/* ============================================
   QUANTUM WELLNESS - Landing Page Styles
   Color Palette: Quantum Blue, Purple, Turquoise, Gold
   Typography: Playfair Display, Inter
   ============================================ */

/* ============================================
   CSS VARIABLES - Color Palette & Typography
   ============================================ */
:root {
    /* Quantum Color Palette */
    --color-quantum-blue: #1e3a8a;
    --color-purple: #7c3aed;
    --color-turquoise: #06b6d4;
    --color-gold: #fbbf24;
    
    /* Neutral Colors */
    --color-white: #ffffff;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-600: #4b5563;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;
    --color-black: #000000;
    
    /* Gradient */
    --gradient-quantum: linear-gradient(135deg, var(--color-quantum-blue) 0%, var(--color-purple) 50%, var(--color-turquoise) 100%);
    --gradient-overlay: linear-gradient(135deg, rgba(30, 58, 138, 0.9) 0%, rgba(124, 58, 237, 0.85) 50%, rgba(6, 182, 212, 0.8) 100%);
    
    /* Typography */
    --font-display: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --section-padding: 100px 0;
    --container-max-width: 1200px;
    
    /* Transitions */
    --transition-smooth: all 0.3s ease;
    --transition-bounce: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 20px rgba(124, 58, 237, 0.4);
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    color: var(--color-gray-800);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-gray-900);
}

h1 {
    font-size: 3.5rem;
    font-weight: 800;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-gray-600);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: var(--section-padding);
}

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

.gradient-bg {
    background: var(--gradient-quantum);
    color: var(--color-white);
}

.quantum-gradient {
    background: linear-gradient(135deg, #0f1f5a 0%, #4c1d95 50%, #0e7490 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
}

/* Section Headers */
.section-header {
    margin-bottom: 60px;
}

.section-subtitle {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-purple);
    margin-bottom: 10px;
}

.section-subtitle.light {
    color: var(--color-gold);
}

.section-title {
    margin-bottom: 20px;
}

.section-title.light {
    color: var(--color-white);
}

.section-description {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    max-width: 700px;
    margin: 0 auto;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    transition: var(--transition-smooth);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn i {
    font-size: 1.125rem;
}

.btn-primary {
    background: var(--color-gold);
    color: var(--color-gray-900);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: #f59e0b;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background: var(--color-white);
    color: var(--color-quantum-blue);
}

.btn-glow {
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(251, 191, 36, 0.4);
    }
    50% {
        box-shadow: 0 0 30px rgba(251, 191, 36, 0.6);
    }
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.nav-logo .logo-img {
    height: 50px;
    width: auto;
}

.nav-menu {
    display: flex;
}

.nav-list {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-link {
    font-weight: 500;
    color: var(--color-gray-800);
    transition: var(--transition-smooth);
}

.nav-link:hover {
    color: var(--color-purple);
}

.nav-link.cta-nav {
    padding: 10px 25px;
    background: var(--gradient-quantum);
    color: var(--color-white);
    border-radius: 50px;
}

.nav-link.cta-nav:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-gray-800);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 80px;
}

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

.hero-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.3) 0%, rgba(124, 58, 237, 0.2) 50%, rgba(6, 182, 212, 0.2) 100%);
    z-index: -1;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 50px 20px;
}

.hero-text {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 4rem;
    margin-bottom: 20px;
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--color-gray-900);
    font-weight: 600;
    margin-bottom: 20px;
    animation: fadeInUp 1.2s ease;
    text-shadow: 2px 2px 4px rgba(255, 255, 255, 0.8);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-gray-800);
    margin-bottom: 40px;
    animation: fadeInUp 1.4s ease;
    text-shadow: 1px 1px 3px rgba(255, 255, 255, 0.9);
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1.6s ease;
}

.hero-trust-badges {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 50px;
    flex-wrap: wrap;
    animation: fadeInUp 1.8s ease;
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-gray-900);
    font-size: 0.875rem;
    font-weight: 600;
    text-shadow: 1px 1px 2px rgba(255, 255, 255, 0.9);
}

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

.hero-scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s ease-in-out infinite;
}

.scroll-down {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 2px solid var(--color-white);
    border-radius: 50%;
    color: var(--color-white);
    font-size: 1.25rem;
}

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

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

/* ============================================
   PAIN POINTS SECTION
   ============================================ */
.pain-points {
    background: var(--color-gray-50);
}

.pain-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.pain-card {
    background: var(--color-white);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

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

.pain-icon {
    font-size: 3rem;
    color: var(--color-purple);
    margin-bottom: 20px;
}

.pain-title {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--color-gray-900);
}

.pain-description {
    font-size: 1rem;
    color: var(--color-gray-600);
}

/* ============================================
   SOLUTION SECTION
   ============================================ */
.solution-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.solution-content {
    padding: 20px 0;
}

.solution-text {
    font-size: 1.125rem;
    margin-bottom: 30px;
    line-height: 1.8;
}

.solution-highlights {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 40px;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 1rem;
}

.highlight-item i {
    font-size: 1.5rem;
    color: var(--color-turquoise);
    flex-shrink: 0;
}

.solution-image {
    position: relative;
}

.product-image {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    animation: float 3s ease-in-out infinite;
}

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

.image-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--color-gold);
    color: var(--color-gray-900);
    padding: 15px 25px;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    box-shadow: var(--shadow-md);
}

.image-badge i {
    font-size: 1.25rem;
}

/* ============================================
   BENEFITS SECTION
   ============================================ */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.benefit-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 40px 30px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
    transition: var(--transition-smooth);
}

.benefit-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.benefit-icon {
    font-size: 3.5rem;
    color: var(--color-gold);
    margin-bottom: 20px;
}

.benefit-title {
    font-size: 1.75rem;
    color: var(--color-white);
    margin-bottom: 15px;
}

.benefit-description {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
    margin-bottom: 20px;
}

.benefit-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(251, 191, 36, 0.2);
    color: var(--color-gold);
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
}

/* ============================================
   HOW IT WORKS SECTION
   ============================================ */
.science-visual {
    margin: 50px 0;
    text-align: center;
}

.science-image {
    max-width: 900px;
    margin: 0 auto;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.step-card {
    position: relative;
    background: var(--color-white);
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
}

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

.step-number {
    position: absolute;
    top: -20px;
    left: 30px;
    font-size: 3rem;
    font-weight: 800;
    font-family: var(--font-display);
    background: var(--gradient-quantum);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.step-content {
    margin-top: 30px;
}

.step-title {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--color-gray-900);
}

.step-description {
    font-size: 1rem;
    color: var(--color-gray-600);
    line-height: 1.8;
    margin-bottom: 20px;
}

.step-icon {
    font-size: 2.5rem;
    color: var(--color-purple);
}

.science-facts {
    margin-top: 80px;
    padding: 60px 40px;
    background: var(--color-gray-50);
    border-radius: 20px;
}

.facts-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
}

.facts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

.fact-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 10px;
}

.fact-item i {
    font-size: 2.5rem;
    color: var(--color-turquoise);
}

.fact-item strong {
    font-size: 2.5rem;
    font-weight: 800;
    font-family: var(--font-display);
    color: var(--color-purple);
}

.fact-item span {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

/* ============================================
   TESTIMONIALS SECTION
   ============================================ */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 40px 30px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition-smooth);
}

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

.testimonial-rating {
    display: flex;
    gap: 5px;
    margin-bottom: 20px;
    color: var(--color-gold);
    font-size: 1.25rem;
}

.testimonial-text {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-white);
    margin-bottom: 30px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    font-size: 3rem;
    color: var(--color-gold);
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-white);
}

.author-details {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

/* ============================================
   TRUST SECTION
   ============================================ */
.trust-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.trust-item {
    text-align: center;
    padding: 30px;
    background: var(--color-white);
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

.trust-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.trust-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--gradient-quantum);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--color-white);
}

.trust-title {
    font-size: 1.25rem;
    margin-bottom: 10px;
    color: var(--color-gray-900);
}

.trust-text {
    font-size: 0.938rem;
    color: var(--color-gray-600);
}

/* ============================================
   LEAD FORM SECTION
   ============================================ */
.form-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.form-content {
    color: var(--color-white);
}

.form-intro {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 30px;
}

.form-benefits {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-benefit-item {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 1rem;
    color: var(--color-white);
}

.form-benefit-item i {
    font-size: 1.5rem;
    color: var(--color-gold);
    flex-shrink: 0;
}

.form-container {
    background: var(--color-white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
}

.lead-form-inner {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-weight: 600;
    color: var(--color-gray-800);
    font-size: 0.938rem;
}

.form-input,
.form-textarea {
    padding: 12px 16px;
    border: 2px solid var(--color-gray-200);
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition-smooth);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-purple);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}

.form-input.error,
.form-textarea.error {
    border-color: #dc2626;
}

.form-error {
    font-size: 0.813rem;
    color: #dc2626;
    display: none;
}

.form-input.error ~ .form-error,
.form-textarea.error ~ .form-error {
    display: block;
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.checkbox-group {
    margin-top: 10px;
}

.checkbox-label {
    display: flex;
    align-items: start;
    gap: 10px;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    margin-top: 4px;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checkbox-text {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    line-height: 1.6;
}

.privacy-link {
    color: var(--color-purple);
    text-decoration: underline;
}

.privacy-link:hover {
    color: var(--color-turquoise);
}

.btn-submit {
    width: 100%;
    margin-top: 10px;
}

.form-disclaimer {
    font-size: 0.813rem;
    color: var(--color-gray-600);
    text-align: center;
    margin-top: 10px;
}

.success-message {
    text-align: center;
    padding: 60px 40px;
}

.success-icon {
    font-size: 4rem;
    color: #10b981;
    margin-bottom: 20px;
}

.success-title {
    font-size: 2rem;
    color: var(--color-gray-900);
    margin-bottom: 15px;
}

.success-text {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    margin-bottom: 30px;
}

/* ============================================
   FAQ SECTION
   ============================================ */
.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--color-white);
    margin-bottom: 20px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

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

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 30px;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.faq-question:hover {
    background: var(--color-gray-50);
}

.faq-title {
    font-size: 1.125rem;
    color: var(--color-gray-900);
    font-weight: 600;
    flex: 1;
}

.faq-icon {
    font-size: 1.25rem;
    color: var(--color-purple);
    transition: transform 0.3s ease;
}

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

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

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 30px 25px;
}

.faq-answer p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-gray-600);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--color-gray-900);
    color: var(--color-white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo-img {
    height: 50px;
    width: auto;
    margin-bottom: 15px;
}

.footer-tagline {
    font-size: 0.938rem;
    color: var(--color-gray-300);
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--color-white);
    transition: var(--transition-smooth);
}

.social-link:hover {
    background: var(--color-purple);
    transform: translateY(-3px);
}

.footer-title {
    font-size: 1.125rem;
    margin-bottom: 20px;
    color: var(--color-white);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: var(--color-gray-300);
    font-size: 0.938rem;
    transition: var(--transition-smooth);
}

.footer-links a:hover {
    color: var(--color-turquoise);
    padding-left: 5px;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-copyright {
    font-size: 0.875rem;
    color: var(--color-gray-300);
    margin-bottom: 10px;
}

.footer-copyright a {
    color: var(--color-turquoise);
}

.footer-disclaimer {
    font-size: 0.75rem;
    color: var(--color-gray-400);
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-quantum);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablets and below */
@media (max-width: 1024px) {
    h1 {
        font-size: 3rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .solution-wrapper,
    .form-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

/* Mobile devices */
@media (max-width: 768px) {
    :root {
        --section-padding: 60px 0;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    p {
        font-size: 1rem;
    }
    
    .hero {
        margin-top: 70px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }
    
    .hero-trust-badges {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--color-white);
        flex-direction: column;
        justify-content: flex-start;
        padding: 30px 20px;
        box-shadow: var(--shadow-lg);
        transition: left 0.3s ease;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 20px;
        width: 100%;
    }
    
    .nav-item {
        width: 100%;
    }
    
    .nav-link {
        display: block;
        padding: 15px;
        text-align: center;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .pain-grid,
    .benefits-grid,
    .steps-grid,
    .testimonials-grid,
    .trust-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
}

/* Small mobile devices */
@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .btn {
        padding: 14px 24px;
        font-size: 0.938rem;
    }
    
    .form-container {
        padding: 30px 20px;
    }
}