/* ============================================
   FLIRVO - Coloring Therapy Landing Page
   Design: Calming, Cozy, Stress-Relief Theme
   ============================================ */

/* === ROOT VARIABLES === */
:root {
    /* Calming Pastel Colors */
    --primary-lavender: #B8A4D9;
    --primary-mint: #A8D5BA;
    --primary-peach: #FFD4B8;
    --primary-rose: #FFB8D1;
    --primary-sky: #B8D8E8;
    
    /* Soft Gradients */
    --gradient-calm: linear-gradient(135deg, #B8A4D9 0%, #FFB8D1 100%);
    --gradient-peace: linear-gradient(135deg, #A8D5BA 0%, #B8D8E8 100%);
    --gradient-warm: linear-gradient(135deg, #FFD4B8 0%, #FFB8D1 100%);
    --gradient-hero: linear-gradient(135deg, #E8F5F7 0%, #F5E8F7 50%, #FFF5E8 100%);
    
    /* Neutrals */
    --white: #FFFFFF;
    --off-white: #FDFBF9;
    --light-cream: #FAF7F5;
    --soft-gray: #E8E5E3;
    --medium-gray: #9B9894;
    --dark-gray: #4A4845;
    --text-dark: #3A3836;
    
    /* Typography */
    --font-primary: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-secondary: 'Poppins', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 30px;
    --radius-xl: 40px;
    
    /* Shadows */
    --shadow-soft: 0 10px 40px rgba(184, 164, 217, 0.15);
    --shadow-medium: 0 15px 50px rgba(184, 164, 217, 0.2);
    --shadow-strong: 0 20px 60px rgba(184, 164, 217, 0.25);
    
    /* Transitions */
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

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

body {
    font-family: var(--font-primary);
    color: var(--text-dark);
    background-color: var(--off-white);
    line-height: 1.7;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-smooth);
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: clamp(1.2rem, 2vw, 1.5rem);
}

p {
    margin-bottom: 1rem;
    color: var(--dark-gray);
}

.large-text {
    font-size: 1.2rem;
    line-height: 1.8;
}

.gradient-text {
    background: var(--gradient-calm);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* === BUTTONS === */
.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border-radius: var(--radius-lg);
    font-family: var(--font-secondary);
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-soft);
}

.btn-primary {
    background: var(--gradient-calm);
    color: var(--white);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-strong);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-lavender);
    border: 2px solid var(--primary-lavender);
}

.btn-secondary:hover {
    background: var(--gradient-calm);
    color: var(--white);
    transform: translateY(-3px);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.1rem;
}

/* === NAVIGATION === */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(253, 251, 249, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(184, 164, 217, 0.1);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-primary);
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient-calm);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo i {
    font-size: 2rem;
    background: var(--gradient-calm);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    font-family: var(--font-secondary);
    font-weight: 500;
    color: var(--dark-gray);
    transition: var(--transition-smooth);
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.8rem;
    color: var(--primary-lavender);
    cursor: pointer;
}

/* === SECTION STYLES === */
section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

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

.section-title {
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--medium-gray);
    max-width: 600px;
    margin: 0 auto;
}

.section-tag {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: var(--gradient-calm);
    color: var(--white);
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* === HERO SECTION === */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    padding-top: 100px;
    position: relative;
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--dark-gray);
    margin-bottom: 2.5rem;
    line-height: 1.8;
    animation: fadeInUp 1s ease-out;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-bottom: 3rem;
    animation: fadeInUp 1.2s ease-out;
}

.trust-badges {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    animation: fadeInUp 1.4s ease-out;
}

.badge {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--dark-gray);
    font-weight: 600;
}

.badge i {
    font-size: 1.5rem;
    color: var(--primary-lavender);
}

.hero-image {
    position: relative;
    animation: fadeInRight 1s ease-out;
}

.image-wrapper {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-strong);
    position: relative;
}

.image-wrapper img {
    width: 100%;
    height: auto;
}

.floating {
    animation: floating 6s ease-in-out infinite;
}

.hero-decoration {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 0;
}

.circle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.4;
    animation: float 20s infinite ease-in-out;
}

.circle-1 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--primary-lavender), transparent);
    top: 10%;
    right: 10%;
    animation-delay: 0s;
}

.circle-2 {
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, var(--primary-mint), transparent);
    bottom: 20%;
    left: 5%;
    animation-delay: 5s;
}

.circle-3 {
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, var(--primary-peach), transparent);
    top: 50%;
    left: 50%;
    animation-delay: 10s;
}

/* === WHY SECTION === */
.why-section {
    background: var(--white);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: var(--spacing-lg);
}

.benefit-card {
    background: var(--light-cream);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    transition: var(--transition-smooth);
    border: 2px solid transparent;
}

.benefit-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-medium);
    border-color: var(--primary-lavender);
}

.benefit-card.featured {
    background: var(--gradient-calm);
    color: var(--white);
}

.benefit-card.featured p,
.benefit-card.featured .stat-label {
    color: rgba(255, 255, 255, 0.9);
}

.benefit-icon {
    width: 80px;
    height: 80px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 2rem;
    color: var(--primary-lavender);
    box-shadow: var(--shadow-soft);
}

.benefit-card.featured .benefit-icon {
    background: rgba(255, 255, 255, 0.95);
}

.benefit-card h3 {
    margin-bottom: 1rem;
}

.benefit-stat {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 2px solid rgba(184, 164, 217, 0.2);
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
}

.benefit-card.featured .benefit-stat {
    border-top-color: rgba(255, 255, 255, 0.3);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-calm);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.benefit-card.featured .stat-number {
    background: var(--white);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.95rem;
    color: var(--medium-gray);
}

.why-image {
    margin-top: 3rem;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-medium);
}

.why-image img {
    width: 100%;
    height: auto;
}

/* === APP SECTION === */
.app-section {
    background: var(--gradient-peace);
    position: relative;
}

.app-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.app-image {
    position: relative;
}

.phone-mockup {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-strong);
    animation: floating 6s ease-in-out infinite;
}

.floating-features {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
}

.feature-bubble {
    position: absolute;
    background: var(--white);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-medium);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    font-size: 0.9rem;
    animation: floatBubble 4s ease-in-out infinite;
}

.feature-bubble i {
    color: var(--primary-lavender);
    font-size: 1.2rem;
}

.bubble-1 {
    top: 10%;
    right: -20%;
    animation-delay: 0s;
}

.bubble-2 {
    bottom: 30%;
    right: -25%;
    animation-delay: 1.5s;
}

.bubble-3 {
    bottom: 10%;
    left: -20%;
    animation-delay: 3s;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin: 2rem 0;
}

.feature-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.6);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
}

.feature-item:hover {
    background: var(--white);
    transform: translateX(10px);
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-calm);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.3rem;
    flex-shrink: 0;
}

.feature-content h4 {
    margin-bottom: 0.5rem;
}

.feature-content p {
    color: var(--dark-gray);
    margin: 0;
}

/* === BOOKS SECTION === */
.books-section {
    background: var(--white);
}

.books-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.books-benefits {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 2rem 0;
}

.benefit-point {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--light-cream);
    border-radius: var(--radius-sm);
    transition: var(--transition-smooth);
}

.benefit-point:hover {
    background: var(--gradient-warm);
    color: var(--white);
    transform: translateX(10px);
}

.benefit-point i {
    color: var(--primary-mint);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.benefit-point:hover i {
    color: var(--white);
}

.books-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.book-image-main {
    grid-column: 1 / -1;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-medium);
}

.book-image-secondary {
    grid-column: 1 / -1;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

/* === HOW IT WORKS SECTION === */
.how-section {
    background: var(--gradient-hero);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.step-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    text-align: center;
    position: relative;
    transition: var(--transition-smooth);
    border: 2px solid transparent;
}

.step-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-medium);
    border-color: var(--primary-lavender);
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 50px;
    background: var(--gradient-calm);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    box-shadow: var(--shadow-soft);
}

.step-icon {
    width: 80px;
    height: 80px;
    background: var(--light-cream);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 2rem auto 1.5rem;
    font-size: 2rem;
    color: var(--primary-lavender);
}

.workspace-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-strong);
}

/* === GALLERY SECTION === */
.gallery-section {
    background: var(--white);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.gallery-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
    cursor: pointer;
}

.gallery-item.large {
    grid-column: span 2;
}

.gallery-item:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-strong);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(58, 56, 54, 0.9), transparent);
    padding: 2rem;
    color: var(--white);
    transform: translateY(100%);
    transition: var(--transition-smooth);
}

.gallery-item:hover .gallery-overlay {
    transform: translateY(0);
}

.gallery-overlay h4 {
    margin-bottom: 0.5rem;
}

.gallery-overlay p {
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
}

/* === TESTIMONIALS SECTION === */
.testimonials-section {
    background: var(--gradient-peace);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
    border: 2px solid transparent;
}

.testimonial-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-medium);
}

.testimonial-card.featured {
    background: var(--gradient-calm);
    color: var(--white);
    border-color: var(--primary-lavender);
}

.testimonial-card.featured p {
    color: rgba(255, 255, 255, 0.95);
}

.stars {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 1.5rem;
    color: #FFD700;
    font-size: 1.2rem;
}

.testimonial-text {
    font-style: italic;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-top: 1.5rem;
    border-top: 2px solid var(--soft-gray);
}

.testimonial-card.featured .testimonial-author {
    border-top-color: rgba(255, 255, 255, 0.3);
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: var(--gradient-calm);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
}

.testimonial-card.featured .author-avatar {
    background: var(--white);
    color: var(--primary-lavender);
}

.author-info h4 {
    margin: 0;
    font-size: 1rem;
}

.author-info p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--medium-gray);
}

.testimonial-card.featured .author-info p {
    color: rgba(255, 255, 255, 0.8);
}

/* === FAQ SECTION === */
.faq-section {
    background: var(--white);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--light-cream);
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.faq-item:hover {
    box-shadow: var(--shadow-soft);
}

.faq-question {
    width: 100%;
    padding: 1.5rem 2rem;
    background: none;
    border: none;
    text-align: left;
    font-family: var(--font-secondary);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition-smooth);
}

.faq-question:hover {
    color: var(--primary-lavender);
}

.faq-question i {
    font-size: 1rem;
    transition: var(--transition-smooth);
    color: var(--primary-lavender);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 2rem 2rem;
    line-height: 1.8;
}

/* === CTA SECTION === */
.cta-section {
    background: var(--gradient-calm);
    text-align: center;
    color: var(--white);
}

.cta-content h2 {
    color: var(--white);
    margin-bottom: 1.5rem;
}

.cta-content p {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.95);
    max-width: 700px;
    margin: 0 auto 3rem;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-section .btn-primary {
    background: var(--white);
    color: var(--primary-lavender);
}

.cta-section .btn-primary:hover {
    background: var(--off-white);
}

.cta-section .btn-secondary {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

.cta-section .btn-secondary:hover {
    background: var(--white);
    color: var(--primary-lavender);
}

/* === FOOTER === */
.footer {
    background: var(--text-dark);
    color: var(--soft-gray);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand .logo {
    color: var(--white);
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--soft-gray);
    margin-bottom: 0.5rem;
}

.copyright {
    font-size: 0.9rem;
    color: var(--medium-gray);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

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

.footer-column ul li {
    margin-bottom: 0.75rem;
}

.footer-column ul li a {
    color: var(--soft-gray);
    transition: var(--transition-smooth);
}

.footer-column ul li a:hover {
    color: var(--primary-lavender);
    padding-left: 5px;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 45px;
    height: 45px;
    background: var(--dark-gray);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.2rem;
    transition: var(--transition-smooth);
}

.social-link:hover {
    background: var(--gradient-calm);
    transform: translateY(-5px);
}

/* === ANIMATIONS === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes floatBubble {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -30px) scale(1.1);
    }
    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 968px) {
    .hero-content,
    .app-content,
    .books-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .app-content .app-image,
    .books-content .books-images {
        order: -1;
    }
    
    .gallery-item.large {
        grid-column: span 1;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .bubble-1,
    .bubble-2,
    .bubble-3 {
        display: none;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .container {
        padding: 0 1.5rem;
    }
    
    section {
        padding: var(--spacing-lg) 0;
    }
    
    .nav-links {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 80%;
        height: calc(100vh - 80px);
        background: var(--white);
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-strong);
        transition: var(--transition-smooth);
        align-items: flex-start;
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-buttons,
    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .trust-badges {
        flex-direction: column;
        gap: 1rem;
    }
    
    .benefits-grid,
    .steps-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .books-images {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-section {
        padding-top: 80px;
    }
    
    .btn-large {
        padding: 1rem 1.5rem;
        font-size: 1rem;
    }
}