/* Accessibility Styles */

:root {
    --a11y-bg: #ffffff;
    --a11y-text: #000000;
    --a11y-accent: #0000ff;
    --base-font-size: 16px;
}

body {
    font-size: var(--base-font-size);
}

/* Accessibility Overrides & Utilities */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Ensure focus states are visible for keyboard users */
#user-input:focus {
    outline: none;
}

.chat-input-container:focus-within {
    outline: 2px solid var(--theme-color-1);
    outline-offset: 2px;
}

#send-btn:focus-visible {
    outline: 3px solid var(--theme-color-1);
    outline-offset: 4px;
}

/* High Contrast Mode Adjustments */

/* Accessibility Widget */
.a11y-widget {
    position: fixed;
    bottom: 20px;
    left: 20px;
    z-index: 10000;
    font-family: 'Inter', 'Roboto', sans-serif;
}

.a11y-toggle {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: #1f2937;
    color: white;
    border: 2px solid white;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.a11y-toggle:hover {
    transform: scale(1.1);
}

.a11y-menu {
    position: absolute;
    bottom: 60px;
    left: 0;
    background: white;
    border-radius: 12px;
    padding: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    width: 220px;
    display: none;
    flex-direction: column;
    gap: 12px;
    border: 1px solid #e5e7eb;
}

.a11y-menu.show {
    display: flex;
}

.a11y-menu h3 {
    margin: 0 0 5px 0;
    font-size: 1rem;
    color: #1f2937;
}

.a11y-controls {
    display: flex;
    gap: 8px;
}

.a11y-btn {
    flex: 1;
    padding: 8px;
    border-radius: 6px;
    border: 1px solid #d1d5db;
    background: #f9fafb;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.2s;
}

.a11y-btn:hover {
    background: #e5e7eb;
}

.a11y-mode-toggle {
    width: 100%;
    padding: 10px;
    border-radius: 6px;
    border: none;
    background: #1f2937;
    color: white;
    cursor: pointer;
    font-weight: 600;
}

/* Accessible Mode Overrides */
body.a11y-mode {
    background: #f0f0f0 !important;
    color: #000000 !important;
}

body.a11y-mode .aurora-bg {
    display: none !important;
}

body.a11y-mode .app-container, 
body.a11y-mode .intro-container,
body.a11y-mode .timeline-content,
body.a11y-mode .quiz-card,
body.a11y-mode .region-selector-wrapper {
    background: #ffffff !important;
    backdrop-filter: none !important;
    border: 3px solid #000000 !important;
    box-shadow: none !important;
    color: #000000 !important;
}

body.a11y-mode .primary-btn,
body.a11y-mode .btn.primary-btn,
body.a11y-mode .option-btn.primary {
    background: #000000 !important;
    color: #ffffff !important;
    border: 2px solid #ffffff !important;
    box-shadow: none !important;
}

body.a11y-mode .secondary-btn,
body.a11y-mode .btn.secondary-btn {
    background: #ffffff !important;
    color: #000000 !important;
    border: 3px solid #000000 !important;
    box-shadow: none !important;
}

body.a11y-mode * {
    animation: none !important;
    transition: none !important;
}

body.a11y-mode .message-bubble {
    border: 2px solid #000000 !important;
    box-shadow: none !important;
}

body.a11y-mode .user .message-bubble {
    background: #000000 !important;
    color: #ffffff !important;
}

body.a11y-mode .bot .message-bubble {
    background: #ffffff !important;
    color: #000000 !important;
}

/* Keyboard Focus */
*:focus-visible {
    outline: 4px solid #3b82f6 !important;
    outline-offset: 2px !important;
}