:root {
  --bc-bg: #f5f7fb;
  --bc-primary: #16457a;
  --bc-text: #172033;
  --bc-muted: #6c788c;
  --bc-border: #dbe3ef;
}

body.auth-body {
  min-height: 100vh;
  margin: 0;
  background:
    linear-gradient(180deg, rgba(22, 69, 122, 0.08), rgba(22, 69, 122, 0)),
    var(--bc-bg);
  color: var(--bc-text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

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

.auth-card {
  width: 100%;
  max-width: 420px;
  padding: 28px;
  border: 1px solid var(--bc-border);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 44px rgba(15, 39, 66, 0.12);
}

.auth-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}

.auth-logo {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: var(--bc-primary);
  color: #fff;
  font-weight: 800;
}

.auth-title {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
}

.auth-subtitle {
  margin: 4px 0 0;
  color: var(--bc-muted);
  font-size: 13px;
}

.demo-note {
  margin-top: 18px;
  padding: 12px;
  border-radius: 8px;
  background: #f1f5fb;
  color: var(--bc-muted);
  font-size: 13px;
}

.required-mark {
  color: #bd2f3a;
  font-weight: 800;
}