.fc-chat-login{flex:1;display:flex;align-items:center;justify-content:center;padding:40px 20px;background:#f5f5f5;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;overscroll-behavior:contain;scroll-behavior:smooth;min-height:0}.fc-login-container{text-align:center;max-width:400px;width:100%}.fc-login-icon{width:clamp(60px, 12vw, 100px);height:clamp(60px, 12vw, 100px);margin:0 auto 20px;color:#25D366;max-width:100px;max-height:100px}.fc-login-icon svg{width:100%;height:100%;display:block}.fc-login-title{font-size:20px;font-weight:600;color:#333;margin:0 0 8px}.fc-login-desc{font-size:14px;color:#666;margin:0 0 24px}.fc-login-methods{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin:0 0 24px;width:100%}@media (max-width:480px){.fc-login-methods{grid-template-columns:1fr}}.fc-login-method{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:20px;background:#fff;border:2px solid #e0e0e0;border-radius:12px;cursor:pointer;transition:all 0.2s;text-align:center;min-height:140px}.fc-login-method:hover{border-color:#25D366;background:#f0fdf4;transform:translateY(-2px);box-shadow:0 4px 12px rgb(37 211 102 / .15)}.fc-login-method-icon{width:clamp(50px, 10vw, 60px);height:clamp(50px, 10vw, 60px);min-width:50px;min-height:50px;max-width:60px;max-height:60px;display:flex;align-items:center;justify-content:center;background:#f0fdf4;border-radius:12px;color:#25D366;flex-shrink:0}.fc-login-method-icon svg{width:clamp(24px, 5vw, 32px);height:clamp(24px, 5vw, 32px);max-width:32px;max-height:32px}.fc-login-method-content{width:100%;display:flex;flex-direction:column;align-items:center;gap:4px}.fc-login-method-title{font-size:15px;font-weight:600;color:#333;margin:0;text-align:center}.fc-login-method-desc{font-size:12px;color:#666;margin:0;text-align:center;line-height:1.4}.fc-qr-login-area{margin:24px 0 0}.fc-qr-container{background:#fff;border-radius:12px;padding:20px;margin:0 0 20px;box-shadow:0 2px 8px rgb(0 0 0 / .1);min-height:250px;display:flex;align-items:center;justify-content:center}.fc-qr-container img{max-width:100%;height:auto;border-radius:8px}.fc-qr-loading{color:#999;font-size:14px}.fc-login-refresh{padding:10px 24px;background:#25D366;color:#fff;border:none;border-radius:20px;font-size:14px;font-weight:500;cursor:pointer;transition:background 0.2s;width:100%}.fc-login-refresh:hover{background:#20BA5A}.fc-phone-login-area{margin:24px 0 0}.fc-phone-input-group{display:flex;gap:8px;margin:0 0 16px}.fc-phone-country-code{flex:0 0 120px;padding:12px;border:2px solid #e0e0e0;border-radius:8px;font-size:14px;background:#fff;cursor:pointer;transition:border-color 0.2s}.fc-phone-country-code:focus{outline:none;border-color:#25D366}.fc-phone-number{flex:1;padding:12px;border:2px solid #e0e0e0;border-radius:8px;font-size:14px;background:#fff;transition:border-color 0.2s}.fc-phone-number:focus{outline:none;border-color:#25D366}.fc-phone-verify-group{margin:16px 0 0;display:flex;flex-direction:column;gap:12px}.fc-phone-verify-code{padding:12px;border:2px solid #e0e0e0;border-radius:8px;font-size:16px;text-align:center;letter-spacing:8px;background:#fff;transition:border-color 0.2s}.fc-phone-verify-code:focus{outline:none;border-color:#25D366}.fc-login-submit{padding:12px 24px;background:#25D366;color:#fff;border:none;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;transition:background 0.2s;width:100%}.fc-login-submit:hover{background:#20BA5A}.fc-login-submit:disabled{background:#ccc;cursor:not-allowed}