.checkout-overlay{
  position:fixed;
  inset:0;
  z-index:1000;
  display:none;
  align-items:center;
  justify-content:center;
  padding:18px;
  background:rgba(2,15,30,.78);
  backdrop-filter:blur(7px);
}
.checkout-overlay.open{display:flex}
.checkout-modal{
  position:relative;
  width:min(540px,100%);
  max-height:92vh;
  overflow:auto;
  background:#fff;
  border-radius:18px;
  padding:30px;
  box-shadow:0 30px 90px rgba(0,0,0,.35);
}
.checkout-close{
  position:absolute;
  top:14px;
  right:14px;
  width:38px;
  height:38px;
  border:0;
  border-radius:50%;
  background:#edf6fc;
  color:#09233f;
  font-size:24px;
  cursor:pointer;
}
.checkout-title{margin:0 45px 5px 0;font-size:27px}
.checkout-subtitle{margin:0 0 22px;color:#64748b}
.checkout-plan{
  display:flex;
  justify-content:space-between;
  gap:15px;
  padding:15px 17px;
  margin-bottom:20px;
  border:1px solid #bfe5fa;
  border-radius:11px;
  background:#eff9ff;
}
.checkout-plan b{color:#087fc4}
.checkout-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.checkout-field{margin-bottom:14px}
.checkout-field.full{grid-column:1/-1}
.checkout-field label{
  display:block;
  margin-bottom:5px;
  color:#173b5c;
  font-size:14px;
  font-weight:700;
}
.checkout-field input{
  width:100%;
  min-height:46px;
  padding:10px 12px;
  border:1px solid #cbdbe8;
  border-radius:9px;
  color:#09233f;
  background:#fff;
  font:inherit;
  outline:none;
}
.checkout-field input:focus{
  border-color:#0797ed;
  box-shadow:0 0 0 3px rgba(7,151,237,.12);
}
.checkout-submit{
  width:100%;
  min-height:49px;
  border:0;
  border-radius:9px;
  background:linear-gradient(135deg,#087ed0,#12b8ff);
  color:#fff;
  font-weight:800;
  cursor:pointer;
}
.checkout-submit:disabled{opacity:.6;cursor:wait}
.checkout-message{
  display:none;
  padding:13px;
  margin:14px 0;
  border-radius:9px;
  font-size:14px;
}
.checkout-message.show{display:block}
.checkout-message.error{color:#991b1b;background:#fef2f2}
.checkout-message.info{color:#075985;background:#eff9ff}
.checkout-message.success{color:#065f46;background:#ecfdf5}
.paypal-area{display:none;margin-top:18px}
.paypal-area.show{display:block}
.checkout-secure{
  text-align:center;
  margin:13px 0 0;
  color:#64748b;
  font-size:13px;
}
@media(max-width:550px){
  .checkout-modal{padding:25px 19px}
  .checkout-grid{grid-template-columns:1fr}
  .checkout-field.full{grid-column:auto}
}