/* Global Styles */
:root {
    --primary-color: #2563eb;
    --background-color: #ffffff;
    --text-color: #1e293b;
    --border-color: #e2e8f0;
    --hover-color: #1d4ed8;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-family);
    color: var(--text-color);
    background-color: var(--background-color);
    line-height: 1.5;
}

/* Header Styles */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
}

nav a {
    margin-left: 1.5rem;
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
}

nav a:hover {
    color: var(--primary-color);
}

/* Main Content Styles */
main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.chat-container {
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 2rem;
}

#chatinput {
    width: 100%;
    min-height: 150px;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-family: inherit;
    font-size: 1rem;
    resize: vertical;
}

.chat-controls {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

button {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    background-color: white;
    cursor: pointer;
    font-weight: 500;
}

button:hover {
    background-color: #f8fafc;
}

#send-button {
    background-color: var(--primary-color);
    color: white;
    border: none;
}

#send-button:hover {
    background-color: var(--hover-color);
}

.examples {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.examples button {
    width: 100%;
    padding: 1rem;
    background-color: #f8fafc;
}

/* Footer Styles */
footer {
    background-color: #f8fafc;
    padding: 2rem;
    margin-top: 4rem;
}

.footer-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-columns h4 {
    margin-bottom: 1rem;
    color: var(--text-color);
}

.footer-columns a {
    display: block;
    margin: 0.5rem 0;
    color: #64748b;
    text-decoration: none;
}

.footer-columns a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.social-links a {
    color: #64748b;
    text-decoration: none;
}

.social-links a:hover {
    color: var(--primary-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    header {
        padding: 1rem;
    }

    main {
        margin: 1rem;
    }

    .chat-container {
        margin-bottom: 1rem;
    }

    .examples {
        grid-template-columns: 1fr;
    }
}