:root{--bg:#f7f8fa;--surface:#ffffff;--border:#ecedf1;--text:#14161a;--muted:#8a8f98;--accent:#5b57eb;--accent-soft:#eeedfe;--green:#12855a;--green-soft:#e4f6ee;--blue:#1256c4;--blue-soft:#e7f0ff;--red:#c0392b;--red-soft:#fdecea;--amber:#9a6b00;--amber-soft:#fbf1da;--shadow:0 1px 2px rgba(20,22,26,0.04),0 4px 16px rgba(20,22,26,0.04)}*{box-sizing:border-box}body,html{margin:0;padding:0}body{font-family:Inter,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}.shell{display:grid;grid-template-columns:232px 1fr;min-height:100vh}.sidebar{background:var(--surface);border-right:1px solid var(--border);padding:22px 16px;display:flex;flex-direction:column;gap:4px;position:-webkit-sticky;position:sticky;top:0;height:100vh}.logo{display:flex;align-items:center;gap:10px;padding:0 8px 20px;font-weight:700;font-size:15px;letter-spacing:-.01em}.logo .dot{width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--accent),#8b7bff);display:grid;place-items:center;color:#fff;font-size:13px}.campaign-switch{display:flex;gap:4px;padding:4px;margin:0 0 16px;background:#f4f4f7;border-radius:10px}.campaign-tab{flex:1 1;border:0;background:transparent;color:var(--muted);font:inherit;font-size:12px;font-weight:600;line-height:1.25;padding:7px 6px;border-radius:7px;cursor:pointer;transition:background .12s,color .12s}.campaign-tab:hover:not(.active):not(:disabled){color:var(--text)}.campaign-tab.active{background:var(--surface);color:var(--accent);box-shadow:0 1px 2px rgba(20,20,40,.08)}.campaign-tab:disabled{cursor:default;opacity:.7}.nav-link{display:flex;align-items:center;gap:11px;padding:9px 11px;border-radius:9px;color:var(--muted);font-size:14px;font-weight:500;transition:background .12s,color 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var(--border);border-radius:8px;background:#fff;color:inherit}.filter-select{cursor:pointer}.filter-input:focus,.filter-select:focus{outline:none;border-color:var(--accent,#4f46e5)}table{width:100%;border-collapse:collapse}td,th{text-align:left;padding:13px 20px;font-size:14px;border-bottom:1px solid var(--border)}th{color:var(--muted);font-weight:500;font-size:12px;text-transform:uppercase;letter-spacing:.04em;background:#fbfbfc}tbody tr:last-child td{border-bottom:none}tbody tr{transition:background .1s}tbody tr:hover{background:#fafafc}td .name{font-weight:600}td .sub{color:var(--muted);font-size:12px}.msg{color:#4a4d54}.expand-btn{font-size:12px;font-weight:600;padding:5px 12px;border-radius:7px;border:1px solid var(--border);background:#fff;color:var(--muted);cursor:pointer;transition:background .1s,color .1s,border-color .1s}.expand-btn:hover{background:#f5f6f8;color:#2a2d34;border-color:#d3d6dc}.reply-detail-row:hover{background:transparent}.reply-detail-row>td{padding:0 20px 16px}.reply-detail{background:#fbfbfc;border:1px solid var(--border);border-radius:10px;padding:14px 16px}.reply-meta{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:12px;color:var(--muted);margin-bottom:10px}.reply-meta strong{color:#2a2d34;font-weight:600}.reply-body{font-size:14px;line-height:1.6;color:#2a2d34;white-space:pre-wrap;word-break:break-word}.badge{font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px;background:#f0f1f4;color:var(--muted);text-transform:capitalize}.badge.replied{background:var(--green-soft);color:var(--green)}.badge.opened{background:var(--blue-soft);color:var(--blue)}.badge.bounced{background:var(--red-soft);color:var(--red)}.badge.sent{background:var(--accent-soft);color:var(--accent)}.step{font-size:12px;font-weight:600;color:var(--muted);font-feature-settings:"smcp";font-variant:small-caps;letter-spacing:.03em}.dropzone{background:var(--surface);border:2px dashed #d6d8de;border-radius:16px;padding:56px 24px;text-align:center;box-shadow:var(--shadow);transition:border-color .15s,background .15s}.dropzone:hover{border-color:var(--accent);background:#fcfcff}.dropzone .up-icon{width:46px;height:46px;border-radius:12px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;margin:0 auto 16px}.dropzone .up-icon svg{width:22px;height:22px}.dropzone .big{font-size:16px;font-weight:600}.dropzone .small{color:var(--muted);font-size:13px;margin-top:4px}.btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff;padding:10px 18px;border-radius:10px;font-size:14px;font-weight:600;border:none;cursor:pointer;margin-top:20px;transition:opacity .12s,transform 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var(--border)}.btn.ghost:hover{background:#f4f4f7;color:var(--text);opacity:1}.insta-row{cursor:pointer}.insta-row:hover{background:#f8f8fb}.caret{display:inline-block;color:var(--muted);font-size:18px;line-height:1;transition:transform .15s ease}.caret.open{transform:rotate(90deg)}.insta-detail-row>td{background:#f8f8fb;padding:0}.insta-detail{padding:16px 20px 18px;border-top:1px solid var(--border)}.insta-detail-subject{font-weight:600;font-size:14px;margin-bottom:10px}.insta-detail-body{white-space:pre-wrap;word-break:break-word;font-size:14px;line-height:1.55;color:var(--text);max-width:720px}.insta-detail-actions{margin-top:16px}.thread-msg{padding:12px 0 14px;border-bottom:1px solid 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