/**
 * Sidebar component styles.
 * Left navigation sidebar with sections and navigation links.
 */

.sidebar {
  /* Make the *inner content* (sidebar__inner) a true 300px wide.
     Because we use box-sizing:border-box globally, padding+border are included in width. */
  width: calc(336px + (2 * var(--space-md)) + 1px);
  background-color: var(--color-bg);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  padding: var(--space-md);
  overflow-y: auto;
  flex-shrink: 0;
  contain: layout paint;
}

.sidebar__inner {
  width: 336px;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.sidebar__ad {
  color: var(--color-ad-text);
  border-radius: var(--radius-md);
  text-align: center;
  min-height: 250px;
  max-height: 600px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  contain: layout paint style;
}

.sidebar__ad-content {
  display: block;
}

.sidebar__section {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.sidebar__section-header {
  font-size: var(--font-size-sm);
  color: var(--color-accent);
  margin: 0;
  margin-bottom: var(--space-sm);
  font-weight: var(--font-weight-bold);
  padding-left: var(--space-xs);
}

.sidebar__nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm);
  text-decoration: none;
  color: var(--color-text);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background-color: var(--color-bg);
  /* Transform handled by base micro-interactions; keep visual transitions here */
  transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
  position: relative;
  contain: layout paint;
}

.sidebar__nav-item {
  --ui-hover-transform: scale(1.02);
  --ui-active-transform: scale(0.95);
}

.sidebar__nav-item:hover {
  background-color: var(--color-bg-muted);
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-sm);
}

.sidebar__nav-item--active {
  /* Active item: full red border + thicker left border (like design) */
  border: 2px solid var(--color-accent);
  border-left-width: 12px;
  background-color: var(--color-bg);
}

/* Keep the active border color stable on hover */
.sidebar__nav-item--active:hover {
  border-color: var(--color-accent);
}

.sidebar__nav-icon {
  opacity: 1;
  flex-shrink: 0;
  height: 24px;
  display: block;
}

.sidebar__nav-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

.sidebar__nav-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.sidebar__nav-subtitle {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-normal);
}

.sidebar__nav-badge {
  background-color: var(--color-badge-bg);
  padding: 4px var(--space-xs);
  border-radius: var(--radius-xl);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-badge-text);
  margin-left: auto;
  flex-shrink: 0;
}

.sidebar__nav-arrow {
  margin-left: auto;
  opacity: 0.6;
  transition: transform var(--transition-slow);
  flex-shrink: 0;
}

/* Dropdown Styles */
.sidebar__dropdown-container {
  display: flex;
  flex-direction: column;
  margin-bottom: 0;
  width: 100%; /* Ensure full width, each on its own line */
}

/*
  When a dropdown is open, keep the container at its natural size.
  Preserve GPU stacking context but prevent scale transforms so the
  expanded panel doesn't visually grow beyond the toggle's hover size.
*/
.sidebar__dropdown-container.open {
  transform: translateZ(0);
  will-change: transform;
}

.sidebar__dropdown-container.open .sidebar__nav-item:hover,
.sidebar__dropdown-container.open .sidebar__nav-item:active,
.sidebar__dropdown-container.open .sidebar__dropdown-item:hover,
.sidebar__dropdown-container.open .sidebar__dropdown-item:active {
  transform: translateZ(0);
  box-shadow: none;
}

.sidebar__dropdown-container .sidebar__nav-item:focus,
.sidebar__dropdown-container .sidebar__nav-item:focus-visible {
  outline: none;
  box-shadow: none;
}

.sidebar__dropdown-container.open .sidebar__nav-arrow {
  transform: rotate(90deg);
}

.sidebar__dropdown-menu {
  display: flex;
  flex-direction: column;
  margin-top: calc(var(--space-sm) * -1);
  border: 1px solid var(--color-border);
  border-top: none;
  border-bottom-left-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
  overflow-y: auto;
  overflow-x: hidden;
  background-color: var(--color-bg);
  contain: layout paint;
  max-height: 0;
  opacity: 0;
  transform: translateY(calc(var(--space-sm) * -1));
  transition: max-height var(--transition-slow),
    opacity var(--transition-slow),
    transform var(--transition-slow),
    visibility 0s linear 1s;
  visibility: hidden;
  padding: var(--space-xs) 0;
}

.sidebar__dropdown-container.open .sidebar__dropdown-menu {
  max-height: 600px;
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
  margin-bottom: var(--space-sm);
  transition: max-height var(--transition-slow),
    opacity var(--transition-base),
    transform var(--transition-slow),
    visibility 0s linear 0s;
}

.sidebar__dropdown-container:focus-within {
  outline: none;
}

.sidebar__dropdown-container.open .sidebar__nav-item {
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  border-bottom-color: transparent;
  background-color: var(--color-bg-muted);
}

/* If the dropdown toggle is active, keep the full border red (including bottom) */
.sidebar__dropdown-container.open .sidebar__nav-item.sidebar__nav-item--active {
  border-bottom-color: var(--color-accent);
  background-color: var(--color-bg);
}

/* If the dropdown toggle is active, the dropdown menu border should also be red */
.sidebar__dropdown-container.open .sidebar__nav-item.sidebar__nav-item--active + .sidebar__dropdown-menu {
  border: 2px solid var(--color-accent);
  border-top: none;
  border-left-width: 12px;
}

@media (min-width: 1025px) {
  .sidebar__dropdown-menu--podcasts {
    overflow-y: visible;
  }

  .sidebar__dropdown-container.open .sidebar__dropdown-menu--podcasts {
    max-height: none;
  }
}

.sidebar__dropdown-item,
.sidebar__dropdown-item:link,
.sidebar__dropdown-item:visited {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  cursor: pointer;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  font-weight: var(--font-weight-semibold);
  transition: background-color var(--transition-fast);
  line-height: 1.4;
  text-decoration: none;
  position: relative;
}

.sidebar__dropdown-item {
  --ui-hover-transform: scale(1.01);
  --ui-active-transform: scale(0.95);
}

.sidebar__dropdown-item:last-child {
  border-bottom: none;
}

.sidebar__dropdown-item::before {
  content: '';
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  background-color: var(--color-bg);
  transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.sidebar__dropdown-item:hover::before {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
}

.sidebar__dropdown-item:hover {
  background-color: var(--color-bg-muted);
  color: var(--color-text);
}

.sidebar__dropdown-item--active,
.sidebar__dropdown-item--active:link,
.sidebar__dropdown-item--active:visited {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
}

.sidebar__dropdown-item--active::before {
  background-color: var(--color-text-inverse);
  border-color: var(--color-text-inverse);
}

/* Responsive: Hide sidebar on mobile */
@media (max-width: 1024px) {
  .sidebar {
    display: none;
  }
}