/* Basic Styles */

:root {
    --primary-color: #007bff;
    --secondary-color: #f4f4f4;
    --bg-color: #ffffff;
    --text-color: #333;
    --ai-message-bg: #e9ecef;
    --user-message-bg: #007bff;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--secondary-color);
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}


/* Chat Container */

.chat-container {
    width: 100%;
    max-width: 700px;
    height: 90vh;
    background-color: var(--bg-color);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    margin: 20px;
}

header {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 1.5rem;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

header h1 {
    margin: 0;
    font-size: 1.5rem;
}

header p {
    margin: 0;
    font-size: 0.8rem;
    opacity: 0.9;
}


/* Chat Window */

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


/* Messages */

.message {
    padding: 0.75rem 1.25rem;
    border-radius: 18px;
    max-width: 80%;
    line-height: 1.5;
}

.message p {
    margin: 0;
}

.ai-message {
    background-color: var(--ai-message-bg);
    color: var(--text-color);
    border-bottom-left-radius: 4px;
    align-self: flex-start;
}

.user-message {
    background-color: var(--user-message-bg);
    color: white;
    border-bottom-right-radius: 4px;
    align-self: flex-end;
}

.loading-message {
    background-color: var(--ai-message-bg);
    color: #777;
    border-bottom-left-radius: 4px;
    align-self: flex-start;
    font-style: italic;
}


/* Chat Form */

footer {
    padding: 1rem;
    border-top: 1px solid #ddd;
    background-color: #f9f9f9;
}

.chat-form {
    display: flex;
    gap: 0.5rem;
}

#message-input {
    flex-grow: 1;
    border: 1px solid #ccc;
    border-radius: 20px;
    padding: 0.75rem 1rem;
    font-size: 1rem;
}

#message-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

#send-button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: background-color 0.2s;
}

#send-button:hover {
    background-color: #0056b3;
}

#send-button svg {
    width: 24px;
    height: 24px;
    transform: translateX(2px);
}