/* components/dropdown/dropdown.css */

/**
 * Dropdown Component
 * Advanced dropdown with full accessibility and multi-level support
 */

/* ========================================
   DROPDOWN CUSTOM PROPERTIES
   ======================================== */

.c-dropdown {
  /* Base properties */
  --c-dropdown-min-width: 200px;
  --c-dropdown-max-width: 320px;
  --c-dropdown-max-height: 400px;
  --c-dropdown-border-radius: var(--ds-radius-m);
  --c-dropdown-padding: var(--ds-space-xs);
  --c-dropdown-item-padding-x: var(--ds-space-m);
  --c-dropdown-item-padding-y: var(--ds-space-s);
  --c-dropdown-item-gap: var(--ds-space-s);
  --c-dropdown-offset: var(--ds-space-xs);
  --c-dropdown-z-index: var(--ds-z-dropdown);
  --c-dropdown-transition: all var(--ds-duration-fast) var(--ds-ease-out);
  
  /* Colors */
  --c-dropdown-bg: var(--ds-color-surface);
  --c-dropdown-border-color: var(--ds-color-border);
  --c-dropdown-shadow: var(--ds-shadow-popout);
  --c-dropdown-item-color: var(--ds-color-text);
  --c-dropdown-item-bg-hover: var(--ds-color-surface-raised);
  --c-dropdown-item-bg-active: var(--ds-color-surface-lowered);
  --c-dropdown-item-color-destructive: var(--ds-color-text-danger);
  --c-dropdown-divider-color: var(--ds-color-border);
  --c-dropdown-backdrop-bg: rgba(0, 0, 0, 0.3);
}

/* ========================================
   BASE DROPDOWN STRUCTURE
   ======================================== */

.c-dropdown {
  position: relative;
  display: inline-block;
}

/* Dropdown content container */
.c-dropdown__content {
  position: absolute;
  top: calc(100% + var(--c-dropdown-offset));
  left: 0;
  z-index: var(--c-dropdown-z-index);
  min-width: var(--c-dropdown-min-width);
  max-width: var(--c-dropdown-max-width);
  padding: var(--c-dropdown-padding);
  background: var(--c-dropdown-bg);
  border: 1px solid var(--c-dropdown-border-color);
  border-radius: var(--c-dropdown-border-radius);
  box-shadow: var(--c-dropdown-shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--c-dropdown-transition);
  pointer-events: none;
}

/* Open state */
.c-dropdown--open .c-dropdown__content {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

/* Fixed positioning for overflow/relative containers */
.c-dropdown__content--fixed.c-dropdown__content--fixed {
  position: fixed !important;
  top: auto;
  left: auto;
}

/* Position variants for smart positioning */
.c-dropdown__content--position-top {
  /* Positioned above trigger */
}

.c-dropdown__content--position-bottom {
  /* Positioned below trigger (default) */
}

.c-dropdown__content--position-left {
  /* Positioned to the left of trigger */
}

.c-dropdown__content--position-right {
  /* Positioned to the right of trigger */
}

/* ========================================
   DROPDOWN SIZES
   ======================================== */

.c-dropdown--size-xs .c-dropdown__content {
  --c-dropdown-min-width: 120px;
  --c-dropdown-max-width: 200px;
  --c-dropdown-item-padding-x: var(--ds-space-s);
  --c-dropdown-item-padding-y: var(--ds-space-xs);
  font-size: var(--ds-font-size-xs);
}

.c-dropdown--size-s .c-dropdown__content {
  --c-dropdown-min-width: 160px;
  --c-dropdown-max-width: 240px;
  --c-dropdown-item-padding-x: var(--ds-space-s);
  --c-dropdown-item-padding-y: calc(var(--ds-space-xs) * 1.5);
  font-size: var(--ds-font-size-s);
}

.c-dropdown--size-m .c-dropdown__content {
  /* Default - already defined */
}

.c-dropdown--size-l .c-dropdown__content {
  --c-dropdown-min-width: 240px;
  --c-dropdown-max-width: 360px;
  --c-dropdown-item-padding-x: var(--ds-space-l);
  --c-dropdown-item-padding-y: var(--ds-space-m);
  font-size: var(--ds-font-size-l);
}

.c-dropdown--size-xl .c-dropdown__content {
  --c-dropdown-min-width: 280px;
  --c-dropdown-max-width: 420px;
  --c-dropdown-item-padding-x: var(--ds-space-xl);
  --c-dropdown-item-padding-y: var(--ds-space-m);
  font-size: var(--ds-font-size-xl);
}

/* ========================================
   DROPDOWN POSITIONING
   ======================================== */

/* Dropup */
.c-dropdown--dropup .c-dropdown__content {
  top: auto;
  bottom: calc(100% + var(--c-dropdown-offset));
  transform: translateY(10px);
}

.c-dropdown--dropup.c-dropdown--open .c-dropdown__content {
  transform: translateY(0);
}

/* Right alignment */
.c-dropdown__content--right {
  left: auto;
  right: 0;
}

/* Center alignment */
.c-dropdown__content--center {
  left: 50%;
  transform: translateX(-50%) translateY(-10px);
}

.c-dropdown--open .c-dropdown__content--center {
  transform: translateX(-50%) translateY(0);
}

/* Width variants */
.c-dropdown__content--width-auto {
  width: auto;
}

.c-dropdown__content--width-sm {
  width: 200px;
}

.c-dropdown__content--width-md {
  width: 280px;
}

.c-dropdown__content--width-lg {
  width: 360px;
}

.c-dropdown__content--width-xl {
  width: 420px;
}

.c-dropdown__content--width-full {
  width: 100%;
}

/* ========================================
   DROPDOWN MENU
   ======================================== */

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

/* List items with three-dots menu */
.c-dropdown__menu > li {
  display: flex;
  align-items: center;
  gap: 0;
  position: relative;
  border-radius: calc(var(--c-dropdown-border-radius) - 2px);
}

/* Hover effect for entire row when item has dots menu */
.c-dropdown__menu > li:has([data-has-dots-menu="true"]):hover {
  background: var(--c-dropdown-item-bg-hover);
}

/* Remove individual hover background when parent li is hovered */
.c-dropdown__menu > li:has([data-has-dots-menu="true"]):hover .c-dropdown__item:hover {
  background: transparent;
}

/* ========================================
   DROPDOWN ITEMS
   ======================================== */

.c-dropdown__item {
  display: flex;
  align-items: center;
  gap: var(--c-dropdown-item-gap);
  width: 100%;
  padding: var(--c-dropdown-item-padding-y) var(--c-dropdown-item-padding-x);
  border: none;
  background: transparent;
  color: var(--c-dropdown-item-color);
  text-align: left;
  text-decoration: none;
  cursor: pointer;
  transition: var(--c-dropdown-transition);
  border-radius: calc(var(--c-dropdown-border-radius) - 2px);
  position: relative;
  font-size: inherit;
  line-height: 1.5;
}

/* When item has a three-dots menu, reduce its width to make room */
.c-dropdown__item[data-has-dots-menu="true"] {
  flex: 1;
  min-width: 0;
  padding-right: 0.25rem;
}

/* Hover state */
.c-dropdown__item:hover:not(:disabled) {
  background: var(--c-dropdown-item-bg-hover);
}

/* Active state */
.c-dropdown__item:active:not(:disabled) {
  background: var(--c-dropdown-item-bg-active);
}

/* Focus state */
.c-dropdown__item:focus {
  outline: 2px solid var(--ds-focus-ring-color);
  outline-offset: -2px;
}

/* Disabled state */
.c-dropdown__item:disabled,
.c-dropdown__item[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Selected state */
.c-dropdown__item--selected {
  background: var(--c-dropdown-item-bg-hover);
  font-weight: var(--ds-font-weight-medium);
}

.c-dropdown__item--selected::before {
  content: '✓';
  position: absolute;
  left: var(--ds-space-xs);
  color: var(--ds-color-accent);
}

/* Destructive variant */
.c-dropdown__item--destructive {
  color: var(--c-dropdown-item-color-destructive);
}

.c-dropdown__item--destructive:hover {
  background: rgba(210, 64, 35, 0.1);
}

/* ========================================
   ITEM CONTENT STRUCTURE
   ======================================== */

/* Icon */
.c-dropdown__item-icon {
  flex-shrink: 0;
  width: 1.25em;
  height: 1.25em;
  display: flex;
  align-items: center;
  justify-content: center;
}

.c-dropdown__item-icon svg {
  width: 100%;
  height: 100%;
  stroke-width: var(--ds-icon-stroke-width);
}

/* Text */
.c-dropdown__item-text {
  flex: 1;
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Content wrapper for text + description */
.c-dropdown__item-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.125em;
  min-width: 0;
}

.c-dropdown__item-content .c-dropdown__item-text {
  width: 100%;
}

/* Description */
.c-dropdown__item-description {
  font-size: 0.875em;
  color: var(--ds-color-text-weak);
  white-space: normal;
  line-height: 1.3;
}

/* Right-aligned elements */
.c-dropdown__item-badge,
.c-dropdown__item-label,
.c-dropdown__item-counter,
.c-dropdown__item-shortcut {
  flex-shrink: 0;
  margin-left: auto;
  font-size: 0.875em;
}

/* Badge */
.c-dropdown__item-badge {
  padding: 0.125em 0.375em;
  background: var(--ds-color-status-danger);
  color: white;
  border-radius: var(--ds-radius-pill);
  font-weight: var(--ds-font-weight-semibold);
  line-height: 1.2;
}

/* Label */
.c-dropdown__item-label {
  padding: 0.125em 0.5em;
  background: var(--ds-color-accent);
  color: var(--ds-color-text-on-accent);
  border-radius: var(--ds-radius-s);
  font-weight: var(--ds-font-weight-medium);
}

/* Counter */
.c-dropdown__item-counter {
  color: var(--ds-color-text-weak);
  font-weight: var(--ds-font-weight-medium);
}

/* Shortcut */
.c-dropdown__item-shortcut {
  color: var(--ds-color-text-weaker);
  font-family: var(--ds-font-family-mono);
}

/* Three dots menu button */
.c-dropdown__item-menu {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  margin-left: 0.25rem;
  margin-right: var(--c-dropdown-item-padding-x);
  padding: 0.375rem;
  border: none;
  background: transparent;
  color: var(--ds-color-text-weak);
  cursor: pointer;
  border-radius: var(--ds-radius-s);
  transition: var(--c-dropdown-transition);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}

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

.c-dropdown__item-menu:focus {
  outline: 2px solid var(--ds-focus-ring-color);
  outline-offset: -2px;
}

.c-dropdown__item-menu svg {
  width: 1rem;
  height: 1rem;
  stroke-width: var(--ds-icon-stroke-width);
}

/* ========================================
   SUBMENU (NESTED DROPDOWN)
   ======================================== */

/* Has submenu indicator */
.c-dropdown__item--has-submenu::after {
  content: '';
  position: absolute;
  right: var(--ds-space-s);
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0.25em 0 0.25em 0.375em;
  border-color: transparent transparent transparent currentColor;
  opacity: 0.5;
}

/* Submenu container */
.c-dropdown__submenu {
  position: absolute;
  top: 0;
  left: 100%;
  margin-left: var(--ds-space-xs);
  min-width: var(--c-dropdown-min-width);
  max-width: var(--c-dropdown-max-width);
  padding: var(--c-dropdown-padding);
  background: var(--c-dropdown-bg);
  border: 1px solid var(--c-dropdown-border-color);
  border-radius: var(--c-dropdown-border-radius);
  box-shadow: var(--c-dropdown-shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-0.5rem);
  transition: var(--c-dropdown-transition);
  pointer-events: none;
  z-index: calc(var(--c-dropdown-z-index) + 1);
}

/* Submenu open state - correct selector for sibling element */
.c-dropdown__item--has-submenu[aria-expanded="true"] ~ .c-dropdown__submenu,
.c-dropdown__submenu.c-dropdown__submenu--open,
.c-dropdown__submenu[style*="visibility: visible"] {
  opacity: 1 !important;
  visibility: visible !important;
  transform: translateX(0) !important;
  pointer-events: auto !important;
}

/* Left-side submenu */
.c-dropdown__submenu--left {
  left: auto;
  right: 100%;
  margin-left: 0;
  margin-right: var(--ds-space-xs);
}

.c-dropdown__submenu--left::after {
  left: auto;
  right: var(--ds-space-s);
  border-width: 0.25em 0.375em 0.25em 0;
  border-color: transparent currentColor transparent transparent;
}

/* Submenu width variants */
.c-dropdown__submenu--width-sm {
  width: 200px;
}

.c-dropdown__submenu--width-md {
  width: 280px;
}

.c-dropdown__submenu--width-lg {
  width: 360px;
}

/* Mini dropdown for dots menu */
.c-dropdown__submenu--dots {
  min-width: 120px;
  top: 100%;
  left: auto;
  right: 0;
  margin-top: var(--ds-space-xs);
}

/* ========================================
   GROUPS
   ======================================== */

.c-dropdown__group {
  margin: var(--ds-space-xs) 0;
}

.c-dropdown__group:first-child {
  margin-top: 0;
}

.c-dropdown__group:last-child {
  margin-bottom: 0;
}

/* Group header */
.c-dropdown__group-header {
  padding: var(--ds-space-xs) var(--c-dropdown-item-padding-x);
  font-size: 0.875em;
  font-weight: var(--ds-font-weight-semibold);
  color: var(--ds-color-text-weak);
  text-transform: uppercase;
  letter-spacing: 0.025em;
  user-select: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Accordion group */
.c-dropdown__group--accordion .c-dropdown__group-header {
  cursor: pointer;
  transition: var(--c-dropdown-transition);
}

.c-dropdown__group--accordion .c-dropdown__group-header:hover {
  color: var(--ds-color-text);
}

/* Accordion arrow */
.c-dropdown__group-arrow {
  width: 1em;
  height: 1em;
  transition: transform var(--ds-duration-fast) var(--ds-ease-out);
}

.c-dropdown__group--accordion[data-expanded="true"] .c-dropdown__group-arrow {
  transform: rotate(180deg);
}

/* Accordion content */
.c-dropdown__group-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--ds-duration-normal) var(--ds-ease-out);
}

.c-dropdown__group--accordion[data-expanded="true"] .c-dropdown__group-content {
  max-height: none;
}

/* ========================================
   DIVIDER
   ======================================== */

.c-dropdown__divider {
  height: 1px;
  margin: var(--ds-space-xs) 0;
  background: var(--c-dropdown-divider-color);
  border: none;
}

/* ========================================
   SEARCH
   ======================================== */

.c-dropdown__search {
  padding: var(--ds-space-s) var(--ds-space-s) var(--ds-space-xs);
  border-bottom: 1px solid var(--c-dropdown-divider-color);
  margin-bottom: var(--ds-space-xs);
}

.c-dropdown__search-input {
  width: 100%;
  padding: var(--ds-space-xs) var(--ds-space-s);
  border: 1px solid var(--ds-color-border);
  border-radius: var(--ds-radius-s);
  background: var(--ds-color-surface);
  font-size: var(--ds-font-size-s);
  transition: var(--c-dropdown-transition);
}

.c-dropdown__search-input:focus {
  outline: none;
  border-color: var(--ds-focus-ring-color);
  box-shadow: 0 0 0 2px rgba(13, 86, 150, 0.1);
}

/* ========================================
   LOADING & EMPTY STATES
   ======================================== */

.c-dropdown__loading,
.c-dropdown__empty {
  padding: var(--ds-space-l) var(--ds-space-m);
  text-align: center;
  color: var(--ds-color-text-weak);
}

/* Loading spinner */
.c-dropdown__loading-spinner {
  width: 2rem;
  height: 2rem;
  margin: 0 auto;
  border: 2px solid var(--ds-color-border);
  border-top-color: var(--ds-color-accent);
  border-radius: 50%;
  animation: dropdown-spin 0.6s linear infinite;
}

@keyframes dropdown-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ========================================
   SCROLLABLE CONTENT
   ======================================== */

.c-dropdown__content--scrollable {
  max-height: var(--c-dropdown-max-height);
}

.c-dropdown--open .c-dropdown__content--scrollable {
  overflow: hidden;
}

.c-dropdown__content--scrollable .c-dropdown__menu {
  max-height: calc(var(--c-dropdown-max-height) - var(--ds-space-xs) * 2);
  overflow-y: auto;
  overflow-x: hidden;
}

/* Custom scrollbar */
.c-dropdown__content--scrollable .c-dropdown__menu::-webkit-scrollbar {
  width: 6px;
}

.c-dropdown__content--scrollable .c-dropdown__menu::-webkit-scrollbar-track {
  background: transparent;
}

.c-dropdown__content--scrollable .c-dropdown__menu::-webkit-scrollbar-thumb {
  background: var(--ds-color-border);
  border-radius: var(--ds-radius-pill);
}

.c-dropdown__content--scrollable .c-dropdown__menu::-webkit-scrollbar-thumb:hover {
  background: var(--ds-color-border-strong);
}

/* ========================================
   TRIGGER ARROW
   ======================================== */

.c-dropdown__trigger-arrow {
  width: 1em;
  height: 1em;
  margin-left: var(--ds-space-xs);
  transition: transform var(--ds-duration-fast) var(--ds-ease-out);
}

.c-dropdown--open .c-dropdown__trigger-arrow {
  transform: rotate(180deg);
}

/* ========================================
   SPLIT BUTTON
   ======================================== */

.c-dropdown--split {
  display: inline-flex;
  border-radius: var(--ds-radius-m);
  overflow: hidden;
}

.c-dropdown--split .c-button:first-child {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  border-right: 1px solid rgba(255, 255, 255, 0.2);
}

.c-dropdown--split .c-dropdown__trigger {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
  padding-left: var(--ds-space-s);
  padding-right: var(--ds-space-s);
}

/* ========================================
   BACKDROP
   ======================================== */

.c-dropdown__backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--c-dropdown-backdrop-bg);
  z-index: calc(var(--c-dropdown-z-index) - 1);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--ds-duration-fast) var(--ds-ease-out), visibility 0s linear var(--ds-duration-fast);
  display: none;
}

.c-dropdown--open .c-dropdown__backdrop {
  display: block;
  visibility: visible;
  transition: opacity var(--ds-duration-fast) var(--ds-ease-out), visibility 0s linear 0s;
}

/* ========================================
   MOBILE HEADER
   ======================================== */

.c-dropdown__mobile-close {
  display: none;
  padding: var(--ds-space-s);
  border-bottom: 1px solid var(--c-dropdown-divider-color);
  margin-bottom: var(--ds-space-xs);
  align-items: center;
  justify-content: space-between;
}

/* Show mobile header when enabled via attribute or class */
.c-dropdown[data-mobile-header="true"] .c-dropdown__mobile-close,
.c-dropdown--show-header .c-dropdown__mobile-close {
  display: flex !important;
}

/* Hide mobile header on desktop when mobile-header-only is enabled */
@media (min-width: 481px) {
  .c-dropdown[data-mobile-header-only="true"] .c-dropdown__mobile-close {
    display: none !important;
  }
}

.c-dropdown__mobile-close span {
  font-weight: var(--ds-font-weight-semibold);
  font-size: var(--ds-font-size-l);
}

.c-dropdown__mobile-close button {
  width: 2rem;
  height: 2rem;
  
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--ds-color-text-weak);
  cursor: pointer;
  border-radius: var(--ds-radius-s);
  transition: var(--c-dropdown-transition);
  font-size: 1.5rem;
  line-height: 1;
}

.c-dropdown__mobile-close button:hover {
  background: var(--ds-color-surface-raised);
  color: var(--ds-color-text);
}

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

@media (max-width: 480px) {
  .c-dropdown--responsive .c-dropdown__content,
  .c-dropdown--mobile .c-dropdown__content {
    position: fixed;
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    max-width: none;
    max-height: 80vh;
    border-radius: var(--ds-radius-l) var(--ds-radius-l) 0 0;
    transform: translateY(100%);
    transition: transform var(--ds-duration-normal) var(--ds-ease-out);
  }

  .c-dropdown--responsive.c-dropdown--open .c-dropdown__content,
  .c-dropdown--mobile.c-dropdown--open .c-dropdown__content {
    transform: translateY(0);
  }

  .c-dropdown--responsive .c-dropdown__mobile-close,
  .c-dropdown--mobile .c-dropdown__mobile-close {
    display: flex;
  }

  .c-dropdown--responsive .c-dropdown__menu,
  .c-dropdown--mobile .c-dropdown__menu {
    max-height: 60vh;
    overflow-y: auto;
  }

  /* Show backdrop on mobile mode */
  .c-dropdown--mobile .c-dropdown__backdrop {
    display: block;
  }

  .c-dropdown--mobile.c-dropdown--open .c-dropdown__backdrop {
    opacity: 1;
    visibility: visible;
  }

  /* Disable submenu on mobile */
  .c-dropdown--mobile .c-dropdown__submenu {
    position: static;
    margin: 0;
    padding: 0;
    background: transparent;
    border: none;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
  }

  .c-dropdown--mobile .c-dropdown__item--has-submenu::after {
    display: none;
  }
}

/* ========================================
   ACCESSIBILITY
   ======================================== */

/* High contrast mode */
@media (prefers-contrast: high) {
  .c-dropdown__content {
    border-width: 2px;
  }
  
  .c-dropdown__item:focus {
    outline-width: 3px;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .c-dropdown__content,
  .c-dropdown__submenu,
  .c-dropdown__item,
  .c-dropdown__backdrop,
  .c-dropdown__trigger-arrow,
  .c-dropdown__group-arrow {
    transition: none;
  }
  
  .c-dropdown__loading-spinner {
    animation: none;
  }
}

/* Print styles */
@media print {
  .c-dropdown__content {
    position: static;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    border: 1px solid #000;
  }
}