/* Dark Mode and Accessibility Styles for CalcHub */

/* CSS Variables for theme colors */
:root {
    /* Base colors */
    --primary-color: #1a73e8;
    --secondary-color: #00b8d4;
    --text-color: #333333;
    --background-color: #ffffff;
    --card-background: #ffffff;
    --border-color: #e0e0e0;
    --input-background: #f5f5f5;
    --hover-color: #f8f9fa;
    
    /* Font size multiplier (controlled by accessibility settings) */
    --font-size-multiplier: 1;
    
    /* Transition settings */
    --transition-speed: 0.3s;
}

/* Dark mode theme */
.dark-mode {
    --primary-color: #4285f4;
    --secondary-color: #00e5ff;
    --text-color: #e0e0e0;
    --background-color: #121212;
    --card-background: #1e1e1e;
    --border-color: #333333;
    --input-background: #2d2d2d;
    --hover-color: #2a2a2a;
}

/* High contrast theme */
.high-contrast {
    --primary-color: #0000ff;
    --secondary-color: #00ffff;
    --text-color: #000000;
    --background-color: #ffffff;
    --card-background: #ffffff;
    --border-color: #000000;
    --input-background: #ffffff;
    --hover-color: #eeeeee;
}

/* Dark mode + high contrast */
.dark-mode.high-contrast {
    --primary-color: #ffff00;
    --secondary-color: #00ffff;
    --text-color: #ffffff;
    --background-color: #000000;
    --card-background: #000000;
    --border-color: #ffffff;
    --input-background: #000000;
    --hover-color: #333333;
}

/* Apply theme colors to elements */
body {
    background-color: var(--background-color);
    color: var(--text-color);
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

.navbar, footer {
    background-color: var(--card-background);
    border-color: var(--border-color);
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.card, .calculator-container, .calculator-card {
    background-color: var(--card-background);
    border-color: var(--border-color);
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

input, select, textarea, button {
    background-color: var(--input-background);
    color: var(--text-color);
    border-color: var(--border-color);
    transition: background-color var(--transition-speed), color var(--transition-speed), border-color var(--transition-speed);
}

a {
    color: var(--primary-color);
    transition: color var(--transition-speed);
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
    transition: color var(--transition-speed), border-color var(--transition-speed);
}

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Font size adjustments */
body {
    font-size: calc(16px * var(--font-size-multiplier));
}

h1 {
    font-size: calc(2rem * var(--font-size-multiplier));
}

h2 {
    font-size: calc(1.75rem * var(--font-size-multiplier));
}

h3 {
    font-size: calc(1.5rem * var(--font-size-multiplier));
}

h4 {
    font-size: calc(1.25rem * var(--font-size-multiplier));
}

p, li, input, select, textarea, button {
    font-size: calc(1rem * var(--font-size-multiplier));
}

.small, small {
    font-size: calc(0.875rem * var(--font-size-multiplier));
}

/* Dyslexic font */
.dyslexic-font {
    font-family: 'OpenDyslexic', sans-serif;
}

/* Reduce motion */
.reduce-motion * {
    transition: none !important;
    animation: none !important;
}

/* Dark mode toggle */
.dark-mode-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    margin-left: 10px;
    border-radius: 50%;
    cursor: pointer;
    color: var(--text-color);
    background-color: var(--input-background);
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

.dark-mode-toggle:hover {
    background-color: var(--hover-color);
}

/* Accessibility button */
.accessibility-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    margin-left: 10px;
    border-radius: 50%;
    cursor: pointer;
    color: var(--text-color);
    background-color: var(--input-background);
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

.accessibility-button:hover {
    background-color: var(--hover-color);
}

/* Accessibility menu */
.accessibility-menu {
    position: fixed;
    top: 60px;
    right: -320px;
    width: 320px;
    max-height: calc(100vh - 70px);
    overflow-y: auto;
    background-color: var(--card-background);
    border-left: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    box-shadow: -2px 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: right var(--transition-speed);
}

.accessibility-menu.open {
    right: 0;
}

.accessibility-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
}

.accessibility-menu-header h3 {
    margin: 0;
    font-size: calc(1.25rem * var(--font-size-multiplier));
}

.close-accessibility-menu {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-color);
}

.accessibility-menu-content {
    padding: 15px;
}

.accessibility-option {
    margin-bottom: 20px;
}

.accessibility-option label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.font-size-value {
    display: inline-block;
    margin-top: 5px;
    font-size: calc(0.875rem * var(--font-size-multiplier));
    color: var(--primary-color);
}

/* Toggle switch */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
    background-color: #ccc;
    border-radius: 12px;
    cursor: pointer;
    transition: background-color var(--transition-speed);
}

.toggle-switch[aria-checked="true"] {
    background-color: var(--primary-color);
}

.toggle-slider {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background-color: white;
    border-radius: 50%;
    transition: transform var(--transition-speed);
}

.toggle-switch[aria-checked="true"] .toggle-slider {
    transform: translateX(26px);
}

/* Keyboard shortcuts section */
.keyboard-shortcuts {
    background-color: var(--input-background);
    padding: 15px;
    border-radius: 8px;
    margin-top: 20px;
}

.keyboard-shortcuts h4 {
    margin-top: 0;
    margin-bottom: 10px;
}

.keyboard-shortcuts ul {
    list-style-type: none;
    padding-left: 0;
    margin-bottom: 0;
}

.keyboard-shortcuts li {
    margin-bottom: 8px;
}

.keyboard-shortcuts kbd {
    display: inline-block;
    padding: 3px 6px;
    font-family: 'Roboto Mono', monospace;
    font-size: calc(0.75rem * var(--font-size-multiplier));
    line-height: 1;
    color: var(--text-color);
    background-color: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
}

/* Reset button */
.reset-accessibility-settings {
    display: block;
    width: 100%;
    padding: 8px;
    margin-top: 20px;
    background-color: var(--input-background);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: background-color var(--transition-speed);
}

.reset-accessibility-settings:hover {
    background-color: var(--hover-color);
}

/* Skip to content link */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    padding: 8px 16px;
    background-color: var(--primary-color);
    color: white;
    z-index: 1001;
    transition: top 0.3s;
}

.skip-to-content:focus {
    top: 0;
}

/* Media queries for responsive design */
@media (max-width: 768px) {
    .accessibility-menu {
        width: 280px;
    }
}

@media (max-width: 576px) {
    .accessibility-menu {
        width: 100%;
        right: -100%;
    }
    
    .dark-mode-toggle,
    .accessibility-button {
        width: 36px;
        height: 36px;
    }
}