.au-form{
  max-width:900px;
  margin:30px auto;
  padding:24px;
  background:#ffffff;
  border-radius:12px;
  box-shadow:0 0 18px rgba(0,0,0,.10);
  font-family: Arial, sans-serif;
}

.au-form h2{
  margin:0 0 18px 0;
  font-size:22px;
}

.au-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:16px;
}

@media (max-width: 900px){
  .au-grid{ grid-template-columns: 1fr; }
}

.au-card{
  background:#fff;
  border:1px solid #e9e9e9;
  border-radius:10px;
  padding:16px;
}

.au-full{
  margin-top:16px;
}

.au-section-title{
  margin:0 0 10px 0;
  font-size:16px;
}

.au-form label{
  font-weight:600;
  display:block;
  margin-top:12px;
}

.au-req{ color:#c40000; font-weight:800; }

.au-input,
.au-form input,
.au-form select,
.au-form textarea{
  width:100%;
  padding:10px;
  margin-top:6px;
  border-radius:8px;
  border:1px solid #cfcfcf;
  box-sizing:border-box;
}

.au-help{
  display:block;
  margin-top:6px;
  color:#555;
}

.preview-box{
  margin-top:18px;
  padding:16px;
  background:#f4f7ff;
  border-left:6px solid #0a5cff;
  border-radius:10px;
}

.preview-head h3{
  margin:0 0 6px 0;
}

.pv-sub{
  margin:0;
  color:#333;
}

.pv-title{
  margin:14px 0 10px 0;
}

.pv-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:10px 16px;
}

@media (max-width: 900px){
  .pv-grid{ grid-template-columns: 1fr; }
}

.pv-row{
  display:flex;
  justify-content:space-between;
  gap:10px;
  padding:8px 10px;
  background:#fff;
  border:1px solid #e6e6e6;
  border-radius:8px;
}

.pv-wide{
  grid-column: 1 / -1;
  align-items:flex-start;
}

.pv-label{
  font-weight:700;
  color:#222;
  min-width:140px;
}

.pv-val{
  color:#111;
  text-align:right;
  white-space:pre-wrap;
  overflow-wrap:anywhere;
}

.au-submit{
  display:block;
  margin:20px auto 0 auto;
  padding:12px 44px;
  font-size:16px;
  background:#0a5cff;
  color:#ffffff;
  border:none;
  border-radius:10px;
  cursor:pointer;
}

.au-submit:hover{ opacity:.92; }

.au-error{
  max-width:900px;
  margin:15px auto;
  padding:12px 14px;
  border-radius:10px;
  background:#ffecec;
  color:#b10000;
  font-weight:800;
}

.au-success{
  max-width:900px;
  margin:15px auto;
  padding:12px 14px;
  border-radius:10px;
  background:#eaffea;
  color:#0b6b0b;
  font-weight:800;
}