```blade
@extends('layouts.app')

@section('content')
<div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-6">
    <div class="bg-white overflow-hidden shadow sm:rounded-lg">
        <div class="px-4 py-5 sm:px-6">
            <h3 class="text-xl leading-6 font-semibold text-gray-900">
                Edit Activities Organised
            </h3>
        </div>

        <div class="px-4 py-5 sm:p-6">
            @if ($errors->any())
            <div class="bg-red-100 border border-red-400 text-red-700 px-4 py-3 rounded mb-4">
                <ul>
                    @foreach ($errors->all() as $error)
                    <li>{{ $error }}</li>
                    @endforeach
                </ul>
            </div>
            @endif

            <form action="{{ request()->is('admin/*') ? route('admin.ActivitiesOrganised.update', $response->id) : (request()->is('coordinator/*') ? route('coordinator.ActivitiesOrganised.update', $response->id) : route('faculty.ActivitiesOrganised.update', $response->id)) }}" method="POST" enctype="multipart/form-data">
                @csrf
                @method('PUT')

                <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
                    <!-- Title -->
                    <div>
                        <label for="title" class="block text-sm font-medium text-gray-700">Title</label>
                        <input type="text" name="title" id="title" value="{{ old('title', $response->title) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>
                    </div>

                    <!-- Resource Person Name -->
                    <div>
                        <label for="resource_person_name" class="block text-sm font-medium text-gray-700">Resource Person Name</label>
                        <input type="text" name="resource_person_name" id="resource_person_name" value="{{ old('resource_person_name', $response->resource_person_name) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>
                    </div>

                    <!-- Resource Person Organization -->
                    <div>
                        <label for="resource_person_organization" class="block text-sm font-medium text-gray-700">Resource Person Organization</label>
                        <input type="text" name="resource_person_organization" id="resource_person_organization" value="{{ old('resource_person_organization', $response->resource_person_organization) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>
                    </div>

                    <!-- Target Audience -->
                    <div>
                        <label for="target_audience" class="block text-sm font-medium text-gray-700">Target Audience</label>
                        <input type="text" name="target_audience" id="target_audience" value="{{ old('target_audience', $response->target_audience) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>
                    </div>

                    <!-- Number of Participants -->
                    <div>
                        <label for="number_of_participants" class="block text-sm font-medium text-gray-700">Number of Participants</label>
                        <input type="number" name="number_of_participants" id="number_of_participants" value="{{ old('number_of_participants', $response->number_of_participants) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>
                    </div>

                    <!-- Department -->
                    <div>
                        <label for="department" class="block text-sm font-medium text-gray-700">Department</label>
                        <input type="text" id="department" value="{{ $response->department->name ?? 'Unknown' }}" class="mt-1 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md bg-gray-100" disabled>
                    </div>

                    <!-- Faculty -->
                    <div>
                        <label for="faculty" class="block text-sm font-medium text-gray-700">Faculty</label>
                        <input type="text" id="faculty" value="{{ $response->user->name ?? 'Unknown' }}" class="mt-1 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md bg-gray-100" disabled>
                    </div>

                    <!-- Venue -->
                    <div>
                        <label for="venue" class="block text-sm font-medium text-gray-700">Venue</label>
                        <input type="text" name="venue" id="venue" value="{{ old('venue', $response->venue) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>
                    </div>

                    <!-- Start Date -->
                    <div>
                        <label for="start_date" class="block text-sm font-medium text-gray-700">Start Date</label>
                        <input type="date" name="start_date" id="start_date" value="{{ old('start_date', \Carbon\Carbon::parse($response->start_date)->format('Y-m-d')) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>
                    </div>

                    <!-- Start Time -->
                    <div>
                        <label for="start_time" class="block text-sm font-medium text-gray-700">Start Time</label>
                        <input type="time" name="start_time" id="start_time" value="{{ old('start_time', \Carbon\Carbon::parse($response->start_date)->format('H:i')) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>
                    </div>

                    <!-- End Date -->
                    <div>
                        <label for="end_date" class="block text-sm font-medium text-gray-700">End Date</label>
                        <input type="date" name="end_date" id="end_date" value="{{ old('end_date', \Carbon\Carbon::parse($response->end_date)->format('Y-m-d')) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>
                    </div>

                    <!-- End Time -->
                    <div>
                        <label for="end_time" class="block text-sm font-medium text-gray-700">End Time</label>
                        <input type="time" name="end_time" id="end_time" value="{{ old('end_time', \Carbon\Carbon::parse($response->end_date)->format('H:i')) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>
                    </div>

                    <!-- Number of Days -->
                    <div>
                        <label for="num_days" class="block text-sm font-medium text-gray-700">Number of Days</label>
                        <input type="number" name="num_days" id="num_days" value="{{ old('num_days', $response->num_days) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>
                    </div>

                    <!-- Activity Type -->
                    <div>
                        <label for="activity_type" class="block text-sm font-medium text-gray-700">Select Activity Type</label>
                        <select name="activity_type" id="activity_type" class="block w-full mt-1 border-gray-300 rounded-md shadow-sm focus:ring-indigo-500 focus:border-indigo-500 sm:text-sm" required>
                            <option value="">Select</option>
                            @if(isset($dropdowns['activity_types']) && is_array($dropdowns['activity_types']))
                            @foreach($dropdowns['activity_types'] as $key => $label)
                            <option value="{{ $key }}" {{ old('activity_type', $response->activity_type ?? '') == $key ? 'selected' : '' }}>{{ $label }}</option>
                            @endforeach
                            @endif
                        </select>
                    </div>

                    <!-- Category -->
                    <div>
                        <label for="category" class="block text-sm font-medium text-gray-700">Select Category</label>
                        <select name="category" id="category" class="block w-full mt-1 border-gray-300 rounded-md shadow-sm focus:ring-indigo-500 focus:border-indigo-500 sm:text-sm" required>
                            <option value="">Select</option>
                            @if(isset($dropdowns['categories']) && is_array($dropdowns['categories']))
                            @foreach($dropdowns['categories'] as $key => $label)
                            <option value="{{ $key }}" {{ old('category', $response->category ?? '') == $key ? 'selected' : '' }}>{{ $label }}</option>
                            @endforeach
                            @endif
                        </select>
                    </div>

                    <!-- Level -->
                    <div>
                        <label for="level" class="block text-sm font-medium text-gray-700">Select Level</label>
                        <select name="level" id="level" class="block w-full mt-1 border-gray-300 rounded-md shadow-sm focus:ring-indigo-500 focus:border-indigo-500 sm:text-sm" required>
                            <option value="">Select</option>
                            @if(isset($dropdowns['levels']) && is_array($dropdowns['levels']))
                            @foreach($dropdowns['levels'] as $key => $label)
                            <option value="{{ $key }}" {{ old('level', $response->level ?? '') == $key ? 'selected' : '' }}>{{ $label }}</option>
                            @endforeach
                            @endif
                        </select>
                    </div>

                    <!-- Objective -->
                    <div class="col-span-1 md:col-span-2">
                        <label for="objective" class="block text-sm font-medium text-gray-700">Objective</label>
                        <textarea name="objective" id="objective" rows="3" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>{{ old('objective', $response->objective) }}</textarea>
                    </div>

                    <!-- Outcomes -->
                    <div class="col-span-1 md:col-span-2">
                        <label for="outcomes" class="block text-sm font-medium text-gray-700">Outcomes</label>
                        <textarea name="outcomes" id="outcomes" rows="3" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>{{ old('outcomes', $response->outcomes) }}</textarea>
                    </div>

                    <!-- Proof -->
                    <div class="col-span-1 md:col-span-2">
                        <label for="proof" class="block text-sm font-medium text-gray-700">Proof</label>
                        @if ($response->proof)
                        <div class="mb-2">
                            <span class="text-sm text-gray-600">Current file:</span>
                            <a href="{{ asset('storage/' . $response->proof) }}" target="_blank" class="ml-2 text-blue-600 hover:text-blue-800">View</a>
                        </div>
                        @endif
                        <input type="file" name="proof" id="proof" class="mt-1 block w-full text-sm text-gray-500
                            file:mr-4 file:py-2 file:px-4
                            file:rounded-full file:border-0
                            file:text-sm file:font-semibold
                            file:bg-blue-50 file:text-blue-700
                            hover:file:bg-blue-100">
                        <p class="mt-1 text-sm text-gray-500">Upload new proof (JPG, JPEG, PNG, PDF, DOC, DOCX, ZIP)</p>
                    </div>
                </div>

                <div class="mt-6 flex items-center justify-end">
                    <a href="{{ request()->is('admin/*') ? route('admin.ActivitiesOrganisedResponses') : (request()->is('coordinator/*') ? route('coordinator.ActivitiesOrganisedResponses') : route('faculty.ActivitiesOrganisedResponses')) }}" class="bg-gray-200 py-2 px-4 border border-gray-300 rounded-md shadow-sm text-sm font-medium text-gray-700 hover:bg-gray-300 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-gray-500 mr-3">
                        Cancel
                    </a>
                    <button type="submit" class="inline-flex justify-center py-2 px-4 border border-transparent text-sm font-medium rounded-md text-white bg-black">
                        Update
                    </button>
                </div>
            </form>
        </div>
    </div>
</div>
@endsection

@section('scripts')
<script>
    // Auto-calculate number of days when start and end dates change
    document.addEventListener('DOMContentLoaded', function() {
        const startDateField = document.getElementById('start_date');
        const endDateField = document.getElementById('end_date');
        const numDaysField = document.getElementById('num_days');

        function calculateDays() {
            if (startDateField.value && endDateField.value) {
                const startDate = new Date(startDateField.value);
                const endDate = new Date(endDateField.value);

                // Calculate difference in days
                const diffTime = Math.abs(endDate - startDate);
                const diffDays = Math.ceil(diffTime / (1000 * 60 * 60 * 24)) + 1; // +1 to include both start and end days

                if (diffDays > 0) {
                    numDaysField.value = diffDays;
                }
            }
        }

        startDateField.addEventListener('change', calculateDays);
        endDateField.addEventListener('change', calculateDays);
    });
</script>
@endsection
```