body {
    font-family: 'Segoe UI', sans-serif;
    background-color: #111;
    color: #fff;
}
.bg-tech {
    background: linear-gradient(135deg, #1f1f1f, #232931);
}
.card-title {
    color: #1a1a1a;
}
.card-text {
    color: #333;
}
form input, form textarea {
    background-color: #f4f4f4;
}
.chatbot {
    position: fixed;
    bottom: 80px;
    right: 20px;
    background-color: #202124;
    border-radius: 10px;
    box-shadow: 0 0 10px #000;
    display: none;
    width: 260px;
    padding: 15px;
    z-index: 9999;
}
.chatbot.activo {
    display: block;
}
.chat-header {
    font-weight: bold;
    margin-bottom: 10px;
}
.chat-body button {
    display: block;
    margin: 5px 0;
    background-color: #007bff;
    color: white;
    border: none;
    padding: 8px;
    width: 100%;
    border-radius: 5px;
}
.chat-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: #0d6efd;
    color: white;
    border: none;
    border-radius: 50%;
    padding: 14px;
    font-size: 20px;
    z-index: 9999;
    cursor: pointer;
}