/* components/sidebar-internal/sidebar-internal.css */
/* Secondary/Internal Sidebar Component - BEM Methodology */

/* ========================================
   SIDEBAR INTERNAL CONTAINER
   ======================================== */

.c-sidebar-internal {
  position: relative;
  width: var(--nav-sidebar-internal-width);
  min-width: var(--nav-sidebar-internal-min-width);
  max-width: var(--nav-sidebar-internal-max-width);
  height: 100%;
  background: var(--nav-sidebar-internal-bg);
  border-right: 1px solid var(--nav-sidebar-internal-border);
  display: flex;
  flex-direction: column;
  z-index: var(--nav-z-sidebar-internal);
  transition: transform var(--ds-duration-normal) var(--ds-ease-out),
              width var(--ds-duration-normal) var(--ds-ease-out),
              margin-right var(--ds-duration-normal) var(--ds-ease-out);
  transform: translateX(0);
  flex-shrink: 0;
}

/* Hidden state - slide left with negative margin to not affect layout */
.c-sidebar-internal--hidden {
  transform: translateX(-100%);
  margin-right: calc(var(--nav-sidebar-internal-width) * -1);
}

.c-sidebar-internal[aria-hidden="true"] {
  transform: translateX(-100%);
  margin-right: calc(var(--nav-sidebar-internal-width) * -1);
}

/* Hover reveal zone when hidden */
.c-sidebar-internal--hidden::after {
  content: '';
  position: absolute;
  left: 100%;
  top: 0;
  bottom: 0;
  width: 20px;
  z-index: 10;
  cursor: e-resize;
}

/* Temporary visible state on hover */
.c-sidebar-internal--hidden.c-sidebar-internal--hover-reveal {
  transform: translateX(0);
  margin-right: calc(var(--nav-sidebar-internal-width) * -1);
  box-shadow: 4px 0 20px rgba(0, 0, 0, 0.1);
}

/* Open/Closed states for mobile toggle */
.c-sidebar-internal--closed {
  transform: translateX(-100%);
}

.c-sidebar-internal--open {
  transform: translateX(0);
}

/* Mobile: sidebar as overlay */
@media (max-width: 767px) {
  .c-sidebar-internal {
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    z-index: 1000;
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.15);
  }

  .c-sidebar-internal--closed {
    transform: translateX(-100%);
    margin-right: 0;
  }

  .c-sidebar-internal--open {
    transform: translateX(0);
    margin-right: 0;
  }
}

/* ========================================
   SIDEBAR INTERNAL HEADER
   ======================================== */

.c-sidebar-internal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--ds-space-l);
  min-height: var(--nav-topbar-height);
  border-bottom: 1px solid var(--ds-color-border);
  flex-shrink: 0;
  background: var(--ds-color-surface);
}

.c-sidebar-internal__title {
  margin: 0;
  font-size: var(--ds-font-size-m);
  font-weight: var(--ds-font-weight-semibold);
  color: var(--ds-color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ========================================
   SIDEBAR INTERNAL ACTIONS
   ======================================== */

.c-sidebar-internal__actions {
  padding: var(--ds-space-m);
  display: flex;
  gap: var(--ds-space-s);
  flex-direction: column;
  flex-shrink: 0;
}

/* Horizontal layout variant */
.c-sidebar-internal__actions--horizontal {
  flex-direction: row;
  flex-wrap: wrap;
}

/* Grid layout variant */
.c-sidebar-internal__actions--grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--ds-space-s);
}

.c-sidebar-internal__close {
  display: none;
  width: 32px;
  height: 32px;
  align-items: center;
  justify-content: center;
  padding: 0;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--ds-radius-m);
  color: var(--ds-color-icon);
  cursor: pointer;
  transition: all var(--ds-duration-fast) var(--ds-ease-out);
}

.c-sidebar-internal__close:hover {
  background: var(--ds-color-surface-hover);
  border-color: var(--ds-color-border);
  color: var(--ds-color-text);
}

/* Toggle button in main content area */
.c-sidebar-internal__toggle-main {
  position: absolute;
  top: var(--ds-space-m);
  left: var(--ds-space-m);
  z-index: 10;
  display: none;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  background: var(--ds-color-surface);
  border: 1px solid var(--ds-color-border);
  border-radius: var(--ds-radius-m);
  color: var(--ds-color-icon);
  cursor: pointer;
  transition: all var(--ds-duration-fast) var(--ds-ease-out);
  box-shadow: var(--ds-shadow-s);
}

.c-sidebar-internal__toggle-main:hover {
  background: var(--ds-color-surface-hover);
  border-color: var(--ds-color-border-strong);
  color: var(--ds-color-text);
  box-shadow: var(--ds-shadow-m);
}

/* Show toggle button when sidebar is hidden */
.c-sidebar-internal--hidden ~ .c-main .c-sidebar-internal__toggle-main,
.c-main--sidebar-internal-hidden .c-sidebar-internal__toggle-main {
  display: flex;
}

/* ========================================
   SIDEBAR INTERNAL CONTENT
   ======================================== */

.c-sidebar-internal__content {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--ds-space-l);
}

.c-sidebar-internal__scroll {
  padding-right: var(--ds-space-s);
}

/* ========================================
   SIDEBAR INTERNAL RESIZER
   ======================================== */

.c-sidebar-internal__resizer {
  position: absolute;
  right: -3px;
  top: 0;
  bottom: 0;
  width: 6px;
  cursor: ew-resize;
  background: transparent;
  transition: background var(--ds-duration-fast) var(--ds-ease-out);
  z-index: 20;
}

.c-sidebar-internal__resizer:hover,
.c-sidebar-internal__resizer--active {
  background: var(--ds-color-accent);
}

/* Resizing state */
body.is-resizing-sidebar-internal {
  cursor: ew-resize !important;
  user-select: none !important;
}

body.is-resizing-sidebar-internal * {
  pointer-events: none !important;
}

body.is-resizing-sidebar-internal .c-sidebar-internal__resizer {
  pointer-events: auto !important;
  background: var(--ds-color-accent) !important;
}

/* ========================================
   TREE NAVIGATION
   ======================================== */

.c-tree {
  list-style: none;
  padding: 0;
  margin: 0;
}

.c-tree__item {
  position: relative;
  margin-bottom: var(--ds-space-xs);
}

.c-tree__link {
  display: flex;
  align-items: center;
  gap: var(--ds-space-s);
  padding: var(--ds-space-s) var(--ds-space-s);
  font-size: var(--ds-font-size-s);
  border-radius: var(--ds-radius-m);
  transition: all var(--ds-duration-fast) var(--ds-ease-out);
}

.c-tree__link:hover {
  background: var(--ds-color-surface-hover);
}

.c-tree__link:has(.c-tree__link--active) {
  background: var(--ds-color-accent-weak);
}

/* Link content - the actual clickable area with icon and text */
.c-tree__link-content {
  display: inline-flex;
  align-items: center;
  gap: var(--ds-space-s);
  color: var(--ds-color-text);
  text-decoration: none;
  transition: color var(--ds-duration-fast) var(--ds-ease-out);
}

.c-tree__link-content:hover {
  color: var(--ds-color-text-strong);
}

.c-tree__link-content.c-tree__link--active {
  color: var(--ds-color-accent);
  font-weight: var(--ds-font-weight-medium);
}

.c-tree__toggle {
  width: 20px;
  height: 20px;
  padding: 0;
  background: transparent;
  border: none;
  color: var(--ds-color-icon);
  cursor: pointer;
  transition: transform var(--ds-duration-fast) var(--ds-ease-out);
}

.c-tree__toggle[aria-expanded="true"] {
  transform: rotate(90deg);
}

.c-tree__icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0.7;
}

.c-tree__text {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.c-tree__list--nested {
  margin-left: var(--nav-tree-indent);
  padding-left: var(--ds-space-m);
  border-left: 1px solid var(--nav-tree-line-color);
  margin-top: var(--ds-space-xs);
}

/* ========================================
   ACCORDION
   ======================================== */

/* .c-accordion {
  border: 1px solid var(--ds-color-border);
  border-radius: var(--ds-radius-l);
  overflow: hidden;
  margin-bottom: var(--ds-space-m);
}

.c-accordion__item {
  border-bottom: 1px solid var(--ds-color-border);
}

.c-accordion__item:last-child {
  border-bottom: none;
}

.c-accordion__trigger {
  width: 100%;
  padding: var(--ds-space-m);
  background: var(--ds-color-surface);
  border: none;
  text-align: left;
  font-size: var(--ds-font-size-m);
  font-weight: var(--ds-font-weight-medium);
  color: var(--ds-color-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all var(--ds-duration-fast) var(--ds-ease-out);
}

.c-accordion__trigger:hover {
  background: var(--ds-color-surface-hover);
}

.c-accordion__trigger[aria-expanded="true"] {
  background: var(--ds-color-surface-raised);
}

.c-accordion__icon {
  width: 20px;
  height: 20px;
  transition: transform var(--ds-duration-fast) var(--ds-ease-out);
}

.c-accordion__trigger[aria-expanded="true"] .c-accordion__icon {
  transform: rotate(180deg);
}

.c-accordion__content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--ds-duration-normal) var(--ds-ease-out);
}

.c-accordion__trigger[aria-expanded="true"] + .c-accordion__content {
  max-height: 500px;
}

.c-accordion__body {
  padding: var(--ds-space-m);
  background: var(--ds-color-surface);
} */

/* ========================================
   TABS
   ======================================== */

/* .c-tabs {
  margin-bottom: var(--ds-space-l);
}

.c-tabs__list {
  display: flex;
  gap: var(--ds-space-xs);
  border-bottom: 1px solid var(--ds-color-border);
  margin-bottom: var(--ds-space-m);
}

.c-tabs__tab {
  padding: var(--ds-space-s) var(--ds-space-m);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--ds-color-text-weak);
  font-size: var(--ds-font-size-m);
  font-weight: var(--ds-font-weight-medium);
  cursor: pointer;
  transition: all var(--ds-duration-fast) var(--ds-ease-out);
  white-space: nowrap;
}

.c-tabs__tab:hover {
  color: var(--ds-color-text);
  background: var(--ds-color-surface-hover);
}

.c-tabs__tab[aria-selected="true"] {
  color: var(--ds-color-accent);
  border-bottom-color: var(--ds-color-accent);
}

.c-tabs__panel {
  padding: var(--ds-space-m) 0;
}

.c-tabs__panel[aria-hidden="true"] {
  display: none;
} */

/* ========================================
   FILTERS & CONTROLS
   ======================================== */

.c-sidebar-internal__filters {
  padding: var(--ds-space-m);
  background: var(--ds-color-surface-raised);
  border-radius: var(--ds-radius-m);
  margin-bottom: var(--ds-space-l);
}

.c-sidebar-internal__filter-group {
  margin-bottom: var(--ds-space-m);
}

.c-sidebar-internal__filter-group:last-child {
  margin-bottom: 0;
}

.c-sidebar-internal__filter-label {
  display: block;
  margin-bottom: var(--ds-space-s);
  font-size: var(--ds-font-size-s);
  font-weight: var(--ds-font-weight-medium);
  color: var(--ds-color-text-weak);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.c-sidebar-internal__filter-input {
  width: 100%;
  padding: var(--ds-space-s) var(--ds-space-m);
  background: var(--ds-color-surface);
  border: 1px solid var(--ds-color-border);
  border-radius: var(--ds-radius-m);
  font-size: var(--ds-font-size-m);
  color: var(--ds-color-text);
  transition: all var(--ds-duration-fast) var(--ds-ease-out);
}

.c-sidebar-internal__filter-input:hover {
  border-color: var(--ds-color-border-strong);
}

.c-sidebar-internal__filter-input:focus {
  outline: none;
  border-color: var(--ds-color-accent);
  box-shadow: 0 0 0 3px rgba(13, 86, 150, 0.1);
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 1024px) {
  .c-sidebar-internal {
    position: fixed;
    top: var(--nav-topbar-height);
    left: 0;
    bottom: 0;
    z-index: var(--nav-z-sidebar);
    transform: translateX(-100%);
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.1);
  }
  
  .c-sidebar-internal--visible {
    transform: translateX(0);
  }
  
  .c-sidebar-internal__close {
    display: flex;
  }
  
  .c-sidebar-internal__resizer {
    display: none;
  }
  
  .c-sidebar-internal[aria-hidden="false"] {
    transform: translateX(0);
    margin-right: 0;
  }
  
  .c-sidebar-internal[aria-hidden="true"] {
    transform: translateX(-100%);
    margin-right: 0;
  }
  
  /* No hover reveal on tablet/mobile */
  .c-sidebar-internal--hidden::after {
    display: none;
  }
}

@media (max-width: 768px) {
  .c-sidebar-internal {
    width: 85vw;
    max-width: 320px;
  }
  
  .c-sidebar-internal__toggle-main {
    display: flex !important;
  }
}

/* ========================================
   DARK THEME ADJUSTMENTS
   ======================================== */

[data-theme="dark"] .c-sidebar-internal__filter-input {
  background: var(--ds-color-surface);
}

[data-theme="dark"] .c-sidebar-internal__filter-input:focus {
  box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.2);
}

[data-theme="dark"] .c-tree__list--nested {
  border-left-color: var(--ds-color-border);
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {
  .c-sidebar-internal {
    display: none;
  }
}