/* Mobile-first catalog styles */
.catalog-container {
  background: var(--light-color);
  min-height: 100vh;
  padding: 0;
}

.catalog-content {
  display: flex;
  flex-direction: column;
  width: 100%;
}

.catalog-header {
  background: var(--shadow-color);
  color: var(--light-color);
  padding: 40px 20px;
  text-align: center;
  position: relative;
  width: 100%;
}

.catalog-header::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--primary-color);
}

.catalog-title {
  font-size: 32px;
  font-weight: 300;
  margin: 0 0 10px 0;
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.catalog-subtitle {
  font-size: 16px;
  margin: 0;
  opacity: 0.8;
  font-weight: 300;
  max-width: 400px;
  margin: 0 auto;
  line-height: 1.5;
}

/* Search functionality */
.catalog-search {
  background: var(--white);
  padding: 25px 20px;
  border-bottom: 1px solid var(--light-gray);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 2px 10px var(--shadow-light);
  width: 100%;
}

.search-input {
  width: 100%;
  padding: 18px 24px;
  border: 2px solid var(--light-gray);
  background: var(--light-color);
  font-size: 16px;
  color: var(--shadow-color);
  outline: none;
  transition: all 0.3s ease;
  font-family: "Gilroy", sans-serif;
  letter-spacing: 0.02em;
  box-sizing: border-box;
}

.search-input:focus {
  border-color: var(--primary-color);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(0, 128, 129, 0.1);
}

.search-input::placeholder {
  color: var(--tertiary-color);
  opacity: 0.6;
  font-weight: 300;
}

/* Level navigation - стекируем вертикально */
.catalog-level {
  background: var(--white);
  margin-bottom: 2px;
  box-shadow: 0 1px 3px var(--shadow-light);
  width: 100%;
  display: block;
}

.level-header {
  background: var(--primary-color);
  color: var(--white);
  padding: 20px 25px;
  font-size: 18px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  box-sizing: border-box;
}

.level-header:hover {
  background: var(--primary-dark);
}

.catalog-items {
  padding: 0;
  margin: 0;
  list-style: none;
  width: 100%;
}

.catalog-item {
  transition: all 0.3s ease;
  background: var(--white);
  width: 100%;
  display: block;
  position: relative;
}

.catalog-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 1px;
  background: var(--light-gray);
  opacity: 0.5;
}

.catalog-item:last-child::after {
  display: none;
}

.catalog-item:hover {
  background: rgba(0, 128, 129, 0.02);
}

/* Унифицированный стиль для всех элементов от уровня 2 и ниже */
.catalog-link {
  display: flex;
  align-items: stretch;
  width: 100%;
  min-height: 60px;
  background: transparent;
  text-decoration: none;
  color: var(--shadow-color);
  font-weight: 400;
  text-transform: capitalize;
  transition: all 0.3s ease;
  position: relative;
  padding: 0;
  margin: 0;
}

.catalog-link-text {
  flex: 1;
  width: 50%;
  padding: 20px 25px;
  color: inherit;
  text-decoration: none;
  display: flex;
  align-items: center;
  transition: all 0.3s ease;
  cursor: pointer;
  font-weight: 400;
  letter-spacing: 0.02em;
  line-height: 1.3;
  box-sizing: border-box;
  font-size: 16px;
}

.catalog-link-toggle {
  width: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--light-color);
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  outline: none;
  padding: 20px;
  position: relative;
  box-sizing: border-box;
}

/* Визуальное разделение между областями */
.catalog-link-toggle::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20%;
  bottom: 20%;
  width: 1px;
  background: var(--light-gray);
  transition: all 0.3s ease;
}

.catalog-link:hover .catalog-link-text,
.catalog-link-text:hover {
  background: var(--primary-color);
  color: var(--white);
}

.catalog-link-toggle:hover {
  background: var(--secondary-color);
}

.catalog-link-toggle:hover::before {
  background: var(--secondary-light);
}

.catalog-link-toggle:hover .catalog-icon {
  color: var(--white);
  transform: scale(1.1);
}

.catalog-icon {
  color: var(--tertiary-color);
  font-size: 16px;
  transition: all 0.3s ease;
  font-weight: 600;
}

/* Sub-level styling - унифицированный стиль */
.catalog-sub-level {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  background: var(--white);
  width: 100%;
  display: block;
}

.catalog-sub-level.open {
  max-height: 2500px;
}

/* Убираем все отступы и границы, унифицируем все подуровни */
.catalog-sub-level .catalog-item {
  margin: 0;
  background: var(--white);
  width: 100%;
  border: none;
}

.catalog-sub-level .catalog-link {
  min-height: 55px;
}

.catalog-sub-level .catalog-link-text {
  padding: 18px 25px;
  font-size: 15px;
  font-weight: 400;
}

.catalog-sub-level .catalog-link-toggle {
  background: var(--light-color);
  width: 50%;
  padding: 18px 20px;
}

.catalog-sub-level .catalog-link-toggle::before {
  background: var(--light-gray);
}

/* Level 4 sub-items - полная унификация */
.catalog-sub-items {
  background: var(--white);
  padding: 0;
  display: none;
  margin: 0;
  width: 100%;
  transition: all 0.3s ease;
}

.catalog-sub-items.open {
  display: block;
  animation: slideDown 0.4s ease-out;
}

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

.catalog-sub-item {
  transition: all 0.3s ease;
  width: 100%;
  display: block;
  background: var(--white);
  position: relative;
}

.catalog-sub-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 1px;
  background: var(--light-gray);
  opacity: 0.5;
}

.catalog-sub-item:last-child::after {
  display: none;
}

.catalog-sub-item:hover {
  background: rgba(0, 128, 129, 0.02);
}

.catalog-sub-link {
  display: block;
  padding: 18px 25px;
  text-decoration: none;
  color: var(--shadow-color);
  font-size: 14px;
  font-weight: 400;
  text-transform: capitalize;
  transition: all 0.3s ease;
  letter-spacing: 0.02em;
  line-height: 1.4;
  width: 100%;
  box-sizing: border-box;
  min-height: 50px;
  display: flex;
  align-items: center;
}

.catalog-sub-link:hover {
  background: var(--primary-color);
  color: var(--white);
}

/* Убираем все стрелочки и дополнительные элементы для чистоты */
.catalog-sub-link::before {
  display: none;
}

/* Loading and empty states */
.catalog-loading,
.catalog-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--tertiary-color);
  font-size: 16px;
  font-weight: 300;
  background: var(--white);
  width: 100%;
  box-sizing: border-box;
}

.catalog-loading::before,
.catalog-empty::before {
  content: "";
  display: block;
  width: 40px;
  height: 3px;
  background: var(--primary-color);
  margin: 0 auto 20px;
}

/* Collapsible sections */
.catalog-level.collapsible .level-header {
  cursor: pointer;
  position: relative;
}

.catalog-level.collapsible .level-header::after {
  content: "▼";
  font-size: 14px;
  transition: transform 0.3s ease;
  opacity: 0.8;
}

.catalog-level.collapsible.collapsed .level-header::after {
  transform: rotate(-90deg);
}

.catalog-level.collapsible.collapsed .level-header {
  background: var(--tertiary-color);
}

.catalog-level.collapsed .catalog-items {
  display: none;
}

/* Responsive design */
@media (min-width: 768px) {
  .catalog-container {
    padding: 20px;
    background: var(--light-gray);
  }

  .catalog-content {
    max-width: 900px;
    margin: 0 auto;
    background: var(--white);
    box-shadow: 0 8px 40px var(--shadow-light);
    overflow: hidden;
  }

  .catalog-header {
    padding: 50px 40px;
  }

  .catalog-title {
    font-size: 42px;
    margin-bottom: 15px;
  }

  .catalog-subtitle {
    font-size: 18px;
  }

  .catalog-search {
    padding: 30px 40px;
  }

  .search-input {
    padding: 20px 28px;
    font-size: 17px;
  }

  .level-header {
    padding: 25px 40px;
    font-size: 20px;
  }

  .catalog-link {
    min-height: 70px;
  }

  .catalog-link-text {
    padding: 25px 40px;
    font-size: 18px;
  }

  .catalog-link-toggle {
    padding: 25px 30px;
  }

  .catalog-sub-level .catalog-link {
    min-height: 65px;
  }

  .catalog-sub-level .catalog-link-text {
    padding: 22px 40px;
    font-size: 16px;
  }

  .catalog-sub-level .catalog-link-toggle {
    padding: 22px 30px;
  }

  .catalog-sub-link {
    padding: 20px 40px;
    font-size: 15px;
    min-height: 60px;
  }
}

@media (min-width: 1024px) {
  .catalog-container {
    display: none; /* Hide on desktop - use megamenu instead */
  }
}

/* Animation classes */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Enhanced visual feedback */
.catalog-item.active {
  background: rgba(0, 128, 129, 0.03);
}

.catalog-link-text:active {
  transform: scale(0.98);
}

.catalog-link-toggle:active {
  transform: scale(0.95);
}

/* Smooth scrolling behavior */
.catalog-container {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

/* Ensure all elements stack properly */
* {
  box-sizing: border-box;
}

.catalog-container * {
  box-sizing: border-box;
}