========================================
   ORGANS EXPLORER - LIVER ANATOMY STYLES
   Medical Education Website
   ======================================== */

/* ==================== ROOT VARIABLES ==================== */
:root {
    /* Medical Color Palette */
    --primary-color: #8B4513;        /* Liver brown */
    --primary-dark: #6B3410;
    --primary-light: #A0522D;
    --secondary-color: #2C5F8D;      /* Medical blue */
    --accent-color: #DC143C;         /* Crimson red for blood */
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    
    /* Neutral Colors */
    --bg-color: #F8F9FA;
    --white: #FFFFFF;
    --light-gray: #E9ECEF;
    --gray: #6C757D;
    --dark-gray: #343A40;
    --text-color: #212529;
    
    /* Segment Colors */
    --segment-caudate: #9B59B6;
    --segment-left: #3498DB;
    --segment-right: #E74C3C;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.15);
    --shadow-xl: 0 12px 24px rgba(0,0,0,0.18);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-round: 50%;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ==================== GLOBAL STYLES ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-primary);
    line-height: var(--line-height-base);
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ==================== TYPOGRAPHY ==================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
    color: var(--text-color);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

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

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

a:hover {
    color: var(--primary-color);
}

/* ==================== HEADER ==================== */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: var(--spacing-md) 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
}

.logo i {
    font-size: 2rem;
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

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

.nav a {
    color: var(--white);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav a:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    background-color: var(--primary-dark);
    padding: var(--spacing-md);
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    z-index: 999;
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    transition: transform var(--transition-normal);
}

.mobile-menu.active {
    transform: translateY(0);
}

.mobile-menu a {
    display: block;
    color: var(--white);
    padding: var(--spacing-sm);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* ==================== HERO SECTION ==================== */
.hero {
    background: linear-gradient(135deg, #8B4513 0%, #A0522D 50%, #CD853F 100%);
    color: var(--white);
    padding: var(--spacing-xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><path d="M0,300 Q300,200 600,300 T1200,300 L1200,600 L0,600 Z" fill="rgba(255,255,255,0.05)"/></svg>') no-repeat center bottom;
    background-size: cover;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.organ-badge {
    display: inline-block;
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-round);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    backdrop-filter: blur(10px);
    border: 3px solid rgba(255, 255, 255, 0.3);
}

.organ-badge i {
    font-size: 3rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.page-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.tagline {
    font-size: 1.25rem;
    font-weight: 300;
    margin-bottom: var(--spacing-md);
    opacity: 0.95;
}

.hero-description {
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
    font-size: 1.1rem;
    line-height: 1.8;
    opacity: 0.9;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    max-width: 800px;
    margin: 0 auto;
}

.stat-item {
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform var(--transition-fast);
}

.stat-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* ==================== MAIN CONTENT ==================== */
.main-content {
    padding: var(--spacing-xl) 0;
}

/* Quick Navigation */
.quick-nav {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-xl);
}

.quick-nav h3 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.quick-nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-sm);
}

.quick-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    background: var(--light-gray);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    text-align: center;
}

.quick-nav-item:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.quick-nav-item i {
    font-size: 1.5rem;
}

/* Content Sections */
.content-section {
    margin-bottom: var(--spacing-xl);
    scroll-margin-top: 100px;
}

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

.section-label {
    display: inline-block;
    background: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.section-header h2 {
    color: var(--primary-dark);
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

/* Info Cards */
.info-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.info-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.info-card h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.info-card h3 i {
    font-size: 1.5rem;
}

.info-card h4 {
    color: var(--secondary-color);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.highlight-card {
    border-left: 4px solid var(--primary-color);
}

.summary-card {
    background: linear-gradient(135deg, #FFF8DC 0%, #FAEBD7 100%);
}

/* Lists */
.detailed-list,
.overview-list {
    list-style-position: outside;
    padding-left: var(--spacing-lg);
}

.detailed-list li,
.overview-list li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

.detailed-list ul,
.overview-list ul {
    margin-top: var(--spacing-xs);
    margin-left: var(--spacing-md);
}

.detailed-list strong {
    color: var(--primary-dark);
}

/* Highlight Boxes */
.highlight-box {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
    border-left: 4px solid;
}

.highlight-box.info {
    background-color: #E7F5FE;
    border-color: var(--info-color);
}

.highlight-box.success {
    background-color: #D4EDDA;
    border-color: var(--success-color);
}

.highlight-box.warning {
    background-color: #FFF3CD;
    border-color: var(--warning-color);
}

.highlight-box p {
    margin-bottom: var(--spacing-sm);
}

.highlight-box ul {
    margin-left: var(--spacing-md);
}

/* Grids */
.characteristics-grid,
.importance-grid,
.relation-grid,
.feature-grid,
.impressions-grid,
.lobes-grid,
.segments-detailed,
.ligaments-grid,
.clinical-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.char-item,
.importance-item,
.relation-card,
.feature-item,
.impression-item {
    background: var(--light-gray);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.char-item:hover,
.importance-item:hover,
.relation-card:hover,
.feature-item:hover,
.impression-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.char-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.char-label {
    font-size: 0.875rem;
    color: var(--gray);
    margin-bottom: var(--spacing-xs);
}

.char-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: var(--spacing-xs);
}

.char-detail {
    font-size: 0.875rem;
    color: var(--gray);
}

/* Lobes Cards */
.lobe-card,
.segment-card,
.ligament-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.lobe-card:hover,
.segment-card:hover,
.ligament-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.lobe-header,
.ligament-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.lobe-header h3,
.ligament-header h3 {
    color: var(--white);
    margin: 0;
}

.lobe-badge,
.ligament-badge,
.segment-badge {
    background: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
}

.lobe-content,
.ligament-content {
    padding: var(--spacing-md);
}

.clinical-note,
.remember-note {
    background: #FFF8DC;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--warning-color);
    font-style: italic;
}

/* Comparison Box */
.comparison-box {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.compare-item {
    background: var(--light-gray);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
}

.compare-item h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

/* Segments */
.segment-card {
    margin-bottom: var(--spacing-md);
}

.segment-number {
    display: inline-block;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: var(--radius-round);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.segment-card.caudate .segment-number {
    background: var(--segment-caudate);
}

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

.group-title {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #1E4A6D 100%);
    color: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.segment-info {
    padding: var(--spacing-md);
}

/* Tables */
.summary-table,
.comparison-table,
.arrangement-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0;
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.summary-table th,
.comparison-table th,
.arrangement-table th {
    background: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    font-weight: 600;
}

.summary-table td,
.comparison-table td,
.arrangement-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--light-gray);
}

.summary-table tr:hover,
.comparison-table tr:hover,
.arrangement-table tr:hover {
    background-color: var(--light-gray);
}

/* Memory Tricks */
.memory-tricks {
    display: grid;
    gap: var(--spacing-md);
}

.trick-item {
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--success-color);
}

.trick-item h4 {
    color: var(--success-color);
    margin-bottom: var(--spacing-sm);
}

/* Surface & Border Cards */
.surface-card,
.border-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-md);
}

.surface-card h3,
.border-card h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.surface-details,
.border-details {
    margin-top: var(--spacing-md);
}

.detail-section {
    margin-bottom: var(--spacing-md);
}

.detail-section h4 {
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
}

/* Clinical Cards */
.clinical-points,
.clinical-grid {
    display: grid;
    gap: var(--spacing-md);
}

.clinical-card {
    background: #FFF8F0;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--accent-color);
}

.clinical-card h4 {
    color: var(--accent-color);
    margin-bottom: var(--spacing-sm);
}

/* Structures Grid */
.structures-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.structure-card {
    background: var(--light-gray);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

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

.structure-card.exiting {
    border-left: 4px solid var(--info-color);
}

.structure-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.structure-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

/* Flow Diagrams */
.flow-diagram,
.branching-diagram,
.drainage-pathway,
.arterial-pathway {
    margin: var(--spacing-lg) 0;
}

.flow-step,
.branch-level,
.pathway-step {
    margin-bottom: var(--spacing-md);
}

.flow-box {
    background: var(--light-gray);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    font-weight: 600;
    border: 2px solid var(--primary-color);
}

.arrow,
.arrow-down {
    text-align: center;
    color: var(--primary-color);
    font-size: 1.5rem;
    margin: var(--spacing-sm) 0;
}

.branch-grid,
.veins-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.branch-item,
.vein-card {
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 2px solid var(--primary-light);
}

/* Supply Items */
.dual-supply-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.supply-item {
    background: var(--light-gray);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
}

.supply-item h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

/* Intro Text */
.intro-text {
    font-size: 1.1rem;
    color: var(--gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

/* ==================== FOOTER ==================== */
.footer {
    background: linear-gradient(135deg, var(--dark-gray) 0%, var(--text-color) 100%);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

/* ==================== SCROLL TO TOP ==================== */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: var(--radius-round);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 999;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
}

/* ==================== RESPONSIVE DESIGN ==================== */
@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .tagline {
        font-size: 1rem;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .quick-nav-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .section-header h2 {
        font-size: 1.75rem;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    .characteristics-grid,
    .importance-grid,
    .relation-grid,
    .feature-grid,
    .impressions-grid,
    .lobes-grid,
    .ligaments-grid,
    .clinical-grid {
        grid-template-columns: 1fr;
    }
    
    .summary-table,
    .comparison-table,
    .arrangement-table {
        font-size: 0.875rem;
    }
    
    .summary-table th,
    .summary-table td,
    .comparison-table th,
    .comparison-table td,
    .arrangement-table th,
    .arrangement-table td {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .quick-nav-grid {
        grid-template-columns: 1fr;
    }
    
    .page-title {
        font-size: 1.75rem;
    }
    
    .organ-badge {
        width: 80px;
        height: 80px;
    }
    
    .organ-badge i {
        font-size: 2.5rem;
    }
}

/* ==================== PRINT STYLES ==================== */
@media print {
    .header,
    .footer,
    .quick-nav,
    .scroll-to-top,
    .menu-toggle,
    .mobile-menu {
        display: none;
    }
    
    .main-content {
        padding: 0;
    }
    
    .info-card,
    .lobe-card,
    .segment-card,
    .ligament-card {
        break-inside: avoid;
        page-break-inside: avoid;
    }
    
    body {
        background: white;
    }
}

/* ==================== ACCESSIBILITY ==================== */
.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;
}

/* Focus styles for keyboard navigation */
a:focus,
button:focus,
.quick-nav-item:focus {
    outline: 3px solid var(--secondary-color);
    outline-offset: 2px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #6B3410;
        --text-color: #000000;
        --bg-color: #FFFFFF;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ==================== UTILITY CLASSES ==================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }

.color-primary { color: var(--primary-color); }
.color-secondary { color: var(--secondary-color); }
.color-success { color: var(--success-color); }
.color-warning { color: var(--warning-color); }
.color-danger { color: var(--danger-color); }