:root{
  --navy:#17293F; --deep:#0E1A2A; --steel:#3D5A7A; --blue:#2F6FA8; --slate:#6B7888; --concrete:#E4E8EC;
  --bg:#F3F5F8; --surface:#FFFFFF; --ink:#17293F; --muted:#5B6A7C; --line:#D3DAE2; --line-strong:#AEB9C6;
  --accent:#2F6FA8; --good:#2E7D5B; --good-bg:#E6F2EC; --bad:#B4412F; --bad-bg:#F8E9E6; --warn:#9A6A12; --warn-bg:#FBF1DC;
  --info-bg:#E8F0F8; --r:6px;
  --f-display:"Montserrat","IBM Plex Sans Thai",system-ui,sans-serif;
  --f-body:"IBM Plex Sans Thai","Montserrat",system-ui,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0B1521; --surface:#12213A; --ink:#E6ECF3; --muted:#9AAABD; --line:#243750; --line-strong:#3A5070; --accent:#78AAD9;
  --good:#5FB891; --good-bg:#14322A; --bad:#E0806F; --bad-bg:#3A1F1C; --warn:#E3B55B; --warn-bg:#3A2E14; --info-bg:#16304D; color-scheme:dark}}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none} a:hover{text-decoration:underline}
h1,h2,h3{font-family:var(--f-display);margin:0;line-height:1.3;font-weight:600}
h1{font-size:24px} h2{font-size:17px} h3{font-size:15px}
.num,td.num,th.num{font-variant-numeric:tabular-nums;text-align:right;white-space:nowrap}
.mono{font-family:var(--f-mono);font-size:13px}
.muted{color:var(--muted)} .small{font-size:13px}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* shell */
.shell{display:grid;grid-template-columns:232px 1fr;min-height:100vh}
.side{background:var(--navy);color:#C9D5E3;padding:18px 12px;position:sticky;top:0;height:100vh;overflow-y:auto;display:flex;flex-direction:column;gap:2px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;padding:4px 8px 18px}
.brand svg{width:30px;flex:none}
.brand b{font:600 14px/1.2 var(--f-display);letter-spacing:.14em}
.brand small{display:block;font:500 10px/1.2 var(--f-mono);letter-spacing:.14em;color:#8EA3BC}
.side .grp{font:500 10px/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:#8EA3BC;padding:16px 10px 6px}
.side a{color:#C9D5E3;display:flex;align-items:center;justify-content:space-between;gap:8px;padding:7px 10px;border-radius:5px;font-size:14px}
.side a:hover{background:rgba(255,255,255,.07);text-decoration:none;color:#fff}
.side a.on{background:rgba(255,255,255,.12);color:#fff;font-weight:500}
.side a.off{opacity:.45}
.side .pill{background:#B4412F;color:#fff;border-radius:999px;font:600 11px/1 var(--f-display);padding:3px 7px}
.side .me{margin-top:auto;border-top:1px solid rgba(255,255,255,.12);padding:12px 10px 0;font-size:13px}
.side .me form{display:block;margin-top:4px}
.side .me button{background:none;border:0;color:#9FB5CE;cursor:pointer;padding:0;font:inherit}
.main{min-width:0;padding:24px clamp(16px,3vw,36px) 48px}
.topline{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:20px}
.crumb{font:500 11px/1 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.mobilebar{display:none}

/* blocks */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;min-width:0}
.card+.card,.stack>*+*{margin-top:16px}
.grid>.card{margin-top:0}
.card h2{margin-bottom:12px;display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))} .g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))} .g5{grid-template-columns:repeat(5,minmax(0,1fr))}
.kpi{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;border-top:3px solid var(--navy);min-width:0}
.kpi .l{font-size:13px;color:var(--muted)}
.kpi .v{font:600 22px/1.25 var(--f-display);font-variant-numeric:tabular-nums;margin-top:4px;overflow-wrap:anywhere}
.kpi .s{font-size:12px;color:var(--muted)}
.kpi.bad{border-top-color:var(--bad)} .kpi.warn{border-top-color:#C7922F} .kpi.good{border-top-color:var(--good)}

/* tables */
.tw{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 -4px}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:9px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{font:500 11px/1.3 var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);background:color-mix(in srgb,var(--surface) 70%,var(--bg));position:sticky;top:0}
tbody tr:hover{background:color-mix(in srgb,var(--surface) 85%,var(--bg))}
tfoot td{font-weight:600;border-top:2px solid var(--line-strong);border-bottom:0}
td .sub{display:block;font-size:12px;color:var(--muted)}
.code{font-family:var(--f-mono);font-size:12.5px;white-space:nowrap}

/* badges & alerts */
.b{display:inline-block;font-size:12px;font-weight:500;padding:2px 9px;border-radius:999px;white-space:nowrap;background:var(--concrete);color:var(--navy)}
.b.billed{background:var(--info-bg);color:var(--accent)} .b.partial{background:var(--warn-bg);color:var(--warn)}
.b.pending_approval,.b.pending{background:var(--warn-bg);color:var(--warn)} .b.paid,.b.ok,.b.received,.b.returned,.b.approved{background:var(--good-bg);color:var(--good)}
.b.cancelled,.b.rejected{background:var(--concrete);color:var(--slate);text-decoration:line-through}
.b.over,.b.due,.b.bad{background:var(--bad-bg);color:var(--bad)} .b.soon,.b.no_handover,.b.warn{background:var(--warn-bg);color:var(--warn)}
@media (prefers-color-scheme:dark){.b{background:#243750;color:#C9D5E3}}
.msg{border-radius:var(--r);padding:10px 14px;margin-bottom:16px;font-size:14px;border:1px solid}
.msg.ok{background:var(--good-bg);border-color:color-mix(in srgb,var(--good) 30%,transparent);color:var(--good)}
.msg.err{background:var(--bad-bg);border-color:color-mix(in srgb,var(--bad) 30%,transparent);color:var(--bad)}
.msg.warn{background:var(--warn-bg);border-color:color-mix(in srgb,var(--warn) 30%,transparent);color:var(--warn)}
.empty{color:var(--muted);text-align:center;padding:24px 8px}

/* forms */
label{display:block;font-size:13px;color:var(--muted);margin-bottom:4px}
input,select,textarea{font:inherit;color:var(--ink);background:var(--surface);border:1px solid var(--line-strong);border-radius:5px;padding:8px 10px;width:100%;min-width:0}
input[type=checkbox]{width:auto}
input:focus,select:focus,textarea:focus{outline:2px solid color-mix(in srgb,var(--accent) 40%,transparent);border-color:var(--accent)}
input[readonly]{background:var(--bg);color:var(--muted)}
.field{min-width:0}
.req::after{content:" *";color:var(--bad)}
.fgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px 14px}
.fgrid .wide{grid-column:1/-1}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font:500 14px/1 var(--f-body);padding:10px 16px;border-radius:5px;border:1px solid var(--navy);background:var(--navy);color:#fff;cursor:pointer;white-space:nowrap;text-decoration:none}
.btn:hover{background:var(--deep);text-decoration:none}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line-strong)}
.btn.ghost:hover{background:var(--bg)}
.btn.danger{background:var(--bad);border-color:var(--bad)}
.btn.good{background:var(--good);border-color:var(--good)}
.btn.sm{padding:6px 10px;font-size:13px}
.actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.toolbar{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:12px}
.toolbar input{max-width:280px}
.tabs{display:flex;gap:4px;flex-wrap:wrap;margin-bottom:12px}
.tabs a{padding:6px 12px;border-radius:999px;border:1px solid var(--line);font-size:13px;color:var(--muted)}
.tabs a.on{background:var(--navy);border-color:var(--navy);color:#fff}
.calc{display:grid;grid-template-columns:1fr auto;gap:6px 16px;font-variant-numeric:tabular-nums;max-width:420px}
.calc .t{border-top:2px solid var(--ink);padding-top:6px;font-weight:600}
.dl{display:grid;grid-template-columns:max-content 1fr;gap:6px 18px;font-size:14px}
.dl dt{color:var(--muted)} .dl dd{margin:0;min-width:0;overflow-wrap:anywhere}
details summary{cursor:pointer;color:var(--accent)}
.bar{height:8px;border-radius:4px;background:var(--concrete);overflow:hidden}
.bar>i{display:block;height:100%;background:var(--steel)}
.bar.over>i{background:var(--bad)}
.alert-list{list-style:none;margin:0;padding:0}
.alert-list li{display:flex;justify-content:space-between;gap:12px;padding:8px 0;border-bottom:1px solid var(--line);font-size:14px}
.alert-list li:last-child{border-bottom:0}

/* login */
.login{min-height:100vh;display:grid;place-items:center;background:var(--navy);padding:16px;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:32px 32px}
.login .box{background:var(--surface);border-radius:8px;padding:32px 28px;width:min(100%,380px);box-shadow:0 20px 50px rgba(0,0,0,.35)}
.login svg{width:150px;color:var(--navy);margin-bottom:22px}
@media (prefers-color-scheme:dark){.login svg{color:#fff}}

@media (max-width:1100px){.g5{grid-template-columns:repeat(3,minmax(0,1fr))} .g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:860px){
  .shell{grid-template-columns:1fr}
  .side{position:fixed;inset:0 auto 0 0;width:260px;z-index:30;transform:translateX(-100%);transition:transform .2s}
  .shell.open .side{transform:none;box-shadow:0 0 0 100vmax rgba(0,0,0,.4)}
  .mobilebar{display:flex;align-items:center;gap:12px;background:var(--navy);color:#fff;padding:10px 16px;position:sticky;top:0;z-index:20}
  .mobilebar button{background:none;border:1px solid rgba(255,255,255,.3);color:#fff;border-radius:4px;padding:6px 10px;font:inherit}
  .mobilebar svg{width:24px}
  .main{padding:16px 16px 40px}
  .g2,.g3{grid-template-columns:1fr}
}
@media (max-width:520px){.g4,.g5{grid-template-columns:1fr 1fr} .kpi .v{font-size:18px} h1{font-size:20px}}
@media print{.side,.mobilebar,.btn,.actions,.toolbar,form{display:none!important} .shell{display:block} body{background:#fff}}
.file-list{list-style:none;margin:0 0 10px;padding:0}
.file-list li{display:flex;flex-wrap:wrap;gap:4px 10px;align-items:baseline;padding:6px 0;border-bottom:1px dashed var(--line)}
.file-list li:last-child{border-bottom:0}
.file-list a{overflow-wrap:anywhere}
.linkbtn{background:none;border:0;color:var(--bad);cursor:pointer;font:inherit;font-size:13px;padding:0}
.upl{margin-top:4px}
.help h2{margin:22px 0 8px} .help ol,.help ul{padding-left:22px;margin:6px 0} .help li{margin:4px 0}
.help .step{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--navy);border-radius:var(--r);padding:14px 18px;margin:12px 0}
.tip{background:var(--info-bg);border-radius:var(--r);padding:10px 14px;font-size:14px;margin:10px 0}
table.rows td{padding:4px 6px} table.rows input{width:100%;min-width:0} table.rows input[type=radio]{width:auto}
tr.tot td{background:var(--concrete)}
table.rows{min-width:620px}