:root{
  --ground:#F3F5F2; --surface:#FFFFFF; --surface-2:#F7F9F6; --ink:#1B2420; --muted:#5C6962; --line:#D8DED8;
  --hl:#F5DA4E; --hl-ink:#1B2420; --hl-soft:#FBF1BE;
  --act:#17614E; --act-ink:#FFFFFF;
  --warn:#B3541E; --warn-soft:#FBE9DD;
  --ok:#2D7A4B; --ok-soft:#E1F1E6;
  --cash:#2F5E8C; --cash-soft:#E2ECF6;
  --danger:#A3322A;
  --shadow:0 14px 34px -22px rgba(20,45,35,.35);
  --display:"Bai Jamjuree","IBM Plex Sans Thai",system-ui,sans-serif;
  --body:"IBM Plex Sans Thai",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root{
    --ground:#111513; --surface:#181D1A; --surface-2:#1E2420; --ink:#E4E9E5; --muted:#9AA69F; --line:#2D3632;
    --hl:#E3C83F; --hl-ink:#1B2420; --hl-soft:#34301A;
    --act:#4FB394; --act-ink:#0E1512;
    --warn:#F0995F; --warn-soft:#3A2519;
    --ok:#6CC58F; --ok-soft:#1B3024;
    --cash:#86AEDA; --cash-soft:#1B2735;
    --danger:#F08A80;
    --shadow:0 14px 34px -22px rgba(0,0,0,.7);
    color-scheme:dark;
  }
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0}
body{background:var(--ground);color:var(--ink);font-family:var(--body);font-size:15px;line-height:1.6}
h1,h2,h3{font-family:var(--display);text-wrap:balance;margin:0;line-height:1.25}
a{color:var(--act)}
.mono{font-family:var(--mono);font-size:.92em}
.muted{color:var(--muted)}
.boot{padding:40px 20px;color:var(--muted)}

/* shell */
.topbar{display:flex;flex-wrap:wrap;align-items:center;gap:8px 22px;padding:10px 20px;background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.brand{font-family:var(--display);font-weight:700;font-size:17px}
.tabs{display:flex;flex-wrap:wrap;gap:4px}
.tab{padding:4px 12px;border-radius:6px;color:var(--muted);font-size:14px;text-decoration:none}
.tab:hover{color:var(--ink);background:var(--surface-2)}
.tab.on{background:var(--hl);color:var(--hl-ink);font-weight:600}
.usermenu{margin-left:auto;position:relative}
.menu{position:absolute;right:0;top:calc(100% + 6px);background:var(--surface);border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);display:grid;min-width:180px;padding:4px;z-index:10}
.menu button{text-align:left;border:0;background:none;padding:8px 10px;border-radius:6px;font:inherit;font-size:14px;color:var(--ink);cursor:pointer}
.menu button:hover{background:var(--surface-2)}
main{max-width:1240px;margin:0 auto;padding-inline:20px;padding-block:22px 80px;display:grid;gap:16px}

/* controls */
.toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px}
.spacer{flex:1}
.week{display:flex;align-items:center;gap:8px;font-weight:600;font-size:16px}
.arrow{width:30px;height:30px;display:grid;place-items:center;border:1px solid var(--line);border-radius:7px;color:var(--ink);text-decoration:none;background:var(--surface);font-size:15px}
.arrow:hover{border-color:var(--muted)}
.linkish{font-size:13px}
.due{font-size:14px;color:var(--muted)}
.due b{color:var(--ink)}
.btn{font:inherit;font-size:14px;padding:6px 14px;border-radius:7px;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;white-space:nowrap;text-decoration:none;display:inline-flex;align-items:center;gap:6px}
.btn:hover{border-color:var(--muted)}
.btn.primary{background:var(--act);color:var(--act-ink);border-color:var(--act);font-weight:600}
.btn.danger{color:var(--danger);border-color:transparent;background:none}
.btn.small{font-size:12.5px;padding:2px 10px}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--act);outline-offset:2px}
.icon-btn{border:0;background:none;color:var(--muted);font-size:20px;line-height:1;cursor:pointer;padding:4px 8px;border-radius:6px}
.icon-btn:hover{background:var(--surface-2);color:var(--danger)}
label{display:grid;gap:3px;font-size:12.5px;color:var(--muted);font-weight:500}
input,select{font:inherit;font-size:14.5px;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:6px 9px;width:100%;min-width:0;font-variant-numeric:tabular-nums}
input[type=checkbox],input[type=radio]{width:auto;accent-color:var(--act)}
input.bad{border-color:var(--warn);background:var(--warn-soft)}

.panel{background:var(--surface);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow)}
.pill{display:inline-block;font-size:12.5px;padding:2px 10px;border-radius:999px;font-weight:600;text-decoration:none}
.pill.locked{background:var(--hl);color:var(--hl-ink)}
.banner{font-size:14px;padding:10px 14px;border-radius:8px;background:var(--hl-soft);border:1px solid var(--line)}
.empty{padding:36px 20px;text-align:center;color:var(--muted)}

/* tables */
.scroll{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}
th{font-size:12.5px;font-weight:600;letter-spacing:.02em;text-align:left;background:var(--hl-soft);padding:8px 12px;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:7px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.n{text-align:right;white-space:nowrap}
.nowrap{white-space:nowrap}
tfoot td{font-weight:700;border-top:2px solid var(--ink);border-bottom:none}
.trip-row td{background:var(--surface-2);font-weight:600;border-top:2px solid var(--line)}
.trip-row td.detail{font-weight:400}
tbody.clickable{cursor:pointer}
tbody.clickable:hover .trip-row td{background:var(--hl-soft)}
.pay td{font-size:14px}
.who-cell{padding-left:26px;position:relative}
.who-cell::before{content:"";position:absolute;left:12px;top:7px;width:7px;height:10px;border-left:1px solid var(--muted);border-bottom:1px solid var(--muted)}
.detail{color:var(--muted)}
.chip{display:inline-block;font-size:11.5px;line-height:1.55;padding:0 8px;border-radius:999px;margin-left:6px;font-weight:500;white-space:nowrap;vertical-align:1px}
.chip.transfer{color:var(--ok);background:var(--ok-soft)}
.chip.cash{color:var(--cash);background:var(--cash-soft)}
.chip.stat{color:var(--muted);border:1px solid var(--line)}
.chip.warn{color:var(--warn);background:var(--warn-soft)}
.chip.off{color:var(--muted);background:var(--surface-2);border:1px solid var(--line)}
.rule{display:inline-block;font-size:12.5px;padding:1px 8px;border-radius:5px;background:var(--surface-2);border:1px solid var(--line)}

/* trip form */
.form{padding:16px;display:grid;gap:14px}
.form-title{display:flex;justify-content:space-between;align-items:center;gap:10px}
.form-title h3{font-size:17px;font-weight:600}
.fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;align-items:start}
.section-label{font-size:13px;font-weight:600;color:var(--ink);display:flex;gap:10px;align-items:baseline;flex-wrap:wrap}
.section-label span{font-weight:400;color:var(--muted);font-size:12.5px}
.lines{display:grid;gap:10px}
.pl{display:grid;grid-template-columns:minmax(200px,1.6fr) minmax(180px,1.6fr) 120px 36px;gap:10px 12px;align-items:start;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--surface-2)}
@media (max-width:760px){.pl{grid-template-columns:1fr 1fr}.pl .icon-btn{justify-self:end}}
.pl-who b{font-weight:600}
.pl-who .rule{margin-top:4px;display:block;width:max-content;max-width:100%}
.pl-check{grid-column:1/-1}
.pl-check:empty{display:none}
.addons{border:0;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:4px 14px}
.addons legend{font-size:12.5px;color:var(--muted);font-weight:500;padding:0;margin-bottom:3px}
.cb{display:flex;align-items:center;gap:6px;font-size:13.5px;color:var(--ink);font-weight:400}
.flat-note{font-size:13px;color:var(--muted);padding-top:22px}
.check{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;font-size:13.5px;padding:8px 12px;border-radius:6px}
.check.bad{background:var(--warn-soft);color:var(--warn)}
.check input{max-width:360px;flex:1}
.quick{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.chip-btn{font:inherit;font-size:13.5px;border:1px dashed var(--act);color:var(--act);background:none;border-radius:999px;padding:3px 12px;cursor:pointer}
.chip-btn:hover{background:var(--ok-soft)}
.quick select{width:auto;max-width:280px}
.hint{font-size:13px;color:var(--muted)}
.form-error{font-size:14px;color:var(--danger);background:var(--warn-soft);padding:8px 12px;border-radius:6px}
.form-total{font-size:14px;color:var(--muted)}
.form-total b{font-family:var(--display);font-size:20px;color:var(--ink)}

/* voucher */
.voucher{padding:18px;display:grid;gap:16px}
.voucher-head{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;align-items:flex-start}
.voucher-head h2{font-size:20px;font-weight:600}
.meta{font-size:13.5px;color:var(--muted)}
.steps{display:flex;font-size:13px;border:1px solid var(--line);border-radius:999px;overflow:hidden}
.steps span{padding:3px 14px;color:var(--muted)}
.steps span+span{border-left:1px solid var(--line)}
.steps .on{background:var(--hl);color:var(--hl-ink);font-weight:600}
.steps .done{color:var(--ok)}
.totals{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:8px;overflow:hidden}
.totals div{background:var(--surface);padding:10px 14px;display:grid}
.totals .lbl{font-size:12.5px;color:var(--muted)}
.totals .val{font-family:var(--display);font-size:26px;font-weight:600;font-variant-numeric:tabular-nums}
.totals .grand{background:var(--hl-soft)}
.subhead{font-size:14px;font-weight:600;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.notice{font-size:13.5px;padding:10px 14px;border-radius:8px;background:var(--warn-soft);color:var(--warn);display:grid;gap:4px}
.notice ul{margin:0;padding-left:18px}
.paid{color:var(--ok);font-size:13px;white-space:nowrap}
.paybox{display:flex;flex-wrap:wrap;gap:10px;align-items:end;padding:6px 0}
.paybox label{min-width:240px}
.petty{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px;align-items:start}
@media (max-width:760px){.petty{grid-template-columns:1fr}}
.petty .box{border:1px solid var(--line);border-radius:8px;padding:12px 14px;display:grid;gap:6px;background:var(--cash-soft);align-content:start}
.petty .box p{margin:0;font-size:14px}
.gauge{height:10px;border-radius:999px;background:var(--surface);border:1px solid var(--line);overflow:hidden}
.gauge i{display:block;height:100%;background:var(--cash)}
.gauge.over i{background:var(--warn)}
.gauge-lbl{display:flex;justify-content:space-between;font-size:12.5px;color:var(--muted)}
.print-only{display:none}
.signs{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px;font-size:13px;text-align:center}
.signs div{border-top:1px solid #000;padding-top:6px}

/* payees */
.two{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:20px;align-items:start}
@media (max-width:1000px){.two{grid-template-columns:1fr}}
.side{display:grid;gap:16px}
.side .panel{padding:14px;display:grid;gap:10px}
.side h3{font-size:15px;font-weight:600}
.brow{display:grid;grid-template-columns:1fr auto auto;gap:8px;align-items:center}
.radios{display:grid;gap:6px}
.radios label{display:flex;gap:8px;align-items:flex-start;font-size:14px;color:var(--ink);font-weight:400}
.addon-rows{display:grid;gap:6px}
.addon-row{display:grid;grid-template-columns:1fr 110px 36px;gap:8px}
tr.inactive td{color:var(--muted)}

/* modal + toast + login */
.modal-wrap{position:fixed;inset:0;background:rgba(10,20,15,.45);display:grid;place-items:center;padding:16px;z-index:20}
.modal{width:min(420px,100%);padding:18px;display:grid;gap:12px}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--ink);color:var(--ground);padding:9px 18px;border-radius:8px;font-size:14px;z-index:30;box-shadow:var(--shadow);max-width:calc(100% - 32px)}
.toast.err{background:var(--danger);color:#fff}
.login{min-height:100vh;display:grid;place-items:center;padding:20px}
.login .panel{width:min(380px,100%);padding:24px;display:grid;gap:14px}
.login h1{font-size:24px}
.login .sub{margin:0;color:var(--muted);font-size:14px}

@media print{
  body{background:#fff;color:#000;font-size:12px}
  .topbar,.no-print,.toolbar,.btn,.paybox{display:none!important}
  main{padding:0;max-width:none}
  .panel{box-shadow:none;border:0}
  .print-only{display:block}
  th{background:#eee!important;-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .totals .grand{background:#eee!important;-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .chip{border:1px solid #999;background:none!important;color:#000!important}
  a{color:#000;text-decoration:none}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}