* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: #1e2a3a;
  color: #1b2430;
}
.card {
  width: 340px;
  background: #fff;
  border-radius: 6px;
  padding: 28px 28px 24px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, .35);
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.title { font-size: 18px; font-weight: 600; text-align: center; margin-bottom: 6px; }
.title span {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: #8b97a8;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-top: 4px;
}
label { display: flex; flex-direction: column; gap: 5px; }
label span { font-size: 11px; color: #5b6675; text-transform: uppercase; letter-spacing: .5px; }
input {
  height: 38px;
  padding: 0 11px;
  border: 1px solid #c2c8d0;
  border-radius: 4px;
  font-size: 14px;
}
input:focus { outline: 2px solid rgba(47, 85, 151, .35); border-color: #2f5597; }
.btn {
  height: 40px;
  margin-top: 6px;
  background: #2f5597;
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
}
.btn:hover { background: #274a86; }
.err {
  background: #fbe9ea;
  color: #b4232a;
  border: 1px solid #f0c5c8;
  border-radius: 4px;
  padding: 8px 10px;
  font-size: 13px;
}