/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background: white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border-radius: 20px;
    margin-top: 20px;
    margin-bottom: 20px;
}

/* Header styles */
.header {
    text-align: center;
    padding: 40px 0;
    border-bottom: 2px solid #f0f0f0;
    margin-bottom: 40px;
}

.app-icon {
    margin-bottom: 20px;
}

.app-icon img {
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.header h1 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 10px;
    font-weight: 700;
}

.subtitle {
    font-size: 1.2rem;
    color: #7f8c8d;
    font-weight: 300;
}

/* Main content styles */
.main-content {
    padding: 0 20px;
}

.section {
    margin-bottom: 40px;
    padding: 30px;
    background: #f8f9fa;
    border-radius: 12px;
    border-left: 4px solid #667eea;
}

.section h2 {
    font-size: 1.8rem;
    color: #2c3e50;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section p {
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 15px;
}

/* Lists styles */
.features-list,
.tips-list {
    list-style: none;
    padding: 0;
}

.features-list li,
.tips-list li {
    padding: 12px 0;
    border-bottom: 1px solid #e9ecef;
    font-size: 1.1rem;
    color: #555;
    position: relative;
    padding-left: 30px;
}

.features-list li:before,
.tips-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: bold;
    font-size: 1.2rem;
}

.features-list li:last-child,
.tips-list li:last-child {
    border-bottom: none;
}

/* FAQ styles */
.faq-item {
    margin-bottom: 25px;
    padding: 20px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.faq-item h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 10px;
    cursor: pointer;
    transition: color 0.3s ease;
}

.faq-item h3:hover {
    color: #667eea;
}

.faq-item p {
    margin: 0;
    color: #666;
}

/* Contact section styles */
.contact-section {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border-left: 4px solid #fff;
}

.contact-section h2 {
    color: white;
}

.contact-section p {
    color: rgba(255, 255, 255, 0.9);
}

.contact-info {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 8px;
    margin: 20px 0;
}

.contact-info p {
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.contact-info a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
    transition: border-color 0.3s ease;
}

.contact-info a:hover {
    border-color: #fff;
}

/* Footer styles */
.footer {
    text-align: center;
    padding: 30px 0;
    border-top: 2px solid #f0f0f0;
    margin-top: 40px;
    color: #7f8c8d;
}

.footer p {
    margin-bottom: 5px;
    font-size: 0.95rem;
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        margin: 10px;
        padding: 15px;
        border-radius: 15px;
    }
    
    .header {
        padding: 30px 0;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .section {
        padding: 20px;
        margin-bottom: 25px;
    }
    
    .section h2 {
        font-size: 1.5rem;
    }
    
    .main-content {
        padding: 0 10px;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.8rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .section {
        padding: 15px;
    }
    
    .features-list li,
    .tips-list li {
        font-size: 1rem;
        padding: 10px 0 10px 25px;
    }
}