@extends('layouts.app')
@section('title', 'Signature Request')

@section('content')
<!-- QUILL EDITOR STYLES -->
<link href="https://cdn.quilljs.com/1.3.6/quill.snow.css" rel="stylesheet">
<style>
    /* Customizing Quill to match your theme */
    .ql-toolbar.ql-snow {
        border-color: #E2E8F0;
        background-color: #F8FAFC;
        border-radius: 8px 8px 0 0;
    }
    .ql-container.ql-snow {
        border-color: #E2E8F0;
        border-radius: 0 0 8px 8px;
        /* min-height: 250px; */
        min-height: 50px;
        font-family: inherit;
    }
    .dark .ql-toolbar.ql-snow {
        border-color: #313d4a;
        background-color: #24303f;
    }
    .dark .ql-container.ql-snow {
        border-color: #313d4a;
        background-color: #1a222c;
        color: #fff;
    }
    .dark .ql-snow .ql-stroke { stroke: #d1d5db; }
    .dark .ql-snow .ql-fill { fill: #d1d5db; }
    .dark .ql-snow .ql-picker { color: #d1d5db; }

    /* CUSTOM TOGGLE SWITCH STYLES */
    .switch {
        position: relative;
        display: inline-block;
        width: 44px;
        height: 22px;
    }
    .switch input { 
        opacity: 0;
        width: 0;
        height: 0;
    }
    .slider {
        position: absolute;
        cursor: pointer;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: #ccc;
        transition: .4s;
        border-radius: 34px;
    }
    .slider:before {
        position: absolute;
        content: "";
        height: 16px;
        width: 16px;
        left: 3px;
        bottom: 3px;
        background-color: white;
        transition: .4s;
        border-radius: 50%;
    }
    input:checked + .slider {
        background-color: #1a7a6e; /* Primary color */
    }
    input:focus + .slider {
        box-shadow: 0 0 1px #1a7a6e;
    }
    input:checked + .slider:before {
        transform: translateX(22px);
    }

    /* AUTOCOMPLETE STYLES */
    .autocomplete-results {
        position: absolute;
        z-index: 10000;
        background: white;
        border: 1px solid #E2E8F0;
        width: 100%;
        max-height: 200px;
        overflow-y: auto;
        border-radius: 8px;
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        margin-top: 2px;
    }
    .dark .autocomplete-results {
        background: #1a222c;
        border-color: #313d4a;
    }
    .autocomplete-item {
        padding: 10px 15px;
        cursor: pointer;
        font-size: 13px;
        border-bottom: 1px solid #F1F5F9;
    }
    .dark .autocomplete-item {
        border-bottom-color: #313d4a;
    }
    .autocomplete-item:hover {
        background-color: #F8FAFC;
    }
    .dark .autocomplete-item:hover {
        background-color: #24303f;
    }
    .autocomplete-item .name { font-weight: 600; color: #1e293b; }
    .dark .autocomplete-item .name { color: #e2e8f0; }
    .autocomplete-item .email { font-size: 11px; color: #64748b; }
</style>

<div class="mx-auto max-w-screen-2xl p-4 md:p-6 2xl:p-10 bg-gray-50 dark:bg-boxdark-2 min-h-screen">
    
    <!-- Header -->
    <div class="mb-6 flex flex-col gap-3 sm:flex-row sm:items-center sm:justify-between">
        <div>
            <h1 class="text-2xl font-semibold text-gray-900 dark:text-white">Request a Signature</h1>
            @if($templates->isNotEmpty())
            <p class="text-sm text-gray-500 mt-1">Package ID: {{ $package_id }}</p>
            @endif
        </div>
        <!-- UPDATED: HOW IT WORKS BUTTON -->
        <button type="button" onclick="openOffcanvas('how-it-works')" class="inline-flex items-center gap-2 px-4 py-2 bg-white dark:bg-meta-4 text-gray-700 dark:text-white border border-stroke dark:border-strokedark rounded-lg hover:bg-gray-100 dark:hover:bg-opacity-80 transition-all text-sm font-medium shadow-sm">
            <i class="bi bi-info-circle-fill text-primary"></i> How it works
        </button>
    </div>

    @if($templates->isEmpty())
        <div class="rounded-sm border border-stroke bg-white py-20 px-4 text-center shadow-default dark:border-strokedark dark:bg-boxdark mb-5 pb-5">
             <div class="empty mt-4 mb-5 text-center p-4 text-gray-500">No templates yet — click "Add Template" to get started.</div>
            
            <a href="/tmplts/create" class="bg-brand-500 inline-flex items-center justify-center gap-2 rounded-lg py-3 text-sm font-medium text-white p-2">
                 <svg xmlns="http://www.w3.org/2000/svg" width="15" height="15" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                    <line x1="12" y1="5" x2="12" y2="19"></line>
                    <line x1="5" y1="12" x2="19" y2="12"></line>
                </svg>Add Template
            </a>
        </div>
    @else

    <!-- MAIN FORM START -->
    <form id="master-signature-form" method="post" action="{{ route('save_signature_request') }}">
        @csrf
        <input type="hidden" name="txt_package_id" value="{{ $package_id }}">

        <div class="grid grid-cols-12 gap-6">
            
            <!-- LEFT COLUMN: DOCUMENT SELECTION -->
            <div class="col-span-12 lg:col-span-8">
                <div class="bg-white dark:bg-boxdark rounded-lg border border-stroke dark:border-strokedark shadow-sm">
                    <div class="p-6 border-b border-stroke dark:border-strokedark flex justify-between items-center">
                        <div class="flex items-center gap-4">
                             <h2 class="text-lg font-semibold text-gray-900 dark:text-white flex items-center gap-2">
                                Select Documents
                                <!-- DOCUMENT STEP CHECKMARK -->
                                <span id="check-icon-docs" class="hidden text-meta-3">
                                    <svg class="w-5 h-5 fill-current" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg">
                                        <path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zm3.707-9.293a1 1 0 00-1.414-1.414L9 10.586 7.707 9.293a1 1 0 00-1.414 1.414l2 2a1 1 0 001.414 0l4-4z" clip-rule="evenodd"></path>
                                    </svg>
                                </span>
                             </h2>
                        </div>
                        <div class="relative w-64">
                            <input type="text" id="templateSearch" placeholder="Search..." class="w-full pl-10 pr-4 py-2 border border-stroke rounded-lg outline-none focus:border-primary dark:bg-meta-4">
                            <i class="bi bi-search absolute left-3 top-1/2 -translate-y-1/2 text-gray-400"></i>
                        </div>
                    </div>
                    
                    <div class="p-6 space-y-3 overflow-y-auto max-h-[600px]">
                        @foreach($templates as $row)
                        <div class="document-card group relative flex items-center gap-4 p-4 border border-stroke dark:border-strokedark rounded-lg hover:bg-gray-50 dark:hover:bg-meta-4 transition-all">
                            <input type="checkbox" name="chk_template[]" value="{{ $row->template_id }}" 
                                class="template-checkbox w-5 h-5 text-primary rounded border-stroke"
                                data-title="{{ $row->template_title }}"
                                data-signers-json="{{ $row->template_json }}"
                                data-img="pdf_img/{{ $row->template_file }}_1.jpg">
                            
                            <div class="flex-1 cursor-pointer" onclick="this.parentElement.querySelector('.template-checkbox').click()">
                                <div class="flex items-center">
                                    <i class="bi bi-file-earmark-pdf text-danger text-xl"></i>
                                    <span class="font-medium text-gray-900 dark:text-white template-title-cell ml-2">{{ $row->template_title }}</span>
                                </div>
                                <div class="flex items-center gap-1 mt-1 text-xs text-gray-500">
                                    <span><i class="bi bi-people"></i> {{ $row->template_no_of_signers }} signers</span>
                                </div>
                            </div>
                            
                            <!-- INDIVIDUAL PREVIEW BUTTON -->
                            <button type="button" 
                                    onclick="openPreview('{{ asset('templates/' . $row->template_file) }}')" 
                                    class="inline-flex items-center justify-center w-10 h-10 text-gray-400 hover:text-primary hover:bg-primary/10 rounded-full transition-colors" 
                                    title="View Document">
                                <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" class="w-6 h-6">
                                    <path stroke-linecap="round" stroke-linejoin="round" d="M2.036 12.322a1.012 1.012 0 0 1 0-.644C3.483 8.612 7.957 4.5 12 4.5c4.043 0 8.517 4.112 9.963 7.178.07.142.07.307 0 .449-1.446 3.066-5.92 7.178-9.963 7.178-4.043 0-8.517-4.112-9.963-7.178Z" />
                                    <path stroke-linecap="round" stroke-linejoin="round" d="M15 12a3 3 0 1 1-6 0 3 3 0 0 1 6 0" />
                                </svg>
                            </button>
                        </div>
                        @endforeach
                    </div>
                    <div class="p-4 bg-gray-50 dark:bg-meta-4/20 text-center">
                        <p class="text-xs text-gray-500"><span id="doc-count-badge">0</span> templates selected</p>
                    </div>
                </div>
            </div>

            <!-- RIGHT COLUMN: CONFIGURATION SUMMARY -->
            <div class="col-span-12 lg:col-span-4 space-y-6">
                
                <!-- Preferences Card -->
                <div class="bg-white dark:bg-boxdark rounded-lg border border-stroke dark:border-strokedark p-6 shadow-sm">
                    <div class="flex items-center justify-between mb-4">
                        <h3 class="font-semibold text-gray-900 dark:text-white flex items-center gap-2">
                            Preferences
                            <span id="check-icon-preferences" class="hidden text-meta-3">
                                <svg class="w-5 h-5 fill-current" viewBox="0 0 20 20"><path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zm3.707-9.293a1 1 0 00-1.414-1.414L9 10.586 7.707 9.293a1 1 0 00-1.414 1.414l2 2a1 1 0 001.414 0l4-4z" clip-rule="evenodd"></path></svg>
                            </span>
                        </h3>
                        <button type="button" onclick="openOffcanvas('preferences')" class="text-sm text-primary hover:underline font-medium">Configure</button>
                    </div>
                    <div id="summary-preferences" class="text-sm text-gray-500 italic">Default settings applied</div>
                </div>

                <!-- Signing Mode Card -->
                <div class="bg-white dark:bg-boxdark rounded-lg border border-stroke dark:border-strokedark p-6 shadow-sm">
                    <div class="flex items-center justify-between mb-4">
                        <h3 class="font-semibold text-gray-900 dark:text-white flex items-center gap-2">
                            Signing Mode
                            <span id="check-icon-mode" class="hidden text-meta-3">
                                <svg class="w-5 h-5 fill-current" viewBox="0 0 20 20"><path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zm3.707-9.293a1 1 0 00-1.414-1.414L9 10.586 7.707 9.293a1 1 0 00-1.414 1.414l2 2a1 1 0 001.414 0l4-4z" clip-rule="evenodd"></path></svg>
                            </span>
                        </h3>
                        <button type="button" onclick="openOffcanvas('signing-mode')" class="text-sm text-primary hover:underline font-medium">Configure</button>
                    </div>
                    <div id="summary-mode" class="text-sm text-gray-500 italic">No mode selected</div>
                </div>

                <!-- NEW: Prefill Card -->
                <div class="bg-white dark:bg-boxdark rounded-lg border border-stroke dark:border-strokedark p-6 shadow-sm">
                    <div class="flex items-center justify-between mb-4">
                        <h3 class="font-semibold text-gray-900 dark:text-white flex items-center gap-2">
                            Prefill Fields
                            <span id="check-icon-prefill" class="hidden text-meta-3">
                                <svg class="w-5 h-5 fill-current" viewBox="0 0 20 20"><path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zm3.707-9.293a1 1 0 00-1.414-1.414L9 10.586 7.707 9.293a1 1 0 00-1.414 1.414l2 2a1 1 0 001.414 0l4-4z" clip-rule="evenodd"></path></svg>
                            </span>
                        </h3>
                        <button type="button" id="btn-config-prefill" onclick="openOffcanvas('prefill')" class="text-sm text-primary hover:underline font-medium opacity-50 cursor-not-allowed" disabled>Add Values</button>
                    </div>
                    <div id="summary-prefill" class="text-sm text-gray-500 italic">Select documents first</div>
                </div>

                <!-- Signers Card -->
                <div class="bg-white dark:bg-boxdark rounded-lg border border-stroke dark:border-strokedark p-6 shadow-sm">
                    <div class="flex items-center justify-between mb-4">
                        <h3 class="font-semibold text-gray-900 dark:text-white flex items-center gap-2">
                            Signers
                            <span id="check-icon-signers" class="hidden text-meta-3">
                                <svg class="w-5 h-5 fill-current" viewBox="0 0 20 20"><path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zm3.707-9.293a1 1 0 00-1.414-1.414L9 10.586 7.707 9.293a1 1 0 00-1.414 1.414l2 2a1 1 0 001.414 0l4-4z" clip-rule="evenodd"></path></svg>
                            </span>
                        </h3>
                        <button type="button" id="btn-config-signers" onclick="openOffcanvas('signers')" class="text-sm text-primary hover:underline font-medium opacity-50 cursor-not-allowed" disabled>Add Details</button>
                    </div>
                    <div id="summary-signers" class="space-y-2 text-sm text-gray-500 italic">Select documents first</div>
                </div>

                <!-- Message Card -->
                <div class="bg-white dark:bg-boxdark rounded-lg border border-stroke dark:border-strokedark p-6 shadow-sm">
                    <div class="flex items-center justify-between mb-4">
                        <h3 class="font-semibold text-gray-900 dark:text-white flex items-center gap-2">
                            Email Message
                            <span id="check-icon-message" class="hidden text-meta-3">
                                <svg class="w-5 h-5 fill-current" viewBox="0 0 20 20"><path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zm3.707-9.293a1 1 0 00-1.414-1.414L9 10.586 7.707 9.293a1 1 0 00-1.414 1.414l2 2a1 1 0 001.414 0l4-4z" clip-rule="evenodd"></path></svg>
                            </span>
                        </h3>
                        <button type="button" onclick="openOffcanvas('message')" class="text-sm text-primary hover:underline font-medium">Edit Message</button>
                    </div>
                    <div id="summary-message" class="text-sm text-gray-500 italic">Default message will be used</div>
                </div>

                <!-- Action Button -->
                <button type="button" onclick="openOffcanvas('review')" class="w-full bg-brand-500 text-white py-4 rounded-lg font-bold shadow-lg flex items-center justify-center gap-2">
                    <i class="bi bi-send-check"></i> Review & Send
                </button>
            </div>
        </div>

        <!-- OFFCANVAS PANELS -->

        <!-- -1. HOW IT WORKS OFFCANVAS -->
        <div id="how-it-works-offcanvas" class="offcanvas-panel">
            <div class="p-6 border-b border-stroke flex justify-between items-center bg-gray-50 dark:bg-meta-4">
                <h2 class="text-xl font-semibold flex items-center gap-2">
                    <i class="bi bi-info-circle text-primary"></i> How it works
                </h2>
                <button type="button" onclick="closeOffcanvas()" class="text-2xl">&times;</button>
            </div>
            <div class="p-6 space-y-8 overflow-y-auto flex-1">
                <div class="relative pl-8 border-l-2 border-primary/20 space-y-8">
                    <div class="relative">
                        <h4 class="font-bold text-gray-900 dark:text-white">1. Select Documents</h4>
                        <p class="text-sm text-gray-500 mt-1">Browse and select one or multiple templates from the list on the left.</p>
                    </div>
                    <div class="relative">
                        <h4 class="font-bold text-gray-900 dark:text-white">2. Prefill Information</h4>
                        <p class="text-sm text-gray-500 mt-1">If your template contains "Prefill" fields, enter the values now. These will be burned into the document before sending.</p>
                    </div>
                    <div class="relative">
                        <h4 class="font-bold text-gray-900 dark:text-white">3. Configure Preferences & Mode</h4>
                        <p class="text-sm text-gray-500 mt-1">Choose signing order and whether signers are remote or in-person.</p>
                    </div>
                </div>
            </div>
            <div class="p-6 border-t border-stroke bg-white dark:bg-boxdark">
                <button type="button" onclick="closeOffcanvas()" class="w-full bg-primary px-4 py-2 rounded-lg text-sm font-medium">Got it, let's start</button>
            </div>
        </div>

        <!-- 0. PREFERENCES OFFCANVAS -->
        <div id="preferences-offcanvas" class="offcanvas-panel">
            <div class="p-6 border-b border-stroke flex justify-between items-center">
                <h2 class="text-xl font-semibold">Preferences</h2>
                <button type="button" onclick="closeOffcanvas()" class="text-2xl">&times;</button>
            </div>
            <div class="p-6 space-y-6">
                <div class="space-y-4">
                    <div class="flex items-center justify-between p-4 border border-stroke dark:border-strokedark rounded-lg bg-gray-50 dark:bg-meta-4">
                        <div>
                            <div class="font-medium text-gray-900 dark:text-white">Sequential signing</div>
                            <div class="text-xs text-gray-500">Signers must sign in a specific order</div>
                        </div>
                        <label class="switch">
                            <input type="checkbox" name="sequential_signing" id="sequential_signing" value="1">
                            <span class="slider"></span>
                        </label>
                    </div>
                    <div class="flex items-center justify-between p-4 border border-stroke dark:border-strokedark rounded-lg bg-gray-50 dark:bg-meta-4">
                        <div>
                            <div class="font-medium text-gray-900 dark:text-white">Field Visible</div>
                            <div class="text-xs text-gray-500">Make fields visible to all signers</div>
                        </div>
                        <label class="switch">
                            <input type="checkbox" name="field_visible" id="field_visible" value="1">
                            <span class="slider"></span>
                        </label>
                    </div>
                </div>
            </div>
            <div class="p-6 border-t border-stroke mt-auto">
                <button type="button" onclick="savePreferencesSummary(); closeOffcanvas();" class="w-full bg-brand-500 text-white px-4 py-2 rounded-lg text-sm ">Apply Preferences</button>
            </div>
        </div>

        <!-- 1. SIGNING MODE OFFCANVAS -->
        <div id="signing-mode-offcanvas" class="offcanvas-panel">
            <div class="p-6 border-b border-stroke flex justify-between items-center">
                <h2 class="text-xl font-semibold">Signing Mode</h2>
                <button type="button" onclick="closeOffcanvas()" class="text-2xl">&times;</button>
            </div>
            <div class="p-6 space-y-6">
                <label class="block text-sm font-medium text-gray-700 dark:text-white mb-3">How will recipients sign?</label>
                <div class="space-y-3">
                    <label class="flex items-start gap-3 p-4 border border-stroke rounded-lg cursor-pointer hover:border-primary transition-all">
                        <input type="radio" name="choose_mode" value="email" class="mt-1 mode-radio">
                        <div>
                            <div class="font-medium">Remote via Email</div>
                            <div class="text-xs text-gray-500">Send unique links to signers</div>
                        </div>
                    </label>
                    <label class="flex items-start gap-3 p-4 border border-stroke rounded-lg cursor-pointer hover:border-primary transition-all">
                        <input type="radio" name="choose_mode" value="local" class="mt-1 mode-radio">
                        <div>
                            <div class="font-medium">In-Person Signing</div>
                            <div class="text-xs text-gray-500">Sign directly on this device</div>
                        </div>
                    </label>
                </div>
            </div>
            <div class="p-6 border-t border-stroke mt-auto">
                <button type="button" onclick="saveModeSummary(); closeOffcanvas();" class="w-full bg-brand-500 text-white px-4 py-2 rounded-lg text-sm ">Apply Settings</button>
            </div>
        </div>

        <!-- NEW: 2. PREFILL OFFCANVAS -->
        <div id="prefill-offcanvas" class="offcanvas-panel">
            <div class="p-6 border-b border-stroke flex justify-between items-center">
                <h2 class="text-xl font-semibold">Prefill Information</h2>
                <button type="button" onclick="closeOffcanvas()" class="text-2xl">&times;</button>
            </div>
            <div id="prefill-inputs-wrapper" class="p-6 space-y-6 overflow-y-auto flex-1">
                <p class="text-center text-gray-400 py-10">Please select templates on the main page first.</p>
            </div>
            <div class="p-6 border-t border-stroke">
                <button type="button" onclick="savePrefillSummary(); closeOffcanvas();" class="w-full bg-brand-500 text-white px-4 py-2 rounded-lg text-sm ">Save Prefill Values</button>
            </div>
        </div>

        <!-- 3. SIGNERS OFFCANVAS -->
        <div id="signers-offcanvas" class="offcanvas-panel">
            <div class="p-6 border-b border-stroke flex justify-between items-center">
                <h2 class="text-xl font-semibold">Signer Information</h2>
                <button type="button" onclick="closeOffcanvas()" class="text-2xl">&times;</button>
            </div>
            <div id="signer-inputs-wrapper" class="p-6 space-y-6 overflow-y-auto flex-1">
                <p class="text-center text-gray-400 py-10">Please select templates on the main page first.</p>
            </div>
            <div class="p-6 border-t border-stroke">
                <button type="button" onclick="saveSignerSummary(); closeOffcanvas();" class="w-full bg-brand-500 text-white px-4 py-2 rounded-lg text-sm ">Save Signers</button>
            </div>
        </div>

        <!-- 4. MESSAGE OFFCANVAS -->
        <div id="message-offcanvas" class="offcanvas-panel">
            <div class="p-6 border-b border-stroke flex justify-between items-center">
                <h2 class="text-xl font-semibold">Email Message</h2>
                <button type="button" onclick="closeOffcanvas()" class="text-2xl">&times;</button>
            </div>
            <div class="p-6 space-y-4 mb-10">
                <label class="block text-sm font-medium">Custom message to recipients:</label>
                <div id="quill-editor-container">
                    <div id="editor">
                        {!! $email_settings_data->signature_email_body ?? '' !!}
                    </div>
                </div>
                <input type="hidden" name="txt_message" id="txt_message">
            </div>
            <div class="p-6 border-stroke mt-auto mt-4">
                <button type="button" onclick="saveMessageSummary(); closeOffcanvas();" class="w-full bg-brand-500 text-white px-4 py-2 rounded-lg text-sm ">Save Message</button>
            </div>
        </div>

        <!-- 5. REVIEW OFFCANVAS -->
        <div id="review-offcanvas" class="offcanvas-panel">
            <div class="p-6 border-b border-stroke flex justify-between items-center bg-gray-50 dark:bg-meta-4">
                <h2 class="text-xl font-semibold text-success ">Review & Send</h2>
                <button type="button" onclick="closeOffcanvas()" class="text-2xl">&times;</button>
            </div>
            <div class="p-6 space-y-6 overflow-y-auto flex-1">
                <div>
                    <h4 class="text-xs font-bold uppercase text-gray-400 mb-2">Selected Templates</h4>
                    <div id="rev-docs" class="space-y-1 text-sm font-medium"></div>
                </div>
                <div class="border-t pt-4">
                    <h4 class="text-xs font-bold uppercase text-gray-400 mb-2">Prefill Values</h4>
                    <div id="rev-prefill" class="space-y-1 text-sm font-medium"></div>
                </div>
                <div class="border-t pt-4">
                    <h4 class="text-xs font-bold uppercase text-gray-400 mb-2">Preferences</h4>
                    <div id="rev-prefs" class="space-y-1 text-sm font-medium"></div>
                </div>
                <div class="border-t pt-4">
                    <h4 class="text-xs font-bold uppercase text-gray-400 mb-2">Signing Mode</h4>
                    <p id="rev-mode" class="text-sm font-bold text-primary"></p>
                </div>
                <div class="border-t pt-4">
                    <h4 class="text-xs font-bold uppercase text-gray-400 mb-2">Signers</h4>
                    <div id="rev-signers" class="space-y-3"></div>
                </div>
            </div>
            <div class="p-6 border-t border-stroke bg-white dark:bg-boxdark">
                <button type="submit" class="w-full bg-brand-500 text-white px-4 py-2 rounded-lg text-sm ">Confirm & Send Request</button>
                <button type="button" onclick="closeOffcanvas()" class="w-full mt-2 text-sm text-gray-500">Back to editing</button>
            </div>
        </div>

    </form>
    @endif
</div>

<div id="offcanvas-overlay" onclick="closeAllSidebars()" class="fixed inset-0 bg-black/50 z-[999] hidden transition-opacity duration-300"></div>

<div id="offcanvas-preview"  class="fixed top-0 right-0 h-full md:w-[450px] bg-white dark:bg-boxdark shadow-2xl transform translate-x-full transition-transform duration-300 ease-in-out border-l border-stroke flex flex-col" style="z-index:100000;width:450px">
    <div class="p-4 border-b border-stroke flex items-center justify-between">
        <h3 class="font-bold">Document Preview</h3>
        <button type="button" onclick="closePreview()" class="text-2xl">&times;</button>
    </div>
    <div class="flex-1 overflow-hidden bg-gray-100 dark:bg-meta-4">
        <iframe id="pdf-preview-frame" src="" class="w-full h-full border-none"></iframe>
    </div>
</div>

<style>
    .offcanvas-panel {
        position: fixed; top: 0; right: -500px; width: 100%; max-width: 500px; height: 100vh;
        background: #fff; z-index: 1000; box-shadow: -10px 0 30px rgba(0,0,0,0.1);
        transition: right 0.3s ease-in-out; display: flex; flex-direction: column;
    }
    .dark .offcanvas-panel { background: #24303f; color: #fff; border-left: 1px solid #313d4a; }
    .offcanvas-panel.active { right: 0; }
    .document-card input:checked + div { border-color: #1a7a6e; }
</style>

<!-- QUILL JS SCRIPT -->
<script src="https://cdn.quilljs.com/1.3.6/quill.js"></script>

<script>
    let quill;

    // 1. Template Selection Logic
    document.querySelectorAll('.template-checkbox').forEach(cb => {
        cb.addEventListener('change', () => {
            const checked = document.querySelectorAll('.template-checkbox:checked');
            document.getElementById('doc-count-badge').innerText = checked.length;
            
            if(checked.length > 0) {
                document.getElementById('check-icon-docs').classList.remove('hidden');
                document.getElementById('btn-config-signers').disabled = false;
                document.getElementById('btn-config-signers').classList.remove('opacity-50', 'cursor-not-allowed');
                document.getElementById('btn-config-prefill').disabled = false;
                document.getElementById('btn-config-prefill').classList.remove('opacity-50', 'cursor-not-allowed');
            } else {
                document.getElementById('check-icon-docs').classList.add('hidden');
                document.getElementById('btn-config-signers').disabled = true;
                document.getElementById('btn-config-signers').classList.add('opacity-50', 'cursor-not-allowed');
                document.getElementById('btn-config-prefill').disabled = true;
                document.getElementById('btn-config-prefill').classList.add('opacity-50', 'cursor-not-allowed');
            }
            renderSignerInputs(checked);
            renderPrefillInputs(checked);
        });
    });

    // NEW: Generate Prefill Inputs
    function renderPrefillInputs(checkedNodes) {
        const wrapper = document.getElementById('prefill-inputs-wrapper');
        wrapper.innerHTML = '';
        if(checkedNodes.length === 0) {
            wrapper.innerHTML = '<p class="text-center text-gray-400 py-10">Please select templates on the main page first.</p>';
            return;
        }

        let hasPrefill = false;

        checkedNodes.forEach(node => {
            const templateId = node.value;
            const title = node.dataset.title;
            let templateJson = {};
            try { templateJson = JSON.parse(node.dataset.signersJson); } catch(e) {}
            
            // Assuming prefill fields are defined in 'fields' associated with role 'prefill'
            // OR based on your schema where signer id is 'prefill'
            let prefillFields = (templateJson.fields || []).filter(f => f.signer === 'prefill' || f.role === 'prefill');

            if(prefillFields.length > 0) {
                hasPrefill = true;
                let html = `
                    <div class="p-4 bg-gray-50 dark:bg-meta-4 rounded-lg border border-stroke dark:border-strokedark mb-6">
                        <h4 class="font-bold text-primary mb-4 flex items-center gap-2 truncate">
                            <i class="bi bi-pencil-square"></i> Prefill: ${title}
                        </h4>`;
                
                prefillFields.forEach((field) => {
                    html += `
                        <div class="mb-4">
                            <label class="block text-xs font-bold text-gray-400 uppercase mb-2">${field.name || 'Field'}</label>
                            <input type="text" 
                                   name="prefill-${templateId}-${field.name}" 
                                   data-field-label="${field.name}"
                                   class="prefill-field dark:bg-dark-900 shadow-theme-xs focus:border-brand-300 focus:ring-brand-500/10 h-11 w-full rounded-lg border border-gray-300 bg-transparent px-4 py-2.5 text-sm text-gray-800 placeholder:text-gray-400 focus:ring-3 focus:outline-hidden dark:border-gray-700 dark:bg-gray-900 dark:text-white/90" 
                                   placeholder="Enter ${field.name}...">
                        </div>`;
                });
                html += `</div>`;
                wrapper.innerHTML += html;
            }
        });

        if(!hasPrefill) {
            wrapper.innerHTML = '<p class="text-center text-gray-400 py-10">No prefill fields found in selected templates.</p>';
        }
    }

    // 2. Generate Dynamic Signer Inputs
    function renderSignerInputs(checkedNodes) {
        const wrapper = document.getElementById('signer-inputs-wrapper');
        wrapper.innerHTML = '';
        if(checkedNodes.length === 0) {
            wrapper.innerHTML = '<p class="text-center text-gray-400 py-10">Please select templates on the main page first.</p>';
            return;
        }
        checkedNodes.forEach(node => {
            const templateId = node.value;
            const title = node.dataset.title;
            let templateJson = {};
            try { templateJson = JSON.parse(node.dataset.signersJson); } catch(e) {}
            let signers = (templateJson.signers || []).filter(s => s.id !== 'prefill');
            let html = `
                <div class="p-4 bg-gray-50 dark:bg-meta-4 rounded-lg border border-stroke dark:border-strokedark mb-6">
                    <h4 class="font-bold text-primary mb-4 flex items-center gap-2 truncate">
                        <i class="bi bi-file-earmark-pdf"></i> ${title}
                    </h4>`;
            signers.forEach((signer, idx) => {
                let num = idx + 1;
                html += `
                    <div class="bg-white dark:bg-boxdark p-4 rounded border border-stroke dark:border-strokedark shadow-sm mb-4">
                        <p class="text-[10px] font-bold text-gray-400 uppercase mb-2">Signer: ${signer.name}</p>
                        <input type="hidden" name="signer_id-${templateId}-${num}" value="${signer.id}">
                        <div class="space-y-3">
                            <div class="relative">
                                <input type="text" name="name-${templateId}-${num}" autocomplete="off" class="signer-name-field dark:bg-dark-900 shadow-theme-xs focus:border-brand-300 focus:ring-brand-500/10 h-11 w-full rounded-lg border border-gray-300 bg-transparent px-4 py-2.5 text-sm text-gray-800 placeholder:text-gray-400 focus:ring-3 focus:outline-hidden dark:border-gray-700 dark:bg-gray-900 dark:text-white/90" placeholder="Full Name" required>
                                <div class="autocomplete-results hidden"></div>
                            </div>
                            <input type="email" name="email-${templateId}-${num}" autocomplete="off" class="signer-email-field dark:bg-dark-900 shadow-theme-xs focus:border-brand-300 focus:ring-brand-500/10 h-11 w-full rounded-lg border border-gray-300 bg-transparent px-4 py-2.5 text-sm text-gray-800 placeholder:text-gray-400 focus:ring-3 focus:outline-hidden dark:border-gray-700 dark:bg-gray-900 dark:text-white/90" placeholder="Email Address" required>
                        </div>
                    </div>`;
            });
            html += `</div>`;
            wrapper.innerHTML += html;
        });

        attachAutocompleteListeners();
    }

    function attachAutocompleteListeners() {
        document.querySelectorAll('.signer-name-field').forEach(input => {
            input.addEventListener('input', function() {
                const query = this.value;
                const resultsContainer = this.nextElementSibling;
                if (query.length < 1) {
                    resultsContainer.classList.add('hidden');
                    return;
                }

                fetch(`/search_contacts?term=${encodeURIComponent(query)}`)
                    .then(res => res.json())
                    .then(data => {
                        resultsContainer.innerHTML = '';
                        if (data.length > 0) {
                            resultsContainer.classList.remove('hidden');
                            data.forEach(contact => {
                                const fullName = `${contact.contact_firstname} ${contact.contact_lastname}`.trim();
                                const div = document.createElement('div');
                                div.className = 'autocomplete-item';
                                div.innerHTML = `<div class="name">${fullName}</div><div class="email">${contact.contact_email}</div>`;
                                div.onclick = () => {
                                    this.value = fullName;
                                    const parent = this.closest('.space-y-3');
                                    parent.querySelector('.signer-email-field').value = contact.contact_email;
                                    resultsContainer.classList.add('hidden');
                                };
                                resultsContainer.appendChild(div);
                            });
                        } else {
                            resultsContainer.classList.add('hidden');
                        }
                    });
            });
        });
        document.addEventListener('click', function(e) {
            if (!e.target.classList.contains('signer-name-field')) {
                document.querySelectorAll('.autocomplete-results').forEach(el => el.classList.add('hidden'));
            }
        });
    }

    // 3. UI Summary Updates
    function savePreferencesSummary() {
        const seq = document.getElementById('sequential_signing').checked;
        const vis = document.getElementById('field_visible').checked;
        let active = [];
        if(seq) active.push("Sequential");
        if(vis) active.push("Visible Fields");
        
        if(active.length > 0) {
            document.getElementById('summary-preferences').innerHTML = `<span class="text-primary font-bold"><i class="bi bi-check-circle"></i> ${active.join(', ')}</span>`;
            document.getElementById('check-icon-preferences').classList.remove('hidden');
        } else {
            document.getElementById('summary-preferences').innerHTML = `<span class="text-gray-500 italic">No preferences selected</span>`;
            document.getElementById('check-icon-preferences').classList.add('hidden');
        }
    }

    function saveModeSummary() {
        const mode = document.querySelector('input[name="choose_mode"]:checked');
        if(mode) {
            document.getElementById('summary-mode').innerHTML = `<span class="text-primary font-bold"><i class="bi bi-check-circle"></i> ${mode.value === 'email' ? 'Remote Email' : 'In-Person'}</span>`;
            document.getElementById('check-icon-mode').classList.remove('hidden');
        }
    }

    // NEW: Prefill Summary
    function savePrefillSummary() {
        const fields = document.querySelectorAll('.prefill-field');
        let filledCount = 0;
        fields.forEach(f => { if(f.value) filledCount++; });

        document.getElementById('summary-prefill').innerHTML = `<span class="text-primary font-bold"><i class="bi bi-pencil-fill"></i> ${filledCount} fields filled</span>`;
        if(filledCount > 0) {
            document.getElementById('check-icon-prefill').classList.remove('hidden');
        } else {
            document.getElementById('check-icon-prefill').classList.add('hidden');
        }
    }

    async function saveSignerSummary() {
        const names = document.querySelectorAll('.signer-name-field');
        const emails = document.querySelectorAll('.signer-email-field');
        let filledCount = 0;
        const csrfToken = '{{ csrf_token() }}';

        for (let i = 0; i < names.length; i++) {
            const nameVal = names[i].value;
            const emailVal = emails[i].value;
            if (nameVal && emailVal) {
                filledCount++;
                await fetch('/ajax_save_contacts', {
                    method: 'POST',
                    headers: { 'Content-Type': 'application/json', 'X-CSRF-TOKEN': csrfToken },
                    body: JSON.stringify({ name: nameVal, email: emailVal })
                });
            }
        }

        document.getElementById('summary-signers').innerHTML = `<span class="text-primary font-bold"><i class="bi bi-person-check"></i> ${filledCount} signers configured</span>`;
        if(filledCount > 0) {
            document.getElementById('check-icon-signers').classList.remove('hidden');
        } else {
            document.getElementById('check-icon-signers').classList.add('hidden');
        }
    }

    function saveMessageSummary() {
        if(quill) { document.getElementById('txt_message').value = quill.root.innerHTML; }
        document.getElementById('summary-message').innerHTML = `<span class="text-primary font-bold"><i class="bi bi-chat-left-text"></i> Custom message saved</span>`;
        document.getElementById('check-icon-message').classList.remove('hidden');
    }

    // 4. Review Panel Rendering
    function renderReview() {
        const docBox = document.getElementById('rev-docs');
        const modeBox = document.getElementById('rev-mode');
        const signerBox = document.getElementById('rev-signers');
        const prefBox = document.getElementById('rev-prefs');
        const prefillBox = document.getElementById('rev-prefill');

        docBox.innerHTML = ''; signerBox.innerHTML = ''; prefBox.innerHTML = ''; prefillBox.innerHTML = '';
        
        document.querySelectorAll('.template-checkbox:checked').forEach(cb => {
            docBox.innerHTML += `<p class="flex items-center gap-2"><i class="bi bi-file-check text-success"></i> ${cb.dataset.title}</p>`;
        });

        // Prefill Review
        document.querySelectorAll('.prefill-field').forEach(field => {
            if(field.value) {
                prefillBox.innerHTML += `<p class="text-xs"><b>${field.dataset.fieldLabel}:</b> ${field.value}</p>`;
            }
        });
        if(!prefillBox.innerHTML) prefillBox.innerHTML = '<p class="text-xs text-gray-400 italic">No prefill data entered</p>';

        const seq = document.getElementById('sequential_signing').checked;
        const vis = document.getElementById('field_visible').checked;
        prefBox.innerHTML += `<p class="flex items-center gap-2"><i class="bi bi-dot"></i> Sequential: ${seq ? 'Yes' : 'No'}</p>`;
        prefBox.innerHTML += `<p class="flex items-center gap-2"><i class="bi bi-dot"></i> Fields Visible: ${vis ? 'Yes' : 'No'}</p>`;

        const mode = document.querySelector('input[name="choose_mode"]:checked');
        modeBox.innerText = mode ? (mode.value === 'email' ? 'Remote Email' : 'In-Person') : 'Not selected';
        
        const names = document.querySelectorAll('.signer-name-field');
        const emails = document.querySelectorAll('.signer-email-field');
        names.forEach((n, i) => {
            if(n.value) {
                signerBox.innerHTML += `
                    <div class="flex items-center gap-3 bg-gray-50 dark:bg-meta-4 p-2 rounded">
                        <div class="w-8 h-8 rounded-full bg-primary/10 text-primary flex items-center justify-center font-bold text-xs">${i+1}</div>
                        <div class="truncate"><p class="font-bold text-xs m-0">${n.value}</p><p class="text-[10px] text-gray-500 m-0">${emails[i].value}</p></div>
                    </div>`;
            }
        });
    }

    // 5. Sidebars Control
    function openOffcanvas(id) {
        if(id === 'review') {
            const modeSelected = document.querySelector('input[name="choose_mode"]:checked');
            if(!modeSelected) {
                alert("Please select a Signing Mode before proceeding to Review.");
                openOffcanvas('signing-mode');
                return;
            }
            if(quill) { document.getElementById('txt_message').value = quill.root.innerHTML; }
            renderReview();
        }
        document.getElementById('offcanvas-overlay').classList.remove('hidden');
        document.getElementById(id + '-offcanvas').classList.add('active');
        document.body.style.overflow = 'hidden';
    }
    function closeOffcanvas() {
        document.getElementById('offcanvas-overlay').classList.add('hidden');
        document.querySelectorAll('.offcanvas-panel').forEach(el => el.classList.remove('active'));
        document.body.style.overflow = 'auto';
    }
    function closeAllSidebars() { closeOffcanvas(); closePreview(); }

    function openPreview(src) {
        document.getElementById('pdf-preview-frame').src = src;
        document.getElementById('offcanvas-preview').classList.remove('translate-x-full');
        document.getElementById('offcanvas-overlay').classList.remove('hidden');
        document.body.style.overflow = 'hidden';
    }
    function closePreview() {
        document.getElementById('pdf-preview-frame').src = "";
        document.getElementById('offcanvas-preview').classList.add('translate-x-full');
        document.getElementById('offcanvas-overlay').classList.add('hidden');
        document.body.style.overflow = 'auto';
    }

    window.onload = () => {
        quill = new Quill('#editor', {
            theme: 'snow',
            modules: { toolbar: [['bold', 'italic', 'underline'], [{ 'list': 'ordered'}, { 'list': 'bullet' }], ['link', 'clean']] }
        });

        document.getElementById('templateSearch').addEventListener('keyup', function() {
            const query = this.value.toLowerCase();
            document.querySelectorAll('.document-card').forEach(card => {
                const title = card.querySelector('.template-title-cell').innerText.toLowerCase();
                card.style.display = title.includes(query) ? 'flex' : 'none';
            });
        });

        document.getElementById('master-signature-form').onsubmit = function(e) {
            const modeSelected = document.querySelector('input[name="choose_mode"]:checked');
            if(!modeSelected) {
                e.preventDefault();
                alert("Please select a Signing Mode before sending the request.");
                openOffcanvas('signing-mode');
                return false;
            }
            if(quill) { document.getElementById('txt_message').value = quill.root.innerHTML; }
        };
    };
</script>
@endsection

<style type="text/css">
    .text-meta-3 { color:green; }
    .offcanvas-panel { z-index: 1000000 !important; }
</style>