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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: #333;
}

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

/* Header */
header {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo h1 {
    font-size: 28px;
    color: #4CAF50;
}

nav a {
    margin-left: 30px;
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover {
    color: #4CAF50;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
    color: white;
    padding: 100px 0;
    text-align: center;
}

.hero h2 {
    font-size: 48px;
    margin-bottom: 20px;
    line-height: 1.3;
}

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.95;
}

.btn-primary {
    display: inline-block;
    background: white;
    color: #4CAF50;
    padding: 15px 40px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    font-size: 18px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

/* Features Section */
.features {
    padding: 80px 0;
    background: #f9f9f9;
}

.features h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: #333;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.feature-card .icon {
    font-size: 60px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #4CAF50;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* Screenshots Section */
.screenshots {
    padding: 80px 0;
    background: white;
}

.screenshots h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 10px;
    color: #333;
}

.screenshots .subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 50px;
    font-size: 18px;
}

.screenshot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.screenshot-placeholder {
    background: linear-gradient(135deg, #e0f7fa 0%, #b2ebf2 100%);
    border-radius: 20px;
    padding: 80px 20px;
    text-align: center;
    font-size: 18px;
    color: #555;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

/* Download Section */
.download {
    padding: 80px 0;
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
    color: white;
    text-align: center;
}

.download h2 {
    font-size: 36px;
    margin-bottom: 15px;
}

.download p {
    font-size: 18px;
    margin-bottom: 30px;
}

.btn-download {
    display: inline-block;
    margin: 20px 0;
    transition: transform 0.3s;
}

.btn-download:hover {
    transform: scale(1.05);
}

.coming-soon {
    margin-top: 20px;
    font-size: 16px;
    opacity: 0.9;
}

/* Footer */
footer {
    background: #333;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #4CAF50;
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #4CAF50;
}

.footer-section p {
    line-height: 1.8;
    color: #ccc;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

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

.footer-section ul li a:hover {
    color: #4CAF50;
}

.footer-bottom {
    border-top: 1px solid #555;
    padding-top: 20px;
    text-align: center;
    color: #999;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h2 {
        font-size: 32px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    nav a {
        margin-left: 15px;
        font-size: 14px;
    }
    
    .feature-grid,
    .screenshot-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}