:root{
    --color1: #3a97bb;
    --color1b: #116d91;
    --color2: #212121;
    --color3: #414141;
    --color4: #f5f5f5;
    --color5: #ffffff;
    --color6: #e1ecf4;
    --color7: #d1f7d6;
}

/* Reset básico */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background: var(--color4);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

/* Contenedor principal del chat */
.chat-container {
    width: 100%;
    max-width: 400px;
    height: 500px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 30px rgba(0,0,0,.1);
    background-color: var(--color5);
    display: flex;
    flex-direction: column;
}

/* Encabezado */
.chat-header {
    background: linear-gradient(135deg, var(--color1), var(--color1b));
    color: var(--color5);
    padding: 20px 15px;
    font-size: 16px;
    text-align: left;
    font-weight: 400;
}

.chat-header span{
      width: 10px;
      height: 10px;
      display: inline-block;
      background-color: #080;
      border-radius: 50px;
      margin:0 0 0 10px;
      box-shadow: 0 0 0 3px var(--color5);
}

.chat-header em{
      font-size: 12px;
      font-style: normal;
      font-weight: 400;
      margin:0 0 0 10px;
}

/* Zona de mensajes */
.chat-messages {
    flex: 1;
    padding: 15px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.chat-messages {
  flex: 1;
  padding: 15px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;

  /* Para Firefox */
  scrollbar-width: thin;
  scrollbar-color: rgba(0,0,0,0.1) transparent;
}

/* Para Chrome, Safari, Edge */
.chat-messages::-webkit-scrollbar {
  width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
  background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
  background-color: rgba(0, 0, 0, 0.1);
  border-radius: 6px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
  background-color: rgba(0, 0, 0, 0.2);
}


/* Mensajes del bot */
.bot-message {
    align-self: flex-start;
    background-color: #e1ecf4;
    color: var(--color2);
    padding: 10px 14px;
    border-radius: 10px;
    max-width: 85%;
    font-size: 14px;
}

/* Mensajes del usuario */
.user-message {
    align-self: flex-end;
    background-color: var(--color7);
    color: var(--color3);
    padding: 10px 14px;
    border-radius: 10px;
    max-width: 85%;
    font-size: 14px;
}

/* Input y botón */
.chat-input-area {
    display: flex;
    padding: 0px;
    border-top: 1px solid var(--color5);
}

.chat-messages a{
    color: var(--color1);
    font-weight: 900;
}

#user-input {
    flex: 1;
    padding: 20px 20px;
    border-radius: 8px;
    border: none;
    font-size: 14px;
    outline: none;
}

#send-button {
    background-color: transparent;
    color: var(--color2);
    border: none;
    padding: 20px 15px;
    outline: none;
    margin-left: 8px;
    font-size: 14px;
    cursor: pointer;
    font-weight: bold;
    transition: background-color .3s ease;
}