/* project-board.css — styles for the Board tab kanban (.kb-) and the redesigned
   Planning tab layout (.pl-). Namespaced so it never collides with existing
   .ptd-/.todo-/.ms- rules. Load AFTER app.css + project-todos.css + project-detail.css.
   Reuses the design tokens (--primary, --ink, --line, --pos, --mono…). */

.kb { display: grid; gap: 11px; }
.kb-viewbar { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; padding: 10px 12px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-sm); }
.kb-viewmeta { font-size: 12px; color: var(--muted); font-weight: 500; }

/* ---------------- board toolbar ---------------- */
.kb-bar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.kb-bar .kb-spacer { flex: 1; }
.kb-filt { display: inline-flex; align-items: center; gap: 7px; }
.kb-filt .kb-fl { font-size: 9.5px; text-transform: uppercase; letter-spacing: .06em; color: var(--faint); font-weight: 700; }
.kb-toggle { display: inline-flex; align-items: center; gap: 7px; font-size: 11.5px; color: var(--muted); cursor: pointer; user-select: none; padding: 4px 9px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); }
.kb-toggle:hover { border-color: var(--line-2); color: var(--ink-2); }
.kb-toggle input { width: 14px; height: 14px; accent-color: var(--primary); margin: 0; }
.kb-msfilter { height: 28px; padding: 0 8px; border: 1px solid var(--line-2); border-radius: 6px; font: inherit; font-size: 12px; color: var(--ink); background: var(--surface); }

/* ---------------- the grid ---------------- */
.kb-scroll { overflow-x: auto; overflow-y: hidden; border: 1px solid var(--line); border-radius: 10px; background: var(--surface-2); }
.kb-grid {
  --kb-card-w: 190px;
  display: grid;
  grid-template-columns: var(--rail-w, 170px) repeat(var(--cols, 6), var(--kb-card-w));
  min-width: max-content;
  position: relative;
}

/* corner + column headers (sticky top) */
.kb-corner, .kb-colhead { position: sticky; top: 0; z-index: 3; background: var(--surface); border-bottom: 1px solid var(--line-2); }
.kb-corner { left: 0; z-index: 5; border-right: 1px solid var(--line-2); display: flex; align-items: flex-end; padding: 10px 12px; }
.kb-corner .kb-corner-l { font-size: 9.5px; text-transform: uppercase; letter-spacing: .07em; color: var(--faint); font-weight: 700; }
.kb-colhead { display: flex; align-items: center; gap: 8px; padding: 11px 13px; border-left: 1px solid var(--line); }
.kb-colhead .kb-sdot { width: 9px; height: 9px; border-radius: 50%; flex: none; box-shadow: 0 0 0 3px var(--kb-dot-ring, transparent); }
.kb-colhead .kb-cname { font-size: 11.5px; font-weight: 700; color: var(--ink); letter-spacing: -.005em; white-space: nowrap; }
.kb-colhead .kb-ccount { margin-left: auto; font-family: var(--mono); font-size: 10.5px; font-weight: 600; color: var(--muted); background: var(--surface-3); border-radius: 20px; padding: 1px 7px; min-width: 22px; text-align: center; }
.kb-colhead.kb-done-col { background: var(--pos-soft); }

/* lane rail (sticky left) */
.kb-rail { position: sticky; left: 0; z-index: 2; background: var(--surface); border-right: 1px solid var(--line-2); border-top: 1px solid var(--line); padding: 12px 12px 10px; display: grid; gap: 8px; align-content: start; }
.kb-grid .kb-lane:nth-of-type(even) .kb-rail { background: var(--surface-2); }
.kb-rail-head { display: flex; align-items: center; gap: 7px; }
.kb-rail-collapse { width: 22px; height: 22px; margin-left: -5px; }
.kb-rail-collapse .open { transform: rotate(90deg); }
.kb-rail-glyph { width: 10px; height: 10px; border-radius: 3px; background: var(--primary); flex: none; }
.kb-rail-name { font-size: 12.5px; font-weight: 700; color: var(--ink); letter-spacing: -.01em; min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.kb-rail-name.ghosted { color: var(--faint); font-style: italic; }
.kb-rail-delete { margin-left: auto; width: 24px; height: 24px; opacity: .72; }
.kb-rail-delete:not(:disabled):hover { color: var(--neg); opacity: 1; }
.kb-rail-meta { display: flex; align-items: center; gap: 8px; }
.kb-rail-count { font-family: var(--mono); font-size: 10.5px; font-weight: 600; color: var(--muted); }
.kb-rail-bar { flex: 1; height: 5px; border-radius: 3px; background: var(--surface-3); overflow: hidden; }
.kb-rail-bar > span { display: block; height: 100%; border-radius: 3px; transition: width .3s; }
.kb-rail-add { display: inline-flex; align-items: center; gap: 5px; align-self: start; margin-top: 1px; border: 0; background: transparent; cursor: pointer; font: inherit; font-size: 11px; font-weight: 500; color: var(--faint); padding: 3px 5px; margin-left: -5px; border-radius: 5px; }
.kb-rail-add { white-space: nowrap; }
.kb-rail-add:hover { background: var(--surface-3); color: var(--primary-strong); }

/* a single lane is a display:contents wrapper so its children land on the grid */
.kb-lane { display: contents; }

/* droppable cell */
.kb-cell { width: var(--kb-card-w); min-width: 0; box-sizing: border-box; border-left: 1px solid var(--line); border-top: 1px solid var(--line); padding: 8px 0; display: grid; gap: 8px; align-content: start; min-height: 78px; transition: background .12s; }
.kb-cell.kb-collapsed { min-height: 42px; padding: 0; background: var(--surface-2); }
.kb-grid .kb-lane:nth-of-type(even) .kb-cell { background: rgba(247,249,252,.55); }
.kb-cell.kb-done-col { background: rgba(231,245,236,.4); }

/* drag affordances */
body.kb-dragging .kb-cell { box-shadow: inset 0 0 0 1px var(--line-2); }
.kb-cell.kb-over { background: var(--primary-soft) !important; box-shadow: inset 0 0 0 2px var(--primary); border-radius: 6px; }
.kb-cell-hint { display: none; align-items: center; justify-content: center; gap: 6px; height: 100%; min-height: 60px; border: 1.5px dashed var(--line-2); border-radius: 7px; color: var(--faint); font-size: 11px; font-weight: 500; }
.kb-cell.kb-empty .kb-cell-hint { display: flex; }
body.kb-dragging .kb-cell.kb-empty .kb-cell-hint { border-color: var(--primary); color: var(--primary-strong); }
.kb-cell.kb-over .kb-cell-hint { border-color: var(--primary); color: var(--primary-strong); background: rgba(255,255,255,.6); }

/* ---------------- card ---------------- */
.kb-card { position: relative; width: 100%; min-width: 0; max-width: 100%; box-sizing: border-box; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); padding: 8px 10px 8px 12px; display: grid; gap: 7px; cursor: grab; box-shadow: var(--shadow-sm); transition: border-color .12s, box-shadow .12s, transform .06s; }
.kb-card::before { content: ''; position: absolute; left: 0; top: 8px; bottom: 8px; width: 3px; border-radius: 3px; background: var(--kb-accent, var(--line-2)); }
.kb-card:hover { border-color: var(--line-2); box-shadow: var(--shadow-md); }
.kb-card:active { cursor: grabbing; }
.kb-card.kb-dragging { opacity: .4; box-shadow: none; }
.kb-card.kb-done { background: var(--surface-2); }
.kb-card-head { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: start; gap: 7px; }
.kb-card-number { display: inline-grid; place-items: center; min-width: 22px; height: 18px; padding: 0 5px; border-radius: 5px; background: var(--surface-3); color: var(--muted); font-family: var(--mono); font-size: 10.5px; font-weight: 700; border: 1px solid var(--line); }
.kb-card-title { min-width: 0; font-size: 12px; font-weight: 600; color: var(--ink); line-height: 1.35; text-wrap: pretty; overflow-wrap: anywhere; }
.kb-card.kb-done .kb-card-title { color: var(--muted); text-decoration: line-through; text-decoration-color: var(--line-2); }
.kb-card-meta { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; min-width: 0; overflow: hidden; }
.kb-chip { display: inline-flex; align-items: center; gap: 5px; height: 20px; min-width: 0; max-width: 100%; padding: 0 7px; border-radius: 5px; font-size: 10.5px; font-weight: 500; color: var(--muted); background: var(--surface-3); border: 1px solid var(--line); }
.kb-chip .kb-dia { width: 8px; height: 8px; background: var(--primary); transform: rotate(45deg); border-radius: 1.5px; flex: none; }
.kb-chip span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* empty board */
.kb-blank { padding: 40px; text-align: center; color: var(--muted); font-size: 12.5px; }

/* collapsed Done column */
.kb-grid.kb-hide-done { --cols: 5; }

/* mini live count in panel header */
.kb-headcount { font-family: var(--mono); }

/* drawer reuse: bump z so it sits above everything */
.kb-drawer { z-index: 43; width: min(760px, 100vw); }
.kb-drawer-overlay { z-index: 42; }
.kb-section-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 7px; }
.kb-link-list, .kb-message-list { display: grid; gap: 8px; }
.kb-link-row { display: grid; grid-template-columns: minmax(240px, 1fr) minmax(120px, 180px) 30px 30px; align-items: center; gap: 7px; }
.kb-link-row .inp { min-width: 0; }
.kb-link-row .icon-btn { width: 30px; height: 30px; }
.kb-link-row .icon-btn.disabled { opacity: .45; cursor: default; }
.kb-thread-section { border-top: 1px solid var(--line); padding-top: 12px; }
.kb-message { border: 1px solid var(--line); border-radius: 8px; background: var(--surface-2); padding: 9px 10px; display: grid; gap: 6px; }
.kb-message-meta { display: flex; align-items: center; gap: 8px; min-width: 0; color: var(--muted); font-size: 11px; }
.kb-message-meta strong { color: var(--ink); font-size: 12px; }
.kb-message-meta .icon-btn { margin-left: auto; width: 24px; height: 24px; }
.kb-message-body { color: var(--ink-2); font-size: 12.5px; line-height: 1.45; white-space: pre-wrap; overflow-wrap: anywhere; }
.kb-message-compose { display: grid; gap: 8px; margin-top: 9px; }
.kb-message-compose .btn { justify-self: end; }

@media (max-width: 720px) {
  .kb-link-row { grid-template-columns: minmax(0, 1fr) 30px 30px; }
  .kb-link-row .inp:nth-child(2) { grid-column: 1 / -1; grid-row: 2; }
}
/* ---------------- redesigned Planning tab ---------------- */
.pl-sectionbar { display: flex; align-items: center; gap: 11px; flex-wrap: wrap; padding: 11px 14px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.pl-seclabel { font-size: 9.5px; text-transform: uppercase; letter-spacing: .07em; color: var(--faint); font-weight: 700; }
.pl-rename { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; color: var(--ink-2); white-space: nowrap; }
.pl-sectionbar .segmented button { white-space: nowrap; }
.pl-cols { grid-template-columns: minmax(320px, 1.15fr) minmax(280px, 1fr) minmax(230px, .85fr); align-items: start; }
.pl-tab .req-block { max-height: 460px; overflow: auto; margin: 0; }

.pl-docs { display: grid; }
.pl-doc { display: flex; align-items: center; gap: 12px; padding: 11px 14px; border-top: 1px solid var(--line); }
.pl-doc:first-child { border-top: 0; }
.pl-doc:hover { background: var(--surface-2); }
.pl-doc-ic { width: 34px; height: 34px; border-radius: 8px; flex: none; display: grid; place-items: center; background: var(--primary-soft); color: var(--primary-strong); }
.pl-doc-meta { flex: 1; min-width: 0; }
.pl-doc-name { font-size: 12.5px; font-weight: 600; color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pl-doc-sub { display: flex; align-items: center; gap: 9px; margin-top: 3px; font-size: 11px; }
.pl-doc-sub .chip { height: 18px; font-size: 10px; }

@media (max-width: 900px) {
  .pl-cols { grid-template-columns: minmax(0, 1fr); }
}