:root{
  --primary:#d9480f;
  --primary-dark:#b8390c;
  --bg:#f7f4f0;
  --card:#ffffff;
  --text:#242023;
  --muted:#8a7f78;
  --border:#e8e1da;
  --radius:14px;
}
*{box-sizing:border-box;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  -webkit-tap-highlight-color:transparent;
}
input,select,button{font-family:inherit;font-size:16px;}
input[type=text],input[type=number],input[type=tel],input[type=email],input[type=password],select{
  width:100%;
  padding:12px 14px;
  border:1px solid var(--border);
  border-radius:10px;
  margin-bottom:12px;
  background:#fff;
  color:var(--text);
}
label{font-size:13px;color:var(--muted);font-weight:600;display:block;margin-bottom:4px;}
.mb8{margin-bottom:8px;}
.muted{color:var(--muted);}
.center{text-align:center;}
.hidden{display:none !important;}

/* Buttons */
.btn-primary{
  background:var(--primary);color:#fff;border:none;padding:14px;border-radius:10px;
  font-weight:700;width:100%;cursor:pointer;
}
.btn-primary:active{background:var(--primary-dark);}
.btn-secondary{
  background:#fff;color:var(--primary);border:1.5px solid var(--primary);padding:12px;border-radius:10px;
  font-weight:700;cursor:pointer;
}
.btn-ghost{
  background:transparent;color:var(--text);border:1px solid var(--border);padding:12px;border-radius:10px;
  font-weight:600;cursor:pointer;
}
.btn-link{background:none;border:none;color:var(--primary);font-weight:600;cursor:pointer;padding:8px;}
.small{padding:8px 12px;font-size:14px;width:auto;}
.row-btns{display:flex;gap:8px;}
.row-btns button{flex:1;}
.action-row{display:flex;gap:10px;padding:0 14px 24px;flex-wrap:wrap;}
.action-row button{flex:1;min-width:100px;}

/* Auth page */
.auth-body{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px;}
.auth-card{
  background:var(--card);padding:32px 24px;border-radius:20px;max-width:380px;width:100%;
  box-shadow:0 10px 40px rgba(0,0,0,0.08);text-align:center;
}
.auth-logo{font-size:48px;margin-bottom:8px;}
.auth-card h1{font-size:22px;margin:4px 0;}
.auth-card form{text-align:left;margin-top:20px;}
.msg{min-height:20px;font-size:14px;}
.msg.error{color:#c0392b;}

/* Top bar / tabs */
.topbar{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 16px;background:var(--primary);color:#fff;position:sticky;top:0;z-index:20;
}
.brand{font-weight:800;font-size:17px;}
.topbar .btn-ghost{color:#fff;border-color:rgba(255,255,255,0.5);padding:8px 12px;}
.tabs{
  display:flex;background:#fff;position:sticky;top:52px;z-index:19;border-bottom:1px solid var(--border);
}
.tab-btn{
  flex:1;padding:14px;background:none;border:none;font-weight:700;color:var(--muted);
  border-bottom:3px solid transparent;cursor:pointer;
}
.tab-btn.active{color:var(--primary);border-bottom-color:var(--primary);}
.tab-panel{display:none;padding:14px;max-width:640px;margin:0 auto;padding-bottom:60px;}
.tab-panel.active{display:block;}

/* Cards */
.card{
  background:var(--card);border-radius:var(--radius);padding:16px;margin-bottom:14px;
  box-shadow:0 2px 10px rgba(0,0,0,0.04);
}

/* Search dropdown */
.search-wrap{position:relative;}
.dropdown{
  position:absolute;top:calc(100% - 8px);left:0;right:0;background:#fff;border:1px solid var(--border);
  border-radius:10px;max-height:260px;overflow-y:auto;z-index:15;box-shadow:0 8px 24px rgba(0,0,0,0.12);
}
.dropdown-item{padding:12px 14px;border-bottom:1px solid var(--border);cursor:pointer;display:flex;justify-content:space-between;}
.dropdown-item:last-child{border-bottom:none;}
.dropdown-item:active{background:#faf3ee;}
.dropdown-item .rate{color:var(--muted);font-size:13px;}
.dropdown-empty{padding:14px;color:var(--muted);font-size:14px;text-align:center;}

/* Bill table */
.bill-table{width:100%;border-collapse:collapse;font-size:14px;}
.bill-table th{text-align:left;color:var(--muted);font-size:12px;padding-bottom:8px;border-bottom:1px solid var(--border);}
.bill-table td{padding:10px 4px;border-bottom:1px solid var(--border);vertical-align:middle;}
.bill-table input[type=number]{width:56px;margin:0;padding:6px;text-align:center;}
.remove-item{background:none;border:none;color:#c0392b;font-size:18px;cursor:pointer;padding:4px;}

/* Totals */
.totals-card .total-row{display:flex;justify-content:space-between;align-items:center;padding:8px 0;font-size:15px;}
.totals-card .grand{font-weight:800;font-size:18px;border-top:1px solid var(--border);margin-top:6px;padding-top:12px;color:var(--primary);}
.discount-input-group{display:flex;gap:6px;align-items:center;}
.discount-input-group input{width:80px;margin:0;padding:8px;}
.discount-input-group select{width:60px;margin:0;padding:8px;}

/* Product list / history list */
.list-row{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--border);}
.list-row:last-child{border-bottom:none;}
.list-row .name{font-weight:600;}
.list-row .sub{color:var(--muted);font-size:13px;}
.list-actions button{background:none;border:none;cursor:pointer;font-size:16px;padding:4px 8px;}
.edit-inline{display:flex;gap:6px;margin-top:6px;}
.edit-inline input{margin:0;padding:8px;}