/* ============================================================
   Sistema de Saldo — hoja de estilos compartida (admin + cliente)
   Mobile-first
   ============================================================ */

:root{
  --bg:#f4f4f6;
  --card:#ffffff;
  --border:#e8e8e8;
  --text:#1a1a1a;
  --text-muted:#767676;
  --text-faint:#aaaaaa;

  --primary:#2954e0;
  --primary-dark:#1d3eb8;
  --primary-light:#eef1fd;

  --success:#1a7a3a;
  --success-bg:#e6f9ee;
  --success-border:#c3e6cb;

  --danger:#c0392b;
  --danger-bg:#fff1f0;
  --danger-border:#f6c4be;

  --warning:#8a5a00;
  --warning-bg:#fffbeb;
  --warning-border:#f0d98a;

  --radius:14px;
  --radius-sm:9px;
  --shadow:0 4px 20px rgba(0,0,0,.06);
  --font: -apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{-webkit-text-size-adjust:100%;}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  font-size:15px;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  padding-bottom:40px;
}
a{color:var(--primary);text-decoration:none;}
a:hover{text-decoration:underline;}
code{background:#f0f0f0;border-radius:4px;padding:2px 6px;font-size:13px;}
h1,h2,h3{letter-spacing:-.02em;}

/* ---------- layout ---------- */
.container{max-width:1280px;margin:0 auto;padding:0 24px;}
.container-narrow{max-width:480px;margin:0 auto;padding:0 16px;}

/* ---------- topbar ---------- */
.topbar{
  background:#fff;border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:50;
}
.topbar-inner{
  max-width:1280px;margin:0 auto;padding:0 24px;
  display:flex;align-items:center;justify-content:space-between;
  height:56px;
}
.brand{font-weight:800;font-size:16px;letter-spacing:-.02em;display:flex;align-items:center;gap:8px;color:var(--text);}
.brand .dot{width:9px;height:9px;border-radius:50%;background:var(--primary);display:inline-block;}
.burger{display:flex;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer;padding:8px;}
.burger span{width:21px;height:2px;background:var(--text);border-radius:2px;}
.navlinks{
  position:fixed;top:56px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);
  display:flex;flex-direction:column;padding:6px 0;box-shadow:0 8px 20px rgba(0,0,0,.08);
  max-height:0;overflow:hidden;transition:max-height .2s ease;
}
.navlinks.open{max-height:520px;}
.navlinks a{
  padding:13px 20px;color:var(--text);font-size:14.5px;font-weight:600;border-bottom:1px solid #f5f5f5;
}
.navlinks a.active{color:var(--primary);background:var(--primary-light);}
.navlinks a:hover{text-decoration:none;background:#fafafa;}
.nav-user{padding:11px 20px;font-size:12px;color:var(--text-faint);border-bottom:1px solid #f5f5f5;}

@media (min-width:760px){
  .burger{display:none;}
  .topbar-inner{height:auto;min-height:56px;padding:9px 24px;}
  .brand{white-space:nowrap;}
  .navlinks{
    position:static;max-height:none;overflow:visible;flex-direction:row;align-items:center;flex-wrap:wrap;
    border-bottom:none;box-shadow:none;padding:0;background:none;justify-content:flex-end;row-gap:4px;
  }
  .navlinks a{border-bottom:none;border-radius:8px;padding:8px 11px;font-size:13.5px;}
  .nav-user{display:none;}
}

.page-head{padding:26px 0 18px;}
.page-head h1{font-size:21px;font-weight:700;}
.page-head p{font-size:13px;color:var(--text-muted);margin-top:4px;}

/* ---------- cards ---------- */
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:22px;margin-bottom:16px;box-shadow:var(--shadow);
}
.card-t{font-size:14px;font-weight:700;margin-bottom:14px;color:var(--text);}
.card-sub{font-size:12.5px;color:var(--text-muted);margin-top:-8px;margin-bottom:14px;}

.grid{display:grid;gap:14px;}
.grid-2{grid-template-columns:1fr;}
.grid-3{grid-template-columns:1fr;}
.grid>div{min-width:0;}
@media (min-width:560px){
  .grid-2{grid-template-columns:1fr 1fr;}
  .grid-3{grid-template-columns:1fr 1fr 1fr;}
}

.stat{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:18px;text-align:left;
}
.stat .v{font-size:26px;font-weight:800;letter-spacing:-.02em;}
.stat .l{font-size:12px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;margin-top:2px;}

/* ---------- forms ---------- */
label{font-size:13px;color:#555;display:block;margin-bottom:5px;margin-top:13px;font-weight:600;}
label:first-child{margin-top:0;}
input[type=text],input[type=email],input[type=password],input[type=number],
input[type=tel],input[type=url],input[type=date],select,textarea{
  width:100%;border:1.5px solid #ddd;border-radius:var(--radius-sm);padding:11px 13px;
  font-size:15px;outline:none;font-family:var(--font);background:#fff;color:var(--text);
}
input:focus,select:focus,textarea:focus{border-color:var(--primary);}
.hint{font-size:12px;color:var(--text-faint);margin-top:5px;line-height:1.5;}
.r2{display:flex;gap:12px;}
.r2>div{flex:1;}
.checkrow{display:flex;align-items:center;gap:9px;margin-top:13px;}
.checkrow input{width:auto;}
.checkrow label{margin:0;font-weight:600;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--primary);color:#fff;border:none;border-radius:11px;
  padding:13px 22px;font-size:14.5px;font-weight:700;cursor:pointer;
  text-decoration:none;letter-spacing:-.01em;transition:opacity .15s,transform .1s;
}
.btn:hover{opacity:.9;text-decoration:none;}
.btn:active{transform:scale(.97);}
.btn-block{width:100%;}
.btn-secondary{background:#f0f0f2;color:var(--text);}
.btn-danger{background:var(--danger);}
.btn-success{background:var(--success);}
.btn-sm{padding:8px 14px;font-size:13px;border-radius:9px;}
.btn-outline{background:transparent;color:var(--primary);border:1.5px solid var(--primary);}
.btn[disabled]{opacity:.5;cursor:not-allowed;}

/* ---------- alerts ---------- */
.alert{border-radius:var(--radius-sm);padding:12px 15px;font-size:13.5px;margin-bottom:16px;border:1px solid;}
.alert.ok{background:var(--success-bg);color:var(--success);border-color:var(--success-border);}
.alert.error{background:var(--danger-bg);color:var(--danger);border-color:var(--danger-border);}
.alert.warning{background:var(--warning-bg);color:var(--warning);border-color:var(--warning-border);}
.alert ul{margin:4px 0 0 16px;}

/* ---------- badges ---------- */
.badge{display:inline-block;padding:3px 10px;border-radius:99px;font-size:11.5px;font-weight:700;letter-spacing:.01em;}
.badge.ok{background:var(--success-bg);color:var(--success);}
.badge.pending{background:var(--warning-bg);color:var(--warning);}
.badge.error{background:var(--danger-bg);color:var(--danger);}
.badge.gris{background:#f0f0f0;color:#777;}

/* ---------- tables ---------- */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border);background:#fff;box-shadow:var(--shadow);}
table{width:100%;border-collapse:collapse;font-size:13.5px;}
table th{text-align:left;font-size:11.5px;text-transform:uppercase;letter-spacing:.04em;color:var(--text-faint);
  padding:12px 14px;border-bottom:1px solid var(--border);white-space:nowrap;}
table td{padding:12px 14px;border-bottom:1px solid #f3f3f3;white-space:nowrap;}
table tr:last-child td{border-bottom:none;}
table tr:hover td{background:#fafbff;}

/* ---------- saldo / amounts ---------- */
.saldo-grande{font-size:42px;font-weight:800;letter-spacing:-.03em;color:var(--primary);}
.saldo-label{font-size:12px;color:var(--text-faint);text-transform:uppercase;letter-spacing:.06em;}

/* ---------- qr ---------- */
.qr-frame{
  background:#fff;border-radius:var(--radius);padding:24px;text-align:center;
  border:1px solid var(--border);box-shadow:var(--shadow);
}
.qr-frame img{width:100%;max-width:280px;height:auto;border-radius:8px;}
.qr-token{font-family:monospace;font-size:12px;color:var(--text-faint);margin-top:10px;word-break:break-all;}

/* ---------- tabs (cobrar.php) ---------- */
.tabs{display:flex;gap:8px;margin-bottom:16px;background:#eceef4;padding:4px;border-radius:11px;}
.tab{flex:1;text-align:center;padding:10px;border-radius:9px;font-size:13.5px;font-weight:700;color:var(--text-muted);cursor:pointer;}
.tab.active{background:#fff;color:var(--primary);box-shadow:0 1px 4px rgba(0,0,0,.08);}

/* ---------- scanner ---------- */
.scanner-box{position:relative;border-radius:var(--radius);overflow:hidden;background:#000;aspect-ratio:1/1;max-width:420px;margin:0 auto;}
.scanner-box video{width:100%;height:100%;object-fit:cover;display:block;}
.scanner-frame{position:absolute;inset:14%;border:3px solid rgba(255,255,255,.85);border-radius:18px;pointer-events:none;}
.scanner-hint{position:absolute;bottom:10px;left:0;right:0;text-align:center;color:#fff;font-size:12px;text-shadow:0 1px 3px rgba(0,0,0,.6);}

/* ---------- client search result row ---------- */
.cliente-row{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 14px;border:1.5px solid var(--border);border-radius:var(--radius-sm);
  margin-top:8px;cursor:pointer;background:#fff;
}
.cliente-row:hover{border-color:var(--primary);}
.cliente-row .nm{font-weight:700;font-size:14px;}
.cliente-row .em{font-size:12px;color:var(--text-muted);}
.cliente-row .sal{font-weight:700;color:var(--primary);font-size:14px;}

/* ---------- misc ---------- */
.text-center{text-align:center;}
.text-muted{color:var(--text-muted);}
.text-faint{color:var(--text-faint);}
.mt-8{margin-top:8px;}
.mt-16{margin-top:16px;}
.mt-24{margin-top:24px;}
.flex{display:flex;align-items:center;}
.flex-between{display:flex;align-items:center;justify-content:space-between;}
.gap-8{gap:8px;}
hr{border:none;border-top:1px solid #f0f0f0;margin:18px 0;}
.empty-state{text-align:center;padding:50px 20px;color:var(--text-faint);}
.empty-state .ic{font-size:34px;margin-bottom:10px;}
.spinner{width:26px;height:26px;border:3px solid #e0e0e0;border-top-color:var(--primary);border-radius:50%;
  animation:spin .8s linear infinite;margin:0 auto;}
@keyframes spin{to{transform:rotate(360deg);}}
.footer-note{text-align:center;font-size:12px;color:var(--text-faint);margin-top:30px;}

/* ---------- logo en topbar ---------- */
.brand img.logo{height:26px;width:auto;border-radius:5px;display:block;}

/* ---------- zona de peligro ---------- */
.danger-zone{border:1.5px dashed var(--danger-border);background:var(--danger-bg);border-radius:var(--radius);padding:18px 22px;margin-bottom:16px;}
.danger-zone .card-t{color:var(--danger);}

/* ---------- codigo de seguridad ---------- */
.codigo-seg{font-family:monospace;font-size:14.5px;font-weight:700;letter-spacing:1.5px;color:var(--text);background:#f7f7f9;border:1px solid var(--border);border-radius:8px;padding:8px 12px;display:inline-block;word-break:break-all;}

/* ---------- input con sugerencias (concepto) ---------- */
.input-suggest{position:relative;}

/* ---------- checklist de clientes para imprimir tarjetas ---------- */
.pick-list{max-height:420px;overflow-y:auto;border:1px solid var(--border);border-radius:var(--radius-sm);}
.pick-row{display:flex;align-items:center;gap:10px;padding:10px 14px;border-bottom:1px solid #f3f3f3;font-size:13.5px;}
.pick-row input{width:auto;}
.pick-row:last-child{border-bottom:none;}

/* ---------- hoja imprimible de tarjetas ---------- */
.tarjeta-card{
  border:1.5px solid #ccc;border-radius:10px;padding:14px;display:flex;gap:14px;align-items:center;
  break-inside:avoid;page-break-inside:avoid;
}
.tarjeta-card .qr{width:110px;height:110px;flex:none;}
.tarjeta-card .info{flex:1;min-width:0;}
.tarjeta-card .info .nm{font-weight:800;font-size:15px;margin-bottom:2px;}
.tarjeta-card .info .idc{font-size:12px;color:var(--text-muted);margin-bottom:6px;}
.tarjeta-card .info .cod{font-family:monospace;font-size:13px;font-weight:700;letter-spacing:1px;}
.tarjetas-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
@media print{
  body{padding-bottom:0;background:#fff;}
  .no-print{display:none!important;}
  .tarjetas-grid{grid-template-columns:1fr 1fr;}
  .tarjeta-card{border-color:#999;}
  @page{margin:12mm;}
}