:root {
  --ei-primary: #a00842;
  --ei-primary-dark: #870638;
  --ei-bg: #ffffff;
  --ei-soft: #f7f4f6;
  --ei-border: #e5dce1;
  --ei-text: #222222;
  --ei-muted: #666666;
}

.ei-assistent-root {
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ei-text);
}

.ei-chatbot-btn {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 66px;
  height: 66px;
  background: var(--ei-primary) !important;
  color: #fff !important;
  border-radius: 50% !important;
  border: none !important;
  box-shadow: 0 10px 26px rgba(0,0,0,.28) !important;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  cursor: pointer;
  z-index: 99999;
  transition: all .2s ease;
}

.ei-chatbot-btn:hover {
  transform: translateY(-4px) scale(1.04);
  background: var(--ei-primary-dark) !important;
  box-shadow: 0 14px 32px rgba(0,0,0,.34) !important;
}

.ei-chatbot-label {
  position: fixed;
  right: 100px;
  bottom: 36px;
  background: #fff;
  color: #222;
  border: 1px solid #ddd;
  border-left: 5px solid var(--ei-primary);
  padding: 10px 15px;
  border-radius: 12px;
  box-shadow: 0 8px 22px rgba(0,0,0,.16);
  font-size: 14px;
  font-weight: 600;
  z-index: 99998;
  max-width: 240px;
}

.ei-chatbot-label span { color: var(--ei-primary); }

.ei-chatbot-window {
  width: 380px;
  max-width: calc(100vw - 32px);
  background: var(--ei-bg);
  border: 1px solid var(--ei-border);
  border-radius: 18px;
  box-shadow: 0 16px 40px rgba(0,0,0,.22);
  overflow: hidden;
  z-index: 99999;
}

.ei-mode-floating .ei-chatbot-window {
  position: fixed;
  right: 24px;
  bottom: 104px;
}

.ei-mode-inline .ei-chatbot-window {
  width: 100%;
  max-width: 760px;
  margin: 20px auto;
  box-shadow: 0 10px 28px rgba(0,0,0,.12);
}

.ei-hidden { display: none; }

.ei-chatbot-header {
  background: var(--ei-primary) !important;
  color: #fff !important;
  padding: 16px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.ei-chatbot-header strong {
  display: block;
  font-size: 17px;
  line-height: 1.2;
}

.ei-chatbot-header small {
  display: block;
  margin-top: 5px;
  font-size: 12px;
  opacity: .9;
  line-height: 1.35;
}

.ei-chatbot-close {
  background: rgba(255,255,255,.18) !important;
  color: #fff !important;
  border: none !important;
  border-radius: 50%;
  width: 30px;
  height: 30px;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}

.ei-chatbot-messages {
  height: 330px;
  overflow-y: auto;
  padding: 16px;
  background: linear-gradient(180deg, #fff 0%, var(--ei-soft) 100%);
}

.ei-msg {
  padding: 10px 12px;
  margin-bottom: 10px;
  border-radius: 14px;
  line-height: 1.4;
  white-space: pre-wrap;
  font-size: 14px;
}

.ei-msg-bot {
  background: #fff;
  border: 1px solid var(--ei-border);
  margin-right: 34px;
}

.ei-msg-user {
  background: var(--ei-primary);
  color: #fff;
  margin-left: 34px;
  text-align: left;
}

.ei-chatbot-form {
  display: flex;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid var(--ei-border);
  background: #fff;
}

.ei-chatbot-input {
  flex: 1;
  border: 1px solid var(--ei-border) !important;
  border-radius: 10px !important;
  padding: 10px 12px !important;
  font-size: 14px;
  min-width: 0;
}

.ei-chatbot-input:focus {
  outline: 2px solid rgba(160, 8, 66, .18) !important;
  border-color: var(--ei-primary) !important;
}

.ei-chatbot-send {
  background: var(--ei-primary) !important;
  color: #fff !important;
  border: none !important;
  border-radius: 10px !important;
  padding: 10px 14px !important;
  font-weight: 700;
  cursor: pointer;
}

.ei-chatbot-send:hover { background: var(--ei-primary-dark) !important; }

.ei-assistant-examens .ei-chatbot-header,
.ei-assistant-examens .ei-msg-user,
.ei-assistant-examens .ei-chatbot-send,
.ei-assistant-examens .ei-chatbot-btn {
  background: var(--ei-primary) !important;
}

@media (max-width: 768px) {
  .ei-chatbot-btn {
    right: 16px;
    bottom: 16px;
    width: 56px;
    height: 56px;
    font-size: 24px;
  }
  .ei-chatbot-label { display: none; }
  .ei-mode-floating .ei-chatbot-window {
    right: 12px;
    bottom: 84px;
    max-width: calc(100vw - 24px);
  }
  .ei-chatbot-messages { height: 300px; }
}