:root {
    --background-color: #f0f4c3; /* Light mode background */
    --text-color: #333; /* Light mode text color */
    --primary-color: #3f51b5; /* Deep Purple */
    --secondary-color: #7300ff; /* Pink */
    --container-background: white; /* Light mode container background */
    --container-border: #e0e0e0; /* Light mode container border */
}

[data-theme='dark'] {
    --background-color: #121212; /* Dark mode background */
    --text-color: #e0e0e0; /* Dark mode text color */
    --primary-color: #9246ee; /* Dark Purple */
    --secondary-color: #d42f8d; /* Light Pink */
    --container-background: #1e1e1e; /* Dark mode container background */
    --container-border: #333; /* Dark mode container border */
}

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, var(--background-color), #81d4fa);
    margin: 0;
    padding: 0;
    color: var(--text-color);
}

.container {
    max-width: 800px;
    margin: 100px auto;
    padding: 40px;
    background: var(--container-background);
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
    border: 1px solid var(--container-border);
}

h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.subtitle {
    font-size: 1.2em;
    color: #777;
    margin-bottom: 30px;
}

.btn {
    padding: 12px 25px;
    margin: 0 10px;
    border: none;
    border-radius: 5px;
    font-size: 1em;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.btn:hover {
    transform: translateY(-2px);
}

.explore-container {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}

.explore-column {
    flex: 1;
    padding: 20px;
    text-align: left;
}

.separator {
    width: 2px;
    background-color: #e0e0e0;
    margin: 0 10px;
}

.navigation {
    list-style-type: none;
    padding: 0;
    margin-top: 20px;
}

.navigation li {
    margin: 15px 0;
}

.navigation a {
    text-decoration: none;
    color: var(--primary-color);
    font-weight: bold;
    transition: color 0.3s;
}

.navigation a:hover {
    color: var(--secondary-color);
}

@media (max-width: 600px) {
    .container {
        padding: 20px;
    }

    h1 {
        font-size: 2em;
    }

    .btn {
        width: 100%;
        margin: 10px 0;
    }

    .explore-container {
        flex-direction: column;
    }

    .separator {
        display: none; /* Hide separator on small screens */
    }
}