/* Base Styles and Variables */
:root {
    --primary: #00ACC1;
    --primary-light: #26C6DA;
    --primary-dark: #0097A7;
    --accent: #E0F7FA;
    --text-dark: #263238;
    --text-light: #546E7A;
    --text-lighter: #78909C;
    --white: #FFFFFF;
    --gray-light: #ECEFF1;
    --gray: #CFD8DC;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 10px 15px rgba(0, 0, 0, 0.15);
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    --border-radius: 12px;
    --border-radius-sm: 6px;
    --font-primary: 'Inter', sans-serif;
    --font-heading: 'Rubik', sans-serif;
    --transition: all 0.3s ease;
}

* {
    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);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    background-color: var(--white);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

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

ul {
    list-style: none;
}

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

section {
    padding: 80px 0;
    position: relative;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto 50px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    cursor: pointer;
    text-align: center;
    font-family: var(--font-primary);
    border: none;
}

.primary-btn {
    background: var(--gradient);
    color: var(--white);
    box-shadow: 0 4px 10px rgba(0, 172, 193, 0.3);
}

.primary-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(0, 172, 193, 0.4);
    color: var(--white);
}

.secondary-btn {
    background: rgba(38, 198, 218, 0.1);
    color: var(--primary);
    border: 1px solid var(--primary-light);
}

.secondary-btn:hover {
    background: rgba(38, 198, 218, 0.2);
    color: var(--primary-dark);
}

.outline-btn {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.outline-btn:hover {
    background: rgba(38, 198, 218, 0.1);
}

.btn.large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    height: 70px;
    display: flex;
    align-items: center;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    font-family: var(--font-heading);
}

.logo-svg {
    margin-right: 10px;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.main-nav ul {
    display: flex;
}

.main-nav li {
    margin-left: 30px;
}

.main-nav a {
    font-weight: 500;
    color: var(--text-dark);
    padding: 5px 0;
    position: relative;
    transition: var(--transition);
}

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

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition);
}

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

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 22px;
    position: relative;
    z-index: 1010;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--primary);
    margin: 5px 0;
    transition: var(--transition);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--white);
    z-index: 1000;
    padding-top: 80px;
    transform: translateY(-100%);
    transition: transform 0.4s ease;
}

.mobile-menu.active {
    transform: translateY(0);
}

.mobile-menu ul {
    text-align: center;
}

.mobile-menu li {
    margin-bottom: 20px;
}

.mobile-menu a {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-dark);
    padding: 10px;
    display: block;
}

/* Hero Section */
.hero {
    padding: 150px 0 100px;
    position: relative;
    overflow: hidden;
    background-color: var(--white);
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 500px;
}

.hero-content h2 {
    font-family: var(--font-heading);
    font-size: 3.2rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content h2 span {
    color: var(--primary);
    display: inline-block;
    position: relative;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 30px;
    line-height: 1.6;
}

.cta-buttons {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.hero-visual {
    width: 45%;
}

.hero-background {
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    z-index: 0;
}

.hero-background svg {
    width: 100%;
    height: auto;
}

/* Chat Demo */
.chat-demo {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    max-width: 400px;
    margin: 0 auto;
    border: 1px solid var(--gray);
}

.chat-demo.full {
    max-width: 600px;
}

.chat-header {
    background: var(--gradient);
    color: var(--white);
    padding: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
}

.chat-avatar {
    border-radius: 50%;
}

.chat-status {
    margin-left: auto;
    background-color: rgba(255, 255, 255, 0.3);
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.8rem;
}

.chat-messages {
    padding: 15px;
    height: 280px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
    background-color: #F5F5F5;
}

.message {
    max-width: 75%;
    padding: 12px 15px;
    border-radius: 18px;
    font-size: 0.95rem;
}

.ai-message {
    background-color: #E1F5FE;
    border-top-left-radius: 4px;
    align-self: flex-start;
}

.user-message {
    background-color: var(--primary-light);
    color: var(--white);
    border-top-right-radius: 4px;
    align-self: flex-end;
}

.chat-input {
    display: flex;
    padding: 10px;
    background-color: var(--white);
    border-top: 1px solid var(--gray);
}

.chat-input input {
    flex: 1;
    padding: 12px 15px;
    border: 1px solid var(--gray);
    border-radius: 30px;
    outline: none;
    font-family: var(--font-primary);
}

.send-btn {
    background: none;
    border: none;
    cursor: pointer;
    margin-left: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--accent);
}

.demo-options {
    padding: 15px;
    display: flex;
    gap: 10px;
    background-color: var(--white);
    border-top: 1px solid var(--gray);
}

.demo-option {
    flex: 1;
    padding: 12px;
    background: var(--gradient);
    color: var(--white);
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

/* Features Section */
.features {
    background-color: var(--white);
    padding: 100px 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.feature-card {
    padding: 30px;
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.feature-icon {
    margin-bottom: 20px;
}

.feature-card h3 {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Demo Section */
.demo {
    background-color: #F5F5F5;
    padding: 100px 0;
}

.demo-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 40px;
}

/* How It Works Section */
.how-it-works {
    position: relative;
    padding: 100px 0;
}

.steps {
    max-width: 800px;
    margin: 50px auto 0;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    background-color: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    position: relative;
}

.step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 35px;
    height: 30px;
    width: 2px;
    background-color: var(--primary);
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient);
    color: var(--white);
    font-weight: 700;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.step-content h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.step-content p {
    color: var(--text-light);
}

.section-background {
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    z-index: 0;
}

.section-background svg {
    width: 100%;
    height: auto;
    display: block;
}

/* Pricing Section */
.pricing {
    background-color: #F5F5F5;
    padding: 100px 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.pricing-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.pricing-card.featured {
    border: 2px solid var(--primary);
    transform: scale(1.05);
    z-index: 2;
}

.pricing-card.featured:hover {
    transform: translateY(-5px) scale(1.05);
}

.popular-tag {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--primary);
    color: var(--white);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 5px 10px;
    border-radius: 20px;
}

.pricing-header {
    text-align: center;
    padding: 30px;
    background-color: var(--accent);
}

.pricing-header h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 10px;
}

.price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-lighter);
}

.pricing-features {
    padding: 30px;
    list-style-type: none;
}

.pricing-features li {
    padding: 10px 0;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 10px;
}

.pricing-features li::before {
    content: "✓";
    color: var(--primary);
    font-weight: bold;
}

.pricing-card .btn {
    display: block;
    margin: 0 30px 30px;
}

/* Testimonials Section */
.testimonials {
    padding: 100px 0;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.testimonial-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 30px;
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.testimonial-rating {
    color: #FFC107;
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.testimonial-card p {
    font-style: italic;
    color: var(--text-dark);
    margin-bottom: 15px;
    line-height: 1.7;
}

.testimonial-author {
    text-align: right;
    color: var(--primary);
    font-weight: 600;
}

/* FAQ Section */
.faq {
    background-color: var(--white);
    padding: 100px 0;
}

.faq-grid {
    max-width: 800px;
    margin: 50px auto 0;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.faq-item {
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-question {
    padding: 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--primary);
    font-weight: 600;
    transition: var(--transition);
}

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

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

.faq-answer p {
    padding: 0 20px 20px;
    color: var(--text-light);
    line-height: 1.6;
}

/* CTA Section */
.cta {
    background: var(--gradient);
    color: var(--white);
    padding: 80px 0;
    text-align: center;
}

.cta h2 {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.cta p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

.cta .primary-btn:hover {
    background-color: var(--accent);
}

/* Footer */
footer {
    background-color: #263238;
    color: var(--gray);
    padding: 70px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 50px;
    margin-bottom: 40px;
}

.footer-brand {
    max-width: 350px;
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.footer-logo-svg {
    margin-right: 15px;
}

.footer-logo h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 5px;
}

.footer-logo p {
    font-size: 0.9rem;
    color: var(--gray);
}

.footer-description {
    line-height: 1.6;
    margin-bottom: 20px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.footer-column h4 {
    color: var(--white);
    margin-bottom: 20px;
    font-family: var(--font-heading);
    font-size: 1.1rem;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

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

.footer-column a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    gap: 10px;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.9rem;
}

.disclaimer {
    font-size: 0.8rem;
    color: var(--text-lighter);
    max-width: 700px;
    margin: 0 auto;
}

/* Media Queries */
@media (max-width: 992px) {
    .section-title {
        font-size: 2.2rem;
    }
    
    .hero-content h2 {
        font-size: 2.5rem;
    }
    
    .hero-container {
        flex-direction: column;
        gap: 40px;
    }
    
    .hero-content {
        text-align: center;
        max-width: 100%;
    }
    
    .hero-visual {
        width: 80%;
    }
    
    .cta-buttons {
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-brand {
        max-width: 100%;
        margin-bottom: 20px;
    }
}

@media (max-width: 768px) {
    .main-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .mobile-menu {
        display: block;
    }
    
    section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .hero {
        padding: 120px 0 80px;
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .hero-visual {
        width: 100%;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.featured {
        transform: none;
    }
    
    .pricing-card.featured:hover {
        transform: translateY(-5px);
    }
    
    .testimonial-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .chat-demo.full {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 1.6rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .hero-content h2 {
        font-size: 1.8rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .cta h2 {
        font-size: 1.8rem;
    }
}