body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f4fdfb;
    color: #0a3d2e;
}

.hero {
    background: linear-gradient(135deg, #0c7a5c, #10a378);
    padding: 40px 20px;
    text-align: center;
    color: white;
    box-shadow: 0 0 20px rgba(0,0,0,0.3);
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 0 0 10px rgba(255,255,255,0.6);
}

.tagline {
    font-size: 1.1rem;
    opacity: 0.9;
}

.nav-buttons button {
    background: #b6f2d8;
    border: none;
    padding: 10px 18px;
    margin: 8px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    color: #064c38;
}

.nav-buttons button:hover {
    background: #d9fff0;
}

.content-section {
    padding: 20px;
    max-width: 800px;
    margin: auto;
}

.hidden {
    display: none;
}

#chat-window {
    background: white;
    border: 2px solid #0b6b53;
    border-radius: 10px;
    padding: 15px;
    height: 300px;
    overflow-y: auto;
    margin-bottom: 15px;
}

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

.chat-input input {
    flex: 1;
    padding: 10px;
    border: 2px solid #0b6b53;
    border-radius: 8px;
}

.chat-input button {
    background: #0b6b53;
    color: white;
    border: none;
    padding: 10px 18px;
    border-radius: 8px;
    cursor: pointer;
}

.chat-input button:hover {
    background: #0d8f6a;
}

.bot {
    color: #0b6b53;
    font-weight: bold;
}

.user {
    color: #064c38;
}

/* Typing animation */
.typing {
    font-style: italic;
    color: #0b6b53;
    margin-bottom: 10px;
    opacity: 0.8;
}