* {
  box-sizing: border-box;
}
body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  background: #0b1020;
  color: #e5edf8;
  font: 16px system-ui, sans-serif;
}
.box {
  width: min(360px, calc(100% - 32px));
  padding: 28px;
  background: #121b30;
  border: 1px solid #31405f;
  border-radius: 12px;
}
h1 {
  margin: 0 0 20px;
  font-size: 22px;
}
label {
  display: block;
  margin-bottom: 8px;
  color: #a9b8d0;
}
input,
button {
  width: 100%;
  height: 44px;
  padding: 0 12px;
  background: #0b1427;
  border: 1px solid #3a4a68;
  border-radius: 8px;
  color: #fff;
  font-size: 16px;
}
button {
  margin-top: 14px;
  background: #2563eb;
  border-color: #2563eb;
  cursor: pointer;
}
.error {
  min-height: 22px;
  margin-top: 12px;
  color: #fca5a5;
}