/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: #121212;
    color: #FFFFFF;
    line-height: 1.6;
}

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

/* Navigation */
.navbar {
    background-color: rgba(30, 30, 30, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid #2C2C2C;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #4F8EF7;
}

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

.nav-menu a {
    color: #B0B0B0;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: #4F8EF7;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #121212 0%, #1E1E1E 100%);
    padding-top: 80px;
}

.hero-content {
    max-width: 600px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #FFFFFF 0%, #90CAF9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #B0B0B0;
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

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

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background-color: #4F8EF7;
    color: white;
}

.btn-primary:hover {
    background-color: #357AE8;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: #90CAF9;
    border: 2px solid #90CAF9;
}

.btn-secondary:hover {
    background-color: #90CAF9;
    color: white;
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.data-flow {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 2rem;
}

.data-flow div {
    padding: 1rem;
    background-color: #1E1E1E;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

/* Sections */
.section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

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

.section h2 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #FFFFFF;
}

.section-subtitle {
    font-size: 1.25rem;
    color: #B0B0B0;
    max-width: 600px;
    margin: 0 auto;
}

/* Cards */
.card {
    background-color: #1E1E1E;
    border-radius: 16px;
    padding: 3rem;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    border: 1px solid #2C2C2C;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.card-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.key-points {
    list-style: none;
}

.key-points li {
    padding: 0.5rem 0;
    color: #B0B0B0;
    position: relative;
    padding-left: 1.5rem;
}

.key-points li::before {
    content: "✓";
    color: #4CAF50;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.card-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.visual-placeholder {
    font-size: 4rem;
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Process Steps */
.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.step {
    text-align: center;
    padding: 2rem;
    background-color: #1E1E1E;
    border-radius: 12px;
    border: 1px solid #2C2C2C;
}

.step-number {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.step h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: #FFFFFF;
}

.step p {
    color: #B0B0B0;
}

.text-center {
    text-align: center;
}

/* Tech Cards */
.tech-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.tech-card {
    background-color: #1E1E1E;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid #2C2C2C;
    text-align: center;
}

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

.tech-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #FFFFFF;
}

.tech-card p {
    color: #B0B0B0;
}

/* Venn Diagram */
.venn-diagram {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    margin: 2rem 0;
}

.venn-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid #4F8EF7;
    color: #FFFFFF;
    font-weight: 600;
    position: relative;
}

.venn-intersection {
    padding: 1rem;
    background-color: #4F8EF7;
    color: white;
    border-radius: 8px;
    font-weight: 600;
}

/* Demo Section */
.demo-section {
    background: linear-gradient(135deg, #1E1E1E 0%, #121212 100%);
}

.demo-card {
    background-color: #1E1E1E;
    border-radius: 16px;
    padding: 3rem;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    border: 1px solid #2C2C2C;
    text-align: center;
}

.demo-interface {
    margin-bottom: 2rem;
}

.query-box {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.query-input {
    flex: 1;
    padding: 1rem;
    border: 2px solid #2C2C2C;
    border-radius: 8px;
    background-color: #121212;
    color: #FFFFFF;
    font-size: 1rem;
}

.query-input::placeholder {
    color: #B0B0B0;
}

.query-btn {
    padding: 1rem 2rem;
    background-color: #4F8EF7;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
}

.query-btn:hover {
    background-color: #357AE8;
}

.results-panel {
    background-color: #121212;
    border: 1px solid #2C2C2C;
    border-radius: 8px;
    padding: 2rem;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.result-placeholder {
    color: #B0B0B0;
    text-align: center;
}

/* Footer */
.footer {
    background-color: #1E1E1E;
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid #2C2C2C;
}

.footer p {
    color: #B0B0B0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero {
        text-align: center;
        padding: 100px 0 2rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .card {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .process-steps {
        grid-template-columns: 1fr;
    }
    
    .tech-cards {
        grid-template-columns: 1fr;
    }
    
    .venn-diagram {
        flex-direction: column;
    }
    
    .query-box {
        flex-direction: column;
    }
    
    .data-flow {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .section h2 {
        font-size: 2rem;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
}

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

/* Focus states for accessibility */
.btn:focus,
.query-input:focus,
.query-btn:focus {
    outline: 2px solid #4F8EF7;
    outline-offset: 2px;
}

/* Animation for visual elements */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card,
.step,
.tech-card {
    animation: fadeInUp 0.6s ease-out;
}