feat(auth): implement multi-step authentication flow

This commit introduces a complete user authentication system, replacing the previous placeholder login page. The new flow includes signup, login, and OTP verification, all integrated with backend webhooks.

- Adds `AuthPage` to manage the view state between login, signup, and OTP forms.
- Implements `LoginForm` with support for both email and WhatsApp credentials.
- Implements `SignupForm` with password strength and confirmation validation.
- Adds `OtpForm` for two-factor verification after a successful signup.
- Integrates `axios` for making API calls to the backend webhooks.
- Updates styling with a new background, custom brand colors, and the Poppins font.

BREAKING CHANGE: The `LoginPage` component has been deleted and is replaced by the new `AuthPage` component. Any imports of `LoginPage` must be updated.

adventure-rental-app/src/ForgotPasswordForm.jsx

@@ -0,0 +1,117 @@
+import React, { useState, useCallback } from 'react';
+import axios from 'axios';
+
+const ForgotPasswordForm = ({ showLogin, showReset }) => {
+  const [mode, setMode] = useState('email'); // 'email' or 'whatsapp'
+  const [identifier, setIdentifier] = useState('');
+  const [error, setError] = useState('');
+  const [success, setSuccess] = useState('');
+  const [loading, setLoading] = useState(false);
+  const [emailError, setEmailError] = useState('');
+
+  const validateEmail = (email) => {
+    const regex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
+    return regex.test(email);
+  };
+
+  const handleIdentifierChange = (e) => {
+    let value = e.target.value;
+    if (mode === 'email') {
+      if (!validateEmail(value) && value.length > 0) {
+        setEmailError('Please enter a valid email address.');
+      } else {
+        setEmailError('');
+      }
+    } else {
+      setEmailError('');
+      if (value.startsWith('0')) {
+        value = value.substring(1);
+      }
+      value = value.replace(/[^0-9]/g, '');
+    }
+    setIdentifier(value);
+  };
+
+  const handleModeChange = useCallback((newMode) => {
+    setMode(newMode);
+    setIdentifier('');
+    setEmailError('');
+    setError('');
+    setSuccess('');
+  }, []);
+
+  const handleSubmit = async (e) => {
+    e.preventDefault();
+    if (mode === 'email' && emailError) {
+      setError('Please fix the errors before submitting.');
+      return;
+    }
+    setLoading(true);
+    setError('');
+    setSuccess('');
+
+    const finalIdentifier = mode === 'whatsapp' ? `62${identifier}` : identifier;
+
+    try {
+      await axios.post('https://api.karyamanswasta.my.id/webhook/forgot-password/adventure', { identifier: finalIdentifier });
+      setSuccess('Password reset link sent. Please check your email/WhatsApp.');
+      // showReset(); // You might want to navigate to reset password form after a delay
+    } catch (err) {
+      setError(err.response?.data?.message || 'Failed to send reset link.');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const isFormValid = identifier.trim() !== '' && !emailError;
+
+  return (
+    <>
+      <div className="text-center">
+        <h2 className="text-3xl font-bold text-white">Forgot Password</h2>
+        <p className="mt-2 text-sm text-gray-300">Enter your email or WhatsApp to reset</p>
+      </div>
+      <div className="flex space-x-2 mt-6">
+        <button onClick={() => handleModeChange('email')} className={`w-1/2 py-2 text-sm font-medium rounded-md focus:outline-none transition-colors duration-300 ${mode === 'email' ? 'bg-brand-orange text-white' : 'bg-white/20 text-white hover:bg-white/30'}`}>
+          Email
+        </button>
+        <button onClick={() => handleModeChange('whatsapp')} className={`w-1/2 py-2 text-sm font-medium rounded-md focus:outline-none transition-colors duration-300 ${mode === 'whatsapp' ? 'bg-brand-orange text-white' : 'bg-white/20 text-white hover:bg-white/30'}`}>
+          WhatsApp
+        </button>
+      </div>
+      <form className="mt-8 space-y-6" onSubmit={handleSubmit}>
+        <div>
+          <div className="relative">
+            {mode === 'whatsapp' && (
+              <div className="absolute inset-y-0 left-0 flex items-center pl-3 pointer-events-none"><span className="text-white font-medium sm:text-sm">+62</span><span className="text-gray-400 mx-2">|</span></div>
+            )}
+            <input
+              name="identifier"
+              type={mode === 'email' ? 'email' : 'tel'}
+              required
+              className={`appearance-none relative block w-full px-4 py-3 border ${emailError ? 'border-red-500' : 'border-gray-500'} bg-white/20 text-white placeholder-gray-300 focus:outline-none focus:ring-brand-orange focus:border-brand-orange sm:text-sm rounded-md ${mode === 'whatsapp' ? 'pl-16' : ''}`}
+              placeholder={mode === 'email' ? 'Enter your email' : '812...'}
+              value={identifier}
+              onChange={handleIdentifierChange}
+            />
+          </div>
+          {emailError && <p className="mt-2 text-xs text-red-400">{emailError}</p>}
+        </div>
+        {error && <p className="text-sm text-red-300 text-center">{error}</p>}
+        {success && <p className="text-sm text-green-400 text-center">{success}</p>}
+        <div>
+          <button type="submit" disabled={loading || !isFormValid} className="group relative w-full flex justify-center py-3 px-4 border border-transparent text-sm font-bold rounded-md text-white bg-brand-orange hover:bg-opacity-90 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-brand-orange focus:ring-offset-gray-800 disabled:opacity-60">
+            {loading ? 'Sending...' : 'Reset Password'}
+          </button>
+        </div>
+        <p className="text-center text-sm text-gray-300">
+          <button type="button" onClick={showLogin} className="font-medium text-brand-orange hover:underline">
+            Back to Login
+          </button>
+        </p>
+      </form>
+    </>
+  );
+};
+
+export default ForgotPasswordForm;