:root {
    /* Light Theme Colors */
    --background-color-light: #f4f4f4;
    --text-color-light: #333;
    --header-background-light: #e0e0e0;
    --footer-background-light: #d0d0d0;
    --button-background-light: #5cb85c;
    --button-text-light: white;
    --image-border-light: #ccc;
}

body.dark-theme {
    /* Dark Theme Colors */
    --background-color-dark: #222;
    --text-color-dark: #e0e0e0;
    --header-background-dark: #333;
    --footer-background-dark: #444;
    --button-background-dark: #4CAF50; /* A pleasant green for the toggle */
    --button-text-dark: white;
    --image-border-dark: #555;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    transition: background-color 0.3s ease, color 0.3s ease;

    /* Default to light theme */
    background-color: var(--background-color-light);
    color: var(--text-color-light);
}

body.dark-theme {
    background-color: var(--background-color-dark);
    color: var(--text-color-dark);
}

header {
    background-color: var(--header-background-light);
    color: var(--text-color-light);
    padding: 1rem 0;
    text-align: center;
    border-bottom: 1px solid var(--image-border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

body.dark-theme header {
    background-color: var(--header-background-dark);
    color: var(--text-color-dark);
    border-bottom: 1px solid var(--image-border-dark);
}

header h1 {
    margin: 0;
}

#theme-toggle {
    background-color: var(--button-background-light);
    color: var(--button-text-light);
    border: none;
    padding: 0.5rem 1rem;
    cursor: pointer;
    border-radius: 5px;
    font-size: 1rem;
    transition: background-color 0.3s ease;
}

body.dark-theme #theme-toggle {
    background-color: var(--button-background-dark);
    color: var(--button-text-dark);
}

#theme-toggle:hover {
    opacity: 0.9;
}

main {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

.story-content p {
    margin-bottom: 1rem;
    text-align: justify;
}

.story-content img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 1.5rem auto;
    border: 1px solid var(--image-border-light);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

body.dark-theme .story-content img {
    border: 1px solid var(--image-border-dark);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

footer {
    background-color: var(--footer-background-light);
    color: var(--text-color-light);
    text-align: center;
    padding: 1rem 0;
    margin-top: 2rem;
    border-top: 1px solid var(--image-border-light);
}

body.dark-theme footer {
    background-color: var(--footer-background-dark);
    color: var(--text-color-dark);
    border-top: 1px solid var(--image-border-dark);
}