:root {
  --airbus-blue: #00205b;
  --airbus-light-blue: #005587;
  --airbus-gray: #f4f4f4;
}

body {
  background-color: #f0f2f5;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

.chat-container {
  height: 95vh;
  max-width: 700px;
  margin: 10px auto;
  display: flex;
  flex-direction: column;
  background: white;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.chat-header {
  background-color: var(--airbus-blue);
  color: white;
  padding: 15px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 10;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 15px;
  scroll-behavior: smooth;
  background-color: #ffffff;
}

.message {
  max-width: 85%;
  padding: 12px 16px;
  border-radius: 18px;
  line-height: 1.5;
  position: relative;
  word-wrap: break-word;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.bot-message {
  background-color: var(--airbus-gray);
  color: #333;
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.user-message {
  background-color: var(--airbus-light-blue);
  color: white;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.options-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
  align-self: flex-start;
  max-width: 90%;
}

.option-btn {
  background: white;
  border: 1px solid var(--airbus-light-blue);
  color: var(--airbus-light-blue);
  padding: 8px 14px;
  border-radius: 20px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
  text-align: left;
}

.option-btn:hover {
  background: var(--airbus-light-blue);
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.option-btn:active {
  transform: translateY(0);
}

.typing-indicator {
  display: none;
  padding: 10px 20px;
  font-style: italic;
  font-size: 0.8rem;
  color: #666;
}

.input-area {
  padding: 15px;
  border-top: 1px solid #eee;
  display: flex;
  gap: 10px;
  background: #f9f9f9;
}

input {
  flex: 1;
  padding: 12px 18px;
  border: 1px solid #ddd;
  border-radius: 25px;
  outline: none;
}

.send-btn {
  background-color: var(--airbus-blue);
  color: white;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}