Update templates and styles

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

templates/index.html

@@ -3,21 +3,16 @@
 {% block title %}{{ 'welcome'|t }} - NetEvents{% endblock %}
 
 {% block content %}
+<div class="container">
 <div class="hero">
     <h1>{{ 'welcome'|t }}</h1>
     <p>{{ 'connect_with_professionals'|t }}</p>
     {% if not session.user_id %}
         <div class="hero-buttons">
-            <a href="{{ url_for('register_organizer') }}" class="btn btn-primary">{{ 'register_as_organizer'|t }}</a>
+            <p>{{ 'not_yet_registered'|t }} <a href="{{ url_for('register_organizer') }}">{{ 'register_for_free'|t }}</a></p>
         </div>
         <div class="login-options">
-            <p>{{ 'already_have_account'|t }}</p>
-            <div class="login-buttons">
-                <a href="{{ url_for('login') }}?type=breakout_organizer" class="btn btn-outline">{{ 'presenter'|t }}</a>
-                <a href="{{ url_for('login') }}?type=staff" class="btn btn-outline">{{ 'staff'|t }}</a>
-                <a href="{{ url_for('login') }}?type=attendee" class="btn btn-outline">{{ 'visitor'|t }}</a>
-                <a href="{{ url_for('login') }}?type=organizer" class="btn btn-outline">{{ 'organiser'|t }}</a>
-            </div>
+            <p>{{ 'already_have_account'|t }} <a href="{{ url_for('login') }}?type=organizer">{{ 'login_as_organiser'|t }}</a></p>
         </div>
     {% endif %}
 </div>
@@ -72,4 +67,5 @@
     </div>
 </section>
 {% endif %}
+</div>
 {% endblock %}