/*
 * Dropdown Component
 * Customizable dropdown menu
 */

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

.dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 0.875rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--theme-text-primary);
  background-color: var(--theme-surface);
  border: 1px solid var(--theme-border);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: transform var(--transition-speed), opacity var(--transition-speed), box-shadow var(--transition-speed);
  user-select: none;
}

.dropdown-trigger:hover {
  background-color: var(--theme-bg);
  border-color: var(--theme-accent);
}

.dropdown-trigger-icon {
  margin-left: auto;
  transition: transform var(--transition-speed);
}

.dropdown.is-open .dropdown-trigger-icon {
  transform: rotate(180deg);
}

/* Dropdown Menu */
.dropdown-menu {
  position: absolute;
  top: calc(100% + 0.25rem);
  left: 0;
  z-index: 1000;
  min-width: 200px;
  padding: 0.5rem;
  background-color: var(--theme-surface);
  border: 1px solid var(--theme-border);
  border-radius: var(--border-radius);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-0.5rem);
  transition: transform var(--transition-speed), opacity var(--transition-speed), box-shadow var(--transition-speed);
}

.dropdown.is-open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu-right {
  left: auto;
  right: 0;
}

.dropdown-menu-top {
  top: auto;
  bottom: calc(100% + 0.25rem);
}

/* Dropdown Item */
.dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  color: var(--theme-text-primary);
  text-decoration: none;
  border-radius: calc(var(--border-radius) / 2);
  cursor: pointer;
  transition: transform var(--transition-speed), opacity var(--transition-speed), box-shadow var(--transition-speed);
}

.dropdown-item:hover {
  background-color: var(--theme-bg);
}

.dropdown-item:active {
  background-color: var(--theme-accent);
  color: var(--theme-accent-contrast);
}

.dropdown-item.is-active {
  background-color: var(--theme-accent);
  color: var(--theme-accent-contrast);
}

.dropdown-item.is-disabled {
  opacity: var(--alpha-disabled);
  cursor: not-allowed;
  pointer-events: none;
}

/* Dropdown Divider */
.dropdown-divider {
  height: 1px;
  margin: 0.5rem 0;
  background-color: var(--theme-border);
}

/* Dropdown Header */
.dropdown-header {
  padding: 0.5rem 0.75rem 0.25rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--theme-text-secondary);
}

/* Multi-Select Dropdown */
.dropdown-multiselect .dropdown-item {
  padding-left: 2rem;
  position: relative;
}

.dropdown-multiselect .dropdown-item::before {
  content: "";
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1rem;
  height: 1rem;
  border: 2px solid var(--theme-border);
  border-radius: calc(var(--border-radius) / 4);
  transition: transform var(--transition-speed), opacity var(--transition-speed), box-shadow var(--transition-speed);
}

.dropdown-multiselect .dropdown-item.is-selected::before {
  background-color: var(--theme-accent);
  border-color: var(--theme-accent);
}

.dropdown-multiselect .dropdown-item.is-selected::after {
  content: "";
  position: absolute;
  left: 0.95rem;
  top: 50%;
  width: 0.25rem;
  height: 0.5rem;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: translateY(-60%) rotate(45deg);
}