body {
  background: #f7f7f7;
  font-family: 'Outfit', sans-serif;
  color: #111;
  padding: 2rem;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
}

.header {
  max-width: 720px;
  width: 100%;
  text-align: left;
  margin-bottom: 2rem;
}

.brand {
  font-size: 2rem;
  font-weight: 700;
  color: #111;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.bot-icon {
  font-size: 1.8rem;
}

.motto {
  color: #555;
  font-size: 1rem;
  margin-top: 0.25rem;
}

.controls {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

select,
button {
  padding: 0.6rem 1rem;
  font-size: 1rem;
  border-radius: 8px;
  border: 1px solid #ccc;
  background-color: #fff;
  cursor: pointer;
  color: #111;
}

.chat-log {
  max-width: 720px;
  width: 100%;
  flex: 1;
  background: #fff;
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 4px 14px rgba(0,0,0,0.05);
  overflow-y: auto;
}

.message {
  padding: 1rem;
  border-radius: 10px;
  margin-bottom: 1rem;
  line-height: 1.6;
  max-width: 90%;
}

.user {
  background-color: #e0e0e0;
  align-self: flex-end;
}

.bot {
  background-color: #f1f1f1;
  align-self: flex-start;
}

footer {
  max-width: 720px;
  width: 100%;
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

textarea {
  flex: 1;
  padding: 1rem;
  font-size: 1rem;
  border: 1px solid #ccc;
  border-radius: 12px;
  background: #fff;
  resize: vertical;
}

#sendBtn,
#micBtn {
  background-color: #111;
  color: #fff;
  border: none;
  font-weight: bold;
  border-radius: 10px;
  padding: 0 1rem;
  min-width: 48px;
  min-height: 48px;
}

#pro-upgrade-section {
  margin-top: 3rem;
  text-align: center;
  max-width: 600px;
}

.dark {
  background: #111;
  color: #f7f7f7;
}

.dark .chat-log {
  background: #1c1c1c;
}

.dark .user {
  background-color: #2d2d2d;
}

.dark .bot {
  background-color: #333;
}