/* Accessibility Floating Button */
.accessibility-float-btn {
    position: fixed;
    bottom: 140px; /* Positioned above the AI chatbot button */
    right: var(--spacing-xl);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    color: white;
    border: none;
    font-size: var(--font-size-xl);
    cursor: pointer;
    box-shadow: var(--shadow-large);
    transition: var(--transition-normal);
    z-index: 1001;
    display: flex;
    align-items: center;
    justify-content: center;
}

.accessibility-float-btn:hover,
.accessibility-float-btn:focus {
    transform: scale(1.1);
    background: linear-gradient(135deg, #3730a3, #5b21b6);
}

.accessibility-float-btn.active {
    background: linear-gradient(135deg, #059669, #0d9488);
}

/* Accessibility Toolbar - Updated for floating design */
.accessibility-toolbar {
    position: fixed;
    bottom: 210px; /* Above the floating button */
    right: var(--spacing-xl);
    background: rgba(0, 0, 0, 0.95);
    color: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    display: none; /* Hidden by default */
    flex-direction: column;
    gap: var(--spacing-sm);
    z-index: 1002;
    box-shadow: var(--shadow-large);
    min-width: 200px;
    transform: translateY(20px);
    opacity: 0;
    transition: all var(--transition-normal);
}

.accessibility-toolbar.active {
    display: flex;
    transform: translateY(0);
    opacity: 1;
}

.accessibility-btn {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    transition: var(--transition-fast);
    width: 100%;
    justify-content: flex-start;
}

.accessibility-btn:hover,
.accessibility-btn:focus {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
}

.accessibility-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.accessibility-btn i {
    font-size: var(--font-size-base);
    min-width: 20px;
}

.accessibility-btn span {
    font-size: var(--font-size-sm);
}

/* High Contrast Mode */
body.high-contrast {
    --primary-color: #0000ff;
    --secondary-color: #800080;
    --accent-color: #008000;
    --text-primary: #000000;
    --text-secondary: #000000;
    --background-light: #ffffff;
    --background-gray: #f0f0f0;
    --border-color: #000000;
}

body.high-contrast .hero {
    background: #000000;
    color: #ffffff;
}

body.high-contrast .btn-primary {
    background-color: #0000ff;
    color: #ffffff;
    border: 2px solid #000000;
}

body.high-contrast .btn-secondary {
    background-color: #ffffff;
    color: #000000;
    border: 2px solid #000000;
}

body.high-contrast .btn-outline {
    background-color: #ffffff;
    color: #000000;
    border: 2px solid #000000;
}

body.high-contrast .diversity-card,
body.high-contrast .tech-item {
    border: 2px solid #000000;
}

body.high-contrast .nav-menu a:hover,
body.high-contrast .nav-menu a:focus {
    background-color: #000000;
    color: #ffffff;
}

body.high-contrast .card-link:hover,
body.high-contrast .card-link:focus {
    background-color: #000000;
    color: #ffffff;
    padding: var(--spacing-xs) var(--spacing-sm);
}

/* Large Font Mode */
body.large-font {
    font-size: 1.25rem;
}

body.large-font .hero-title {
    font-size: 3rem;
}

body.large-font .hero-subtitle {
    font-size: 1.5rem;
}

body.large-font section h2 {
    font-size: 2.5rem;
}

body.large-font .diversity-card h3,
body.large-font .tech-item h3 {
    font-size: 1.5rem;
}

body.large-font .btn {
    font-size: 1.125rem;
    padding: var(--spacing-lg) var(--spacing-2xl);
}

body.large-font .nav-menu a {
    font-size: 1.125rem;
}

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

/* Focus Indicators */
.focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* Voice Command Indicator */
.voice-listening {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.9);
    color: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    text-align: center;
    z-index: 1003;
    display: none;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    border: 2px solid var(--primary-color);
}

.voice-listening.active {
    display: block;
    animation: fadeIn 0.3s ease-in;
}

.voice-listening .pulse {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary-color);
    margin: 0 auto var(--spacing-md);
    animation: pulse 1.5s infinite;
}

.voice-listening p {
    margin: 0;
    font-size: var(--font-size-base);
    font-weight: 500;
}

/* Voice Error Messages */
.voice-error {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #dc3545;
    color: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    z-index: 1004;
    max-width: 300px;
    box-shadow: 0 4px 12px rgba(220, 53, 69, 0.3);
    animation: slideInRight 0.3s ease-out;
}

.voice-error::before {
    content: "⚠️ ";
    margin-right: var(--spacing-xs);
}

/* Voice Commands Button States */
.accessibility-btn[aria-pressed="true"] {
    background: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(var(--primary-color-rgb), 0.5);
}

.accessibility-btn[aria-pressed="true"]::after {
    content: " (Ativo)";
    font-size: var(--font-size-xs);
    opacity: 0.8;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.7;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Reading Highlight */
.reading-highlight {
    background-color: #ffff00 !important;
    color: #000000 !important;
    padding: 2px 4px;
    border-radius: var(--radius-sm);
}

/* Keyboard Navigation Styles */
.keyboard-navigation *:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
    z-index: 1;
    position: relative;
}

/* Skip Links */
.skip-links {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-sm);
    z-index: 1004;
}

.skip-links:focus-within {
    top: 0;
}

.skip-links a {
    color: white;
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    margin-right: var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.skip-links a:focus {
    background: rgba(255, 255, 255, 0.2);
}

/* Motion Preferences */
@media (prefers-reduced-motion: reduce) {
    .pulse {
        animation: none;
    }
    
    .diversity-card:hover,
    .tech-item:hover,
    .demo-button:hover,
    .ai-chatbot-btn:hover {
        transform: none;
    }
}

/* Color Preferences */
@media (prefers-color-scheme: dark) {
    body:not(.high-contrast) {
        --text-primary: #f9fafb;
        --text-secondary: #d1d5db;
        --background-light: #1f2937;
        --background-gray: #111827;
        --border-color: #374151;
    }
}

/* Responsive Accessibility Toolbar */
@media (max-width: 768px) {
    .accessibility-toolbar {
        flex-wrap: wrap;
        padding: var(--spacing-xs);
        gap: var(--spacing-xs);
    }
    
    .accessibility-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
    
    .accessibility-btn span {
        display: none;
    }
}

/* Print Styles */
@media print {
    .accessibility-toolbar,
    .ai-chatbot-btn,
    .chatbot-modal {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .hero {
        background: white !important;
        color: black !important;
    }
}

/* Text Selection */
::selection {
    background-color: var(--primary-color);
    color: white;
}

::-moz-selection {
    background-color: var(--primary-color);
    color: white;
}

/* Custom Scrollbar for Better Accessibility */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--background-gray);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* Tooltip Styles for Accessibility */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 200px;
    background-color: var(--text-primary);
    color: var(--background-light);
    text-align: center;
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -100px;
    opacity: 0;
    transition: opacity var(--transition-fast);
    font-size: var(--font-size-sm);
}

.tooltip:hover .tooltiptext,
.tooltip:focus .tooltiptext {
    visibility: visible;
    opacity: 1;
}

/* Error and Success States */
.error {
    color: #dc2626;
    border-color: #dc2626;
}

.success {
    color: #059669;
    border-color: #059669;
}

.warning {
    color: #d97706;
    border-color: #d97706;
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}