:root{font-family:Inter,Segoe UI,system-ui,-apple-system,sans-serif;line-height:1.5;font-weight:400;color:#111827;background-color:#f3f4f6;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:#f3f4f6}button{border-radius:999px;border:1px solid rgba(255,255,255,.2);padding:.55em 1.2em;font-size:.9rem;font-weight:600;font-family:inherit;background-color:#4f46e5;color:#fff;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease}button:hover{transform:translateY(-1px);box-shadow:0 8px 18px #4f46e540}button:focus,button:focus-visible{outline:3px solid rgba(79,70,229,.4);outline-offset:2px}input,button,textarea,select{font:inherit}#root{margin:0 auto}.app{display:flex;flex-direction:column;gap:1rem;padding:1.5rem;min-height:100vh}.app-header{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1.5rem;background:#101828;color:#f9fafb;padding:2rem 2.5rem;border-radius:4px;box-shadow:0 20px 60px #0f172a2e}.app-header h1{margin:.4rem 0 0;font-size:2.5rem;line-height:1.1}.eyebrow{text-transform:uppercase;letter-spacing:.18em;font-size:.7rem;opacity:.7;margin:0}.subtle{margin:.4rem 0 0;color:#f9fafbb8;max-width:34rem}.header-actions{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center}.upload{position:relative;overflow:hidden;display:inline-flex;align-items:center;justify-content:center;background:#1f2937;color:#f9fafb;border-radius:4px;padding:.6rem 1.4rem;cursor:pointer;border:1px solid rgba(255,255,255,.15)}.upload input{position:absolute;inset:0;opacity:0;cursor:pointer}.upload span{font-weight:600}.error-banner{background:#fee2e2;color:#991b1b;border:1px solid #fecaca;padding:.9rem 1.2rem;border-radius:4px}.controls{display:grid;grid-template-columns:minmax(240px,1fr) minmax(280px,2fr) minmax(160px,.6fr);gap:1.5rem;align-items:start}.control-group{display:flex;flex-direction:column;gap:.6rem;background:#fff;border-radius:4px;padding:1.2rem;box-shadow:0 12px 32px #0f172a14}.control-group label{font-weight:600;color:#111827}.control-group input[type=search]{border-radius:4px;padding:.6rem .9rem;font-size:.95rem}.control-group.layers{gap:.8rem}.control-heading{display:flex;justify-content:space-between;align-items:baseline}.helper{font-size:.8rem;color:#6b7280}.layer-options{display:flex;flex-wrap:wrap;gap:.5rem}.layer-chip{display:inline-flex;align-items:center;gap:.4rem;padding:.35rem .6rem;background:#f3f4f6;border-radius:4px;font-size:.85rem;color:#111827}.layer-chip input{accent-color:#4f46e5}.placeholder{color:#9ca3af;margin:0}.control-group.metrics{flex-direction:row;justify-content:space-between;gap:1rem}.metric-label{display:block;font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:#6b7280}.metric-value{display:block;font-weight:700;font-size:1rem;color:#111827}.content{display:grid;grid-template-columns:minmax(220px,.65fr) minmax(560px,2.2fr);gap:1rem}.timeline-panel{background:#fff;border-radius:4px;padding:1.5rem;box-shadow:0 16px 40px #0f172a14;display:flex;flex-direction:column;gap:1rem}.section-header h2{margin:0;font-size:1.3rem;color:#111827}.section-header{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}.section-header .subtle{color:#6b7280}.packet-list,.packet-details{background:#fff;border-radius:4px;padding:1.5rem;box-shadow:0 16px 40px #0f172a14;display:flex;flex-direction:column;gap:1.2rem;max-height:2000px;overflow:auto}.view-toggle{display:inline-flex;border:1px solid #e5e7eb;border-radius:4px;overflow:hidden}.view-toggle button{border-radius:0;border:none;background:#f9fafb;color:#374151;padding:.35rem .75rem;font-size:.85rem;font-weight:600;cursor:pointer}.view-toggle button.active{background:#4338ca;color:#fff}.sequence-diagram{display:flex;flex-direction:column;gap:1rem}.sequence-header{display:grid;gap:.5rem;padding-bottom:.75rem;border-bottom:1px solid #e5e7eb}.sequence-participant{text-align:center;font-size:.8rem;font-weight:600;color:#111827;padding:.4rem;background:#f3f4f6;border-radius:4px;word-break:break-word}.sequence-body{display:flex;flex-direction:column;gap:.65rem;overflow:auto;padding-right:.5rem}.sequence-row{display:grid;grid-template-columns:120px minmax(0,1fr);gap:.75rem;align-items:center}.sequence-row-meta{display:flex;flex-direction:column;gap:.2rem;font-size:.75rem;color:#6b7280}.sequence-row-id{font-weight:700;color:#111827}.sequence-row-grid{position:relative;display:grid;gap:.5rem;min-height:28px}.sequence-row-details{grid-column:2 / 3;display:flex;flex-direction:column;gap:.6rem;margin-top:.25rem;background:#f9fafb;border:1px solid #e5e7eb;border-radius:4px;padding:.6rem .75rem;font-size:.75rem;color:#374151}.sequence-layer{display:flex;flex-direction:column;gap:.35rem}.sequence-layer-name{font-weight:700;color:#111827}.sequence-layer-fields{display:grid;gap:.2rem}.sequence-field-key{display:inline-block;min-width:180px;font-weight:600;color:#374151;margin-right:.4rem;word-break:break-all}.sequence-field-value{color:#4b5563;word-break:break-word}.sequence-cell{position:relative;height:28px}.sequence-cell:after{content:"";position:absolute;left:50%;top:0;bottom:0;width:1px;background:#e5e7eb}.sequence-arrow{position:absolute;inset:0;width:100%;height:100%}.sequence-arrow line{stroke:#4338ca;stroke-width:1.6}.sequence-arrow polygon{fill:#4338ca}.timeline{background:#f8fafc;border:1px solid #e2e8f0;border-radius:4px;padding:1rem 1rem 2rem}.timeline-empty{color:#9ca3af;font-size:.9rem}.timeline-track{position:relative;height:40px;background:linear-gradient(90deg,#6366f126,#94a3b833)}.timeline-beam{position:absolute;top:8px;width:1px;height:24px;border-radius:1px;background:#94a3b8;border:none;transform:translate(-50%) scaleX(.1);cursor:pointer}.timeline-beam:hover,.timeline-beam.active{background:#4338ca;transform:translate(-50%) scaleX(.1)}.timeline-labels{position:absolute;left:0;right:0;bottom:-22px;display:flex;justify-content:space-between;font-size:.72rem;color:#64748b}.list{display:flex;flex-direction:column;gap:.75rem;overflow:auto;padding-right:.4rem}.packet-row{border:1px solid #e5e7eb;background:#f9fafb;border-radius:4px;padding:1rem;display:flex;flex-direction:column;gap:.65rem;text-align:left;transition:all .2s ease;color:#111827;box-shadow:none;transform:none}.packet-row:hover{border-color:#c7d2fe;background:#eef2ff;box-shadow:none;transform:none}.packet-row.active{border-color:#4338ca;box-shadow:0 12px 25px #4338ca1f;background:#eef2ff}.packet-meta{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center;color:#6b7280;font-size:.85rem}.packet-id{font-weight:700;color:#111827}.packet-stream{background:#dbeafe;color:#1d4ed8;padding:.15rem .5rem;border-radius:4px;font-weight:600}.packet-time{color:#6b7280}.packet-flow{display:flex;align-items:center;gap:.6rem;font-weight:600;color:#111827}.packet-flow .arrow{color:#4f46e5;font-weight:700}.packet-protocols{display:flex;flex-wrap:wrap;gap:.4rem}.chip{background:#e5e7eb;color:#374151;padding:.2rem .5rem;border-radius:4px;font-size:.75rem}.detail-body{display:flex;flex-direction:column;gap:1rem}.detail-summary{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:1rem;background:#f8fafc;padding:1rem 1.2rem;border-radius:4px;border:1px solid #e2e8f0}.layers-grid{display:grid;gap:1rem}.layer-card{border:1px solid #e5e7eb;border-radius:4px;padding:1rem 1.2rem;background:#fff;display:flex;flex-direction:column;gap:.8rem}.layer-card header{display:flex;justify-content:space-between;align-items:center}.layer-card h3{margin:0;font-size:1.05rem;color:#111827}.layer-count{font-size:.8rem;color:#6b7280}.layer-table{display:flex;flex-direction:column;gap:.65rem}.layer-row{display:grid;grid-template-columns:minmax(180px,1fr) minmax(0,2fr);gap:1rem;align-items:start}.layer-key{font-weight:600;color:#111827;font-size:.85rem;word-break:break-all}.layer-value{color:#374151;font-size:.85rem;word-break:break-word}.layer-json{margin:0;background:#f3f4f6;border-radius:4px;padding:.7rem;font-size:.8rem;overflow-x:auto;color:#111827}.empty{padding:2rem;text-align:center;color:#9ca3af;border:1px dashed #e5e7eb;border-radius:4px}@media(max-width:1100px){.controls,.content{grid-template-columns:1fr}}@media(max-width:720px){.app,.app-header{padding:1.5rem}}