/* ===================================
   PHOTO SAAS - MAIN STYLES
   =================================== */

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

:root {
    /* Colors */
    --primary: #667eea;
    --secondary: #764ba2;
    --accent: #ff6b6b;
    --success: #48bb78;
    --warning: #ed8936;
    --error: #e53e3e;
    --info: #4299e1;
    
    /* Grays */
    --gray-50: #f7fafc;
    --gray-100: #edf2f7;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e0;
    --gray-400: #a0aec0;
    --gray-500: #718096;
    --gray-600: #4a5568;
    --gray-700: #2d3748;
    --gray-800: #1a202c;
    --gray-900: #171923;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.3);
    
    /* Transitions */
    --transition: all 0.3s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--gray-700);
    background: #ffffff;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-800);
}

a {
    text-decoration: none;
    color: inherit;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    justify-content: center;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-200);
}

.btn-outline {
    background: transparent;
    border-color: var(--gray-300);
    color: var(--gray-700);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(102, 126, 234, 0.05);
}

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.05rem;
}

.btn-block {
    width: 100%;
}

/* Header / Navbar */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 2rem;
}

.logo {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--gray-800);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: 3rem;
}

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

.nav-link {
    color: var(--gray-700);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-buttons {
    display: flex;
    gap: 1rem;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--gray-700);
    cursor: pointer;
}

/* Hero Section */
.hero {
    position: relative;
    padding: 10rem 0 6rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #e8ecf3 100%);
    overflow: hidden;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: white;
    padding: 0.5rem 1.25rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.15;
    margin-bottom: 1.5rem;
}

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

.hero-description {
    font-size: 1.15rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    flex-wrap: wrap;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat strong {
    font-size: 2rem;
    color: var(--gray-800);
}

.stat span {
    font-size: 0.9rem;
    color: var(--gray-600);
}

.hero-image-wrapper {
    position: relative;
}

.hero-image-wrapper img {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.floating-card {
    position: absolute;
    background: white;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: float 3s ease-in-out infinite;
}

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

.floating-card.card-1 {
    top: 10%;
    left: -10%;
    animation-delay: 0s;
}

.floating-card.card-2 {
    top: 50%;
    right: -10%;
    animation-delay: 1s;
}

.floating-card.card-3 {
    bottom: 10%;
    left: -5%;
    animation-delay: 2s;
}

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

.floating-card div {
    display: flex;
    flex-direction: column;
}

.floating-card strong {
    font-size: 1.5rem;
    color: var(--gray-800);
}

.floating-card span {
    font-size: 0.85rem;
    color: var(--gray-600);
}

.hero-gradient {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to bottom, transparent, white);
}

/* Section */
.section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-badge {
    display: inline-block;
    background: var(--gradient-primary);
    color: white;
    padding: 0.5rem 1.25rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.15rem;
    color: var(--gray-600);
    max-width: 700px;
    margin: 0 auto;
}

/* Benefits Grid */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.benefit-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.benefit-icon {
    width: 70px;
    height: 70px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    margin-bottom: 1.5rem;
}

.benefit-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.benefit-card > p {
    color: var(--gray-600);
    margin-bottom: 1.5rem;
}

.benefit-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.benefit-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--gray-700);
    font-size: 0.95rem;
}

.benefit-list i {
    color: var(--success);
    font-size: 1.1rem;
}

/* Video Demo */
.video-demo {
    background: var(--gray-50);
}

.video-demo-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.video-wrapper {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.video-wrapper img {
    width: 100%;
    display: block;
}

.video-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    color: white;
    cursor: pointer;
    transition: var(--transition);
}

.video-placeholder:hover {
    background: rgba(0, 0, 0, 0.7);
}

.video-placeholder i {
    font-size: 4rem;
}

.video-placeholder span {
    font-size: 1.2rem;
    font-weight: 600;
}

.video-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.video-info > p {
    color: var(--gray-600);
    font-size: 1.05rem;
    margin-bottom: 2rem;
}

.feature-checks {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.feature-checks li {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.05rem;
}

.feature-checks i {
    color: var(--success);
    font-size: 1.25rem;
}

/* How It Works */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.step-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow);
    position: relative;
    text-align: center;
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    box-shadow: var(--shadow-md);
}

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

.step-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.step-card p {
    color: var(--gray-600);
}

/* Success Cases */
.success-cases {
    background: var(--gray-50);
}

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

.case-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.case-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.case-content {
    padding: 2rem;
}

.case-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.case-specialty {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.95rem;
    display: block;
    margin-bottom: 1.5rem;
}

.case-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px dashed var(--gray-200);
}

.case-stat strong {
    display: block;
    font-size: 1.75rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.case-stat span {
    font-size: 0.85rem;
    color: var(--gray-600);
}

.case-content > p {
    color: var(--gray-600);
    font-style: italic;
    line-height: 1.7;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.feature-item {
    text-align: center;
    padding: 2rem 1rem;
}

.feature-item i {
    font-size: 3rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.feature-item h4 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
}

.feature-item p {
    color: var(--gray-600);
    font-size: 0.95rem;
}

/* Technology Stack */
.technology {
    background: var(--gray-50);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 2rem;
}

.tech-item {
    background: white;
    padding: 2rem 1rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.tech-item i {
    font-size: 3rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.tech-item h4 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.tech-item p {
    font-size: 0.85rem;
    color: var(--gray-600);
}

/* Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.pricing-card {
    background: white;
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: var(--shadow);
    position: relative;
    transition: var(--transition);
}

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

.pricing-card.featured {
    border: 3px solid var(--primary);
    transform: scale(1.05);
}

.pricing-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.85rem;
}

.pricing-header {
    text-align: center;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--gray-200);
    margin-bottom: 2rem;
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.price {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0.25rem;
    margin: 1.5rem 0;
}

.currency {
    font-size: 1.5rem;
    color: var(--gray-700);
}

.amount {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.period {
    font-size: 1.2rem;
    color: var(--gray-600);
    align-self: flex-end;
}

.pricing-header > p {
    color: var(--gray-600);
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0;
    color: var(--gray-700);
}

.pricing-features i {
    color: var(--success);
}

.pricing-features li.disabled {
    color: var(--gray-400);
}

.pricing-features li.disabled i {
    color: var(--gray-400);
}

/* Testimonials */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.testimonial-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow);
}

.testimonial-rating {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 1rem;
}

.testimonial-rating i {
    color: #fbbf24;
}

.testimonial-text {
    color: var(--gray-700);
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-author img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}

.testimonial-author strong {
    display: block;
    color: var(--gray-800);
}

.testimonial-author span {
    font-size: 0.9rem;
    color: var(--gray-600);
}

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

.faq-item {
    background: white;
    border-radius: 12px;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-question {
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
}

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

.faq-question h4 {
    font-size: 1.1rem;
}

.faq-question i {
    color: var(--primary);
    transition: transform 0.3s;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

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

.faq-answer p {
    padding: 0 2rem 1.5rem;
    color: var(--gray-600);
    line-height: 1.7;
}

/* CTA Section */
.cta {
    background: var(--gradient-primary);
    color: white;
}

.cta-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 3rem;
    color: white;
    margin-bottom: 1rem;
}

.cta-content > p {
    font-size: 1.25rem;
    opacity: 0.95;
    margin-bottom: 2rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.cta-note {
    font-size: 0.95rem;
    opacity: 0.9;
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    font-size: 1.75rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

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

.footer-column p {
    color: var(--gray-400);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

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

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

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.footer-column h4 {
    color: 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 a {
    color: var(--gray-400);
    transition: var(--transition);
}

.footer-column ul a:hover {
    color: white;
    padding-left: 5px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--gray-400);
}

.footer-tech {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-tech i {
    font-size: 1.5rem;
    color: var(--gray-500);
}

/* Chat Widget */
.chat-widget {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    z-index: 1000;
}

.chat-toggle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-primary);
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    position: relative;
    transition: var(--transition);
}

.chat-toggle:hover {
    transform: scale(1.1);
}

.chat-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 24px;
    height: 24px;
    background: var(--error);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    border: 3px solid white;
}

.chat-window {
    position: absolute;
    bottom: 80px;
    left: 0;
    width: 350px;
    height: 500px;
    background: white;
    border-radius: 16px;
    box-shadow: var(--shadow-xl);
    display: none;
    flex-direction: column;
}

.chat-window.active {
    display: flex;
}

.chat-header {
    padding: 1.5rem;
    background: var(--gradient-primary);
    color: white;
    border-radius: 16px 16px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-header-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.chat-header img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid white;
}

.chat-status {
    font-size: 0.85rem;
    opacity: 0.9;
}

.chat-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
}

.chat-body {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
}

.chat-message {
    margin-bottom: 1rem;
}

.chat-message.received {
    background: var(--gray-100);
    padding: 1rem;
    border-radius: 12px 12px 12px 0;
}

.chat-time {
    font-size: 0.75rem;
    color: var(--gray-500);
    display: block;
    margin-top: 0.5rem;
}

.chat-footer {
    padding: 1rem;
    border-top: 1px solid var(--gray-200);
    display: flex;
    gap: 0.75rem;
}

.chat-footer input {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid var(--gray-200);
    border-radius: 8px;
    font-family: inherit;
}

.chat-footer button {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border: none;
    color: white;
    border-radius: 8px;
    cursor: pointer;
}

/* Scroll to Top */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border: none;
    color: white;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: var(--transition);
}

.scroll-top.active {
    display: flex;
}

.scroll-top:hover {
    transform: translateY(-5px);
}

/* Responsive */
@media (max-width: 1200px) {
    .hero-title {
        font-size: 3rem;
    }
}

@media (max-width: 992px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: white;
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-xl);
        transition: right 0.3s;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
    }
    
    .benefits-grid,
    .cases-grid,
    .pricing-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tech-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 8rem 0 4rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .steps-grid,
    .features-grid,
    .tech-grid {
        grid-template-columns: 1fr;
    }
    
    .video-demo-content {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .chat-widget {
        left: 1rem;
        bottom: 1rem;
    }
    
    .chat-window {
        width: calc(100vw - 2rem);
        max-width: 350px;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
}