* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  background: #f4f7f9;
  color: #172026;
}

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.auth-panel {
  width: min(100%, 380px);
  background: #ffffff;
  border: 1px solid #d8e0e5;
  border-radius: 8px;
  padding: 24px;
  box-shadow: 0 12px 30px rgba(23, 32, 38, 0.08);
}

h1 {
  margin: 0 0 18px;
  font-size: 22px;
  line-height: 1.25;
}

label {
  display: block;
  margin: 14px 0 6px;
  font-weight: 700;
  font-size: 14px;
}

input {
  width: 100%;
  min-height: 42px;
  border: 1px solid #b9c5cc;
  border-radius: 6px;
  padding: 8px 10px;
  font: inherit;
}

button {
  width: 100%;
  min-height: 42px;
  margin-top: 18px;
  border: 0;
  border-radius: 6px;
  background: #145c72;
  color: #ffffff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.auth-error {
  margin: 0 0 12px;
  padding: 10px;
  border-radius: 6px;
  background: #fff1f0;
  color: #9b1c16;
}