refactor(ui): sharpen buttons + inputs to rounded (4px) for modern minimal SaaS look

V2 sharper radii system aligned with Stripe Dashboard / Linear / Vercel
aesthetic — the v1 rounded-lg (8px) on buttons still felt too soft.

New scale:
- Buttons (CTA, submit, ghost, secondary): rounded-lg → rounded (4px)
- Form inputs (text/email/password/select/textarea): rounded-md → rounded (4px)
- Checkboxes: rounded-sm (2px) added explicitly to consent + remember-me
- Cards (pricing, bento, content panels): rounded-xl → rounded-lg (8px)
- Small icon tiles (w-10 h-10 / w-12 h-12 grad-bg squares): rounded-md → rounded
- Pills, badges, avatars, status orbs: rounded-full (KEPT)
- Inline code in legal CSS: rounded (4px) (KEPT)
- Legal blockquote/pre/draft-callout border-radius: 8px → 4px

Files modified (24):
- templates/macros/{button,bento,pricing_card}.html
- templates/marketing/{landing,tarifs,fonctionnalites,conformite,contact}.html
- templates/auth/{check_email,forgot_password,magic_link_request,
  oauth_finish_signup,passkey_setup,reset_password,totp_setup,totp_verify,
  verify_success}.html
- templates/billing/{success,cancel}.html
- templates/legal/{_layout,index}.html
- templates/{register,login}.html
- tests/test_marketing_landing_template.py (assertions updated to match v2)

Verification:
- 18/18 legal page tests pass (tests/_run_legal_pages_windows.py)
- 58/58 marketing landing tests pass

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

templates/login.html

@@ -5,7 +5,7 @@
 
 {% block content %}
 <section class="min-h-[calc(100vh-62px)] bg-brand-bg py-16 px-4" aria-labelledby="login-title">
-  <div class="max-w-md mx-auto bg-white p-8 rounded-xl border border-brand-border shadow-cta">
+  <div class="max-w-md mx-auto bg-white p-8 rounded-lg border border-brand-border shadow-cta">
     <h1 id="login-title" class="text-3xl font-black text-brand-navy mb-2">Connexion</h1>
     <p class="text-sm text-brand-navy/70 mb-6">{{ "Bienvenue sur DictIA — la transcription IA conforme à la Loi&nbsp;25." | safe }}</p>
 
@@ -28,7 +28,7 @@
       <div class="space-y-3 mb-6" aria-label="Connexion fédérée">
         {% if oauth_microsoft_enabled %}
           <a href="{{ url_for('auth.oauth_provider_login', provider='microsoft') }}"
-             class="w-full inline-flex items-center justify-center gap-3 px-4 py-3 bg-white border border-brand-border rounded-lg text-brand-navy font-semibold hover:bg-brand-bg transition focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2">
+             class="w-full inline-flex items-center justify-center gap-3 px-4 py-3 bg-white border border-brand-border rounded text-brand-navy font-semibold hover:bg-brand-bg transition focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2">
             {# Official Microsoft 4-square logo #}
             <svg width="20" height="20" viewBox="0 0 21 21" aria-hidden="true" focusable="false">
               <rect x="1"  y="1"  width="9" height="9" fill="#F25022"/>
@@ -42,7 +42,7 @@
 
         {% if oauth_google_enabled %}
           <a href="{{ url_for('auth.oauth_provider_login', provider='google') }}"
-             class="w-full inline-flex items-center justify-center gap-3 px-4 py-3 bg-white border border-brand-border rounded-lg text-brand-navy font-semibold hover:bg-brand-bg transition focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2">
+             class="w-full inline-flex items-center justify-center gap-3 px-4 py-3 bg-white border border-brand-border rounded text-brand-navy font-semibold hover:bg-brand-bg transition focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2">
             {# Official Google "G" logo #}
             <svg width="20" height="20" viewBox="0 0 24 24" aria-hidden="true" focusable="false">
               <path fill="#4285F4" d="M22.56 12.25c0-.78-.07-1.53-.2-2.25H12v4.26h5.92a5.06 5.06 0 0 1-2.2 3.32v2.76h3.56c2.08-1.92 3.28-4.74 3.28-8.09Z"/>
@@ -56,7 +56,7 @@
 
         {% if sso_enabled %}
           <a href="{{ url_for('auth.sso_login') }}"
-             class="w-full inline-flex items-center justify-center gap-3 px-4 py-3 bg-white border border-brand-border rounded-lg text-brand-navy font-semibold hover:bg-brand-bg transition focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2">
+             class="w-full inline-flex items-center justify-center gap-3 px-4 py-3 bg-white border border-brand-border rounded text-brand-navy font-semibold hover:bg-brand-bg transition focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2">
             <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true" focusable="false">
               <rect x="3" y="11" width="18" height="11" rx="2"/>
               <path d="M7 11V7a5 5 0 0 1 10 0v4"/>
@@ -81,25 +81,25 @@
 
         <div>
           <label for="email" class="block text-sm font-medium text-brand-navy mb-1">Courriel <span class="text-red-600" aria-hidden="true">*</span></label>
-          {{ form.email(id='email', type='email', autocomplete='email', required=true, **{'aria-required':'true', 'class':'w-full px-3 py-2 border border-brand-border rounded-md text-brand-navy focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2'}) }}
+          {{ form.email(id='email', type='email', autocomplete='email', required=true, **{'aria-required':'true', 'class':'w-full px-3 py-2 border border-brand-border rounded text-brand-navy focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2'}) }}
           {% if form.email.errors %}<p class="text-xs text-red-700 mt-1" role="alert">{{ form.email.errors[0] }}</p>{% endif %}
         </div>
 
         <div>
           <label for="password" class="block text-sm font-medium text-brand-navy mb-1">Mot de passe <span class="text-red-600" aria-hidden="true">*</span></label>
-          {{ form.password(id='password', autocomplete='current-password', required=true, **{'aria-required':'true', 'class':'w-full px-3 py-2 border border-brand-border rounded-md text-brand-navy focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2'}) }}
+          {{ form.password(id='password', autocomplete='current-password', required=true, **{'aria-required':'true', 'class':'w-full px-3 py-2 border border-brand-border rounded text-brand-navy focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2'}) }}
           {% if form.password.errors %}<p class="text-xs text-red-700 mt-1" role="alert">{{ form.password.errors[0] }}</p>{% endif %}
         </div>
 
         <div class="flex items-center justify-between text-sm">
           <label for="remember" class="flex items-center gap-2 text-brand-navy/90 cursor-pointer">
-            {{ form.remember(id='remember', **{'class':'focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2'}) }}
+            {{ form.remember(id='remember', **{'class':'rounded-sm focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2'}) }}
             <span>Se souvenir de moi</span>
           </label>
           <a href="{{ url_for('auth.forgot_password') }}" class="grad-text font-semibold hover:underline">Mot de passe oublié&nbsp;?</a>
         </div>
 
-        <button type="submit" class="w-full grad-bg text-white font-semibold py-3 rounded-lg shadow-cta hover:shadow-cta-hover transition focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2">
+        <button type="submit" class="w-full grad-bg text-white font-semibold py-3 rounded shadow-cta hover:shadow-cta-hover transition focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2">
           Se connecter
         </button>
       </form>