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

:root {
    /* Primary Colors */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    
    /* Solid Colors */
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #4facfe;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    
    /* Neutral Colors */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --background-light: #f9fafb;
    --background-white: #ffffff;
    --border-light: #e5e7eb;
    --border-medium: #d1d5db;
    
    /* Dark Mode Colors */
    --dark-primary: #111827;
    --dark-secondary: #1f2937;
    --dark-accent: #374151;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
}

body {
    font-family: var(--font-family);
    color: var(--text-primary);
    line-height: 1.6;
    background-color: var(--background-light);
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 3px solid transparent;
    border-image: linear-gradient(90deg, #667eea, #764ba2, #4facfe, #00f2fe) 1;
    z-index: 1000;
    transition: var(--transition-base);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: var(--font-size-xl);
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.nav-logo:hover {
    text-decoration: none;
    color: inherit;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3) !important;
    transition: var(--transition-base);
}

.logo-icon i {
    color: white !important;
    font-size: 18px;
    transition: var(--transition-base);
}

.logo-icon:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4) !important;
}

.logo-icon:hover i {
    transform: scale(1.1);
}


.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all 0.2s ease;
    position: relative;
    padding: 10px 16px;
    border-radius: 8px;
    background-color: transparent;
}

.nav-link:hover {
    color: var(--primary-color);
    background-color: rgba(102, 126, 234, 0.08);
    transform: translateY(-1px);
}

.nav-link.active {
    color: var(--primary-color);
    background-color: rgba(102, 126, 234, 0.1);
    font-weight: 600;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background-color: var(--primary-color);
    border-radius: 50%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition-fast);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 55vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: 120px 0 40px 0;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    z-index: -2;
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.hero-content {
    text-align: center;
    color: white;
    z-index: 1;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.gradient-text {
    background: linear-gradient(135deg, #ffffff 0%, #f0f9ff 50%, #e0f2fe 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.3);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-size-sm);
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Test Selection */
.test-selection {
    padding: var(--spacing-3xl) 0;
    background: var(--background-white);
}

.test-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

.test-card {
    background: var(--background-white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
    border: 2px solid transparent;
}

.test-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
}

.test-card[data-test="quick"]::before {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.test-card[data-test="standard"]::before {
    background: var(--primary-gradient);
}

.test-card[data-test="comprehensive"]::before {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.test-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

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

.card-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
    transition: var(--transition-base);
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}

.card-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: inherit;
    border-radius: inherit;
    z-index: -1;
}

.card-icon:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.card-icon.quick {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.card-icon.standard {
    background: var(--primary-gradient);
}

.card-icon.comprehensive {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

/* Ensure all icons are exactly the same font size */
.card-icon i {
    font-size: 24px;
    line-height: 1;
    display: block;
}

.card-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.card-badge {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.card-badge.popular {
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
}

.card-badge.recommended {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
}

.card-badge.challenge {
    background: rgba(245, 158, 11, 0.1);
    color: #d97706;
}

.question-count {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.time-limit {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
}

.features {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.features li i {
    color: var(--success-color);
    font-size: var(--font-size-xs);
}

.description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-sm);
}

.start-btn {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

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

.test-card[data-test="quick"] .start-btn {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.test-card[data-test="comprehensive"] .start-btn {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

/* Test Statistics Section */
.test-statistics {
    padding: var(--spacing-3xl) 0;
    background: var(--background-light);
}

.statistics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

.stat-card {
    background: var(--background-white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transition: var(--transition-base);
    border: 2px solid transparent;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(102, 126, 234, 0.1);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-gradient);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    color: white;
    flex-shrink: 0;
    box-shadow: var(--shadow-md);
}

.stat-content {
    text-align: left;
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

/* Why Choose Section */
.why-choose {
    padding: var(--spacing-3xl) 0;
    background: var(--background-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: var(--background-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    font-size: var(--font-size-2xl);
    color: white;
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Global Statistics */
.global-stats {
    padding: var(--spacing-3xl) 0;
    background: var(--background-white);
}

.stats-visualization {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.world-map-container {
    background: var(--background-light);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.world-map-wrapper {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.map-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.leaflet-map {
    width: 100%;
    height: 400px;
    border-radius: var(--radius-lg);
    border: 3px solid #2c5aa0;
    box-shadow: 
        0 4px 20px rgba(0, 0, 0, 0.2),
        inset 0 0 30px rgba(135, 206, 235, 0.3),
        0 0 50px rgba(70, 130, 180, 0.4);
    overflow: hidden;
}

.leaflet-container {
    border-radius: var(--radius-lg);
}

.ocean {
    fill: url(#oceanGradient);
}

.ocean:hover {
    opacity: 0.9;
    transition: opacity 0.3s ease;
}

.country {
    stroke: #ffffff;
    stroke-width: 0.8;
    cursor: pointer;
    transition: all 0.3s ease;
    filter: drop-shadow(1px 1px 2px rgba(0,0,0,0.3));
}

.country:hover {
    stroke: #ffdd44;
    stroke-width: 2;
    filter: 
        brightness(1.2) 
        drop-shadow(2px 2px 4px rgba(0,0,0,0.5))
        drop-shadow(0 0 8px rgba(255,221,68,0.6));
    transform: scale(1.02);
    transform-origin: center;
}

.map-legend {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.map-legend h4 {
    width: 100%;
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.map-tooltip {
    position: absolute;
    background: var(--background-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    box-shadow: var(--shadow-lg);
    pointer-events: none;
    z-index: 1000;
    font-size: var(--font-size-sm);
}

.tooltip-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.country-name {
    font-weight: 600;
}

.country-iq {
    color: var(--primary-color);
    font-weight: 500;
}

/* Leaflet Custom Markers and Popups */
.custom-marker {
    background: transparent !important;
    border: none !important;
}

.country-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 4px;
    border-radius: 8px;
    border: 2px solid white;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    transition: all 0.3s ease;
    cursor: pointer;
}

.country-marker:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

.marker-flag {
    width: 20px;
    height: 14px;
    object-fit: cover;
    border-radius: 2px;
    margin-bottom: 2px;
}

.iq-score {
    font-size: 10px;
    font-weight: bold;
    color: white;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.8);
}

.custom-popup .leaflet-popup-content-wrapper {
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.map-popup {
    min-width: 200px;
}

.popup-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid #eee;
}

.popup-flag {
    width: 30px;
    height: 20px;
    object-fit: cover;
    border-radius: 3px;
    border: 1px solid #ddd;
}

.popup-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.popup-content {
    font-size: 14px;
}

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

.iq-label {
    color: var(--text-secondary);
}

.iq-value {
    font-weight: 700;
    font-size: 16px;
}

/* Leaflet Legend Styling */
.leaflet-control.map-legend {
    background: white;
    padding: 10px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    font-size: 12px;
}

.map-legend h4 {
    margin: 0 0 8px 0;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.map-legend .legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 4px;
}

.map-legend .legend-color {
    width: 12px;
    height: 12px;
    border-radius: 2px;
    border: 1px solid rgba(0,0,0,0.1);
}

.map-legend span {
    font-size: 11px;
    color: var(--text-secondary);
}

.top-countries {
    background: var(--background-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.top-countries h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.country-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    border: 1px solid transparent;
}

.country-item:hover {
    background: var(--background-light);
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.rank {
    width: 30px;
    height: 30px;
    background: var(--primary-gradient);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-sm);
    flex-shrink: 0;
}

.country-info {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-left: var(--spacing-md);
}

.flag {
    width: 28px;
    height: 20px;
    object-fit: cover;
    border-radius: 3px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(0, 0, 0, 0.1);
    flex-shrink: 0;
    transition: var(--transition-fast);
}

.flag:hover {
    transform: scale(1.1);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.2);
}

.country {
    font-weight: 500;
    color: var(--text-primary);
}

.score {
    font-weight: 700;
    color: var(--primary-color);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

/* Responsive Design for Global Stats */
@media (max-width: 968px) {
    .stats-visualization {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .world-map-container {
        order: 2;
    }
    
    .top-countries {
        order: 1;
    }
    
    .world-map-svg {
        max-height: 300px;
    }
    
    .map-legend {
        justify-content: flex-start;
        gap: var(--spacing-sm);
    }
    
    .legend-item {
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 640px) {
    .global-stats {
        padding: var(--spacing-xl) 0;
    }
    
    .world-map-container {
        padding: var(--spacing-lg);
    }
    
    .world-map-svg {
        max-height: 250px;
    }
    
    .country-item {
        padding: var(--spacing-sm);
    }
    
    .flag {
        width: 24px;
        height: 16px;
    }
    
    .rank {
        width: 25px;
        height: 25px;
        font-size: var(--font-size-xs);
    }
    
    .score {
        font-size: var(--font-size-base);
    }
    
    .map-legend {
        flex-direction: column;
        align-items: center;
    }
    
    .map-legend h4 {
        font-size: var(--font-size-base);
    }
}

/* CTA Section */
.cta-section {
    padding: var(--spacing-3xl) 0;
    background: var(--primary-gradient);
    color: white;
    text-align: center;
}

.cta-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.cta-subtitle {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
}

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

.btn {
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: rgba(255, 255, 255, 0.2);
    color: darkmagenta;
    backdrop-filter: blur(10px);
}

.btn-primary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

/* Footer */
.footer {
    background: var(--dark-primary);
    color: white;
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.footer-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: white;
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

/* Responsive Design */
@media (max-width: 1024px) and (min-width: 769px) {
    .hero {
        min-height: 50vh;
        padding: 100px 0 30px 0;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
        margin-bottom: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: var(--transition-base);
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-xl) 0;
        border-bottom: 1px solid var(--border-light);
    }
    
    .nav-menu .nav-link {
        margin: 6px 20px;
        width: calc(100% - 40px);
        display: block;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero {
        min-height: 45vh;
        padding: 90px 0 30px 0;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
        margin-bottom: var(--spacing-md);
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .test-cards {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .stats-visualization {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .hero {
        min-height: 40vh;
        padding: 80px 0 25px 0;
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-sm);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .test-card {
        padding: var(--spacing-lg);
    }
    
    .card-icon {
        width: 64px;
        height: 64px;
        font-size: 24px;
    }
    
    .card-icon i {
        font-size: 24px;
    }
    
    .feature-card {
        padding: var(--spacing-lg);
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.6s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in-left {
    animation: slideInLeft 0.6s ease-in-out;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in-right {
    animation: slideInRight 0.6s ease-in-out;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.hidden { display: none; }
.block { display: block; }
.flex { display: flex; }
.grid { display: grid; }

.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }
.opacity-100 { opacity: 1; }