:root {
    --primary: #3B82F6;
    --primary-dark: #2563EB;
    --secondary: #8B5CF6;
    --bg-main: #FAFAF9;
    --bg-surface: #FFFFFF;
    --bg-light: #F1F5F9;
    --text-main: #0F172A;
    --text-muted: #64748B;
    --border: #E2E8F0;
    --success: #10B981;
    --danger: #EF4444;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 72px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    z-index: 100;
    display: flex;
    align-items: center;
}

.nav-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-main);
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 8px;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

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

/* Hero Section */
.hero {
    position: relative;
    padding: 160px 24px 100px;
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 800px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.badge {
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary-dark);
    padding: 6px 16px;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.hero-title {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.btn {
    padding: 14px 28px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(59, 130, 246, 0.39);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.23);
}

.btn-secondary {
    background: white;
    color: var(--text-main);
    border: 1px solid var(--border);
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.btn-secondary:hover {
    border-color: #cbd5e1;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

/* Background effects */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: float 10s infinite ease-in-out alternate;
}

.blob-1 {
    top: -100px;
    right: -100px;
    width: 500px;
    height: 500px;
    background: rgba(59, 130, 246, 0.3);
}

.blob-2 {
    bottom: -100px;
    left: -100px;
    width: 600px;
    height: 600px;
    background: rgba(139, 92, 246, 0.2);
    animation-delay: 2s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(30px, 50px) scale(1.1); }
}

/* Sections */
.section {
    padding: 100px 0;
}

.bg-light {
    background-color: var(--bg-light);
}

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

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

.section-header p {
    font-size: 1.125rem;
    color: var(--text-muted);
}

/* About Grid */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.about-card {
    background: var(--bg-surface);
    padding: 40px;
    border-radius: 24px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    border: 1px solid var(--border);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.about-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 24px;
    display: inline-block;
    padding: 16px;
    background: var(--bg-light);
    border-radius: 16px;
}

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.about-card p {
    color: var(--text-muted);
}

/* Pipeline Architecture */
.pipeline {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 800px;
    margin: 0 auto;
}

.pipeline-step {
    background: var(--bg-surface);
    width: 100%;
    padding: 32px;
    border-radius: 20px;
    display: flex;
    align-items: flex-start;
    gap: 24px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border);
    position: relative;
}

.step-number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.step-content p {
    color: var(--text-muted);
}

.pipeline-connector {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    width: 100%;
}

.connector-line {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary) 0%, transparent 50%, var(--primary) 100%);
    opacity: 0.5;
}

.connector-label {
    background: var(--bg-surface);
    padding: 6px 16px;
    border-radius: 99px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary);
    border: 1px solid var(--border);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    z-index: 2;
}

/* Usage API */
.api-demo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    background: var(--bg-surface);
    padding: 48px;
    border-radius: 24px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border);
}

.api-info h3 {
    font-size: 1.75rem;
    margin-bottom: 16px;
}

.api-info p {
    color: var(--text-muted);
    margin-bottom: 24px;
}

.endpoint {
    display: inline-flex;
    align-items: center;
    background: var(--bg-main);
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid var(--border);
    font-family: monospace;
    font-size: 1rem;
}

.method {
    color: var(--primary);
    font-weight: 700;
    margin-right: 12px;
}

.code-block {
    background: #0F172A;
    border-radius: 16px;
    overflow: hidden;
    position: relative;
}

.code-header {
    background: #1E293B;
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #94A3B8;
    font-size: 0.875rem;
    font-family: 'Inter', sans-serif;
}

.copy-btn {
    background: transparent;
    color: #94A3B8;
    border: 1px solid #334155;
    padding: 4px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.75rem;
    transition: all 0.2s;
}

.copy-btn:hover {
    color: white;
    border-color: #475569;
}

.code-block pre {
    padding: 24px;
    overflow-x: auto;
    color: #E2E8F0;
    font-family: monospace;
    font-size: 0.875rem;
    line-height: 1.5;
}

/* Footer */
footer {
    background: var(--bg-surface);
    border-top: 1px solid var(--border);
    padding: 40px 0;
}

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

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

/* Responsive */
@media (max-width: 768px) {
    .hero-title { font-size: 2.5rem; }
    .api-demo { grid-template-columns: 1fr; }
    .hero-actions { flex-direction: column; }
    .nav-links { display: none; }
    .footer-content { flex-direction: column; gap: 20px; text-align: center; }
}