:root{
  --paper:#F7F3E8;
  --paper-raised:#FFFFFF;
  --ink:#211E18;
  --ink-soft:#5B564A;
  --line:#DED4B9;
  --line-soft:#EAE2CC;
  --green:#1F6F4A;
  --green-deep:#155235;
  --green-pale:#E4F1EA;
  --wheat:#B8862E;
  --wheat-pale:#F3E8D2;
  --red:#A63C31;
  --red-pale:#F6E5E2;
  --shadow: 0 1px 2px rgba(33,30,24,0.06), 0 6px 16px rgba(33,30,24,0.05);
  --radius: 10px;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0; overflow-x:hidden;}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:'Inter',sans-serif;
  font-size:14px;
  line-height:1.5;
  min-height:100vh;
}

/* ===== App shell ===== */
.app{ display:grid; grid-template-columns:240px 1fr; min-height:100vh; }
.sidebar{
  background:var(--paper-raised);
  border-right:1px solid var(--line);
  padding:26px 18px;
  position:relative;
  display:flex; flex-direction:column; gap:28px;
}
.sidebar::after{
  content:""; position:absolute; top:0; right:-1px; bottom:0; width:6px;
  background-image: repeating-linear-gradient(to bottom, var(--line) 0 3px, transparent 3px 9px);
}
.brand{ display:flex; flex-direction:column; gap:2px; padding:0 4px; }
.brand .mark{ font-family:'Fraunces',serif; font-weight:600; font-size:19px; letter-spacing:-0.01em; color:var(--green-deep); }
.brand .sub{ font-size:11.5px; color:var(--ink-soft); letter-spacing:.02em; }

nav.mainnav, .mainnav{ display:flex; flex-direction:column; gap:2px; }
.mainnav a{
  display:flex; align-items:center; gap:10px; padding:9px 12px; border-radius:8px;
  font-size:13.5px; font-weight:500; color:var(--ink-soft); text-decoration:none;
}
.mainnav a .num{ font-family:'IBM Plex Mono',monospace; font-size:11px; color:var(--line); width:16px; }
.mainnav a:hover{ background:var(--paper); color:var(--ink); }
.mainnav a.active{ background:var(--green-pale); color:var(--green-deep); font-weight:600; }
.mainnav a.active .num{ color:var(--green); }

.sidebar-foot{ margin-top:auto; padding:12px; border-top:1px solid var(--line-soft); font-size:11.5px; color:var(--ink-soft); line-height:1.7; }
.sidebar-foot a{ color:var(--green-deep); }

.main{ padding:32px 40px 80px; width:100%; min-width:0; }

.view-head{ display:flex; justify-content:space-between; align-items:flex-end; margin-bottom:22px; gap:20px; flex-wrap:wrap; }
.view-head h1{ font-family:'Fraunces',serif; font-weight:600; font-size:26px; margin:0 0 4px; letter-spacing:-0.01em; }
.view-head p{ margin:0; color:var(--ink-soft); font-size:13px; max-width:520px; }
.eyebrow{ font-family:'IBM Plex Mono',monospace; font-size:11px; letter-spacing:.08em; text-transform:uppercase; color:var(--wheat); margin-bottom:6px; display:block; }

.flash{ padding:11px 16px; border-radius:8px; font-size:13px; margin-bottom:18px; font-weight:500; }
.flash-ok{ background:var(--green-pale); color:var(--green-deep); }
.flash-error{ background:var(--red-pale); color:var(--red); }

/* ===== buttons ===== */
.btn{
  display:inline-flex; align-items:center; gap:6px; cursor:pointer;
  font-family:'Inter',sans-serif; font-weight:600; font-size:13px;
  padding:9px 16px; border-radius:8px; border:1px solid transparent;
  white-space:nowrap; text-decoration:none; background:none;
}
.btn-primary{ background:var(--green); color:#fff; }
.btn-primary:hover{ background:var(--green-deep); }
.btn-ghost{ background:transparent; color:var(--ink); border-color:var(--line); }
.btn-ghost:hover{ background:var(--paper); }
.btn-danger{ background:transparent; color:var(--red); }
.btn-danger:hover{ background:var(--red-pale); }
.btn-sm{ padding:6px 11px; font-size:12px; border-radius:7px; }
.btn:disabled{ opacity:.45; cursor:not-allowed; }

/* ===== cards / tables ===== */
.card{ background:var(--paper-raised); border:1px solid var(--line); border-radius:var(--radius); box-shadow:var(--shadow); }
.card + .card{ margin-top:18px; }
.card-head{ display:flex; justify-content:space-between; align-items:center; padding:16px 18px; border-bottom:1px solid var(--line-soft); flex-wrap:wrap; gap:10px; }
.card-head h3{ margin:0; font-size:14.5px; font-weight:600; }
.card-body{ padding:18px; }
.card-body.tight{ padding:0; overflow-x:auto; -webkit-overflow-scrolling:touch; }

.stat-row{ display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr)); gap:14px; margin-bottom:20px; }
.stat{ background:var(--paper-raised); border:1px solid var(--line); border-radius:var(--radius); padding:16px 18px; box-shadow:var(--shadow); }
.stat .label{ font-size:11.5px; color:var(--ink-soft); text-transform:uppercase; letter-spacing:.05em; margin-bottom:8px; }
.stat .value{ font-family:'IBM Plex Mono',monospace; font-size:22px; font-weight:600; white-space:normal; overflow-wrap:break-word; }
.stat .value.green{ color:var(--green-deep); }
.stat .value.red{ color:var(--red); }
.stat .sub{ font-size:11.5px; color:var(--ink-soft); margin-top:4px; }

table.ledger{ width:100%; border-collapse:collapse; font-size:13px; }
table.ledger thead th{
  text-align:left; font-size:11px; text-transform:uppercase; letter-spacing:.04em; color:var(--ink-soft);
  font-weight:600; padding:10px 14px; border-bottom:1px solid var(--line); background:var(--paper); white-space:nowrap;
}
table.ledger tbody td{ padding:9px 14px; border-bottom:1px solid var(--line-soft); font-family:'IBM Plex Mono',monospace; font-variant-numeric:tabular-nums; white-space:nowrap; }
table.ledger tbody td.text{ font-family:'Inter',sans-serif; white-space:normal; }
table.ledger tbody tr:last-child td{ border-bottom:none; }
table.ledger tbody tr:hover{ background:var(--paper); }
table.ledger tfoot td{ padding:10px 14px; font-family:'IBM Plex Mono',monospace; font-weight:700; background:var(--green-pale); color:var(--green-deep); border-top:2px solid var(--green); }
.num{ text-align:right; font-family:'IBM Plex Mono',monospace; font-variant-numeric:tabular-nums; }
.muted{ color:var(--ink-soft); }
.empty-row td{ text-align:center; padding:34px 14px; color:var(--ink-soft); font-family:'Inter',sans-serif; }

.pill{ display:inline-flex; align-items:center; gap:5px; font-size:11px; font-weight:600; padding:3px 9px; border-radius:99px; }
.pill-paid{ background:var(--green-pale); color:var(--green-deep); }
.pill-unpaid{ background:var(--red-pale); color:var(--red); }

input[type=text], input[type=number], input[type=date], input[type=password], select{
  font-family:'Inter',sans-serif; font-size:13px; padding:8px 10px; border:1px solid var(--line);
  border-radius:7px; background:#fff; color:var(--ink); width:100%;
}
input:focus, select:focus{ outline:2px solid var(--green); outline-offset:1px; }
label.field{ display:flex; flex-direction:column; gap:5px; font-size:12px; color:var(--ink-soft); font-weight:500; }
.field-row{ display:flex; gap:12px; flex-wrap:wrap; margin-bottom:14px; }
.field-row > *{ flex:1; min-width:130px; }
form.inline{ display:inline; }

.preset-row{ display:flex; gap:8px; flex-wrap:wrap; margin-bottom:14px; }
.preset-btn{ font-size:12px; font-weight:600; padding:7px 12px; border:1px solid var(--line); border-radius:7px; color:var(--ink-soft); text-decoration:none; background:#fff; }
.preset-btn:hover{ background:var(--paper); }
.preset-btn.active{ background:var(--green); border-color:var(--green); color:#fff; }

.customer-picker{ display:flex; align-items:center; gap:10px; margin-bottom:18px; flex-wrap:wrap; }
.customer-picker select{ max-width:280px; }

.empty-state{ text-align:center; padding:50px 20px; color:var(--ink-soft); }
.empty-state .glyph{ font-size:30px; margin-bottom:10px; opacity:.5; }
.empty-state h4{ margin:0 0 6px; color:var(--ink); font-family:'Fraunces',serif; font-size:18px; }

/* ===== login page ===== */
.login-wrap{ min-height:100vh; display:flex; align-items:center; justify-content:center; padding:20px; }
.login-card{ background:var(--paper-raised); border:1px solid var(--line); border-radius:14px; box-shadow:var(--shadow); padding:34px 32px; width:100%; max-width:380px; }
.login-card .mark{ font-family:'Fraunces',serif; font-weight:600; font-size:22px; color:var(--green-deep); display:block; margin-bottom:2px; }
.login-card .sub{ font-size:12.5px; color:var(--ink-soft); margin-bottom:22px; display:block; }
.login-card h2{ font-family:'Fraunces',serif; font-size:17px; margin:0 0 16px; }
.login-card .field{ margin-bottom:14px; }
.login-card .btn{ width:100%; justify-content:center; margin-top:6px; }
.login-note{ font-size:11.5px; color:var(--ink-soft); margin-top:16px; text-align:center; }

/* ===== receipt (A4-sized for printing) ===== */
.receipt-wrap{ display:flex; gap:28px; align-items:flex-start; flex-wrap:wrap; }
.receipt-stage{ background:#EFE9DA; border-radius:14px; padding:26px; flex:1; min-width:340px; display:flex; justify-content:center; }
.receipt-frame{ width:420px; height:594px; overflow:hidden; position:relative; background:#fff; box-shadow:0 4px 18px rgba(0,0,0,.18); flex-shrink:0; }
#receipt{
  background:#fff; width:794px; min-height:1123px; box-sizing:border-box; padding:54px 56px;
  position:absolute; top:0; left:0; transform:scale(0.529); transform-origin:top left;
  font-family:'Inter',sans-serif; color:#111;
}
@media (max-width: 500px){
  .receipt-frame{ width:280px; height:396px; }
  #receipt{ transform:scale(0.3526); }
}
#receipt img.letterhead{ width:100%; display:block; margin-bottom:14px; }
.ref-row{ display:flex; justify-content:space-between; align-items:center; margin-bottom:26px; font-size:14px; direction:rtl; gap:20px; }
.ref-row .ref-field{ display:flex; align-items:center; gap:8px; }
.ref-row .ref-label{ font-weight:700; white-space:nowrap; }
.ref-row input{ border:none; border-bottom:1px solid #999; border-radius:0; text-align:center; direction:ltr; font-family:'Inter',sans-serif; padding:2px 4px; width:130px; background:transparent; }
#receipt .rtitle{ text-align:center; font-family:'Fraunces',serif; font-weight:700; font-size:21px; margin:0 0 4px; }
#receipt .rsub{ text-align:center; font-weight:600; font-size:13.5px; margin:0 0 16px; }
table.rtable{ width:100%; border-collapse:collapse; font-size:12px; }
table.rtable th, table.rtable td{ border:1px solid #333; padding:6px 8px; text-align:center; }
table.rtable th{ background:#fff; font-weight:700; }
table.rtable tfoot td{ font-weight:700; }
.rsummary .rrow{ display:flex; justify-content:space-between; background:#1F6F4A; color:#fff; padding:7px 12px; font-weight:700; font-size:13px; border:1px solid #16512f; }
.rsummary .rrow + .rrow{ border-top:1px solid rgba(255,255,255,.35); }
.receipt-side{ width:260px; }
.receipt-side .card-body label.field{ margin-bottom:12px; }

@media print{
  @page{ size:A4; margin:0; }
  body *{ visibility:hidden; }
  #receipt, #receipt *{ visibility:visible; }
  #receipt{ position:absolute !important; top:0 !important; left:0 !important; transform:none !important; box-shadow:none !important; width:210mm !important; min-height:297mm !important; }
}

@media (max-width: 880px){
  .app{ grid-template-columns:1fr; }
  .sidebar{ flex-direction:column; gap:10px; padding:14px 16px; border-right:none; border-bottom:1px solid var(--line); }
  .sidebar::after{ display:none; }
  .brand{ padding:0; }
  nav.mainnav, .mainnav{ flex-direction:row; flex-wrap:wrap; gap:6px; }
  .mainnav a{ padding:7px 11px; border:1px solid var(--line-soft); }
  .mainnav a.active{ border-color:var(--green); }
  .mainnav a .num{ display:none; }
  .sidebar-foot{ margin-top:0; padding:10px 0 0; border-top:1px solid var(--line-soft); }
  .main{ padding:20px 16px 60px; }
  .view-head{ flex-direction:column; align-items:flex-start; }
  .stat-row{ grid-template-columns:repeat(auto-fit,minmax(210px,1fr)); }
  table.ledger thead th, table.ledger tbody td{ padding:8px 10px; font-size:12.5px; }
}

@media (max-width: 480px){
  .stat-row{ grid-template-columns:1fr; }
  .field-row{ flex-direction:column; }
  .field-row > *{ min-width:0; }
  .customer-picker, .customer-picker select{ max-width:none; }
}

/* ===== responsive stacked tables (mobile "card" mode) =====
   Add class="responsive-cards" to any table.ledger, and
   data-label="Column Name" to each <td>, to get this treatment
   below 700px: every row becomes its own bordered card with
   Label / Value pairs instead of a wide scrolling table. */
@media (max-width: 700px){
  table.ledger.responsive-cards{ border:none; }
  table.ledger.responsive-cards thead{ display:none; }
  table.ledger.responsive-cards tbody, table.ledger.responsive-cards tr, table.ledger.responsive-cards td{ display:block; width:100%; }
  table.ledger.responsive-cards tbody tr{
    border:1px solid var(--line); border-radius:9px; margin-bottom:10px; padding:4px 12px;
    background:var(--paper-raised); box-shadow:var(--shadow);
  }
  table.ledger.responsive-cards tbody tr.empty-row{ border:none; box-shadow:none; padding:0; }
  table.ledger.responsive-cards td{
    display:flex; justify-content:space-between; align-items:center; gap:14px;
    padding:9px 0; border-bottom:1px solid var(--line-soft); white-space:normal; text-align:right;
  }
  table.ledger.responsive-cards td:last-child{ border-bottom:none; }
  table.ledger.responsive-cards td:empty{ display:none; }
  table.ledger.responsive-cards td::before{
    content:attr(data-label); font-weight:600; color:var(--ink-soft); text-align:left;
    font-family:'Inter',sans-serif; text-transform:uppercase; font-size:10.5px; letter-spacing:.04em;
    flex-shrink:0;
  }
  table.ledger.responsive-cards td[data-label=""]::before,
  table.ledger.responsive-cards td:not([data-label])::before{ content:none; }
  table.ledger.responsive-cards tfoot, table.ledger.responsive-cards tfoot tr, table.ledger.responsive-cards tfoot td{ display:block; width:100%; }
  table.ledger.responsive-cards tfoot tr{ background:var(--green-pale); border-radius:9px; padding:4px 12px; margin-top:2px; }
  table.ledger.responsive-cards tfoot td{ border-bottom:1px solid rgba(255,255,255,.4); justify-content:space-between; }
  .card-body.tight.cards-mode{ padding:14px; overflow-x:visible; }
  .field-row{ flex-direction:column; display: grid;  grid-template-columns:repeat(auto-fit,minmax(210px,1fr)); }
  .field-row > *{ min-width:360px; }
}