/* ============================================
   ОСНОВНЫЕ СТИЛИ ХЕДЕРА - Premium & Trust
   ============================================ */

.site-header {
  background: var(--bg-primary);
  border-bottom: 2px solid var(--border-color);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: var(--z-fixed);
  transition: all var(--transition-normal);
}

.site-header .container {
  padding: 0 var(--container-padding);
}

/* Шапка: лого и меню всегда в один ряд на мониторах (селектор .site-header чтобы не перебивалось другими .header-content) */
.site-header .header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 0.75rem 0;
  min-height: 70px;
  flex-direction: row;
  flex-wrap: nowrap;
}

.site-header .header-content .logo {
  flex-shrink: 0;
}

.site-header .header-content .main-nav {
  flex: 1 1 auto;
  min-width: 0;
}

/* ============================================
   ЛОГОТИП
   ============================================ */

.logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: all var(--transition-normal) cubic-bezier(0.34, 1.56, 0.64, 1);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-lg);
}

.logo-link:hover {
  background: rgba(42, 75, 124, 0.06);
  transform: translateY(-3px) scale(1.05);
  -webkit-backdrop-filter: blur(5px);
  backdrop-filter: blur(5px);
}

.logo-img {
  height: 44px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  animation: logoReveal 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) both;
  transition: transform var(--transition-normal);
}

/* Два варианта логотипа: широкий (desktop) и эмблема (mobile) */
.logo-img--emblem {
  display: none;
  max-width: 44px;
}

@media (max-width: 768px) {
  .logo-img--wide {
    display: none;
  }
  .logo-img--emblem {
    display: block;
    height: 42px;
    width: 42px;
  }
  .logo-link {
    padding: 0.4rem 0.6rem;
  }
}

.logo-link:hover .logo-img {
  transform: rotate(-2deg) scale(1.08);
}

@keyframes logoReveal {
  0% {
    opacity: 0;
    transform: scale(0.85) translateY(-8px);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* ============================================
   ОСНОВНАЯ НАВИГАЦИЯ
   ============================================ */

.main-nav {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: nowrap;
}

/* На десктопах: лого у левого края, нав-список по центру шапки */
@media (min-width: 992px) {
  .site-header .container {
    max-width: 100%;
  }

  .site-header .header-content {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    justify-items: center;
  }

  .site-header .header-content .logo {
    justify-self: start;
    grid-column: 1;
  }

  .site-header .header-content .main-nav {
    grid-column: 2;
    justify-self: center;
    flex: none;
    min-width: 0;
  }

  .site-header .header-content .mobile-menu-toggle {
    grid-column: 3;
    justify-self: end;
  }
}

.nav-item {
  position: relative;
  display: flex;
  align-items: center;
}

/* ============================================
   НАВИГАЦИОННЫЕ ССЫЛКИ
   ============================================ */

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  white-space: nowrap;
}

.nav-link i {
  font-size: 1.1rem;
  transition: all var(--transition-normal);
}

.nav-link:hover {
  color: var(--primary-color);
  background: rgba(42, 75, 124, 0.08);
  transform: translateY(-2px);
}

.nav-link:hover i {
  transform: scale(1.15);
}

.nav-link.active {
  color: var(--primary-color);
  background: rgba(42, 75, 124, 0.12);
  font-weight: 600;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 3px;
  background: var(--primary-color);
  border-radius: 2px;
}

/* ============================================
   КНОПКА РЕГИСТРАЦИИ - Премиальный стиль
   ============================================ */

.btn-register {
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  padding: 0.625rem 1.25rem !important;
  font-weight: 600;
  box-shadow: var(--shadow-colored);
  transition: all var(--transition-normal);
  color: var(--text-white);
  border: none;
  cursor: pointer;
}

.btn-register:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(42, 75, 124, 0.35);
  background: linear-gradient(
    135deg,
    var(--primary-dark) 0%,
    var(--primary-color) 100%
  );
}

.btn-register:active {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

/* ============================================
   СЧЕТЧИК УВЕДОМЛЕНИЙ
   ============================================ */

.nav-icon-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.notification-badge {
  position: absolute;
  top: -8px;
  right: -8px;
  background: var(--gradient-danger);
  color: var(--text-white);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 10px;
  min-width: 20px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

/* ============================================
   ДАТА И ВРЕМЯ
   ============================================ */

.header-datetime {
  display: flex;
  align-items: center;
  margin-left: auto;
  padding-left: 2rem;
  border-left: 2px solid var(--border-color);
  -webkit-backdrop-filter: blur(5px);
  backdrop-filter: blur(5px);
}

.datetime-display {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
}

.datetime-display i {
  color: var(--primary-color);
  font-size: 1.1rem;
}

/* ============================================
   МОБИЛЬНОЕ МЕНЮ
   ============================================ */

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: var(--z-popover);
  margin-left: auto;
}

.hamburger-line {
  width: 24px;
  height: 3px;
  background: var(--primary-color);
  border-radius: 2px;
  transition: all var(--transition-normal);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(10px, 10px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* ============================================
   ADMIN LINK СТИЛЬ
   ============================================ */

.admin-link {
  color: var(--accent-color) !important;
}

.admin-link i {
  color: var(--accent-color);
}

.admin-link:hover {
  background: rgba(212, 175, 55, 0.1) !important;
}

/* ============================================
   USER MENU СТИЛЬ
   ============================================ */

.user-menu {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 1rem !important;
}

.user-menu img {
  margin: 0 !important;
}

.user-menu span {
  font-weight: 500;
  color: var(--text-primary);
}

.user-menu:hover {
  background-color: var(--bg-secondary);
  border-radius: var(--radius-md);
}

/* ============================================
   УЛУЧШЕННЫЕ СТИЛИ DROPDOWN МЕНЮ
   ============================================ */

.nav-item.dropdown {
  position: relative;
}

.dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  position: relative;
}

.dropdown-toggle::after {
  content: none;
}

.dropdown-menu {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 0.5rem 0;
  min-width: 280px;
  animation: slideDown 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  margin-top: 0.5rem !important;
}

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

.dropdown-menu.show {
  display: block;
  opacity: 1;
  visibility: visible;
}

.dropdown-menu li {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

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

.dropdown-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.5rem 0.875rem 3rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all var(--transition-fast) cubic-bezier(0.4, 0, 0.2, 1);
  border-left: none;
  border-radius: 0;
  position: relative;
  white-space: nowrap;
}

.dropdown-link i {
  font-size: 1rem;
  color: var(--primary-color);
  transition: all var(--transition-fast);
  min-width: 1.25rem;
  text-align: center;
}
.dropdown-link:hover {
  background: rgba(42, 75, 124, 0.08);
  color: var(--primary-color);
  border-left: none;
  padding-left: 3rem;
}

.dropdown-link:hover i {
  background: rgba(42, 75, 124, 0.05);
  padding: 0;
  margin: 0;
  min-width: auto;
  animation: none;
}

/* Выделенный пункт «Добавить вещь» вверху меню */
.dropdown-link--primary {
  background: rgba(var(--primary-rgb), 0.1);
  color: var(--primary-color);
  font-weight: 600;
}

.dropdown-link--primary i {
  color: var(--primary-color);
}

.dropdown-link--primary:hover {
  background: rgba(var(--primary-rgb), 0.18);
  color: var(--primary-hover);
}

.dropdown-link--primary:hover i {
  color: var(--primary-hover);
}

.dropdown-arrow {
  margin-left: auto;
  font-size: 0.65rem;
  color: var(--text-muted);
}

.dropdown-divider {
  margin: 0.5rem 1.5rem;
  border: none;
  height: 1px;
  background: var(--border-color);
}

/* ============================================
   АДМИН-МЕНЮ С ГРУППИРОВКОЙ
   ============================================ */

.dropdown-menu--admin {
  min-width: 220px;
  padding: 0.5rem 0;
}

.dropdown-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem 0.375rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  background: transparent;
  border-bottom: 1px solid var(--border-color);
  margin-top: 0.5rem;
}

.dropdown-header:first-child {
  margin-top: 0;
  border-top: none;
}

.dropdown-header i {
  font-size: 0.65rem;
  opacity: 0.7;
}

.dropdown-menu--admin .dropdown-link {
  padding: 0.625rem 1.25rem 0.625rem 2.25rem;
  font-size: 0.875rem;
}

.dropdown-menu--admin .dropdown-link i {
  font-size: 0.875rem;
  min-width: 1rem;
}

@media (prefers-color-scheme: dark) {
  .dropdown-header {
    color: rgba(255, 255, 255, 0.5);
    border-bottom-color: rgba(255, 255, 255, 0.1);
  }
}

/* ============================================
   ФОКУС И ДОСТУПНОСТЬ DROPDOWN
   ============================================ */

.dropdown-link:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: -2px;
  background: rgba(42, 75, 124, 0.1);
}

.dropdown-toggle:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* ============================================
   УМЕНЬШЕНИЕ АНИМАЦИЙ ДЛЯ DROPDOWN
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  .dropdown-menu {
    animation: none;
  }

  .dropdown-link,
  .dropdown-arrow {
    transition: none;
  }

  .logo-img {
    animation: none;
  }
}

/* ============================================
   АВАТАР В ХЕДЕРЕ - Премиальный стиль
   ============================================ */

.user-avatar-header {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary-color);
  transition: all var(--transition-normal);
  display: block;
}

.user-avatar-header:hover {
  transform: scale(1.1);
  border-color: var(--accent-color);
  box-shadow: 0 4px 12px rgba(42, 75, 124, 0.3);
}

/* ============================================
   МОБИЛЬНОЕ МЕНЮ — Фон с пиктограммами
   ============================================ */

/* Слой иконок в мобильном меню — скрыт на десктопе */
.mobile-nav-icons-layer {
  display: none;
  pointer-events: none;
}

.mobile-nav-scrim {
  display: none;
}

/* ============================================
   АДАПТИВНОСТЬ - Планшеты
   ============================================ */

@media (max-width: 768px) {
  /* Показываем кнопку меню */
  .mobile-menu-toggle {
    display: flex;
  }

  /* На мобильных отключаем entrance-анимацию, чтобы меню не было видно при загрузке */
  .main-nav.animate__animated {
    animation: none !important;
  }

  .main-nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    bottom: 0;
    background: transparent;
    flex-direction: column;
    overflow-y: auto;
    overflow-x: hidden;
    transform: translateX(-100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: var(--z-fixed);
    padding: 0;
    justify-content: flex-start;
    width: 100%;
  }

  .main-nav.show {
    transform: translateX(0);
  }

  /* Фон: пиктограммы как в окне, пропорционально меньше */
  .mobile-nav-icons-layer {
    display: block;
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: 0;
  }

  .mobile-nav-icons-layer i {
    position: absolute;
    font-size: clamp(0.6rem, 2.8vw, 1.2rem);
    color: #a8a8a8;
    opacity: 0.12;
    transform: translate(-50%, -50%);
    font-family: "Font Awesome 6 Pro", "Font Awesome 5 Pro", "Font Awesome 6 Free", var(--font-primary);
  }

  .mobile-nav-icons-layer i:nth-child(4n) { opacity: 0.08; }
  .mobile-nav-icons-layer i:nth-child(4n + 2) { opacity: 0.16; }
  .mobile-nav-icons-layer i:nth-child(5n) { transform: translate(-50%, -50%) rotate(-5deg); }
  .mobile-nav-icons-layer i:nth-child(5n + 3) { transform: translate(-50%, -50%) rotate(4deg); }
  .mobile-nav-icons-layer i:nth-child(7n + 1) { transform: translate(-50%, -50%) rotate(2deg); }

  /* Полупрозрачный слой для читаемости навигации; клик по нему закрывает меню */
  .mobile-nav-scrim {
    display: block;
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.92);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    z-index: 1;
    cursor: pointer;
  }

  .nav-list {
    flex-direction: column;
    width: 100%;
    gap: 0.25rem;
    padding: 1rem 0.75rem 2rem;
    position: relative;
    z-index: 2;
  }

  .nav-item {
    width: 100%;
  }

  .nav-link {
    width: 100%;
    padding: 0.875rem 1.25rem;
    border-radius: var(--radius-lg);
    justify-content: flex-start;
    margin-bottom: 0.25rem;
    min-height: 48px;
    align-items: center;
    transition: background var(--transition-fast), color var(--transition-fast);
  }

  .nav-link:hover {
    background: rgba(42, 75, 124, 0.08);
  }

  .nav-link.active::after {
    display: none;
  }

  .nav-link.active {
    background: rgba(42, 75, 124, 0.12);
    border-left: 4px solid var(--primary-color);
    padding-left: calc(1.25rem - 4px);
  }

  .header-datetime {
    display: none;
  }

  .btn-register {
    width: calc(100% - 1.5rem);
    margin: 0.75rem;
    padding: 0.875rem 1.5rem !important;
    text-align: center;
    justify-content: center;
  }

  .dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    background: rgba(255, 255, 255, 0.6);
    border-radius: var(--radius-md);
    min-width: auto;
    padding: 0.375rem 0;
    margin: 0.25rem 0 0.5rem 1rem;
  }

  .dropdown-link,
  .dropdown-menu .dropdown-item {
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-height: 44px;
  }

  .dropdown-link i,
  .dropdown-menu .dropdown-item i {
    font-size: 0.9rem;
    min-width: 1rem;
  }

  .dropdown-divider {
    margin: 0.375rem 1rem;
  }

  .dropdown-arrow {
    font-size: 0.6rem;
  }

  /* Админ-меню на мобильных */
  .dropdown-header {
    padding: 0.5rem 1rem 0.25rem;
    font-size: 0.65rem;
    margin-top: 0.375rem;
  }

  .dropdown-menu--admin .dropdown-link {
    padding: 0.625rem 1rem 0.625rem 2rem;
    font-size: 0.85rem;
    min-height: 40px;
  }
}

/* ============================================
   АДАПТИВНОСТЬ - Мобильные устройства
   ============================================ */

@media (max-width: 480px) {
  .site-header .header-content {
    gap: 1rem;
    min-height: 60px;
  }

  .logo-img {
    height: 36px;
    max-width: 140px;
  }

  .logo-link {
    padding: 0.375rem 0.75rem;
  }

  .mobile-menu-toggle {
    padding: 0.25rem;
  }

  .hamburger-line {
    width: 20px;
    height: 2.5px;
  }

  .nav-link {
    padding: 0.875rem 1.25rem;
    font-size: 0.9rem;
  }

  .btn-register {
    margin: 0.75rem;
    padding: 0.625rem 1rem !important;
    font-size: 0.9rem;
  }

  .header-datetime {
    display: none;
  }

  .user-avatar-header {
    width: 36px;
    height: 36px;
  }

  .datetime-display {
    font-size: 0.85rem;
  }
}

/* ============================================
   ТЕМНАЯ ТЕМА - Поддержка
   ============================================ */

@media (prefers-color-scheme: dark) {
  .site-header {
    background: var(--bg-dark);
    border-bottom-color: rgba(255, 255, 255, 0.1);
  }

  .main-nav {
    background: transparent;
  }

  @media (max-width: 768px) {
    .mobile-nav-scrim {
      background: rgba(33, 33, 33, 0.94);
    }

    .mobile-nav-icons-layer i {
      color: #888;
      opacity: 0.1;
    }

    .dropdown-menu {
      background: rgba(0, 0, 0, 0.2);
    }
  }

  .dropdown-menu {
    background: var(--bg-dark);
    border-color: rgba(255, 255, 255, 0.1);
  }

  .nav-link {
    color: rgba(255, 255, 255, 0.85);
  }

  .nav-link:hover {
    background: rgba(42, 75, 124, 0.15);
  }

  .dropdown-link {
    color: rgba(255, 255, 255, 0.85);
  }

  .dropdown-link:hover {
    background: rgba(42, 75, 124, 0.15);
  }

  .dropdown-link--primary {
    background: rgba(42, 75, 124, 0.2);
    color: var(--accent-light);
  }

  .dropdown-link--primary:hover {
    background: rgba(42, 75, 124, 0.3);
    color: var(--accent-color);
  }

  .user-menu span {
    color: rgba(255, 255, 255, 0.9);
  }
}

/* ============================================
   ФИНАЛЬНЫЕ ОПТИМИЗАЦИИ
   ============================================ */

/* Единая система переходов */
.nav-link,
.dropdown-link,
.btn-register,
.logo-link {
  transition: all var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
}

/* Правильная иерархия z-index */
.site-header {
  z-index: var(--z-fixed);
}

.mobile-menu-toggle {
  z-index: var(--z-popover);
}

.dropdown-menu.show {
  z-index: var(--z-dropdown);
}

/* Убираем дефолтные стили для кнопок */
.btn-register {
  font-family: var(--font-secondary);
  letter-spacing: 0.025em;
}

/* Улучшенная доступность */
*:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}