:root{--bg:#f7f8fa;--surface:#ffffff;--border:#e2e5ea;--text:#1a1d23;--text-muted:#6b7280;--primary:#2f5aff;--primary-contrast:#ffffff;--danger:#d92d20;--danger-bg:#fef3f2;--success:#12805c;--success-bg:#ecfdf5;--warning:#b54708;--warning-bg:#fffaeb;--radius:8px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:14px;line-height:1.5}a{color:inherit}.app-shell{display:flex;min-height:100vh}.sidebar{width:220px;flex-shrink:0;background:var(--surface);border-right:1px solid var(--border);padding:20px 12px;display:flex;flex-direction:column;gap:4px}.sidebar-brand{font-weight:700;font-size:16px;padding:0 8px 16px}.sidebar-merchant{padding:0 8px 16px;font-size:12px;color:var(--text-muted);border-bottom:1px solid var(--border);margin-bottom:8px}.nav-link{display:block;padding:8px 10px;border-radius:var(--radius);text-decoration:none;color:var(--text);font-weight:500}.nav-link:hover{background:var(--bg)}.main{flex:1 1;min-width:0;padding:24px 32px}.page-header{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:20px}.page-header h1{font-size:20px;margin:0}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius)}.list{display:flex;flex-direction:column}.list-row{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border);text-decoration:none;color:var(--text)}.list-row:last-child{border-bottom:none}.list-row:hover{background:var(--bg)}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:600;white-space:nowrap}.badge-neutral{background:var(--bg);color:var(--text-muted)}.badge-success{background:var(--success-bg);color:var(--success)}.badge-danger{background:var(--danger-bg);color:var(--danger)}.badge-warning{background:var(--warning-bg);color:var(--warning)}.empty-state,.muted{color:var(--text-muted)}.empty-state{padding:40px 16px;text-align:center}.btn{border:1px solid var(--border);background:var(--surface);border-radius:var(--radius);padding:8px 16px;font-size:14px;font-weight:600;cursor:pointer}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);border-color:var(--primary);color:var(--primary-contrast)}.btn-danger{background:var(--danger);border-color:var(--danger);color:#fff}.diff-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:16px;gap:16px}.diff-col h4{margin:0 0 8px;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted)}.diff-col dl{margin:0;display:grid;grid-template-columns:auto 1fr;grid-gap:4px 12px;gap:4px 12px}.diff-col dt{color:var(--text-muted)}.diff-col dd{margin:0}.diff-changed{background:var(--warning-bg);border-radius:4px;padding:2px 4px;margin:-2px -4px}.field-row{display:grid;grid-template-columns:140px 1fr;grid-gap:8px;gap:8px;padding:6px 0}.field-label{color:var(--text-muted)}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));grid-gap:16px;gap:16px;margin-bottom:24px}.stat-card{padding:16px}.stat-card .stat-value{font-size:28px;font-weight:700}.stat-card .stat-label{color:var(--text-muted);font-size:12px;text-transform:uppercase;letter-spacing:.04em}.timeline{display:flex;flex-direction:column;gap:0}.timeline-item{display:flex;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border)}.timeline-item:last-child{border-bottom:none}.timeline-icon{width:8px;height:8px;border-radius:50%;background:var(--primary);margin-top:6px;flex-shrink:0}.timeline-body time{display:block;font-size:12px;color:var(--text-muted)}.message{padding:12px 16px;border-bottom:1px solid var(--border)}.message-customer{background:var(--bg)}.message-meta{font-size:12px;color:var(--text-muted);margin-bottom:4px}form.inline{display:inline}.error-banner{background:var(--danger-bg);color:var(--danger);border:1px solid var(--danger);border-radius:var(--radius);padding:12px 16px;margin-bottom:16px}.section{margin-bottom:24px}.section h2{font-size:15px;margin:0 0 12px}.two-col{display:grid;grid-template-columns:340px 1fr;grid-gap:20px;gap:20px;align-items:start}