:root {
    --bg-color: #f0f0f0;
    --container-bg: #fff;
    --text-color: #333;
    --border-color: #ccc;
    --button-bg: #007bff;
    --button-hover-bg: #0056b3;
    --button-text: white;
    --input-border: #ccc;
    --input-focus-border: #007bff;
    --input-placeholder: #666;
    --image-border: #eee;
    --image-loading-bg: #f9f9f9;
    --image-loading-border: #ccc;
    --restart-button-bg: #6c757d;
    --restart-button-hover-bg: #5a6268;
}

body {
    font-family: sans-serif;
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.5s ease, color 0.5s ease;
}

#game-container {
    background-color: var(--container-bg);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    max-width: 700px;
    width: 100%;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 20px;
    position: relative;
}

#dark-mode-toggle {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 8px 12px;
    font-size: 0.8rem;
    background-color: var(--button-bg);
    color: var(--button-text);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease, color 0.3s ease;
}

#dark-mode-toggle:hover {
    background-color: var(--button-hover-bg);
}

#story-text {
    line-height: 1.6;
    text-align: left;
    margin-bottom: 0;
    color: var(--text-color);
}

#image-container {
    width: 100%;
    margin-bottom: 10px;
}

#story-image {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    border: 1px solid var(--image-border);
    display: block;
    margin: 0 auto;
    background-color: var(--image-loading-bg);
}

#story-image.loading {
    border: 2px dashed var(--image-loading-border);
    min-height: 150px;
    background-color: var(--image-loading-bg);
}

#input-area {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

#user-input {
    flex-grow: 1;
    padding: 12px;
    font-size: 1rem;
    border: 1px solid var(--input-border);
    border-radius: 5px;
    box-sizing: border-box;
    background-color: var(--container-bg);
    color: var(--text-color);
    transition: border-color 0.3s ease, background-color 0.3s ease, color 0.3s ease;
}

#user-input::placeholder {
    color: var(--input-placeholder);
    opacity: 1;
}

#user-input:focus {
    outline: none;
    border-color: var(--input-focus-border);
    box-shadow: 0 0 0 0.2rem rgba(var(--input-focus-border-rgb, 0, 123, 255), 0.25);
}

:root {
    --input-focus-border-rgb: 0, 123, 255;
}

body.dark-mode {
    --bg-color: #121212;
    --container-bg: #1e1e1e;
    --text-color: #e0e0e0;
    --border-color: #555;
    --button-bg: #bb86fc;
    --button-hover-bg: #9a70d8;
    --button-text: #121212;
    --input-border: #555;
    --input-focus-border: #bb86fc;
    --input-placeholder: #a0a0a0;
    --image-border: #333;
    --image-loading-bg: #2a2a2a;
    --image-loading-border: #555;
    --restart-button-bg: #424242;
    --restart-button-hover-bg: #303030;
    --restart-button-text: #e0e0e0;
}

body.dark-mode #user-input {
    background-color: var(--container-bg);
    color: var(--text-color);
}

body.dark-mode #user-input:focus {
    border-color: #bb86fc;
    box-shadow: 0 0 0 0.2rem rgba(187, 134, 252, 0.25);
}

button {
    padding: 12px 20px;
    font-size: 1rem;
    cursor: pointer;
    background-color: var(--button-bg);
    color: var(--button-text);
    border: none;
    border-radius: 5px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

button:hover:not(:disabled) {
    background-color: var(--button-hover-bg);
}

button:disabled {
    background-color: #cccccc;
    color: #666666;
    cursor: not-allowed;
    opacity: 0.6;
}

#restart-button {
    margin-top: 15px;
    background-color: var(--restart-button-bg);
    color: var(--restart-button-text, white);
}

#restart-button:hover:not(:disabled) {
    background-color: var(--restart-button-hover-bg);
}

#options-container {
    display: none;
}