/* ===== CSS Variables ===== */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #f472b6;
    --accent-pink: #ec4899;
    --accent-blue: #3b82f6;
    --accent-green: #22c55e;
    --accent-purple: #a855f7;
    --accent-orange: #f97316;
    --accent-teal: #14b8a6;
    --text: #1e293b;
    --text-light: #64748b;
    --bg: #ffffff;
    --bg-soft: #f8fafc;
    --bg-muted: #f1f5f9;
    --border: #e2e8f0;
    --radius: 16px;
    --radius-lg: 24px;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

/* ===== Beta Ribbon ===== */
.beta-ribbon {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 1100;
    overflow: hidden;
    width: 150px;
    height: 150px;
    pointer-events: none;
}

.beta-ribbon span {
    position: absolute;
    display: block;
    width: 225px;
    padding: 10px 0;
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    color: white;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    text-align: center;
    letter-spacing: 1px;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
    transform: rotate(45deg);
    top: 30px;
    right: -60px;
    pointer-events: auto;
    cursor: pointer;
    transition: background 0.2s;
}

.beta-ribbon span:hover {
    background: linear-gradient(135deg, #ea580c 0%, #c2410c 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===== Container ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text);
    font-weight: 700;
    font-size: 1.1rem;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-light);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

.nav-cta {
    background: var(--primary);
    color: white !important;
    padding: 10px 20px;
    border-radius: 10px;
    transition: background 0.2s, transform 0.2s !important;
}

.nav-cta:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* Mobile menu button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all 0.3s ease;
}

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

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

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

/* ===== Language Dropdown ===== */
.lang-dropdown {
    position: relative;
}

.lang-dropdown-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    border: 1px solid var(--border);
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s;
}

.lang-dropdown-btn:hover {
    background: var(--bg-muted);
}

.lang-flag {
    font-size: 1.2rem;
}

.lang-arrow {
    font-size: 0.65rem;
    color: var(--text-light);
    transition: transform 0.2s;
}

.lang-dropdown.open .lang-arrow {
    transform: rotate(180deg);
}

.lang-dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s;
    z-index: 1001;
    overflow: hidden;
}

.lang-dropdown.open .lang-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 12px 16px;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    text-align: left;
    transition: background 0.2s;
}

.lang-option:hover {
    background: var(--bg-muted);
}

.lang-option.active {
    background: var(--bg-soft);
    font-weight: 600;
}

.lang-option .lang-flag {
    font-size: 1.3rem;
}

.lang-option .lang-name {
    color: var(--text);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: var(--bg-muted);
    color: var(--text);
}

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

.btn-large {
    padding: 18px 36px;
    font-size: 1.1rem;
    border-radius: 14px;
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
    background: linear-gradient(135deg, #f8fafc 0%, #eef2ff 50%, #fdf4ff 100%);
}

.hero-bg-shapes {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.5;
    animation: float 20s ease-in-out infinite;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #c7d2fe, #e9d5ff);
    top: -100px;
    right: -100px;
    animation-delay: 0s;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #fbcfe8, #fecdd3);
    bottom: 10%;
    left: -50px;
    animation-delay: -5s;
}

.shape-3 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, #a5f3fc, #c4b5fd);
    top: 40%;
    right: 20%;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(20px, -20px) rotate(5deg); }
    50% { transform: translate(-10px, 20px) rotate(-5deg); }
    75% { transform: translate(15px, 10px) rotate(3deg); }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    color: var(--text);
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 32px;
}

.stat {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-light);
    font-size: 0.9rem;
}

.stat-icon {
    font-size: 1.2rem;
}

/* ===== Tablet Mockup ===== */
.hero-visual {
    display: flex;
    justify-content: center;
}

.tablet-mockup {
    background: #1e293b;
    border-radius: 32px;
    padding: 16px;
    box-shadow: var(--shadow-xl), 0 0 0 1px rgba(0,0,0,0.1);
    transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
    transition: transform 0.3s ease;
}

.tablet-mockup:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.tablet-screen {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    width: 380px;
    height: 280px;
}

.app-preview {
    padding: 20px;
    height: 100%;
    display: flex;
    flex-direction: column;
    background: linear-gradient(135deg, #fdf4ff, #eef2ff);
}

.preview-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.preview-avatar {
    font-size: 2rem;
}

.preview-name {
    font-weight: 700;
    font-size: 1.1rem;
    flex: 1;
}

.preview-streak {
    background: #fef3c7;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.preview-tasks {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.preview-task {
    display: flex;
    align-items: center;
    gap: 10px;
    background: white;
    padding: 12px 14px;
    border-radius: 12px;
    font-size: 0.9rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.preview-task.done {
    background: #f0fdf4;
}

.task-check {
    width: 24px;
    height: 24px;
    background: var(--accent-green);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: bold;
}

.task-circle {
    width: 24px;
    height: 24px;
    border: 2px solid var(--border);
    border-radius: 50%;
}

.task-points {
    margin-left: auto;
    color: var(--accent-green);
    font-weight: 600;
    font-size: 0.8rem;
}

.preview-progress {
    margin-top: auto;
}

.progress-bar {
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 6px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 4px;
}

.progress-text {
    font-size: 0.75rem;
    color: var(--text-light);
    font-weight: 500;
}

/* ===== Sections ===== */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-badge {
    display: inline-block;
    background: var(--bg-muted);
    color: var(--primary);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text);
}

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

/* ===== For Kids Section ===== */
.section-kids {
    background: var(--bg-soft);
}

.kids-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.kid-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    border-top: 4px solid var(--card-color);
}

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

.kid-card-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.kid-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text);
}

.kid-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ===== For Parents Section ===== */
.section-parents {
    background: white;
}

.parents-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.parent-feature {
    display: flex;
    gap: 20px;
    padding: 28px;
    background: var(--bg-soft);
    border-radius: var(--radius);
    transition: transform 0.2s;
}

.parent-feature:hover {
    transform: translateX(8px);
}

.parent-feature-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.parent-feature-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text);
}

.parent-feature-content p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ===== Features Grid ===== */
.section-features {
    background: linear-gradient(135deg, #eef2ff 0%, #fdf4ff 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 36px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text);
}

.feature-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ===== Testimonial ===== */
.section-testimonial {
    background: white;
    padding: 80px 0;
}

.testimonial-card {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    position: relative;
}

.testimonial-quote {
    font-size: 8rem;
    color: var(--primary);
    opacity: 0.2;
    position: absolute;
    top: -40px;
    left: 50%;
    transform: translateX(-50%);
    font-family: Georgia, serif;
    line-height: 1;
}

.testimonial-text {
    font-size: 1.4rem;
    color: var(--text);
    line-height: 1.7;
    margin-bottom: 32px;
    position: relative;
    z-index: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.author-avatar {
    font-size: 2.5rem;
}

.author-info {
    text-align: left;
}

.author-name {
    display: block;
    font-weight: 700;
    color: var(--text);
}

.author-role {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* ===== Science Section ===== */
.section-science {
    background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 50%, #f0fdfa 100%);
}

.science-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.science-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    border-left: 4px solid var(--accent-green);
}

.science-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.science-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.science-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text);
}

.science-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

.science-card cite {
    display: block;
    font-size: 0.8rem;
    color: var(--accent-teal);
    font-style: normal;
    font-weight: 500;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.science-card cite a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease;
}

.science-card cite a:hover {
    color: var(--primary);
    text-decoration: underline;
}

.science-note {
    max-width: 800px;
    margin: 48px auto 0;
    text-align: center;
    padding: 24px 32px;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.science-note p {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.7;
}

/* ===== FAQ Section ===== */
.section-faq {
    background: var(--bg-soft);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.faq-item {
    background: white;
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
    transition: transform 0.2s;
}

.faq-item:hover {
    transform: translateY(-4px);
}

.faq-item h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text);
}

.faq-item p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ===== Pricing Section ===== */
.section-pricing {
    background: white;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-soft);
    border-radius: var(--radius-lg);
    padding: 36px;
    text-align: center;
    position: relative;
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.pricing-card-featured {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.pricing-card-featured:hover {
    transform: scale(1.05) translateY(-8px);
}

.pricing-badge {
    display: inline-block;
    background: var(--border);
    color: var(--text-light);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
}

.pricing-badge-featured {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
    margin-bottom: 8px;
}

.price-currency {
    font-size: 1.5rem;
    font-weight: 600;
}

.price-amount {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1;
}

.price-period {
    font-size: 1rem;
    opacity: 0.7;
}

.pricing-duration {
    font-size: 0.9rem;
    opacity: 0.7;
    margin-bottom: 24px;
}

.pricing-features {
    list-style: none;
    text-align: left;
    margin-bottom: 28px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    font-size: 0.95rem;
}

.pricing-card-featured .pricing-features li {
    border-bottom-color: rgba(255, 255, 255, 0.1);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features li span:first-child {
    color: var(--accent-green);
    font-weight: bold;
}

.pricing-card-featured .pricing-features li span:first-child {
    color: #86efac;
}

.pricing-card .btn {
    width: 100%;
}

.pricing-card-featured .btn-primary {
    background: white;
    color: var(--primary);
}

.pricing-card-featured .btn-primary:hover {
    background: var(--bg-soft);
}

.pricing-note {
    text-align: center;
    margin-top: 32px;
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Free Beta Section */
.section-free-beta {
    background: linear-gradient(135deg, #ecfdf5 0%, #f0fdf4 100%);
}

.free-beta-card {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    border-radius: var(--radius-xl);
    padding: 48px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--primary);
}

.free-beta-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 8px 20px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 24px;
}

.free-beta-card h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
    color: var(--text);
}

.free-beta-subtitle {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 32px;
    line-height: 1.6;
}

.free-beta-features {
    list-style: none;
    padding: 0;
    margin: 0 0 32px 0;
    text-align: left;
    display: inline-block;
}

.free-beta-features li {
    padding: 8px 0;
    color: var(--text);
    font-size: 1.05rem;
    display: flex;
    align-items: center;
    gap: 12px;
}

.free-beta-features li span:first-child {
    color: var(--primary);
    font-weight: 700;
}

/* ===== Beta Signup Section ===== */
.section-beta {
    background: linear-gradient(135deg, #fdf4ff 0%, #eef2ff 100%);
}

.beta-form-container {
    max-width: 500px;
    margin: 0 auto;
}

.beta-form {
    background: white;
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text);
    font-size: 0.95rem;
}

.form-group input[type="email"],
.form-group input[type="text"],
.form-group select {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: white;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.form-checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    cursor: pointer;
}

.form-checkbox label {
    font-weight: 400;
    font-size: 0.9rem;
    color: var(--text-light);
}

.form-checkbox label a {
    color: var(--primary);
    text-decoration: none;
}

.form-checkbox label a:hover {
    text-decoration: underline;
}

.btn-full {
    width: 100%;
}

.beta-success {
    background: white;
    border-radius: var(--radius-lg);
    padding: 60px 40px;
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.success-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.beta-success h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text);
}

.beta-success p {
    color: var(--text-light);
    font-size: 1rem;
}

/* ===== CTA Section ===== */
.section-cta {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 32px;
}

.cta-buttons {
    margin-bottom: 24px;
}

.section-cta .btn-primary {
    background: white;
    color: var(--primary);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

.section-cta .btn-primary:hover {
    background: var(--bg-soft);
    transform: translateY(-2px);
}

.cta-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* ===== Footer ===== */
.footer {
    background: var(--text);
    color: white;
    padding: 60px 0 40px;
}

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

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 12px;
}

.footer .logo-text {
    font-weight: 700;
    font-size: 1.1rem;
}

.footer-tagline {
    color: rgba(255,255,255,0.7);
    margin-bottom: 24px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 32px;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: color 0.2s;
}

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

.footer-copyright {
    color: rgba(255,255,255,0.5);
    font-size: 0.9rem;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2.8rem;
    }

    .hero-subtitle {
        margin: 0 auto 32px;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-visual {
        order: -1;
    }

    .tablet-mockup {
        transform: none;
    }

    .kids-grid,
    .features-grid,
    .faq-grid,
    .science-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .parents-features {
        grid-template-columns: 1fr;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }

    .pricing-card-featured {
        transform: none;
        order: -1;
    }

    .pricing-card-featured:hover {
        transform: translateY(-8px);
    }
}

@media (max-width: 768px) {
    /* Show hamburger menu */
    .mobile-menu-btn {
        display: flex;
    }

    /* Mobile navigation dropdown */
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px 24px;
        gap: 0;
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--border);
    }

    .nav-links.mobile-open {
        display: flex;
    }

    .nav-links a {
        padding: 12px 0;
        border-bottom: 1px solid var(--border);
        width: 100%;
    }

    .nav-links a:last-of-type {
        border-bottom: none;
    }

    .nav-links .nav-cta {
        margin-top: 12px;
        text-align: center;
    }

    .nav-links .lang-dropdown {
        margin-top: 12px;
        padding-top: 12px;
        border-top: 1px solid var(--border);
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }

    .tablet-screen {
        width: 320px;
        height: 240px;
    }

    .section {
        padding: 60px 0;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .kids-grid,
    .features-grid,
    .faq-grid,
    .science-grid {
        grid-template-columns: 1fr;
    }

    .kid-card,
    .feature-card {
        padding: 24px;
    }

    .testimonial-text {
        font-size: 1.15rem;
    }

    .cta-content h2 {
        font-size: 1.8rem;
    }

    .footer-links {
        flex-direction: column;
        gap: 16px;
    }

    .beta-form {
        padding: 28px;
    }

    .beta-ribbon span {
        font-size: 0.7rem;
        padding: 8px 0;
        width: 180px;
        top: 22px;
        right: -48px;
    }
}

@media (max-width: 480px) {
    /* Shorten logo text on small screens */
    .logo-text {
        font-size: 0.9rem;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }

    .tablet-mockup {
        padding: 10px;
        border-radius: 20px;
    }

    .tablet-screen {
        width: 280px;
        height: 200px;
        border-radius: 14px;
    }

    .app-preview {
        padding: 14px;
    }

    .preview-header {
        margin-bottom: 10px;
    }

    .preview-avatar {
        font-size: 1.5rem;
    }

    .preview-name {
        font-size: 0.95rem;
    }

    .preview-task {
        padding: 8px 10px;
        font-size: 0.8rem;
    }

    .task-check,
    .task-circle {
        width: 20px;
        height: 20px;
    }

    /* Beta form on small screens */
    .beta-form {
        padding: 20px;
    }

    .beta-form h3 {
        font-size: 1.3rem;
    }

    .form-row {
        flex-direction: column;
    }
}