:root {
  --login-bg: #f6f6f6;
  --login-panel-bg: #ffffff;
  --login-text: #1f1f1f;
  --login-muted-border: #d8d8d8;
  --login-control-border: #bdbdbd;
  --login-action: #2f2f2f;
  --login-action-hover: #444444;
  --login-danger: #b42318;
  --login-focus-ring: rgba(47, 47, 47, 0.2);
  --login-font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

html {
  min-height: 100%;
}

body.login-page {
  min-height: 100vh;
  margin: 0;
  background: var(--login-bg);
  color: var(--login-text);
  font-family: var(--login-font-sans);
}

.login-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  box-sizing: border-box;
}

.form-signin {
  width: 100%;
  max-width: 360px;
  padding: 28px;
  background: var(--login-panel-bg);
  border: 1px solid var(--login-muted-border);
  border-radius: 8px;
  box-sizing: border-box;
}

.form-signin-heading {
  margin: 0 0 24px;
  font-size: 24px;
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
}

.form-field {
  margin-bottom: 16px;
}

.form-field label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: 600;
}

.form-control {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--login-control-border);
  border-radius: 4px;
  box-sizing: border-box;
  color: var(--login-text);
  font: inherit;
}

.form-control:focus {
  border-color: var(--login-action);
  box-shadow: 0 0 0 3px var(--login-focus-ring);
  outline: none;
}

.btn {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--login-action);
  border-radius: 4px;
  background: var(--login-action);
  color: var(--login-panel-bg);
  cursor: pointer;
  font: inherit;
  font-weight: 600;
}

.btn:hover,
.btn:focus {
  background: var(--login-action-hover);
  border-color: var(--login-action-hover);
}

.btn:focus {
  box-shadow: 0 0 0 3px var(--login-focus-ring);
  outline: none;
}

.alert {
  margin: 0 0 16px;
  padding: 10px 12px;
  border: 1px solid var(--login-muted-border);
  border-radius: 4px;
  background: var(--login-bg);
  color: var(--login-text);
  font-size: 14px;
}

.alert-danger {
  border-color: var(--login-danger);
  background: var(--login-panel-bg);
  color: var(--login-danger);
}

.alert i {
  display: none;
}