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

body {
  background: #4b9bd8;
  font-family: 'Segoe UI', sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

h1 {
  color: #fff;
  text-align: center;
  margin-bottom: 1.2rem;
  font-size: 1.5rem;
  font-weight: 700;
}
#nextBtn {
  width: 100%;
  padding: 0.75rem;
  background: #2563eb;
  color: white;
  border: none;
  font-size: 1rem;
  cursor: pointer;
}

#nextBtn:disabled {
  background: #94a3b8;
  cursor: not-allowed;
}

/* Input area styles */
.input-container {
  display: flex;
  margin: 1rem 0 0 0;
}

.input-container input[type="text"] {
  flex: 1;
  padding: 0.5rem;
  font-size: 1rem;
  border: 1px solid #ccd0d5;
  border-radius: 6px 0 0 6px;
  outline: none;
  transition: border 0.2s;
}
.input-container input[type="text"]:focus {
  border: 1.5px solid #2563eb;
}

.input-container button {
  padding: 0.5rem 1rem;
  font-size: 1rem;
  border: 1px solid #2563eb;
  background: #2563eb;
  color: white;
  border-radius: 0 6px 6px 0;
  cursor: pointer;
  transition: background 0.2s;
}
.input-container button:disabled {
  background: #94a3b8;
  cursor: not-allowed;
}

/* Chat */
.chat-container {
  width: 360px;
  border: 1px solid #ccd0d5;
  border-radius: 8px;
  background: #fff;
  box-shadow: 2px 4px 12px rgba(0,0,0,0.1);
  overflow: hidden;
}

.chat-window {
  padding: 1rem;
  height: 400px;
  overflow-y: auto;
  background: #f9fafb;
  display: flex;
  flex-direction: column;
  font-size: 0.97rem;
}

.message {
  max-width: 80%;
  margin-bottom: 0.65rem;
  padding: 0.4rem 0.65rem;
  border-radius: 12px;
  opacity: 0;
  animation: fadeIn 0.3s forwards;
  font-size: 0.97rem;
}

.message.bot {
  background: #dbeafe;
  color: #222;
  align-self: flex-start;
}

.message.user {
  background: #bbf7d0;
  color: #222;
  align-self: flex-end;
}

#nextBtn {
  width: 100%;
  padding: 0.75rem;
  background: #2563eb;
  color: white;
  border: none;
  font-size: 1rem;
  cursor: pointer;
}

#nextBtn:disabled {
  background: #94a3b8;
  cursor: not-allowed;
}

@keyframes fadeIn {
  to { opacity: 1; }
}