feat: Add accent color to invoice settings and update related views; enhance event creation with brand contract option

resources/views/invoices/settings.blade.php

@@ -96,6 +96,22 @@
                            value="{{ old('header_title', $settings->header_title) }}"
                            class="input-soft text-sm" placeholder="Content Creator · KOL">
                 </div>
+                <div x-data="{ color: '{{ old('accent_color', $settings->accent_color ?? '#FFB7C5') }}' }">
+                    <label class="block text-xs font-semibold text-gray-600 mb-1">Accent Color</label>
+                    <div class="flex items-center gap-3 mt-1">
+                        <input type="color" name="accent_color" x-model="color"
+                               class="w-10 h-10 rounded-xl cursor-pointer border-2 border-pink-100 p-0.5">
+                        <div class="flex gap-2 flex-wrap">
+                            @foreach(['#FFB7C5','#B5EAD7','#FDFD96','#E8D5F5','#FFD5B8','#AEC6CF','#FF8FAD','#A8D8EA'] as $preset)
+                                <button type="button"
+                                        class="w-7 h-7 rounded-full ring-2 ring-transparent hover:ring-gray-400 transition-all"
+                                        style="background:{{ $preset }}"
+                                        @click="color = '{{ $preset }}'"></button>
+                            @endforeach
+                        </div>
+                    </div>
+                    <p class="text-xs text-gray-400 mt-1.5">Applied to your invoice header name and totals.</p>
+                </div>
             </div>
         </div>