/* ═══════════════════════════════════════════════════════════════════
   RenDS — Select Component
   ═══════════════════════════════════════════════════════════════════
   Custom, accessible select/dropdown component with full keyboard nav,
   ARIA support, and multi-select capability.

   Structure:
   .ren-select (container)
     .ren-select-trigger (button showing selected value)
       .ren-select-value (the displayed text)
       .ren-select-placeholder (when nothing selected)
       .ren-select-icon (chevron)
     .ren-select-content (dropdown listbox)
       .ren-select-item (option)
       .ren-select-group (optional grouping)
       .ren-select-label (group header)
       .ren-select-separator (divider between groups)
   ═══════════════════════════════════════════════════════════════════ */

/* ═══ SELECT CONTAINER ═══ */
.ren-select {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  width: 100%;
  font-family: inherit;
}

/* ═══ SELECT TRIGGER (Button) ═══ */
.ren-select-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);

  /* Input styling */
  width: 100%;
  min-height: var(--touch-min);
  padding: var(--space-2) var(--space-3);
  font-size: var(--body-size);
  font-family: inherit;
  color: var(--color-text);
  background-color: var(--color-input-bg);
  border: var(--stroke-1) solid var(--color-input-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  text-align: start;
  white-space: nowrap;

  /* Semantic preset keeps trigger hover/focus in sync with other
     tactile inputs (button, checkbox, text field). */
  transition: var(--transition-tactile);
}

.ren-select-trigger:hover:not(:disabled):not([aria-expanded="true"]) {
  background-color: var(--color-input-bg-hover);
}

.ren-select-trigger:focus-visible {
  outline: none;
  border-color: var(--color-input-border-focus);
  box-shadow: 0 0 0 3px var(--color-input-focus-ring);
  background-color: var(--color-input-bg-hover);
}

.ren-select-trigger[aria-expanded="true"] {
  border-color: var(--color-input-border-focus);
  box-shadow: 0 0 0 3px var(--color-input-focus-ring);
  background-color: var(--color-input-bg-hover);
}

.ren-select-trigger:disabled {
  background-color: var(--color-input-disabled-bg);
  color: var(--color-input-disabled-text);
  cursor: not-allowed;
  opacity: 0.7;
}

/* ═══ SELECT VALUE / PLACEHOLDER ═══ */
.ren-select-value {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--color-text);
}

.ren-select-placeholder {
  color: var(--color-input-placeholder);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ═══ SELECT ICON (Chevron) ═══ */
.ren-select-icon {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--duration-micro) var(--ease-enter);
  pointer-events: none;
}

.ren-select-trigger[aria-expanded="true"] .ren-select-icon {
  transform: rotate(180deg);
}

/* SVG chevron icon styling */
.ren-select-icon svg {
  width: 100%;
  height: 100%;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ═══ SELECT CONTENT (Dropdown Listbox) ═══ */
.ren-select-content {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: var(--space-1);
  background: var(--color-surface);
  border: var(--stroke-1) solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding-block: var(--space-2);
  max-height: 15rem;
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  z-index: var(--z-dropdown, 1000);

  visibility: hidden;
  opacity: 0;
  transform: translateY(-4px) scale(0.98);
  animation: ren-select-close var(--duration-exit) var(--ease-exit) forwards;
}

/* ═══ SELECT CONTENT OPEN STATE ═══ */
.ren-select-content[popover]:popover-open,
.ren-select-content.ren-open {
  visibility: visible;
  opacity: 1;
  animation: ren-select-open var(--duration-enter) var(--ease-enter);
}

@keyframes ren-select-open {
  from {
    opacity: 0;
    transform: translateY(-4px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes ren-select-close {
  from {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  to {
    opacity: 0;
    transform: translateY(-4px) scale(0.98);
  }
}

/* ═══ SELECT ITEM (Option) ═══ */
.ren-select-item {
  padding: var(--space-2) var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  /* Micro-duration keeps option hover snappy; tokens/semantic/motion
     collapses this to 0ms under reduced-motion. */
  transition:
    background-color var(--duration-micro) var(--ease-enter),
    color var(--duration-micro) var(--ease-enter);
  white-space: nowrap;
  user-select: none;
  min-height: 2rem;
}

.ren-select-item:hover:not([aria-disabled="true"]),
.ren-select-item[data-highlighted] {
  background-color: var(--color-fill);
  color: var(--color-text);
}

.ren-select-item[aria-selected="true"] {
  background-color: var(--color-accent-subtle);
  color: var(--color-accent);
  font-weight: 500;
}

.ren-select-item[aria-selected="true"]::before {
  content: '';
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  border-radius: var(--radius-sm);
  position: relative;
}

.ren-select-item[aria-selected="true"]::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 70%;
}

.ren-select-item[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* ═══ SELECT GROUP ═══ */
.ren-select-group {
  display: block;
  padding-block: var(--space-1);
}

/* ═══ SELECT GROUP LABEL ═══ */
.ren-select-label {
  padding: var(--space-1) var(--space-3);
  font-size: var(--caption-size);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  user-select: none;
}

/* ═══ SELECT SEPARATOR ═══ */
.ren-select-separator {
  height: var(--stroke-1);
  background: var(--color-border);
  margin-block: var(--space-1);
}

/* ═══ SELECT EMPTY STATE ═══ */
.ren-select-empty {
  padding: var(--space-3) var(--space-4);
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--body-size);
  white-space: nowrap;
}

/* ═══ SIZE VARIANTS ═══ */
.ren-select-sm .ren-select-trigger {
  min-height: var(--size-sm);
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-sm);
  border-radius: var(--radius-sm);
}

.ren-select-lg .ren-select-trigger {
  min-height: var(--size-xl);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-lg);
}

/* ═══ MULTI-SELECT CHIPS/TAGS ═══ */
.ren-select-chips {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  width: 100%;
}

.ren-select-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  background: var(--color-fill);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  color: var(--color-text);
  white-space: nowrap;
}

.ren-select-chip-remove {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1rem;
  height: 1rem;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: var(--transition-tactile);
}

.ren-select-chip-remove:hover {
  color: var(--color-text);
}

/* ═══ REDUCED MOTION ═══ */
@media (prefers-reduced-motion: reduce) {
  .ren-select-trigger,
  .ren-select-icon,
  .ren-select-item {
    transition: none;
  }

  .ren-select-content {
    animation: none;
    opacity: 0;
  }

  .ren-select-content.ren-open {
    opacity: 1;
  }
}

/* ═══ SCROLLBAR STYLING ═══ */
.ren-select-content::-webkit-scrollbar {
  width: 6px;
}

.ren-select-content::-webkit-scrollbar-track {
  background: transparent;
}

.ren-select-content::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

.ren-select-content::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* ═══ NATIVE POPOVER API SUPPORT ═══ */
@supports (selector(:popover-open)) {
  .ren-select-content[popover] {
    visibility: visible;
    opacity: 0;
    transition: opacity var(--duration-enter) var(--ease-enter),
                overlay var(--duration-enter) var(--ease-enter) allow-discrete,
                display var(--duration-enter) var(--ease-enter) allow-discrete;
    animation: none;
  }

  @starting-style {
    .ren-select-content[popover]:popover-open {
      opacity: 0;
    }
  }

  .ren-select-content[popover]:popover-open {
    opacity: 1;
  }
}