:root {
  --brand: #a3132f;
  --brand-dark: #520a18;
  --cream: #e8e2d4;
  --ink: #1c1c1c;
  --error: #b3261e;
}

* { box-sizing: border-box; }

/* The hidden attribute must win over explicit display rules (e.g. label). */
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: #f4f1ea;
}

header {
  background: radial-gradient(circle at 50% 20%, var(--brand), var(--brand-dark));
  color: #fff;
  padding: 1.2rem 1.5rem;
}

header h1 { margin: 0 0 0.2rem; font-size: 1.5rem; letter-spacing: 0.04em; }
.privacy { margin: 0; color: var(--cream); font-size: 0.9rem; }

main {
  display: grid;
  grid-template-columns: minmax(280px, 420px) 1fr;
  gap: 1.5rem;
  padding: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

@media (max-width: 800px) {
  main { grid-template-columns: 1fr; }
}

fieldset {
  border: 1px solid #d8d2c4;
  border-radius: 8px;
  margin: 0 0 1rem;
  padding: 0.8rem 1rem;
  background: #fff;
}

legend { font-weight: 600; padding: 0 0.4rem; }

label { display: block; margin: 0.5rem 0; font-size: 0.9rem; }
label.check { display: flex; align-items: center; gap: 0.4rem; }

input[type="text"], select {
  display: block;
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.45rem 0.5rem;
  font-size: 1rem;
  border: 1px solid #c9c2b2;
  border-radius: 5px;
}

input[type="color"] {
  margin-top: 0.25rem;
  inline-size: 3.5rem;
  block-size: 2rem;
  padding: 0;
  border: 1px solid #c9c2b2;
  border-radius: 5px;
}

.field-error {
  display: block;
  color: var(--error);
  font-size: 0.8rem;
  min-height: 1em;
}

#downloads button {
  font-size: 1rem;
  padding: 0.5rem 1.1rem;
  margin-right: 0.4rem;
  border: 1px solid var(--brand);
  border-radius: 6px;
  background: var(--brand);
  color: #fff;
  cursor: pointer;
}

#downloads button:disabled {
  background: #b5b0a4;
  border-color: #b5b0a4;
  cursor: not-allowed;
}

#preview-pane {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
}

#preview svg {
  width: 100%;
  height: auto;
  max-width: 560px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
  border-radius: 4px;
}

#loading, .hint { color: #6b6552; padding: 2rem; }

footer {
  text-align: center;
  color: #6b6552;
  font-size: 0.8rem;
  padding: 1rem;
}

/* Print only the sign, at page size. */
@media print {
  header, footer, #sign-form, #loading, .hint { display: none !important; }
  body { background: #fff; }
  main { display: block; padding: 0; margin: 0; max-width: none; }
  #preview svg {
    max-width: none;
    width: 100%;
    box-shadow: none;
    border-radius: 0;
  }
  @page { margin: 0; size: letter portrait; }
}