/* Conteneur principal du chat */
.chat-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 360px;
    max-height: 600px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
    border-radius: 1rem;
    overflow: hidden;
    background: #ffffff;
    font-family: sans-serif;
    z-index: 1000;
  }
  
  /* En‑tête en forme de vague */
  .chat-header {
    position: relative;
    height: 120px;
    background: #333835;
  }
  .chat-header svg {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: auto;
    display: block;
  }
  
  /* Corps du chat */
  .chat-body {
    flex: 1;
    padding: 0.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
  }
  
  /* Bulles de message */
  .user-bubble,
  .assistant-bubble {
    padding: 0.5rem 1rem;
    border-radius: 0.75rem;
    margin: 0.25rem 0;
    max-width: 80%;
    word-wrap: break-word;
    line-height: 1.4;
  }
  .user-bubble {
    background: #f1f0f0;
    align-self: flex-end;
  }
  .assistant-bubble {
    background: #e0f7fa;
    align-self: flex-start;
  }
  
  /* Zone de saisie */
  .chat-input-container {
    padding: 0.5rem;
    border-top: 1px solid #ececec;
  }
  .chat-input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #d1d1d1;
    border-radius: 0.5rem;
    outline: none;
    font-size: 1rem;
  }
  
  /* Bouton flottant */
  .chat-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: linear-gradient(135deg, #6e8efb, #a777e3);
    color: #fff;
    padding: 0.75rem 1rem;
    border: none;
    border-radius: 999px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    z-index: 1001;
  }