body {
  font-family: "Segoe UI", Arial, sans-serif;
  background: linear-gradient(135deg, #f4f1ee, #e9e4f0);
  color: #3f3a4a;
  margin: 0;
  padding: 0;
}

.app-container {
  max-width: 900px;
  margin: 30px auto;
  background: #faf9fb;
  border-radius: 14px;
  box-shadow: 0 20px 40px rgba(63, 58, 74, 0.15);
  padding: 22px;
  border: 1px solid #e6e1ec;
}

header {
  border-bottom: 1px solid #e6e1ec;
  padding-bottom: 12px;
  margin-bottom: 14px;
}

header h1 {
  margin: 0;
  color: #6b5ca5; /* lavender */
  font-weight: 600;
}

header p {
  margin: 4px 0 0;
  color: #8a8199;
  font-size: 14px;
}

.chat-box {
  background: #ffffff;
  border: 1px solid #e6e1ec;
  border-radius: 10px;
  padding: 14px;
  height: 400px;
  overflow-y: auto;
  margin-bottom: 14px;
  font-size: 14px;
  box-shadow: inset 0 2px 6px rgba(0,0,0,0.04);
}

.msg-user {
  color: #7a5c3e; /* warm brown */
  margin-bottom: 8px;
  font-weight: 500;
}

.msg-agent {
  color: #5e548e; /* soft lavender */
  margin-bottom: 16px;
  white-space: pre-wrap;
}

.input-bar {
  display: flex;
  gap: 10px;
}

.input-bar input {
  flex: 1;
  padding: 11px;
  border-radius: 8px;
  border: 1px solid #d8d2e5;
  background: #ffffff;
  color: #3f3a4a;
  font-size: 14px;
}

.input-bar input::placeholder {
  color: #9b94a6;
}

.input-bar input:focus {
  outline: none;
  border-color: #b8a9dc;
  box-shadow: 0 0 0 2px rgba(184, 169, 220, 0.25);
}

.input-bar button {
  padding: 11px 20px;
  border-radius: 8px;
  border: none;
  background: linear-gradient(135deg, #b8a9dc, #a08bd3);
  color: #ffffff;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.input-bar button:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(160, 139, 211, 0.35);
}