:root{
  --paper:#F6F4EF;
  --card:#FFFFFF;
  --ink:#26312F;
  --ink-soft:#5B6663;
  --line:#E4E0D5;
  --teal:#2D6A64;
  --teal-deep:#1F4E4A;
  --teal-wash:#E4EEEC;
  --brick:#A8472B;
  --brick-wash:#F5E4DE;
  --sage:#6B8F71;
  --sage-wash:#E7EFE6;
  --amber:#B6812F;
  --amber-wash:#F6ECD9;
  --radius:10px;
  --serif: Georgia, "Iowan Old Style", "Palatino Linotype", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;background:var(--paper);color:var(--ink);font-family:var(--sans);}
body{padding-bottom:40px;}
h1,h2,h3{font-family:var(--serif);font-weight:600;margin:0;}
a{color:inherit;text-decoration:none;}
button, .btn{font-family:var(--sans);cursor:pointer;}
input,select,textarea{font-family:var(--sans);}

.topbar{
  display:flex;justify-content:space-between;align-items:center;
  padding:18px 16px 14px;border-bottom:1px solid var(--line);
  background:var(--card); position:sticky; top:0; z-index:20;
}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:34px;height:34px;border-radius:8px;background:var(--teal);
  color:white;display:flex;align-items:center;justify-content:center;
  font-size:18px;flex-shrink:0;
}
.brand h1{font-size:19px;color:var(--teal-deep);line-height:1.1;}
.brand .tagline{margin:2px 0 0;font-size:12px;color:var(--ink-soft);}

.user-chip{display:flex;align-items:center;gap:8px;}
.user-chip .who{text-align:right;line-height:1.2;}
.user-chip .who .nm{font-size:13px;font-weight:700;color:var(--ink);}
.user-chip .who .rl{font-size:11px;color:var(--ink-soft);text-transform:capitalize;}
.logout-btn{
  border:1px solid var(--line);background:var(--paper);color:var(--ink-soft);
  border-radius:8px;padding:6px 10px;font-size:12px;font-weight:600;display:inline-block;
}

.section-tabs{
  display:flex;gap:4px;overflow-x:auto;padding:10px 14px;
  background:var(--card);border-bottom:1px solid var(--line);
  position:sticky;top:69px;z-index:19;
}
.section-tabs::-webkit-scrollbar{display:none;}
.stab{
  border:1px solid var(--line);background:var(--paper);color:var(--ink-soft);
  padding:7px 13px;border-radius:8px;font-size:13px;white-space:nowrap;font-weight:500;
  display:inline-block;
}
.stab.active{background:var(--ink);color:white;border-color:var(--ink);}

main{padding:16px 14px 60px;max-width:720px;margin:0 auto;}

.flash{padding:10px 14px;border-radius:8px;font-size:13.5px;margin-bottom:14px;font-weight:500;}
.flash-success{background:var(--sage-wash);color:#3E5B43;}
.flash-error{background:var(--brick-wash);color:var(--brick);}

.cat-row{display:flex;gap:6px;overflow-x:auto;padding-bottom:10px;margin-bottom:14px;border-bottom:1px dashed var(--line);}
.cat-row::-webkit-scrollbar{display:none;}
.cat-pill{
  border:1px solid var(--line);background:var(--card);color:var(--ink-soft);
  padding:6px 12px;border-radius:999px;font-size:12.5px;white-space:nowrap;font-weight:500;display:inline-block;
}
.cat-pill.active{background:var(--teal); color:white;border-color:var(--teal);}
.cat-pill.add-cat{border-style:dashed;color:var(--teal-deep);background:transparent;}

.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:14px;margin-bottom:12px;
}
.card h3{font-size:16px;color:var(--ink);}
.item-row{
  display:flex;justify-content:space-between;align-items:center;gap:10px;
  padding:12px 0;border-bottom:1px solid var(--line);flex-wrap:wrap;
}
.item-row:last-child{border-bottom:none;}
.item-name{font-weight:600;font-size:14.5px;}
.item-meta{font-size:12px;color:var(--ink-soft);margin-top:2px;}
.qty-badge{
  font-size:13px;font-weight:700;padding:3px 9px;border-radius:6px;
  background:var(--sage-wash);color:var(--sage);white-space:nowrap;
}
.qty-badge.low{background:var(--brick-wash);color:var(--brick);}
.row-actions{display:flex;gap:6px;flex-shrink:0;align-items:center;}
.icon-btn{
  border:1px solid var(--line);background:var(--paper);border-radius:7px;
  width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;
}
.icon-btn.danger{color:var(--brick);}
.icon-btn.use{background:var(--teal);border-color:var(--teal);color:white;width:auto;padding:0 12px;font-size:12.5px;font-weight:600;height:30px;}

.empty{text-align:center;padding:36px 20px;color:var(--ink-soft);font-size:14px;}
.empty .big{font-size:28px;display:block;margin-bottom:8px;}

label{display:block;font-size:12.5px;color:var(--ink-soft);margin:10px 0 4px;font-weight:600;}
label:first-child{margin-top:0;}
input[type=text], input[type=number], input[type=date], input[type=password], select, textarea{
  width:100%;padding:9px 10px;border:1px solid var(--line);border-radius:8px;
  font-size:14px;background:var(--paper);color:var(--ink);
}
input:focus, select:focus, textarea:focus{outline:2px solid var(--teal);outline-offset:0;}

.btn{
  border:none;border-radius:8px;padding:11px 16px;font-size:14px;font-weight:600;
  background:var(--teal);color:white;width:100%;margin-top:12px;display:block;text-align:center;
}
.btn:active{background:var(--teal-deep);}
.btn.secondary{background:var(--ink);}
.btn.danger-btn{background:var(--brick);}
.btn.ghost{background:transparent;color:var(--ink-soft);border:1px solid var(--line);}
.btn.small{width:auto;padding:6px 12px;font-size:12.5px;margin-top:0;}

details.toggle-form summary{
  display:flex;justify-content:space-between;align-items:center;cursor:pointer;
  list-style:none;
}
details.toggle-form summary::-webkit-details-marker{display:none;}
details.toggle-form summary .plus{
  width:26px;height:26px;border-radius:7px;background:var(--teal-wash);color:var(--teal-deep);
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;flex-shrink:0;
}
details.toggle-form[open] summary .plus{transform:rotate(45deg);}
.form-body{margin-top:10px;}

.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px;}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px;}
.stat .label{font-size:12px;color:var(--ink-soft);font-weight:600;}
.stat .value{font-family:var(--serif);font-size:24px;margin-top:4px;color:var(--ink);}
.stat.sales .value{color:var(--sage);}
.stat.expense .value{color:var(--brick);}
.stat.net .value{color:var(--teal-deep);}

.log-row{padding:10px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:8px;align-items:center;}
.log-row:last-child{border-bottom:none;}
.log-main{font-size:14px;font-weight:600;}
.log-sub{font-size:12px;color:var(--ink-soft);margin-top:2px;}
.log-amt{font-weight:700;font-size:14px;white-space:nowrap;}

.acct-row{display:flex;justify-content:space-between;align-items:center;padding:11px 0;border-bottom:1px solid var(--line);flex-wrap:wrap;gap:8px;}
.acct-row:last-child{border-bottom:none;}
.acct-role-tag{
  font-size:11px;font-weight:700;text-transform:capitalize;padding:2px 8px;border-radius:999px;
  background:var(--teal-wash);color:var(--teal-deep);display:inline-block;margin-left:6px;
}
.acct-role-tag.doctor{background:var(--amber-wash);color:var(--amber);}

form.inline{display:inline;}

/* Login screen */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px 18px;}
.login-card{width:100%;max-width:360px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:26px 22px 24px;text-align:center;}
.login-mark{width:52px;height:52px;border-radius:12px;background:var(--teal);color:white;display:flex;align-items:center;justify-content:center;font-size:26px;margin:0 auto 14px;}
.login-card h1{font-size:20px;color:var(--teal-deep);}
.login-card p.sub{font-size:13px;color:var(--ink-soft);margin:4px 0 18px;}
.login-card label{text-align:left;}
.login-hint{font-size:11.5px;color:var(--ink-soft);margin-top:16px;line-height:1.5;}

/* ---------------- POS terminal ---------------- */
.pos-wrap{display:grid;grid-template-columns:1fr;gap:14px;}
@media (min-width:820px){
  .pos-wrap{grid-template-columns:1.4fr 1fr;align-items:start;}
}
.pos-catalog{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px;}
.pos-search{margin-bottom:10px;}
.pos-grid{
  display:grid;grid-template-columns:repeat(auto-fill, minmax(130px,1fr));gap:8px;
  max-height:520px;overflow-y:auto;padding-top:2px;
}
.pos-tile{
  border:1px solid var(--line);background:var(--paper);border-radius:9px;padding:10px;
  text-align:left;display:flex;flex-direction:column;gap:4px;min-height:78px;
}
.pos-tile:active{background:var(--teal-wash);}
.pos-tile.disabled{opacity:0.4;}
.pos-tile-name{font-size:13px;font-weight:700;line-height:1.25;}
.pos-tile-meta{font-size:11px;color:var(--ink-soft);}
.pos-tile-price{font-size:12.5px;font-weight:700;color:var(--teal-deep);margin-top:auto;}

.pos-cart{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:14px;position:sticky;top:130px;
}
.cart-lines{max-height:280px;overflow-y:auto;margin-bottom:10px;}
.cart-line{
  display:grid;grid-template-columns:1fr auto auto auto;gap:8px;align-items:center;
  padding:9px 0;border-bottom:1px solid var(--line);
}
.cart-line:last-child{border-bottom:none;}
.cart-line-name{font-size:13.5px;font-weight:600;}
.cart-line-price{font-size:11px;color:var(--ink-soft);}
.cart-qty{display:flex;align-items:center;gap:6px;font-size:13px;font-weight:600;}
.qty-btn{
  width:22px;height:22px;border-radius:6px;border:1px solid var(--line);background:var(--paper);
  font-size:14px;line-height:1;display:flex;align-items:center;justify-content:center;
}
.cart-line-total{font-size:13px;font-weight:700;white-space:nowrap;}

.pos-totals{border-top:1px dashed var(--line);padding-top:10px;margin-bottom:6px;}
.pos-total-row{display:flex;justify-content:space-between;align-items:center;padding:4px 0;font-size:13.5px;}
.pos-total-row input{width:110px;padding:6px 8px;text-align:right;}
.pos-grand{font-family:var(--serif);font-size:18px;font-weight:700;color:var(--teal-deep);border-top:1px solid var(--line);margin-top:4px;padding-top:8px;}

.pos-filter-form{display:flex;gap:10px;align-items:flex-end;flex-wrap:wrap;}
.pos-filter-form > div{flex:1;min-width:130px;}
.pos-filter-form label{margin:0 0 4px;}
.pos-filter-form .btn{margin-top:0;height:38px;}

/* ---------------- Receipt ---------------- */
.receipt{max-width:420px;margin:0 auto;}
.receipt-head{text-align:center;margin-bottom:6px;}
.receipt-inv{font-size:12.5px;color:var(--ink-soft);margin:2px 0 0;}
.receipt-meta{border-top:1px dashed var(--line);border-bottom:1px dashed var(--line);padding:10px 0;margin:10px 0;font-size:13px;}
.receipt-meta div{display:flex;justify-content:space-between;padding:2px 0;}
.receipt-meta span{color:var(--ink-soft);}
.receipt-table{width:100%;border-collapse:collapse;font-size:12.5px;margin-bottom:10px;}
.receipt-table th{text-align:left;font-size:11px;color:var(--ink-soft);border-bottom:1px solid var(--line);padding:4px 4px;}
.receipt-table td{padding:6px 4px;border-bottom:1px solid var(--line);}
.receipt-table th:nth-child(2), .receipt-table td:nth-child(2),
.receipt-table th:nth-child(3), .receipt-table td:nth-child(3),
.receipt-table th:nth-child(4), .receipt-table td:nth-child(4){text-align:right;}
.receipt-totals{font-size:13.5px;}
.receipt-totals div{display:flex;justify-content:space-between;padding:3px 0;}
.receipt-totals .grand{font-family:var(--serif);font-size:18px;font-weight:700;color:var(--teal-deep);border-top:1px solid var(--line);margin-top:4px;padding-top:8px;}
.receipt-thanks{text-align:center;color:var(--ink-soft);font-size:12.5px;margin:14px 0 0;}

@media print{
  .topbar, .section-tabs, .no-print{display:none !important;}
  body{background:white;}
  main{max-width:none;padding:0;}
  .card.receipt{border:none;box-shadow:none;}
}

/* Small thermal printer (58mm/80mm roll) sizing */
@media print{
  @page{ size: 80mm auto; margin: 3mm; }
  .receipt-thermal{
    width:100% !important;font-family:'Courier New', monospace !important;
    font-size:11px !important;
  }
  .receipt-thermal .receipt-inv, .receipt-thermal .receipt-thanks{font-size:10px !important;}
}
.receipt-thermal{max-width:300px;}

/* ---------------- Live patient invoices (nurse) ---------------- */
.live-dot{
  width:9px;height:9px;border-radius:50%;background:var(--sage);display:inline-block;
  box-shadow:0 0 0 0 rgba(107,143,113,0.6);animation:live-pulse 1.8s infinite;
}
@keyframes live-pulse{
  0%{box-shadow:0 0 0 0 rgba(107,143,113,0.55);}
  70%{box-shadow:0 0 0 8px rgba(107,143,113,0);}
  100%{box-shadow:0 0 0 0 rgba(107,143,113,0);}
}
.invoice-row{
  display:flex;justify-content:space-between;align-items:center;gap:10px;
  padding:12px 0;border-bottom:1px solid var(--line);flex-wrap:wrap;
}
.invoice-row:last-child{border-bottom:none;}
.invoice-row.pending .log-main{color:var(--teal-deep);}
.new-flash{animation:flash-bg 2.2s ease;}
@keyframes flash-bg{
  0%{background:var(--amber-wash);}
  100%{background:transparent;}
}
.receipt-note{font-size:12px;color:var(--ink-soft);border-top:1px dashed var(--line);padding-top:8px;margin-top:8px;}