body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f5f5f5;
}

nav {
    background: #333;
    padding: 10px 20px;
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

nav a {
    color: white;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 4px;
    transition: background 0.2s;
    cursor: pointer;
}

nav a:hover {
    background: #555;
}

nav a.active {
    background: #4CAF50;
}

#content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.page-container {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

h1 {
    color: #333;
    margin-top: 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.feature-card {
    background: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    border: 1px solid #eee;
}

.cta-button {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 12px 24px;
    font-size: 16px;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 20px;
}

.cta-button:hover {
    background: #45a049;
}

.controls {
    background: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
    margin: 20px 0;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.control-group {
    flex: 1;
    min-width: 200px;
}

.control-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: #555;
}

.control-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    background: white;
}

.chart-container {
    margin-top: 20px;
    background: white;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #eee;
}

.faq-item {
    margin: 20px 0;
    padding: 15px;
    background: #f9f9f9;
    border-radius: 8px;
}

#contact-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    max-width: 500px;
    margin: 20px 0;
}

#contact-form input,
#contact-form textarea {
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

#contact-form button {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 12px;
    cursor: pointer;
    border-radius: 4px;
    font-size: 16px;
}

.contact-note {
    margin-top: 20px;
    color: #666;
}

.blog-teaser {
    background: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    margin: 30px 0;
}

.loader {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #4CAF50;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 50px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}