        :root{
            --bg:#121418;--surface:#1a1d23;--surface2:#22262e;--surface3:#2a2f38;
            --border:#2e333d;--border-hover:#3d4351;
            --text:#e8eaed;--text-dim:#8b8f98;--text-faint:#5f636d;
            --accent:#E6332A;--accent-hover:#ff3f35;--accent-glow:rgba(230,51,42,.15);
            --accent-soft:rgba(230,51,42,.08);
            --green:#34d399;--red:#f87171;--amber:#fbbf24;--purple:#a78bfa;
            --radius:8px
        }
        /* Light theme — przełączany przez data-theme na <html> (toggle w sidebarze).
           Moduły jadą na tych samych tokenach, więc flip wystarcza dla ~80% UI. */
        [data-theme="light"]{
            --bg:#F6F6F7;--surface:#FFFFFF;--surface2:#F2F2F3;--surface3:#E8E8EA;
            --border:#E2E2E5;--border-hover:#C9C9CE;
            --text:#141414;--text-dim:#6E7178;--text-faint:#9A9DA3;
            --accent:#E6332A;--accent-hover:#C9241C;--accent-glow:rgba(230,51,42,.12);
            --accent-soft:rgba(230,51,42,.07);
            --green:#1A6B3C;--red:#DC2626;--amber:#B45309;--purple:#7C3AED
        }
        *{margin:0;padding:0;box-sizing:border-box}
        body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;-webkit-font-smoothing:antialiased;transition:background-color .15s ease,color .15s ease}

        /* Nav: zastąpiony sidebarem (static/css/sidebar.css) — stare .nav/.tabs usunięte */
        .container{max-width:1040px;margin:0 auto;padding:28px 20px}

        /* Login */
        .login-wrap{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:70vh;text-align:center}
        .login-wrap img{height:48px;margin-bottom:24px}
        .login-wrap h1{font-size:26px;font-weight:700;letter-spacing:-.5px;margin-bottom:6px}
        .login-wrap p{color:var(--text-dim);margin-bottom:32px;font-size:14px}
        .btn-google{display:inline-flex;align-items:center;gap:10px;background:#fff;color:#1a1a1a;border:none;padding:11px 26px;border-radius:8px;font-size:14px;font-weight:600;font-family:inherit;cursor:pointer;transition:transform .12s,box-shadow .2s;text-decoration:none}
        .btn-google:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(0,0,0,.4)}
        .btn-google svg{width:18px;height:18px}
        .error-badge{background:rgba(248,113,113,.08);border:1px solid rgba(248,113,113,.2);color:var(--red);padding:10px 18px;border-radius:8px;font-size:13px;margin-bottom:20px}

        /* Client selector */
        .client-bar{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 20px;margin-bottom:18px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
        .client-bar label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.8px;color:var(--text-dim)}
        .client-bar select{background:var(--surface2);border:1px solid var(--border);color:var(--text);padding:7px 12px;border-radius:6px;font-family:inherit;font-size:13px;outline:none;min-width:280px;cursor:pointer;transition:border-color .15s}
        .client-bar select:focus{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-glow)}

        /* Tabs (przyciski w sidebarze — tu tylko content switching) */
        .tab-content{display:none}
        .tab-content.active{display:block}

        /* Forms */
        .form-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:18px}
        .form-group label{display:block;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.6px;color:var(--text-dim);margin-bottom:6px}
        .form-group textarea{width:100%;background:var(--surface2);border:1px solid var(--border);color:var(--text);padding:10px 12px;border-radius:6px;font-family:'JetBrains Mono',monospace;font-size:12px;outline:none;transition:border-color .15s;resize:vertical;min-height:72px}
        .form-group textarea:focus{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-glow)}
        .hint{font-size:11px;color:var(--text-faint);margin-top:5px;line-height:1.5}
        .tag{display:inline-block;background:var(--surface3);color:var(--text-dim);padding:1px 6px;border-radius:3px;font-size:10px;font-weight:600}

        /* File upload */
        .file-drop{border:2px dashed var(--border);border-radius:6px;padding:14px;text-align:center;cursor:pointer;transition:all .15s;margin-bottom:6px;font-size:12px;color:var(--text-dim)}
        .file-drop:hover,.file-drop.dragover{border-color:var(--accent);color:var(--accent)}
        .file-drop input{display:none}

        /* Buttons — action (red) */
        .btn{display:inline-flex;align-items:center;gap:7px;background:var(--accent);color:#fff;border:none;padding:9px 20px;border-radius:6px;font-size:13px;font-weight:600;font-family:inherit;cursor:pointer;transition:all .15s}
        .btn:hover{background:var(--accent-hover);transform:translateY(-1px)}
        .btn:disabled{opacity:.4;cursor:wait;transform:none}

        /* Buttons — export (outline, distinct from action) */
        .btn-export{display:inline-flex;align-items:center;gap:5px;background:transparent;border:1px solid var(--border);color:var(--text-dim);padding:6px 14px;border-radius:6px;font-size:11px;font-weight:500;font-family:inherit;cursor:pointer;transition:all .15s}
        .btn-export:hover{border-color:var(--green);color:var(--green)}
        .btn-export::before{content:'↓';font-size:13px;font-weight:700}

        .btn .spinner{width:13px;height:13px;border:2px solid rgba(255,255,255,.25);border-top-color:#fff;border-radius:50%;animation:spin .5s linear infinite;display:none}
        .btn.loading .spinner{display:block}
        .btn.loading .btn-text{display:none}
        @keyframes spin{to{transform:rotate(360deg)}}

        /* Results header */
        .results-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;flex-wrap:wrap;gap:8px}
        .results-header h2{font-size:14px;font-weight:600}
        .badge{font-size:11px;color:var(--accent);background:var(--accent-soft);padding:3px 10px;border-radius:12px;font-weight:600}

        /* Cards */
        .result-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 18px;margin-bottom:6px;transition:border-color .15s}
        .result-card:hover{border-color:var(--border-hover)}
        .result-offer-name{font-weight:600;font-size:13px;margin-bottom:2px}
        .result-offer-id{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--text-dim);margin-bottom:6px}
        .result-path{display:flex;flex-wrap:wrap;align-items:center;gap:3px;font-size:11px}
        .crumb{background:var(--surface2);padding:2px 7px;border-radius:4px;white-space:nowrap}
        .crumb:last-child{background:var(--accent-soft);color:var(--accent);font-weight:600}
        .sep{color:var(--text-faint);font-size:9px}

        .not-found-list{background:rgba(248,113,113,.04);border:1px solid rgba(248,113,113,.12);border-radius:var(--radius);padding:12px 16px;margin-top:8px}
        .not-found-list h3{font-size:11px;color:var(--red);margin-bottom:4px}
        .not-found-list code{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--text-dim)}

        /* Metrics */
        .metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px;margin-bottom:18px}
        .metric-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px}
        .metric-label{font-size:10px;color:var(--text-dim);text-transform:uppercase;letter-spacing:.5px;margin-bottom:3px}
        .metric-value{font-size:22px;font-weight:700}
        .metric-sub{font-size:11px;color:var(--text-dim);margin-top:1px}

        /* Table */
        .data-table{width:100%;border-collapse:collapse;font-size:12px}
        .data-table th{text-align:left;padding:8px 10px;font-size:10px;text-transform:uppercase;letter-spacing:.5px;color:var(--text-dim);border-bottom:1px solid var(--border);white-space:nowrap}
        .data-table td{padding:8px 10px;border-bottom:1px solid var(--border);vertical-align:top}
        .data-table tr:hover td{background:var(--surface2)}
        .data-table .num{text-align:right;font-family:'JetBrains Mono',monospace;font-size:11px}
        .offer-link{color:var(--accent);text-decoration:none}
        .offer-link:hover{text-decoration:underline}

        /* Bar */
        .bar-bg{width:72px;height:5px;background:var(--surface3);border-radius:3px;display:inline-block;vertical-align:middle}
        .bar-fill{height:100%;background:var(--accent);border-radius:3px}

        /* Expandable */
        .expandable-header{cursor:pointer;display:flex;align-items:center;gap:8px}
        .expandable-header .arrow{transition:transform .15s;font-size:9px;color:var(--text-faint)}
        .expandable-header.open .arrow{transform:rotate(90deg)}
        .expandable-body{display:none;padding:6px 0 6px 18px}
        .expandable-body.open{display:block}

        /* Warning */
        .warning-box{background:rgba(251,191,36,.06);border:1px solid rgba(251,191,36,.15);border-radius:var(--radius);padding:10px 14px;font-size:12px;color:var(--amber);margin-bottom:14px}

        /* Seasonality calendar */
        .season-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:3px;margin:8px 0}
        .season-week-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:3px;margin:6px 0}
        .season-cell{text-align:center;padding:6px 2px;border-radius:4px;font-size:10px;font-weight:600;line-height:1.2}
        .season-cell .sc-label{font-size:9px;color:var(--text-dim);margin-bottom:2px}
        .season-cell .sc-index{font-size:13px;font-family:'JetBrains Mono',monospace}
        .season-cell.level-wysoki{background:rgba(52,211,153,.12);color:var(--green)}
        .season-cell.level-sredni{background:var(--surface3);color:var(--text-dim)}
        .season-cell.level-niski{background:rgba(248,113,113,.08);color:var(--red)}
        .season-cell.current{outline:2px solid var(--accent);outline-offset:-1px}
        .season-event{display:inline-flex;align-items:center;gap:4px;background:var(--surface3);padding:3px 8px;border-radius:4px;font-size:11px;margin:2px}
        .season-event.impact-wysoki{background:rgba(52,211,153,.1);color:var(--green)}
        .season-event.impact-sredni{background:rgba(251,191,36,.08);color:var(--amber)}
        .season-summary{font-size:12px;color:var(--text-dim);margin-top:6px;line-height:1.5}
        .season-unmatched{background:var(--surface2);border:1px dashed var(--border);border-radius:var(--radius);padding:10px 14px;font-size:12px;color:var(--text-faint);margin-bottom:4px}
        .season-meta{display:flex;flex-wrap:wrap;gap:8px;font-size:11px;color:var(--text-faint);margin-top:4px}
        .season-meta span{background:var(--surface2);padding:2px 6px;border-radius:3px}
        .analysis-row{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px;font-size:11px}
        .analysis-pill{display:inline-flex;align-items:center;gap:4px;padding:3px 8px;border-radius:4px;font-weight:500}
        .pill-momentum-up{background:rgba(52,211,153,.1);color:var(--green)}
        .pill-momentum-strong-up{background:rgba(52,211,153,.18);color:var(--green);font-weight:700}
        .pill-momentum-down{background:rgba(248,113,113,.1);color:var(--red)}
        .pill-momentum-strong-down{background:rgba(248,113,113,.18);color:var(--red);font-weight:700}
        .pill-momentum-stable{background:var(--surface3);color:var(--text-faint)}
        .pill-shift{background:rgba(139,92,246,.1);color:var(--purple)}
        .pill-corr-pos{background:rgba(52,211,153,.08);color:var(--green)}
        .pill-corr-neg{background:rgba(248,113,113,.08);color:var(--red)}
        .pill-corr-none{background:var(--surface3);color:var(--text-faint)}
        .pill-priceseason{background:rgba(216,162,58,.12);color:var(--amber)}
        .pill-tier-prem{background:rgba(216,162,58,.12);color:var(--amber)}
        .pill-tier-bud{background:var(--surface3);color:var(--text-faint)}
        /* Okienko sezonowości cen (osobny mini-wykres, oba moduły) */
        .ps-panel{border:1px solid var(--border);border-radius:10px;background:var(--surface2);padding:12px 14px 10px}
        .seas-pilot .ps-panel{margin:8px 22px 4px}
        #tab-sbrowser .ps-panel{margin:0 0 22px}
        .ps-phead{display:flex;align-items:center;flex-wrap:wrap;gap:4px 8px;font-size:11.5px;font-weight:700;color:var(--text);letter-spacing:.02em;margin-bottom:10px}
        .ps-psub{margin-left:auto;font-weight:500;font-size:10.5px;color:var(--text-faint)}
        .ps-chart{display:flex;align-items:stretch;gap:5px;height:62px}
        .ps-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:5px;min-width:0}
        .ps-bw{position:relative;width:100%;height:46px}
        .ps-base{position:absolute;top:50%;left:0;right:0;height:1px;background:var(--border)}
        .ps-bar{position:absolute;left:20%;right:20%;border-radius:2px;min-height:2px}
        .ps-bar.up{bottom:50%;background:var(--amber)}
        .ps-bar.down{top:50%;background:var(--text-faint)}
        .ps-col.now .ps-bar{box-shadow:0 0 0 1.5px var(--accent)}
        .ps-ml{font-size:9.5px;color:var(--text-faint);text-transform:uppercase;letter-spacing:.02em;line-height:1}
        .ps-col.now .ps-ml{color:var(--text);font-weight:700}
        .stree-branch{border-left:2px solid var(--border);margin-left:12px;padding-left:0}
        .stree-node{margin-bottom:2px}
        .stree-header{display:flex;align-items:center;gap:8px;padding:6px 10px;border-radius:6px;cursor:pointer;transition:background .15s;font-size:13px}
        .stree-header:hover{background:var(--surface2)}
        .stree-arrow{width:16px;flex-shrink:0;font-size:10px;color:var(--text-faint);transition:transform .15s;text-align:center}
        .stree-arrow.open{transform:rotate(90deg)}
        .stree-name{font-weight:600;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
        .stree-badge{font-size:10px;padding:2px 6px;border-radius:3px;background:var(--surface3);color:var(--text-faint);white-space:nowrap}
        .stree-index-badge{font-size:11px;padding:2px 8px;border-radius:4px;font-weight:600;white-space:nowrap}
        .stree-children{overflow:hidden;transition:max-height .2s ease}
        .stree-children.collapsed{max-height:0 !important;overflow:hidden}
        .stree-leaf{display:flex;align-items:center;gap:8px;padding:5px 10px 5px 28px;border-radius:6px;font-size:12px;cursor:pointer;transition:background .15s}
        .stree-leaf:hover{background:var(--surface2)}
        .stree-leaf-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
        .stree-leaf-pills{display:flex;gap:4px;flex-shrink:0;flex-wrap:wrap}
        .stree-mom{font-size:10px;padding:1px 5px;border-radius:3px}
        .stree-detail{margin:4px 0 8px 28px;padding:10px 14px;background:var(--surface);border:1px solid var(--border);border-radius:8px;font-size:12px}
        .status-aktywna{color:var(--green)}
        .status-niestabilna{color:var(--amber)}
        .status-wygasla{color:var(--red);opacity:.6}
        .card-wygasla{opacity:.5;border-style:dashed}
        .card-niestabilna{border-color:rgba(251,191,36,.25)}
        .insight{padding:6px 10px;border-radius:6px;font-size:12px;line-height:1.5;margin-bottom:4px;display:flex;gap:8px;align-items:flex-start}
        .insight .i-icon{flex-shrink:0;font-size:14px}
        .insight-positive{background:rgba(52,211,153,.06);color:var(--green)}
        .insight-negative{background:rgba(248,113,113,.06);color:var(--red)}
        .insight-warning{background:rgba(251,191,36,.06);color:var(--amber)}
        .insight-neutral{background:var(--surface2);color:var(--text-dim)}
        .insight-danger{background:rgba(248,113,113,.1);color:var(--red)}
        .section-label{font-size:10px;color:var(--text-faint);margin-bottom:2px;display:flex;align-items:center;gap:4px}
        .section-label .help{display:inline-flex;align-items:center;justify-content:center;width:14px;height:14px;border-radius:50%;background:var(--surface3);color:var(--text-faint);font-size:9px;cursor:pointer;flex-shrink:0;transition:background .15s}
        .section-label .help:hover{background:var(--accent);color:#fff}
        #tipBox{display:none;position:fixed;z-index:999;background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:14px 16px;max-width:420px;max-height:70vh;overflow-y:auto;font-size:12px;line-height:1.7;color:var(--text);box-shadow:0 8px 32px rgba(0,0,0,.5);white-space:pre-wrap;word-wrap:break-word}
        #tipBox .tip-title{font-weight:700;font-size:13px;color:var(--accent);margin-bottom:6px}
        #tipBox .tip-close{position:absolute;top:8px;right:10px;cursor:pointer;color:var(--text-dim);font-size:16px;line-height:1}
        #tipBox .tip-close:hover{color:var(--text)}
        .cell-tip{display:none;position:fixed;z-index:998;background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:10px 12px;max-width:320px;font-size:11px;line-height:1.6;color:var(--text);box-shadow:0 4px 16px rgba(0,0,0,.4);white-space:pre-wrap}
        .insights-box{margin-top:10px;border-top:1px solid var(--border);padding-top:8px}
        .insights-box .insight{font-size:12px;line-height:1.6;padding:4px 0;color:var(--text-dim)}
        .insights-box .insight-positive{color:var(--green)}
        .insights-box .insight-negative{color:var(--red)}
        .insights-box .insight-warning{color:var(--amber)}
        .insights-box .insight-neutral{color:var(--text-dim)}

        /* Category tree */
        .view-toggle{display:inline-flex;border:1px solid var(--border);border-radius:6px;overflow:hidden;margin-left:8px}
        .view-toggle button{background:none;border:none;color:var(--text-dim);font-size:12px;padding:4px 12px;cursor:pointer;font-family:inherit;transition:all .15s}
        .view-toggle button.active{background:var(--accent);color:#fff}
        .tree-node{border-left:2px solid var(--border);margin-left:12px;padding-left:12px}
        .tree-node.depth-0{border-left:none;margin-left:0;padding-left:0}
        .tree-row{display:flex;align-items:center;gap:8px;padding:6px 8px;border-radius:6px;cursor:pointer;transition:background .1s;font-size:13px}
        .tree-row:hover{background:var(--surface2)}
        .tree-toggle{width:16px;text-align:center;font-size:10px;color:var(--text-faint);flex-shrink:0}
        .tree-name{flex:1;font-weight:500}
        .tree-count{font-family:'JetBrains Mono',monospace;font-size:12px;padding:2px 8px;border-radius:4px;min-width:28px;text-align:center}
        .tree-count.cnt-low{background:var(--surface3);color:var(--text-faint)}
        .tree-count.cnt-ok{background:rgba(52,211,153,.12);color:var(--green)}
        .tree-count.cnt-high{background:rgba(251,191,36,.1);color:var(--amber)}
        .tree-value{font-size:11px;color:var(--text-faint);min-width:70px;text-align:right}
        .tree-children{overflow:hidden}
        .tree-offers{margin-left:28px;margin-top:2px}
        .tree-offer{font-size:11px;color:var(--text-dim);padding:2px 0;display:flex;gap:8px}
        .tree-offer .to-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
        .tree-offer .to-price{color:var(--text-faint);flex-shrink:0}

        /* Loading */
        .loading-info{text-align:center;padding:36px;color:var(--text-dim);font-size:13px}
        .loading-bar{width:180px;height:2px;background:var(--surface3);border-radius:2px;margin:14px auto 0;overflow:hidden}
        .loading-bar::after{content:'';display:block;width:35%;height:100%;background:var(--accent);border-radius:2px;animation:loading-slide 1s ease-in-out infinite}
        @keyframes loading-slide{0%{transform:translateX(-100%)}100%{transform:translateX(380%)}}

        /* Feedback modal */
        .fb-overlay{position:fixed;inset:0;z-index:1000;display:none;align-items:center;justify-content:center;background:rgba(0,0,0,.62);padding:20px}
        .fb-overlay.open{display:flex}
        .fb-modal{background:var(--surface);border:1px solid var(--border-hover);border-radius:var(--radius);padding:22px;width:100%;max-width:460px;box-shadow:0 20px 60px rgba(0,0,0,.55),0 0 0 1px rgba(255,255,255,.05)}
        .fb-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:4px}
        .fb-head h2{font-size:16px;font-weight:700;color:var(--text);margin:0}
        .fb-x{background:none;border:none;color:var(--text-dim);font-size:24px;line-height:1;cursor:pointer;padding:0 4px}
        .fb-x:hover{color:var(--text)}
        .fb-sub{font-size:12.5px;color:var(--text-dim);line-height:1.5;margin:0 0 16px}
        .fb-cats{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:14px}
        .fb-cats label{display:inline-flex;align-items:center;gap:5px;font-size:13px;color:var(--text);cursor:pointer}
        .fb-cats input{accent-color:var(--accent);cursor:pointer}
        .fb-text{width:100%;background:var(--surface2);border:1px solid var(--border);color:var(--text);padding:10px 12px;border-radius:6px;font-family:inherit;font-size:13px;outline:none;resize:vertical;min-height:120px;transition:border-color .15s}
        .fb-text:focus{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-glow)}
        .fb-status{font-size:12.5px;min-height:18px;margin:8px 0 0}
        .fb-status.ok{color:var(--green)}
        .fb-status.err{color:var(--red)}
        .fb-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:14px}
        .fb-actions button{padding:8px 16px;border-radius:6px;font-family:inherit;font-size:13px;font-weight:600;cursor:pointer;border:1px solid var(--border);transition:all .15s}
        .fb-cancel{background:var(--surface2);color:var(--text-dim)}
        .fb-cancel:hover{color:var(--text);border-color:var(--border-hover)}
        .fb-send{background:var(--accent);color:#fff;border-color:var(--accent)}
        .fb-send:hover{background:var(--accent-hover)}
        .fb-send:disabled{opacity:.6;cursor:default}
        /* Patch-notes popup (reuse .fb-overlay/.fb-modal/.fb-head/.fb-actions/.fb-send) */
        .pn-modal{max-width:480px}
        .pn-list{margin:8px 0 2px;max-height:56vh;overflow-y:auto}
        .pn-item{padding:11px 0;border-top:1px solid var(--border)}
        .pn-item:first-child{border-top:none;padding-top:4px}
        .pn-item .pn-t{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:6px}
        .pn-item h3{font-size:13.5px;font-weight:700;color:var(--text);margin:0}
        .pn-item .pn-date{font-size:11px;color:var(--text-faint);white-space:nowrap}
        .pn-item ul{margin:0;padding-left:18px}
        .pn-item li{font-size:12.5px;color:var(--text-dim);line-height:1.6;margin:3px 0}
