:root {
            --couleur-fond: #1E3A8A;
            --couleur-blanc-acier: #F0F8FF;
            --couleur-gris-acier: #B0C4DE;
            --couleur-oeil: #00FFFF;
            --couleur-chat-bg: #FFFFFF;
            --couleur-chat-bordure: #CCCCCC;
            --couleur-chat-texte: #333333;
            --couleur-bouton: #1E3A8A;
            --couleur-bouton-hover: rgb(0, 170, 255);;
        }
        @import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600&display=swap');


        body {
            font-family: 'Poppins', sans-serif;
            background-color: var(--couleur-fond);
            overflow: hidden;
            margin: 0;
            height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        #titre{
            width: 95%;
            color: white;
        }
        .robot-avion {
            position: relative;
            width: 120px;
            height: 120px;
            animation: fly 3s infinite ease-in-out;
        }

        .tete {
            width: 100px;
            height: 100px;
            background: var(--couleur-blanc-acier);
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
            border-radius: 50%;
            position: absolute;
            top: 10px;
            left: 10px;
        }

        .screen {
            position: absolute;
            width: 80px;
            height: 60px;
            background: linear-gradient(180deg, #000000 0%, #333333 100%);
            border-radius: 120px 120px 40px 40px;
            left: 10px;
            top: 5px;
            box-shadow: 0 0 10px var(--couleur-gris-acier);
        }

        .oeil {
            width: 20px;
            height: 20px;
            background: var(--couleur-oeil);
            border-radius: 50%;
            position: absolute;
            top: 25px;
            left: 15px;
            box-shadow: 0 0 10px var(--couleur-oeil);
            animation: blink 3s infinite;
            transform-origin: center;
            transition: transform 0.5s ease-in-out;
        }

        .oeil-droit {
            left: 45px;
        }

        .bouche {
            width: 140px;
            height: 20px;
            z-index: -1;
            background: var(--couleur-blanc-acier);
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
            border-radius: 20px 20px 40px 40px;
            position: absolute;
            top: 55px;
            left: -20px;
        }

        .reacteur {
            width: 30px;
            height: 30px;
            background: white;
            border-radius: 50%;
            position: absolute;
            top: 70px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
            overflow: hidden;
        }

        .reacteur img {
            width: 100%;
            height: 100%;
        }

        .reacteur-gauche {
            left: -20px;
        }

        .reacteur-droit {
            right: -20px;
        }

        .bulle {
            position: absolute;
            width: 120px;
            padding: 10px;
            background: white;
            border-radius: 10px;
            top: -50px;
            left: 50%;
            transform: translateX(-50%);
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
            text-align: center;
            font-size: 14px;
            opacity: 0;
            animation: apparition-texte 1s ease-in-out forwards 3s;
        }
        @keyframes fly {
            0%, 100% { transform: translateY(0) rotate(-2deg); }
            50% { transform: translateY(-5px) rotate(2deg); }
        }

        @keyframes blink {
            0%, 100% { height: 20px; }
            50% { height: 15px; }
        }

        @keyframes apparition-texte {
            from { opacity: 0; transform: scale(0.8); }
            to { opacity: 1; transform: scale(1); }
        }

        .chat-container {
            width: 90%;
            max-width: 400px;
            height: 350px;
            background: var(--couleur-chat-bg);
            border-radius: 15px;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
            display: flex;
            flex-direction: column;
            overflow: hidden;
            margin-top: 20px;
            border: 2px solid var(--couleur-chat-bordure);
        }

        .chat-messages {
            flex: 1;
            padding: 15px;
            overflow-y: auto;
            font-family: "Poppins", Arial, sans-serif;
            color: var(--couleur-chat-texte);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .chat-input {
            display: flex;
            padding: 10px;
            border-top: 1px solid var(--couleur-chat-bordure);
            background: var(--couleur-chat-bg);
            align-items: center;
            gap: 5px;
        }

        textarea {
            flex: 1;
            min-height: 40px;
            max-height: 120px;
            resize: vertical;
            padding: 10px;
            border-radius: 8px;
            border: 1px solid var(--couleur-chat-bordure);
            font-size: 16px;
            background-color: var(--couleur-chat-fond);
            color: var(--couleur-texte);
            outline: none;
            transition: border-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
            box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.1);
        }

        textarea:focus {
            border-color: var(--couleur-chat-bordure-active);
            box-shadow: 0px 0px 8px rgba(0, 123, 255, 0.5);
        }

        .chat-input button {
            padding: 10px 15px;
            min-height: 40px;
            max-height: 120px;
            border: none;
            background: var(--couleur-bouton);
            color: white;
            border-radius: 10px;
            cursor: pointer;
            margin-left: 5px;
            font-size: 14px;
            transition: background 0.3s;
        }

        .chat-input button:hover {
            background: var(--couleur-bouton-hover);
        }

        .chat-messages div {
            padding: 10px;
            border-radius: 10px;
            max-width: 80%;
            word-wrap: break-word;
            font-size: 14px;
        }

        .user {
            background: var(--couleur-bouton);
            color: white;
            align-self: flex-end;
        }

        .bot {
            background: var(--couleur-gris-acier);
            color: black;
            align-self: flex-start;
        }

        .typing-dots::after {
            content: "...";
            animation: typing-dots 1.5s infinite;
        }

        @keyframes typing-dots {
            0%, 20% { opacity: 0; }
            50% { opacity: 1; }
            100% { opacity: 0; }
        }

        .loading {
            font-style: italic;
            opacity: 0.8;
        }