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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #2d3748;
    background-color: #ffffff;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: #4a5568;
}

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

.nav-link {
    text-decoration: none;
    color: #4a5568;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #667eea;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    color: #2d3748;
}

.gradient-text {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: #4a5568;
    margin-bottom: 40px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
    padding: 16px 32px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
}

.btn-secondary {
    background: white;
    color: #667eea;
    border: 2px solid #667eea;
}

.btn-secondary:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
}

/* Hero Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.video-container {
    width: 50%;
    max-width: 450px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    position: relative;
}

.demo-video {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 20px;
}

/* Features Section */
.features {
    padding: 100px 0;
    background: white;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: #2d3748;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: white;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: #2d3748;
}

.feature-description {
    color: #4a5568;
    line-height: 1.6;
}

/* Demo Section */
.demo {
    padding: 100px 0;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
}

.demo-container {
    max-width: 800px;
    margin: 0 auto;
}

.video-placeholder {
    background: white;
    border-radius: 20px;
    padding: 80px 40px;
    text-align: center;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    border: 2px dashed #cbd5e0;
    transition: all 0.3s ease;
}

.video-placeholder:hover {
    border-color: #667eea;
    transform: translateY(-2px);
}

.video-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: white;
}

.video-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 8px;
}

.video-subtext {
    color: #4a5568;
    font-size: 1.1rem;
}

/* About Section */
.about {
    padding: 100px 0;
    background: white;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #4a5568;
}

.about-text p {
    margin-bottom: 24px;
}

.about-text p:last-child {
    margin-bottom: 0;
}

/* Footer */
.footer {
    background: #2d3748;
    color: white;
    padding: 60px 0;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-logo .logo-text {
    color: white;
    font-size: 24px;
    font-weight: 700;
}

.footer-text {
    color: #a0aec0;
    font-size: 1.1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .video-container {
        max-width: 300px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .video-placeholder {
        padding: 60px 20px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .btn-primary, .btn-secondary {
        padding: 14px 24px;
        font-size: 14px;
    }
    
    .video-container {
        max-width: 225px;
    }
    
    .feature-card {
        padding: 30px 20px;
    }
}

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

/* Loading animation for buttons */
.btn-primary:active, .btn-secondary:active {
    transform: translateY(0);
}

/* Focus states for accessibility */
.btn-primary:focus, .btn-secondary:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

.nav-link:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
    border-radius: 4px;
}