:root {
  --brand: #e8732c;
  --text: #1f1f1f;
  --muted: #5f5f5f;
  --border: #d6d6d6;
  --background: #ffffff;
}

* { box-sizing: border-box; }

html { font-size: 16px; }

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.5;
  color: var(--text);
  background: var(--background);
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px;
}

.site-header {
  background: var(--brand);
  color: #fff;
  padding: 12px 0;
  margin-bottom: 24px;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
}

.brand { font-weight: bold; }

h1 { font-size: 1.5rem; margin: 0 0 12px; }

.muted { color: var(--muted); font-size: 0.875rem; }

h2 { font-size: 1.125rem; margin: 0 0 8px; }

form { margin: 16px 0; }

label { display: block; font-weight: bold; margin-bottom: 4px; }

input {
  font: inherit;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.code-input {
  width: 10ch;
  font-size: 1.25rem;
  letter-spacing: 0.15em;
  display: block;
  margin-bottom: 12px;
}

.button {
  font: inherit;
  font-weight: bold;
  padding: 10px 18px;
  border: 1px solid var(--brand);
  border-radius: 4px;
  background: var(--brand);
  color: #fff;
  cursor: pointer;
}

.button.secondary {
  background: #fff;
  color: var(--brand);
}

.error { color: #b00020; font-weight: bold; }

.notice {
  padding: 10px 12px;
  border-left: 4px solid var(--brand);
  background: #fdf1e9;
}

.data {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 4px 16px;
}

.data dt { color: var(--muted); }

.data dd { margin: 0; }

fieldset {
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 12px 16px 4px;
  margin: 0 0 20px;
}

legend { font-weight: bold; padding: 0 6px; }

.field { margin-bottom: 16px; }

.field .muted { margin: 4px 0 0; }

.field .error { margin: 4px 0 0; }

.wide { width: 100%; }

select {
  font: inherit;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: #fff;
  max-width: 100%;
}

input[aria-invalid="true"] { border-color: #b00020; }

.checkbox {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0 10px;
  align-items: start;
}

.checkbox input { margin-top: 5px; width: 18px; height: 18px; }

.checkbox label { font-weight: normal; margin: 0; }

.checkbox .error { grid-column: 1 / -1; }

.label { display: block; font-weight: bold; margin-bottom: 4px; }

/* The border sits on the wrapper, so the canvas's clientWidth is its drawing width. */
.signature-box {
  border: 1px solid var(--muted);
  border-radius: 4px;
  margin: 8px 0;
  background: #fff;
}

.signature-box canvas {
  display: block;
  width: 100%;
  height: 200px;
  touch-action: none;
}

.button.small { padding: 6px 12px; font-size: 0.875rem; }

.button:disabled { opacity: 0.6; cursor: wait; }

a.button { display: inline-block; text-decoration: none; }

.dev-hint {
  margin-top: 32px;
  padding: 12px 16px;
  border: 1px dashed var(--muted);
  color: var(--muted);
  font-size: 0.875rem;
}