import { css } from 'lit';

export const styles = css`
  :host {
    box-sizing: border-box;
    -webkit-font-smoothing: var(--nile-webkit-font-smoothing, var(--ng-webkit-font-smoothing));
    -moz-osx-font-smoothing: var(--nile-moz-osx-font-smoothing, var(--ng-moz-osx-font-smoothing));
    text-rendering: var(--nile-text-rendering, var(--ng-text-rendering));
  }

  :host *,
  :host *::before,
  :host *::after {
    box-sizing: inherit;
  }

  [hidden] {
    display: none;
  }

  :host {
    display: block;
    width: 100%;
  }

  .detail {
    border: 1px solid var(--nile-colors-neutral-400, var(--ng-colors-border-secondary));
    border-radius: var(--nile-radius-md, var(--ng-radius-xl));
    background-color: var(--nile-colors-white-base, var(--ng-colors-bg-primary));
    box-shadow: var(--nile-box-shadow-3, var(--ng-shadow-xs));
    overflow: hidden;
    width: 100%;
    line-height: var(--nile-line-height-inherit, var(--ng-line-height-text-sm));
    font-family: var(--nile-font-family-sans-serif, var(--ng-font-family-body));
  }

  .detail--disabled {
    opacity: var(--nile-opacity-50, var(--ng-opacity-50));
  }

  .detail__header {
    display: flex;
    gap: var(--nile-spacing-lg, var(--ng-spacing-lg));
    align-items: center;
    border-radius: inherit;
    padding: var(--nile-spacing-xl, var(--ng-spacing-xl));
    background-color: var(--nile-colors-neutral-100, var(--ng-colors-bg-tertiary));
    font-size: var(--nile-type-scale-4, var(--ng-spacing-xl));
    font-weight: var(--nile-font-weight-semibold, var(--ng-font-weight-semibold));
    color: var(--nile-colors-neutral-900, var(--ng-colors-text-primary));
    user-select: none;
    cursor: pointer;
    list-style: none;
  }

  .detail__header::-webkit-details-marker {
    display: none;
  }

  .detail__header::marker {
    content: '';
  }

  .detail__header--icon-left {
    flex-direction: row-reverse;
  }

  .detail__header:focus {
    outline: none;
  }

  .detail__header:focus-visible {
    outline: solid 3px var(--nile-colors-blue-500, var(--ng-colors-fg-brand-primary-600));
    outline-offset: calc(1px + 1px);
  }

  .detail--disabled .detail__header {
    cursor: not-allowed;
  }

  .detail--disabled .detail__header:focus-visible {
    outline: none;
    box-shadow: none;
  }

  .detail__label {
    width: 100%;
    display: flex;
    flex-direction: column;
  }

  .detail__header-actions {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    gap: var(--nile-spacing-sm, var(--ng-spacing-sm));
  }

  .detail__prefix {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    gap: var(--nile-spacing-sm, var(--ng-spacing-sm));
  }

  .detail__suffix {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    gap: var(--nile-spacing-sm, var(--ng-spacing-sm));
  }

  .detail__heading-text {
    font-weight: var(--nile-font-weight-semibold, var(--ng-font-weight-semibold));
    font-family: var(--nile-font-family-medium, var(--ng-font-family-body));
    font-size: var(--nile-type-scale-4, var(--ng-spacing-xl));
  }

  .detail__description {
    font-size: var(--nile-type-scale-2, var(--ng-font-size-text-xs));
    font-weight: var(--nile-font-weight-regular, var(--ng-font-weight-regular));
    color: var(--nile-colors-dark-500, var(--ng-colors-text-secondary));
    margin-top: 2px;
  }

  .detail__summary-icon {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    transition: 250ms transform ease;
    color: var(--nile-colors-neutral-700, var(--ng-colors-text-secondary));
    transform: rotate(90deg);
  }

  .detail--open .detail__summary-icon {
    transform: rotate(-90deg);
  }

  .detail__body {
    overflow: hidden;
  }

  .detail__body[hidden] {
    display: none;
  }

  .detail__content {
    display: block;
    padding: var(--nile-spacing-xl, var(--ng-spacing-xl));
  }

  .detail__content--empty {
    display: none;
    padding: 0;
  }

  /* ── Preview state ──────────────────────────────────────────────────────── */

  .detail__body--preview {
    position: relative;
    cursor: pointer;
  }

  .detail__body--preview::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: var(--nile-detail-preview-fade-height, 40px);
    background: linear-gradient(
      to bottom,
      transparent,
      var(--nile-colors-white-base, var(--ng-colors-bg-primary))
    );
    pointer-events: none;
  }

  .detail__body--preview:focus {
    outline: none;
  }

  .detail__body--preview:focus-visible {
    outline: solid 3px var(--nile-colors-blue-500, var(--ng-colors-fg-brand-primary-600));
    outline-offset: -3px;
  }

  .detail--disabled .detail__body--preview {
    cursor: not-allowed;
  }

  /* ── Selection variant ──────────────────────────────────────────────────── */

  .detail__selection-label {
    display: flex;
    align-items: center;
    gap: var(--nile-spacing-lg, var(--ng-spacing-lg));
    flex: 1;
    min-width: 0;
  }

  .detail__select-all {
    flex: 0 0 auto;
  }

  .detail__selection-title {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
    min-width: 0;
  }

  .detail__selection-count {
    font-size: var(--nile-type-scale-2, var(--ng-font-size-text-xs));
    font-weight: var(--nile-font-weight-regular, var(--ng-font-weight-regular));
    color: var(--nile-colors-dark-500, var(--ng-colors-text-secondary));
    margin-top: 2px;
  }

  .detail__selection-content {
    padding: var(--nile-spacing-xl, var(--ng-spacing-xl));
  }

  .detail__selection-toolbar {
    display: flex;
    align-items: center;
    gap: var(--nile-spacing-lg, var(--ng-spacing-lg));
    margin-bottom: var(--nile-spacing-lg, var(--ng-spacing-lg));
  }

  .detail__selection-search {
    flex: 1;
    min-width: 0;
  }

  .detail__selection-search-slot {
    display: flex;
    flex: 1;
    min-width: 0;
  }

  .detail__selection-search-slot::slotted(*) {
    flex: 1;
    min-width: 0;
  }

  .detail__selected-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  .detail__selection-actions {
    display: flex;
    align-items: center;
    gap: var(--nile-spacing-xl, var(--ng-spacing-xl));
    flex: 0 0 auto;
  }

  .detail__selection-grid {
    display: grid;
    grid-auto-flow: column;
    gap: 8px 24px;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 4px 4px 8px;
    scroll-snap-type: x proximity;
  }

  .detail__selection-grid--virtual {
    display: block;
    position: relative;
    width: 100%;
    contain: layout paint;
  }

  .detail__selection-grid--virtual.detail__selection-grid--vertical {
    overflow-x: hidden;
    overflow-y: auto;
    scroll-snap-type: y proximity;
  }

  .detail__selection-grid--virtual.detail__selection-grid--vertical::-webkit-scrollbar {
    width: 8px;
    height: 0;
  }

  .detail__selection-grid--virtual.detail__selection-grid--both {
    overflow: auto;
    scroll-snap-type: none;
  }

  .detail__selection-grid--virtual.detail__selection-grid--both::-webkit-scrollbar {
    width: 8px;
    height: 8px;
  }

  .detail__selection-grid--virtual .detail__selection-track {
    position: relative;
  }

  .detail__selection-tooltip--virtual {
    box-sizing: border-box;
    padding-right: 24px;
  }

  .detail__selection-grid > nile-checkbox,
  .detail__selection-grid > .detail__selection-tooltip {
    scroll-snap-align: start;
    min-width: 0;
    display: block;
    max-width: 100%;
    overflow: visible;
    padding-left: 4px;
  }

  .detail__selection-checkbox {
    display: block;
    width: 100%;
    min-width: 0;
  }

  .detail__selection-checkbox::part(base) {
    display: flex;
    width: 100%;
    min-width: 0;
    align-items: center;
  }

  .detail__selection-checkbox::part(label) {
    flex: 1 1 auto;
    min-width: 0;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .detail__selection-checkbox--disabled {
    opacity: 0.5;
    pointer-events: none;
  }

  .detail__selection-text {
    display: inline-flex;
    flex-direction: column;
    min-width: 0;
    flex: 1 1 auto;
    line-height: 1.25;
  }

  .detail__selection-item-label {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .detail__selection-desc {
    display: block;
    font-size: var(--nile-type-scale-2, var(--ng-font-size-text-xs));
    color: var(--nile-colors-dark-500, var(--ng-colors-text-secondary));
    margin-top: 2px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .detail__selection-prefix,
  .detail__selection-suffix {
    display: inline-flex;
    align-items: center;
    flex: 0 0 auto;
    margin: 0 6px;
    color: var(--nile-colors-dark-500, var(--ng-colors-text-secondary));
  }

  .detail__selection-prefix { margin-left: 0; }
  .detail__selection-suffix { margin-right: 0; }

  .detail__selection-placeholder {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 4px 8px;
    box-sizing: border-box;
    opacity: 0.6;
  }

  .detail__selection-placeholder-bar {
    width: 16px;
    height: 16px;
    border-radius: 4px;
    background: linear-gradient(
      90deg,
      rgba(0,0,0,0.06) 0%,
      rgba(0,0,0,0.12) 50%,
      rgba(0,0,0,0.06) 100%
    );
    background-size: 200% 100%;
    animation: nile-detail-shimmer 1.4s linear infinite;
    flex: 0 0 auto;
  }

  .detail__selection-placeholder-label {
    flex: 1 1 auto;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: var(--nile-type-scale-2, var(--ng-font-size-text-xs));
    color: var(--nile-colors-dark-500, var(--ng-colors-text-secondary));
    background: linear-gradient(
      90deg,
      rgba(0,0,0,0.06) 0%,
      rgba(0,0,0,0.12) 50%,
      rgba(0,0,0,0.06) 100%
    );
    background-size: 200% 100%;
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    animation: nile-detail-shimmer 1.4s linear infinite;
  }

  @keyframes nile-detail-shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
  }

  .detail__selection-grid::-webkit-scrollbar {
    height: 8px;
  }

  .detail__selection-grid::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
  }

 /* ── Light variant ──────────────────────────────────────────────────────── */

  .detail--light .detail__header {
    background-color: var(--nile-colors-white-base, var(--ng-colors-bg-primary));
    padding: var(--nile-spacing-xl, var(--ng-spacing-xl))
      var(--nile-spacing-3xl, var(--ng-spacing-3xl));
  }

  .detail--light.detail--open .detail__header,
  .detail--light.detail--preview .detail__header {
    border-bottom: 1px solid var(--nile-colors-neutral-400, var(--ng-colors-border-secondary));
  }

  .detail--light .detail__content,
  .detail--light .detail__selection-content {
    padding: var(--nile-spacing-3xl, var(--ng-spacing-3xl));
  }
`;

export default [styles];