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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #7c3aed;
    --accent-color: #10b981;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --border-color: #e5e7eb;
    --gradient-start: #2563eb;
    --gradient-end: #7c3aed;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-icon {
    font-size: 2rem;
}

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

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

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

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 0.5rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--text-light);
}

/* Hero Section */
.hero {
    padding: 6rem 0;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.gradient-text {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
    display: inline-block;
}

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

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    border: 2px solid var(--primary-color);
    transition: all 0.3s;
    display: inline-block;
}

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

.hero-badges {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.badge {
    background: white;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

/* Code Preview */
.hero-visual {
    display: flex;
    justify-content: center;
}

.code-preview {
    background: #1e293b;
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 600px;
}

.code-header {
    background: #0f172a;
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.code-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.code-dot.red { background: #ef4444; }
.code-dot.yellow { background: #f59e0b; }
.code-dot.green { background: #10b981; }

.code-title {
    margin-left: auto;
    color: #94a3b8;
    font-size: 0.875rem;
}

.code-content {
    padding: 1.5rem;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.8;
    color: #e2e8f0;
    overflow-x: auto;
}

.code-content pre {
    margin: 0;
}

.code-comment { color: #64748b; }
.code-keyword { color: #38bdf8; }
.code-string { color: #86efac; }
.code-function { color: #f472b6; }
.code-method { color: #fbbf24; }

/* Section Styles */
section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

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

.section-header p {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

/* Features Section */
.features {
    background: var(--bg-primary);
}

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

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
    box-shadow: var(--shadow-sm);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

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

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

/* Demo Section */
.demo {
    background: var(--bg-secondary);
}

.demo-container {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.demo-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.demo-tab {
    background: none;
    border: none;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
}

.demo-tab:hover {
    color: var(--primary-color);
}

.demo-tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.demo-item {
    display: none;
}

.demo-item.active {
    display: block;
}

.demo-query {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin-bottom: 2rem;
    border-left: 4px solid var(--primary-color);
}

.query-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.query-text {
    font-size: 1.125rem;
    color: var(--text-primary);
    font-style: italic;
}

.demo-response {
    margin-top: 2rem;
}

.response-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.response-content {
    background: white;
    padding: 1.5rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.response-content p {
    margin-bottom: 1rem;
    color: var(--text-primary);
    line-height: 1.8;
}

.response-content ol,
.response-content ul {
    margin-left: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.response-content li {
    margin-bottom: 0.5rem;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.comparison-table th,
.comparison-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-primary);
}

.response-visual {
    background: var(--bg-tertiary);
    padding: 3rem;
    border-radius: 0.5rem;
    text-align: center;
    border: 2px dashed var(--border-color);
}

.visual-placeholder {
    font-size: 1.5rem;
    color: var(--text-light);
}

/* Architecture Section */
.architecture {
    background: var(--bg-primary);
}

.architecture-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.arch-diagram {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.arch-layer {
    background: white;
    padding: 2rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.layer-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.layer-tech {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.tech-tag {
    display: inline-block;
    background: var(--bg-secondary);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    margin-right: 0.5rem;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-primary);
}

.arch-arrow {
    text-align: center;
    font-size: 1.5rem;
    color: var(--text-light);
}

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

.module-list li {
    padding: 1rem;
    margin-bottom: 0.5rem;
    background: white;
    border-radius: 0.5rem;
    border-left: 4px solid var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.module-list strong {
    color: var(--primary-color);
}

/* Get Started Section */
.get-started {
    background: var(--bg-secondary);
}

.get-started-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

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

.step {
    display: flex;
    gap: 1.5rem;
    align-items: start;
}

.step-number {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.step-content pre {
    background: #1e293b;
    color: #e2e8f0;
    padding: 1rem;
    border-radius: 0.5rem;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
}

.quick-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.link-card {
    background: white;
    padding: 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
    text-decoration: none;
    display: flex;
    gap: 1rem;
    align-items: center;
    transition: all 0.3s;
    box-shadow: var(--shadow-sm);
}

.link-card:hover {
    transform: translateX(4px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.link-icon {
    font-size: 2rem;
}

.link-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.link-content p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background: #111827;
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-description {
    color: #9ca3af;
    line-height: 1.7;
}

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

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

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

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

.footer-section p {
    color: #9ca3af;
    line-height: 1.7;
    margin-bottom: 0.5rem;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-bottom p {
    color: #9ca3af;
    margin: 0;
}

.footer-author {
    font-weight: 500;
    color: white !important;
}

.footer-author strong {
    color: white;
    font-weight: 700;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .architecture-content,
    .get-started-content {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}