:root{color-scheme:light;--bg: #f4f6f8;--surface: #ffffff;--border: #e2e8f0;--text: #1e293b;--text-muted: #64748b;--accent: #2563eb;--danger: #dc2626;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}button{cursor:pointer;font-family:inherit;background:var(--accent);color:#fff;border:none;border-radius:6px;padding:8px 14px;font-size:.9rem}button.secondary,button:disabled{background:var(--border);color:var(--text)}button:disabled{cursor:not-allowed;opacity:.7}select,input,textarea{font-family:inherit;font-size:.9rem;padding:6px 10px;border:1px solid var(--border);border-radius:6px;background:#fff;color:var(--text)}label{display:block;font-size:.8rem;font-weight:600;color:var(--text-muted);margin-bottom:4px}.signin-screen{height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;text-align:center;padding:24px}.app-shell{display:flex;flex-direction:column;height:100vh}header{display:flex;justify-content:space-between;align-items:center;padding:12px 24px;background:var(--surface);border-bottom:1px solid var(--border)}header h1{font-size:1.2rem;margin:0}.header-actions{display:flex;align-items:center;gap:12px}.role-badge{background:#dbeafe;color:#1d4ed8;padding:4px 10px;border-radius:999px;font-size:.75rem;font-weight:600}.filter-panel{display:flex;flex-wrap:wrap;gap:10px;align-items:end;padding:12px 24px;background:var(--surface);border-bottom:1px solid var(--border)}.filter-panel label{display:flex;flex-direction:column;gap:4px;font-size:.75rem}.timeline{flex:1;display:flex;gap:16px;padding:20px 24px;overflow-x:auto;align-items:flex-start}.timeline-column{min-width:260px;flex-shrink:0}.timeline-column h3{font-size:.85rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.03em;margin:0 0 10px;position:sticky;top:0}.timeline-card{display:flex;flex-direction:column;gap:6px;width:100%;text-align:left;background:var(--surface);border:1px solid var(--border);border-left:4px solid var(--text-muted);border-radius:8px;padding:12px;margin-bottom:10px;color:var(--text)}.timeline-card strong{font-size:.9rem;line-height:1.3}.badge{display:inline-block;font-size:.7rem;padding:2px 8px;border-radius:999px;background:#f1f5f9;color:var(--text-muted);width:fit-content}.badge-muted{background:#eef2ff;color:#4338ca}.assignee{font-size:.75rem;color:var(--text-muted)}.empty-state{color:var(--text-muted);padding:24px}.loading{padding:24px;color:var(--text-muted)}.error{color:var(--danger);font-size:.85rem}.drawer-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a66;z-index:10}.drawer{position:fixed;top:0;right:0;bottom:0;width:min(420px,100vw);background:var(--surface);box-shadow:-8px 0 24px #00000026;padding:24px;overflow-y:auto;z-index:11;display:flex;flex-direction:column;gap:16px}.drawer h2{margin:0;padding-right:24px}.drawer-close{position:absolute;top:16px;right:16px;background:none;color:var(--text-muted);font-size:1.4rem;line-height:1;padding:4px 8px}.drawer-description{color:var(--text-muted);font-size:.9rem;line-height:1.5}.tags{display:flex;flex-wrap:wrap;gap:6px}.tag{background:#f1f5f9;border-radius:999px;padding:2px 10px;font-size:.75rem;color:var(--text-muted)}.checkbox-label{display:flex;align-items:center;gap:8px;font-weight:400;color:var(--text)}.blueprint-period{margin-top:8px;width:100%}.user-picker{position:relative}.user-picker input{width:100%}.user-picker-results{list-style:none;margin:4px 0 0;padding:4px;position:absolute;z-index:20;width:100%;background:var(--surface);border:1px solid var(--border);border-radius:6px;max-height:220px;overflow-y:auto}.user-picker-results li{padding:6px 8px;border-radius:4px;font-size:.85rem;cursor:pointer}.user-picker-results li:hover{background:#f1f5f9}.user-picker-results small{display:block;color:var(--text-muted)}.comments-thread ul{list-style:none;margin:0;padding:0;max-height:220px;overflow-y:auto}.comments-thread li{padding:8px 0;border-bottom:1px solid var(--border)}.comment-meta{display:flex;justify-content:space-between;font-size:.75rem}.timestamp{color:var(--text-muted)}.comments-thread textarea{width:100%;margin-top:8px}.comments-thread button{margin-top:8px}textarea{width:100%;resize:vertical}input[type=date]{width:100%}