* {
  box-sizing: border-box;
}

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

.login-panel {
  width: min(100%, 420px);
  border: 1px solid #3a4a6b;
  background: #16213e;
  padding: 28px;
  border-radius: 8px;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.28);
}

.login-logo {
  display: block;
  width: 166px;
  height: 60px;
  margin-bottom: 18px;
}

h1 {
  margin: 0 0 6px;
  font-size: 26px;
  line-height: 1.2;
}

.login-subtitle {
  margin: 0 0 22px;
  color: #8899aa;
  font-size: 14px;
}

label {
  display: block;
  margin: 14px 0 6px;
  color: #c5d0e2;
  font-size: 13px;
  font-weight: 600;
}

input {
  display: block;
  width: 100%;
  padding: 11px 12px;
  border: 1px solid #3a4a6b;
  border-radius: 6px;
  background: #1a2745;
  color: #eee;
  font: inherit;
}

input:focus {
  outline: 2px solid #4a90e2;
  outline-offset: 1px;
}

button {
  display: block;
  width: 100%;
  margin-top: 18px;
  padding: 11px 14px;
  border: none;
  border-radius: 6px;
  background: #4a90e2;
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

button:hover {
  background: #3a7bd5;
}

#error {
  color: #ffb4b4;
  min-height: 1.5em;
  margin-top: 14px;
  font-size: 14px;
}

@media (max-width: 640px) {
  body {
    display: block;
    padding: 18px;
  }

  .login-panel {
    width: 100%;
    min-height: calc(100dvh - 36px);
    padding: 24px 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .login-logo {
    width: 150px;
    height: auto;
    margin-bottom: 20px;
  }

  h1 {
    font-size: 24px;
  }

  .login-subtitle {
    margin-bottom: 24px;
  }

  input,
  button {
    min-height: 46px;
    font-size: 16px;
  }
}