* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: #D9A825; /* golden outer background */
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #D9A825;
}

.container {
  width: 100%;
  max-width: 700px;
  padding: 24px;
  background: #4B2600; /* deep brown box */
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .35);
}

h1 {
  margin-top: 0;
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  color: #D9A825;
}

p {
  color: #D9A825;
  margin-bottom: 24px;
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

label {
  font-weight: 600;
  color: #D9A825;
}

.req {
  color: #ff7b7b;
  margin-left: 4px;
}

input {
  width: 100%;
  padding: 12px 14px;
  border: 2px solid #002244;
  border-radius: 12px;
  background: #D9A825;
  color: #4B2600;
  font-size: 1rem;
  outline: none;
}

input:focus {
  border-color: #002244;
  box-shadow: 0 0 0 2px rgba(0, 0, 0, .2);
}

.btn {
  background: #D9A825;
  border: 2px solid #002244;
  color: #4B2600;
  font-weight: 700;
  padding: 12px 18px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
}

.btn:hover {
  filter: brightness(1.05);
}

.fineprint {
  margin-top: 16px;
  font-size: .86rem;
  color: #D9A825;
}

@media (max-width: 640px) {
  .container {
    margin: 20px;
    padding: 20px;
  }

  h1 {
    font-size: 1.5rem;
  }

  .btn {
    width: 100%;
    text-align: center;
  }
}