/* หน้าตาของระบบ — ไม่มี framework ไม่มี build step ตามกฎกลาง
   ออกแบบให้ใช้บนมือถือก่อน เพราะคนใช้จริงเกือบทั้งหมดเปิดจากมือถือ           */

:root {
  --bg: #f4f5f7;
  --card: #fff;
  --line: #e3e6ea;
  --txt: #1c2430;
  --dim: #6b7684;
  --brand: #1f5fa8;
  --brand-d: #16497f;
  --ok: #147a4a;
  --warn: #a86b00;
  --bad: #c0362c;
  --in: #147a4a;
  --out: #c0362c;
  --r: 10px;
  --sh: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .1);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Noto Sans Thai', 'Sarabun', system-ui, -apple-system, 'Segoe UI', sans-serif;
  background: var(--bg); color: var(--txt); font-size: 16px; line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}
h1, h2, h3 { margin: 0 0 .5rem; line-height: 1.3; }
h1 { font-size: 1.35rem; }
h2 { font-size: 1.1rem; }
h3 { font-size: 1rem; }
a { color: var(--brand); }

/* ---------- โครงหน้า ---------- */
header.top {
  background: var(--brand); color: #fff; padding: .6rem .9rem;
  display: flex; align-items: center; gap: .6rem; position: sticky; top: 0; z-index: 30;
}
header.top .brand { font-weight: 700; font-size: 1.05rem; }
header.top .sp { flex: 1; }
header.top .who { font-size: .85rem; opacity: .9; }
header.top button { background: rgba(255,255,255,.16); color: #fff; border: 0; }

nav.tabs {
  display: flex; gap: .25rem; overflow-x: auto; background: #fff;
  border-bottom: 1px solid var(--line); padding: 0 .4rem; position: sticky; top: 45px; z-index: 29;
  scrollbar-width: none;
}
nav.tabs::-webkit-scrollbar { display: none; }
nav.tabs a {
  padding: .7rem .8rem; white-space: nowrap; text-decoration: none; color: var(--dim);
  border-bottom: 3px solid transparent; font-size: .95rem;
}
nav.tabs a.on { color: var(--brand); border-bottom-color: var(--brand); font-weight: 600; }

main { padding: .8rem; max-width: 1200px; margin: 0 auto; }
.wide { max-width: 100%; }

/* ---------- กล่อง ---------- */
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  box-shadow: var(--sh); padding: .9rem; margin-bottom: .8rem;
}
.card > h2:first-child, .card > h3:first-child { margin-top: 0; }
.grid { display: grid; gap: .8rem; }
.g2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.g3 { grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }
.g4 { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.row { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }
.row.tight { gap: .35rem; }
.sp { flex: 1; }

/* ---------- ตัวเลขสรุป ---------- */
.stat { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: .7rem .8rem; }
.stat .k { font-size: .8rem; color: var(--dim); }
.stat .v { font-size: 1.4rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat .s { font-size: .78rem; color: var(--dim); }
.v.pos { color: var(--ok); } .v.neg { color: var(--bad); }

/* ---------- ปุ่ม ---------- */
button, .btn {
  font: inherit; font-size: .95rem; padding: .55rem .9rem; border-radius: 8px;
  border: 1px solid var(--line); background: #fff; color: var(--txt); cursor: pointer;
  min-height: 42px; display: inline-flex; align-items: center; justify-content: center; gap: .35rem;
  text-decoration: none;
}
button:hover, .btn:hover { background: #f2f4f7; }
button:disabled { opacity: .5; cursor: not-allowed; }
button.pri, .btn.pri { background: var(--brand); border-color: var(--brand); color: #fff; }
button.pri:hover { background: var(--brand-d); }
button.ok { background: var(--ok); border-color: var(--ok); color: #fff; }
button.bad { background: var(--bad); border-color: var(--bad); color: #fff; }
button.sm { min-height: 32px; padding: .25rem .55rem; font-size: .85rem; }
button.link { border: 0; background: none; color: var(--brand); padding: .2rem; min-height: 0; }

/* ---------- ฟอร์ม ---------- */
label { display: block; font-size: .85rem; color: var(--dim); margin-bottom: .15rem; }
input, select, textarea {
  font: inherit; font-size: 1rem; width: 100%; padding: .5rem .6rem;
  border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--txt);
  min-height: 42px;
}
input[type=checkbox] { width: 22px; height: 22px; min-height: 0; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--brand); outline-offset: -1px; }
input.num, td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.field { margin-bottom: .6rem; }
fieldset { border: 1px solid var(--line); border-radius: var(--r); padding: .7rem; margin: 0 0 .8rem; }
legend { font-size: .85rem; color: var(--dim); padding: 0 .3rem; }

/* ---------- ตาราง ---------- */
.tw { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { border-collapse: collapse; width: 100%; font-size: .9rem; }
th, td { padding: .45rem .5rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { font-weight: 600; color: var(--dim); font-size: .82rem; white-space: nowrap;
     position: sticky; top: 0; background: #fff; z-index: 1; }
tbody tr:hover { background: #fafbfc; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
tr.sub td { background: #fbfcfd; font-size: .85rem; color: var(--dim); }
tr.today td { background: #fff9e6; }
tr.neg td { background: #fdeceb; }

/* ---------- ป้าย ---------- */
.tag {
  display: inline-block; font-size: .75rem; padding: .1rem .45rem; border-radius: 999px;
  background: #eef1f5; color: var(--dim); white-space: nowrap;
}
.tag.ok { background: #e3f5ec; color: var(--ok); }
.tag.warn { background: #fdf1dd; color: var(--warn); }
.tag.bad { background: #fdeceb; color: var(--bad); }
.tag.info { background: #e7f0fb; color: var(--brand); }

.msg { padding: .6rem .8rem; border-radius: 8px; margin-bottom: .7rem; font-size: .92rem; }
.msg.err { background: #fdeceb; color: var(--bad); border: 1px solid #f5c9c5; }
.msg.ok { background: #e3f5ec; color: var(--ok); border: 1px solid #bfe6d3; }
.msg.warn { background: #fdf1dd; color: var(--warn); border: 1px solid #f2ddb4; }
.dim { color: var(--dim); }
.sml { font-size: .82rem; }
.mono { font-variant-numeric: tabular-nums; }
.pos { color: var(--ok); } .neg { color: var(--bad); }
.nowrap { white-space: nowrap; }
.hide { display: none !important; }

/* ---------- แถบวงเงิน ---------- */
.bar { height: 8px; background: #eef1f5; border-radius: 99px; overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--brand); }
.bar.warn > i { background: var(--warn); }
.bar.bad > i { background: var(--bad); }

/* ---------- กราฟเส้นเงินคงเหลือ ---------- */
.chart { width: 100%; height: 180px; display: block; }

/* ---------- หน้าต่างซ้อน ---------- */
.modal {
  position: fixed; inset: 0; background: rgba(16,24,40,.45); z-index: 60;
  display: flex; align-items: flex-end; justify-content: center; padding: 0;
}
.modal > .box {
  background: #fff; border-radius: 14px 14px 0 0; width: 100%; max-width: 640px;
  max-height: 92vh; overflow: auto; padding: 1rem;
}
@media (min-width: 640px) {
  .modal { align-items: center; padding: 1rem; }
  .modal > .box { border-radius: 14px; }
}

/* ---------- หน้าเข้าสู่ระบบ ---------- */
.login { max-width: 360px; margin: 12vh auto; }
.login .card { padding: 1.2rem; }

/* ---------- กำลังโหลด ---------- */
.load { text-align: center; color: var(--dim); padding: 2rem 0; }