/* ========================================
   Сочиняша — Mobile-First Landing Styles
   Оптимизировано для мобильных устройств
   ======================================== */

/* CSS Variables */
:root {
    /* Colors */
    --color-primary: #6C63FF;
    --color-primary-dark: #5A52E0;
    --color-primary-light: #8B85FF;
    --color-accent: #00D4AA;
    --color-accent-dark: #00B894;
    --color-warm: #FFB347;
    --color-warm-dark: #F09819;
    --color-bg: #F8F9FA;
    --color-bg-white: #FFFFFF;
    --color-text: #2D3436;
    --color-text-light: #636E72;
    --color-text-muted: #B2BEC3;
    --color-border: #E0E0E0;
    --color-negative: #FF6B6B;
    --color-positive: #00D4AA;
    
    /* Typography - увеличенные размеры для мобильных */
    --font-heading: 'Nunito', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing - увеличенные отступы для touch */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 2.5rem;
    --spacing-xxl: 3.5rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 50%;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
    --shadow-primary: 0 4px 20px rgba(108, 99, 255, 0.3);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    
    /* Container */
    --container-max: 1200px;
    --container-padding: 1rem;
    
    /* Touch targets */
    --touch-min: 44px;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul {
    list-style: none;
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Typography - Mobile First */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
    color: var(--color-text);
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-sm);
    font-size: 1.75rem;
    letter-spacing: -0.02em;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-light);
    font-size: 1rem;
    max-width: 100%;
    margin: 0 auto var(--spacing-lg);
    padding: 0 var(--spacing-sm);
}

/* Buttons - Optimized for Touch */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    min-height: var(--touch-min);
    padding: 0.875rem 1.5rem;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    box-shadow: var(--shadow-primary);
}

.btn-primary:active {
    transform: scale(0.98);
    box-shadow: 0 2px 10px rgba(108, 99, 255, 0.4);
}

.btn-large {
    min-height: 52px;
    padding: 1rem 2rem;
    font-size: 1.125rem;
    width: 100%;
    max-width: 320px;
}

.btn-icon {
    font-size: 1.25em;
}

/* Header - Mobile Optimized */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
    padding: 0 var(--spacing-xs);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-text);
}

.logo:hover {
    color: var(--color-primary);
}

.logo-icon {
    font-size: 1.5em;
}

/* Hide desktop nav on mobile */
.nav-links,
.btn-nav {
    display: none;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: var(--touch-min);
    height: var(--touch-min);
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    -webkit-tap-highlight-color: transparent;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: all var(--transition-fast);
    border-radius: 2px;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    bottom: 0;
    background: white;
    padding: var(--spacing-lg);
    z-index: 999;
    overflow-y: auto;
}

.mobile-menu.active {
    display: block;
}

.mobile-menu-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.mobile-menu-links a {
    display: flex;
    align-items: center;
    min-height: var(--touch-min);
    color: var(--color-text);
    font-weight: 600;
    font-size: 1.125rem;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
    -webkit-tap-highlight-color: transparent;
}

.mobile-menu-links .btn {
    margin-top: var(--spacing-md);
    width: 100%;
}

/* Hero Section - Mobile First */
.hero {
    position: relative;
    min-height: auto;
    display: flex;
    flex-direction: column;
    padding-top: 80px;
    padding-bottom: var(--spacing-xl);
    background: linear-gradient(135deg, #FFF8F0 0%, #F0EEFF 50%, #E8F8FF 100%);
    overflow: hidden;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--spacing-lg);
}

.hero-text {
    order: 1;
}

.hero-title {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.3;
    filter: drop-shadow(0 2px 12px rgba(108, 99, 255, 0.15));
}

.hero-subtitle {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.hero-note {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* Hero Visual - Mobile */
.hero-visual {
    order: 0;
    margin-bottom: var(--spacing-md);
}

.hero-image-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.hero-drawing,
.hero-ar {
    position: relative;
    width: 150px;
    height: 190px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.hero-drawing {
    background: linear-gradient(135deg, #FFF5E6 0%, #FFE4C4 100%);
    border: 2px solid var(--color-warm);
    animation: float 6s ease-in-out infinite;
}

.hero-ar {
    background: linear-gradient(135deg, #E8E4FF 0%, #D4CFFF 100%);
    border: 2px solid var(--color-primary);
    animation: float 6s ease-in-out 1s infinite;
}

.hero-drawing-img,
.hero-ar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-arrow {
    animation: pulse 2s infinite;
}

.hero-arrow svg {
    width: 24px;
    height: 24px;
}

/* Hero Background Shapes */
.hero-bg-shapes {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: -1;
}

.shape {
    position: absolute;
    border-radius: var(--radius-full);
    opacity: 0.4;
}

.shape-1 {
    width: 150px;
    height: 150px;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, transparent 70%);
    top: 5%;
    right: -50px;
    animation: float 8s ease-in-out infinite;
}

.shape-2 {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--color-accent) 0%, transparent 70%);
    bottom: 10%;
    left: -30px;
    animation: float 6s ease-in-out infinite reverse;
}

.shape-3 {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-warm) 0%, transparent 70%);
    top: 50%;
    left: 20%;
    animation: float 10s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(5deg); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

/* Benefits Section - Mobile */
.benefits {
    padding: var(--spacing-xxl) 0;
    background: white;
}

.benefits-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.benefit-card {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

/* Цветовая дифференциация карточек */
.benefit-card:nth-child(1) {
    background: #FFF5E6;
    border-color: #FFD9A0;
}

.benefit-card:nth-child(2) {
    background: #F0FFF4;
    border-color: #A8EFC8;
}

.benefit-card:nth-child(3) {
    background: #F0F0FF;
    border-color: #C8C4FF;
}

.benefit-card:nth-child(4) {
    background: #FFF0F5;
    border-color: #FFB8D0;
}

.benefit-card:active {
    transform: scale(0.98);
}

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

.benefit-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.benefit-text {
    color: var(--color-text-light);
    font-size: 1rem;
    line-height: 1.5;
}

.expert-quote {
    max-width: 100%;
    margin: 0 auto;
    text-align: center;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #F0F0FF 0%, #E8E4FF 100%);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-primary);
}

.expert-quote blockquote {
    font-style: italic;
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    line-height: 1.5;
}

.expert-quote cite {
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* How It Works - Mobile */
.how-it-works {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(180deg, var(--color-bg) 0%, white 100%);
}

.steps {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
}

.step {
    width: 100%;
    max-width: 320px;
    text-align: center;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #F8F5FF 0%, #EEEAFF 100%);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    position: relative;
    border: 1px solid rgba(108, 99, 255, 0.12);
}

.step-number {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    width: 36px;
    height: 36px;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1rem;
    box-shadow: 0 4px 12px rgba(108, 99, 255, 0.4);
    border: 3px solid white;
}

.step-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-sm);
    background: var(--color-bg);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-icon img {
    width: 40px;
    height: 40px;
}

.step-title {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.step-text {
    color: var(--color-text-light);
    font-size: 1rem;
    line-height: 1.5;
}

.step-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    width: 2px;
    height: 32px;
    background: linear-gradient(180deg, var(--color-primary) 0%, transparent 100%);
    opacity: 0.3;
    margin: 0 auto;
}

.step-arrow svg {
    display: none;
}

.how-note {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--color-bg);
    border-radius: var(--radius-md);
}

.how-note p {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* Age Groups - Mobile */
.age-groups {
    padding: var(--spacing-xxl) 0;
    background: white;
}

.age-cards {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 400px;
    margin: 0 auto;
}

.age-card {
    padding: var(--spacing-lg);
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.age-card:active {
    transform: scale(0.98);
}

/* Карточка 4-6 лет */
.age-card:nth-child(1) {
    background: linear-gradient(135deg, #FFF8F0 0%, #FFE8CC 100%);
    border-color: #FFB347;
}

.age-card:nth-child(1) .age-badge {
    background: #FFB347;
    color: #5A3000;
}

/* Карточка 7-9 лет (featured) */
.age-card-featured {
    background: linear-gradient(135deg, #F8F5FF 0%, #EEEAFF 100%);
    border-color: var(--color-primary);
}

.age-card-featured .age-badge {
    background: var(--color-primary);
    color: white;
}

/* Карточка 10-12 лет */
.age-card:nth-child(3) {
    background: linear-gradient(135deg, #F0FFFC 0%, #CCFFF5 100%);
    border-color: #00D4AA;
}

.age-card:nth-child(3) .age-badge {
    background: #00D4AA;
    color: #003D30;
}

.age-badge {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-sm);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

.age-title {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.age-text {
    color: var(--color-text-light);
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1.5;
}

.age-features {
    text-align: left;
}

.age-features li {
    padding: var(--spacing-xs) 0;
    color: var(--color-text);
    font-size: 1rem;
}

/* Screen Safety - Mobile */
.screen-safety {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, #FFF9E6 0%, #FFF5F5 100%);
}

.comparison {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.comparison-item {
    width: 100%;
    max-width: 400px;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    flex: 1;
}

.comparison-negative {
    background: #FFF5F5;
    border: 2px solid #FFE0E0;
}

.comparison-positive {
    background: #F0FFF4;
    border: 2px solid var(--color-accent);
}

.comparison-vs {
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--color-text-muted);
    padding: var(--spacing-sm) 0;
    flex-shrink: 0;
}

.comparison-title {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

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

.comparison-list li {
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    line-height: 1.4;
}

.negative {
    background: rgba(255, 107, 107, 0.1);
}

.positive {
    background: rgba(0, 212, 170, 0.1);
}

.safety-highlight {
    max-width: 100%;
    margin: 0 auto;
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.safety-highlight p {
    font-size: 1rem;
    color: var(--color-text);
    line-height: 1.5;
}

/* Emotional Result - Mobile */
.emotional-result {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, #E8E4FF 0%, #F0F0FF 100%);
}

.scenarios {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 400px;
    margin: 0 auto;
}

.scenario {
    text-align: center;
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.scenario::before {
    content: '"';
    position: absolute;
    top: 4px;
    left: 12px;
    font-size: 6rem;
    color: var(--color-primary);
    opacity: 0.06;
    font-family: Georgia, 'Times New Roman', serif;
    line-height: 1;
    pointer-events: none;
}

.scenario-emoji {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.scenario-quote {
    font-style: italic;
    font-size: 1.125rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    position: relative;
    line-height: 1.5;
    padding: 0 var(--spacing-sm);
}

.scenario-age {
    color: var(--color-text-light);
    font-size: 1rem;
}

/* CTA Section - Mobile */
.cta {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, #6C63FF 0%, #5A52E0 50%, #4A42D0 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -60px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.cta::after {
    content: '';
    position: absolute;
    bottom: -80px;
    left: -40px;
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, rgba(255,179,71,0.12) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.cta .section-title,
.cta .section-subtitle {
    color: white;
}

.cta-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

.cta-benefits {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: center;
}

.cta-benefit {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-size: 1rem;
}

.cta-benefit-icon {
    font-size: 1.125rem;
}

.cta-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    width: 100%;
}

.cta .btn-primary {
    background: white;
    color: var(--color-primary);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 320px;
}

.cta .btn-primary:active {
    transform: scale(0.98);
}

/* FAQ Section - Mobile */
.faq {
    padding: var(--spacing-xxl) 0;
    background: white;
}

.faq-list {
    max-width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.faq-item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: var(--touch-min);
    padding: var(--spacing-md);
    background: var(--color-bg);
    border: none;
    cursor: pointer;
    text-align: left;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-text);
    transition: all var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.faq-question:active {
    background: #EEF0FF;
}

.faq-icon {
    font-size: 1.25rem;
    color: var(--color-primary);
    transition: transform var(--transition-normal);
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: var(--spacing-md);
    color: var(--color-text-light);
    line-height: 1.6;
    font-size: 1rem;
}

/* Footer - Mobile */
.footer {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    background: #1E1B4B;
    color: white;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-brand {
    text-align: center;
}

.footer-brand .logo {
    color: white;
    justify-content: center;
}

.footer-tagline {
    margin-top: var(--spacing-xs);
    color: var(--color-text-muted);
    font-size: 1rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    text-align: center;
}

.footer-column h4 {
    color: white;
    font-size: 0.95rem;
    margin-bottom: var(--spacing-sm);
}

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

.footer-column a {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    transition: color var(--transition-fast);
    min-height: var(--touch-min);
    display: flex;
    align-items: center;
    justify-content: center;
    -webkit-tap-highlight-color: transparent;
}

.footer-column a:active {
    color: white;
}

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

.footer-provider {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

.footer-copyright {
    color: var(--color-text-muted);
    font-size: 0.75rem;
    line-height: 1.5;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Tablet Breakpoint (min-width: 768px)
   ======================================== */
@media (min-width: 768px) {
    :root {
        --container-padding: 1.5rem;
    }
    
    h1 { font-size: 2.25rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1.125rem;
        max-width: 600px;
    }
    
    /* Navigation */
    .nav {
        height: 70px;
    }
    
    .nav-links {
        display: flex;
        align-items: center;
        gap: var(--spacing-lg);
    }
    
    .nav-links a {
        color: var(--color-text);
        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: var(--color-primary);
        transition: width var(--transition-normal);
    }
    
    .nav-links a:hover::after {
        width: 100%;
    }
    
    .btn-nav {
        display: inline-flex;
        min-height: 40px;
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }
    
    .mobile-menu-btn {
        display: none;
    }
    
    .mobile-menu {
        display: none !important;
    }
    
    /* Hero */
    .hero {
        padding-top: 100px;
        padding-bottom: var(--spacing-xxl);
    }
    
    .hero-content {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xl);
        text-align: left;
    }
    
    .hero-text {
        order: 1;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-cta {
        align-items: flex-start;
    }
    
    .btn-large {
        width: auto;
        max-width: none;
    }
    
    .hero-visual {
        order: 2;
    }
    
    .hero-drawing,
    .hero-ar {
        width: 200px;
        height: 260px;
    }
    
    /* Benefits */
    .benefits-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
        max-width: 700px;
        margin: 0 auto var(--spacing-xl);
    }
    
    .benefit-icon {
        font-size: 3rem;
    }
    
    /* Steps */
    .steps {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .step {
        min-width: 250px;
        max-width: 300px;
    }
    
    .step-arrow {
        transform: none;
        padding-top: 0;
        width: 40px;
        height: 2px;
        background: linear-gradient(90deg, var(--color-primary) 0%, transparent 100%);
        opacity: 0.3;
        margin: 0;
        align-self: center;
        margin-top: -60px;
    }

    .step-arrow svg {
        display: none;
    }
    
    .how-note {
        flex-direction: row;
        justify-content: center;
        gap: var(--spacing-xl);
    }
    
    /* Age Groups */
    .age-cards {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        max-width: none;
    }
    
    .age-card-featured {
        transform: scale(1.02);
    }
    
    /* Comparison */
    .comparison {
        flex-direction: row;
        flex-wrap: nowrap;
        align-items: stretch;
    }

    .comparison-vs {
        padding: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        width: 56px;
        height: 56px;
        background: white;
        border-radius: 50%;
        box-shadow: var(--shadow-md);
        align-self: center;
        flex-shrink: 0;
    }

    /* Scenarios */
    .scenarios {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        max-width: none;
    }
    
    /* CTA */
    .cta-actions {
        flex-direction: row;
        justify-content: center;
        gap: var(--spacing-xl);
    }
    
    .cta .btn-primary {
        width: auto;
    }
    
    /* Footer */
    .footer-content {
        display: grid;
        grid-template-columns: 1fr 2fr;
        text-align: left;
        align-items: start;
    }
    
    .footer-brand {
        text-align: left;
    }
    
    .footer-brand .logo {
        justify-content: flex-start;
    }
    
    .footer-links {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        text-align: left;
    }
    
    .footer-column a {
        justify-content: flex-start;
    }
}

/* ========================================
   Desktop Breakpoint (min-width: 1024px)
   ======================================== */
@media (min-width: 1024px) {
    h1 { font-size: 2.75rem; }
    h2 { font-size: 2.25rem; }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-drawing,
    .hero-ar {
        width: 240px;
        height: 320px;
    }
    
    .benefits-grid {
        grid-template-columns: repeat(4, 1fr);
        max-width: none;
    }
    
    .age-card:hover,
    .benefit-card:hover,
    .scenario:hover {
        transform: translateY(-5px);
        box-shadow: var(--shadow-md);
    }
    
    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 30px rgba(108, 99, 255, 0.4);
    }
}

/* ========================================
   Large Desktop (min-width: 1200px)
   ======================================== */
@media (min-width: 1200px) {
    .hero-title {
        font-size: 3.25rem;
    }
}

/* Print Styles */
@media print {
    .header,
    .mobile-menu,
    .cta,
    .footer {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: var(--spacing-lg) 0;
    }
    
    body {
        background: white;
    }
}