@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&display=swap');

:root {
    --primary-color: #1a73e8;
    --background-color: #121212;
    --surface-color: #1e1e1e;
    --text-color: #e0e0e0;
    --header-color: #1e1e1e;
    --footer-color: #1e1e1e;
    --border-color: #333;
    --input-bg-color: #2c2c2c;
    --button-hover-color: #155ab6;
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background-color: var(--header-color);
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

header h1 {
    margin: 0;
    font-size: 1.8rem;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 1.1rem;
    transition: color 0.3s ease;
    text-decoration: non;
}

nav ul li a:hover {
    color: var(--primary-color);
}

main {
    flex: 1;
    max-width: 800px;
    width: 100%;
    margin: 2rem auto;
    padding: 0 2rem;
    box-sizing: border-box;
}

footer {
    background-color: var(--footer-color);
    color: #aaa;
    text-align: center;
    padding: 1rem;
    border-top: 1px solid var(--border-color);
}

h2 {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}

.content-wrapper {
    background-color: var(--surface-color);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

form {
    margin-bottom: 2rem;
}

form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

form input[type="text"],
form input[type="number"] {
    width: 100%;
    padding: 0.8rem;
    margin-bottom: 1.5rem;
    border: 1px solid #444;
    background-color: var(--input-bg-color);
    color: var(--text-color);
    border-radius: 4px;
    box-sizing: border-box;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

form input[type="text"]:focus,
form input[type="number"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.3);
}

form button {
    background-color: var(--primary-color);
    color: white;
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1.1rem;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

form button:hover {
    background-color: var(--button-hover-color);
    transform: translateY(-2px);
}

.essay-content,
.story-content,
.image-content {
    background-color: var(--background-color);
    padding: 2rem;
    border-radius: 8px;
    margin-top: 2rem;
    white-space: pre-wrap; /* Preserve formatting */
    border: 1px solid var(--border-color);
}

.essay-content h3,
.story-content h3,
.image-content h3 {
    margin-top: 0;
    color: var(--primary-color);
}

.image-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin-top: 1rem;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.image-content img:hover {
    opacity: 0.8;
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: flex-start;
    }

    nav ul {
        margin-top: 1rem;
    }

    nav ul li {
        margin-left: 0;
        margin-right: 15px;
    }

    main {
        padding: 0 1rem;
    }
}

.chat-history {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
    background-color: var(--surface-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.chat-message {
    max-width: 75%;
    padding: 1rem;
    border-radius: 12px;
    line-height: 1.5;
    white-space: pre-wrap;
    word-wrap: break-word;
    font-size: 1rem;
}

.chat-message.user {
    background-color: #263238;
    color: #ffffff;
    align-self: flex-end;
    border: 1px solid #37474f;
}

.chat-message.bot {
    background-color: #1b1f22;
    color: #e0e0e0;
    align-self: flex-start;
    border: 1px solid #333333;
}