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

:root {
    --primary-color: #1E3A8A; /* Deep Blue */
    --secondary-color: #3B82F6; /* Royal Blue */
    --accent-color: #10B981; /* Emerald Green */
    --warning-color: #F59E0B; /* Amber */
    --neutral-light: #F8FAFC; /* Cool Gray */
    --neutral-dark: #1F2937; /* Charcoal */
    --white: #FFFFFF;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --border-color: #F59E0B;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--white);
}

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

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo h2 {
    color: var(--primary-color);
    font-size: 1.75rem;
    font-weight: 700;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-signin {
    color: var(--text-secondary);
}

.nav-cta {
    background: var(--accent-color);
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.nav-cta:hover {
    background: #059669;
    transform: translateY(-1px);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger .bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--neutral-light) 0%, #EBF4FF 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.2;
    margin-bottom: 24px;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    padding: 14px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    display: inline-block;
    text-align: center;
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(16, 185, 129, 0.3);
}

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

.btn-secondary:hover {
    background: var(--secondary-color);
    color: white;
    transform: translateY(-2px);
}

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

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

.btn-full {
    width: 100%;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 400px;
    position: relative;
}

.ai-avatar {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.avatar-circle {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.3);
    position: relative;
    overflow: hidden;
}

.avatar-circle::before {
    content: '';
    position: absolute;
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    top: 30%;
    left: 50%;
    transform: translateX(-50%);
}

.voice-waves {
    position: absolute;
    display: flex;
    gap: 8px;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
}

.wave {
    width: 6px;
    height: 40px;
    background: var(--accent-color);
    border-radius: 3px;
    animation: wave 1.5s ease-in-out infinite;
}

.wave:nth-child(2) {
    animation-delay: 0.2s;
}

.wave:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes wave {
    0%, 100% {
        height: 20px;
        opacity: 0.5;
    }
    50% {
        height: 40px;
        opacity: 1;
    }
}

/* Features Section */
.features {
    padding: 80px 0;
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.feature-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
    border-color: var(--accent-color);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: white;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 16px;
}

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

/* How It Works Section */
.how-it-works {
    padding: 80px 0;
    background: var(--neutral-light);
}

.steps-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.step {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    max-width: 300px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--accent-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 24px;
}

.step h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.step p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.step-arrow {
    font-size: 2rem;
    color: var(--accent-color);
    font-weight: bold;
}

/* Pricing Section */
.pricing {
    padding: 80px 0;
    background: var(--white);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--white);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    position: relative;
    transition: all 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.pricing-card.featured {
    border-color: var(--accent-color);
    transform: scale(1.05);
    background: linear-gradient(135deg, var(--white) 0%, #F0FDF4 100%);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-color);
    color: white;
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.pricing-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.price {
    margin-bottom: 32px;
}

.currency {
    font-size: 1.25rem;
    color: var(--text-secondary);
    vertical-align: top;
}

.amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.period {
    font-size: 1rem;
    color: var(--text-secondary);
}

.pricing-features {
    list-style: none;
    margin-bottom: 32px;
}

.pricing-features li {
    padding: 8px 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 24px;
}

.pricing-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

/* Testimonials Section */
.testimonials {
    padding: 80px 0;
    background: var(--neutral-light);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.testimonial-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.testimonial-content p {
    font-size: 1.125rem;
    line-height: 1.6;
    color: var(--text-primary);
    margin-bottom: 24px;
    font-style: italic;
}

.testimonial-content p::before {
    content: '"';
    font-size: 2rem;
    color: var(--accent-color);
    line-height: 1;
}

.testimonial-content p::after {
    content: '"';
    font-size: 2rem;
    color: var(--accent-color);
    line-height: 1;
}

.author-info h4 {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 4px;
}

.author-info span {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background: var(--white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-info h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 24px;
}

.contact-info p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--accent-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.contact-item h4 {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 4px;
}

.contact-item p {
    color: var(--text-secondary);
    margin: 0;
}

.contact-form {
    background: var(--neutral-light);
    padding: 40px;
    border-radius: 16px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
.footer {
    background: var(--neutral-dark);
    color: var(--neutral-light);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    color: var(--accent-color);
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.footer-brand p {
    color: #9CA3AF;
    line-height: 1.6;
}

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

.footer-column h4 {
    color: var(--neutral-light);
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 8px;
}

.footer-column ul li a {
    color: #9CA3AF;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-column ul li a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copyright p {
    color: #9CA3AF;
}

.footer-social {
    display: flex;
    gap: 16px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: #374151;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #9CA3AF;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--accent-color);
    color: white;
    transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 20px 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu a {
        padding: 10px 0;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

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

    .hero-description {
        font-size: 1.125rem;
    }

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

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

    .features-grid {
        grid-template-columns: 1fr;
    }

    .steps-container {
        flex-direction: column;
    }

    .step-arrow {
        transform: rotate(90deg);
    }

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

    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .feature-card,
    .step,
    .testimonial-card {
        padding: 30px 20px;
    }

    .pricing-card {
        padding: 30px 20px;
    }

    .contact-form {
        padding: 30px 20px;
    }

    .sections {
        padding: 60px 0;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}