:root{
  --ink:#1c2119; --ink-2:#4a5347; --line:#e2e4dd; --bg:#f6f7f3; --card:#fff;
  --green:#2f5d3a; --green-2:#3d7a4b; --gold:#b8862b; --red:#b03a2e; --amber:#8a6100;
  --amber-bg:#fdf4e0; --ok-bg:#e9f3ea; --err-bg:#fbeceb; --info-bg:#eef2f7;
  --radius:10px; --shadow:0 1px 2px rgba(20,30,20,.06), 0 6px 18px rgba(20,30,20,.05);
}
*{box-sizing:border-box}
[hidden]{display:none !important}
html,body{margin:0;padding:0}
body{
  font:15px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink); background:var(--bg); -webkit-font-smoothing:antialiased;
}
a{color:var(--green-2)}
h1{font-size:1.5rem;margin:0}
h2{font-size:1.05rem;margin:0 0 12px;letter-spacing:.01em}
h3{font-size:.92rem;margin:14px 0 6px;color:var(--ink-2)}
.muted{color:var(--ink-2)}
.small{font-size:.85em}
.strong{font-weight:650}
.r{text-align:right}
.nowrap{white-space:nowrap}
.prewrap{white-space:pre-wrap}
.neg{color:var(--red)}

/* ---------------- topbar ---------------- */
.topbar{
  display:flex;align-items:center;gap:22px;flex-wrap:wrap;
  padding:10px 20px;background:var(--card);border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:20;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-size:1.02rem}
.brand img{border-radius:6px;object-fit:cover}
.brand b{color:var(--green)}
.topbar nav{display:flex;gap:6px;flex:1}
.topbar nav a{
  padding:6px 12px;border-radius:8px;text-decoration:none;color:var(--ink-2);font-weight:550;font-size:.92rem;
}
.topbar nav a:hover{background:var(--bg)}
.topbar nav a.on{background:var(--green);color:#fff}
.who{display:flex;align-items:center;gap:12px;font-size:.86rem;color:var(--ink-2)}
.who form{margin:0}
.linkish{background:none;border:0;color:var(--ink-2);cursor:pointer;font:inherit;text-decoration:underline;padding:0}
.muted-link{color:var(--ink-2);font-size:.86rem}

main{max-width:1080px;margin:0 auto;padding:24px 20px 60px}
main.wide{max-width:1400px}
.sitefoot{text-align:center;color:#9aa397;font-size:.8rem;padding:0 20px 30px}

/* điện thoại: thanh trên gọn lại, không xuống dòng lộn xộn */
@media(max-width:820px){
  .topbar{gap:10px;padding:8px 14px}
  .topbar nav{order:3;flex-basis:100%;overflow-x:auto}
  .topbar nav a{white-space:nowrap}
  .who{margin-left:auto;font-size:.8rem;gap:8px}
  main{padding:16px 14px 50px}
}

/* ---------------- blocks ---------------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:18px;box-shadow:var(--shadow)}
.card.narrow{max-width:560px;margin-inline:auto}
.card.empty{text-align:center;padding:40px}
.card.internal{background:#fbfaf6;border-style:dashed}
.pagehead{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:18px}
.pagehead .actions{display:flex;gap:8px;flex-wrap:wrap}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
@media(max-width:900px){.two-col{grid-template-columns:1fr}}
.code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:650;color:var(--green)}

/* ---------------- forms ---------------- */
label{display:block;font-size:.82rem;color:var(--ink-2);font-weight:600;margin-bottom:10px}
input,select,textarea{
  display:block;width:100%;margin-top:4px;padding:8px 10px;font:inherit;color:var(--ink);
  background:#fff;border:1px solid #cfd4c9;border-radius:8px;
}
textarea{resize:vertical}
input:focus,select:focus,textarea:focus{outline:2px solid var(--green-2);outline-offset:-1px;border-color:var(--green-2)}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:0 14px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:0 14px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:0 14px;align-items:end}
.grid5{display:grid;grid-template-columns:repeat(5,1fr);gap:0 14px;align-items:end}
@media(max-width:720px){.grid2,.grid3,.grid4,.grid5{grid-template-columns:1fr}}
.stack label{margin-bottom:14px}
.inline{display:inline-flex;align-items:center;gap:8px;margin:0}
.inline.gap label,.inline.gap input,.inline.gap select{margin:0}
.inline input,.inline select{width:auto;min-width:120px}
.chk{display:flex;align-items:center;gap:8px;font-weight:500}
.chk input{width:auto;margin:0}
.hint{font-size:.8rem;color:var(--ink-2);margin:6px 0 0}
.hint.warn{color:var(--amber);font-weight:600}

button,.btn{
  display:inline-block;padding:8px 14px;font:inherit;font-weight:600;font-size:.9rem;
  border:1px solid #cfd4c9;border-radius:8px;background:#fff;color:var(--ink);cursor:pointer;text-decoration:none;
}
button:hover,.btn:hover{background:#f2f4ee}
.primary,button.primary{background:var(--green);border-color:var(--green);color:#fff}
.primary:hover,button.primary:hover{background:var(--green-2)}
.ghost{background:transparent;border-color:transparent;color:var(--ink-2)}
.big{padding:11px 20px;font-size:1rem;width:100%}
.small{padding:5px 10px;font-size:.83rem}
.tiny{padding:3px 8px;font-size:.78rem}

.authbox{max-width:380px;margin:8vh auto;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:30px;box-shadow:var(--shadow);text-align:center}
.authbox h1{font-size:1.25rem;margin:12px 0 2px}
.authbox .sub{color:var(--ink-2);margin:0 0 20px;font-size:.9rem}
.authbox form{text-align:left}
.authlogo{width:56px;height:56px;border-radius:12px;object-fit:cover}

/* ---------------- alerts / pills ---------------- */
.alert{padding:11px 14px;border-radius:9px;margin-bottom:14px;font-size:.9rem;border:1px solid transparent}
.alert ul{margin:6px 0 0;padding-left:20px}
.alert.ok{background:var(--ok-bg);border-color:#c6dfc9;color:#1f4a29}
.alert.err{background:var(--err-bg);border-color:#eec4bf;color:#8a2b21}
.alert.warn{background:var(--amber-bg);border-color:#e8d49b;color:var(--amber)}
.alert.info{background:var(--info-bg);border-color:#d3dce6;color:#3b4a5a}
.pill{display:inline-block;padding:1px 8px;border-radius:999px;font-size:.74rem;font-weight:650;background:#eceee7;color:var(--ink-2);vertical-align:middle}
.pill.lodging{background:#e8f0f5;color:#2c5468}
.pill.v{background:#e6ecf5;color:#3b5170}
.pill.agent{background:#efe6f5;color:#5a3b70}
.pill.retail{background:#e9f3ea;color:#2f5d3a}
.pill.warn{background:var(--amber-bg);color:var(--amber)}
.pill.s-draft{background:#eceee7}
.pill.s-sent{background:#e6ecf5;color:#3b5170}
.pill.s-won{background:#e9f3ea;color:#1f4a29}
.pill.s-lost{background:#f3e9e8;color:#8a2b21}
.pill.tiny{font-size:.68rem;padding:0 6px}

/* ---------------- lists / tables ---------------- */
.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.tablewrap table.list{min-width:820px}  /* màn hình hẹp thì cuộn ngang, không bóp chữ */
table.list{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
table.list th,table.list td{padding:9px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
table.list thead th{background:#f0f2eb;font-size:.78rem;text-transform:uppercase;letter-spacing:.04em;color:var(--ink-2)}
table.list tbody tr:hover{background:#fafbf7}
table.list td form{margin:0}

table.lines{width:100%;border-collapse:collapse;font-size:.9rem}
table.lines td,table.lines th{padding:7px 0;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
table.lines td.r,table.lines th.r{white-space:nowrap;padding-left:10px}
table.lines tfoot th{padding-top:10px;font-size:1rem;border-bottom:0}
table.lines tr.hl td{font-weight:650}
table.lines tr.k-discount td{color:var(--red)}
table.lines tr.k-tour td{font-weight:600}

dl.kv{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;margin:0;font-size:.92rem}
dl.kv dt{color:var(--ink-2);font-size:.85rem}
dl.kv dd{margin:0}
ul.versions{list-style:none;padding:0;margin:0;font-size:.9rem}
ul.versions li{padding:6px 0;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:10px}

.statrow{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:16px}
@media(max-width:720px){.statrow{grid-template-columns:repeat(2,1fr)}}
.stat{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;text-decoration:none;color:inherit}
.stat.on{border-color:var(--green);box-shadow:inset 0 0 0 1px var(--green)}
.stat .n{display:block;font-size:1.45rem;font-weight:700;line-height:1.1}
.stat .l{display:block;font-size:.8rem;color:var(--ink-2)}
.stat .v{display:block;font-size:.8rem;color:var(--green);font-weight:600;margin-top:2px}
.filters{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:16px}
.filters input,.filters select{width:auto;margin:0}
.filters input[name=q]{min-width:240px;flex:1}
.statusform{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.radiopill{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border:1px solid #cfd4c9;border-radius:999px;margin:0;font-weight:600;cursor:pointer}
.radiopill.on{background:var(--green);border-color:var(--green);color:#fff}
.radiopill input{width:auto;margin:0}

/* ---------------- builder ---------------- */
.builder{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:18px;align-items:start}
@media(max-width:1080px){.builder{grid-template-columns:1fr}}
.col-side{position:sticky;top:76px}
@media(max-width:1080px){.col-side{position:static}}

.prodgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
@media(max-width:720px){.prodgrid{grid-template-columns:1fr}}
.prodcard{
  display:block;margin:0;padding:12px 14px;border:1px solid #cfd4c9;border-radius:10px;cursor:pointer;
  background:#fff;font-weight:400;color:var(--ink);
}
.prodcard.on{border-color:var(--green);box-shadow:inset 0 0 0 1px var(--green);background:#f7fbf7}
/* Ẩn nút radio nhưng vẫn để bàn phím và trình đọc màn hình dùng được. */
.prodcard input,.segmented input{position:absolute;width:1px;height:1px;opacity:0;margin:0;pointer-events:none}
.prodcard:has(input:focus-visible),.segmented input:focus-visible + span{outline:2px solid var(--green-2);outline-offset:2px}
.prodcard b{display:block;font-size:.95rem;margin-bottom:3px}
.prodcard span{display:block;font-size:.83rem;color:var(--ink-2)}
.prodcard em{display:block;font-size:.76rem;color:#8b957f;font-style:normal;margin-top:5px}

.segmented{display:flex;gap:8px;flex-wrap:wrap}
.segmented label{margin:0;flex:1;min-width:200px}
.segmented span{
  display:block;padding:10px 14px;border:1px solid #cfd4c9;border-radius:9px;text-align:center;
  font-weight:600;font-size:.9rem;color:var(--ink-2);cursor:pointer;background:#fff;
}
.segmented input:checked + span{background:var(--green);border-color:var(--green);color:#fff}
.inline-sel{margin-top:14px}

.addon{padding:14px 0;border-top:1px dashed var(--line)}
.addon:first-child{border-top:0;padding-top:0}
.addon h3{margin:0 0 8px;font-size:.9rem;color:var(--ink);font-weight:650}
.lodgerow{padding:10px 12px;margin-bottom:10px;border:1px solid var(--line);border-radius:9px;background:#fbfcf9}
.lodgerow .hint{display:flex;justify-content:space-between;align-items:center;gap:12px}
.qgroup{margin:12px 0 2px;font-size:.82rem;font-weight:700;color:var(--green);letter-spacing:.02em}
.addon .qgroup:first-child{margin-top:4px}
.qtyrow{display:flex;align-items:flex-end;gap:12px;padding:7px 0;flex-wrap:wrap}
.qtyrow .qn{flex:1;min-width:220px;font-size:.88rem}
.qtyrow .qn em{display:block;font-style:normal;font-size:.78rem;color:var(--ink-2)}
.qtyrow .mini{margin:0;width:110px}
.qtyrow.custom input{width:auto;flex:1;min-width:120px}

.pricepanel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);margin-bottom:12px}
.pricepanel .loading{color:var(--ink-2);text-align:center;padding:30px 0}
.pricepanel .total{text-align:center;padding:6px 0 14px;border-bottom:1px solid var(--line);margin-bottom:12px}
.pricepanel .total .lbl{display:block;font-size:.78rem;color:var(--ink-2);text-transform:uppercase;letter-spacing:.05em}
.pricepanel .total .big{display:block;font-size:1.85rem;font-weight:700;color:var(--green);line-height:1.2}
.pricepanel .total .sub{display:block;font-size:.85rem;color:var(--ink-2)}
.pricepanel details.internal{margin-top:12px;border-top:1px dashed var(--line);padding-top:10px}
.pricepanel details.internal summary{cursor:pointer;font-size:.82rem;color:var(--ink-2);font-weight:600}
.thumbs{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.thumbs img{height:52px;width:auto;max-width:96px;object-fit:contain;border-radius:5px;border:1px solid var(--line);background:#f1f3ee}

.saverow{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.saverow button{flex:1}