:root {
  --color-bg: #0f172a;
  --color-surface: #1e293b;
  --color-text: #f1f5f9;
  --color-muted: #94a3b8;
  --color-primary: #2563eb;
  --color-primary-contrast: #ffffff;
  --color-error: #f87171;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
}

.login-screen {
  width: min(90vw, 24rem);
  padding: 2.5rem 2rem;
  background: var(--color-surface);
  border-radius: 1rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.login-screen__logo {
  border-radius: 0.5rem;
}

.login-screen h1 {
  font-size: 1.25rem;
  margin: 0;
}

.login-screen__hint {
  color: var(--color-muted);
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
}

.login-screen__button {
  display: inline-block;
  padding: 0.75rem 2rem;
  background: var(--color-primary);
  color: var(--color-primary-contrast);
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 600;
}

.login-screen__button:hover {
  filter: brightness(1.1);
}

.login-screen__error {
  color: var(--color-error);
  font-size: 0.85rem;
}

#nc-root {
  width: 100%;
}