/* CSS Styling */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600&display=swap');

:root {
    --background: #1a1a1a;
    --surface: #2c2c2c;
    --primary: #00aaff;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --border: #444444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    padding: 1rem;
}

.chat-container {
    width: 100%;
    max-width: 800px;
    height: 95vh;
    background-color: var(--surface);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.chat-header {
    padding: 1rem 1.5rem;
    background-color: rgba(0,0,0,0.2);
    border-bottom: 1px solid var(--border);
}

.chat-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.chat-header p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.chat-messages {
    flex-grow: 1;
    padding: 1.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

/* Custom Scrollbar */
.chat-messages::-webkit-scrollbar {
    width: 8px;
}
.chat-messages::-webkit-scrollbar-track {
    background: var(--surface);
}
.chat-messages::-webkit-scrollbar-thumb {
    background-color: var(--border);
    border-radius: 10px;
}

.message {
    margin-bottom: 1rem;
    max-width: 80%;
    display: flex;
    flex-direction: column;
}

.message .username {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
}

.message .bubble {
    padding: 0.8rem 1.2rem;
    border-radius: 18px;
    line-height: 1.5;
    word-wrap: break-word;
    white-space: pre-wrap; /* To preserve code formatting */
}

.message.user-message {
    align-self: flex-end;
    align-items: flex-end;
}
.message.user-message .username { color: var(--primary); }
.message.user-message .bubble {
    background-color: var(--primary);
    color: #ffffff;
    border-bottom-right-radius: 4px;
}

.message.other-message {
    align-self: flex-start;
    align-items: flex-start;
}
.message.other-message .bubble {
    background-color: #404040;
    border-bottom-left-radius: 4px;
}

.message.system-message {
    align-self: center;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-style: italic;
    max-width: 100%;
}
.message.system-message .bubble {
    background: none;
    padding: 0;
}

.chat-input-form {
    display: flex;
    padding: 1rem;
    border-top: 1px solid var(--border);
    gap: 1rem;
}

.chat-input {
    flex-grow: 1;
    background-color: #404040;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.8rem 1rem;
    color: var(--text-primary);
    font-size: 1rem;
    resize: none;
    font-family: 'Poppins', sans-serif;
}
.chat-input:focus {
    outline: none;
    border-color: var(--primary);
}

.send-button {
    background-color: var(--primary);
    border: none;
    color: white;
    padding: 0 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: background-color 0.3s;
}
.send-button:hover {
    background-color: #0088cc;
}