* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: #f4f5f7;
  color: #1a1a2e;
  padding: 24px;
}

.card {
  background: #fff;
  border-radius: 12px;
  padding: 40px;
  max-width: 420px;
  width: 100%;
  box-shadow: 0 2px 12px rgba(0,0,0,.08);
}

h1 { margin: 0 0 8px; font-size: 1.6rem; }
.lede { margin: 0 0 24px; color: #555; font-size: .95rem; }

label { display: block; font-size: .9rem; font-weight: 600; margin-bottom: 6px; }

.row { display: flex; gap: 8px; }

input[type="email"] {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 1rem;
}
input[type="email"]:focus { outline: 2px solid #4f46e5; outline-offset: 1px; }
input.invalid { border-color: #dc2626; }

button {
  padding: 10px 18px;
  border: none;
  border-radius: 8px;
  background: #4f46e5;
  color: #fff;
  font-size: 1rem;
  cursor: pointer;
}
button:hover { background: #4338ca; }
button:disabled { opacity: .6; cursor: wait; }

.error  { color: #dc2626; font-size: .875rem; margin: 8px 0 0; }
.status { color: #15803d; font-size: .95rem; margin: 12px 0 0; }
.status.duplicate { color: #0e7490; }
.status.error { color: #dc2626; }