color);
}

/* Dil menüsü - Seçili dil aktif */
.language-switcher .dropdown-item.active {
  font-weight: var(--font-weight-semibold);
  background-color: rgba(255, 255, 255, 0.1);
}

.language-switcher .dropdown-item.active .language-name {
  color: var(--accent-color);
}

/* Bayrak ikonları - Emoji */
.language-flag-btn {
  font-size: 1.2rem;
  margin-right: 0.5rem;
  display: inline-block;
  line-height: 1;
}

.language-flag {
  font-size: 1.2rem;
  margin-right: 0.5rem;
  display: inline-block;
  min-width: 24px;
  text-align: center;
}

.language-name {
  display: inline-block;
}

/* Bayrak ikonları - SVG */
.language-flag-icon {
  width: 20px;
  height: 20px;
  margin-right: 0.5rem;
  display: inline-block;
  vertical-align: middle;
  border-radius: 3px;
  object-fit: cover;
}

.language-flag-icon-dropdown {
  width: 24px;
  height: 24px;
  margin-right: 0.75rem;
  display: inline-block;
  vertical-align: middle;
  border-radius: 3px;
  object-fit: cover;
}

/* Mobile bayrak ikonları */
.language-flag-icon-mobile {
  width: 20px;
  height: 20px;
  margin-right: 0.5rem;
  display: inline-block;
  vertical-align: middle;
  border-radius: 3px;
  object-fit: cover;
}

.language-flag-icon-mobile-menu {
  width: 20px;
  height: 20px;
  margin-right: 0.75rem;
  display: inline-block;
  vertical-align: middle;
  border-radius: 3px;
  object-fit: cover;
}

.mobile-flag-emoji {
  font-size: 1.2rem;
  margin-right: 0.75rem;
  display: inline-block;
}


/* Dark Theme */
html[data-theme="dark"] .main-header {
  background-color: var(--primary-dark);
  border-bottom: 1px solid var(--primary-color);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

html[data-theme="dark"] .navbar-nav .nav-link {
  color: white;
}

html[data-theme="dark"] .navbar-nav .nav-link:hover {
  color: white;
}

/* ========================================
   MOBILE MENU STYLES
   ======================================== */

/* Mobile Menu Button (Hamburger) */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 22px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.mobile-menu-btn span {
  width: 100%;
  height: 3px;
  background-color: var(--white);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 100;
}

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

/* Mobile Menu Panel */
.mobile-menu-panel {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100vh;
  background-color: var(--primary-color);
  box-shadow: -2px 0 10px rgba(0, 0, 0, 0.3);
  transition: right 0.3s ease;
  z-index: 2101;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.mobile-menu-panel.active {
  right: 0;
}

/* Mobile Menu Header */
.mobile-menu-header {
  position: sticky;
  top: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background-color: var(--primary-color);
  z-index: 10;
  flex-shrink: 0;
}

.mobile-menu-logo {
  height: 40px;
  width: auto;
}

.mobile-menu-close {
  background: transparent;
  border: none;
  color: var(--white);
  font-size: var(--fs-10);
  cursor: pointer;
  padding: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Mobile Menu Content */
.mobile-menu-content {
  padding: 10px 0;
  overflow-y: auto;
  overflow-x: hidden;
  flex: 1;
}

.mobile-menu-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-menu-link {
  display: flex;
  align-items: center;
  padding: 15px 20px;
  color: var(--white);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--fs-7);
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.mobile-menu-link:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--white);
}

.mobile-menu-link i:first-child {
  margin-right: 12px;
  font-size: var(--fs-8);
  width: 24px;
  text-align: center;
}

.mobile-menu-arrow {
  margin-left: auto;
  transition: transform 0.3s ease;
  font-size: var(--fs-5);
}

.mobile-menu-arrow.rotated {
  transform: rotate(180deg);
}

/* Mobile Submenu */
.mobile-submenu {
  max-height: 0;
  overflow: hidden;
  background-color: rgba(0, 0, 0, 0.15);
  transition: max-height 0.3s ease;
}

.mobile-submenu.active {
  max-height: 500px;
}

.mobile-submenu-link {
  display: flex;
  align-items: center;
  padding: 12px 20px 12px 56px;
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-size: var(--fs-6);
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.mobile-submenu-link i {
  margin-right: 8px;
  font-size: var(--fs-7);
  width: 20px;
  text-align: center;
  opacity: 0.9;
  transition: color 0.3s ease;
}

.mobile-submenu-link:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--white);
  transform: translateX(5px);
}

.mobile-submenu-link:hover i {
  color: var(--accent-color);
}

/* Mobile Menu Active States - İç sayfalarda */
body[data-page-type="inner"] .mobile-menu-link.active {
  background-color: rgba(255, 255, 255, 0.15);
  font-weight: var(--font-weight-semibold);
}

body[data-page-type="inner"] .mobile-menu-link.active i:first-child {
  color: var(--accent-color);
}

/* Mobile dropdown parent active */
body[data-page-type="inner"] .mobile-menu-item.active > .mobile-menu-link i:first-child {
  color: var(--accent-color);
}

body[data-page-type="inner"] .mobile-menu-item.active > .mobile-menu-link {
  font-weight: var(--font-weight-semibold);
}

/* Mobile submenu item active */
body[data-page-type="inner"] .mobile-submenu-link.active {
  background-color: rgba(255, 255, 255, 0.15);
  font-weight: var(--font-weight-semibold);
  color: var(--white);
}

body[data-page-type="inner"] .mobile-submenu-link.active i {
  color: var(--accent-color);
}

/* Mobile - Hide desktop menu, show mobile button */
@media (max-width: 991.98px) {
  .navbar-nav {
    display: none !important;
  }

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

/* ============================================
   Tema Değiştirici (açık/koyu)
   İkon görünürlüğü yalnızca CSS ile yönetilir; JS inline style yazmaz,
   böylece header render sırası ile tema uygulama sırası birbirine bağlı olmaz.
   ============================================ */

.theme-switcher-btn,
.mobile-theme-switcher-btn {
  background: transparent;
  border: none;
  cursor: pointer;
}

/* Desktop */
.theme-switcher-item .theme-switcher-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 0.75rem;
  font-size: var(--fs-8);
  line-height: 1;
  color: inherit;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.theme-switcher-item .theme-switcher-btn:hover {
  background-color: var(--bg-hover);
  color: var(--primary-color);
}

.theme-switcher-item .theme-switcher-btn:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Mobil menü içindeki düğme — .mobile-menu-link görünümüyle aynı */
.mobile-theme-switcher-btn {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 15px 20px;
  color: var(--white);
  font-weight: 500;
  font-size: var(--fs-7);
  text-align: left;
}

.mobile-theme-switcher-btn:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.mobile-theme-switcher-btn i:first-child,
.mobile-theme-switcher-btn i {
  margin-right: 12px;
  font-size: 1.1rem;
  width: 24px;
  text-align: center;
}

/* İkon değişimi: açık temada ay, koyu temada güneş */
.theme-switcher-btn .dark-icon,
.mobile-theme-switcher-btn .dark-icon {
  display: none;
}

html[data-theme="dark"] .theme-switcher-btn .light-icon,
html[data-theme="dark"] .mobile-theme-switcher-btn .light-icon {
  display: none;
}

html[data-theme="dark"] .theme-switcher-btn .dark-icon,
html[data-theme="dark"] .mobile-theme-switcher-btn .dark-icon {
  display: inline-block;
}

html[data-theme="dark"] .theme-switcher-item .theme-switcher-btn:hover {
  background-color: var(--bg-hover);
  color: var(--accent-color);
}