/* admin/css/layout.css */

.app-container {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: 260px;
  background-color: var(--surface-color);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), width var(--transition-normal);
  z-index: 100;
  flex-shrink: 0;
}

.sidebar-header {
  height: 70px;
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.sidebar-logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-md) 0;
}

.nav-item {
  display: flex;
  align-items: center;
  padding: 12px var(--spacing-lg);
  color: var(--text-secondary);
  font-weight: 500;
  transition: all var(--transition-fast);
  gap: 12px;
  position: relative;
}

.nav-item i {
  font-size: 18px;
  width: 20px;
  text-align: center;
}

.nav-item:hover {
  background-color: var(--brand-primary-light);
  color: var(--brand-primary);
}

.nav-item.active {
  color: var(--brand-primary);
  background-color: var(--brand-primary-light);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background-color: var(--brand-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* Main Content Area */
.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0; /* предотвращает переполнение flex */
}

/* Header */
.top-header {
  height: 70px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-lg);
  z-index: 50;
  flex-shrink: 0;
}

.header-left, .header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.sidebar-toggle {
  display: none; /* Показывать только на мобильных */
  font-size: 20px;
  color: var(--text-secondary);
  padding: var(--spacing-xs);
}

.header-search {
  position: relative;
  width: 300px;
}

.header-search i {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-placeholder);
}

.header-search input {
  width: 100%;
  padding: 10px 16px 10px 40px;
  background-color: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition-fast);
}

.header-search input:focus {
  border-color: var(--brand-primary);
}

.icon-button {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-round);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 18px;
  transition: all var(--transition-fast);
}

.icon-button:hover {
  background-color: var(--bg-color);
  color: var(--brand-primary);
}

.admin-profile {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-left: var(--spacing-sm);
  cursor: pointer;
}

.admin-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-round);
  background-color: var(--brand-primary-light);
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  overflow: hidden;
}

.admin-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Viewport Info */
.page-content {
  flex: 1;
  padding: var(--spacing-lg);
  overflow-y: auto;
  position: relative;
}

/* Страница контента */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: var(--spacing-lg);
}

/* Adaptive (Медиазапросы) */
@media (max-width: 992px) {
  .app-container.sidebar-open .sidebar {
    transform: translateX(0);
  }
  
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    transform: translateX(-100%);
    box-shadow: var(--shadow-xl);
  }
  
  .sidebar-toggle {
    display: block;
  }

  .header-search {
    display: none; /* Скрыть поиск на планшетах/мобилках из хедера */
  }
}

/* Overlay для мобильных (затемнение фона) */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 90;
  animation: fadeIn 0.2s ease-out forwards;
}

.app-container.sidebar-open .sidebar-overlay {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}