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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #f8fafc;
    --accent-color: #10b981;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --border-color: #e5e7eb;
    --background-light: #f9fafb;
    --white: #ffffff;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Navigation */
.navbar {
    background: var(--white);
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    backdrop-filter: blur(8px);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4rem;
}

.nav-brand h2 {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.5rem;
}

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

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.2s ease;
}

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

.cta-button {
    background: var(--primary-color);
    color: var(--white) !important;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: background-color 0.2s ease;
}

.cta-button:hover {
    background: var(--primary-dark);
}

/* Hero Section */
.hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, var(--background-light) 0%, var(--white) 100%);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

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

.btn-primary, .btn-secondary, .btn-outline {
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--white);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--background-light);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

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

/* Dashboard Preview */
.dashboard-preview {
    background: var(--white);
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.dashboard-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.avatar {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background: var(--background-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.stats {
    display: flex;
    gap: 2rem;
}

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

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-light);
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
}

.dashboard-widgets {
    padding: 1.5rem;
    display: grid;
    gap: 1rem;
}

.widget {
    background: var(--background-light);
    padding: 1rem;
    border-radius: 0.5rem;
}

.widget h4 {
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.goal-progress {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.progress-bar {
    height: 0.5rem;
    background: var(--border-color);
    border-radius: 0.25rem;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent-color);
    border-radius: 0.25rem;
    transition: width 0.3s ease;
}

.task-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.task-item {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Features Section */
.features {
    padding: 6rem 0;
    background: var(--white);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

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

.feature-card {
    background: var(--background-light);
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    transition: transform 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
}

.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 ul {
    list-style: none;
    text-align: left;
}

.feature-card li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1rem;
}

.feature-card li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

/* Use Cases Section */
.use-cases {
    padding: 6rem 0;
    background: var(--background-light);
}

.use-cases h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.use-case-group h3 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--text-primary);
    text-align: center;
}

.use-case-cards {
    display: grid;
    gap: 1.5rem;
}

.use-case-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    transition: transform 0.2s ease;
}

.use-case-card:hover {
    transform: translateY(-2px);
}

.use-case-card h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.use-case-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Differentiators Section */
.differentiators {
    padding: 6rem 0;
    background: var(--white);
}

.differentiators h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.differentiators-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.differentiator {
    text-align: center;
    padding: 2rem;
}

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

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

/* Technical Section */
.technical {
    padding: 6rem 0;
    background: var(--background-light);
}

.technical h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

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

.tech-category {
    background: var(--white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
}

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

.tech-category ul {
    list-style: none;
}

.tech-category li {
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1rem;
}

.tech-category li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.tech-category strong {
    color: var(--text-primary);
}

/* Get Started Section */
.get-started {
    padding: 6rem 0;
    background: var(--primary-color);
    color: var(--white);
}

.get-started h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.get-started-content > p {
    text-align: center;
    font-size: 1.25rem;
    margin-bottom: 3rem;
    opacity: 0.9;
}

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

.option {
    background: var(--white);
    color: var(--text-primary);
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    transition: transform 0.2s ease;
}

.option:hover {
    transform: translateY(-4px);
}

.option h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.option p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

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

.option .btn-secondary {
    background: var(--background-light);
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: var(--white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-brand p {
    opacity: 0.8;
    font-style: italic;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.link-group h4 {
    margin-bottom: 1rem;
    font-weight: 600;
}

.link-group a {
    display: block;
    color: var(--white);
    text-decoration: none;
    opacity: 0.8;
    margin-bottom: 0.5rem;
    transition: opacity 0.2s ease;
}

.link-group a:hover {
    opacity: 1;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        gap: 1rem;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 2.25rem;
    }
    
    .hero-actions {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .features h2, .use-cases h2, .differentiators h2, .technical h2 {
        font-size: 2rem;
    }
    
    .use-cases-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .nav-container {
        padding: 0 1rem;
    }
    
    .hero {
        padding: 6rem 0 3rem;
    }
    
    .hero-content h1 {
        font-size: 1.875rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .features, .use-cases, .differentiators, .technical, .get-started {
        padding: 4rem 0;
    }
    
    .dashboard-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .stats {
        justify-content: center;
    }
}

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

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

.feature-card, .use-case-card, .differentiator, .tech-category {
    animation: fadeInUp 0.6s ease-out;
}