* { box-sizing: border-box; margin: 0; padding: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
body { background-color: #f4f6f9; display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 20px; }
.sso-container { background: #ffffff; border-radius: 8px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); width: 100%; max-width: 400px; padding: 30px; }
.sso-header { text-align: center; margin-bottom: 24px; }
.sso-header h2 { color: #1a202c; font-size: 22px; }
.sso-header p { color: #718096; font-size: 14px; margin-top: 4px; }
.form-group { margin-bottom: 16px; text-align: left; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: #4a5568; margin-bottom: 6px; }
.form-group input, .form-group select { width: 100%; padding: 10px 12px; border: 1px solid #cbd5e0; border-radius: 6px; font-size: 14px; }
button { width: 100%; padding: 12px; background-color: #2b6cb0; color: white; border: none; border-radius: 6px; font-size: 15px; font-weight: 600; cursor: pointer; margin-top: 8px; }
button:hover { background-color: #2c5282; }
.secondary-btn { background-color: #e2e8f0; color: #2d3748; margin-top: 12px; }
.secondary-btn:hover { background-color: #cbd5e0; }
.hidden { display: none !important; }
.alert { padding: 10px 12px; border-radius: 6px; font-size: 13px; margin-bottom: 16px; text-align: center; }
.alert.error { background-color: #fed7d7; color: #9b2c2c; }
.alert.success { background-color: #c6f6d5; color: #22543d; }
#qr-code-container { text-align: center; margin: 16px 0; }