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

:root {
    --primary-color: #6B46C1;
    --primary-light: #9F7AEA;
    --primary-dark: #553C9A;
    --secondary-color: #ED8936;
    --text-dark: #2D3748;
    --text-light: #718096;
    --bg-light: #F7FAFC;
    --white: #FFFFFF;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.15);
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Typography */
h1, h2, h3, h4 {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    line-height: 1.2;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 600;
}

.logo-icon {
    width: 50px;
    height: 50px;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-5px); }
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
}

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

.cta-button {
    background: var(--gradient);
    color: white !important;
    padding: 10px 20px;
    border-radius: 25px;
    transition: transform 0.3s, box-shadow 0.3s;
}

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

/* Hero Section */
.hero {
    padding-top: 80px;
    background: linear-gradient(180deg, #F7FAFC 0%, #FFFFFF 100%);
    overflow: hidden;
}

.hero-content {
    padding: 80px 0;
    text-align: center;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 20px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: fadeInUp 0.8s ease-out;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-cta {
    margin-bottom: 60px;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.primary-button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--gradient);
    color: white;
    padding: 15px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.primary-button.large {
    padding: 20px 40px;
    font-size: 1.1rem;
}

.hero-note {
    margin-top: 15px;
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Chat Preview */
.hero-preview {
    max-width: 600px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.chat-preview {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--shadow);
    text-align: left;
}

.chat-message {
    padding: 15px 20px;
    border-radius: 15px;
    margin-bottom: 15px;
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.chat-message.user {
    background: var(--bg-light);
    margin-left: auto;
    max-width: 70%;
}

.chat-message.bot {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    max-width: 85%;
}

/* Features Section */
.features {
    padding: 100px 0;
    background: white;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 20px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--bg-light);
    padding: 40px;
    border-radius: 20px;
    transition: transform 0.3s, box-shadow 0.3s;
}

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

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

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* How It Works */
.how-it-works {
    padding: 100px 0;
    background: var(--bg-light);
}

.steps {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
    margin-bottom: 80px;
    flex-wrap: wrap;
}

.step {
    text-align: center;
    max-width: 250px;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 20px;
}

.step h3 {
    font-size: 1.25rem;
    margin-bottom: 10px;
}

.step-arrow {
    font-size: 2rem;
    color: var(--primary-light);
}

/* Demo Section */
.demo-section {
    text-align: center;
}

.demo-section h3 {
    font-size: 2rem;
    margin-bottom: 40px;
}

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

.demo-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

.demo-card:hover {
    transform: translateY(-5px);
}

.demo-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.demo-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
}

.demo-icon {
    font-size: 3rem;
    margin-bottom: 10px;
}

.demo-placeholder h4 {
    font-size: 1.25rem;
    margin: 0;
}

.demo-card p {
    padding: 20px;
    color: var(--text-light);
}

/* Pricing Section */
.pricing {
    padding: 100px 0;
    background: white;
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-light);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    position: relative;
    transition: transform 0.3s, box-shadow 0.3s;
}

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

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

.badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient);
    color: white;
    padding: 5px 20px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

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

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

.price-note {
    color: var(--text-light);
    margin-bottom: 30px;
}

.pricing-card ul {
    list-style: none;
    margin-bottom: 30px;
    text-align: left;
}

.pricing-card li {
    padding: 10px 0;
    color: var(--text-light);
}

.pricing-button {
    display: inline-block;
    width: 100%;
    padding: 12px 20px;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.pricing-button:hover {
    background: var(--primary-color);
    color: white;
}

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

.pricing-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Testimonials */
.testimonials {
    padding: 100px 0;
    background: var(--bg-light);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.testimonial {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.testimonial p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 20px;
    font-style: italic;
}

.author strong {
    display: block;
    margin-bottom: 5px;
}

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

/* Final CTA */
.final-cta {
    padding: 100px 0;
    background: var(--gradient);
    color: white;
    text-align: center;
}

.final-cta h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.final-cta p {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 60px 0 30px;
}

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

.footer-section h4 {
    margin-bottom: 20px;
}

.footer-section a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    padding: 5px 0;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-cards {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.featured {
        transform: scale(1);
    }
    
    .steps {
        flex-direction: column;
    }
    
    .step-arrow {
        transform: rotate(90deg);
    }
}