:root {
    --primary-color: #0056b3;
    --secondary-color: #f8f9fa;
    --text-color: #333;
    --border-color: #ddd;
    --accent-color: #28a745;
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

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

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
}

header {
    background-color: var(--primary-color);
    color: #fff;
    padding: 1rem 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
    color: #fff;
}

.nav-links a {
    color: #fff;
    text-decoration: none;
    margin-left: 20px;
    font-weight: 500;
}

.hero {
    background-color: var(--secondary-color);
    padding: 4rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: #666;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.calculator-card {
    background: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    max-width: 500px;
    margin: 0 auto;
    text-align: left;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-group input, .form-group select {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: #fff;
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    width: 100%;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #004494;
}

.result-box {
    margin-top: 1.5rem;
    padding: 1rem;
    background-color: #e9ecef;
    border-radius: 4px;
    text-align: center;
    display: none; /* Hidden by default */
}

.result-box.show {
    display: block;
}

.result-amount {
    font-size: 2rem;
    color: var(--accent-color);
    font-weight: bold;
}

.content-section {
    padding: 4rem 0;
}

.content-section h2 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.city-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 2rem;
}

.city-card {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
    color: inherit;
    display: block;
}

.city-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    border-color: var(--primary-color);
}

.city-card h3 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

footer {
    background-color: #333;
    color: #fff;
    padding: 2rem 0;
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    margin-right: 15px;
}

.footer-links a:hover {
    color: #fff;
}

.disclaimer {
    font-size: 0.8rem;
    color: #999;
    margin-top: 2rem;
    text-align: center;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        margin-top: 1rem;
    }
}