templates/_navbar.html

<style>
    /* Modern Navbar Styling */
    .modern-navbar {
        background: linear-gradient(135deg, #1a1d20 0%, #212529 100%);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        padding: 0.8rem 1rem;
    }

    .navbar-brand {
        font-weight: 700;
        letter-spacing: 0.5px;
        color: #fff !important;
    }

    .nav-link {
        font-weight: 500;
        transition: all 0.3s ease;
        border-radius: 5px;
        padding: 8px 12px !important;
        margin: 0 2px;
    }

    .nav-link:hover {
        background-color: rgba(255, 255, 255, 0.1);
        color: #0d6efd !important; /* Bootstrap primary blue */
        transform: translateY(-1px);
    }

    .nav-link.active {
        background-color: rgba(13, 110, 253, 0.15);
        color: #0d6efd !important;
    }

    /* Mobile Toggler Styling */
    .navbar-toggler {
        border: none;
        padding: 0.25rem 0.5rem;
    }
    
    .navbar-toggler:focus {
        box-shadow: none; 
        outline: 2px solid rgba(13, 110, 253, 0.5);
    }
</style>

<nav class="navbar navbar-expand-lg navbar-dark modern-navbar sticky-top">
    <div class="container-fluid">
        <!-- Brand -->
        <a class="navbar-brand" href="{{ url_for('main.index_v2') }}">
            <i class="bi bi-file-earmark-pdf-fill me-2 text-primary"></i>DocuPDF
        </a>

<!-- Toggler Button (Hamburger) -->
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
    </button>

    <!-- Collapsible Content -->
    <div class="collapse navbar-collapse" id="navbarNav">
        {% include '_nav_links.html' %}
    </div>
</div>
</nav>