:root{--bg: #1a202c;--column-bg: #2d3748;--card-bg: #4a5568;--card-border: #2d3748;--text: #f7fafc;--muted: #a0aec0;--accent: #63b3ed;--danger: #fc8181;--success: #68d391;--radius: 6px;font-family:Inter,system-ui,sans-serif;color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);min-height:100vh}.app{padding:24px}.board-header h1{margin:0 0 4px}.board-header p{color:var(--muted);margin:0 0 24px}.board-error{background:#fc81811a;border:1px solid var(--danger);border-radius:var(--radius);padding:8px 12px;margin-bottom:16px;display:flex;justify-content:space-between;align-items:center}.board-empty{color:var(--muted)}.board-columns{display:grid;grid-template-columns:repeat(3,minmax(280px,1fr));gap:16px}.column{background:var(--column-bg);border-radius:var(--radius);padding:12px;display:flex;flex-direction:column;min-height:360px;transition:outline .15s;outline:2px solid transparent}.column--over{outline-color:var(--accent)}.column-header{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:12px}.column-header h2{font-size:14px;text-transform:uppercase;letter-spacing:.04em;margin:0;color:var(--muted)}.column-count{background:var(--bg);color:var(--muted);border-radius:999px;padding:2px 8px;font-size:12px}.card-list{list-style:none;margin:0 0 8px;padding:0;display:flex;flex-direction:column;gap:8px;flex:1}.card{background:var(--card-bg);border-radius:var(--radius);padding:10px 12px;display:flex;flex-direction:column;gap:4px;cursor:grab;transition:opacity .15s,transform .15s}.card[draggable=true]:active{cursor:grabbing;transform:scale(1.01)}.card--pending{opacity:.6}.card-title{font-weight:500}.card-assignee{font-size:11px;color:var(--muted)}.card-actions{display:flex;gap:4px;justify-content:flex-end}.card-actions button{background:transparent;color:var(--muted);border:none;cursor:pointer;padding:2px 6px;border-radius:var(--radius)}.card-actions button:hover:not(:disabled){background:#ffffff0d;color:var(--text)}.card--editing input{width:100%;background:var(--bg);color:var(--text);border:1px solid var(--card-border);padding:6px 8px;border-radius:var(--radius);margin-bottom:6px}.column-add{background:transparent;border:1px dashed var(--muted);color:var(--muted);padding:8px;border-radius:var(--radius);cursor:pointer}.column-add:hover{background:#ffffff0a;color:var(--text)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:10}.modal{background:var(--column-bg);padding:20px;border-radius:var(--radius);width:420px;max-width:90vw;display:flex;flex-direction:column;gap:12px}.modal h2{margin:0;font-size:18px}.modal label{display:flex;flex-direction:column;gap:4px}.modal input,.modal textarea{background:var(--bg);color:var(--text);padding:8px;border:1px solid var(--card-border);border-radius:var(--radius)}.modal-actions{display:flex;justify-content:flex-end;gap:8px}button{background:var(--accent);color:var(--bg);border:none;padding:8px 14px;font-weight:600;border-radius:var(--radius);cursor:pointer}button:disabled{opacity:.4;cursor:not-allowed}button.danger{background:var(--danger);color:#fff}.toast{position:fixed;bottom:24px;right:24px;padding:12px 16px;border-radius:var(--radius);display:flex;align-items:center;gap:12px}.toast--success{background:#68d39126;border:1px solid var(--success)}.toast--error{background:#fc818126;border:1px solid var(--danger)}.toast button{background:transparent;color:var(--text)}