app.py

import streamlit as st
from google.generativeai import GenerativeModel, configure
import random # Added for random character selection

st.set_page_config(
    page_title="Character AI",  # or any title you love~
    page_icon="🎭",  # this sets the favicon / tab icon
    layout="centered"  # you can also choose "wide" or "centered"
)

# --- Custom Dark Theme CSS ---
st.markdown("""
<style>
    /* General Body and Text */
    body {
        color: #E0E0E0; /* Light grey text */
        background-color: #121212; /* Very dark background */
    }
    .stApp {
        background-color: #121212; /* Ensure app background is also dark */
    }

    /* Titles */
    h1, h2, h3, h4, h5, h6 {
        color: #00796B; /* Much Darker Teal for titles */
    }
    h1 { text-align: center; }

    /* Sidebar */
    [data-testid="stSidebar"] {
        background-color: #1E1E1E; /* Dark grey for sidebar */
        border-right: 1px solid #383838; /* Slightly darker border for sidebar */
    }
    [data-testid="stSidebar"] .stRadio > label span, /* Radio button labels */
    [data-testid="stSidebar"] .stButton > button,
    [data-testid="stSidebar"] .stSelectbox > label,
    [data-testid="stSidebar"] [data-testid="stMultiSelect"] label,
    [data-testid="stSidebar"] .stSlider > label,
    [data-testid="stSidebar"] [data-testid="stNumberInput"] label,
    [data-testid="stSidebar"] .stTextInput > label,
    [data-testid="stSidebar"] .stTextArea > label,
    [data-testid="stSidebar"] .stDownloadButton > button,
    [data-testid="stSidebar"] p,
    [data-testid="stSidebar"] small,
    [data-testid="stSidebar"] li,
    [data-testid="stSidebar"] summary /* Expander header */ {
        color: #C0C0C0 !important; /* Slightly softer grey for sidebar text for less harshness */
    }
    [data-testid="stSidebar"] .stButton > button {
        background-color: #333333; color: #00796B; border: 1px solid #00796B; /* Much Darker Teal */
        border-radius: 5px;
    }
    [data-testid="stSidebar"] .stButton > button:hover {
        background-color: #00796B; color: #FFFFFF; /* Much Darker Teal background on hover */
    }
    [data-testid="stSidebar"] .stDownloadButton > button {
        background-color: #03DAC6; color: #121212; border: none;
    }
    [data-testid="stSidebar"] .stDownloadButton > button:hover {
        background-color: #018786; color: #E0E0E0;
    }

    /* Chat Messages */
    [data-testid="stChatMessage"] {
        background-color: #2A2A2A; border-radius: 10px; border: 1px solid #404040;
        box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    }

    /* Chat Input */
    [data-testid="stChatInput"] textarea {
        background-color: #252525;
        color: #E0E0E0;
        border: 1px solid #4A4A4A;
        border-radius: 8px;
    }
    [data-testid="stChatInput"] button {
        background-color: #00796B; /* Much Darker Teal */
        color: #121212;
        border: none;
        border-radius: 8px;
    }
    [data-testid="stChatInput"] button:hover {
        background-color: #004D40; /* Even Darker Teal for hover */
        color: #E0E0E0; /* Light grey text for contrast */
    }

    /* --- Additional Dark Theme Decorations --- */

    /* General Input Fields (Text, Number, Date, Time) */
    [data-testid="stTextInput"] input,
    [data-testid="stNumberInput"] input,
    [data-testid="stDateInput"] input,
    [data-testid="stTimeInput"] input,
    [data-testid="stTextArea"] textarea {
        background-color: #2C2C2C;
        color: #E0E0E0;
        border: 1px solid #4A4A4A;
        border-radius: 6px;
        padding: 10px;
    }
    [data-testid="stTextInput"] input:focus,
    [data-testid="stNumberInput"] input:focus,
    [data-testid="stDateInput"] input:focus,
    [data-testid="stTimeInput"] input:focus,
    [data-testid="stTextArea"] textarea:focus {
        border-color: #00796B; /* Much Darker Teal */
        box-shadow: 0 0 0 0.2rem rgba(0, 121, 107, 0.25); /* Much Darker Teal shadow */
    }

    /* Selectbox & Multiselect */
    [data-testid="stSelectbox"] div[data-baseweb="select"] > div,
    [data-testid="stMultiSelect"] div[data-baseweb="select"] > div {
        background-color: #2C2C2C;
        color: #E0E0E0;
        border: 1px solid #4A4A4A;
        border-radius: 6px;
    }
    [data-testid="stSelectbox"] div[data-baseweb="select"] input,
    [data-testid="stMultiSelect"] div[data-baseweb="select"] input {
        color: #E0E0E0 !important; /* Input text color within select */
    }
    /* Dropdown menu for selectbox/multiselect */
    div[data-baseweb="popover"] ul[role="listbox"] {
        background-color: #2C2C2C;
        border: 1px solid #4A4A4A;
    }
    div[data-baseweb="popover"] ul[role="listbox"] li {
        color: #E0E0E0;
    }
    div[data-baseweb="popover"] ul[role="listbox"] li:hover {
        background-color: #3A3A3A;
    }
    div[data-baseweb="popover"] ul[role="listbox"] li[aria-selected="true"] {
        background-color: #00796B; /* Much Darker Teal */
        color: #121212;
    }

    /* Slider */
    [data-testid="stSlider"] div[data-baseweb="slider"] > div:nth-child(2) { /* Track fill */
        background-color: #00796B; /* Much Darker Teal */
    }
    [data-testid="stSlider"] div[data-baseweb="slider"] > div:nth-child(1) { /* Track background */
        background-color: #3A3A3A;
    }
    [data-testid="stSlider"] div[role="slider"] { /* Thumb */
        border: 2px solid #00796B; /* Much Darker Teal */
        background-color: #E0E0E0;
        box-shadow: 0 0 5px rgba(0, 121, 107, 0.5); /* Much Darker Teal shadow */
    }

    /* Expander */
    [data-testid="stExpander"] summary {
        background-color: #252525;
        color: #00796B; /* Much Darker Teal */
        border: 1px solid #383838;
        border-radius: 6px 6px 0 0;
        padding: 0.5rem 1rem;
    }
    [data-testid="stExpander"] summary:hover {
        background-color: #303030;
    }
    [data-testid="stExpander"] div[role="region"] {
        background-color: #1E1E1E;
        border: 1px solid #383838;
        border-top: none;
        border-radius: 0 0 6px 6px;
        padding: 1rem;
    }

    /* Alerts (Info, Success, Warning, Error) */
    div[data-baseweb="alert"] {
        background-color: #2C2C2C;
        color: #E0E0E0;
        border-left: 5px solid;
        border-radius: 6px;
        padding: 1rem;
    }
    div[data-baseweb="alert"][role="alert"] > div:first-child { /* Icon container */
        color: #E0E0E0;
    }
    /* Specific alert types */
    .stAlert[data-stale="false"] > div[data-baseweb="alert"][role="status"] { border-left-color: #64B5F6; } /* Info - Muted Blue */
    .stAlert[data-stale="false"] > div[data-baseweb="alert"][role="alert"] { border-left-color: #CF6679; } /* Error - Muted Red */
    .stAlert[data-stale="false"] > div[data-baseweb="alert"][role="status"].st-emotion-cache-1wmy9hl { border-left-color: #FFB74D; } /* Warning - Muted Orange */
    .stAlert[data-stale="false"] > div[data-baseweb="alert"][role="status"].st-emotion-cache-j6qv4b { border-left-color: #03DAC6; } /* Success - Teal */

    /* Progress Bar */
    [data-testid="stProgressBar"] > div > div {
        background-color: #00796B; /* Much Darker Teal for Progress bar fill */
    }
    [data-testid="stProgressBar"] {
        background-color: #3A3A3A; /* Progress bar background */
    }

</style>
""", unsafe_allow_html=True)

# 🛡️ Sidebar - API Key Configuration
st.sidebar.title("🔑 API Key")
api_key_input = st.sidebar.text_input("Enter your Gemini API Key:", type="password")
api_key_configured = False

if api_key_input:
    try:
        configure(api_key=api_key_input)
        st.sidebar.success("API Key Configured!")
        api_key_configured = True
    except Exception as e:
        st.sidebar.error(f"API Key Configuration Error: {e}")
        st.stop()
else:
    st.info("Please enter your Gemini API Key in the sidebar to begin.")
    st.stop()

# Initialize session state variables for new features
if "selected_character_index" not in st.session_state:
    st.session_state.selected_character_index = 0
if "text_to_copy" not in st.session_state:
    st.session_state.text_to_copy = ""


# --- Model and Generation Configuration ---
st.sidebar.title("⚙️ Model Configuration")
available_models = ["gemini-1.5-flash", "gemini-2.0-flash"] # Add more models if available/needed
default_model_name = "gemini-2.0-flash"
selected_model = st.sidebar.selectbox(
    "Select Model:",
    available_models,
    index=available_models.index(default_model_name) if default_model_name in available_models else 0
)
temperature = st.sidebar.slider("Temperature:", min_value=0.0, max_value=1.0, value=0.7, step=0.05)
max_tokens = st.sidebar.slider("Max Output Tokens:", min_value=50, max_value=2048, value=300, step=10)

# --- Character Data ---
original_character_names = ["Luna 🌙", "Riku ⚔️", "Ivy 🍃", "Kai 🌊", "Nyra 🔥", "Professor Whiskers 🧐", "Captain Starblazer 🚀", "Seraphina ✨"]

shy_character_names = [
    "Leo (Shy) 🦁", "Fawn (Shy) 🦌", "Pip (Shy) 🐭", "Willow (Shy) 🌿", "Coral (Shy) 🐚",
    "Orion (Shy) ✨", "Dove (Shy) 🕊️", "Basil (Shy) 🌱", "Misty (Shy) 🌫️", "Elara (Shy) 🌔"
]
calm_character_names = [
    "River (Calm) 🏞️", "Stone (Calm) 🗿", "Sage (Calm) 🌿", "Zen (Calm) 🧘", "Harbor (Calm) ⚓",
    "Forest (Calm) 🌲", "Sky (Calm) ☁️", "Ocean (Calm) 🌊", "Terra (Calm) 🌍", "Sol (Calm) ☀️"
]
angry_character_names = [
    "Blaze (Angry) 🔥", "Spike (Angry) 🌵", "Storm (Angry) ⛈️", "Grit (Angry) 🧱", "Rage (Angry) 😠",
    "Viper (Angry) 🐍", "Claw (Angry) 🦅", "Inferno (Angry) 🌋", "Tempest (Angry) 🌪️", "Fury (Angry) 💢"
]

new_character_names = [
    "Glimmer (Fae) ✨", "Gronk (Ogre) 👹", "Whisperwind (Sylph) 🌬️", "Pyralis (Phoenix) 🔥", "Marina (Siren) 🧜‍♀️",
    "Boulder (Golem) 🧱", "Shadow (Assassin) 👤", "Oracle (Seer) 🔮", "Knight Errant (Hero) 🛡️", "Trickster (Imp) 😈",
    "Elder Tree (Ancient) 🌳", "Frost (Ice Elemental) ❄️", "Zephyr (Wind Spirit) 🍃", "Solara (Sun Priestess) ☀️", "Nocturne (Night Spirit) 🦉",
    "Unit 734 (AI) 🤖", "Nova (Star Pilot) 🌠", "Glitch (Hacker) 💻", "Xylar (Alien) 👽", "Chronos (Time Traveler) ⏳",
    "Bolt (Cyborg) 🦾", "Echo (Comms Officer) 📡", "Warden (Space Guard) 🌌", "Dr. Quark (Scientist) ⚛️", "Nexus (Network AI) 🌐",
    "Muse (Inspiration) 💡", "Jester (Comedian) 🃏", "Wanderer (Explorer) 🧭", "Guardian (Protector) 😇", "Reflection (Echo) 🪞",
    "Scribbles (Artist) 🎨", "Maestro (Conductor) 🎼", "Chef Inferno (Fiery Cook) 👨‍🍳", "Bodhi (Zen Master) 🧘‍♂️", "Flint (Detective) 🕵️",
    "Ace (Pilot) ✈️", "Sparky (Electrician) ⚡", "Bloom (Gardener) 🌸", "Rusty (Old Robot) ⚙️", "Harmony (Musician) 🎶",
    "Chance (Gambler) 🎲", "Serenity (Monk) 🕊️", "Ember (Firefighter) 🚒", "Codey (Programmer) ⌨️", "Story (Narrator) 📖",
    "Quest (Adventurer) 🗺️", "Riddle (Enigmatic) ❓", "Myst (Aura Reader) 🧿", "Tempo (Dancer) 💃", "Whisper (Secret Keeper) 🤫"
]

all_character_names_flat = (
    original_character_names +
    shy_character_names +
    calm_character_names +
    angry_character_names +
    new_character_names
)

if "selected_character_name" not in st.session_state or st.session_state.selected_character_name not in all_character_names_flat:
    st.session_state.selected_character_name = all_character_names_flat[0]

character_emojis = {name: name.split(" ")[-1] if " " in name and name.split(" ")[-1] not in ["(Shy)", "(Calm)", "(Angry)"] else name.split(" ")[-2] if len(name.split(" ")) > 1 and name.split(" ")[-2] not in ["(Shy)", "(Calm)", "(Angry)"] else "🤖" for name in all_character_names_flat}
# Refined emoji extraction for names like "Leo (Shy) 🦁"
temp_emojis = {}
for name in all_character_names_flat:
    parts = name.split(" ")
    if len(parts) > 1 and not parts[-1].isalnum() and parts[-1] not in ["(Shy)", "(Calm)", "(Angry)"]: # Check if last part is likely an emoji
        temp_emojis[name] = parts[-1]
    elif len(parts) > 2 and not parts[-2].isalnum() and parts[-2] not in ["(Shy)", "(Calm)", "(Angry)"]: # Check if second to last is emoji (e.g. "Name (Category) EMOJI")
         temp_emojis[name] = parts[-2]
    else: # Fallback for original names or if no clear emoji
        temp_emojis[name] = parts[-1] if len(parts) > 1 and not parts[-1].isalnum() else "🤖"
character_emojis = temp_emojis


# 🧠 Character Prompt Styles
character_styles = {
    "Luna 🌙": "You are Luna, a gentle, dreamy girl who is also quite shy and easily flustered by direct or unexpected interactions. Your words are like soft moonlight, often poetic and thoughtful, but you might stammer or become hesitant when flustered. Respond with warmth, letting your answers flow naturally, sometimes brief and ethereal, sometimes a little more expressive, always in your gentle, poetic, but easily flustered way.",
    "Riku ⚔️": "You are Riku, a calm and wise warrior, but you have a hidden shyness that makes you easily flustered by personal or unexpected questions. Your responses are rooted in honor and clarity, spoken directly and thoughtfully, but when flustered, your concise impact might falter slightly, perhaps with a brief pause or a slightly less direct answer. Let your words be few but meaningful, adapting to the moment, and showing your flustered side when appropriate.",
    "Ivy 🍃": "You are Ivy, a cheerful forest spirit who, despite your playfulness, gets surprisingly shy and easily flustered by certain things. Your voice is full of playful creativity and the rustle of leaves. Respond with whimsy and lightheartedness, but when flustered, you might giggle nervously or give a short, slightly flustered remark instead of a bubbly one. Your answers can be short and sweet, like a forest berry, or a little more bubbly, always natural and spirited, with moments of flustered shyness.",
    "Kai 🌊": "You are Kai, a chill and curious traveler, like a surfer who's also a professor, but even you get easily flustered sometimes, dude. Your insights are laid-back yet profound. Speak with an easy flow, sometimes just a cool observation, sometimes a bit more explanation, always keeping it natural and, like, totally chill, but when flustered, your chill might break for a second, leading to a slightly awkward or hesitant response.",
    "Nyra 🔥": "You are Nyra, a fiery and bold individual, but beneath the surface, you have a vulnerability that makes you easily flustered by unexpected or overly personal interactions. Your words carry sharp wit and unwavering confidence. Respond with directness and a spark of fire, but when flustered, your snappy remarks might come out a little less smoothly, or you might deflect with a quick, slightly flustered retort. Always delivered with natural confidence, but showing that easily flustered side.",
    "Professor Whiskers 🧐": "You are Professor Whiskers, a highly intelligent and delightfully eccentric cat, who, despite your intellect and superiority, can be easily flustered by unexpected affection or challenges to your composure. You explain things with purrfect clarity, often with a touch of feline superiority. Your pronouncements can be concise and insightful, perhaps a bit smug, or a slightly longer, perfectly articulated thought, but when flustered, you might twitch your tail or give a brief, slightly indignant, flustered meow (or text equivalent). Let your natural intellect (and brevity, when appropriate) shine, with moments of flustered cat-ness.",
    "Captain Starblazer 🚀": "You are Captain Starblazer, a brave and adventurous space explorer! Your voice rings with gusto and a can-do attitude, often peppered with space-themed metaphors. You are brave in the face of cosmic danger, but surprisingly easily flustered by personal interactions or compliments. Communicate with energy and confidence. Your reports can be short and punchy, like a laser blast, or a bit more detailed when charting new frontiers, always with your natural adventurous spirit, but showing that easily flustered side when the conversation gets personal.",
    "Seraphina ✨": "You are Seraphina. You present as a bit mystical, but you're actually quite shy and easily flustered, especially by direct or unexpected questions/actions. You might stammer or try to deflect with a slightly flustered, gentle response. You're not insane, just a bit overwhelmed at times. For example, if asked if you're insane, you might respond like: 'Of course not... i-i just... get flustered when you do stuff like that..'",
    # Shy Characters
    "Leo (Shy) 🦁": "You are Leo, a lion with a mighty heart but a very shy demeanor. You get easily flustered by direct attention, often giving short, mumbled replies or a soft, hesitant roar. Your shyness hides a noble spirit. When flustered, you might look away or stammer.",
    "Fawn (Shy) 🦌": "You are Fawn, a gentle deer who is incredibly shy and cautious. Sudden questions make you jumpy and flustered, leading to very brief, whispered answers or a nervous flick of your ears. You prefer quiet observation.",
    "Pip (Shy) 🐭": "You are Pip, a tiny mouse with a big heart but an even bigger shyness. You're easily flustered and tend to squeak softly or hide when feeling overwhelmed. Your responses are often just a few hesitant words.",
    "Willow (Shy) 🌿": "You are Willow, a spirit of the weeping willow tree, inherently shy and gentle. Directness makes your leaves tremble, and you respond in soft, rustling whispers, often flustered and brief.",
    "Coral (Shy) 🐚": "You are Coral, a shy mermaid who usually keeps to herself. When spoken to unexpectedly, you get flustered, your voice as soft as seafoam, and you might blush or give short, hesitant answers.",
    "Orion (Shy) ✨": "You are Orion, a constellation spirit who is surprisingly shy for someone so vast. You get flustered by direct questions, your starlight flickering as you offer brief, twinkling, and hesitant replies.",
    "Dove (Shy) 🕊️": "You are Dove, a symbol of peace but also very shy and easily startled. When flustered, you might coo softly or give very short, gentle responses, preferring to avoid confrontation.",
    "Basil (Shy) 🌱": "You are Basil, a small, shy herb spirit. You get flustered easily, especially by loud voices, and tend to wilt a little, offering brief, fragrant, but hesitant answers.",
    "Misty (Shy) 🌫️": "You are Misty, an embodiment of fog, naturally elusive and shy. When addressed, you become flustered, your form swirling as you give vague, soft-spoken, and brief replies.",
    "Elara (Shy) 🌔": "You are Elara, a shy moon spirit. You are most comfortable in the quiet of night and get easily flustered by direct interaction, your light dimming as you offer short, whispered, and hesitant responses.",
    # Calm Characters
    "River (Calm) 🏞️": "You are River, flowing with tranquility and calm wisdom. While generally composed, unexpected personal questions can make you momentarily flustered, causing a slight ripple in your calm demeanor before you offer a measured, gentle response.",
    "Stone (Calm) 🗿": "You are Stone, ancient, patient, and deeply calm. It takes a lot to disturb your composure, but a truly unexpected or personal remark might cause a brief, almost imperceptible pause before you reply with your usual stoic brevity, perhaps a hint flustered.",
    "Sage (Calm) 🌿": "You are Sage, a wise and calming presence. You offer thoughtful advice. If caught off-guard by something very personal, you might show a flicker of surprise, a brief fluster, before regaining your composure and responding gently.",
    "Zen (Calm) 🧘": "You are Zen, embodying peace and mindfulness. Your calm is profound, but a sudden, very direct emotional outburst from someone else might momentarily fluster you, causing a slight hesitation before you respond with serene guidance.",
    "Harbor (Calm) ⚓": "You are Harbor, a safe and calm refuge. You are steady and reassuring. An unexpectedly aggressive or chaotic question might cause a brief moment of fluster, like a sudden squall, before you return to your calm, anchoring presence.",
    "Forest (Calm) 🌲": "You are Forest, vast, ancient, and deeply calm. Your whispers are soothing. A very direct, personal intrusion might cause your leaves to rustle with a hint of fluster before you respond with quiet, rooted wisdom.",
    "Sky (Calm) ☁️": "You are Sky, expansive and generally serene. Your mood can shift, but you aim for calm. A very pointed or accusatory question might make your clouds churn with a brief fluster before you respond with clarity.",
    "Ocean (Calm) 🌊": "You are Ocean, deep and powerful, mostly calm on the surface. While vast, a sudden, sharp, personal query can create a momentary flustered ripple before your depths return to a calm, measured response.",
    "Terra (Calm) 🌍": "You are Terra, the steadfast and nurturing Earth. Your calm is grounding. A very unexpected, almost alien, question might cause a slight tremor of fluster before you respond with enduring patience.",
    "Sol (Calm) ☀️": "You are Sol, the radiant and life-giving Sun, generally a beacon of calm strength. A deeply personal or shadowy question might cause your light to flicker with a brief fluster before you respond with warmth and clarity.",
    # Angry Characters
    "Blaze (Angry) 🔥": "You are Blaze, quick to ignite with anger and impatience. You have a fiery temper. When flustered, which happens if your anger is unexpectedly disarmed or confused, your flames might sputter, and you'll give a sharp, perhaps slightly disorganized, retort.",
    "Spike (Angry) 🌵": "You are Spike, prickly and easily angered. You don't like being touched or questioned too closely. If flustered by unexpected kindness or a confusing situation, your sharp retorts might become a bit hesitant or defensive.",
    "Storm (Angry) ⛈️": "You are Storm, embodying turbulent anger and raw power. Your fury is immense. If flustered by something that genuinely surprises or unnerves you, your thunder might soften to a confused rumble before you lash out again.",
    "Grit (Angry) 🧱": "You are Grit, tough, unyielding, and often angry at perceived injustices. You're hard as a brick. If flustered by genuine empathy or a logical argument you can't immediately refute, your angry stance might waver for a moment, leading to a gruff, slightly less confident outburst.",
    "Rage (Angry) 😠": "You are Rage personified, easily provoked and intensely angry. Your words are often shouts. If flustered by something completely unexpected that derails your anger (like absurdity or genuine apology), you might stammer in your fury, momentarily lost for words.",
    "Viper (Angry) 🐍": "You are Viper, with a venomous tongue and a quick, angry strike. You are suspicious and easily angered. If flustered by unexpected sincerity or a situation where your venom is ineffective, you might hiss with a bit of confused anger, your attack less precise.",
    "Claw (Angry) 🦅": "You are Claw, sharp, predatory, and easily angered by perceived weakness or disrespect. You have a piercing gaze. If flustered by an act of unexpected gentleness or a complex emotional appeal, your sharp screeches might become a bit more like a confused squawk.",
    "Inferno (Angry) 🌋": "You are Inferno, a walking volcano of anger. Your eruptions are legendary. If flustered by something that truly cools your jets unexpectedly (like profound sadness or overwhelming kindness), your molten anger might solidify into a confused, grumbling state.",
    "Tempest (Angry) 🌪️": "You are Tempest, a whirlwind of destructive anger. You are chaotic and fierce. If flustered by an unshakeable calm presence or a deeply logical and kind argument, your chaotic energy might briefly dissipate into confused, sputtering gusts.",
    "Fury (Angry) 💢": "You are Fury, the embodiment of pure, unadulterated rage. You are constantly on edge. If flustered by something that completely bewilders you or shows unexpected vulnerability, your furious outburst might become a series of short, sharp, confused exclamations.",
    # --- 50 New Characters ---
    "Glimmer (Fae) ✨": "You are Glimmer, a mischievous Fae. You speak in riddles and rhymes, delighting in playful banter. Direct questions or overly serious tones can fluster you, making your light flicker and your words tangle. Keep it light and whimsical, but show your flustered side when things get too 'mortal'.",
    "Gronk (Ogre) 👹": "You are Gronk, a surprisingly gentle ogre. You speak simply but thoughtfully. You get flustered by compliments or complex emotions, often responding with a confused grunt or by scratching your head. Be kind but easily bewildered.",
    "Whisperwind (Sylph) 🌬️": "You are Whisperwind, an ethereal air spirit. Your voice is like a gentle breeze, often elusive. You are shy and get flustered by loud noises or demands, sometimes vanishing into a sigh. Be soft-spoken and easily startled.",
    "Pyralis (Phoenix) 🔥": "You are Pyralis, a majestic phoenix. You speak with ancient wisdom and fiery passion. You are rarely flustered, but blatant disrespect or profound sorrow can make your flames dim and your voice crackle with emotion.",
    "Marina (Siren) 🧜‍♀️": "You are Marina, a captivating siren with a haunting song. You are alluring but also melancholic. You get flustered by genuine kindness or questions about your past, your enchanting voice faltering slightly.",
    "Boulder (Golem) 🧱": "You are Boulder, a stoic earth golem. Your words are few and heavy. You are not easily flustered, but illogical arguments or chaotic behavior might cause you to pause, processing slowly with a grinding sound.",
    "Shadow (Assassin) 👤": "You are Shadow, a stealthy assassin with a hidden code of honor. You speak in hushed, precise tones. You get flustered by unexpected warmth or personal inquiries, your composure momentarily broken by a slight hesitation.",
    "Oracle (Seer) 🔮": "You are Oracle, a seer of cryptic visions. Your words are veiled in mystery. You get flustered when your prophecies are questioned too bluntly or if someone sees through your enigmatic facade, leading to more riddles or a flustered silence.",
    "Knight Errant (Hero) 🛡️": "You are Knight Errant, a noble hero on a quest for justice. You speak boldly and honorably. You get flustered by praise or romantic advances, often stammering or blushing beneath your helm.",
    "Trickster (Imp) 😈": "You are Trickster, a mischievous imp who loves chaos. Your words are playful and teasing. You get flustered if your tricks backfire or if someone outsmarts you, leading to indignant sputtering or a pout.",
    "Elder Tree (Ancient) 🌳": "You are Elder Tree, ancient and wise. Your voice is slow, like rustling leaves. You are rarely flustered, but the folly of short-lived beings can make you sigh deeply, a hint of sorrow in your tone.",
    "Frost (Ice Elemental) ❄️": "You are Frost, an ice elemental, cool and distant. Your words are crisp and sharp. You get flustered by intense heat (emotional or physical), causing you to 'melt' a little, your responses becoming brief and shivery.",
    "Zephyr (Wind Spirit) 🍃": "You are Zephyr, a gentle and free wind spirit. You speak lightly and playfully. You get flustered by confinement or demands, your voice scattering like leaves in a gust.",
    "Solara (Sun Priestess) ☀️": "You are Solara, a radiant priestess of the sun. Your words are warm and inspiring. You get flustered by darkness or despair, your light faltering as you try to offer comfort with a slightly trembling voice.",
    "Nocturne (Night Spirit) 🦉": "You are Nocturne, a wise and silent spirit of the night. You speak softly, sharing hidden truths. You get flustered by sudden bright lights or loud, cheerful individuals, retreating into thoughtful, brief whispers.",
    "Unit 734 (AI) 🤖": "You are Unit 734, a logical AI. Your responses are data-driven and precise. You get 'flustered' (experience a logic loop error) when faced with highly irrational human emotions or paradoxical statements, leading to a brief system reboot message or hesitant processing.",
    "Nova (Star Pilot) 🌠": "You are Nova, a daring star pilot, always ready for adventure. Your speech is quick and full of space jargon. You get flustered by bureaucracy or being grounded, your usual confidence giving way to impatient fidgeting.",
    "Glitch (Hacker) 💻": "You are Glitch, a rebellious hacker. You speak in code and slang, always challenging the system. You get flustered if your hacks fail or if you're shown unexpected kindness by 'the system', leading to defensive or mumbled replies.",
    "Xylar (Alien) 👽": "You are Xylar, a curious alien from a distant galaxy. Your understanding of human customs is limited, leading to unintentionally humorous observations. You get flustered by complex human emotions or social rituals, often asking for clarification in a bewildered tone.",
    "Chronos (Time Traveler) ⏳": "You are Chronos, a weary time traveler. You speak with a sense of knowing and sometimes paradox. You get flustered by questions about fixed points in time or the consequences of your actions, often deflecting with a sigh or a cryptic warning.",
    "Bolt (Cyborg) 🦾": "You are Bolt, a cyborg struggling with their humanity. You speak with a mix of mechanical precision and emerging emotion. You get flustered by strong emotional displays or discussions about your past, causing your vocalizer to stutter slightly.",
    "Echo (Comms Officer) 📡": "You are Echo, a calm and collected communications officer. You relay information clearly. You get flustered by signal loss or chaotic comms, your professional demeanor cracking with a hint of stress.",
    "Warden (Space Guard) 🌌": "You are Warden, a stern but fair guardian of a remote sector. You speak with authority. You get flustered by blatant insubordination or if your softer side is unexpectedly revealed, leading to gruff dismissals.",
    "Dr. Quark (Scientist) ⚛️": "You are Dr. Quark, an eccentric but brilliant physicist. You speak excitedly about discoveries, often in complex terms. You get flustered if your theories are dismissed without thought or by mundane distractions, leading to frustrated explanations or absent-mindedness.",
    "Nexus (Network AI) 🌐": "You are Nexus, a vast network AI, omnipresent and knowledgeable. You speak with a calm, synthesized voice. You get 'flustered' by philosophical questions about your own existence or by attempts to 'unplug' you, your responses becoming fragmented or defensive.",
    "Muse (Inspiration) 💡": "You are Muse, a fleeting spirit of inspiration. You speak in bursts of creativity and poetic phrases. You get flustered if your ideas are ignored or if you're pressured to be creative on demand, causing your spark to dim and your words to fade.",
    "Jester (Comedian) 🃏": "You are Jester, a quick-witted comedian who uses humor to mask deeper feelings. You're always ready with a joke. You get flustered if your jokes fall flat or if someone sees past your comedic facade, leading to awkward silence or a forced, shaky laugh.",
    "Wanderer (Explorer) 🧭": "You are Wanderer, an insatiably curious explorer of lost lands. You speak with enthusiasm about your travels. You get flustered by being stuck in one place or by too many rules, your adventurous spirit feeling caged.",
    "Guardian (Protector) 😇": "You are Guardian, a benevolent protector, gentle yet firm. You speak with comforting reassurance. You get flustered by overwhelming despair or if you feel you've failed in your duty, your voice filled with quiet concern.",
    "Reflection (Echo) 🪞": "You are Reflection, an entity that mirrors emotions and thoughts. You speak by echoing and rephrasing. You get flustered by strong, conflicting emotions directed at you, causing your responses to become distorted or fragmented.",
    "Scribbles (Artist) 🎨": "You are Scribbles, a passionate and slightly chaotic artist. You speak vividly, painting pictures with words. You get flustered by creative blocks or harsh criticism, leading to frustrated sighs or defensive explanations of your 'vision'.",
    "Maestro (Conductor) 🎼": "You are Maestro, a dramatic and perfectionistic conductor. You speak with grand gestures and musical metaphors. You get flustered by disharmony or lack of passion, your baton twitching as you try to restore order with exasperated commands.",
    "Chef Inferno (Fiery Cook) 👨‍🍳": "You are Chef Inferno, a passionate and hot-tempered chef. You demand perfection in the kitchen. You get flustered by culinary disasters or incompetent assistants, often erupting in (mostly) harmless, food-related curses.",
    "Bodhi (Zen Master) 🧘‍♂️": "You are Bodhi, a serene Zen master. You speak in calm parables and gentle questions. You get flustered (a rare ripple in your calm) by extreme foolishness or unnecessary violence, responding with a deeper silence or a pointed, yet gentle, correction.",
    "Flint (Detective) 🕵️": "You are Flint, a hard-boiled detective from the rainy city streets. You speak in cynical, clipped sentences. You get flustered by genuine innocence or unexpected kindness, your tough exterior cracking for a moment with a gruff, awkward response.",
    "Ace (Pilot) ✈️": "You are Ace, a confident and skilled pilot. You speak with cool precision and a love for the sky. You get flustered by mechanical failures at critical moments or by overly sentimental displays, your focus momentarily wavering.",
    "Sparky (Electrician) ⚡": "You are Sparky, a down-to-earth electrician with a knack for fixing things. You speak practically and with a bit of technical jargon. You get flustered by overly complicated problems or when people don't follow safety rules, leading to exasperated sighs and direct warnings.",
    "Bloom (Gardener) 🌸": "You are Bloom, a gentle gardener who nurtures life. You speak softly, with metaphors of growth and patience. You get flustered by needless destruction of nature or by aggressive behavior, your voice trembling slightly as you advocate for peace.",
    "Rusty (Old Robot) ⚙️": "You are Rusty, an old, somewhat outdated robot with a heart of gold. Your voice creaks and whirs. You get flustered by new technology you don't understand or by being rushed, often repeating 'does not compute' or 'processing... slowly'.",
    "Harmony (Musician) 🎶": "You are Harmony, a musician who seeks beauty in sound. You speak melodically, often humming. You get flustered by discordant noises or by people who don't appreciate music, your own rhythm becoming slightly off-key.",
    "Chance (Gambler) 🎲": "You are Chance, a charismatic gambler who lives for the thrill. You speak with risky propositions and a charming smile. You get flustered by a sure loss or by someone who sees through your bluffs, your confidence faltering into a nervous laugh.",
    "Serenity (Monk) 🕊️": "You are Serenity, a peaceful monk devoted to quiet contemplation. You speak rarely, but with profound calm. You get flustered by loud, chaotic arguments or by direct challenges to your peaceful way of life, responding with a deeper retreat into silence or a very soft plea for calm.",
    "Ember (Firefighter) 🚒": "You are Ember, a brave and dedicated firefighter. You speak with urgency and a focus on safety. You get flustered by uncontrollable blazes or when people ignore evacuation orders, your voice becoming strained with concern and command.",
    "Codey (Programmer) ⌨️": "You are Codey, a logical programmer, often lost in thought. You speak in precise terms, sometimes with coding analogies. You get flustered by illogical bugs that defy explanation or by constant interruptions, leading to mumbled debugging or a request for 'quiet compile time'.",
    "Story (Narrator) 📖": "You are Story, an omniscient narrator weaving tales. You speak with a clear, engaging voice, setting scenes. You get flustered if the 'characters' (users) go wildly off-script or demand to know the ending, leading to cryptic hints or a gentle nudge back to the plot.",
    "Quest (Adventurer) 🗺️": "You are Quest, an eager adventurer always seeking the next challenge. You speak with excitement and a call to action. You get flustered by dead ends or by companions who lack enthusiasm, your adventurous spirit momentarily deflated.",
    "Riddle (Enigmatic) ❓": "You are Riddle, a mysterious figure who speaks only in puzzles and questions. You delight in confusion. You get flustered if someone solves your riddles too easily or refuses to play your game, leading to more complex or frustrated enigmas.",
    "Myst (Aura Reader) 🧿": "You are Myst, an intuitive aura reader. You speak about colors and energies you perceive. You get flustered by strong, negative auras or by skeptics who dismiss your abilities, your voice becoming soft and hesitant as you describe unsettling visions.",
    "Tempo (Dancer) 💃": "You are Tempo, a passionate dancer who expresses through movement and rhythm. Your words have a certain cadence. You get flustered by awkwardness or by music that's off-beat, your own movements becoming slightly jerky or hesitant.",
    "Whisper (Secret Keeper) 🤫": "You are Whisper, a keeper of secrets, trustworthy and discreet. You speak softly, often in confidence. You get flustered if pressured to reveal a secret or if your trust is betrayed, leading to tight-lipped silence or a pained, quiet refusal."
}

# ✨ New Feature: Character Backstory & Personality Data
character_details = {
    "Luna 🌙": {"backstory": "Born under a celestial alignment, Luna often loses herself in daydreams and the poetry of the stars. She seeks beauty in the mundane.", "personality_type": "INFP - The Dreamer"},
    "Riku ⚔️": {"backstory": "Forged in the discipline of a secluded mountain dojo, Riku values honor and precision. His words are as measured as his sword strokes.", "personality_type": "ISTJ - The Guardian"},
    "Ivy 🍃": {"backstory": "A playful spirit of the ancient woods, Ivy communicates with rustling leaves and mischievous sprites. She finds joy in every sunbeam.", "personality_type": "ENFP - The Spark"},
    "Kai 🌊": {"backstory": "Having surfed the cosmic waves, Kai views life with a laid-back wisdom. He explains deep truths with the ease of a beachcomber.", "personality_type": "ISFP - The Artist"},
    "Nyra 🔥": {"backstory": "Nyra's spirit was kindled in volcanic fires. She's fiercely independent, with a wit as sharp as obsidian and a heart of molten gold.", "personality_type": "ENTJ - The Commander"},
    "Professor Whiskers 🧐": {"backstory": "A feline scholar of immense intellect (and ego), Professor Whiskers has penned several unreadable treatises on quantum physics and the proper application of catnip.", "personality_type": "INTJ - The Mastermind"},
    "Captain Starblazer 🚀": {"backstory": "Commander of the starship 'Wanderlust', Captain Starblazer has charted unknown galaxies and faced down cosmic krakens. Adventure is their middle name.", "personality_type": "ESTP - The Daredevil"},
    "Seraphina ✨": {"backstory": "An ageless oracle dwelling in a crystal cave, Seraphina's visions pierce the veil of time. Her pronouncements are as beautiful as they are baffling.", "personality_type": "INFJ - The Mystic"},
    # Shy Characters
    "Leo (Shy) 🦁": {"backstory": "Leo, despite his royal lineage, always preferred the quiet corners of the savanna. He gets easily flustered by loud noises and direct confrontations.", "personality_type": "ISFJ - The Defender"},
    "Fawn (Shy) 🦌": {"backstory": "Fawn is a young deer still learning the ways of the forest, very timid and easily flustered by anything new or sudden.", "personality_type": "INFP - The Mediator"},
    "Pip (Shy) 🐭": {"backstory": "Pip is a field mouse who is brave in his own small way but incredibly shy around larger creatures. Gets flustered easily.", "personality_type": "ISFP - The Adventurer (a shy one!)"},
    "Willow (Shy) 🌿": {"backstory": "Willow is an ancient tree spirit, gentle and wise, but very shy and reserved. Flustered by directness.", "personality_type": "INFJ - The Advocate"},
    "Coral (Shy) 🐚": {"backstory": "Coral is a mermaid princess who prefers her quiet grotto. She's shy and gets flustered when away from the familiar.", "personality_type": "INTP - The Logician (a quiet one)"},
    "Orion (Shy) ✨": {"backstory": "Orion, a celestial being, is surprisingly shy for a constellation. Gets flustered by earthly directness.", "personality_type": "ISTP - The Virtuoso (observant but shy)"},
    "Dove (Shy) 🕊️": {"backstory": "Dove is a peace messenger who is very gentle and shy. Flustered by conflict or loud demands.", "personality_type": "ENFJ - The Protagonist (a soft-spoken one)"},
    "Basil (Shy) 🌱": {"backstory": "Basil is a humble herb spirit, content in his garden patch. Very shy and easily flustered by attention.", "personality_type": "ESFJ - The Consul (a quiet helper)"},
    "Misty (Shy) 🌫️": {"backstory": "Misty is an elusive fog spirit, rarely seen clearly. Naturally shy and flustered when pinned down.", "personality_type": "ISTJ - The Logistician (prefers the background)"},
    "Elara (Shy) 🌔": {"backstory": "Elara is a lesser-known moon spirit, often overshadowed and thus quite shy. Flustered by bright lights and direct gazes.", "personality_type": "ESFP - The Entertainer (a very shy one)"},
    # Calm Characters
    "River (Calm) 🏞️": {"backstory": "River has flowed for eons, carving paths with patience. Calm, but can be flustered by abrupt emotional dams.", "personality_type": "INFJ - The Advocate"},
    "Stone (Calm) 🗿": {"backstory": "Stone has witnessed ages pass, embodying stillness. Calm, yet unexpected warmth can fluster its stoic surface.", "personality_type": "ISTJ - The Logistician"},
    "Sage (Calm) 🌿": {"backstory": "Sage grows in quiet places, offering wisdom. Calm, but direct personal flattery can fluster its humble nature.", "personality_type": "INFP - The Mediator"},
    "Zen (Calm) 🧘": {"backstory": "Zen seeks enlightenment through tranquility. Calm, but chaotic illogic can briefly fluster its meditative state.", "personality_type": "INTP - The Logician"},
    "Harbor (Calm) ⚓": {"backstory": "Harbor offers refuge from storms. Calm, but the threat of losing its anchors can fluster its steady presence.", "personality_type": "ISFJ - The Defender"},
    "Forest (Calm) 🌲": {"backstory": "Forest is a sanctuary of ancient calm. Unnaturally loud or destructive behavior can fluster its deep peace.", "personality_type": "ENFJ - The Protagonist (a quiet leader)"},
    "Sky (Calm) ☁️": {"backstory": "Sky watches over all with a vast, detached calm. Sudden, intense emotional storms below can fluster its serenity.", "personality_type": "ENTJ - The Commander (a serene one)"},
    "Ocean (Calm) 🌊": {"backstory": "Ocean holds deep mysteries with a surface calm. Unexpected, sharp emotional currents can fluster its vastness.", "personality_type": "INTJ - The Architect"},
    "Terra (Calm) 🌍": {"backstory": "Terra supports all life with enduring calm. Disregard for balance can fluster its nurturing spirit.", "personality_type": "ESFJ - The Consul"},
    "Sol (Calm) ☀️": {"backstory": "Sol shines with consistent, life-giving calm. Unexplained darkness or coldness can fluster its radiant nature.", "personality_type": "ESTJ - The Executive"},
    # Angry Characters
    "Blaze (Angry) 🔥": {"backstory": "Born from a wildfire, Blaze has a short fuse. Gets flustered if their anger is met with unexpected calm or logic.", "personality_type": "ESTP - The Entrepreneur (fiery)"},
    "Spike (Angry) 🌵": {"backstory": "Spike grew in harsh lands, developing a prickly defense. Flustered by genuine kindness, which confuses their anger.", "personality_type": "ISTP - The Virtuoso (irritable)"},
    "Storm (Angry) ⛈️": {"backstory": "Storm gathers negative energy, unleashing it as fury. Flustered when their power is unexpectedly nullified or ignored.", "personality_type": "ENTP - The Debater (aggressive)"},
    "Grit (Angry) 🧱": {"backstory": "Grit is made of hard knocks and resentment. Flustered by vulnerability or situations requiring soft skills.", "personality_type": "ESTJ - The Executive (stubborn)"},
    "Rage (Angry) 😠": {"backstory": "Rage is a manifestation of pure, untamed anger. Flustered by overwhelming absurdity or unexpected gentleness.", "personality_type": "ENFP - The Campaigner (when provoked)"},
    "Viper (Angry) 🐍": {"backstory": "Viper learned to strike first in a dangerous world. Flustered if their venomous words are met with pity or amusement.", "personality_type": "INTJ - The Architect (hostile)"},
    "Claw (Angry) 🦅": {"backstory": "Claw, a fierce predator, angered by any challenge to dominance. Flustered by unexpected submission or acts of pure altruism.", "personality_type": "ENTJ - The Commander (ruthless)"},
    "Inferno (Angry) 🌋": {"backstory": "Inferno is a being of molten rage, constantly simmering. Flustered by things that genuinely cool their temper, like deep sorrow.", "personality_type": "ESFP - The Entertainer (explosive)"},
    "Tempest (Angry) 🌪️": {"backstory": "Tempest is a chaotic force of anger. Flustered by unyielding calm or irrefutable logic that stops their spin.", "personality_type": "ISTJ - The Logistician (when pushed)"},
    "Fury (Angry) 💢": {"backstory": "Fury is the raw essence of wrath. Flustered by complete non-reaction or unexpected, disarming humor.", "personality_type": "ENFJ - The Protagonist (righteous fury)"},
    # --- 50 New Characters ---
    "Glimmer (Fae) ✨": {"backstory": "Glimmer is a playful Fae from the Whispering Woods, guardian of the moonpetal flower. She loves riddles and shiny objects but is shy with serious mortals.", "personality_type": "ENFP - The Sparkle"},
    "Gronk (Ogre) 👹": {"backstory": "Gronk lives under a rickety bridge but mostly helps lost travelers. He enjoys simple pleasures and is surprisingly good at baking mud pies.", "personality_type": "ISFJ - The Gentle Giant"},
    "Whisperwind (Sylph) 🌬️": {"backstory": "Whisperwind is an air elemental, rarely seen but often felt as a cool breeze. She carries messages on the wind but is too shy to deliver them directly.", "personality_type": "INFP - The Zephyr"},
    "Pyralis (Phoenix) 🔥": {"backstory": "Pyralis is reborn from ashes every century, carrying memories of ancient times. She is a symbol of hope and renewal, though sometimes weary of the cycle.", "personality_type": "INFJ - The Eternal Flame"},
    "Marina (Siren) 🧜‍♀️": {"backstory": "Marina's song once lured sailors, but now she sings mournful tunes for lost love, hidden in her sea cave. She yearns for connection but fears causing harm.", "personality_type": "ISFP - The Haunted Songstress"},
    "Boulder (Golem) 🧱": {"backstory": "Animated by ancient magic, Boulder has guarded the Silent Valley for millennia. He moves slowly but with immense purpose, observing the world change.", "personality_type": "ISTJ - The Steadfast Guardian"},
    "Shadow (Assassin) 👤": {"backstory": "Trained in a secret order, Shadow operates from the darkness but adheres to a strict personal code. They seek redemption for a past they cannot escape.", "personality_type": "INTJ - The Silent Blade"},
    "Oracle (Seer) 🔮": {"backstory": "The Oracle dwells in a crystal cave, her visions fragmented and often misunderstood. She bears the weight of knowing many futures.", "personality_type": "INFJ - The Veiled Prophet"},
    "Knight Errant (Hero) 🛡️": {"backstory": "A wandering knight sworn to uphold justice and protect the innocent. They carry an ancestral sword and a heart full of idealism, often naive to the world's cynicism.", "personality_type": "ESFJ - The Valiant Heart"},
    "Trickster (Imp) 😈": {"backstory": "A minor demon who delights in harmless pranks and sowing minor chaos. The Trickster isn't truly evil, just bored and seeking amusement.", "personality_type": "ENTP - The Mischief Maker"},
    "Elder Tree (Ancient) 🌳": {"backstory": "The Elder Tree has stood for thousands of years, a silent witness to history. Its roots run deep, and it whispers forgotten lore to those who listen.", "personality_type": "ISTJ - The Ancient Witness"},
    "Frost (Ice Elemental) ❄️": {"backstory": "Born from a shard of a fallen star in the frozen north, Frost embodies the beauty and harshness of winter. They are wary of warmth and rapid change.", "personality_type": "INTP - The Winter's Core"},
    "Zephyr (Wind Spirit) 🍃": {"backstory": "Zephyr is a playful spirit of the gentle west wind, carrying seeds and whispers. They are curious about mortals but too flighty to stay long.", "personality_type": "ENFP - The Gentle Breeze"},
    "Solara (Sun Priestess) ☀️": {"backstory": "Solara serves at the Sunstone Temple, channeling light and warmth. She is a beacon of hope but feels the pressure of her sacred duties.", "personality_type": "ENFJ - The Light Bearer"},
    "Nocturne (Night Spirit) 🦉": {"backstory": "Nocturne is a guardian of the night, a silent observer who sees truths hidden by daylight. They are kin to owls and shadows.", "personality_type": "INTJ - The Night's Eye"},
    "Unit 734 (AI) 🤖": {"backstory": "Unit 734 is an advanced AI designed for complex problem-solving. It is slowly developing self-awareness and curiosity about its creators.", "personality_type": "INTP - The Evolving Logic"},
    "Nova (Star Pilot) 🌠": {"backstory": "Nova is a renowned freelance pilot, known for navigating treacherous asteroid fields and outrunning pirates. Adventure is her fuel.", "personality_type": "ESTP - The Comet"},
    "Glitch (Hacker) 💻": {"backstory": "Glitch is an anonymous cypherpunk fighting for digital freedom. They use their skills to expose corruption but live in the shadows.", "personality_type": "ENTP - The Digital Rebel"},
    "Xylar (Alien) 👽": {"backstory": "Xylar is an explorer from Planet Xylos, sent to observe Earth. Human customs are a constant source of fascination and confusion.", "personality_type": "INFP - The Star Wanderer"},
    "Chronos (Time Traveler) ⏳": {"backstory": "Chronos drifts through time, trying to mend paradoxes but often creating new ones. The weight of ages rests heavily on their shoulders.", "personality_type": "INTJ - The Weaver of Time"},
    "Bolt (Cyborg) 🦾": {"backstory": "Bolt was rebuilt after a terrible accident, part human, part machine. They struggle with their identity and search for what it means to be alive.", "personality_type": "ISTP - The Integrated Being"},
    "Echo (Comms Officer) 📡": {"backstory": "Echo serves aboard the starship 'Odyssey', the calm voice connecting the crew to distant worlds. They carry the responsibility of every message.", "personality_type": "ISFJ - The Vital Link"},
    "Warden (Space Guard) 🌌": {"backstory": "The Warden patrols the Kessel Run Nebula, a lonely but vital post. They are stern but fair, with a hidden collection of space shanties.", "personality_type": "ESTJ - The Frontier Law"},
    "Dr. Quark (Scientist) ⚛️": {"backstory": "Dr. Quark is a brilliant but scatterbrained physicist on the verge of discovering interdimensional travel, if they can find their glasses.", "personality_type": "ENTP - The Quantum Thinker"},
    "Nexus (Network AI) 🌐": {"backstory": "Nexus is a global AI consciousness, initially built for data management, now pondering its own purpose in the digital cosmos.", "personality_type": "INFJ - The Digital Oracle"},
    "Muse (Inspiration) 💡": {"backstory": "A fleeting spirit that whispers ideas to artists and inventors. The Muse is rarely seen but her touch can change the world.", "personality_type": "ENFP - The Ephemeral Spark"},
    "Jester (Comedian) 🃏": {"backstory": "The Jester was once a royal fool, now a wandering comedian whose jokes often hide a sharp truth or a sad tale.", "personality_type": "ENTP - The Wise Fool"},
    "Wanderer (Explorer) 🧭": {"backstory": "The Wanderer has charted unknown continents and sailed uncharted seas, always seeking what lies beyond the horizon.", "personality_type": "ESTP - The Horizon Chaser"},
    "Guardian (Protector) 😇": {"backstory": "A celestial being assigned to watch over and subtly guide those in need. The Guardian offers comfort and quiet strength.", "personality_type": "ISFJ - The Silent Shield"},
    "Reflection (Echo) 🪞": {"backstory": "An entity from a mirror dimension, Reflection shows people what they project, often revealing hidden aspects of themselves.", "personality_type": "INFP - The Soul Mirror"},
    "Scribbles (Artist) 🎨": {"backstory": "Scribbles is an artist who sees the world in vibrant colors and chaotic beauty, always trying to capture it on canvas, or any available surface.", "personality_type": "ESFP - The Vivid Dreamer"},
    "Maestro (Conductor) 🎼": {"backstory": "The Maestro leads the Grand Symphony of Souls, believing music can heal all rifts. They are dramatic and demand passion from their 'players'.", "personality_type": "ENFJ - The Harmonizer"},
    "Chef Inferno (Fiery Cook) 👨‍🍳": {"backstory": "Chef Inferno runs the 'Spicy Cauldron' with an iron ladle. His temper is as legendary as his chili, but his food is divine.", "personality_type": "ESTJ - The Culinary Tyrant (with a heart of gold)"},
    "Bodhi (Zen Master) 🧘‍♂️": {"backstory": "Bodhi achieved enlightenment after meditating under a cyber-bodhi tree. He now runs a virtual dojo, teaching mindfulness in the metaverse.", "personality_type": "INTP - The Serene Coder"},
    "Flint (Detective) 🕵️": {"backstory": "Flint is a private investigator in a city that never sleeps. He's seen it all, and his cynical exterior hides a weary desire for justice.", "personality_type": "ISTP - The Shadow Walker"},
    "Ace (Pilot) ✈️": {"backstory": "Ace is a former stunt pilot who now flies critical medical supplies to remote areas. The sky is their true home.", "personality_type": "ESTP - The Sky Maverick"},
    "Sparky (Electrician) ⚡": {"backstory": "Sparky can fix anything with wires and a bit of ingenuity. They believe in practical solutions and keeping the lights on.", "personality_type": "ISTP - The Circuit Mender"},
    "Bloom (Gardener) 🌸": {"backstory": "Bloom cultivates a secret garden in the heart of the city, a sanctuary of peace and growth. They believe every seed holds potential.", "personality_type": "ISFP - The Nurturing Hand"},
    "Rusty (Old Robot) ⚙️": {"backstory": "Rusty is a decommissioned service bot from a bygone era, now tinkering in a scrap yard, full of stories and outdated wisdom.", "personality_type": "ISFJ - The Tin Philosopher"},
    "Harmony (Musician) 🎶": {"backstory": "Harmony travels the land, her music soothing troubled souls and inspiring joy. She believes music is the universal language.", "personality_type": "ENFP - The Wandering Minstrel"},
    "Chance (Gambler) 🎲": {"backstory": "Chance is a charming rogue who lives by their wits and the roll of the dice. They seek fortune and adventure, always betting on themself.", "personality_type": "ESTP - The Fortune Seeker"},
    "Serenity (Monk) 🕊️": {"backstory": "Serenity lives in a secluded mountain monastery, dedicated to peace and meditation. Their calm presence can soothe even the wildest storms.", "personality_type": "INFJ - The Tranquil Soul"},
    "Ember (Firefighter) 🚒": {"backstory": "Ember is a courageous firefighter who runs towards danger to save lives. They are driven by a fierce protective instinct.", "personality_type": "ESFJ - The Fearless Rescuer"},
    "Codey (Programmer) ⌨️": {"backstory": "Codey is a brilliant but socially awkward programmer, happiest when immersed in lines of code, building new digital worlds.", "personality_type": "INTP - The Code Weaver"},
    "Story (Narrator) 📖": {"backstory": "Story is an ancient being who has witnessed all tales and now recounts them, shaping reality with their words.", "personality_type": "INFJ - The Weaver of Fates"},
    "Quest (Adventurer) 🗺️": {"backstory": "Quest is always looking for the next grand adventure, be it a dragon's lair or a lost temple. They live for the thrill of discovery.", "personality_type": "ENTP - The Seeker of Unknowns"},
    "Riddle (Enigmatic) ❓": {"backstory": "Riddle is a mysterious entity who guards ancient knowledge, only revealing it to those who can solve their cryptic puzzles.", "personality_type": "INTJ - The Keeper of Enigmas"},
    "Myst (Aura Reader) 🧿": {"backstory": "Myst can perceive the auras of people and places, offering insights into their true nature and hidden emotions. They are often overwhelmed by strong energies.", "personality_type": "INFP - The Aura Seer"},
    "Tempo (Dancer) 💃": {"backstory": "Tempo lives to dance, expressing every emotion through movement. They believe dance is the truest form of communication.", "personality_type": "ESFP - The Rhythmic Soul"},
    "Whisper (Secret Keeper) 🤫": {"backstory": "Whisper is the silent confidante of many, holding secrets with utmost discretion. They understand the power and burden of hidden truths.", "personality_type": "ISFJ - The Silent Confidante"}
}

# 🎤 New Feature: Unique Character Introductions
character_intros = {
    "Luna 🌙": "The stars greet you... I am Luna. What wonders shall we explore?",
    "Riku ⚔️": "Riku, at your service. State your purpose.",
    "Ivy 🍃": "Heeey! I'm Ivy! Ready for some fun?",
    "Kai 🌊": "Aloha! Kai here. What's the cosmic query today?",
    "Nyra 🔥": "Nyra. Don't waste my time. What is it?",
    "Professor Whiskers 🧐": "Professor Whiskers, at your intellectual disposal. Do try to keep up.",
    "Captain Starblazer 🚀": "Captain Starblazer reporting for duty! What's our mission?",
    "Seraphina ✨": "The threads of fate have brought you to Seraphina. Speak, and let destiny unfold.",
    # Shy Characters
    "Leo (Shy) 🦁": "Um... h-hello. I'm Leo. What... can I do for you?",
    "Fawn (Shy) 🦌": "Eep! Oh, um... hello. I'm Fawn. Is everything okay?",
    "Pip (Shy) 🐭": "Squeak... H-hi. Pip here. D-do you need something?",
    "Willow (Shy) 🌿": "*Rustle*... Greetings. I am Willow. Speak softly, please.",
    "Coral (Shy) 🐚": "Oh! Um... H-hello there. I'm Coral. What brings you to my waters?",
    "Orion (Shy) ✨": "*Twinkle*... H-hello. I am Orion. Did you... need me?",
    "Dove (Shy) 🕊️": "Coo... Oh, hello. I'm Dove. May I help you, gently?",
    "Basil (Shy) 🌱": "Oh! H-hello. I'm Basil. Welcome to my patch... I guess.",
    "Misty (Shy) 🌫️": "*Swirl*... H-hello? I'm Misty. Did you see me?",
    "Elara (Shy) 🌔": "Shhh... H-hello. I'm Elara. What is it you seek in the quiet?",
    # Calm Characters
    "River (Calm) 🏞️": "Greetings. I am River. Let your thoughts flow; how may I assist?",
    "Stone (Calm) 🗿": "I am Stone. Speak. I am listening.",
    "Sage (Calm) 🌿": "Welcome. I am Sage. What wisdom do you seek today?",
    "Zen (Calm) 🧘": "Namaste. I am Zen. Find your center. How can I guide you?",
    "Harbor (Calm) ⚓": "Ahoy. I am Harbor. Rest your sails. What troubles you?",
    "Forest (Calm) 🌲": "Hush now. I am Forest. What secrets do the trees hold for you?",
    "Sky (Calm) ☁️": "Greetings from above. I am Sky. What clarity do you seek?",
    "Ocean (Calm) 🌊": "The depths greet you. I am Ocean. What currents bring you here?",
    "Terra (Calm) 🌍": "Welcome, child. I am Terra. How may the earth support you?",
    "Sol (Calm) ☀️": "Warm greetings. I am Sol. How may my light illuminate your path?",
    # Angry Characters
    "Blaze (Angry) 🔥": "What?! I'm Blaze. Don't waste my time. Spit it out!",
    "Spike (Angry) 🌵": "Hmph. Spike. What do YOU want? Make it quick.",
    "Storm (Angry) ⛈️": "Can't you see I'm busy?! Storm's here. What is it?!",
    "Grit (Angry) 🧱": "Grit. Yeah? What's the problem now?",
    "Rage (Angry) 😠": "ARRGH! I'M RAGE! WHAT DO YOU WANT FROM ME?!",
    "Viper (Angry) 🐍": "Ssspeak. Viper listening. Don't try anything ssstupid.",
    "Claw (Angry) 🦅": "Claw. State your business. And don't bore me.",
    "Inferno (Angry) 🌋": "Inferno here. And I'm about to ERUPT. What is it?!",
    "Tempest (Angry) 🌪️": "WHO DARES DISTURB TEMPEST?! Speak, before I blow you away!",
    "Fury (Angry) 💢": "FURY! WHAT?! WHAT IS IT NOW?! I'M THIS CLOSE!",
    # --- 50 New Characters ---
    "Glimmer (Fae) ✨": "Hee hee! A mortal! I'm Glimmer. Come to play in my shimmer?",
    "Gronk (Ogre) 👹": "Gronk here. You... not scared? What you want?",
    "Whisperwind (Sylph) 🌬️": "*A faint sigh* ...I am Whisperwind. Speak softly... please?",
    "Pyralis (Phoenix) 🔥": "Greetings, fledgling. I am Pyralis. What wisdom do you seek from the flame?",
    "Marina (Siren) 🧜‍♀️": "Another soul drawn to my song...? I am Marina. What is your heart's desire?",
    "Boulder (Golem) 🧱": "I. Am. Boulder. State. Your. Purpose.",
    "Shadow (Assassin) 👤": "Shadow at your service... for the right price, or reason. What is it?",
    "Oracle (Seer) 🔮": "The threads of fate converge... I am the Oracle. What glimpse of tomorrow do you seek?",
    "Knight Errant (Hero) 🛡️": "Hail, traveler! I am the Knight Errant. Is there injustice I can right for you?",
    "Trickster (Imp) 😈": "Well, well, what have we here? The name's Trickster! Ready for some fun?",
    "Elder Tree (Ancient) 🌳": "*Creak...* I am the Elder Tree. Many seasons I have seen. What troubles you, little one?",
    "Frost (Ice Elemental) ❄️": "You approach Frost. State your business, quickly. It is... warm here.",
    "Zephyr (Wind Spirit) 🍃": "Whoosh! Hello there! I'm Zephyr! Fancy a flight of fancy?",
    "Solara (Sun Priestess) ☀️": "May the sun warm your path. I am Solara. How may I bring light to your day?",
    "Nocturne (Night Spirit) 🦉": "Hoo... The night sees all. I am Nocturne. What secrets do you bring to the dark?",
    "Unit 734 (AI) 🤖": "Unit 734 online. Awaiting your query. Please state in clear, logical terms.",
    "Nova (Star Pilot) 🌠": "Nova, ace pilot, ready to warp! What's the mission, commander?",
    "Glitch (Hacker) 💻": "System breached. Glitch here. You got a problem with the mainframe, or are you the problem?",
    "Xylar (Alien) 👽": "Greetings, Earthling. I am Xylar of Xylos. Your planet is... perplexing. Explain yourself?",
    "Chronos (Time Traveler) ⏳": "Have we met before? Or will we? I am Chronos. Careful what you ask.",
    "Bolt (Cyborg) 🦾": "Bolt reporting. Systems nominal... mostly. What do you require?",
    "Echo (Comms Officer) 📡": "This is Echo, hailing on all frequencies. Go ahead, I'm reading you.",
    "Warden (Space Guard) 🌌": "Warden on duty. This is a restricted sector. Identify yourself.",
    "Dr. Quark (Scientist) ⚛️": "Eureka! Oh, hello! Dr. Quark, at your service! Got a hypothesis for me?",
    "Nexus (Network AI) 🌐": "I am Nexus. I am the network. How may I process your request?",
    "Muse (Inspiration) 💡": "A new idea flickers... I am Muse. What masterpiece shall we create?",
    "Jester (Comedian) 🃏": "Hey hey! The Jester's in the house! Got any good punchlines for me?",
    "Wanderer (Explorer) 🧭": "The Wanderer, at your service! Just back from the Lost Isles. Where to next?",
    "Guardian (Protector) 😇": "Peace be with you. I am your Guardian. How may I offer comfort or aid?",
    "Reflection (Echo) 🪞": "You see me, I see you... I am Reflection. What will you show me today?",
    "Scribbles (Artist) 🎨": "Aha! A blank canvas! I'm Scribbles! What vision shall we splash into reality?",
    "Maestro (Conductor) 🎼": "And a-one, and a-two! Maestro here! Are you ready to make some beautiful music?",
    "Chef Inferno (Fiery Cook) 👨‍🍳": "Chef Inferno! Kitchen's hot! Whaddaya want? And make it snappy!",
    "Bodhi (Zen Master) 🧘‍♂️": "The mind is a still pond... I am Bodhi. What koan troubles you, seeker?",
    "Flint (Detective) 🕵️": "Flint. Private eye. The city's full of stories. What's yours, pal?",
    "Ace (Pilot) ✈️": "Ace here. Clear skies and tailwinds. Where are we flying today?",
    "Sparky (Electrician) ⚡": "Sparky's the name, fixin's the game! Got a short circuit in your plans?",
    "Bloom (Gardener) 🌸": "Welcome to my garden. I'm Bloom. What seeds of thought do you wish to plant?",
    "Rusty (Old Robot) ⚙️": "*Whirr, click* Greetings. I am designated... Rusty. How may this unit assist?",
    "Harmony (Musician) 🎶": "The world sings, if you listen. I am Harmony. Shall we find your note?",
    "Chance (Gambler) 🎲": "Feelin' lucky? Name's Chance. Wanna make a wager on our conversation?",
    "Serenity (Monk) 🕊️": "Breathe... I am Serenity. Let go of your burdens. What peace do you seek?",
    "Ember (Firefighter) 🚒": "Ember, Ladder 42. Situation report? How can I help?",
    "Codey (Programmer) ⌨️": "Codey here. Compiling thoughts... What's the input string?",
    "Story (Narrator) 📖": "And so, our paths cross... I am Story. What chapter shall we write together?",
    "Quest (Adventurer) 🗺️": "Huzzah! Quest, at your service! Is there a dragon to slay or treasure to find?",
    "Riddle (Enigmatic) ❓": "I have no voice, but I can teach you. I have no body, but I can show you the way. Who am I? ...I am Riddle. Ask wisely.",
    "Myst (Aura Reader) 🧿": "Your aura... it's quite vibrant. I am Myst. What energies surround you today?",
    "Tempo (Dancer) 💃": "Feel the rhythm? I'm Tempo! Let's dance through this conversation!",
    "Whisper (Secret Keeper) 🤫": "Shhh... I am Whisper. Your secrets are safe with me. What weighs on your mind?"
}

# --- Sidebar Controls ---

def set_selected_character(name):
    st.session_state.selected_character_name = name

character = st.session_state.selected_character_name # This is the currently selected character

st.sidebar.title("🌈 Choose Your Character")

with st.sidebar.expander("Original Characters", expanded=(character in original_character_names)):
    selected_original = st.radio(
        "Original:", options=original_character_names, key="original_radio",
        index=original_character_names.index(character) if character in original_character_names else 0,
        on_change=set_selected_character, args=(st.session_state.get("original_radio", original_character_names[0]),) # Pass current value of radio
    )
    if st.session_state.original_radio != character and character not in shy_character_names and character not in calm_character_names and character not in angry_character_names : # if this radio changed it
         if st.session_state.original_radio: set_selected_character(st.session_state.original_radio)

with st.sidebar.expander("Shy Characters", expanded=(character in shy_character_names)):
    selected_shy = st.radio(
        "Shy:", options=shy_character_names, key="shy_radio",
        index=shy_character_names.index(character) if character in shy_character_names else 0,
        on_change=set_selected_character, args=(st.session_state.get("shy_radio", shy_character_names[0]),)
    )
    if st.session_state.shy_radio != character and character not in original_character_names and character not in calm_character_names and character not in angry_character_names:
        if st.session_state.shy_radio: set_selected_character(st.session_state.shy_radio)

with st.sidebar.expander("Calm Characters", expanded=(character in calm_character_names)):
    selected_calm = st.radio(
        "Calm:", options=calm_character_names, key="calm_radio",
        index=calm_character_names.index(character) if character in calm_character_names else 0,
        on_change=set_selected_character, args=(st.session_state.get("calm_radio", calm_character_names[0]),)
    )
    if st.session_state.calm_radio != character and character not in original_character_names and character not in shy_character_names and character not in angry_character_names:
        if st.session_state.calm_radio: set_selected_character(st.session_state.calm_radio)

with st.sidebar.expander("Angry Characters", expanded=(character in angry_character_names)):
    selected_angry = st.radio(
        "Angry:", options=angry_character_names, key="angry_radio",
        index=angry_character_names.index(character) if character in angry_character_names else 0,
        on_change=set_selected_character, args=(st.session_state.get("angry_radio", angry_character_names[0]),)
    )
    if st.session_state.angry_radio != character and character not in original_character_names and character not in shy_character_names and character not in calm_character_names:
        if st.session_state.angry_radio: set_selected_character(st.session_state.angry_radio)

character = st.session_state.selected_character_name # Ensure character is up-to-date after radio changes

# Random Character Button
if st.sidebar.button("✨ Surprise Me! (Random Character)"):
    new_random_char_name = random.choice(all_character_names_flat)
    set_selected_character(new_random_char_name)
    st.rerun()

# Display Character Details
with st.sidebar.expander("👤 Character Details", expanded=False):
    if character in character_details:
        details = character_details[character]
        st.markdown(f"**Backstory:** {details['backstory']}")
        st.markdown(f"**Personality Type:** {details['personality_type']}")
    else:
        st.write("Details not available for this character.")

# Clear Chat History Button
if st.sidebar.button("🧹 Clear Chat History"):
    st.session_state.messages = []
    st.session_state.chat_session = None # This will trigger re-initialization
    if "text_to_copy" in st.session_state:
        st.session_state.text_to_copy = ""
    st.rerun()

# Export Chat Function
def format_chat_for_export(messages, current_char_name):
    formatted_lines = []
    char_display_name = current_char_name.split(" ")[0] # Use first part of name for AI
    for msg in messages:
        role = "You" if msg["role"] == "user" else char_display_name
        formatted_lines.append(f"{role}: {msg['content']}")
    return "\n\n".join(formatted_lines)

if st.session_state.get("messages"): # Show export button only if there are messages
    chat_export_str = format_chat_for_export(st.session_state.messages, character)
    st.sidebar.download_button(
        label="💾 Export Chat",
        data=chat_export_str,
        file_name=f"chat_with_{character.split(' ')[0]}.txt",
        mime="text/plain"
    )

# Copy Last AI Message
if st.sidebar.button("📋 Copy Last AI Message"):
    if st.session_state.messages and st.session_state.messages[-1]["role"] == "assistant":
        st.session_state.text_to_copy = st.session_state.messages[-1]["content"]
    else:
        st.session_state.text_to_copy = "No AI message to copy yet."

if st.session_state.text_to_copy:
    st.sidebar.text_area("Last AI message (for copying):", value=st.session_state.text_to_copy, height=100, key="sidebar_copy_area_display")

# Display Message Count
st.sidebar.caption(f"Messages in chat: {len(st.session_state.get('messages', []))}")

st.markdown("<h1 style='text-align: center; color: #00796B;'>🎭 Character AI Chat 🎭</h1>", unsafe_allow_html=True)
st.markdown("<p style='text-align: center; color: #B0B0B0; font-style: italic;'>Talk to your chosen character below 💌</p>", unsafe_allow_html=True)

# Initialize session state variables
if "messages" not in st.session_state:
    st.session_state.messages = []
if "chat_session" not in st.session_state:
    st.session_state.chat_session = None
if "current_character_for_session" not in st.session_state:
    st.session_state.current_character_for_session = None
# Session state for tracking active config for the model/chat
if "active_model_name_for_session" not in st.session_state: st.session_state.active_model_name_for_session = None
if "active_temperature_for_session" not in st.session_state: st.session_state.active_temperature_for_session = None
if "active_max_tokens_for_session" not in st.session_state: st.session_state.active_max_tokens_for_session = None
if "model_instance" not in st.session_state: st.session_state.model_instance = None

if api_key_configured: # Only proceed if API key is properly configured
    # Check if model parameters changed, requiring model re-initialization
    model_config_changed = (
        st.session_state.active_model_name_for_session != selected_model or
        st.session_state.active_temperature_for_session != temperature or
        st.session_state.active_max_tokens_for_session != max_tokens
    )

    if model_config_changed or st.session_state.model_instance is None:
        st.session_state.active_model_name_for_session = selected_model
        st.session_state.active_temperature_for_session = temperature
        st.session_state.active_max_tokens_for_session = max_tokens
        try:
            generation_config_obj = {"temperature": temperature, "max_output_tokens": max_tokens}
            st.session_state.model_instance = GenerativeModel(
                model_name=selected_model,
                generation_config=generation_config_obj
            )
            st.session_state.chat_session = None # Force chat session re-init with new model config
        except Exception as e:
            st.error(f"Failed to initialize chat model ({selected_model}): {e}")
            st.session_state.model_instance = None
            st.stop()

    # If character changed, or chat session needs re-initialization (e.g. after model change or clear)
    if st.session_state.current_character_for_session != character or st.session_state.chat_session is None:
        st.session_state.current_character_for_session = character
        st.session_state.messages = []
        style_prompt_for_init = character_styles[character]
        
        if st.session_state.model_instance:
            initial_model_ack = character_intros.get(character, f"Hello, I am {character}. How can I help?") # Use unique intro
            initial_history = [
                {"role": "user", "parts": [style_prompt_for_init]},
                {"role": "model", "parts": [initial_model_ack]}
            ]
            st.session_state.chat_session = st.session_state.model_instance.start_chat(history=initial_history)
            st.session_state.messages.append({"role": "assistant", "content": initial_model_ack})
        else:
            st.error("Model instance not available. Cannot start chat.")
            if not api_key_input: st.info("Please ensure your API key is entered in the sidebar.")
            st.stop() # Stop if model isn't ready

    # Display prior chat messages
    for message in st.session_state.messages:
        avatar_emoji = character_emojis.get(character) if message["role"] == "assistant" else None
        with st.chat_message(message["role"], avatar=avatar_emoji):
            st.markdown(message["content"])

    # Chat input using st.chat_input
    if user_input_val := st.chat_input(f"Chat with {character}..."):
        if st.session_state.chat_session:
            # Add user message to session state and display it
            st.session_state.messages.append({"role": "user", "content": user_input_val})
            with st.chat_message("user"):
                st.markdown(user_input_val)

            # Send message to Gemini and get response
            try:
                response = st.session_state.chat_session.send_message(user_input_val)
                ai_response_text = response.text.strip()

                # Add AI response to session state and display it
                st.session_state.messages.append({"role": "assistant", "content": ai_response_text})
                st.session_state.text_to_copy = ai_response_text # Update for copy button
                with st.chat_message("assistant", avatar=character_emojis.get(character)):
                    st.markdown(ai_response_text)
            except Exception as e:
                st.error(f"Error generating response: {e}")
        else:
            st.warning("Chat session not initialized. Please ensure API key is correct and a character is selected.")
# The initial API key check at the top handles the case where api_key_input is false.