/* Skip Navigation Link for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: #0d6efd;
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    z-index: 10000;
    font-weight: 600;
    border-radius: 0 0 4px 0;
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 0;
    outline: 2px solid #fff;
    outline-offset: -2px;
}

/* Enhanced Focus Indicators for Accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid #0d6efd;
    outline-offset: 2px;
    border-radius: 2px;
}

/* Ensure focus is visible even on dark backgrounds */
.navbar a:focus-visible,
.navbar button:focus-visible {
    outline-color: #fff;
}

/* Touch Target Size for Mobile Accessibility */
@media (max-width: 768px) {
    button,
    a.btn,
    input[type="button"],
    input[type="submit"],
    .navbar-toggler {
        min-height: 48px;
        min-width: 48px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
}

/* Better Color Contrast for Text */
.text-muted {
    color: #495057 !important; /* Darker for better contrast */
}

/* Ensure interactive elements have visible focus */
.dropdown-toggle:focus,
.nav-link:focus {
    outline: 2px solid currentColor;
    outline-offset: 2px;
}

/* Hide ad containers when no ad is rendered to prevent layout shift */
.ad-slot.no-ad,
.ad-container.no-ad {
    display: none !important;
}

.ad-slot.has-ad,
.ad-container.has-ad {
    display: block !important;
}

/* Prevent layout shift from lazy-loaded images */
img[loading="lazy"] {
    content-visibility: auto;
}

/* Smooth transitions for better UX */
.navbar-collapse {
    transition: height 0.3s ease;
}

/* Optimize font rendering */
body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Performance optimization for animations */
.fade,
.collapse,
.collapsing {
    will-change: opacity, height;
}

/* GPU acceleration for smooth scrolling */
.smooth-scroll {
    scroll-behavior: smooth;
    transform: translateZ(0);
    will-change: transform;
}