:root {
  --ink: #1b2a4a;
  --paper: #f7f5f2;
  --accent: #c8532b;
  --accent-dark: #a4431f;
  --muted: #5a6478;
  --error: #b3261e;
  --ok: #1e6b3a;
  --card: #ffffff;
  --border: #d8d3cc;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Georgia, 'Times New Roman', serif;
  background: var(--paper);
  color: var(--ink);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  font-size: 1.0625rem;
  line-height: 1.6;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2.5rem;
  max-width: 30rem;
  width: 100%;
  box-shadow: 0 2px 12px rgba(27, 42, 74, 0.08);
}

h1 {
  font-size: 1.75rem;
  margin: 0 0 0.5rem;
  line-height: 1.2;
}

.lede { color: var(--muted); margin: 0 0 1.5rem; }

label {
  display: block;
  font-weight: bold;
  margin-bottom: 0.4rem;
}

.row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

input[type="email"] {
  flex: 1 1 12rem;
  min-width: 0;
  padding: 0.65rem 0.75rem;
  font: inherit;
  color: var(--ink);
  background: var(--card);
  border: 1px solid var(--muted);
  border-radius: 8px;
}

input[type="email"]:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

button {
  padding: 0.65rem 1.4rem;
  font: inherit;
  font-weight: bold;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

button:hover { background: var(--accent-dark); }
button:disabled { opacity: 0.6; cursor: wait; }

#form-message { margin: 0.9rem 0 0; min-height: 1.5em; font-size: 0.95rem; }
#form-message.ok { color: var(--ok); }
#form-message.err { color: var(--error); }

.footnote {
  margin-top: 1.75rem;
  font-size: 0.85rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

@media (max-width: 480px) {
  .card { padding: 1.5rem; }
  .row { flex-direction: column; }
  button { width: 100%; }
}