:root{
  --navy:#1E4399; --navy2:#3A4E86; --muted:#6B7590; --line:#D5DBE8; --bg:#F4F6FB; --card:#fff;
  --red:#D41A22; --yellow:#F8EF21; --green:#84C555; --soft:#E8EDF7; --ok:#2F7D32; --warn:#B3141B;
  --font:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0}
body{font-family:var(--font);background:var(--bg);color:#1c2333;font-size:15px;line-height:1.5}
button,input,select,textarea{font:inherit;color:inherit}
[hidden]{display:none!important}
.print-only{display:none}

/* ---------- top bar ---------- */
.topbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:16px;padding:10px 20px;background:#fff;border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--navy);white-space:nowrap}
.brand img{height:34px}
.tabs{display:flex;gap:4px;flex:1}
.tab{white-space:nowrap;border:0;background:none;padding:8px 14px;border-radius:8px;cursor:pointer;color:var(--navy2);font-weight:600}
.tab.active{background:var(--soft);color:var(--navy)}
.who{font-size:13px;color:var(--muted);text-align:right}
.banner{background:#FFF8B8;color:#5a4a00;padding:8px 20px;font-size:14px}

main{max-width:1080px;margin:0 auto;padding:20px 16px 60px}
.panel{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px}
h2{margin:0 0 14px;font-size:20px;color:var(--navy)}
h3{margin:22px 0 10px;font-size:16px;color:var(--navy)}
.hint{color:var(--muted);font-size:13.5px;margin:6px 0}

/* ---------- steps ---------- */
.steps{display:flex;gap:6px;list-style:none;padding:0;margin:0 0 22px;flex-wrap:wrap}
.steps li{flex:1;min-width:120px;display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:10px;background:var(--bg);color:var(--muted);font-weight:600;font-size:14px;cursor:pointer}
.steps li span{width:24px;height:24px;border-radius:50%;display:grid;place-items:center;background:#fff;border:1px solid var(--line);font-size:13px}
.steps li.active{background:var(--navy);color:#fff}
.steps li.active span{background:var(--yellow);color:var(--navy);border-color:var(--yellow)}
.steps li.done span{background:var(--green);color:#fff;border-color:var(--green)}

/* ---------- forms ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px 16px}
.grid .full{grid-column:1/-1}
label{display:flex;flex-direction:column;gap:5px;font-size:13.5px;font-weight:600;color:var(--navy2)}
input,select,textarea{border:1px solid var(--line);border-radius:9px;padding:9px 11px;background:#fff;font-weight:400;font-size:15px;min-width:0}
input:focus,select:focus,textarea:focus{outline:2px solid #9DB2E6;border-color:var(--navy)}
label.chk{flex-direction:row;align-items:center;gap:8px;font-weight:500}
label.chk input{width:18px;height:18px}
.req{color:var(--red)}
.row{display:flex;gap:8px;align-items:center}
.row>input{flex:1}
.row.between{justify-content:space-between;flex-wrap:wrap;gap:10px}

.prods{display:grid;gap:10px}
.prod{border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.prod.on{border-color:var(--navy);background:#FAFBFF}
.prod .ph{flex-direction:row;align-items:center;gap:10px;font-size:15px;color:#1c2333;font-weight:400;cursor:pointer}
.prod .ph input{width:20px;height:20px}
.prod .pb{margin-top:12px;padding-left:30px}
.prod:not(.on) .pb{display:none}

.errors{margin-top:14px}
.errors div{background:#FCE1E2;color:var(--warn);padding:8px 12px;border-radius:8px;margin-bottom:6px;font-size:14px}
.nav-btns{display:flex;justify-content:space-between;margin-top:20px}
.btn{border:1px solid var(--line);background:#fff;padding:10px 18px;border-radius:10px;font-weight:700;cursor:pointer}
.btn.primary{background:var(--navy);border-color:var(--navy);color:#fff}
.btn.ghost{color:var(--navy)}
.btn.sm{padding:5px 10px;font-size:13px;border-radius:8px}
.btn:disabled{opacity:.5;cursor:default}
.btns{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.preview-bar{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.paper-wrap{overflow:auto;background:#E3E7F0;border-radius:12px;padding:12px;margin-top:10px}
.paper{background:#fff;width:210mm;min-height:297mm;margin:0 auto;padding:14mm 14mm 16mm;box-shadow:0 4px 18px rgba(30,67,153,.15)}

.table-wrap{overflow:auto}
table.list{width:100%;border-collapse:collapse;font-size:14px}
table.list th{text-align:left;font-size:12.5px;color:var(--muted);font-weight:600;border-bottom:1px solid var(--line);padding:8px}
table.list td{border-bottom:1px solid #EDF0F6;padding:8px;vertical-align:top}
table.list .r{text-align:right}
table.cat input{width:120px;text-align:right;padding:6px 8px}
table.cat input.gb{width:64px}
table.cat .sub{color:var(--muted);font-size:12.5px}
.search{min-width:260px}
.ok{color:var(--ok)}

/* ---------- document (preview + print) ---------- */
.doc{font-family:var(--font);color:#141b2d;font-size:10pt;line-height:1.42}
.doc .hd{display:flex;gap:14px;align-items:center}
.doc .hd img{height:20mm}
.doc .co{flex:1}
.doc .co .n{font-weight:800;color:var(--navy);font-size:13pt;letter-spacing:.01em}
.doc .co>div{font-size:9.5pt;color:#333c52}
.doc .ci{display:inline-flex;align-items:center;gap:5px}
.doc .ci svg{color:var(--navy);flex:none}
.doc .cr{display:flex;flex-wrap:wrap;gap:4px 16px;margin-top:1px}
.doc .bar{display:flex;height:3px;margin:6px 0 8px}
.doc .bar i{flex:1}
.doc h1{text-align:center;color:var(--navy);font-size:19pt;margin:6px 0 0;letter-spacing:.06em}
.doc .meta{text-align:center;font-size:10pt;color:#333c52;margin-bottom:8px}
.doc .to{display:grid;grid-template-columns:max-content 1fr;gap:3px 12px;background:#F5F7FC;border-left:4px solid var(--navy);border-radius:0 8px 8px 0;padding:7px 14px;margin:2px 0 10px}
.doc .to .k{color:var(--navy2);font-weight:600}
.doc .intro{margin-bottom:2px}
.doc .pg{font-weight:700;color:var(--navy2);margin:6px 0 2px}
.doc .pg2{font-weight:700;margin:4px 0 2px}
.doc .note{margin:3px 0;font-size:10pt}
.doc table.items{width:100%;border-collapse:collapse;margin:8px 0}
.doc table.items th{background:var(--navy);color:#fff;font-weight:600;font-size:9.5pt;padding:6px;border:1px solid var(--navy)}
.doc table.items td{border:1px solid #C9D1E3;padding:5px 6px;vertical-align:top}
.doc table.items td.c{text-align:center}
.doc table.items td.r{text-align:right;white-space:nowrap}
.doc .it-name{font-weight:700}
.doc .it-ver{color:var(--navy2);font-weight:600}
.doc .it-d{font-size:8.5pt;color:#3c465e;margin-top:2px}
.doc .it-d div::before{content:"– "}
.doc table.items tr{page-break-inside:avoid;break-inside:avoid}
.doc .tot td{font-weight:600}
.doc .tot.grand td{background:var(--soft);color:var(--navy);font-weight:800;font-size:11pt}
.doc .words{margin:4px 0 10px;font-style:italic}
.doc h4{color:var(--navy);font-size:11pt;margin:10px 0 4px;break-after:avoid}
.doc ul{margin:2px 0;padding-left:18px}
.doc li{margin:2px 0}
.doc .sign{display:flex;justify-content:flex-end;margin-top:6px;break-inside:avoid}
.doc .sign>div{text-align:center;min-width:70mm}
.doc .sign .t{font-weight:700;margin-top:2px}
.doc .sign .sp{height:15mm}
.doc .small{font-size:9pt;color:#4a536a}

@page{size:A4;margin:12mm 12mm 14mm;
  @bottom-right{content:"Trang " counter(page) "/" counter(pages);font-family:Arial,sans-serif;font-size:8pt;color:#8B95AB}}
@media print{
  body{background:#fff}
  .no-print{display:none!important}
  .print-only{display:block!important}
  .doc{font-size:10pt}
  .doc table.items th{-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .doc *{-webkit-print-color-adjust:exact;print-color-adjust:exact}
}
@media (max-width:700px){
  .topbar{flex-wrap:wrap;padding:8px 12px;gap:6px}
  .tabs{order:3;flex:0 0 100%;overflow-x:auto}
  .who{flex:1}
  main{padding:12px 10px 40px}
  .panel{padding:16px}
  .steps li{min-width:0;font-size:0;flex:0 0 auto}
  .steps li span{font-size:13px}
  .steps li.active{font-size:13px}
  .prod .pb{padding-left:0}
  .paper{transform-origin:top left}
}

.doc .pol{margin:4px 0 6px;font-size:9.5pt}
.doc .pol-g{border:1px solid #DCE2EF;border-radius:6px;margin-bottom:6px;break-inside:avoid;overflow:hidden}
.doc .pol-h{background:#F5F7FC;color:var(--navy);font-weight:700;padding:4px 10px;border-bottom:1px solid #DCE2EF}
.doc .pol-g ul{margin:4px 0;padding:0 10px 0 26px}
.doc .endblk{break-inside:avoid}

.lbl{display:block;font-size:13.5px;font-weight:600;color:var(--navy2);margin-bottom:6px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{flex-direction:row;align-items:center;gap:0;font-weight:500;cursor:pointer}
.chip input{position:absolute;opacity:0;pointer-events:none}
.chip span{padding:7px 14px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--navy2);font-size:14px}
.chip input:checked+span{background:var(--navy);border-color:var(--navy);color:#fff}
.chip input:focus-visible+span{outline:2px solid #9DB2E6}
.warn{color:var(--warn);font-weight:500}
input:disabled{background:#F1F3F8;color:var(--muted)}

/* ô chọn có tìm kiếm */
select.combo-src{display:none}
.combo{position:relative;min-width:0;flex:1}
.combo-in{width:100%;padding-right:30px;cursor:pointer;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%233A4E86' stroke-width='2.5'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 11px center}
.combo-in:focus{cursor:text}
.combo-in::placeholder{color:#8B95AB}
.combo-list{position:absolute;z-index:20;left:0;right:0;top:calc(100% + 4px);max-height:280px;overflow:auto;margin:0;padding:4px;list-style:none;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 10px 28px rgba(30,67,153,.16);min-width:180px}
.combo-list li{padding:8px 10px;border-radius:7px;cursor:pointer;font-size:14.5px;font-weight:400;color:#1c2333}
.combo-list li.hi{background:var(--soft)}
.combo-list li.sel{color:var(--navy);font-weight:700}
.combo-list li.empty{color:var(--muted);cursor:default}
.row .combo{flex:0 0 96px}

/* ===== v6: tạm tính, thanh dưới cố định, xem toàn màn hình, lịch sử, bảng giá ===== */
.s2{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:18px;align-items:start}
.summary{position:sticky;top:76px;border:1px solid var(--line);border-radius:12px;padding:14px 16px;background:#FAFBFF}
.summary h3{margin:0 0 8px;font-size:15px}
.sum{list-style:none;margin:0;padding:0}
.sum li{display:flex;justify-content:space-between;gap:10px;padding:7px 0;border-bottom:1px dashed #DCE2EF;font-size:14px}
.sum li div{min-width:0}
.sum li small{display:block;color:var(--muted);font-size:12.5px}
.sum li span{white-space:nowrap;font-variant-numeric:tabular-nums}
.sum li.t{color:var(--navy2)}
.sum-total{display:flex;justify-content:space-between;align-items:baseline;margin-top:10px;color:var(--navy)}
.sum-total b{font-size:18px}
.summary .y2{margin:6px 0 0;font-size:13px;color:var(--muted)}
.sum-warn{margin-top:10px;font-size:13px;color:var(--warn)}
.sum-warn div{margin-top:4px}
.foot{position:sticky;bottom:0;z-index:4;background:linear-gradient(to top,#fff 82%,rgba(255,255,255,0));margin:16px -22px -22px;padding:10px 22px 16px;border-radius:0 0 14px 14px}
.foot .nav-btns{margin-top:0;align-items:center;gap:12px}
.foot .errors{margin:0 0 8px}
.nav-total{border:0;background:none;display:flex;flex-direction:column;align-items:center;line-height:1.25;color:var(--navy);cursor:pointer;padding:0}
.nav-total small{color:var(--muted);font-size:12px}
.nav-total b{font-size:16px}
.flash{animation:flash 1.2s ease}
@keyframes flash{0%,40%{box-shadow:0 0 0 3px #F6A3A7;border-color:var(--red)}100%{box-shadow:none}}
input.invalid{border-color:var(--red);outline-color:#F6A3A7}
.seg{display:flex;flex-wrap:wrap;gap:8px}
.seg .chip small{font-weight:400;opacity:.8}
.date{position:relative;display:flex}
.date #date-txt{flex:1;padding-right:40px}
.date-btn{position:absolute;right:4px;top:50%;transform:translateY(-50%);border:0;background:none;color:var(--navy2);padding:6px;cursor:pointer;border-radius:6px}
.date-btn:hover{background:var(--soft)}
#date-native{position:absolute;right:0;bottom:0;width:1px;height:1px;opacity:0;border:0;padding:0;pointer-events:none}
.viewer{position:fixed;inset:0;z-index:50;background:#E3E7F0;display:flex;flex-direction:column}
.viewer-bar{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 16px;background:#fff;border-bottom:1px solid var(--line);color:var(--navy)}
.viewer-body{flex:1;overflow:auto;padding:12px}
.viewer .paper{margin:0 auto}
body.noscroll{overflow:hidden}
.filters{display:grid;grid-template-columns:minmax(220px,2fr) repeat(3,minmax(160px,1fr));gap:10px;margin-bottom:8px}
.filters .search{min-width:0}
.hist-sum{margin:4px 0 10px}
.st-cell{min-width:150px}
.st-cell[data-st="Đã chốt"] .combo-in{background-color:#E2F2D6;border-color:#B5DC97;color:#2F6B1A;font-weight:600}
.st-cell[data-st="Không thành"] .combo-in{background-color:#FCE1E2;border-color:#F3B6B9;color:var(--warn)}
.st-cell[data-st="Đã gửi"] .combo-in{background-color:var(--soft);border-color:#C3CFEA;color:var(--navy)}
.st-cell .combo-in{padding:6px 28px 6px 10px;font-size:13.5px}
table.cat tr.grp td{background:var(--soft);color:var(--navy);font-weight:700;padding:6px 8px}
table.cat td.na{color:#B7BECE}
table.cat input.money{width:128px;text-align:right;padding:6px 8px;font-variant-numeric:tabular-nums}
@media (max-width:900px){
  .s2{grid-template-columns:1fr}
  .summary{position:static}
  .filters{grid-template-columns:1fr 1fr}
  .filters .search{grid-column:1/-1}
}
@media (max-width:700px){
  .foot{margin:12px -16px -16px;padding:10px 16px 14px}
  .foot .btn{padding:10px 14px}
}
.foot .btn,.nav-total b{white-space:nowrap}
@media (max-width:700px){
  .foot .btn{padding:10px 12px;font-size:14px}
  .nav-total b{font-size:15px}
  .viewer-bar{padding:8px 10px}
  .viewer-bar>b{display:none}
  .viewer-bar .btns{width:100%;flex-wrap:nowrap;justify-content:space-between}
  .viewer-bar .btn{flex:1}
}