/* ============================================
   UX ENHANCEMENTS STYLES - Optimized
   ============================================ */

/* Keyboard Shortcuts Hint */
.keyboard-hint {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    background: #2a2a2a;
    border: 1px solid #4a4a4a;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

.hint-toggle {
    display: block;
    padding: 10px 15px;
    cursor: pointer;
    font-size: 24px;
    background: none;
    border: none;
    transition: transform 0.2s;
}

.hint-toggle:hover { transform: scale(1.1); }

.hint-content {
    padding: 15px;
    max-width: 300px;
}

.hint-content h4 {
    margin: 0 0 10px 0;
    color: #4CAF50;
    font-size: 14px;
}

.hint-content ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.hint-content li {
    padding: 5px 0;
    font-size: 12px;
    color: #cccccc;
}

.hint-content kbd {
    background: #1a1a1a;
    border: 1px solid #555;
    border-radius: 3px;
    padding: 2px 6px;
    font-family: 'Consolas', monospace;
    font-size: 11px;
    color: #ffffff;
    margin-right: 8px;
}

/* Compact Mode Toggle Button */
.compact-toggle {
    background: #2a2a2a;
    border: 1px solid #4a4a4a;
    border-radius: 4px;
    color: #cccccc;
    padding: 8px 15px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s;
}

.compact-toggle:hover {
    background: #3a3a3a;
    border-color: #666666;
    color: #ffffff;
}

/* Compact Mode Styles - Condensed */
body.compact-mode .section { padding: 10px; }
body.compact-mode .section h2 { font-size: 14px; margin-bottom: 8px; }
body.compact-mode .input-group { margin-bottom: 8px; }
body.compact-mode .input-group label { font-size: 11px; }
body.compact-mode .input-group input { padding: 4px 8px; font-size: 12px; }
body.compact-mode .result-item { padding: 6px 10px; }
body.compact-mode .result-label,
body.compact-mode .result-value { font-size: 11px; }
body.compact-mode .hex-calculator { display: none; }
body.compact-mode .tab { padding: 6px 12px; font-size: 12px; }
body.compact-mode .formula-item { padding: 4px 8px; font-size: 11px; }

/* Context Menu - Condensed */
.context-menu {
    position: fixed;
    background: #2a2a2a;
    border: 1px solid #4a4a4a;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    z-index: 10000;
    min-width: 250px;
    padding: 4px 0;
}

.context-menu-header {
    padding: 8px 12px;
    font-size: 11px;
    color: #888888;
    font-weight: bold;
    border-bottom: 1px solid #3a3a3a;
    text-transform: uppercase;
}

.context-menu-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 12px;
    cursor: pointer;
    transition: background-color 0.2s;
    font-size: 12px;
}

.context-menu-item:hover { background: #3a3a3a; }

.format-label { color: #888888; font-weight: bold; margin-right: 15px; }
.format-value { color: #4CAF50; font-family: 'Consolas', monospace; font-weight: bold; }

/* Notification System - Condensed */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 12px 20px;
    background: #2a2a2a;
    border: 1px solid #4a4a4a;
    border-radius: 6px;
    color: #ffffff;
    font-size: 13px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    z-index: 10001;
    opacity: 0;
    transform: translateX(400px);
    transition: all 0.3s ease;
}

.notification.show { opacity: 1; transform: translateX(0); }
.notification-success { border-left: 4px solid #4CAF50; }
.notification-info { border-left: 4px solid #2196F3; }
.notification-warning { border-left: 4px solid #FF9800; }
.notification-error { border-left: 4px solid #F44336; }

/* Hover effects & Responsive - Condensed */
.result-value, .conv-value { cursor: pointer; transition: background-color 0.3s; }
.result-value:hover, .conv-value:hover { background-color: rgba(76, 175, 80, 0.1); }

button:focus-visible,
input:focus-visible,
.tab:focus-visible { outline: 2px solid #4CAF50; outline-offset: 2px; }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Responsive */
@media (max-width: 768px) {
    .keyboard-hint, .notification { bottom: 10px; right: 10px; }
    .notification { top: 10px; max-width: calc(100% - 20px); }
}

@media print {
    .keyboard-hint,
    .compact-toggle,
    .context-menu,
    .notification { display: none !important; }
}