:root {
  color-scheme: light dark;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0f172a;
  color: #e2e8f0;
}

.card {
  width: 100%;
  max-width: 360px;
  padding: 2rem;
  border-radius: 12px;
  background: #1e293b;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

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

label {
  display: block;
  font-size: 0.85rem;
  margin: 0.75rem 0 0.25rem;
  color: #94a3b8;
}

input {
  width: 100%;
  padding: 0.6rem 0.7rem;
  border-radius: 8px;
  border: 1px solid #334155;
  background: #0f172a;
  color: #e2e8f0;
  font-size: 0.95rem;
  box-sizing: border-box;
}

button {
  margin-top: 1.25rem;
  width: 100%;
  padding: 0.65rem;
  border: none;
  border-radius: 8px;
  background: #6366f1;
  color: white;
  font-size: 0.95rem;
  cursor: pointer;
}

button:hover {
  background: #4f46e5;
}

button.secondary {
  margin-top: 0.5rem;
  background: transparent;
  border: 1px solid #334155;
  color: #94a3b8;
}

button.secondary:hover {
  background: #334155;
}

.error {
  margin-top: 0.75rem;
  color: #f87171;
  font-size: 0.85rem;
  min-height: 1em;
}

.mode-toggle {
  margin-top: 1rem;
  font-size: 0.85rem;
  text-align: center;
  color: #94a3b8;
}

.mode-toggle a {
  color: #818cf8;
  cursor: pointer;
}

.user-email {
  font-weight: 600;
  color: #a5b4fc;
}