* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Vazirmatn', Tahoma, Arial, sans-serif; line-height: 1.8; color: #1a1a2e; background: #fff; }

/* Header */
.header { position: fixed; top: 0; width: 100%; background: rgba(255,255,255,0.95); backdrop-filter: blur(10px); box-shadow: 0 1px 10px rgba(0,0,0,0.06); z-index: 1000; }
.nav { display: flex; justify-content: space-between; align-items: center; max-width: 1200px; margin: 0 auto; padding: 16px 24px; }
.logo { font-size: 24px; font-weight: 800; color: #0066FF; }
.nav-links { list-style: none; display: flex; gap: 20px; align-items: center; }
.nav-links a { text-decoration: none; color: #555; font-size: 15px; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: #0066FF; }
.btn-login { background: #0066FF; color: #fff !important; padding: 8px 20px; border-radius: 10px; }
.btn-login:hover { background: #0052cc; }

/* Hero */
.hero { display: flex; align-items: center; justify-content: space-between; max-width: 1200px; margin: 0 auto; padding: 120px 24px 60px; gap: 40px; }
.hero-content { flex: 1; }
.hero-content h1 { font-size: 42px; margin-bottom: 20px; color: #0a0a1a; font-weight: 800; }
.hero-subtitle { font-size: 18px; color: #666; margin-bottom: 30px; }
.hero-buttons { display: flex; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.btn-primary { display: inline-block; background: #0066FF; color: #fff; padding: 14px 32px; border-radius: 12px; text-decoration: none; font-size: 17px; font-weight: 700; transition: all 0.3s; }
.btn-primary:hover { background: #0052cc; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,102,255,0.3); }
.btn-secondary { display: inline-block; background: #fff; color: #0066FF; border: 2px solid #0066FF; padding: 12px 30px; border-radius: 12px; text-decoration: none; font-size: 17px; font-weight: 600; transition: all 0.3s; }
.btn-secondary:hover { background: #f0f6ff; }
.hero-badge { display: inline-block; background: #e8f0ff; color: #0066FF; padding: 8px 20px; border-radius: 20px; font-size: 14px; font-weight: 600; }

/* Chat Preview */
.hero-image { flex: 1; }
.chat-preview { background: #fff; border-radius: 20px; box-shadow: 0 10px 40px rgba(0,0,0,0.12); overflow: hidden; }
.chat-header { background: #0066FF; color: #fff; padding: 14px 20px; display: flex; align-items: center; gap: 8px; }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot.green { background: #00ff88; }
.chat-body { padding: 20px; display: flex; flex-direction: column; gap: 12px; }
.msg { max-width: 80%; padding: 12px 16px; border-radius: 14px; font-size: 14px; }
.msg.bot { background: #f0f6ff; align-self: flex-start; border-bottom-left-radius: 4px; }
.msg.user { background: #e8f0ff; align-self: flex-end; border-bottom-right-radius: 4px; }

/* Demo */
.demo-section { max-width: 800px; margin: 0 auto; padding: 60px 24px; text-align: center; }
.demo-section h2 { font-size: 32px; margin-bottom: 12px; }
.demo-subtitle { color: #666; margin-bottom: 30px; }
.demo-container { background: #fff; border-radius: 16px; box-shadow: 0 4px 24px rgba(0,0,0,0.1); overflow: hidden; }
.demo-iframe { width: 100%; height: 500px; border: none; }

/* Features */
.features { max-width: 1200px; margin: 0 auto; padding: 80px 24px; }
.features h2 { text-align: center; font-size: 32px; margin-bottom: 40px; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 24px; }
.feature-card { background: #fff; padding: 32px; border-radius: 16px; box-shadow: 0 2px 12px rgba(0,0,0,0.06); text-align: center; transition: transform 0.3s; }
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.1); }
.feature-icon { font-size: 48px; margin-bottom: 16px; }
.feature-card h3 { font-size: 20px; margin-bottom: 12px; }
.feature-card p { color: #666; font-size: 15px; }

/* How It Works */
.how-it-works { background: #f8faff; padding: 80px 24px; }
.how-it-works h2 { text-align: center; font-size: 32px; margin-bottom: 40px; }
.steps { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 24px; max-width: 1200px; margin: 0 auto; }
.step { background: #fff; padding: 32px; border-radius: 16px; text-align: center; }
.step-number { width: 50px; height: 50px; background: #0066FF; color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 24px; font-weight: 800; margin: 0 auto 16px; }
.step h3 { margin-bottom: 10px; }
.step p { color: #666; font-size: 15px; }

/* Pricing */
.pricing { max-width: 1200px; margin: 0 auto; padding: 80px 24px; }
.pricing h2 { text-align: center; font-size: 32px; margin-bottom: 40px; }
.pricing-cards { display: flex; justify-content: center; }
.pricing-card { background: #fff; border-radius: 24px; padding: 40px; box-shadow: 0 4px 24px rgba(0,0,0,0.1); max-width: 420px; position: relative; border: 2px solid #0066FF; }
.pricing-badge { position: absolute; top: -14px; right: 50%; transform: translateX(50%); background: #0066FF; color: #fff; padding: 6px 20px; border-radius: 20px; font-size: 13px; font-weight: 700; }
.pricing-card h3 { text-align: center; font-size: 24px; margin-bottom: 20px; }
.price { text-align: center; font-size: 42px; font-weight: 800; color: #0066FF; }
.price span { font-size: 18px; color: #666; font-weight: 500; }
.price-note { text-align: center; color: #0066FF; margin: 10px 0 24px; font-weight: 600; }
.pricing-features { list-style: none; margin-bottom: 30px; }
.pricing-features li { padding: 10px 0; border-bottom: 1px solid #f0f0f0; font-size: 15px; }
.pricing-card .btn-primary { display: block; text-align: center; }
.pricing-note { text-align: center; color: #666; margin-top: 24px; }

/* Blog */
.blog-section { max-width: 1200px; margin: 0 auto; padding: 80px 24px; }
.blog-section h2 { text-align: center; font-size: 32px; margin-bottom: 40px; }
.blog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
.blog-card { background: #fff; padding: 24px; border-radius: 16px; box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
.blog-card h3 { margin-bottom: 10px; }
.blog-card p { color: #666; margin-bottom: 12px; }
.blog-card a { color: #0066FF; text-decoration: none; font-weight: 600; }

/* FAQ */
.faq { background: #f8faff; padding: 80px 24px; }
.faq h2 { text-align: center; font-size: 32px; margin-bottom: 40px; }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: #fff; padding: 24px; border-radius: 12px; margin-bottom: 16px; }
.faq-item h3 { font-size: 18px; margin-bottom: 10px; color: #1a1a2e; }
.faq-item p { color: #666; font-size: 15px; }

/* Contact */
.contact-section { max-width: 800px; margin: 0 auto; padding: 80px 24px; text-align: center; }
.contact-section h2 { font-size: 32px; margin-bottom: 30px; }
.contact-info { margin-bottom: 30px; }
.contact-item { font-size: 16px; margin-bottom: 12px; }
.social-links { display: flex; gap: 16px; justify-content: center; margin-top: 20px; }
.social-link { display: inline-block; padding: 10px 20px; background: #f0f6ff; color: #0066FF; border-radius: 10px; text-decoration: none; font-weight: 600; transition: all 0.2s; }
.social-link:hover { background: #0066FF; color: #fff; }

/* Footer */
.footer { background: #0a0a1a; color: #ccc; padding: 60px 24px 20px; }
.footer-content { display: flex; justify-content: space-around; max-width: 1200px; margin: 0 auto; flex-wrap: wrap; gap: 40px; }
.footer-section h3 { color: #fff; margin-bottom: 16px; }
.footer-section ul { list-style: none; }
.footer-section ul li { margin-bottom: 8px; }
.footer-section a { color: #ccc; text-decoration: none; }
.footer-section a:hover { color: #0066FF; }
.footer-bottom { text-align: center; margin-top: 40px; padding-top: 20px; border-top: 1px solid #333; }

/* Mobile */
@media (max-width: 768px) {
    .hero { flex-direction: column; padding: 100px 16px 40px; }
    .hero-content h1 { font-size: 28px; }
    .nav-links { display: none; }
    .features-grid, .steps, .blog-grid { grid-template-columns: 1fr; }
    .pricing-card { max-width: 100%; }
}