:root{--bg-primary: #0b1120;--bg-secondary: #111827;--bg-card: #1a2332;--text-primary: #ecf3ff;--text-secondary: #94a3b8;--border-color: #1e293b;--accent-blue: #3b82f6;--accent-green: #22c55e;--accent-orange: #f59e0b;--accent-purple: #8b5cf6}*{margin:0;padding:0;box-sizing:border-box}body{background-color:var(--bg-primary);color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app-layout{display:grid;grid-template-columns:260px 1fr 320px;gap:16px;max-width:1400px;margin:0 auto;padding:20px;min-height:100vh}.left-panel{position:sticky;top:20px;height:fit-content}.center-content{min-width:0}.right-panel{position:sticky;top:20px;height:fit-content}.project-card{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:12px;padding:20px;margin-bottom:16px;transition:border-color .2s ease,box-shadow .2s ease}.project-card:hover{border-color:var(--accent-blue);box-shadow:0 0 0 1px #3b82f61a}.project-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.project-card-name{font-size:16px;font-weight:600;color:var(--text-primary)}.project-card-stars{font-size:14px;color:var(--accent-orange);font-weight:500}.project-card-summary{font-size:14px;color:var(--text-secondary);margin-bottom:12px;line-height:1.5}.project-card-meta{display:flex;align-items:center;gap:12px;margin-bottom:12px;font-size:13px}.project-card-language{display:inline-flex;align-items:center;gap:4px;color:var(--accent-green)}.project-card-language:before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;background-color:var(--accent-green)}.project-card-reason{font-size:13px;color:var(--accent-purple);margin-bottom:12px;font-style:italic}.project-card-actions{display:flex;gap:8px}.project-card-btn{padding:6px 14px;border-radius:6px;font-size:13px;font-weight:500;cursor:pointer;border:1px solid var(--border-color);background-color:transparent;color:var(--text-secondary);transition:all .2s ease}.project-card-btn-primary{background-color:var(--accent-blue);color:#fff;border-color:var(--accent-blue)}.project-card-btn-primary:hover{background-color:#2563eb}.project-card-btn-dismiss{color:var(--text-secondary);border-color:transparent;opacity:.6}.project-card-btn-dismiss:hover{opacity:1;color:#ef4444;border-color:#ef4444}.project-card-btn:hover{border-color:var(--accent-blue);color:var(--text-primary)}.project-card-btn-compared{background-color:#3b82f626;border-color:var(--accent-blue);color:var(--accent-blue)}.app-refresh-btn{display:inline-flex;align-items:center;gap:4px;padding:9px 14px;border-radius:6px;font-size:13px;font-weight:500;cursor:pointer;border:1px solid var(--border-color);background-color:var(--accent-blue);color:#fff;transition:all .2s ease;white-space:nowrap;flex-shrink:0;line-height:1}.app-refresh-btn:hover{background-color:#2563eb}.app-refresh-btn:disabled{opacity:.6;cursor:not-allowed}.reason-toggle-btn{background:none;border:none;color:var(--accent-purple);font-size:13px;font-weight:500;cursor:pointer;padding:0;margin-bottom:8px;transition:color .2s ease}.reason-toggle-btn:hover{color:#a78bfa}.project-card-ai-summary{background-color:#8b5cf614;border:1px solid rgba(139,92,246,.2);border-radius:8px;padding:10px 14px;margin-bottom:12px}.ai-summary-label{font-size:12px;font-weight:600;color:var(--accent-purple);margin-bottom:6px}.project-card-ai-summary p{font-size:13px;color:var(--text-secondary);line-height:1.6;margin:0}.project-card-btn-ai{background-color:#8b5cf61a;border-color:#8b5cf64d;color:var(--accent-purple)}.project-card-btn-ai:hover{background-color:#8b5cf633;border-color:var(--accent-purple)}.project-card-btn-ai:disabled{opacity:.6;cursor:not-allowed}.filters-panel{background-color:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;padding:16px}.filters-title{font-size:14px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:12px}.filter-btn{display:block;width:100%;padding:10px 14px;margin-bottom:6px;border-radius:8px;font-size:14px;font-weight:500;text-align:left;cursor:pointer;border:1px solid transparent;background-color:transparent;color:var(--text-secondary);transition:all .2s ease}.filter-btn:hover{background-color:#3b82f614;color:var(--text-primary)}.filter-btn-active{background-color:#3b82f626;color:var(--accent-blue);border-color:#3b82f64d}.tabs-container{display:flex;gap:4px;background-color:var(--bg-secondary);border-radius:10px;padding:4px;border:1px solid var(--border-color)}.tab-btn{flex:1;padding:8px 12px;border-radius:8px;font-size:12px;font-weight:500;cursor:pointer;border:none;background-color:transparent;color:var(--text-secondary);transition:all .2s ease;white-space:nowrap}.tab-btn:hover{color:var(--text-primary)}.tab-btn-active{background-color:var(--accent-blue);color:#fff}.add-project-input{width:100%;padding:8px 10px;border-radius:6px;border:1px solid var(--border-color);background:var(--bg-secondary);color:var(--text-primary);font-size:13px;outline:none;box-sizing:border-box}.add-project-input:focus{border-color:var(--accent-blue)}.project-card-btn-fav{font-size:16px;line-height:1;padding:6px 10px}.project-card-btn-fav.favorited{color:#f59e0b;border-color:#f59e0b}.status-banner{padding:12px 16px;border-radius:8px;margin-bottom:16px;font-size:14px}.status-idle{background-color:#22c55e1a;border:1px solid rgba(34,197,94,.3);color:var(--accent-green)}.status-loading{background-color:#3b82f61a;border:1px solid rgba(59,130,246,.3);color:var(--accent-blue)}.status-error{background-color:#ef44441a;border:1px solid rgba(239,68,68,.3);color:#ef4444}.sidebar-placeholder{background-color:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;padding:16px;color:var(--text-secondary);font-size:14px;text-align:center}.research-sidebar{background-color:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;padding:16px}.research-sidebar-title{font-size:18px;font-weight:600;color:var(--text-primary);margin-bottom:12px}.research-sidebar-reason{font-size:13px;color:var(--accent-purple);margin-bottom:16px;font-style:italic}.research-sidebar-reason strong{display:block;font-style:normal;font-weight:600;color:var(--text-secondary);margin-bottom:4px}.research-sidebar-section{margin-bottom:16px}.research-sidebar-label{display:block;font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:8px}.research-sidebar-textarea{width:100%;padding:8px 10px;border-radius:8px;border:1px solid var(--border-color);background-color:var(--bg-primary);color:var(--text-primary);font-size:13px;font-family:inherit;resize:vertical;box-sizing:border-box;margin-bottom:8px}.research-sidebar-textarea:focus{outline:none;border-color:var(--accent-blue)}.research-sidebar-tags{display:flex;flex-wrap:wrap;gap:6px}.research-sidebar-tag{padding:4px 12px;border-radius:6px;font-size:12px;font-weight:500;cursor:pointer;border:1px solid var(--border-color);background-color:transparent;color:var(--text-secondary);transition:all .2s ease}.research-sidebar-tag:hover{border-color:var(--accent-blue);color:var(--text-primary)}.research-sidebar-tag-active{background-color:#3b82f633;border-color:var(--accent-blue);color:var(--accent-blue)}.compare-tray{background-color:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;padding:16px;margin-top:16px}.compare-tray-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.compare-tray-title{font-size:14px;font-weight:600;color:var(--text-primary)}.compare-tray-empty{font-size:13px;color:var(--text-secondary);text-align:center;padding:12px 0}.compare-tray-list{display:flex;flex-direction:column;gap:8px}.compare-tray-item{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;background-color:var(--bg-card);border-radius:8px;border:1px solid var(--border-color)}.compare-tray-item-name{font-size:13px;font-weight:500;color:var(--accent-blue);text-decoration:none}.compare-tray-item-name:hover{text-decoration:underline}.compare-tray-remove-btn{padding:2px 10px;border-radius:4px;font-size:12px;cursor:pointer;border:1px solid rgba(239,68,68,.3);background-color:transparent;color:#ef4444;transition:all .2s ease}.compare-tray-remove-btn:hover{background-color:#ef44441a}