feat: polir delight editorial no site público (MAN-139)

Confirmação de briefing/parceria, micro-feedback de campos e nav, e copy mais humana nos erros — sem quebrar reduced-motion.

Co-authored-by: Cursor <cursoragent@cursor.com>

resources/views/components/public/form-success.blade.php

@@ -0,0 +1,44 @@
+@props([
+    'seal' => 'Recebido',
+    'title',
+    'body',
+    'homeLabel' => 'Voltar para a home',
+    'whatsappLabel' => 'Falar no WhatsApp',
+    'whatsappText' => 'Olá, enviei um briefing e gostaria de acompanhar.',
+])
+
+@php
+    $settings = $siteSettings ?? \App\Models\SiteSetting::instance();
+    $digits = preg_replace('/\D/', '', (string) ($settings->whatsapp_number ?? ''));
+    $whatsappHref = strlen($digits) >= 10
+        ? 'https://wa.me/'.$digits.'?text='.rawurlencode($whatsappText)
+        : null;
+@endphp
+
+<div
+    role="status"
+    data-form-success
+    class="mt-10 max-w-2xl space-y-6 border border-amare-border bg-amare-bg-deep px-6 py-10 md:px-10"
+    data-motion="page-open"
+    {{ $attributes }}
+>
+    <p class="text-xs font-semibold uppercase tracking-[0.14em] text-amare-accent" data-motion-beat="seal">{{ $seal }}</p>
+    <h3 class="text-3xl font-medium tracking-tight text-amare-text md:text-4xl" data-motion-beat="title">{{ $title }}</h3>
+    <p class="max-w-xl text-lg leading-relaxed text-amare-muted" data-motion-beat="heading">{{ $body }}</p>
+
+    <div class="flex flex-col items-start gap-4 pt-2 sm:flex-row sm:items-center sm:gap-8" data-motion-beat="cta">
+        <a href="{{ route('home') }}" class="btn btn-primary min-h-11 px-6 text-xs font-bold uppercase tracking-[0.09em]">
+            {{ $homeLabel }}
+        </a>
+        @if ($whatsappHref)
+            <a
+                href="{{ $whatsappHref }}"
+                class="btn btn-ghost min-h-0 px-0 text-xs font-bold uppercase tracking-[0.09em] text-amare-accent hover:bg-transparent hover:text-amare-accent-deep"
+                rel="noopener noreferrer"
+                target="_blank"
+            >
+                <span class="link-editorial">{{ $whatsappLabel }}</span>
+            </a>
+        @endif
+    </div>
+</div>