/* 
 * Zen Focus - ADHD-Friendly Habit Tracker
 * Main Stylesheet
 * 
 * This stylesheet implements ADHD-friendly design principles with zen aesthetics:
 * - Clean, minimalist design with ample white space
 * - Calming color palette with soft blues, greens, and neutral tones
 * - Clear visual hierarchy and organization
 * - Responsive design for all devices
 * - Reduced visual distractions
 */

/* ===== Base Styles ===== */
:root {
    /* Color Palette - Soft, calming colors based on research */
    --color-primary: #5c7b93;       /* Soft blue - primary accent */
    --color-secondary: #8ba888;     /* Soft green - secondary accent */
    --color-dark: #2d3c42;          /* Dark blue-gray - text color */
    --color-light: #f5f7f6;         /* Off-white - background color */
    --color-accent: #d0c8b0;        /* Warm beige - subtle accent */
    --color-success: #8ba888;       /* Soft green - success indicators */
    --color-warning: #e6c384;       /* Soft amber - warning indicators */
    --color-error: #c17c74;         /* Soft red - error indicators */
    
    /* Neutral shades */
    --color-gray-100: #f5f7f6;
    --color-gray-200: #e8eceb;
    --color-gray-300: #d1d7d6;
    --color-gray-400: #b0b9b8;
    --color-gray-500: #8c9695;
    --color-gray-600: #6b7372;
    --color-gray-700: #4d5251;
    --color-gray-800: #333635;
    --color-gray-900: #1a1c1b;
    
    /* Typography */
    --font-primary: 'Nunito', sans-serif;
    --font-secondary: 'Raleway', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Border Radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--color-dark);
    background-color: var(--color-light);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    font-weight: 500;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover, a:focus {
    color: var(--color-secondary);
}

ul, ol {
    list-style-position: inside;
    margin-bottom: var(--spacing-md);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button, .btn {
    cursor: pointer;
    font-family: var(--font-primary);
    font-size: 1rem;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    border: none;
    background-color: var(--color-primary);
    color: white;
    transition: all var(--transition-fast);
}

button:hover, .btn:hover {
    background-color: var(--color-secondary);
}

button:focus, .btn:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ===== Layout ===== */
.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    margin-bottom: var(--spacing-lg);
}

.logo h1 {
    margin-bottom: var(--spacing-xs);
    color: var(--color-primary);
}

.tagline {
    font-size: 0.9rem;
    color: var(--color-gray-600);
    margin-bottom: 0;
}

.main-nav {
    display: flex;
    align-items: center;
}

.nav-links {
    display: flex;
    list-style: none;
    margin-bottom: 0;
}

.nav-links li {
    margin-left: var(--spacing-lg);
}

.nav-links a {
    color: var(--color-gray-700);
    font-weight: 500;
    padding: var(--spacing-xs) 0;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-medium);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    background: none;
    color: var(--color-dark);
    font-size: 1.5rem;
    padding: var(--spacing-xs);
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xxl);
}

.footer {
    margin-top: auto;
    padding: var(--spacing-lg) 0;
    background-color: var(--color-gray-200);
    border-top: 1px solid var(--color-gray-300);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    height: 300px;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    margin-bottom: var(--spacing-xl);
    background-image: url('../images/peaceful_mountain_lake.jpg');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.3);
}

.hero-content {
    position: relative;
    z-index: 1;
    color: white;
    padding: var(--spacing-lg);
}

.hero-content h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    color: white;
}

.hero-content p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Quote Section ===== */
.quote-section {
    text-align: center;
    padding: var(--spacing-xl) 0;
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
    border-bottom: 1px solid var(--color-gray-300);
    position: relative;
}

.quote-section blockquote {
    font-size: 1.3rem;
    font-style: italic;
    color: var(--color-gray-700);
    transition: opacity var(--transition-medium);
}

.quote-text {
    margin-bottom: var(--spacing-sm);
}

.quote-section cite {
    font-size: 1rem;
    color: var(--color-gray-600);
    transition: opacity var(--transition-medium);
}

.btn-refresh-quote {
    margin-top: var(--spacing-md);
    background-color: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.btn-refresh-quote:hover {
    background-color: var(--color-primary);
    color: white;
}

.btn-refresh-quote i {
    transition: transform var(--transition-medium);
}

.btn-refresh-quote:hover i {
    transform: rotate(180deg);
}

/* Quote fade animations */
.fade-out {
    opacity: 0;
    transition: opacity 0.5s ease-out;
}

.fade-in {
    opacity: 1;
    transition: opacity 0.5s ease-in;
}

/* ===== Content Sections ===== */
.content-section {
    padding: var(--spacing-lg);
    background-color: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-xl);
}

.section-header {
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.section-header h2 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.section-header p {
    color: var(--color-gray-600);
    font-size: 1.1rem;
}

/* ===== Habit Stats ===== */
.habit-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background-color: var(--color-gray-100);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-medium);
}

.stat-card:hover {
    transform: translateY(-3px);
}

.stat-value {
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-gray-600);
}

/* ===== Habit Section ===== */
.habit-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.habit-card {
    background-color: var(--color-gray-100);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
    position: relative;
}

.habit-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.habit-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.habit-header h3 {
    margin-bottom: 0;
    font-size: 1.2rem;
}

.streak {
    font-size: 0.9rem;
    color: var(--color-primary);
    font-weight: 600;
}

.habit-progress {
    margin-bottom: var(--spacing-md);
}

.progress-bar {
    height: 8px;
    background-color: var(--color-gray-300);
    border-radius: 4px;
    overflow: hidden;
}

.progress {
    height: 100%;
    background-color: var(--color-success);
    border-radius: 4px;
    transition: width var(--transition-medium);
}

.habit-actions {
    display: flex;
    justify-content: space-between;
}

.btn-complete {
    background-color: var(--color-success);
    flex-grow: 1;
    margin-right: var(--spacing-sm);
}

.btn-icon {
    background-color: var(--color-gray-200);
    color: var(--color-gray-700);
    padding: var(--spacing-sm);
}

.add-habit {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-gray-200);
    border: 2px dashed var(--color-gray-400);
}

.btn-add {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: none;
    color: var(--color-gray-600);
    gap: var(--spacing-sm);
}

.btn-add:hover {
    background-color: var(--color-gray-300);
    color: var(--color-gray-800);
}

.btn-add i {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

/* Habit Card Menu */
.habit-menu-dropdown {
    position: absolute;
    top: calc(var(--spacing-lg) + 40px);
    right: var(--spacing-lg);
    background-color: white;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    z-index: 10;
    display: none;
    min-width: 150px;
}

.habit-menu-dropdown.active {
    display: block;
}

.habit-menu-dropdown ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.habit-menu-dropdown li {
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: background-color var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.habit-menu-dropdown li:hover {
    background-color: var(--color-gray-200);
}

.habit-menu-dropdown li:first-child {
    border-top-left-radius: var(--border-radius-md);
    border-top-right-radius: var(--border-radius-md);
}

.habit-menu-dropdown li:last-child {
    border-bottom-left-radius: var(--border-radius-md);
    border-bottom-right-radius: var(--border-radius-md);
}

.delete-habit {
    color: var(--color-error);
}

/* Habit Completion Animation */
.habit-completed-animation {
    animation: pulse 0.5s ease-in-out;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.confetti {
    position: absolute;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    animation: confetti-fall 2s ease-in-out forwards;
    z-index: 5;
}

@keyframes confetti-fall {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100px) rotate(720deg);
        opacity: 0;
    }
}

/* Completed Habit Styling */
.habit-card.completed .progress {
    background-color: var(--color-success);
}

.habit-card.completed {
    border-left: 4px solid var(--color-success);
}

/* ===== Modal Styles ===== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-medium), visibility var(--transition-medium);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: translateY(20px);
    transition: transform var(--transition-medium);
    box-shadow: var(--shadow-lg);
}

.modal.active .modal-content {
    transform: translateY(0);
}

.close-modal {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-gray-600);
    transition: color var(--transition-fast);
}

.close-modal:hover {
    color: var(--color-gray-900);
}

.modal h2 {
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-gray-700);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
}

.btn-cancel {
    background-color: var(--color-gray-300);
    color: var(--color-gray-700);
}

.btn-save {
    background-color: var(--color-primary);
}

.progress-value {
    display: inline-block;
    margin-left: var(--spacing-sm);
    font-weight: 500;
    color: var(--color-gray-700);
}

/* ===== Music Player Section ===== */
.music-player {
    background-color: var(--color-gray-100);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.current-track {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.track-image {
    width: 100px;
    height: 100px;
    border-radius: var(--border-radius-md);
    object-fit: cover;
    margin-right: var(--spacing-lg);
    transition: transform var(--transition-medium);
}

.track-image:hover {
    transform: scale(1.05);
}

.track-info {
    flex: 1;
}

.track-title {
    margin-bottom: var(--spacing-xs);
}

.track-description {
    color: var(--color-gray-600);
    margin-bottom: 0;
}

.player-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    gap: var(--spacing-md);
}

.control-btn {
    background: none;
    color: var(--color-gray-700);
    font-size: 1.2rem;
    padding: var(--spacing-sm);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.control-btn:hover {
    background-color: var(--color-gray-300);
}

.play-btn {
    background-color: var(--color-primary);
    color: white;
    font-size: 1.5rem;
    width: 50px;
    height: 50px;
    transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.play-btn:hover {
    background-color: var(--color-secondary);
}

.play-btn:active {
    transform: scale(0.95);
}

.volume-control {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    gap: var(--spacing-sm);
}

.volume-slider {
    flex: 1;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background-color: var(--color-gray-300);
    border-radius: 2px;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--color-primary);
    cursor: pointer;
}

.volume-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--color-primary);
    cursor: pointer;
    border: none;
}

.track-list {
    background-color: white;
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
}

.track-list h4 {
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
    color: var(--color-gray-700);
}

.track-list ul {
    list-style: none;
    margin-bottom: 0;
}

.track-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.track-item:hover {
    background-color: var(--color-gray-200);
}

.track-item.active {
    background-color: var(--color-gray-200);
    font-weight: 600;
    color: var(--color-primary);
}

.track-name {
    flex: 1;
}

.track-duration {
    color: var(--color-gray-600);
    font-size: 0.9rem;
}

/* ===== Wisdom Section ===== */
.wisdom-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.wisdom-card {
    background-color: var(--color-gray-100);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.wisdom-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.wisdom-card blockquote {
    font-style: italic;
    margin-bottom: var(--spacing-md);
}

.wisdom-card cite {
    display: block;
    text-align: right;
    font-size: 0.9rem;
    color: var(--color-gray-600);
}

.wisdom-theme {
    display: inline-block;
    font-size: 0.8rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--color-accent);
    color: var(--color-gray-700);
    border-radius: var(--border-radius-sm);
    margin-top: var(--spacing-md);
}

.btn-refresh {
    grid-column: 1 / -1;
    justify-self: center;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

/* ===== Zen Reminder Styles ===== */
.reminder-settings {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-300);
    text-align: center;
}

.reminder-settings h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.reminder-settings p {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
}

.reminder-options {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-lg);
}

.reminder-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.reminder-option label {
    color: var(--color-gray-700);
    cursor: pointer;
}

.reminder-option input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.reminder-option select {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--border-radius-sm);
    background-color: white;
    color: var(--color-gray-700);
    font-family: var(--font-primary);
}

/* Zen Reminder Notification */
.zen-reminder {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: white;
    border-left: 4px solid var(--color-primary);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    max-width: 300px;
    transform: translateX(120%);
    transition: transform var(--transition-medium);
}

.zen-reminder.active {
    transform: translateX(0);
}

.reminder-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.reminder-content i {
    color: var(--color-primary);
    font-size: 1.2rem;
}

.reminder-content p {
    flex: 1;
    margin: 0;
    font-size: 0.9rem;
}

.close-reminder {
    background: none;
    border: none;
    color: var(--color-gray-600);
    cursor: pointer;
    padding: var(--spacing-xs);
    font-size: 1rem;
}

.close-reminder:hover {
    color: var(--color-gray-900);
}

/* Breathing animation for focus */
.breathing-animation {
    animation: breathing 8s ease-in-out infinite;
}

@keyframes breathing {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .logo {
        margin-bottom: var(--spacing-md);
    }
    
    .menu-toggle {
        display: block;
        position: absolute;
        top: var(--spacing-md);
        right: var(--spacing-md);
    }
    
    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        margin-top: var(--spacing-md);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links li {
        margin-left: 0;
        margin-bottom: var(--spacing-sm);
    }
    
    .hero {
        height: 250px;
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .habit-container,
    .wisdom-container {
        grid-template-columns: 1fr;
    }
    
    .current-track {
        flex-direction: column;
        text-align: center;
    }
    
    .track-image {
        margin-right: 0;
        margin-bottom: var(--spacing-md);
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .habit-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .reminder-options {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }
    
    .zen-reminder {
        max-width: 90%;
        left: 5%;
        right: 5%;
        transform: translateY(120%);
    }
    
    .zen-reminder.active {
        transform: translateY(0);
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .habit-container,
    .wisdom-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ===== Accessibility Enhancements ===== */
:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.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;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-primary: #0056b3;
        --color-secondary: #006400;
        --color-dark: #000000;
        --color-light: #ffffff;
    }
    
    .hero::before {
        background-color: rgba(0, 0, 0, 0.6);
    }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}