:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --ink: #14161a;
  --muted: #6b7280;
  --line: #e4e7ec;
  --brand: #16a06a;
  --brand-dark: #0f7d52;
  --danger: #d64545;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16,24,40,.05), 0 6px 20px rgba(16,24,40,.05);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--brand-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 24px; margin: 0; }
h2 { font-size: 18px; margin: 0; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }
.r { text-align: right; }
.nowrap { white-space: nowrap; }
.strong { font-weight: 650; }

/* ---------- top bar ---------- */
.topbar { background: var(--panel); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.topbar .wrap { display: flex; align-items: center; gap: 24px; height: 60px; }
.brand { font-weight: 700; color: var(--ink); display: flex; align-items: center; gap: 8px; }
.brand:hover { text-decoration: none; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--brand); display: inline-block; }
.topbar nav { display: flex; gap: 4px; margin-right: auto; flex-wrap: wrap; }
.topbar nav a { padding: 7px 12px; border-radius: 8px; color: var(--muted); font-weight: 550; }
.topbar nav a:hover { background: #f0f2f5; text-decoration: none; }
.topbar nav a.active { background: #e8f6ef; color: var(--brand-dark); }
.who { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.avatar {
  width: 28px; height: 28px; border-radius: 50%; background: var(--brand); color: #fff;
  display: grid; place-items: center; font-weight: 700; font-size: 13px;
}
.logout { color: var(--muted); }

.page { padding-top: 24px; padding-bottom: 60px; }
.foot { color: var(--muted); font-size: 13px; padding-bottom: 30px; }

/* ---------- headings / flash ---------- */
.page-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.page-head p { margin: 4px 0 0; font-size: 14px; }
.section-head { display: flex; justify-content: space-between; align-items: baseline; margin: 28px 0 12px; }
.flash { padding: 11px 14px; border-radius: 10px; margin-bottom: 16px; font-size: 14px; }
.flash.ok { background: #e8f6ef; color: #0f7d52; border: 1px solid #bfe6d4; }
.flash.err { background: #fdecec; color: #a12626; border: 1px solid #f5c6c6; }
.empty { background: var(--panel); border: 1px dashed var(--line); border-radius: var(--radius); padding: 28px; text-align: center; color: var(--muted); }

/* ---------- buttons ---------- */
.btn {
  display: inline-block; padding: 9px 15px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--panel); color: var(--ink); font: inherit; font-weight: 600; cursor: pointer;
}
.btn:hover { text-decoration: none; background: #f7f8fa; }
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn.primary:hover { background: var(--brand-dark); }
.btn.ghost { background: transparent; }
.btn.block { width: 100%; }
.btn.danger { color: var(--danger); border-color: #f0c4c4; }
.btn.danger:hover { background: #fdecec; }
.link { background: none; border: 0; padding: 0; font: inherit; color: var(--brand-dark); cursor: pointer; }
.link:hover { text-decoration: underline; }
.link.danger { color: var(--danger); }
.inline { display: inline; margin-left: 10px; }
.head-actions { display: flex; gap: 8px; align-items: center; }
.head-actions .inline { margin-left: 0; }

/* ---------- cards ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.card .label, .label { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 650; }
.card .value { display: block; font-size: 26px; margin: 6px 0 4px; letter-spacing: -.02em; }
.card .meta { font-size: 12.5px; color: var(--muted); }
.card.total { background: linear-gradient(140deg, #16a06a, #0f7d52); border-color: transparent; color: #fff; }
.card.total .label, .card.total .meta { color: rgba(255,255,255,.85); }
.bar { height: 5px; background: #eef0f3; border-radius: 4px; margin-top: 10px; overflow: hidden; }
.bar span { display: block; height: 100%; background: var(--brand); border-radius: 4px; }

/* ---------- balance ---------- */
.settle-box {
  margin: 18px 0; padding: 20px; background: var(--panel); border: 1px solid var(--line);
  border-left: 4px solid var(--brand); border-radius: var(--radius); box-shadow: var(--shadow);
  display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap;
}
.settle-box.clear { border-left-color: #c9ced6; }
.settle-box h2 { margin: 6px 0 4px; font-size: 20px; }
.settle-box .amt { color: var(--brand-dark); }
.settle-box p { margin: 0; font-size: 13.5px; }

.balances { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; }
.mini { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; }
.mini-name { font-weight: 650; }
.mini-val { display: block; margin-top: 2px; font-size: 15px; }
.mini-val.pos { color: var(--brand-dark); }
.mini-val.neg { color: var(--danger); }
.mini-meta { display: block; font-size: 12.5px; color: var(--muted); margin-top: 2px; }

/* ---------- tables ---------- */
.table-wrap { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow-x: auto; box-shadow: var(--shadow); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); background: #fafbfc; }
tbody tr:last-child td { border-bottom: 0; }
tfoot td { background: #fafbfc; font-size: 13.5px; border-bottom: 0; }
.pill { display: inline-block; padding: 2px 9px; border-radius: 999px; background: #eef1f5; font-size: 12.5px; font-weight: 600; }
.sub-note { font-size: 12.5px; color: var(--muted); margin-top: 2px; }
.clip { margin-left: 4px; }

/* ---------- forms ---------- */
.form-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); max-width: 640px; }
label { display: block; margin-bottom: 16px; font-size: 13.5px; font-weight: 600; }
input[type=text], input[type=password], input[type=number], input[type=date], select, textarea, input[type=file] {
  display: block; width: 100%; margin-top: 6px; padding: 10px 12px; border: 1px solid var(--line);
  border-radius: 10px; font: inherit; background: #fff; color: var(--ink);
}
input:focus, select:focus, textarea:focus { outline: 2px solid #bfe6d4; border-color: var(--brand); }
textarea { resize: vertical; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.req { color: var(--danger); font-weight: 700; }
.opt { color: var(--muted); font-weight: 500; }
.actions { display: flex; gap: 10px; align-items: center; margin-top: 6px; }
.created-by { background: #f6f8fa; border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; margin-bottom: 16px; font-size: 13.5px; color: var(--muted); }
.current-receipt { font-size: 13.5px; margin-bottom: 16px; }
.check { display: inline-block; margin: 0 0 0 12px; font-weight: 500; }
.check input { width: auto; display: inline; margin: 0 4px 0 0; }

.filters { display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; margin-bottom: 18px; }
.filters label { margin: 0; }
.filters input, .filters select { margin-top: 4px; }
.presets { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { padding: 6px 11px; border-radius: 999px; background: #eef1f5; font-size: 13px; color: var(--muted); }
.chip:hover { text-decoration: none; background: #e2e6ec; }

/* ---------- detail ---------- */
.detail { display: grid; grid-template-columns: 1.6fr 1fr; gap: 16px; }
.detail-main, .detail-side { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
dl { margin: 0; display: grid; grid-template-columns: 130px 1fr; gap: 10px 14px; }
dt { color: var(--muted); font-size: 13.5px; }
dd { margin: 0; }
dd.big { font-size: 22px; font-weight: 650; }
.receipt { width: 100%; border-radius: 10px; border: 1px solid var(--line); margin-top: 10px; }

/* ---------- login ---------- */
.login-body { display: grid; place-items: center; min-height: 100vh; background: linear-gradient(150deg, #0f7d52, #14161a); }
.login-card { background: #fff; padding: 30px; border-radius: 18px; width: 100%; max-width: 380px; box-shadow: 0 20px 60px rgba(0,0,0,.3); }
.login-card h1 { display: flex; align-items: center; gap: 9px; font-size: 21px; }
.login-card .sub { margin: 6px 0 20px; color: var(--muted); font-size: 14px; }
.login-card .hint { margin: 14px 0 0; font-size: 12.5px; color: var(--muted); text-align: center; }

@media (max-width: 720px) {
  .row, .detail { grid-template-columns: 1fr; }
  .topbar .wrap { height: auto; padding-top: 10px; padding-bottom: 10px; flex-wrap: wrap; }
  dl { grid-template-columns: 1fr; gap: 2px 0; }
  dt { margin-top: 10px; }
}

@media print {
  .topbar, .filters, .page-head .btn, .foot { display: none !important; }
  body { background: #fff; }
  .card, .table-wrap, .settle-box { box-shadow: none; }
}