/* Keyboard Navigation Enhancement */
.keyboard-nav-enabled {
    outline-style: none;
}

/* Focus Management */
*:focus {
    outline: 3px solid #4A90E2;
    outline-offset: 2px;
    box-shadow: 0 0 0 1px #ffffff, 0 0 0 4px #4A90E2;
}

/* Skip Links */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: #000;
    color: #fff;
    padding: 8px;
    text-decoration: none;
    z-index: 1000;
    border-radius: 4px;
}

.skip-link:focus {
    top: 6px;
    outline: 2px solid #fff;
}

/* Keyboard-only navigation indicators */
.js-keyboard-nav .btn:focus,
.js-keyboard-nav .nav-link:focus,
.js-keyboard-nav input:focus,
.js-keyboard-nav select:focus,
.js-keyboard-nav textarea:focus {
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.5);
    border-color: #4A90E2;
}

/* Tab order optimization */
.main-content {
    -webkit-focus-ring-color: transparent;
}

/* Keyboard shortcuts display */
.keyboard-shortcuts {
    position: fixed;
    top: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 10px;
    border-radius: 4px;
    font-size: 12px;
    z-index: 1001;
    display: none;
}

.keyboard-shortcuts.show {
    display: block;
}