:root {
  --bg: #0f1220;
  --surface: #1a1f36;
  --surface-2: #232a48;
  --border: #2e3760;
  --text: #e8ebf5;
  --muted: #9aa3c4;
  --primary: #5b8cff;
  --primary-2: #3f6fe0;
  --success: #2ecc71;
  --danger: #ff5a6a;
  --warning: #ffb020;
  --radius: 14px;
  --shadow: 0 8px 30px rgba(0,0,0,.35);
}

/* Member side: light (white) theme with Kasikorn-green accents, so it looks
   clearly distinct from the dark-blue admin side. Applied via
   <body class="theme-member"> — overrides the whole palette plus a few
   spots that hard-code dark colors (nav, flash). */
.theme-member {
  --bg: #f4f7f5;
  --surface: #ffffff;
  --surface-2: #eef3ef;
  --border: #d8e2db;
  --text: #12211a;
  --muted: #5f6f66;
  --primary: #00a950;
  --primary-2: #00893f;
  --shadow: 0 6px 22px rgba(18,40,28,.08);
  background: radial-gradient(1000px 500px at 80% -10%, #d9f2e2 0%, #f4f7f5 55%);
  color: var(--text);
}
.theme-member .nav { background: rgba(255,255,255,.85); }
.theme-member a { color: var(--primary-2); }
.theme-member .flash.error { color: #b3261e; }
.theme-member .flash.success { color: #0a7a3d; }

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Sarabun", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, #1c2444 0%, var(--bg) 55%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.55;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.nav {
  display: flex; align-items: center; gap: 18px;
  padding: 14px 20px; background: rgba(20,25,50,.7);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.nav .brand { font-weight: 800; font-size: 18px; letter-spacing: .3px; }
.nav .brand span { color: var(--primary); }
.nav .spacer { flex: 1; }
.nav a { color: var(--muted); font-size: 14px; }
.nav a.active, .nav a:hover { color: var(--text); }
.nav form { display: inline; }

.container { max-width: 960px; margin: 0 auto; padding: 24px 20px 60px; }
.narrow { max-width: 460px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  margin-bottom: 18px;
}
.card h1, .card h2 { margin-top: 0; }

h1 { font-size: 24px; }
h2 { font-size: 19px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.center { text-align: center; }

label { display: block; font-size: 14px; margin: 14px 0 6px; color: var(--muted); }
input, select {
  width: 100%; padding: 12px 14px; font-size: 15px;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 10px; color: var(--text); outline: none;
}
input:focus, select:focus { border-color: var(--primary); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 18px; font-size: 15px; font-weight: 600; cursor: pointer;
  background: var(--primary); color: #fff; border: none; border-radius: 10px;
  transition: background .15s ease; text-decoration: none;
}
.btn:hover { background: var(--primary-2); text-decoration: none; }
.btn.block { width: 100%; }
.btn.ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn.ghost:hover { background: var(--surface-2); }
.btn.danger { background: var(--danger); }
.btn.small { padding: 7px 12px; font-size: 13px; }

.balance {
  font-size: 40px; font-weight: 800; letter-spacing: .5px;
}
.balance .cur { font-size: 18px; color: var(--muted); font-weight: 600; margin-right: 6px; }

.grid { display: grid; gap: 14px; }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 640px) {
  .grid.cols-3, .grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
}

.stat { background: var(--surface-2); border: 1px solid var(--border); border-radius: 12px; padding: 14px; }
.stat .k { color: var(--muted); font-size: 13px; }
.stat .v { font-size: 22px; font-weight: 700; margin-top: 4px; }

.preset-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 8px 0 4px; }
.preset {
  padding: 14px; text-align: center; font-weight: 700; cursor: pointer;
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px;
}
.preset:hover, .preset.active { border-color: var(--primary); color: var(--primary); }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 13px; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.table-wrap { overflow-x: auto; }

.badge { display: inline-block; padding: 3px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.pending { background: rgba(255,176,32,.15); color: var(--warning); }
.badge.matched { background: rgba(46,204,113,.15); color: var(--success); }
.badge.expired, .badge.cancelled, .badge.unmatched, .badge.error { background: rgba(255,90,106,.15); color: var(--danger); }
.badge.ignored, .badge.duplicate { background: rgba(154,163,196,.15); color: var(--muted); }
.badge.on { background: rgba(46,204,113,.15); color: var(--success); }
.badge.off { background: rgba(154,163,196,.15); color: var(--muted); }

.flash { padding: 12px 14px; border-radius: 10px; margin-bottom: 12px; font-size: 14px; }
.flash.error { background: rgba(255,90,106,.12); border: 1px solid rgba(255,90,106,.4); color: #ffb3bb; }
.flash.success { background: rgba(46,204,113,.12); border: 1px solid rgba(46,204,113,.4); color: #a7f0c6; }

.qr-box { text-align: center; }
.qr-box img { width: 300px; max-width: 100%; background: #fff; padding: 12px; border-radius: 12px; }
.amount-big { font-size: 34px; font-weight: 800; margin: 6px 0; }
.countdown { font-variant-numeric: tabular-nums; font-weight: 700; }

.rowlink { display:flex; justify-content: space-between; align-items:center;
  padding: 12px 0; border-bottom: 1px solid var(--border); }
.rowlink:last-child { border-bottom: none; }

.hint { font-size: 13px; color: var(--muted); background: var(--surface-2);
  border: 1px dashed var(--border); border-radius: 10px; padding: 10px 12px; }
.warnbox { font-size: 13px; text-align: left; margin-top: 14px;
  background: rgba(255,176,32,.10); border: 1px solid rgba(255,176,32,.45);
  border-radius: 10px; padding: 12px 14px; color: var(--text); }
.warnbox ul { margin: 8px 0 0; padding-left: 18px; }
.warnbox li { margin: 4px 0; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
