/* Sticky footer for boxed layout */
html, body {
    height: 100%;
}

body > .container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

#content {
    flex: 1 0 auto;
}

#footer {
    flex-shrink: 0;
    margin-top: auto;
}

/* Accessibility: Focus indicators */
:focus-visible {
    outline: 3px solid var(--bs-primary);
    outline-offset: 2px;
}

/* Navbar improvements */
.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,.05);
}

[data-bs-theme="dark"] .navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,.2);
}

/* Footer styling */
#footer {
    background-color: var(--bs-gray-100);
}

[data-bs-theme="dark"] #footer {
    background-color: var(--bs-gray-900);
    border-top-color: var(--bs-gray-700) !important;
}

/* Skip link visibility on focus */
.visually-hidden-focusable:focus {
    z-index: 1050;
    background-color: var(--bs-body-bg);
    padding: 1rem;
    color: var(--bs-body-color);
    position: absolute;
    top: 0;
    left: 0;
}

/* Transitions for smooth theme switching */
body, .navbar, .card, .modal-content, #footer {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}