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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    padding: 100px 20px;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.app-name {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -2px;
}

.tagline {
    font-size: 1.8rem;
    margin-bottom: 30px;
    opacity: 0.95;
    font-weight: 300;
}

.description {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 40px;
    opacity: 0.9;
    line-height: 1.8;
}

.cta-button {
    display: inline-block;
    background: white;
    color: #667eea;
    padding: 16px 48px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.cta-button.disabled {
    opacity: 0.8;
    cursor: default;
}

.cta-button.disabled:hover {
    transform: none;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* Screenshot Section */
.screenshot {
    background: #f8f9fa;
    padding: 80px 20px;
    text-align: center;
}

.screenshot-placeholder {
    display: inline-block;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    border-radius: 40px;
    background: #1a1a1a;
    padding: 12px;
    border: 3px solid #1a1a1a;
}

.screenshot-placeholder svg {
    display: block;
}

.screenshot-placeholder img {
    max-width: 100%;
    max-height: 600px;
    height: auto;
    display: block;
    border-radius: 28px;
}

/* Features Section */
.features {
    padding: 100px 20px;
    background: white;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #2d3748;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.feature {
    text-align: center;
    padding: 30px 20px;
}

.feature-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.feature h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #2d3748;
}

.feature p {
    color: #718096;
    line-height: 1.7;
    font-size: 1rem;
}

/* Footer */
footer {
    background: #2d3748;
    color: white;
    text-align: center;
    padding: 40px 20px;
}

footer p {
    margin: 10px 0;
}

.footer-links {
    margin: 15px 0;
}

.footer-links a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.footer-links a:hover {
    opacity: 1;
    text-decoration: underline;
}

.footer-tagline {
    opacity: 0.7;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .app-name {
        font-size: 2.5rem;
    }

    .tagline {
        font-size: 1.3rem;
    }

    .description {
        font-size: 1rem;
    }

    .hero {
        padding: 60px 20px;
        min-height: 70vh;
    }

    .features h2 {
        font-size: 2rem;
    }

    .features-grid {
        gap: 30px;
    }

    .screenshot-placeholder svg {
        width: 250px;
        height: 500px;
    }
}

@media (max-width: 480px) {
    .app-name {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1.1rem;
    }

    .cta-button {
        padding: 14px 36px;
        font-size: 1rem;
    }

    .screenshot-placeholder svg {
        width: 200px;
        height: 400px;
    }
}