/* ==========================================================================
   Navigation Styles
   ========================================================================== */

/* --- 1. Navbar Container --- */
.navbar {
    position: relative;
    z-index: 1030;
    min-height: var(--navbar-height, 64px);
    padding: 0.5rem 0;
    
    /* Glassmorphism Background */
    background: white;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    
    transition: all 0.3s ease;
}

.navbar.shadow-sm {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

/* --- 2. Brand / Logo --- */
.navbar-brand {
    font-family: var(--font-heading, sans-serif);
    font-weight: var(--fw-bold, 700);
    letter-spacing: var(--ls-heading, -0.02em);
    color: var(--bs-primary, #34509c);
    padding-top: 0;
    padding-bottom: 0;
    margin-right: 2rem;
    transition: transform 0.2s ease, color 0.2s ease;
}

.navbar-brand:hover {
    transform: translateX(3px);
    color: var(--bs-primary, #34509c);
}

/* Gradient Text for Brand Name */
.navbar-brand span {
    background: linear-gradient(135deg, var(--bs-primary, #34509c) 0%, #5668b3 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* --- 3. Navigation Links --- */
.navbar-nav .nav-link {
    font-family: var(--font-body, sans-serif);
    font-weight: var(--fw-medium, 500);
    color: var(--bs-gray-700, #495057);
    padding: 0.5rem 1rem !important;
    margin: 0 0.25rem;
    border-radius: 0.5rem;
    position: relative;
    transition: color 0.3s ease, background-color 0.3s ease;
}

/* Link Hover & Active States */
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--bs-primary, #34509c);
    background-color: rgba(52, 80, 156, 0.05);
}

.navbar-nav .nav-link.active {
    background-color: rgba(52, 80, 156, 0.1);
}

/* Animated Underline Effect */
.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 5px; /* Adjusted to sit inside the padding */
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--bs-primary, #34509c) 0%, var(--bs-accent, #ea1f63) 100%);
    transition: width 0.3s ease, transform 0.3s ease;
    transform: translateX(-50%);
    opacity: 0;
}

.navbar-nav .nav-link:hover::after {
    width: calc(100% - 2rem); /* Matches horizontal padding */
    opacity: 1;
}

/* --- 4. Mobile Toggler --- */
.navbar-toggler {
    padding: 0.5rem;
    border: none;
    font-size: 1.25rem;
    color: var(--bs-primary, #34509c);
    background: transparent;
    border-radius: 0.5rem;
    transition: background-color 0.2s ease;
}

.navbar-toggler:hover,
.navbar-toggler:focus {
    background-color: rgba(52, 80, 156, 0.1);
    outline: none;
    box-shadow: none;
}

/* --- 5. Mobile Menu (Collapse) --- */
@media (max-width: 991.98px) {
    .navbar-collapse {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
        padding: 1rem;
        margin-top: 1px; /* Separation from header */
        
        /* Animation setup */
        transform-origin: top;
        transition: all 0.3s ease-in-out;
    }

    .navbar-nav .nav-link {
        padding: 0.75rem 1rem !important;
        margin: 0.25rem 0;
        width: 100%;
    }
    
    /* Hide underline animation on mobile, stick to background hover */
    .navbar-nav .nav-link::after {
        display: none;
    }
    
    /* Push content down when menu is open */
    .navbar-collapse.show + * {
        margin-top: var(--navbar-height, 64px);
    }
}