/* ============================================
   ELEMENTHA - Header Styles
   ============================================ */

.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  height: var(--header-height);
  background: rgba(248, 250, 252, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--clr-border);
  z-index: var(--z-header);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

[data-theme="dark"] .site-header {
  background: rgba(15, 23, 42, 0.85);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header__inner {
  display: flex;
  align-items: center;
  height: 100%;
  gap: var(--space-4);
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
  margin-left: auto;
}

.site-logo__icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
  font-weight: 800;
  box-shadow: var(--shadow-primary);
}

.site-logo__text {
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--clr-text);
  letter-spacing: -0.02em;
}

.site-logo__text span {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Main Navigation */
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-inline: auto;
}

.site-nav .menu {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.site-nav .menu-item {
  position: relative;
}

.site-nav .menu-item > a {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--clr-text-2);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.site-nav .menu-item > a:hover,
.site-nav .menu-item.current-menu-item > a {
  color: var(--clr-primary);
  background: var(--clr-primary-light);
}

/* Mega Menu */
.site-nav .menu-item.has-mega-menu {
  position: static;
}

.site-nav .menu-item.has-mega-menu > a::after {
  content: '⌄';
  font-size: 12px;
  margin-right: -2px;
  transition: transform var(--transition-fast);
}

.site-nav .menu-item.has-mega-menu:hover > a::after {
  transform: rotate(180deg);
}

.mega-menu {
  position: absolute;
  top: calc(100% + var(--space-2));
  right: 50%;
  transform: translateX(50%);
  width: 720px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: var(--space-6);
  opacity: 0;
  visibility: hidden;
  transform: translateX(50%) translateY(10px);
  transition: all var(--transition-base);
  z-index: var(--z-mega);
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-6);
}

.mega-menu::before {
  content: '';
  position: absolute;
  top: -6px;
  right: 50%;
  transform: translateX(50%);
  width: 12px;
  height: 12px;
  background: var(--clr-surface);
  border-right: 1px solid var(--clr-border);
  border-top: 1px solid var(--clr-border);
  transform: translateX(50%) rotate(-45deg);
}

.site-nav .menu-item.has-mega-menu:hover .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(50%) translateY(0);
}

.mega-menu__featured {
  background: var(--gradient-card);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.mega-menu__featured-label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--clr-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.mega-menu__featured-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--clr-text);
  line-height: 1.4;
}

.mega-menu__featured-desc {
  font-size: var(--font-size-sm);
  color: var(--clr-text-2);
  line-height: 1.6;
}

.mega-menu__cats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
}

.mega-menu__cat-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--transition-fast);
  color: var(--clr-text);
}

.mega-menu__cat-link:hover {
  background: var(--clr-bg-3);
  color: var(--clr-primary);
}

.mega-menu__cat-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.mega-menu__cat-info { display: flex; flex-direction: column; }
.mega-menu__cat-name { font-size: var(--font-size-sm); font-weight: 600; line-height: 1.3; }
.mega-menu__cat-count { font-size: var(--font-size-xs); color: var(--clr-text-3); }

/* Header Search */
.header__search {
  position: relative;
  flex: 0 0 240px;
}

.header__search-input {
  width: 100%;
  height: 38px;
  padding: 0 var(--space-4) 0 var(--space-10);
  background: var(--clr-bg-3);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  color: var(--clr-text);
  transition: all var(--transition-fast);
  direction: rtl;
}

.header__search-input::placeholder { color: var(--clr-text-3); }

.header__search-input:focus {
  outline: none;
  border-color: var(--clr-primary);
  background: var(--clr-surface);
  box-shadow: 0 0 0 3px rgba(109,40,217,0.1);
}

.header__search-icon {
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  color: var(--clr-text-3);
  font-size: 14px;
  pointer-events: none;
}

/* AJAX Search Dropdown */
.search-dropdown {
  position: absolute;
  top: calc(100% + var(--space-2));
  right: 0;
  left: 0;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  z-index: var(--z-overlay);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: all var(--transition-base);
}

.search-dropdown.active {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.search-dropdown__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  text-decoration: none;
  color: var(--clr-text);
  transition: background var(--transition-fast);
  border-bottom: 1px solid var(--clr-border-light);
}

.search-dropdown__item:last-child { border-bottom: none; }
.search-dropdown__item:hover { background: var(--clr-bg-3); }

.search-dropdown__img {
  width: 40px;
  height: 30px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex-shrink: 0;
  background: var(--clr-bg-3);
}

.search-dropdown__info { flex: 1; min-width: 0; }
.search-dropdown__title { font-size: var(--font-size-sm); font-weight: 600; line-height: 1.3; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.search-dropdown__meta  { font-size: var(--font-size-xs); color: var(--clr-text-3); }

.search-dropdown__footer {
  padding: var(--space-3) var(--space-4);
  background: var(--clr-bg-3);
  text-align: center;
}

.search-dropdown__footer a {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--clr-primary);
}

.search-dropdown__no-results {
  padding: var(--space-6);
  text-align: center;
  color: var(--clr-text-3);
  font-size: var(--font-size-sm);
}

/* Header Actions */
.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

/* Dark Mode Toggle */
.theme-toggle {
  width: 40px;
  height: 40px;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  background: var(--clr-surface);
  color: var(--clr-text-2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--clr-primary-light);
  color: var(--clr-primary);
  border-color: var(--clr-primary);
}

.theme-toggle .icon-moon { display: none; }
.theme-toggle .icon-sun  { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }
[data-theme="dark"] .theme-toggle .icon-sun  { display: none; }

/* User Avatar */
.header__user {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--clr-bg-3);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: all var(--transition-fast);
  color: var(--clr-text);
}

.header__user:hover {
  border-color: var(--clr-primary);
  background: var(--clr-primary-light);
}

.header__avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
}

.header__username {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--clr-text);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

.mobile-menu-toggle span {
  width: 22px;
  height: 2px;
  background: var(--clr-text);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-menu-toggle.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.mobile-menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Drawer */
.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 300px;
  height: 100vh;
  background: var(--clr-surface);
  z-index: calc(var(--z-header) + 10);
  padding: var(--space-6);
  transition: right var(--transition-slow);
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
}

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

.mobile-nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  z-index: calc(var(--z-header) + 9);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.mobile-nav__overlay.visible {
  opacity: 1;
  pointer-events: all;
}

.mobile-nav__close {
  position: absolute;
  left: var(--space-4);
  top: var(--space-4);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--clr-bg-3);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 18px;
  color: var(--clr-text-2);
}

.mobile-nav__header {
  margin-bottom: var(--space-6);
  padding-top: var(--space-8);
}

.mobile-nav .menu { flex-direction: column; gap: var(--space-1); }
.mobile-nav .menu-item > a {
  display: flex;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-weight: 500;
  color: var(--clr-text);
  font-size: var(--font-size-base);
}
.mobile-nav .menu-item > a:hover { background: var(--clr-bg-3); color: var(--clr-primary); }

.mobile-nav__actions {
  margin-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* Responsive */
@media (max-width: 1024px) {
  .site-nav { display: none; }
  .header__search { flex: 0 0 200px; }
  .mobile-menu-toggle { display: flex; }
}

@media (max-width: 640px) {
  .header__search { display: none; }
  .header__user .header__username { display: none; }
}