body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f7f6;
    color: #333;
}

header {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav {
    display: flex;
    width: 100%;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
}

.menu {
    list-style: none;
    display: flex;
    gap: 1.5rem;
}

.menu a {
    color: white;
    text-decoration: none;
}

.hero {
    text-align: center;
    padding: 3rem 1rem;
    background: linear-gradient(135deg, #3498db, #2c3e50);
    color: white;
}

.chat-container {
    max-width: 800px;
    margin: 2rem auto;
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.chat-box {
    height: 300px;
    overflow-y: auto;
    border: 1px solid #ddd;
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 4px;
}

.input-area {
    display: flex;
    gap: 10px;
}

textarea {
    flex: 1;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    resize: none;
}

button {
    padding: 10px 20px;
    background-color: #27ae60;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background-color: #219150;
}

.ads-section {
    max-width: 800px;
    margin: 2rem auto;
    text-align: center;
}

footer {
    text-align: center;
    padding: 2rem;
    background-color: #2c3e50;
    color: white;
    margin-top: 3rem;
}

.footer-links a {
    color: #bdc3c7;
    margin: 0 10px;
    text-decoration: none;
}

.user-msg {
    background: #e1f5fe;
    padding: 8px;
    margin: 5px 0;
    border-radius: 5px;
    text-align: right;
}

.ai-msg {
    background: #f1f8e9;
    padding: 8px;
    margin: 5px 0;
    border-radius: 5px;
    text-align: left;
}