:root{
  --bg:#f4f6f8; --panel:#fff; --ink:#1c2530; --muted:#6b7785;
  --line:#e3e8ee; --brand:#1f6feb; --brand-d:#1550b3; --ok:#127a3b; --err:#b3261e;
  --num:#0b3d2e;
}
*{box-sizing:border-box}
body{margin:0;font-family:"Segoe UI",system-ui,"Noto Sans Thai",Tahoma,sans-serif;
  background:var(--bg);color:var(--ink);font-size:14px}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:var(--panel);border-bottom:1px solid var(--line);padding:12px 20px;
  position:sticky;top:0;z-index:5}
.topbar h1{font-size:18px;margin:0}
.back{margin-right:6px}
.search{display:flex;gap:8px;flex:1;max-width:720px;flex-wrap:wrap}
/* list header: two rows — title/nav/user on top, search full-width below */
.topbar-list{flex-direction:column;align-items:stretch;gap:10px}
.topbar-list .bar-row{display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar-list .search{max-width:none;flex:1 1 auto}
.topbar-list .search input{min-width:220px}
.rangelbl{display:flex;align-items:center;gap:6px;color:var(--muted);font-size:13px;white-space:nowrap}
.rangelbl input{min-width:0;padding:8px 10px;border:1px solid var(--line);border-radius:8px}
.search input{flex:1;min-width:160px;padding:8px 12px;border:1px solid var(--line);border-radius:8px}
.search select{padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink)}
button,.btn-light{padding:8px 14px;border:1px solid var(--line);border-radius:8px;
  background:var(--brand);color:#fff;cursor:pointer;font-size:14px}
button:hover{background:var(--brand-d)}
.btn-light{background:#fff;color:var(--brand)}
main{max-width:1200px;margin:0 auto;padding:20px}
.meta{color:var(--muted);margin:4px 0 14px}
.rolechip{display:inline-block;padding:1px 8px;border-radius:10px;background:#eef2f7;
  color:var(--muted);font-size:12px;border:1px solid var(--line)}
.del-inline{display:inline;margin:0}
.del-ic{background:none;border:none;padding:0 2px;cursor:pointer;font-size:14px;color:inherit}
.del-ic:hover{background:none}
.userform{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end}
.userform label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted)}
.userform input,.userform select{padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink)}
.chk{display:flex;align-items:center;gap:6px;white-space:nowrap}
.range-summary{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 16px}
.range-summary .rs-item{background:var(--panel);border:1px solid var(--line);
  border-radius:8px;padding:8px 14px;font-size:14px;color:var(--muted)}
.range-summary .rs-item strong{color:var(--text,#111);font-size:15px}
.range-summary .rs-total{background:var(--brand);border-color:var(--brand);color:#fff}
.range-summary .rs-total strong{color:#fff}
.grid{width:100%;border-collapse:collapse;background:var(--panel);
  border:1px solid var(--line);border-radius:10px;overflow:hidden}
.grid th,.grid td{padding:9px 12px;border-bottom:1px solid var(--line);text-align:left}
.grid th{background:#fafbfc;color:var(--muted);font-weight:600;font-size:12px;
  text-transform:uppercase;letter-spacing:.03em}
.sortlink{color:inherit;font:inherit;display:inline-block;white-space:nowrap}
.sortlink:hover{color:var(--brand);text-decoration:none}
.sortlink.on{color:var(--brand-d)}
.num .sortlink{display:block}
.grid tbody tr:hover{background:#f7f9fc}
.num{text-align:right;font-variant-numeric:tabular-nums;color:var(--num)}
.strong{font-weight:700}
.muted{color:var(--muted)}
.empty{text-align:center;color:var(--muted);padding:24px}
.pill{display:inline-block;padding:2px 8px;border-radius:999px;background:#eef2f7;
  color:#425466;font-size:12px}
.pager{display:flex;gap:14px;align-items:center;justify-content:center;margin:16px 0}
.pager a{padding:6px 12px;border:1px solid var(--line);border-radius:8px;background:#fff}
/* card */
.cardhead{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px 20px;margin-bottom:18px}
.cardhead h2{margin:0 0 6px}
.sub{color:var(--muted)}
.balances{display:flex;gap:10px;flex-wrap:wrap}
.bal{min-width:120px;background:#fafbfc;border:1px solid var(--line);border-radius:10px;padding:10px 14px;text-align:right}
.bal span{display:block;color:var(--muted);font-size:12px}
.bal b{font-size:18px;color:var(--num)}
.bal.total{background:#eef4ff;border-color:#cfe0ff}
.bal.total b{color:var(--brand-d)}
.bal.accrued{background:#fff7e6;border-color:#f5d99a}
.bal.accrued b{color:#b9770e}
/* contract status editor */
.statusform{display:flex;gap:10px;align-items:flex-end;flex-wrap:wrap;margin-top:12px}
.statusform label{display:flex;flex-direction:column;gap:4px;color:var(--muted);font-size:12px}
.statusform select,.statusform input{padding:8px 12px;border:1px solid var(--line);border-radius:8px;color:var(--ink);background:#fff}
.statushint{flex-basis:100%;margin-top:2px}
.ledgerwrap h3,.addpay h3,.quotebox h3{margin:18px 0 10px}
/* ยอดถึงวันนี้ quote box */
.quotebox{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px 20px;margin-bottom:18px}
.quote-controls{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-bottom:14px}
.quote-controls label{display:flex;flex-direction:column;gap:4px;color:var(--muted);font-size:12px}
.quote-controls input{padding:8px 12px;border:1px solid var(--line);border-radius:8px;color:var(--ink)}
.quote-grid{display:flex;gap:10px;flex-wrap:wrap}
.qcell{min-width:130px;background:#fafbfc;border:1px solid var(--line);border-radius:10px;padding:10px 14px;text-align:right}
.qcell span{display:block;color:var(--muted);font-size:12px}
.qcell b{font-size:18px;color:var(--num)}
.qcell.total{background:#eef4ff;border-color:#cfe0ff;min-width:200px}
.qcell.total b{color:var(--brand-d);font-size:20px}
.disc-title{margin:16px 0 8px}
.disc-table{max-width:520px}
/* import page */
.importpanel{max-width:680px;margin-bottom:16px}
.importpanel form{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:10px}
.importpanel input[type=file]{padding:7px;border:1px solid var(--line);border-radius:8px;background:#fff}
/* edit latest payment + confirm modal */
.edit-ic{margin-left:6px;text-decoration:none;opacity:.75}
.edit-ic:hover{opacity:1;text-decoration:none}
.addpay #cancel-edit{margin-left:8px}
.modal-overlay{position:fixed;inset:0;background:rgba(15,25,40,.45);display:flex;align-items:center;justify-content:center;z-index:50;padding:20px}
.modal{background:#fff;border-radius:14px;padding:22px 24px;max-width:420px;width:100%;box-shadow:0 12px 40px rgba(0,0,0,.25)}
.modal h3{margin:0 0 14px}
.pm-rows>div{display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px solid var(--line)}
.pm-rows>div span{color:var(--muted)}
.pm-rows .pm-amt b{font-size:20px;color:var(--brand-d)}
.pm-rows .pm-words{display:block;text-align:right;color:#333;border:0;padding-top:8px}
.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}
/* print receipt buttons/icons */
.btn-print{font-size:13px;font-weight:600;color:var(--brand);margin-left:10px;white-space:nowrap}
.print-ic{margin-left:6px;text-decoration:none;opacity:.7}
.print-ic:hover{opacity:1;text-decoration:none}
/* wide grouped ledger — scroll both ways with a frozen (sticky) header */
.scrollx{overflow:auto;max-height:62vh;border:1px solid var(--line);border-radius:10px}
/* border-collapse:separate is REQUIRED for a sticky thead: with `collapse` the
   header's borders belong to the table (not the cells), so they scroll away and
   body rows bleed through the frozen header. With `separate` each th keeps its own
   background + inset border line while stuck. */
/* overflow:visible is REQUIRED: .grid sets overflow:hidden (for its rounded
   corners), but any ancestor with overflow!=visible between a sticky th and the
   scroll container captures the stickiness, so the header scrolls away instead of
   freezing. The rounded border is provided by the .scrollx wrapper here. */
.ledger{border:0;border-radius:0;font-size:12.5px;min-width:1500px;overflow:visible;
  border-collapse:separate;border-spacing:0}
.ledger th,.ledger td{padding:6px 8px;white-space:nowrap}
/* Header separator is the box-shadow inset line below; drop the inherited .grid
   border-bottom on th so it isn't doubled now that borders are separate. */
.ledger thead th{position:sticky;z-index:2;box-sizing:border-box;border-bottom:0}
/* Two frozen header rows: `groups` pinned at top:0 with a FIXED 28px height, `subs`
   pinned right below at top:28px. The height MUST equal subs' top, else a body row
   peeks through the seam when scrolling. */
.ledger tr.groups th{text-align:center;background:#eef2f7;color:#334155;
  font-size:12px;line-height:15px;height:28px;border-left:2px solid #fff;top:0;z-index:3;
  box-shadow:inset 0 -1px 0 var(--line)}
.ledger tr.subs th{background:#fafbfc;font-size:11px;text-transform:none;letter-spacing:0;
  top:28px;z-index:2;box-shadow:inset 0 -1px 0 var(--line)}
.ledger th.g,.ledger td.g{background:#f7fafc}
.ledger tr.subs th.g{background:#eef3f8}
.ledger tr.groups th.g{background:#e3ecf5}
.ledger td.pay{color:var(--brand-d);font-weight:600}
.ledger tr.opening{background:#fffdf3}
.ledger tr.opening td{font-style:italic}
.addpay{margin-top:22px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px 20px}
.addpay form{display:flex;gap:14px;align-items:flex-end;flex-wrap:wrap}
.addpay select{padding:8px 12px;border:1px solid var(--line);border-radius:8px;color:var(--ink);background:#fff}
.addpay label{display:flex;flex-direction:column;gap:4px;color:var(--muted);font-size:12px}
.addpay input{padding:8px 12px;border:1px solid var(--line);border-radius:8px;color:var(--ink)}
.flash{padding:10px 14px;border-radius:8px;margin-bottom:14px}
.flash.ok{background:#e7f6ec;color:var(--ok);border:1px solid #bfe6cc}
.flash.err{background:#fdeceb;color:var(--err);border:1px solid #f5c6c2}
/* user / logout */
.user{display:flex;align-items:center;gap:10px;white-space:nowrap}
.user form{margin:0}
/* main nav */
.mainnav{display:flex;gap:6px;white-space:nowrap}
.mainnav a{padding:7px 14px;border-radius:8px;color:var(--muted);font-weight:600}
.mainnav a:hover{background:#f0f3f7;text-decoration:none}
.mainnav a.active{background:var(--brand);color:#fff}
/* dashboard */
.kpis{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:14px;margin-bottom:20px}
.kpi{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 18px;display:flex;flex-direction:column;gap:2px}
.kpi span{color:var(--muted);font-size:12px}
.kpi b{font-size:24px;color:var(--ink);font-variant-numeric:tabular-nums}
.kpi small{color:var(--muted);font-size:11px}
.kpi.accent{background:#eef4ff;border-color:#cfe0ff}.kpi.accent b{color:var(--brand-d)}
.kpi.ok{background:#e9f7ee;border-color:#c5e8d1}.kpi.ok b{color:var(--ok)}
.kpi.warn{background:#fdf1e7;border-color:#f6d9bf}.kpi.warn b{color:#b3600f}
.dash2col{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.panel h3{margin:0 0 12px}
.bar{background:#eef2f7;border-radius:6px;height:18px;min-width:150px;overflow:hidden}
.bar span{display:flex;align-items:center;justify-content:flex-end;height:100%;
  background:var(--brand);border-radius:6px;color:#fff;font-size:11px;font-variant-numeric:tabular-nums;
  padding:0 7px;box-sizing:border-box;white-space:nowrap}
@media (max-width:900px){.dash2col{grid-template-columns:1fr}}
/* login */
.login-body{display:flex;min-height:100vh;align-items:center;justify-content:center;margin:0}
.login-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:28px 30px;width:340px;box-shadow:0 8px 30px rgba(20,40,80,.08)}
.login-card h1{margin:0 0 4px;font-size:20px}
.login-card form{display:flex;flex-direction:column;gap:14px;margin-top:16px}
.login-card label{display:flex;flex-direction:column;gap:6px;color:var(--muted);font-size:12px}
.login-card input{padding:10px 12px;border:1px solid var(--line);border-radius:8px;color:var(--ink);font-size:14px}
.login-card button{padding:10px 14px;font-size:15px}