:root{--bg:#f5f7fb;--card:#fff;--ink:#172033;--muted:#64748b;--accent:#2563eb;--line:#dbe3ef;--danger:#b42318;--ok:#027a48}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.topbar{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);padding:14px 16px;display:flex;align-items:center;justify-content:space-between}.topbar span{display:block;font-size:13px;color:var(--muted);font-weight:400}.export-link,.secondary{border:1px solid var(--line);background:#fff;border-radius:12px;padding:11px 14px;color:var(--ink);text-decoration:none;font-weight:700}.app-shell{max-width:760px;margin:0 auto;padding:14px 14px 100px}.login-card{max-width:440px;margin:15vh auto;background:var(--card);border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:0 18px 45px rgba(15,23,42,.08)}.card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:18px;margin:0 0 14px;box-shadow:0 10px 28px rgba(15,23,42,.05)}h1,h2{margin:0 0 14px}h2{font-size:18px}label{display:block;font-size:14px;font-weight:750;margin:13px 0;color:#334155}input,textarea,select{width:100%;margin-top:7px;border:1px solid #cbd5e1;border-radius:14px;padding:14px 13px;font:inherit;background:#fff;color:var(--ink)}textarea{resize:vertical}.file-btn{border:1px dashed #b9c7d9;background:#f8fafc;border-radius:16px;padding:15px;margin:10px 0}.file-btn input{display:block;border:0;padding:8px 0 0}.file-btn.has-file{border-color:var(--accent);background:#eff6ff}.file-btn.has-file:after{content:attr(data-file-label);display:block;color:var(--accent);font-size:13px;margin-top:6px}.signature-head{display:flex;justify-content:space-between;align-items:center}.signature-wrap{border:1px solid #cbd5e1;border-radius:16px;background:#fff;overflow:hidden}#signaturePad{display:block;touch-action:none}.bottom-actions{position:fixed;left:0;right:0;bottom:0;background:rgba(255,255,255,.96);border-top:1px solid var(--line);padding:12px max(12px,env(safe-area-inset-left)) calc(12px + env(safe-area-inset-bottom));display:flex;gap:10px;justify-content:center}.primary{border:0;background:var(--accent);color:white;border-radius:14px;padding:14px 18px;font-weight:800;font-size:16px;min-width:170px}.primary:disabled{opacity:.65}.notice{border-radius:16px;padding:14px;margin:12px 0;border:1px solid}.success{background:#ecfdf3;border-color:#abefc6;color:var(--ok)}.error{background:#fef3f2;border-color:#fecdca;color:var(--danger)}.loading{padding:24px;color:var(--muted)}small{color:var(--muted);font-weight:500}@media (max-width:520px){.app-shell{padding:10px 10px 100px}.card{border-radius:18px;padding:15px}.topbar{padding:12px}.secondary,.primary{flex:1;text-align:center}}
.ocr-panel{border:1px solid var(--line);background:#f8fafc;border-radius:16px;padding:13px;margin:10px 0 2px}.ocr-status{font-size:13px;color:var(--muted);margin-bottom:10px}.ocr-suggestions{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}.ocr-chip{border:1px solid var(--accent);background:#eff6ff;color:var(--accent);border-radius:999px;padding:9px 12px;font-weight:800}

/* Asset register additions */
.topbar nav{display:flex;gap:8px;align-items:center}.link-button{border:0;background:transparent;color:#fff;font:inherit;padding:8px 6px;cursor:pointer}.asset-panel h1,.history-card h1{margin:0 0 4px;font-size:1.35rem}.asset-toolbar{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;margin-bottom:14px}.asset-toolbar p{margin:0;color:#667085}.asset-search{display:flex;gap:8px;margin-bottom:14px}.asset-search input{flex:1}.asset-list,.history-list{display:grid;gap:12px}.asset-card,.history-item{background:#fff;border:1px solid #e6e9ef;border-radius:18px;padding:14px;box-shadow:0 8px 24px rgba(16,24,40,.06)}.asset-card{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:start}.asset-main{display:grid;gap:3px}.asset-main strong{font-size:1.05rem}.asset-main span{color:#344054}.asset-main small,.asset-count,.history-item small{color:#667085}.asset-status{text-align:right;font-weight:700;padding:6px 9px;border-radius:12px;background:#f2f4f7}.asset-status small{font-weight:400;color:#667085}.asset-actions{grid-column:1/-1;display:flex;gap:8px}.asset-actions button{flex:1}.asset-count{grid-column:1/-1}.pill{display:inline-block;margin-left:8px;padding:3px 8px;border-radius:999px;font-size:.8rem;background:#f2f4f7}.result-pass{background:#ecfdf3;color:#027a48}.result-fail{background:#fef3f2;color:#b42318}.result-requires-action{background:#fffaeb;color:#b54708}.result-not-tested{background:#f2f4f7;color:#344054}.file-row{position:relative;display:block;border:1px dashed #cbd5e1;border-radius:14px;padding:12px;margin-bottom:10px;background:#f8fafc}.file-row input{margin-top:8px}.file-row.has-file::after{content:attr(data-file-label);display:block;margin-top:6px;color:#027a48;font-size:.85rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.notice.info{background:#eff8ff;border-color:#b2ddff;color:#175cd3}@media(max-width:640px){.asset-toolbar{display:block}.asset-toolbar .primary{width:100%;margin-top:10px}.topbar{align-items:flex-start}.topbar nav{flex-wrap:wrap;justify-content:flex-end}}

/* v4: file previews and audit-friendly history */
.file-preview{display:none;margin-top:10px;grid-template-columns:repeat(auto-fill,minmax(104px,1fr));gap:10px}.file-preview:not(:empty){display:grid}.preview-item{border:1px solid #e4e7ec;background:#fff;border-radius:12px;overflow:hidden;min-height:98px;display:flex;flex-direction:column}.preview-item img{width:100%;height:82px;object-fit:cover;background:#f2f4f7}.preview-item span{display:block;padding:7px 8px;font-size:.78rem;color:#475467;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.preview-file-icon{height:82px;display:flex;align-items:center;justify-content:center;background:#f2f4f7;color:#667085;font-weight:800;font-size:.75rem}.preview-more{border:1px dashed #cbd5e1;border-radius:12px;display:flex;align-items:center;justify-content:center;color:#667085;font-weight:800;min-height:98px}.history-item-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;margin-bottom:12px}.asset-summary{color:#667085}.detail-grid{display:grid;gap:0;border:1px solid #eaecf0;border-radius:14px;overflow:hidden;margin:12px 0}.detail-row{display:grid;grid-template-columns:minmax(145px,.38fr) 1fr;border-bottom:1px solid #eaecf0;background:#fff}.detail-row:last-child{border-bottom:0}.detail-row dt,.detail-row dd{margin:0;padding:10px 12px}.detail-row dt{background:#f9fafb;color:#475467;font-weight:800}.detail-row dd{color:#101828}.history-media-section{margin-top:14px}.history-media-section h3{font-size:1rem;margin:0 0 10px}.history-media-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px}.history-media-item{margin:0;border:1px solid #eaecf0;border-radius:14px;overflow:hidden;background:#fff}.history-media-item img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover;background:#f2f4f7}.history-media-item figcaption{padding:9px 10px;display:grid;gap:2px}.history-media-item figcaption strong{font-size:.82rem}.history-media-item figcaption span{font-size:.78rem;color:#667085;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-download-card{display:flex;align-items:center;justify-content:center;min-height:105px;background:#f2f4f7;color:#344054;text-decoration:none;font-weight:800}.signature-history-box{background:#fff;border:1px solid #eaecf0;border-radius:14px;padding:10px;max-width:360px}.signature-history-box img{display:block;max-width:100%;height:auto}@media(max-width:560px){.detail-row{grid-template-columns:1fr}.detail-row dt{padding-bottom:4px}.detail-row dd{padding-top:4px}.history-media-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.topbar .link-button{color:var(--accent);font-weight:800}

/* v5: due/overdue asset filters */
.filter-tabs{display:flex;gap:8px;overflow-x:auto;margin:0 0 14px;padding-bottom:3px}.filter-tab{border:1px solid var(--line);background:#fff;border-radius:999px;padding:10px 13px;font-weight:800;color:#344054;white-space:nowrap}.filter-tab.active{background:var(--accent);border-color:var(--accent);color:#fff}.due-line{grid-column:1/-1;border-top:1px solid #eaecf0;padding-top:10px;color:#344054}.due-badge{display:inline-block;margin-left:7px;border-radius:999px;padding:4px 8px;font-size:.78rem;font-weight:800}.due-ok{background:#ecfdf3;color:#027a48}.due-soon,.due-today{background:#fffaeb;color:#b54708}.due-overdue{background:#fef3f2;color:#b42318}.due-unknown{background:#f2f4f7;color:#667085}.asset-overdue{border-color:#fecdca;background:linear-gradient(0deg,#fff,#fff),#fef3f2}.asset-due-soon{border-color:#fedf89}@media(max-width:520px){.filter-tabs{margin-left:-2px;margin-right:-2px}.filter-tab{font-size:.88rem;padding:9px 11px}.due-badge{display:block;margin:7px 0 0;width:max-content}}