:root {
    /* Light Mode (default) */
    --chatbot-bg: #ffffff;
    --chatbot-header-bg: #3f51b5;
    --chatbot-header-text: #ffffff;
    --chatbot-messages-bg: #f5f5f5;
    --chatbot-bot-bubble-bg: #e8eaf6;
    --chatbot-bot-bubble-text: #000000;
    --chatbot-user-bubble-bg: #3f51b5;
    --chatbot-user-bubble-text: #ffffff;
    --chatbot-input-bg: #ffffff;
    --chatbot-input-border: #ccc;
    --chatbot-input-text: #000000;
    --chatbot-code-bg: rgba(0, 0, 0, 0.07);
    --chatbot-pre-bg: #282c34;
    --chatbot-pre-text: #f8f8f2;
    --chatbot-button-bg: #3f51b5;
    --chatbot-button-text: #ffffff;
    --chatbot-link-color: #303f9f;
}

[data-md-color-scheme="slate"] {
    --chatbot-bg: #2e2e32;
    --chatbot-header-bg: #1a1a1c;
    --chatbot-header-text: #ffffff;
    --chatbot-messages-bg: #202023;
    --chatbot-bot-bubble-bg: #3d3d41;
    --chatbot-bot-bubble-text: #ffffff;
    --chatbot-user-bubble-bg: #3f51b5;
    --chatbot-user-bubble-text: #ffffff;
    --chatbot-input-bg: #2e2e32;
    --chatbot-input-border: #444;
    --chatbot-input-text: #ffffff;
    --chatbot-code-bg: rgba(255, 255, 255, 0.1);
    --chatbot-pre-bg: #1e1e20;
    --chatbot-pre-text: #d4d4d4;
    --chatbot-button-bg: #3f51b5;
    --chatbot-button-text: #ffffff;
    --chatbot-link-color: #8ab4f8;
}


#open-chat {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--chatbot-button-bg);
    color: var(--chatbot-button-text);
    font-size: 24px;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    z-index: 10000;
}

#gemini-chatbot {
    display: none;
    position: fixed;
    bottom: 90px;
    right: 20px;
    width: 90vw;
    height: 75vh;
    max-width: 420px;
    max-height: 650px;
    border-radius: 15px;
    background-color: var(--chatbot-bg);
    box-shadow: 0 5px 20px rgba(0,0,0,0.25);
    flex-direction: column;
    z-index: 9999;
    overflow: hidden;
    font-size: clamp(14px, 2.5vw, 16px);
    transition: all 0.3s ease-in-out;
}

#gemini-chatbot.fullscreen {
    width: 100%;
    height: 100%;
    max-width: 100vw;
    max-height: 100vh;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    border-radius: 0;
}

#chat-header {
    background-color: var(--chatbot-header-bg);
    color: var(--chatbot-header-text);
    padding: 10px 15px;
    font-weight: bold;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
    font-size: clamp(16px, 3vw, 18px);
}

.header-buttons {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-buttons button {
    background: none;
    border: none;
    color: var(--chatbot-header-text);
    cursor: pointer;
    opacity: 0.8;
    width: 24px;
    height: 24px;
    padding: 0;
}

.header-buttons button:hover { opacity: 1; }
.header-buttons svg { fill: currentColor; }

#chat-messages {
    flex-grow: 1;
    padding: 15px;
    overflow-y: auto;
    background-color: var(--chatbot-messages-bg);
}

#chat-input-container {
    display: flex;
    padding: 15px;
    border-top: 1px solid var(--chatbot-input-border);
    background-color: var(--chatbot-input-bg);
    flex-shrink: 0;
}

#chat-input {
    flex-grow: 1;
    border: 1px solid var(--chatbot-input-border);
    border-radius: 20px;
    padding: 10px 15px;
    font-size: 1em;
    background-color: var(--chatbot-input-bg);
    color: var(--chatbot-input-text);
}

#send-chat {
    background-color: var(--chatbot-button-bg);
    color: var(--chatbot-button-text);
    border: none;
    border-radius: 50%;
    width: 45px;
    height: 45px;
    margin-left: 10px;
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-message, .bot-message {
    margin-bottom: 12px;
    padding: 10px 15px;
    border-radius: 18px;
    max-width: 85%;
    line-height: 1.4;
    display: table;
    overflow-wrap: break-word;
    word-wrap: break-word;
    min-width: 0;
}
.bot-message p { margin: 0 0 0.5em 0; }
.bot-message p:last-child { margin-bottom: 0; }

.bot-message code {
    background-color: var(--chatbot-code-bg);
    padding: 0.15em 0.4em;
    border-radius: 4px;
    font-family: monospace;
    overflow-wrap: break-word;
    word-break: break-all;
}

.bot-message pre {
    position: relative;
    background-color: var(--chatbot-pre-bg);
    color: var(--chatbot-pre-text);
    padding: 1em;
    border-radius: 8px;
    white-space: pre-wrap;
    overflow-wrap: break-word;
    word-break: break-all;
}

.bot-message pre code {
    background-color: transparent;
    padding: 0;
    word-break: break-all;
}

.copy-code-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background-color: #555;
    color: white;
    border: 1px solid #777;
    border-radius: 5px;
    padding: 4px 8px;
    font-size: 12px;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s;
}

.bot-message pre:hover .copy-code-btn {
    opacity: 1;
}

.user-message {
    background-color: var(--chatbot-user-bubble-bg);
    color: var(--chatbot-user-bubble-text);
    margin-left: auto;
}

.bot-message {
    background-color: var(--chatbot-bot-bubble-bg);
    color: var(--chatbot-bot-bubble-text);
    margin-right: auto;
}

.bot-message a {
    color: var(--chatbot-link-color);
    text-decoration: underline;
    font-weight: 500;
}
.bot-message a:hover {
    text-decoration: none;
}