:root {
    /* Theme Colors - Customizable via environment variables */
    --primary-color: #3e5bdd;
    --secondary-color: #3e5bdd;
    --accent-color: #10b981;
    --text-color: #333333;
    --light-text-color: #666666;
    --background-color: #f9fafb;
    --card-background: #ffffff;

    /* Derived Colors */
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    --gradient-light: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --error-color: #ef4444;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(102, 126, 234, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--background-color);
    min-height: 100vh;
}


/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    box-shadow: 0 2px 20px var(--shadow-color);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

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

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

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

.language-switcher {
    display: flex;
    gap: 0.5rem;
    margin-right: 1rem;
}

.lang-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    background: var(--card-background);
    color: var(--light-text-color);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.85rem;
    font-weight: 500;
}

.lang-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.lang-btn.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 0.95rem;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px var(--shadow-hover);
}

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

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8rem 5% 4rem;
    background: var(--gradient-light);
    position: relative;
    overflow: hidden;
}

/* Make hero more prominent with stronger gradient */
@media (min-width: 768px) {
    .hero {
        background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    }
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, var(--primary-color) 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--secondary-color) 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

/* Hero background elements */
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(118, 75, 162, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    max-width: 600px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    background: var(--gradient-primary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.25rem;
    color: var(--light-text-color);
    margin-bottom: 2rem;
    line-height: 1.8;
}

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

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.chat-preview {
    background: var(--card-background);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    max-width: 450px;
    width: 100%;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-20px);
    }
}

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

.chat-message.user {
    flex-direction: row-reverse;
}

.chat-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.chat-avatar.bot {
    background: var(--gradient-primary);
}

.chat-avatar.user {
    background: #e5e7eb;
}

.chat-bubble {
    background: #f3f4f6;
    padding: 1rem;
    border-radius: 12px;
    max-width: 80%;
}

.chat-message.user .chat-bubble {
    background: var(--gradient-primary);
    color: white;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(118, 75, 162, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    max-width: 600px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    background: var(--gradient-primary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.25rem;
    color: var(--light-text-color);
    margin-bottom: 2rem;
    line-height: 1.8;
}

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

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.chat-preview {
    background: var(--card-background);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    max-width: 450px;
    width: 100%;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-20px);
    }
}

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

.chat-message.user {
    flex-direction: row-reverse;
}

.chat-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.chat-avatar.bot {
    background: var(--gradient-primary);
}

.chat-avatar.user {
    background: #e5e7eb;
}

.chat-bubble {
    background: #f3f4f6;
    padding: 1rem;
    border-radius: 12px;
    max-width: 80%;
}

.chat-message.user .chat-bubble {
    background: var(--gradient-primary);
    color: white;
}

/* Features Section */
.features {
    padding: 6rem 5%;
    background: var(--card-background);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--light-text-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--card-background);
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px var(--shadow-hover);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

.feature-card p {
    color: var(--light-text-color);
    line-height: 1.7;
}

/* Benefits Section */
.benefits {
    padding: 6rem 5%;
    background: var(--gradient-light);
}

.benefits-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
    align-items: center;
}

.benefits-image {
    position: relative;
}

.benefits-stats {
    background: var(--card-background);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.stat-item:last-child {
    border-bottom: none;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--light-text-color);
    font-size: 0.95rem;
    margin-top: 0.5rem;
}

.benefits-list {
    list-style: none;
}

.benefits-list li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--card-background);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.benefits-list li:hover {
    transform: translateX(10px);
    box-shadow: 0 10px 30px var(--shadow-hover);
}

.benefit-icon {
    width: 24px;
    height: 24px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.8rem;
    flex-shrink: 0;
    margin-top: 2px;
}

/* How It Works Section */
.how-it-works {
    padding: 6rem 5%;
    background: var(--card-background);
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.step-card {
    text-align: center;
    padding: 2rem;
    position: relative;
}

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

.step-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

.step-card p {
    color: var(--light-text-color);
    line-height: 1.7;
}

/* Pricing Section */
.pricing {
    padding: 6rem 5%;
    background: var(--gradient-light);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--card-background);
    border-radius: 20px;
    padding: 3rem 2rem;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.pricing-card.featured {
    border-color: var(--primary-color);
    position: relative;
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-10px);
}

.featured-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-size: 0.85rem;
    font-weight: 600;
}

.pricing-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.pricing-card .price {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 1.5rem 0;
}

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

.pricing-features {
    list-style: none;
    margin: 2rem 0;
    text-align: left;
}

.pricing-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--light-text-color);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.check-icon {
    color: var(--success-color);
    font-weight: bold;
}

/* Testimonials Section */
.testimonials {
    padding: 6rem 5%;
    background: var(--card-background);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.testimonial-card {
    background: #f9fafb;
    padding: 2rem;
    border-radius: 16px;
    transition: all 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px var(--shadow-hover);
}

.testimonial-text {
    font-size: 1.05rem;
    color: var(--light-text-color);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-style: italic;
}

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

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.2rem;
}

.author-info h4 {
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.25rem;
}

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

/* FAQ Section */
.faq {
    padding: 6rem 5%;
    background: var(--gradient-light);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--card-background);
    border-radius: 12px;
    margin-bottom: 1rem;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--text-color);
}

.faq-question:hover {
    background: #f9fafb;
}

.faq-toggle {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.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 1.5rem 1.5rem;
    color: var(--light-text-color);
    line-height: 1.8;
}

/* CTA Section */
.cta-section {
    padding: 6rem 5%;
    background: var(--gradient-primary);
    text-align: center;
    color: white;
}

.cta-section h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

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

.cta-section .btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

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

/* Footer */
.footer {
    background: #1f2937;
    color: white;
    padding: 4rem 5% 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto 3rem;
}

.footer-section h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.footer-section p {
    color: #9ca3af;
    line-height: 1.7;
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    color: #9ca3af;
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 7rem;
    }

    .hero-content {
        margin-bottom: 3rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--card-background);
        flex-direction: column;
        padding: 2rem;
        box-shadow: 0 10px 30px var(--shadow-color);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-buttons {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .pricing-card.featured {
        transform: none;
    }

    .pricing-card.featured:hover {
        transform: translateY(-10px);
    }
}

@media (max-width: 640px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .cta-section h2 {
        font-size: 2rem;
    }
}