/*
 * MultiSelect — HeroUI-inspired redesign
 */
:root {
  --ms-primary: #7c3aed;
  --ms-primary-focus: rgba(124, 58, 237, 0.15);
  --ms-primary-light: #f5f3ff;
  --ms-border: #e4e4e7;
  --ms-border-hover: #a1a1aa;
  --ms-bg: #ffffff;
  --ms-text: #18181b;
  --ms-text-muted: #71717a;
  --ms-option-hover: #f4f4f5;
  --ms-option-selected: #f5f3ff;
  --ms-chip-bg: #ede9fe;
  --ms-chip-text: #5b21b6;
  --ms-shadow-panel: 0 8px 30px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.06);
  --ms-radius: 10px;
  --ms-radius-option: 7px;
  --ms-radius-chip: 5px;
  --ms-font-size: 0.8125rem;
  --ms-min-height: 2.375rem;
  --ms-options-height: 280px;
}

/* Dark theme tokens */
.multi-select[data-theme="dark"],
.multi-select[data-theme="auto"] {
  --ms-border: #3f3f46;
  --ms-border-hover: #71717a;
  --ms-bg: #18181b;
  --ms-text: #fafafa;
  --ms-text-muted: #a1a1aa;
  --ms-option-hover: #27272a;
  --ms-option-selected: #2e1065;
  --ms-chip-bg: #2e1065;
  --ms-chip-text: #c4b5fd;
  --ms-shadow-panel: 0 8px 30px rgba(0, 0, 0, 0.4), 0 2px 8px rgba(0, 0, 0, 0.3);
}
@media (prefers-color-scheme: dark) {
  .multi-select[data-theme="auto"] {
    --ms-border: #3f3f46;
    --ms-border-hover: #71717a;
    --ms-bg: #18181b;
    --ms-text: #fafafa;
    --ms-text-muted: #a1a1aa;
    --ms-option-hover: #27272a;
    --ms-option-selected: #2e1065;
    --ms-chip-bg: #2e1065;
    --ms-chip-text: #c4b5fd;
    --ms-shadow-panel: 0 8px 30px rgba(0, 0, 0, 0.4), 0 2px 8px rgba(0, 0, 0, 0.3);
  }
}

/* ── Container ─────────────────────────────────────────────────── */
.multi-select {
  display: flex;
  box-sizing: border-box;
  flex-direction: column;
  position: relative;
  width: 100%;
  user-select: none;
}

/* ── Trigger button ────────────────────────────────────────────── */
.multi-select .multi-select-header {
  display: flex;
  flex-wrap: wrap;
  box-sizing: border-box;
  align-items: center;
  width: 100%;
  cursor: pointer;
  background-color: var(--ms-bg);
  border: 1.5px solid var(--ms-border);
  border-radius: var(--ms-radius);
  padding: 0.375rem 2.25rem 0.375rem 0.75rem;
  gap: 0.25rem;
  min-height: var(--ms-min-height);
  font-size: var(--ms-font-size);
  color: var(--ms-text);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  position: relative;
}

.multi-select .multi-select-header:hover {
  border-color: var(--ms-border-hover);
}

/* Chevron */
.multi-select .multi-select-header::after {
  content: "";
  display: block;
  position: absolute;
  top: 50%;
  right: 0.75rem;
  transform: translateY(-50%);
  width: 0.75rem;
  height: 0.75rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%2371717a' viewBox='0 0 16 16'%3E%3Cpath d='M8 13.1l-8-8 2.1-2.2 5.9 5.9 5.9-5.9 2.1 2.2z'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
  transition: transform 0.2s ease;
  pointer-events: none;
}

/* Active / open state */
.multi-select .multi-select-header.multi-select-header-active {
  border-color: var(--ms-primary);
  box-shadow: 0 0 0 3px var(--ms-primary-focus);
  outline: none;
}

.multi-select .multi-select-header.multi-select-header-active::after {
  transform: translateY(-50%) rotate(180deg);
}

/* Show panel when active */
.multi-select .multi-select-header.multi-select-header-active + .multi-select-options {
  display: flex;
}

/* Placeholder text */
.multi-select .multi-select-header .multi-select-header-placeholder {
  color: var(--ms-text-muted);
  font-size: var(--ms-font-size);
  line-height: 1.5;
}

/* Selected value chips */
.multi-select .multi-select-header .multi-select-header-option {
  display: inline-flex;
  align-items: center;
  background-color: var(--ms-chip-bg);
  color: var(--ms-chip-text);
  font-size: 0.6875rem;
  font-weight: 500;
  padding: 0.125rem 0.5rem;
  border-radius: var(--ms-radius-chip);
  line-height: 1.4;
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.multi-select .multi-select-header .multi-select-header-max {
  font-size: 0.6875rem;
  color: var(--ms-text-muted);
}

/* ── Dropdown panel ────────────────────────────────────────────── */
.multi-select .multi-select-options {
  display: none;
  box-sizing: border-box;
  flex-flow: column nowrap;
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 100%;
  width: auto;
  right: auto;
  z-index: 150;
  padding: 0.3rem;
  background-color: var(--ms-bg);
  border: 1.5px solid var(--ms-border);
  border-radius: var(--ms-radius);
  box-shadow: var(--ms-shadow-panel);
  max-height: var(--ms-options-height);
  overflow-y: auto;
  overflow-x: visible;
  animation: msSlideIn 0.14s ease;
}

@keyframes msSlideIn {
  from {
    opacity: 0;
    transform: translateY(-6px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Scrollbar */
.multi-select .multi-select-options::-webkit-scrollbar {
  width: 4px;
}
.multi-select .multi-select-options::-webkit-scrollbar-track {
  background: transparent;
}
.multi-select .multi-select-options::-webkit-scrollbar-thumb {
  background: var(--ms-border);
  border-radius: 4px;
}

/* ── Individual options ────────────────────────────────────────── */
.multi-select .multi-select-options .multi-select-option,
.multi-select .multi-select-options .multi-select-all,
.multi-select .multi-select-options .multi-select-group {
  display: flex;
  align-items: center;
  box-sizing: border-box;
  width: 100%;
  cursor: pointer;
  padding: 0.4375rem 0.625rem;
  border-radius: var(--ms-radius-option);
  font-size: var(--ms-font-size);
  color: var(--ms-text);
  transition: background-color 0.1s ease;
  position: relative;
}

/* Sub-group indentation */
.multi-select .multi-select-options .multi-select-option[data-group]:not([data-group=""]) {
  padding-left: 1.75rem;
}

/* Hover */
.multi-select .multi-select-options .multi-select-option:hover,
.multi-select .multi-select-options .multi-select-all:hover,
.multi-select .multi-select-options .multi-select-group:hover {
  background-color: var(--ms-option-hover);
}

/* Hide the old checkbox indicator — replaced by right-side checkmark */
.multi-select .multi-select-options .multi-select-option .multi-select-option-radio,
.multi-select .multi-select-options .multi-select-all .multi-select-option-radio,
.multi-select .multi-select-options .multi-select-group .multi-select-option-radio {
  display: none;
}

/* Option label text */
.multi-select .multi-select-options .multi-select-option .multi-select-option-text,
.multi-select .multi-select-options .multi-select-all .multi-select-option-text,
.multi-select .multi-select-options .multi-select-group .multi-select-option-text {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: var(--ms-font-size);
  line-height: 1.5;
  color: inherit;
  padding-right: 1.5rem; /* space for checkmark */
}

/* ── Selected option state ─────────────────────────────────────── */
.multi-select .multi-select-options .multi-select-option.multi-select-selected,
.multi-select .multi-select-options .multi-select-all.multi-select-selected {
  background-color: var(--ms-option-selected);
}

.multi-select .multi-select-options .multi-select-option.multi-select-selected .multi-select-option-text,
.multi-select .multi-select-options .multi-select-all.multi-select-selected .multi-select-option-text,
.multi-select .multi-select-options .multi-select-group.multi-select-selected .multi-select-option-text {
  color: var(--ms-primary);
  font-weight: 500;
}

/* Checkmark for selected items (right-aligned, SVG via ::after) */
.multi-select .multi-select-options .multi-select-option.multi-select-selected::after,
.multi-select .multi-select-options .multi-select-all.multi-select-selected::after {
  content: "";
  position: absolute;
  right: 0.625rem;
  top: 50%;
  transform: translateY(-50%);
  width: 0.875rem;
  height: 0.875rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 16 16'%3E%3Cpath d='M3 8l3.5 3.5 6.5-7' stroke='%237c3aed' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
  flex-shrink: 0;
}

/* ── Group header ──────────────────────────────────────────────── */
.multi-select .multi-select-options .multi-select-group {
  font-weight: 600;
  font-size: 0.6875rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--ms-text-muted);
  cursor: default;
  padding: 0.5rem 0.625rem 0.25rem;
}
.multi-select .multi-select-options .multi-select-group:hover {
  background-color: transparent;
}

/* ── "Select all" separator ────────────────────────────────────── */
.multi-select .multi-select-options .multi-select-all {
  border-bottom: 1px solid var(--ms-border);
  border-radius: 0;
  margin-bottom: 0.25rem;
  padding-bottom: 0.5rem;
}

/* ── Search input inside panel ─────────────────────────────────── */
.multi-select .multi-select-options .multi-select-search {
  box-sizing: border-box;
  width: calc(100% - 0.6rem);
  margin: 0 0.3rem 0.3rem;
  padding: 0.375rem 0.625rem;
  border: 1.5px solid var(--ms-border);
  border-radius: 7px;
  font-size: var(--ms-font-size);
  background-color: var(--ms-bg);
  color: var(--ms-text);
  outline: none;
  transition: border-color 0.15s ease;
}
.multi-select .multi-select-options .multi-select-search:focus {
  border-color: var(--ms-primary);
}
.multi-select .multi-select-options .multi-select-search::placeholder {
  color: var(--ms-text-muted);
}

/* ── Disabled state ────────────────────────────────────────────── */
.multi-select.disabled {
  opacity: 0.5;
  pointer-events: none;
}

/* ── Invalid state ─────────────────────────────────────────────── */
.multi-select.multi-select-invalid .multi-select-header {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}