.po-layout{display:grid;grid-template-columns:minmax(350px,.72fr) minmax(0,1.28fr);gap:18px}.po-board,.po-detail-panel{padding:20px;min-height:540px}.po-filter{border:0;background:transparent;color:#6c7d94;padding:6px 9px;border-radius:8px;font-size:9px;font-weight:850;cursor:pointer}.po-filter.active{background:#fff;color:var(--blue);box-shadow:0 3px 10px rgba(11,31,68,.08)}.po-list{display:flex;flex-direction:column;gap:9px}.po-list-item{width:100%;padding:14px;border:1px solid var(--line);border-radius:13px;background:#fff;text-align:left;cursor:pointer}.po-list-item:hover,.po-list-item.selected{border-color:#88b1fb;background:#f8fbff}.po-list-item>div{display:flex;align-items:center;justify-content:space-between;gap:10px}.po-list-item strong{font-size:12px;color:var(--navy)}.po-list-item p{font-size:10px;color:var(--muted);margin:7px 0 0}.po-status{padding:5px 8px;border-radius:999px;font-size:8px;font-weight:900;text-transform:uppercase}.po-status.draft{background:#eaf2ff;color:var(--blue)}.po-status.pending_approval{background:#fff1dc;color:#9c5c00}.po-status.approved{background:#e5f7ec;color:var(--green)}.po-status.sent{background:#f0eaff;color:var(--purple)}.po-status.cancelled{background:#f0f2f5;color:#6c7888}.po-detail-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}.po-detail-heading h3{font-size:22px;color:var(--navy);margin:5px 0}.po-detail-heading p{font-size:10px;color:var(--muted);margin:0}.po-total{text-align:right}.po-total strong,.po-total small{display:block}.po-total strong{font-size:22px;color:var(--navy)}.po-total small{font-size:9px;color:var(--muted)}.po-lines{margin:18px 0}.quantity-control{display:flex;align-items:center;gap:5px}.quantity-control input{width:66px;padding:6px;border:1px solid var(--line);border-radius:8px;font-size:10px}.po-actions{display:flex;justify-content:flex-end;gap:8px;margin:15px 0;padding-top:15px;border-top:1px solid var(--line)}.audit-timeline{border-top:1px solid var(--line);padding-top:15px}.audit-timeline h4{font-size:11px;color:var(--navy)}.audit-event{display:grid;grid-template-columns:10px 1fr;gap:9px;margin:11px 0}.audit-event>span{width:8px;height:8px;border-radius:50%;background:var(--blue);margin-top:4px}.audit-event strong,.audit-event small{display:block}.audit-event strong{font-size:10px}.audit-event small{font-size:9px;color:var(--muted);margin-top:3px}.approval-note{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:10px;font-size:10px;margin-top:10px}@media(max-width:900px){.po-layout{grid-template-columns:1fr}}@media(max-width:600px){.po-detail-heading{flex-direction:column}.po-total{text-align:left}.po-actions{align-items:stretch;flex-direction:column}}