/* Normal Day Billing — interface.
   Same palette and type as the scope document: a ledger green on warm-neutral
   paper, IBM Plex Sans Thai for the interface, Sarabun for anything that
   represents a printed document. */

/* Two fixed looks, picked with the ขาว | ดำ switch in the top bar and kept in
   a cookie per browser. Light is the default whatever the Mac is set to.
   Printed documents are always black on white — that is print.css, which
   neither look touches. */
:root{
  color-scheme:light;
  --paper:#FFFFFF; --card:#FFFFFF;
  --ink:#111111; --ink-2:#4C574F; --ink-3:#79857B;
  --rule:#E3E6DF; --rule-soft:#EEF0EB;
  --green:#1F6F5C; --green-soft:#E3EFE9; --on-green:#FFFFFF;
  --oxide:#A93F30; --oxide-soft:#F7E8E4;
  --amber:#8A6413; --amber-soft:#F5ECD9;
  --shadow:0 1px 2px rgba(20,28,25,.06),0 8px 24px rgba(20,28,25,.05);
}
/* Dark: a black ground, and the text itself in the ledger green. */
:root[data-theme="dark"]{
  color-scheme:dark;
  --paper:#000000; --card:#0D0F0D;
  --ink:#6FC3A6; --ink-2:#58A88C; --ink-3:#4F8F78;
  --rule:#243029; --rule-soft:#141A16;
  --green:#6FC3A6; --green-soft:#0F2019; --on-green:#000000;
  --oxide:#E28C7A; --oxide-soft:#291A17;
  --amber:#D6A85B; --amber-soft:#26200F;
  --shadow:0 1px 2px rgba(0,0,0,.5),0 10px 30px rgba(0,0,0,.45);
}

*{box-sizing:border-box}
html,body{margin:0}
body{
  background:var(--paper); color:var(--ink);
  font-family:"IBM Plex Sans Thai","IBM Plex Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:15px; line-height:1.6; -webkit-font-smoothing:antialiased;
}
a{color:var(--green);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:2px solid var(--green);outline-offset:2px}
h1,h2,h3{margin:0;text-wrap:balance}
.mono,.num{font-family:"IBM Plex Mono",ui-monospace,monospace;font-variant-numeric:tabular-nums}

/* ---------- shell ---------- */
.topbar{background:var(--card);border-bottom:1px solid var(--rule);position:sticky;top:0;z-index:20}
.topbar-in{max-width:1140px;margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:22px;min-height:56px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:9px;font-weight:600;letter-spacing:-.01em;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand svg{display:block}
nav.main{display:flex;gap:2px;flex:1;flex-wrap:wrap}
nav.main a{
  padding:7px 12px;color:var(--ink-2);font-size:14px;border-radius:2px;
}
nav.main a:hover{background:var(--rule-soft);text-decoration:none}
nav.main a.on{color:var(--ink);background:var(--green-soft);box-shadow:inset 0 -2px 0 var(--green)}
.topbar .who{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--ink-3)}
.topbar .who b{color:var(--ink);font-weight:500}
.topbar form{display:inline}
.linkbtn{background:none;border:none;font:inherit;font-size:12.5px;color:var(--ink-3);cursor:pointer;padding:0}
.linkbtn:hover{color:var(--oxide)}

main{max-width:1140px;margin:0 auto;padding:26px 20px 80px}
.page-head{display:flex;gap:16px;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;margin-bottom:20px;padding-bottom:12px;border-bottom:1px solid var(--rule)}
.page-head h1{font-size:22px;font-weight:600;letter-spacing:-.01em}
.page-head .sub{font-size:13px;color:var(--ink-3);margin-top:2px}
.actions{display:flex;gap:8px;flex-wrap:wrap}

/* ---------- flash ---------- */
.flash{padding:10px 14px;margin-bottom:18px;font-size:14px;border-left:2px solid var(--green);background:var(--green-soft);color:var(--ink)}
.flash.err{border-left-color:var(--oxide);background:var(--oxide-soft)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:7px;font:inherit;font-size:14px;
  padding:8px 15px;border:1px solid var(--rule);background:var(--card);color:var(--ink);
  cursor:pointer;border-radius:2px;line-height:1.3;
}
.btn:hover{border-color:var(--ink-3);text-decoration:none}
.btn.primary{background:var(--green);border-color:var(--green);color:var(--on-green)}
.btn.primary:hover{filter:brightness(1.08)}
.btn.danger{color:var(--oxide);border-color:var(--oxide)}
.btn.danger:hover{background:var(--oxide-soft)}
.btn.sm{padding:5px 10px;font-size:13px}
.btn[disabled]{opacity:.45;cursor:not-allowed}

/* ---------- cards & tiles ---------- */
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:1px;background:var(--rule);border:1px solid var(--rule);margin-bottom:22px}
.tile{background:var(--card);padding:15px 17px 17px}
.tile .k{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
.tile .v{font-family:"IBM Plex Mono",monospace;font-variant-numeric:tabular-nums;font-size:26px;font-weight:500;letter-spacing:-.02em;margin-top:5px;line-height:1.1}
.tile .v small{font-size:14px;color:var(--ink-3);font-weight:400}
.tile .n{font-size:12.5px;color:var(--ink-3);margin-top:3px}
.tile.warn .v{color:var(--oxide)}

.panel{background:var(--card);border:1px solid var(--rule);margin-bottom:22px}
.panel > h2{font-size:14px;font-weight:600;padding:13px 17px;border-bottom:1px solid var(--rule)}
.panel > h2 .hint{font-weight:400;color:var(--ink-3);font-size:12.5px;margin-left:8px}
.panel-body{padding:17px}

/* ---------- vat meter ---------- */
.meter-wrap{background:var(--card);border:1px solid var(--rule);padding:16px 18px 18px;margin-bottom:22px}
.meter-head{display:flex;justify-content:space-between;align-items:baseline;gap:16px;flex-wrap:wrap;margin-bottom:11px}
.meter-head .lbl{font-size:13px;color:var(--ink-2)}
.meter-head .fig{font-family:"IBM Plex Mono",monospace;font-variant-numeric:tabular-nums;font-size:15px}
.meter-head .fig b{font-weight:500}
.meter-head .fig span{color:var(--ink-3)}
.meter{position:relative;height:12px;background:var(--rule-soft);border:1px solid var(--rule)}
.meter .fill{position:absolute;inset:0 auto 0 0;background:var(--green)}
.meter.alert .fill{background:var(--amber)}
.meter.over .fill{background:var(--oxide)}
.meter .alertline{position:absolute;top:-4px;bottom:-4px;width:1px;background:var(--ink-3)}
.meter-foot{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-top:8px;font-size:12px;color:var(--ink-3)}
.meter-msg{margin-top:11px;font-size:13px;padding:9px 13px;border-left:2px solid var(--amber);background:var(--amber-soft);color:var(--ink)}
.meter-msg.over{border-left-color:var(--oxide);background:var(--oxide-soft)}

/* ---------- tables ---------- */
.tblwrap{overflow-x:auto;background:var(--card);border:1px solid var(--rule);margin-bottom:22px}
table.grid{width:100%;border-collapse:collapse;font-size:14px;min-width:620px}
table.grid th{
  text-align:left;font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);
  font-weight:500;padding:10px 14px;border-bottom:1px solid var(--rule);white-space:nowrap;background:var(--card);
}
table.grid td{padding:10px 14px;border-bottom:1px solid var(--rule-soft);vertical-align:middle}
table.grid tr:last-child td{border-bottom:none}
table.grid tbody tr:hover td{background:var(--rule-soft)}
table.grid td.r,table.grid th.r{text-align:right;font-family:"IBM Plex Mono",monospace;font-variant-numeric:tabular-nums;white-space:nowrap}
table.grid .doclink{font-family:"IBM Plex Mono",monospace;font-size:13px}
table.grid .cust{font-family:"Sarabun",sans-serif;font-weight:600}
table.grid tr.is-overdue td:first-child{box-shadow:inset 3px 0 0 var(--oxide)}
table.grid tr.is-void td{opacity:.5}
.empty{padding:36px 20px;text-align:center;color:var(--ink-3);font-size:14px}

/* ---------- status pills ---------- */
.pill{
  display:inline-flex;align-items:center;gap:5px;font-size:11.5px;padding:2px 9px;
  border:1px solid var(--rule);color:var(--ink-2);white-space:nowrap;border-radius:2px;
}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ink-3)}
.pill.draft::before{background:var(--ink-3)}
.pill.issued{border-color:var(--green);color:var(--green)}
.pill.issued::before{background:var(--green)}
.pill.partial{border-color:var(--amber);color:var(--amber)}
.pill.partial::before{background:var(--amber)}
.pill.paid{border-color:var(--green);color:var(--green);background:var(--green-soft)}
.pill.paid::before{background:var(--green)}
.pill.overdue{border-color:var(--oxide);color:var(--oxide);background:var(--oxide-soft)}
.pill.overdue::before{background:var(--oxide)}
.pill.void{text-decoration:line-through}

/* ---------- forms ---------- */
.field{margin-bottom:15px}
.field > label{display:block;font-size:12px;color:var(--ink-2);margin-bottom:4px;letter-spacing:.01em}
.field .hint{font-size:12px;color:var(--ink-3);margin-top:4px}
input[type=text],input[type=email],input[type=password],input[type=date],input[type=number],select,textarea{
  width:100%;font:inherit;font-size:14px;padding:8px 10px;
  border:1px solid var(--rule);background:var(--card);color:var(--ink);border-radius:2px;
}
input:focus,select:focus,textarea:focus{border-color:var(--green);outline:none;box-shadow:0 0 0 2px var(--green-soft)}
input[readonly]{background:var(--rule-soft);color:var(--ink-3)}
textarea{min-height:70px;resize:vertical}
.row{display:grid;gap:0 16px}
.row.c2{grid-template-columns:1fr 1fr}
.row.c3{grid-template-columns:1fr 1fr 1fr}
.row.c4{grid-template-columns:repeat(4,1fr)}
@media (max-width:760px){.row.c2,.row.c3,.row.c4{grid-template-columns:1fr}}
.check{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2)}
.check input{width:auto}
fieldset{border:none;padding:0;margin:0 0 8px}
legend{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);padding:0 0 8px}

/* ---------- document editor ---------- */
.editor{display:grid;grid-template-columns:1fr 320px;gap:22px;align-items:start}
@media (max-width:940px){.editor{grid-template-columns:1fr}}
.side{position:sticky;top:76px}
table.lines{width:100%;border-collapse:collapse;font-size:14px}
table.lines th{
  text-align:left;font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);
  font-weight:500;padding:0 8px 7px;border-bottom:1px solid var(--rule);
}
table.lines th.r{text-align:right}
table.lines td{padding:6px 8px;border-bottom:1px solid var(--rule-soft);vertical-align:top}
table.lines td:first-child,table.lines th:first-child{padding-left:0;width:24px;color:var(--ink-3);font-size:12px;padding-top:14px}
table.lines td:last-child,table.lines th:last-child{padding-right:0}
table.lines input{padding:6px 8px}
table.lines .qty,table.lines .price{text-align:right;font-family:"IBM Plex Mono",monospace}
table.lines .amt{font-family:"IBM Plex Mono",monospace;font-variant-numeric:tabular-nums;text-align:right;padding-top:14px;white-space:nowrap}
table.lines .detail input{font-size:12.5px;color:var(--ink-3);margin-top:4px}
.col-qty{width:82px}.col-unit{width:74px}.col-price{width:112px}.col-amt{width:104px}.col-del{width:34px}
.delline{background:none;border:none;color:var(--ink-3);cursor:pointer;font-size:16px;line-height:1;padding:12px 4px}
.delline:hover{color:var(--oxide)}
.lines-foot{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.totals-box{border-top:1px solid var(--rule);margin-top:16px;padding-top:12px;display:flex;justify-content:flex-end}
.totals-box dl{display:grid;grid-template-columns:auto 130px;gap:6px 20px;font-size:14px;min-width:280px}
.totals-box dt{color:var(--ink-2)}
.totals-box dd{margin:0;text-align:right;font-family:"IBM Plex Mono",monospace;font-variant-numeric:tabular-nums}
.totals-box .grand dt,.totals-box .grand dd{font-weight:600;font-size:17px;border-top:1px solid var(--rule);padding-top:8px;margin-top:4px}
.words-line{margin-top:10px;font-size:12.5px;color:var(--ink-3);text-align:right;font-family:"Sarabun",sans-serif}

.locked{border:1px dashed var(--rule);padding:11px 13px;font-size:12.5px;color:var(--ink-3);background:var(--rule-soft)}
.locked b{color:var(--ink-2);font-weight:500}

/* ---------- document view ---------- */
.docview{display:grid;grid-template-columns:1fr 300px;gap:22px;align-items:start}
@media (max-width:940px){.docview{grid-template-columns:1fr}}
.meta-list{display:grid;grid-template-columns:auto 1fr;gap:7px 16px;font-size:13.5px}
.meta-list dt{color:var(--ink-3)}
.meta-list dd{margin:0;font-family:"IBM Plex Mono",monospace;font-variant-numeric:tabular-nums}
.meta-list dd.txt{font-family:"Sarabun",sans-serif}
.preview-frame{border:1px solid var(--rule);background:#fff;box-shadow:var(--shadow);overflow:hidden}
.preview-frame iframe{display:block;width:100%;height:940px;border:none;background:#fff}

/* ---------- login ---------- */
.login-wrap{min-height:100vh;display:grid;place-items:center;padding:24px}
.login-card{width:100%;max-width:360px;background:var(--card);border:1px solid var(--rule);padding:30px 28px 26px;box-shadow:var(--shadow)}
.login-card .mark{margin-bottom:22px}
.login-card h1{font-size:17px;font-weight:600;margin-bottom:18px}
.login-card .btn{width:100%;justify-content:center;margin-top:6px}
.login-foot{margin-top:18px;font-size:12px;color:var(--ink-3);text-align:center}

/* ---------- audit ---------- */
.audit{font-size:12.5px;font-family:"IBM Plex Mono",monospace;color:var(--ink-2)}
.audit div{padding:5px 0;border-bottom:1px solid var(--rule-soft);display:grid;grid-template-columns:130px 90px 1fr;gap:12px}
.audit div:last-child{border-bottom:none}
.audit .a{color:var(--green)}

.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px;align-items:center}
.filters select,.filters input{width:auto;min-width:130px}
.tabs{display:inline-flex;border:1px solid var(--rule);background:var(--card);margin-bottom:16px}
.tabs a{padding:6px 14px;font-size:13.5px;color:var(--ink-2)}
.tabs a + a{border-left:1px solid var(--rule)}
.tabs a.on{background:var(--green);color:var(--on-green)}
.tabs a:hover{text-decoration:none}

@media (prefers-reduced-motion:no-preference){
  .btn,nav.main a,.tabs a{transition:background .12s ease,border-color .12s ease,color .12s ease}
}

/* row sublines in list tables */
.rowsub{font-size:11.5px;color:var(--ink-3);margin-top:1px;font-family:"IBM Plex Sans Thai",sans-serif}

/* ---------- Phase 2: more statuses, the chain, the invoice picker ---------- */
.pill.converted{border-color:var(--green);color:var(--green)}
.pill.converted::before{background:var(--green)}
.pill.expired{border-style:dashed;color:var(--ink-3)}
.pill.expired::before{background:var(--ink-3)}

/* the six type tabs wrap on a narrow screen instead of scrolling off */
.tabs{flex-wrap:wrap}
.tabs a{white-space:nowrap}

/* a banner on a document that was created from another one */
.lineage{
  display:flex;gap:10px;align-items:baseline;flex-wrap:wrap;
  padding:9px 13px;margin-bottom:16px;font-size:13px;
  background:var(--green-soft);border-left:2px solid var(--green);
}
.lineage .k{color:var(--ink-2)}
.lineage .mono{font-size:13px}

/* billing note: the invoices being put on the note */
.invoice-pick{border:1px solid var(--rule)}
.invoice-pick label{
  display:grid;grid-template-columns:22px 1fr auto;gap:10px;align-items:baseline;
  padding:10px 13px;border-bottom:1px solid var(--rule-soft);cursor:pointer;
}
.invoice-pick label:last-child{border-bottom:none}
.invoice-pick label:hover{background:var(--rule-soft)}
.invoice-pick input{width:auto;margin:0}
.invoice-pick .no{font-family:"IBM Plex Mono",monospace;font-size:13.5px}
.invoice-pick .sub{font-size:12px;color:var(--ink-3)}
.invoice-pick .amt{font-family:"IBM Plex Mono",monospace;font-variant-numeric:tabular-nums;text-align:right}
.invoice-pick .amt small{display:block;font-size:11.5px;color:var(--ink-3)}
.invoice-pick .late{color:var(--oxide)}

/* the settlement trail on a document view */
.trail{display:grid;gap:7px;font-size:13px}
.trail div{display:flex;justify-content:space-between;gap:14px}
.trail .mono{font-size:13px}
.trail .amt{font-family:"IBM Plex Mono",monospace;font-variant-numeric:tabular-nums}
.trail .neg{color:var(--oxide)}

/* next-step buttons stack in the side column */
.steps{display:grid;gap:8px}
.steps .btn{justify-content:center}

/* ---------- reports ---------- */
.tabs.sub{margin-top:4px}
.filters label.inline{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-3)}
.filters label.inline input,.filters label.inline select{margin:0}
.filters .spacer{flex:1}
.filters .presets{display:inline-flex;gap:2px;flex-wrap:wrap;margin-left:auto}
.filters .presets a{
  font-size:12.5px;padding:4px 9px;border:1px solid var(--rule);color:var(--ink-2);background:var(--card);
}
.filters .presets a:hover{text-decoration:none;border-color:var(--green)}
.filters .presets a.on{background:var(--green-soft);border-color:var(--green);color:var(--green)}
.inlineform{display:inline}
.muted{color:var(--ink-3)}
h2.sec{font-size:13px;font-weight:600;letter-spacing:.02em;color:var(--ink-2);margin:26px 0 10px}
.foot-note{font-size:12.5px;color:var(--ink-3);margin:0 0 22px;max-width:70ch}
.foot-note.warnnote{color:var(--amber);border-left:2px solid var(--amber);padding-left:10px}

.tiles.ag{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.tile.total{border-color:var(--green);background:var(--green-soft)}
.tile .v.sm{font-size:19px}
table.grid td.late{color:var(--oxide)}
table.grid tfoot td{
  border-top:1px solid var(--rule);padding:10px 14px;font-weight:600;
  background:var(--rule-soft);white-space:nowrap;
}
table.grid tfoot td.r{text-align:right;font-family:"IBM Plex Mono",monospace;font-variant-numeric:tabular-nums}

/* the little month histogram above the sales table */
.bars{
  display:flex;gap:6px;align-items:flex-end;background:var(--card);border:1px solid var(--rule);
  padding:16px 16px 10px;margin-bottom:22px;overflow-x:auto;
}
.bars .bar{flex:1 0 46px;text-align:center}
.bars .col{height:96px;display:flex;align-items:flex-end;justify-content:center}
.bars .col span{display:block;width:70%;background:var(--green);min-height:2px}
.bars .lb{font-size:11.5px;color:var(--ink-3);margin-top:6px}
.bars .vl{font-size:10.5px;color:var(--ink-3)}

/* the tax working: a column of figures that has to read like a form */
table.calc{width:100%;border-collapse:collapse;font-size:14px;margin-bottom:18px}
table.calc td{padding:7px 0}
table.calc td.r{
  text-align:right;font-family:"IBM Plex Mono",monospace;font-variant-numeric:tabular-nums;white-space:nowrap;
}
table.calc tr.sub td{color:var(--ink-2)}
table.calc tr.rule td{border-top:1px solid var(--rule);font-weight:600}
table.calc tr.strong td{font-weight:600}
table.calc tr.big td{font-size:18px;padding-top:12px}
table.calc tr.muted td{color:var(--ink-3)}
table.calc tr.hit td{color:var(--amber);font-weight:600}
table.calc .hint{font-size:11.5px;color:var(--ink-3);font-weight:400}
table.grid.bands{min-width:0;margin-bottom:18px;border:1px solid var(--rule)}
table.grid.bands tr.zero td{color:var(--ink-3)}

@media print{
  .topbar,.noprint,.flash,.tabs{display:none !important}
  body{background:#fff}
  main{padding:0;max-width:none}
  .tile,.panel,.tblwrap,.bars{break-inside:avoid;box-shadow:none}
}

/* ---------- practice copy ---------- */
.practice-bar{
  background:var(--amber-soft);color:var(--amber);border-bottom:1px solid var(--amber);
  text-align:center;font-size:13px;font-weight:600;padding:7px 14px;line-height:1.4;
}

/* ---------- the ขาว | ดำ switch ---------- */
.themeswitch{display:inline-flex;border:1px solid var(--rule);vertical-align:middle}
.themeswitch a{padding:1px 9px;font-size:12.5px;color:var(--ink-2)}
.themeswitch a + a{border-left:1px solid var(--rule)}
.themeswitch a:hover{text-decoration:none;background:var(--rule-soft)}
.themeswitch a.on{background:var(--green);color:var(--on-green)}
.login-foot .themeswitch{margin-right:10px}