/* Task tracking: kanban boards, task cards, task page and dialog. */
@layer components {
  .nav-count {
    display: inline-grid;
    place-items: center;
    min-inline-size: 1.25rem;
    block-size: 1.25rem;
    margin-inline-start: var(--space-1);
    padding-inline: .3rem;
    border-radius: 999px;
    background: var(--color-accent);
    color: var(--color-accent-text);
    font-size: .75rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
  }

  .board-head {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    margin-block-end: var(--space-4);
  }

  /* Board */
  .kanban {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-3);
    align-items: start;

    @media (width < 48rem) { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    @media (width < 30rem) {
      grid-template-columns: minmax(0, 1fr);
      & .kanban-col { min-block-size: 0; }
    }
  }

  .kanban-col {
    --col-hue: 250;
    --col-tint: light-dark(oklch(62% .15 var(--col-hue)), oklch(66% .14 var(--col-hue)));

    display: flex;
    flex-direction: column;
    min-inline-size: 0;
    min-block-size: 12rem;
    padding: var(--space-2);
    background: color-mix(in oklab, var(--col-tint) 18%, var(--color-surface-subtle));
    border: 1px solid color-mix(in oklab, var(--col-tint) 38%, var(--color-line));
    border-radius: var(--radius-l);

    &[data-status="backlog"] { --col-hue: 235; --col-tint: light-dark(oklch(60% .07 var(--col-hue)), oklch(66% .07 var(--col-hue))); }
    &[data-status="in_progress"] { --col-hue: 262; }
    &[data-status="review"] { --col-hue: 310; }
    &[data-status="done"] { --col-hue: 180; }

    & .kanban-count {
      background: color-mix(in oklab, var(--col-tint) 22%, var(--color-surface));
      border-color: color-mix(in oklab, var(--col-tint) 45%, var(--color-line));
    }
  }

  .kanban-col-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-2) var(--space-2);
    font-size: .9375rem;
    font-weight: 600;

    & > span:first-child {
      display: inline-flex;
      align-items: center;
      gap: var(--space-2);

      &::before {
        content: "";
        inline-size: .5rem;
        block-size: .5rem;
        border-radius: 50%;
        background: var(--col-tint);
      }
    }
  }

  .kanban-count {
    min-inline-size: 1.5rem;
    padding: 0 .4rem;
    border-radius: 999px;
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    color: var(--color-text-muted);
    font-size: .75rem;
    font-weight: 600;
    text-align: center;
    font-variant-numeric: tabular-nums;
  }

  .kanban-list {
    display: flex;
    flex: 1;
    flex-direction: column;
    gap: var(--space-2);
    min-block-size: 4rem;
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .kanban-more {
    display: block;
    margin: var(--space-2) var(--space-1) 0;
    font-size: .875rem;
  }

  /* Card */
  .task-card {
    position: relative;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-3);
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-m);
    box-shadow: var(--shadow-card);
    cursor: pointer;
    user-select: none;
    -webkit-touch-callout: none;
    transition: border-color var(--duration), box-shadow var(--duration), opacity var(--duration);

    & p { margin: 0; }
    &:hover { border-color: color-mix(in oklab, var(--color-accent) 45%, var(--color-line)); }
    &:not(.readonly) { cursor: grab; }
    &.readonly { background: color-mix(in oklab, var(--color-surface) 70%, var(--color-surface-subtle)); }
    &.is-pressed { box-shadow: var(--shadow-raised); }
    &.is-dragging { opacity: .35; border-style: dashed; box-shadow: none; }
  }

  .task-ghost {
    position: fixed;
    inset: 0 auto auto 0;
    z-index: 1000;
    margin: 0;
    pointer-events: none;
    list-style: none;
    rotate: 2deg;
    box-shadow: var(--shadow-raised);
    cursor: grabbing;
  }

  body.kanban-dragging, body.kanban-dragging * { cursor: grabbing !important; user-select: none; }

  .task-card-head {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .task-card-title {
    flex: 1;
    min-inline-size: 0;
    color: var(--color-text);
    font-weight: 600;
    line-height: 1.35;
    text-decoration: none;
    overflow-wrap: anywhere;
    -webkit-user-drag: none;

    .task-card:hover & { color: var(--color-accent); }
  }

  .task-card-project, .task-card-parent {
    overflow: hidden;
    color: var(--color-text-muted);
    font-size: .8125rem;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .task-card-parent a { color: inherit; -webkit-user-drag: none; }
  .task-card-parent a:hover { color: var(--color-accent); }

  .task-card-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-1) var(--space-2);
    min-block-size: 1.75rem;
  }

  .task-card-hint {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    padding-block-start: var(--space-2);
    border-block-start: 1px solid var(--color-line);
    color: var(--color-ok);
    font-size: .8125rem;
    font-weight: 500;
  }

  .chip {
    display: inline-flex;
    align-items: center;
    gap: .25rem;
    min-block-size: 1.5rem;
    padding: 0 .5rem;
    border-radius: 999px;
    background: var(--color-surface-subtle);
    border: 1px solid var(--color-line);
    color: var(--color-text-muted);
    font-size: .8125rem;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;

    & svg { inline-size: .9rem; block-size: .9rem; }
  }

  :is(.chip, .task-due).overdue { --due-bg: var(--color-danger-soft); --due-fg: var(--color-danger); }
  :is(.chip, .task-due).soon { --due-bg: color-mix(in oklab, #f79009 16%, var(--color-surface)); --due-fg: light-dark(#93370d, #fec84b); }
  .chip:is(.overdue, .soon) { background: var(--due-bg); color: var(--due-fg); border-color: transparent; font-weight: 600; }

  /* Due date chip on cards: compact datepicker trigger */
  .task-due .date-ui.compact { inline-size: auto; }
  .task-due button.date-trigger {
    inline-size: auto;
    min-block-size: 1.5rem;
    gap: .25rem;
    padding: 0 .5rem;
    border-color: var(--color-line);
    border-radius: 999px;
    background: var(--color-surface-subtle);
    color: var(--color-text-muted);
    font-size: .8125rem;

    & svg { inline-size: .9rem; block-size: .9rem; }
    &:hover:not(:disabled) { background: var(--color-surface-subtle); border-color: var(--color-accent); color: var(--color-text); }
  }
  .task-due:is(.overdue, .soon) button.date-trigger { background: var(--due-bg); color: var(--due-fg); border-color: transparent; font-weight: 600; }
  .task-due:is(.overdue, .soon) button.date-trigger svg { color: currentColor; }
  .task-due.no-due button.date-trigger { padding-inline: .375rem; opacity: .6; }
  .task-due.no-due .date-value { display: none; }
  .task-card:is(:hover, :focus-within) .task-due.no-due button.date-trigger { opacity: 1; }
  /* Native fallback when the page calendar is unavailable */
  .task-due > input[type="date"] { inline-size: auto; min-block-size: 1.75rem; padding: 0 .375rem; font-size: .8125rem; }

  /* Priority: "", "!", "!!", "!!!" */
  .task-prio {
    display: inline-grid;
    place-items: center;
    flex-shrink: 0;
    min-inline-size: 1.75rem;
    block-size: 1.5rem;
    padding: 0 .3rem;
    border-radius: var(--radius-s);
    font-size: .875rem;
    font-weight: 800;
    letter-spacing: -.04em;
    line-height: 1;
    background: var(--color-surface-subtle);
    color: var(--color-text-muted);

    &.prio-1 { background: var(--color-accent-soft); color: var(--color-accent); }
    &.prio-2 { background: color-mix(in oklab, #f79009 18%, var(--color-surface)); color: light-dark(#93370d, #fec84b); }
    &.prio-3 { background: var(--color-danger); color: var(--color-surface); }
  }

  button.task-prio {
    min-block-size: 1.5rem;
    border: 1px solid transparent;
    font-weight: 800;

    &:hover:not(:disabled) { border-color: var(--color-accent); }
    &.prio-0 { opacity: 0; background: transparent; border-color: var(--color-line); }
    &.prio-1:hover:not(:disabled) { background: var(--color-accent-soft); color: var(--color-accent); }
    &.prio-2:hover:not(:disabled) { background: color-mix(in oklab, #f79009 18%, var(--color-surface)); color: light-dark(#93370d, #fec84b); }
    &.prio-3:hover:not(:disabled) { background: var(--color-danger); color: var(--color-surface); }
    &.prio-0:hover:not(:disabled) { background: var(--color-surface-subtle); color: var(--color-text-muted); }
  }
  .task-card:is(:hover, :focus-within) button.task-prio.prio-0,
  button.task-prio.prio-0:focus-visible,
  button.task-prio.prio-0[aria-expanded="true"] { opacity: .7; }
  @media (hover: none) { button.task-prio.prio-0 { opacity: .45; } }

  .prio-menu {
    position: fixed;
    inset: auto;
    margin: 0;
    inline-size: 13rem;
    padding: var(--space-1);
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-m);
    box-shadow: var(--shadow-raised);

    & button {
      inline-size: 100%;
      justify-content: flex-start;
      gap: var(--space-3);
      min-block-size: 2.25rem;
      padding-inline: var(--space-2);
      background: transparent;
      color: var(--color-text);
      font-weight: 500;

      &:hover:not(:disabled), &:focus-visible { background: var(--color-surface-subtle); color: var(--color-text); }
      &[aria-checked="true"] { background: var(--color-accent-soft); }
    }
  }

  .task-assignee {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    min-inline-size: 0;
    margin-inline-start: auto;
    color: var(--color-text-muted);
    font-size: .8125rem;

    & .avatar { inline-size: 1.5rem; block-size: 1.5rem; margin: 0; font-size: .75rem; flex-shrink: 0; }
  }
  .task-assignee-name { overflow: hidden; max-inline-size: 9rem; text-overflow: ellipsis; white-space: nowrap; }
  .small-badge { padding: 0 .375rem; font-size: .6875rem; }

  /* Task dialog */
  dialog.task-dialog {
    inline-size: min(44rem, 100% - 2rem);
    max-block-size: min(92dvh, 60rem);
    padding-block-start: var(--space-4);
  }
  .task-dialog-close {
    position: sticky;
    inset-block-start: 0;
    z-index: 1;
    display: flex;
    justify-content: flex-end;
    block-size: 0;

    & button { inline-size: 2rem; padding: 0; }
  }

  /* Task page */
  .crumbs ol {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-1);
    margin: 0 0 var(--space-3);
    padding: 0;
    list-style: none;
    font-size: .875rem;

    & li { display: flex; gap: var(--space-1); min-inline-size: 0; }
    & li + li::before { content: "›"; color: var(--color-text-muted); }
    & a { overflow: hidden; max-inline-size: 18rem; text-overflow: ellipsis; white-space: nowrap; }
  }

  .task-view-head {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-block-end: var(--space-4);
    padding-inline-end: var(--space-6);

    & h1, & h2 { margin: 0; font-size: 1.5rem; overflow-wrap: anywhere; }
    & .row { margin: 0; }
  }

  .task-view > .hint { margin-block-end: var(--space-4); }
  .task-hint { align-items: center; justify-content: space-between; flex-wrap: wrap; }
  .task-description { margin-block-start: var(--space-3); white-space: pre-line; }
  .task-meta { margin-block-start: var(--space-4); }

  .task-form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(10rem, 100%), 1fr));
    gap: var(--space-4);
  }

  .option-filter { margin-block-end: var(--space-1); }
  .select-picker [hidden], select option[hidden] { display: none; }

  .task-section {
    margin-block-start: var(--space-5);
    padding-block-start: var(--space-4);
    border-block-start: 1px solid var(--color-line);

    & > h2 { margin-block-end: var(--space-3); }
  }
  .task-section.danger-zone { border-block-start-color: color-mix(in oklab, var(--color-danger) 35%, var(--color-line)); }

  .subtask-list {
    display: flex;
    flex-direction: column;
    margin: 0;
    padding: 0;
    list-style: none;
  }
  .subtask {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2);
    padding-block: var(--space-2);

    & + .subtask { border-block-start: 1px solid var(--color-line); }
    & > a { flex: 1 1 12rem; min-inline-size: 0; overflow-wrap: anywhere; }
    & .task-assignee { margin-inline-start: 0; }
  }

  .subtask-new {
    margin-block-start: var(--space-3);

    & > summary { list-style: none; inline-size: fit-content; }
    & > summary::-webkit-details-marker { display: none; }
  }

  .badge.status-in_progress { background: var(--color-accent-soft); color: var(--color-accent); border-color: transparent; }
  .badge.status-review { background: color-mix(in oklab, #f79009 16%, var(--color-surface)); color: light-dark(#93370d, #fec84b); border-color: transparent; }
  .badge.status-done { background: var(--color-ok-soft); color: var(--color-ok); border-color: transparent; }

  @media (forced-colors: active) {
    .task-card.is-dragging { outline: 2px dashed CanvasText; }
    .chip:is(.overdue, .soon), .task-prio { border: 1px solid CanvasText; }
  }

  @media (prefers-reduced-motion: reduce) {
    .task-card, .task-ghost { transition: none; rotate: 0deg; }
  }
}