body { font-family: Arial, sans-serif; margin: 2em; background: #f8fafc; }
h2 { text-align: center; color: #2563eb; margin-bottom: 1.5em; }
label.custom-file-input {
  display: inline-block;
  background: #2563eb;
  color: #fff;
  padding: 0.8em 2em;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  margin-bottom: 1em;
  transition: background 0.2s, box-shadow 0.2s;
}
label.custom-file-input:hover { background: #1e40af; }
input[type="file"] { display: none; }
button {
  background: #10b981;
  color: #fff;
  border: none;
  padding: 0.8em 2em;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 1em;
  transition: background 0.2s;
}
button:hover { background: #059669; }
#downloadLink {
  display: inline-block;
  background: #2563eb;
  color: #fff;
  padding: 0.7em 1.7em;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  margin-top: 1.2em;
  transition: background 0.2s;
}
#downloadLink:hover { background: #1e40af; }
.row {
  display: flex;
  gap: 2em;
  margin-top: 2.5em;
  justify-content: center;
}
.col {
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 4px 16px rgba(37,99,235,0.08);
  padding: 2em 1.5em 1.5em 1.5em;
  flex: 1 1 350px;
  max-width: 420px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.col h4 {
  margin-top: 0;
  color: #1e40af;
  font-size: 1.22rem;
  margin-bottom: 1em;
}
img {
  margin-top: 1em;
  max-width: 100%;
  border-radius: 10px;
  border: 2px solid #e5e7eb;
  background: #f1f5f9;
  box-shadow: 0 2px 12px rgba(37,99,235,0.05);
}
.info {
  font-size: 1rem;
  color: #64748b;
  background: #f1f5f9;
  padding: 0.8em 1em;
  border-radius: 8px;
  margin-top: 1em;
  width: 100%;
  text-align: center;
  word-break: break-all;
  box-shadow: 0 1px 4px rgba(37,99,235,0.03);
}
@media (max-width: 900px) {
  .row { flex-direction: column; gap: 1.5em; align-items: center; }
  .col { max-width: 95vw; }
  h2 { font-size: 1.5rem; }
}