.voen-toc {
  border: 1px solid var(--bs-border-color, #dee2e6);
  border-radius: var(--bs-border-radius-lg, 0.75rem);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  background: var(--bs-gray-50, #f8f9fa);
  box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
  transition: all 0.15s ease-in-out;
  position: relative;
}

.voen-toc:hover {
  box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.1);
  border-color: var(--bs-primary, #0d6efd);
}

.voen-toc__toggle {
  all: unset;
  cursor: pointer;
  font-weight: 600;
  line-height: 1.4;
  padding: 0.5rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  color: var(--bs-dark, #212529);
  font-size: 1.1rem;
  transition: color 0.15s ease-in-out;
  user-select: none;
}

.voen-toc__toggle:hover {
  color: var(--bs-primary, #0d6efd);
}

.voen-toc__toggle::before {
  content: "📋";
  margin-right: 0.5rem;
  font-size: 1rem;
}

.voen-toc__toggle::after {
  content: '';
  display: inline-block;
  width: 1rem;
  height: 1rem;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none'%3e%3cpath d='M6 9l6 6 6-6' stroke='%23495057' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  transition: transform 0.2s ease-in-out;
  flex-shrink: 0;
}

.voen-toc.is-collapsed .voen-toc__toggle::after {
  transform: rotate(-90deg);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none'%3e%3cpath d='M9 18l6-6-6-6' stroke='%23495057' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3e%3c/svg%3e");
}

.voen-toc__body {
  margin-top: 0.75rem;
  opacity: 1;
  max-height: 1000px;
  overflow: hidden;
  transition: all 0.3s ease-in-out;
}

.voen-toc.is-collapsed .voen-toc__body {
  opacity: 0;
  max-height: 0;
  margin-top: 0;
}

.voen-toc__list {
  list-style: none;
  margin: 0;
  padding-left: 0;
}

.voen-toc__list .voen-toc__item {
  margin: 0.375rem 0;
  position: relative;
}

.voen-toc__list .voen-toc__item::before {
  content: '';
  position: absolute;
  left: -0.75rem;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 4px;
  background: var(--bs-primary, #0d6efd);
  border-radius: 50%;
  opacity: 0.6;
}

.voen-toc__list .voen-toc__item a {
  text-decoration: none;
  color: var(--bs-body-color, #212529);
  font-size: 0.9rem;
  line-height: 1.5;
  padding: 0.25rem 0;
  display: block;
  transition: all 0.15s ease-in-out;
  position: relative;
  padding-left: 0.75rem;
  border-radius: var(--bs-border-radius-sm, 0.25rem);
}

.voen-toc__list .voen-toc__item a:hover {
  color: var(--bs-primary, #0d6efd);
  padding-left: 1rem;
  background: rgba(13, 110, 253, 0.1);
}

.voen-toc__list .voen-toc__item a:focus {
  outline: 2px solid var(--bs-primary, #0d6efd);
  outline-offset: 2px;
  border-radius: var(--bs-border-radius-sm, 0.25rem);
}

.voen-toc__list .voen-toc__item a:active {
  background: rgba(13, 110, 253, 0.2);
}

.voen-toc__list ul {
  list-style: none;
  margin: 0.25rem 0 0.5rem 1.25rem;
  padding-left: 0.75rem;
  border-left: 2px solid var(--bs-border-color, #dee2e6);
  position: relative;
}

.voen-toc__list ul::before {
  content: '';
  position: absolute;
  left: -2px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--bs-primary, #0d6efd), transparent);
  opacity: 0.3;
}

.voen-toc__list ul .voen-toc__item::before {
  background: var(--bs-secondary, #6c757d);
  width: 3px;
  height: 3px;
  left: -0.875rem;
}

.voen-toc__list ul .voen-toc__item a {
  font-size: 0.85rem;
  color: var(--bs-secondary, #6c757d);
  padding-left: 0.5rem;
}

.voen-toc__list ul .voen-toc__item a:hover {
  color: var(--bs-primary, #0d6efd);
  padding-left: 0.75rem;
}

/* Темная тема */
[data-bs-theme="dark"] .voen-toc {
  background: var(--bs-gray-900, #212529);
  border-color: var(--bs-gray-700, #495057);
}

[data-bs-theme="dark"] .voen-toc:hover {
  border-color: var(--bs-primary, #0d6efd);
}

[data-bs-theme="dark"] .voen-toc__toggle {
  color: var(--bs-light, #f8f9fa);
}

[data-bs-theme="dark"] .voen-toc__toggle::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none'%3e%3cpath d='M6 9l6 6 6-6' stroke='%23adb5bd' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3e%3c/svg%3e");
}

[data-bs-theme="dark"] .voen-toc.is-collapsed .voen-toc__toggle::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none'%3e%3cpath d='M9 18l6-6-6-6' stroke='%23adb5bd' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3e%3c/svg%3e");
}

[data-bs-theme="dark"] .voen-toc__list ul {
  border-left-color: var(--bs-gray-700, #495057);
}

[data-bs-theme="dark"] .voen-toc__list .voen-toc__item a:hover {
  background: rgba(13, 110, 253, 0.2);
}

/* Анимация загрузки */
.voen-toc.loading {
  position: relative;
  overflow: hidden;
}

.voen-toc.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    transparent
  );
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* Адаптивность */
@media (max-width: 576px) {
  .voen-toc {
    margin: 1rem 0;
    padding: 0.75rem 1rem;
  }
  
  .voen-toc__toggle {
    font-size: 1rem;
    padding: 0.375rem 0;
  }
  
  .voen-toc__toggle::before {
    font-size: 0.875rem;
  }
  
  .voen-toc__list .voen-toc__item a {
    font-size: 0.875rem;
  }
  
  .voen-toc__list ul {
    margin-left: 1rem;
    padding-left: 0.5rem;
  }
}

@media (max-width: 320px) {
  .voen-toc {
    padding: 0.5rem 0.75rem;
  }
  
  .voen-toc__toggle {
    font-size: 0.9rem;
  }
}

/* Принт стили */
@media print {
  .voen-toc {
    border: 1px solid #000;
    box-shadow: none;
    break-inside: avoid;
  }
  
  .voen-toc__toggle::after {
    display: none;
  }
  
  .voen-toc.is-collapsed .voen-toc__body {
    display: block !important;
    opacity: 1 !important;
    max-height: none !important;
  }
}

/* Микро-анимации для лучшего UX */
.voen-toc__list .voen-toc__item {
  transform: translateX(0);
  transition: transform 0.2s ease-in-out;
}

.voen-toc__list .voen-toc__item:hover {
  transform: translateX(2px);
}

/* Индикатор активного элемента */
.voen-toc__list .voen-toc__item a.active {
  color: var(--bs-primary, #0d6efd);
  font-weight: 600;
  background: rgba(13, 110, 253, 0.1);
  border-left: 3px solid var(--bs-primary, #0d6efd);
  padding-left: calc(0.75rem - 3px);
}

.voen-toc__list ul .voen-toc__item a.active {
  padding-left: calc(0.5rem - 3px);
}