/* Kanban board (.kb-). The project view becomes a fixed-height flex column so
   the board scrolls sideways and every column scrolls on its own. */
.view.kb-view { display: flex; flex-direction: column; overflow: hidden; }
.view.kb-view > .project-content { flex: 1; min-height: 0; display: flex; flex-direction: column; }

.kb-banner { margin: 12px 20px 0; display: flex; align-items: center; gap: 8px; padding: 9px 12px; border-radius: var(--r-md); background: var(--warning-soft); color: var(--text); font-size: 13px; }
.kb-banner .ico { color: var(--warning); }

.kb-board {
  --kb-col-bg: color-mix(in srgb, var(--text) 3.5%, var(--bg));
  flex: 1; min-height: 0; display: flex; align-items: flex-start; gap: 12px;
  padding: 16px 20px 18px; overflow-x: auto; overflow-y: hidden; user-select: none; -webkit-user-select: none;
}

/* ---------- Column ---------- */
.kb-col {
  flex: 0 0 300px; width: 300px; max-height: 100%; display: flex; flex-direction: column;
  background: var(--kb-col-bg); border: 1px solid var(--line); border-radius: var(--r-lg);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.kb-col-head { display: flex; align-items: center; gap: 6px; min-height: 44px; padding: 8px 8px 6px 14px; }
.kb-col-name { font-size: 13.5px; font-weight: 600; color: var(--text); min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; cursor: default; }
.kb-done-ico { display: inline-grid; color: var(--success); }
.kb-count { display: inline-flex; align-items: center; gap: 3px; height: 20px; padding: 0 7px; border-radius: var(--r-pill); font-size: 12px; font-weight: 500; color: var(--text-2); background: var(--surface-3); font-variant-numeric: tabular-nums; margin-right: auto; }
.kb-count .ico { width: 12px; height: 12px; }
.kb-count.is-warn { background: var(--warning-soft); color: var(--warning); }
.kb-count.is-over { background: var(--danger-soft); color: var(--danger); }
.kb-col.is-wip-warn { border-color: color-mix(in srgb, var(--warning) 55%, var(--line)); box-shadow: inset 0 3px 0 var(--warning); }
.kb-col.is-wip-warn .kb-col-name { color: var(--warning); }
.kb-col.is-wip-over { border-color: color-mix(in srgb, var(--danger) 55%, var(--line)); box-shadow: inset 0 3px 0 var(--danger); }
.kb-col.is-wip-over .kb-col-name { color: var(--danger); }
.kb-col-btn { opacity: 0; transition: opacity var(--dur) var(--ease); }
.kb-col:hover .kb-col-btn, .kb-col-btn:focus-visible, .kb-col-btn[aria-expanded="true"] { opacity: 1; }
@media (hover: none) { .kb-col-btn { opacity: 1; } }
.kb-rename { height: 28px; padding: 0 7px; font-weight: 600; font-size: 13.5px; flex: 1; min-width: 0; }
.kb-col.is-drop-target { background: color-mix(in srgb, var(--brand) 6%, var(--kb-col-bg)); border-color: color-mix(in srgb, var(--brand) 45%, var(--line)); }

.kb-list { flex: 0 1 auto; min-height: 12px; overflow-y: auto; overscroll-behavior: contain; padding: 2px 8px 8px; display: flex; flex-direction: column; gap: 8px; }

/* ---------- Card ---------- */
.kb-card {
  flex: none; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-md);
  padding: 10px 11px 10px; box-shadow: var(--shadow-1); cursor: grab; touch-action: manipulation;
  transition: transform 140ms var(--ease), box-shadow 140ms var(--ease), border-color 140ms var(--ease);
}
.kb-card:hover { transform: translateY(-1px); box-shadow: var(--shadow-2); border-color: var(--line-strong); }
.kb-card:focus-visible { outline: 2px solid var(--brand); outline-offset: 1px; }
.kb-card.is-selected { border-color: var(--brand); box-shadow: 0 0 0 2px var(--brand-ring), var(--shadow-1); background: color-mix(in srgb, var(--brand) 5%, var(--surface)); }
.kb-card.is-dragging { display: none; }
.kb-card-top { display: flex; align-items: center; gap: 7px; }
.kb-card-top .drop-check.is-readonly { pointer-events: none; }
.kb-card-flags { margin-left: auto; display: inline-flex; align-items: center; gap: 6px; }
.kb-star { display: inline-grid; color: var(--warning); }
.kb-star .ico { width: 14px; height: 14px; fill: currentColor; }
.kb-card-title { margin-top: 6px; font-size: 13.5px; font-weight: 500; line-height: 1.42; color: var(--text); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; overflow-wrap: anywhere; }
.kb-card.is-done .kb-card-title { color: var(--text-2); }
.kb-card-tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 8px; }
.kb-card-foot { display: flex; align-items: center; gap: 6px; margin-top: 10px; }
.kb-card-meta { display: flex; flex-wrap: wrap; gap: 4px; flex: 1; min-width: 0; }
.kb-card-meta .chip { height: 20px; padding: 0 6px; font-size: 11.5px; }

/* ---------- Drag & drop ---------- */
.kb-placeholder { flex: none; border-radius: var(--r-md); background: color-mix(in srgb, var(--brand) 7%, transparent); border: 1.5px dashed color-mix(in srgb, var(--brand) 45%, transparent); }
.kb-placeholder.is-entering { animation: kb-ph-in 160ms var(--ease); }
@keyframes kb-ph-in { from { height: 0; opacity: 0; } }
.kb-ghost { position: fixed; left: 0; top: 0; z-index: 200; margin: 0; pointer-events: none; cursor: grabbing; box-shadow: var(--shadow-drag); border-color: var(--brand-soft-2); will-change: transform; }
.kb-ghost.is-landing { box-shadow: var(--shadow-2); }
body.kb-is-dragging, body.kb-is-dragging * { cursor: grabbing !important; user-select: none; }
body.kb-is-dragging .kb-card:hover { transform: none; box-shadow: var(--shadow-1); }
body.kb-is-sweeping { user-select: none; }
.kb-marquee { position: fixed; z-index: 150; pointer-events: none; border: 1px solid var(--brand); border-radius: 3px; background: color-mix(in srgb, var(--brand) 12%, transparent); }

/* ---------- Empty, add, older, composer ---------- */
.kb-empty { display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 18px 12px; text-align: center; border: 1.5px dashed var(--line-strong); border-radius: var(--r-md); color: var(--text-3); font-size: 12.5px; }
.kb-empty .ico { width: 18px; height: 18px; }
.kb-list:has(.kb-placeholder) .kb-empty { display: none; }
.kb-add, .kb-older { flex: none; display: flex; align-items: center; gap: 6px; height: 34px; margin: 0 8px 8px; padding: 0 8px; border-radius: var(--r-sm); color: var(--text-2); font-size: 13px; font-weight: 500; transition: background var(--dur), color var(--dur); }
.kb-add:hover, .kb-older:hover { background: var(--hover); color: var(--text); }
.kb-older { justify-content: center; margin-top: -2px; color: var(--text-3); font-size: 12.5px; }
.kb-composer { flex: none; margin: 0 8px 8px; }
.kb-composer-input { display: block; width: 100%; min-height: 58px; resize: none; padding: 9px 11px; border-radius: var(--r-md); border: 1px solid var(--brand); background: var(--surface); box-shadow: 0 0 0 3px var(--brand-ring); color: var(--text); font-size: 13.5px; line-height: 1.45; outline: none; }
.kb-composer-input::placeholder { color: var(--text-3); }
.kb-composer .row { margin-top: 8px; }
.kb-newcol { flex: 0 0 280px; display: flex; align-items: center; gap: 6px; height: 44px; padding: 0 14px; border-radius: var(--r-lg); border: 1.5px dashed var(--line-strong); color: var(--text-2); font-weight: 500; font-size: 13.5px; transition: background var(--dur), border-color var(--dur), color var(--dur); }
button.kb-newcol:hover { background: var(--kb-col-bg); border-color: var(--brand); color: var(--brand-text); }
.kb-newcol.is-open { display: block; height: auto; padding: 10px; border-style: solid; border-width: 1px; border-color: var(--line); background: var(--kb-col-bg); }
.kb-wip-pop { padding: 14px; width: 270px; }

@media (max-width: 860px) {
  /* Mobile: the page scrolls vertically, the board only sideways; columns take their natural height. */
  .view.kb-view { display: block; overflow: auto; }
  .kb-board { overflow-y: visible; }
  .kb-col { max-height: none; }
  .kb-list { overflow-y: visible; }
  .kb-banner { margin: 10px 16px 0; }
  .kb-board { padding: 12px 16px 14px; gap: 10px; scroll-snap-type: x mandatory; scroll-padding: 16px; }
  .kb-col { flex-basis: calc(100vw - 52px); width: calc(100vw - 52px); scroll-snap-align: start; }
  .kb-newcol { flex-basis: calc(100vw - 52px); scroll-snap-align: start; }
  .kb-col-btn { opacity: 1; }
}