:root{--rkb-bg: #f4f4f5;--rkb-fg: #18181b;--rkb-column-bg: #e4e4e7;--rkb-column-radius: 10px;--rkb-card-bg: #ffffff;--rkb-card-fg: #18181b;--rkb-card-radius: 6px;--rkb-card-shadow: 0 1px 3px rgba(0, 0, 0, .08), 0 1px 2px rgba(0, 0, 0, .04);--rkb-card-shadow-drag: 0 8px 24px rgba(0, 0, 0, .14), 0 2px 6px rgba(0, 0, 0, .08);--rkb-handle-color: #a1a1aa;--rkb-badge-bg: #d4d4d8;--rkb-badge-fg: #52525b;--rkb-header-fg: #3f3f46;--rkb-drop-highlight: rgba(99, 102, 241, .12);--rkb-drop-border: #6366f1;--rkb-empty-fg: #a1a1aa;--rkb-add-fg: #6366f1;--rkb-gap: 12px;--rkb-column-padding: 12px;--rkb-card-padding: 10px 12px;--rkb-font-size: .875rem;--rkb-title-size: .8125rem;--rkb-badge-size: .72rem;--rkb-duration: .14s;--rkb-ease: cubic-bezier(.16, 1, .3, 1)}.rkb-wrap{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}.rkb-board{display:grid;gap:var(--rkb-gap);padding:var(--rkb-gap);background:var(--rkb-bg);border-radius:var(--rkb-column-radius);box-sizing:border-box}.rkb-board[data-disabled=true]{pointer-events:none;opacity:.6}.rkb-column{display:flex;flex-direction:column;gap:8px;background:var(--rkb-column-bg);border-radius:var(--rkb-column-radius);padding:var(--rkb-column-padding);min-height:120px;transition:background var(--rkb-duration) var(--rkb-ease),box-shadow var(--rkb-duration) var(--rkb-ease);border:2px solid transparent;box-sizing:border-box}.rkb-column[data-drag-over=true]{background:var(--rkb-drop-highlight);border-color:var(--rkb-drop-border)}.rkb-column-header{display:flex;align-items:center;justify-content:space-between;gap:8px;padding-bottom:8px}.rkb-column-title{font-size:var(--rkb-title-size);font-weight:600;color:var(--rkb-header-fg);text-transform:uppercase;letter-spacing:.05em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.rkb-column-badge{display:inline-flex;align-items:center;justify-content:center;min-width:20px;height:20px;padding:0 5px;border-radius:999px;background:var(--rkb-badge-bg);color:var(--rkb-badge-fg);font-size:var(--rkb-badge-size);font-weight:600;flex-shrink:0;line-height:1}.rkb-cards{display:flex;flex-direction:column;gap:8px;flex:1}.rkb-card{display:flex;align-items:flex-start;gap:8px;background:var(--rkb-card-bg);color:var(--rkb-card-fg);border-radius:var(--rkb-card-radius);padding:var(--rkb-card-padding);font-size:var(--rkb-font-size);line-height:1.5;box-shadow:var(--rkb-card-shadow);cursor:grab;user-select:none;transition:opacity var(--rkb-duration) var(--rkb-ease),box-shadow var(--rkb-duration) var(--rkb-ease),transform var(--rkb-duration) var(--rkb-ease);box-sizing:border-box}.rkb-card:active{cursor:grabbing}.rkb-card[data-dragging=true]{opacity:.4;box-shadow:var(--rkb-card-shadow-drag);transform:scale(.98)}.rkb-card-handle{display:flex;align-items:center;flex-shrink:0;color:var(--rkb-handle-color);padding-top:2px}.rkb-card-content{flex:1;word-break:break-word}.rkb-empty{display:flex;align-items:center;justify-content:center;min-height:60px;border:2px dashed var(--rkb-handle-color);border-radius:var(--rkb-card-radius)}.rkb-empty-label{font-size:.75rem;color:var(--rkb-empty-fg)}.rkb-add-card{display:flex;align-items:center;gap:6px;padding:8px 10px;border-radius:var(--rkb-card-radius);color:var(--rkb-add-fg);font-size:.8125rem;font-weight:500;cursor:pointer;transition:background var(--rkb-duration) var(--rkb-ease)}.rkb-add-card:hover{background:#6366f114}.rkb-add-card-icon{font-size:1rem;line-height:1}.rkb-board[data-size=sm]{--rkb-font-size: .8rem;--rkb-title-size: .72rem;--rkb-card-padding: 7px 10px;--rkb-column-padding: 8px;--rkb-gap: 8px}.rkb-board[data-size=lg]{--rkb-font-size: .9375rem;--rkb-title-size: .875rem;--rkb-card-padding: 13px 16px;--rkb-column-padding: 16px;--rkb-gap: 16px}.rkb-board[data-tone=primary][data-tone]{--rkb-column-bg: #eef2ff;--rkb-drop-highlight: rgba(99, 102, 241, .15);--rkb-badge-bg: #c7d2fe;--rkb-badge-fg: #3730a3;--rkb-header-fg: #4338ca}[data-theme=dark] .rkb-board{--rkb-bg: #09090b;--rkb-fg: #fafafa;--rkb-column-bg: #18181b;--rkb-card-bg: #27272a;--rkb-card-fg: #fafafa;--rkb-handle-color: #52525b;--rkb-badge-bg: #3f3f46;--rkb-badge-fg: #a1a1aa;--rkb-header-fg: #a1a1aa;--rkb-drop-highlight: rgba(129, 140, 248, .15);--rkb-drop-border: #818cf8;--rkb-empty-fg: #52525b;--rkb-add-fg: #818cf8;--rkb-card-shadow: 0 1px 3px rgba(0, 0, 0, .3), 0 1px 2px rgba(0, 0, 0, .2);--rkb-card-shadow-drag: 0 8px 24px rgba(0, 0, 0, .5), 0 2px 6px rgba(0, 0, 0, .3)}[data-theme=dark] .rkb-board[data-tone=primary][data-tone]{--rkb-column-bg: #1e1b4b;--rkb-badge-bg: #312e81;--rkb-badge-fg: #c7d2fe;--rkb-header-fg: #a5b4fc;--rkb-drop-highlight: rgba(129, 140, 248, .2)}.rkb-card-desc{display:block;font-size:.78em;color:var(--rkb-handle-color);margin-top:3px;line-height:1.4}.rkb-card-label{display:inline-block;font-size:.68em;padding:1px 6px;border-radius:999px;background:var(--rkb-badge-bg);color:var(--rkb-badge-fg);margin-top:4px;font-weight:500}.rkb-card-priority{display:inline-block;width:8px;height:8px;border-radius:50%;flex-shrink:0;margin-top:3px}.rkb-card-priority[data-priority=low]{background:#22c55e}.rkb-card-priority[data-priority=medium]{background:#eab308}.rkb-card-priority[data-priority=high]{background:#f97316}.rkb-card-priority[data-priority=urgent]{background:#ef4444}.rkb-add-column{display:flex;align-items:center;justify-content:center;gap:6px;min-width:200px;padding:12px;border:2px dashed var(--rkb-handle-color);border-radius:var(--rkb-column-radius);background:transparent;color:var(--rkb-handle-color);cursor:pointer;font-size:var(--rkb-font-size);font-family:inherit;transition:border-color .14s,color .14s;align-self:flex-start}.rkb-add-column:hover{border-color:var(--rkb-add-fg);color:var(--rkb-add-fg)}.rkb-column[data-at-max=true]{opacity:.7}.rkb-column[data-collapsed=true] .rkb-cards,.rkb-column[data-collapsed=true] .rkb-add-card{display:none}.rkb-column-collapse-btn{background:none;border:none;cursor:pointer;padding:2px 4px;color:var(--rkb-handle-color);border-radius:3px;display:flex;align-items:center;transition:color .14s}.rkb-column-collapse-btn:hover{color:var(--rkb-header-fg)}@media(prefers-reduced-motion:reduce){.rkb-card,.rkb-column{transition:none}}