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

:root {
    --primary-color: #8b5cf6;
    --secondary-color: #ec4899;
    --accent-color: #fbbf24;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --success-color: #10b981;
}

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

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

/* Navigation */
.navbar {
    background: var(--bg-white);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

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

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

.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);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 0;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.tagline {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

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

.btn {
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: #f59e0b;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

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

.fairy-illustration {
    font-size: 8rem;
    text-align: center;
}

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

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-dark);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

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

/* Demo Section */
.demo {
    padding: 80px 0;
}

.demo h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.demo-box {
    background: var(--bg-light);
    border-radius: 12px;
    padding: 3rem;
    max-width: 900px;
    margin: 0 auto;
}

.input-section label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-dark);
}

.input-section textarea,
.input-section input {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    margin-bottom: 1.5rem;
    font-family: inherit;
}

.input-section textarea {
    min-height: 100px;
    resize: vertical;
}

.input-section button {
    width: 100%;
}

.output-section {
    margin-top: 2rem;
}

.output-section h3 {
    margin-bottom: 1rem;
}

.reply-suggestions {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    min-height: 150px;
}

.placeholder {
    color: var(--text-light);
    font-style: italic;
    text-align: center;
}

.reply-option {
    background: var(--bg-light);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    border-left: 4px solid var(--primary-color);
    cursor: pointer;
    transition: all 0.3s;
}

.reply-option:hover {
    background: #e0e7ff;
    transform: translateX(5px);
}

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

.testimonials h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.testimonial-card p {
    font-style: italic;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.author {
    font-weight: 600;
    color: var(--primary-color);
}

/* Footer */
footer {
    background: var(--text-dark);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #d1d5db;
    text-decoration: none;
    transition: color 0.3s;
}

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

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

/* Page Header */
.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 60px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.25rem;
    opacity: 0.95;
}

/* Steps Section */
.steps {
    padding: 80px 0;
}

.step {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 2rem;
    margin-bottom: 4rem;
    align-items: start;
}

.step-number {
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: bold;
}

.step-content h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.step-content p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.step-example {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 8px;
}

.message-bubble {
    padding: 12px 16px;
    border-radius: 18px;
    margin-bottom: 0.5rem;
    max-width: 80%;
}

.message-bubble.received {
    background: #e5e7eb;
    color: var(--text-dark);
}

.message-bubble.sent {
    background: var(--primary-color);
    color: white;
    margin-left: auto;
}

.context-tag {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

/* Smart Features */
.how-smart {
    padding: 80px 0;
    background: var(--bg-light);
}

.how-smart h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.smart-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.smart-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.smart-card h3 {
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.smart-card p {
    color: var(--text-light);
}

/* CTA Section */
.cta-section {
    padding: 80px 0;
    text-align: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.cta-section p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
}

/* Examples Page */
.examples {
    padding: 80px 0;
}

.example-card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.example-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.example-header h3 {
    color: var(--text-dark);
}

.scenario-tag {
    background: var(--accent-color);
    color: var(--text-dark);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.conversation {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 8px;
}

.thinking {
    text-align: center;
    color: var(--text-light);
    font-style: italic;
    margin: 1rem 0;
    padding: 1rem;
}

.fairy-suggestions {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 2px dashed var(--border-color);
}

.suggestion-label {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* About Page */
.about-story {
    padding: 80px 0;
}

.story-content {
    max-width: 800px;
    margin: 0 auto;
}

.story-content h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--text-dark);
}

.story-content p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.values {
    padding: 80px 0;
    background: var(--bg-light);
}

.values h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.value-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.value-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.value-card h3 {
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.value-card p {
    color: var(--text-light);
}

.use-cases {
    padding: 80px 0;
}

.use-cases h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.use-case-list {
    max-width: 800px;
    margin: 0 auto;
}

.use-case {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--primary-color);
}

.use-case h3 {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.use-case p {
    color: var(--text-light);
}

.faq {
    padding: 80px 0;
    background: var(--bg-light);
}

.faq h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

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

.faq-item {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.faq-item h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.faq-item p {
    color: var(--text-light);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .fairy-illustration {
        font-size: 5rem;
    }
    
    .nav-links {
        gap: 1rem;
        font-size: 0.9rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .step {
        grid-template-columns: 1fr;
    }
    
    .step-number {
        margin: 0 auto;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
}