:root{color-scheme:dark;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5;--bg: #0f1117;--surface: #1a1d27;--surface-hover: #22262f;--border: rgba(255, 255, 255, .08);--text: #e3e3e3;--text-muted: #8b8fa3;--accent: #5b8af5;--accent-hover: #4a78e0;--danger: #e04040;--danger-hover: #c03030;--radius: 8px;--radius-sm: 6px}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100vh;background:var(--bg);color:var(--text)}.app{display:flex;flex-direction:column;min-height:100vh}.app-header{padding:16px 24px;border-bottom:1px solid var(--border);background:var(--surface)}.board-title{font-size:1.15rem;font-weight:600}.board{display:flex;gap:12px;padding:20px;overflow-x:auto;flex:1;align-items:flex-start}.column-wrapper{flex-shrink:0}.column-wrapper[draggable=true]{cursor:grab}.column-wrapper[draggable=true]:active{cursor:grabbing}.column-dragging{opacity:.4}.column-drop-target>.column{border-color:var(--accent)}.column{width:280px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);display:flex;flex-direction:column;max-height:calc(100vh - 100px)}.column-header{display:flex;align-items:center;gap:8px;padding:10px 12px;border-bottom:1px solid var(--border)}.column-title{font-size:.85rem;font-weight:600;flex:1;cursor:pointer;padding:2px 4px;border-radius:4px}.column-title:hover{background:var(--surface-hover)}.column-title-input{flex:1;font-size:.85rem;font-weight:600;background:var(--bg);color:var(--text);border:1px solid var(--accent);border-radius:4px;padding:2px 6px;outline:none}.column-count{font-size:.7rem;color:var(--text-muted);background:var(--bg);padding:1px 6px;border-radius:10px}.column-delete{opacity:0;transition:opacity .15s}.column-header:hover .column-delete{opacity:1}.card-list{padding:6px 8px;overflow-y:auto;flex:1;display:flex;flex-direction:column;gap:4px}.card-item{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:8px 10px;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:6px;transition:background .15s,border-color .15s;-webkit-user-select:none;user-select:none}.card-item:hover{background:var(--surface-hover);border-color:#ffffff24}.card-dragging{opacity:.3}.card-title{font-size:.82rem;flex:1}.card-desc-indicator{font-size:.7rem;color:var(--text-muted)}.drop-indicator{height:3px;background:var(--accent);border-radius:2px;margin:2px 0}.btn{border:none;border-radius:var(--radius-sm);padding:6px 14px;font-size:.8rem;font-weight:500;cursor:pointer;transition:background .15s}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-ghost{background:transparent;color:var(--text-muted)}.btn-ghost:hover{background:var(--surface-hover);color:var(--text)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:var(--danger-hover)}.add-card-btn{width:100%;background:transparent;border:none;color:var(--text-muted);padding:8px 12px;text-align:left;font-size:.8rem;cursor:pointer;border-radius:0 0 var(--radius) var(--radius);transition:background .15s,color .15s}.add-card-btn:hover{background:var(--surface-hover);color:var(--text)}.add-card-form{padding:6px 8px 8px}.add-card-input,.add-column-input{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);padding:8px 10px;font-size:.82rem;outline:none}.add-card-input:focus,.add-column-input:focus{border-color:var(--accent)}.add-card-actions{display:flex;gap:6px;margin-top:8px}.add-column-btn{width:280px;background:#ffffff0a;border:1px dashed var(--border);border-radius:var(--radius);color:var(--text-muted);padding:14px 16px;font-size:.82rem;cursor:pointer;transition:background .15s,color .15s}.add-column-btn:hover{background:#ffffff12;color:var(--text)}.add-column-form{width:280px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:10px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:flex-start;justify-content:center;padding-top:10vh;z-index:100}.modal{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);width:100%;max-width:520px;box-shadow:0 16px 48px #0006}.modal-header{display:flex;align-items:center;gap:8px;padding:16px 16px 8px}.modal-title-input{flex:1;font-size:1rem;font-weight:600;background:transparent;border:1px solid transparent;color:var(--text);padding:4px 6px;border-radius:4px;outline:none}.modal-title-input:focus{border-color:var(--accent);background:var(--bg)}.modal-close{font-size:1.3rem;line-height:1;padding:4px 8px}.modal-body{padding:8px 16px 16px}.modal-label{display:block;font-size:.75rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:6px}.modal-desc-input{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);padding:10px;font-size:.85rem;font-family:inherit;resize:vertical;outline:none}.modal-desc-input:focus{border-color:var(--accent)}.modal-footer{display:flex;gap:8px;padding:0 16px 16px}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#fff3}