* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #f5f5f5;
  color: #333;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

#app {
  width: 100%;
  max-width: 400px;
  padding: 1rem;
}

.auth-card {
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  padding: 2rem;
}

.auth-card h1 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.form-field {
  margin-bottom: 1rem;
}

.form-field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
  color: #555;
}

.form-field input {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 0.95rem;
}

.form-field input:focus {
  outline: none;
  border-color: #4a90d9;
  box-shadow: 0 0 0 2px rgba(74, 144, 217, 0.15);
}

.btn {
  display: block;
  width: 100%;
  padding: 0.7rem;
  background: #4a90d9;
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  margin-top: 1rem;
}

.btn:hover { background: #3a7bc8; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

.error {
  background: #fef2f2;
  color: #b91c1c;
  padding: 0.6rem 0.75rem;
  border-radius: 4px;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.success {
  background: #f0fdf4;
  color: #166534;
  padding: 0.6rem 0.75rem;
  border-radius: 4px;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.links {
  margin-top: 1.25rem;
  text-align: center;
  font-size: 0.85rem;
}

.links a {
  color: #4a90d9;
  text-decoration: none;
}

.links a:hover { text-decoration: underline; }

.links span {
  color: #999;
  margin: 0 0.5rem;
}