/* Container */
.stb-form { --radius:12px; --gap:14px; }
.stb-form form.stb-request-form {
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
  background:#fff; border:1px solid #e5e7eb; border-radius:var(--radius);
  padding:18px;
}
.stb-form .stb-row { display:flex; flex-direction:column; gap:6px; }
.stb-form label { font-weight:600; color:#111827; }
.stb-form input, .stb-form select, .stb-form textarea {
  width:100%; padding:10px 12px; border:1px solid #d1d5db; border-radius:8px; background:#fff;
}
.stb-form textarea { min-height:110px; grid-column:1 / -1; }
.stb-form .stb-row-full { grid-column: 1 / -1; }
.stb-form .stb-actions { grid-column:1 / -1; display:flex; justify-content:flex-end; }
.stb-form .stb-actions button[type=submit] {
  appearance:none; background:#7c3aed; color:#fff; font-weight:600;
  border:0; border-radius:10px; padding:10px 16px; cursor:pointer;
}
.stb-form .stb-actions button[type=submit]:hover { filter:brightness(0.95); }
.stb-form .stb-msg { margin-top:8px; font-size:0.93rem; }

/* Responsive */
@media (max-width: 680px){
  .stb-form form.stb-request-form { grid-template-columns: 1fr; }
}