public/style.css

/* ===== Secret Swap minimalist styling ===== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  margin: 2rem;
  background: #f9f9fb;
  color: #333;
  line-height: 1.5;
}

h1,
h2 {
  margin-top: 0;
  color: #111;
}

.container {
  max-width: 640px;
  margin: 0 auto;
}

form {
  margin-top: 1rem;
}

label {
  display: block;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 0.45rem 0.6rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 1rem;
}

button {
  padding: 0.55rem 1.1rem;
  border: none;
  border-radius: 4px;
  background: #1e88e5;
  color: #fff;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.18s ease-in-out;
}

button:hover {
  background: #1565c0;
}

a {
  color: #1e88e5;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

ul {
  padding-left: 1.25rem;
}

li {
  margin-bottom: 0.35rem;
}

.message {
  padding: 0.85rem 1rem;
  border: 1px solid #1e88e5;
  background: #e3f2fd;
  border-radius: 4px;
  margin: 1rem 0;
}

.error {
  border-color: #e53935;
  background: #ffebee;
}