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

body {
  font-family: 'Segoe UI', sans-serif;
  background: #0f0f1a;
  color: #e8e8f0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
}

header {
  text-align: center;
  margin-bottom: 30px;
  padding-top: 20px;
}

.logo {
  font-size: 2rem;
  font-weight: 700;
  color: #7c6af7;
}

.tagline {
  font-size: 0.9rem;
  color: #888;
  margin-top: 5px;
}

.setup-panel {
  background: #1a1a2e;
  border: 1px solid #2a2a4a;
  border-radius: 16px;
  padding: 30px;
  width: 100%;
  max-width: 520px;
  text-align: center;
}

.setup-panel h2 {
  margin-bottom: 20px;
  color: #a89cf7;
}

.selectors {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

select {
  padding: 12px;
  border-radius: 8px;
  border: 1px solid #3a3a5a;
  background: #0f0f1a;
  color: #e8e8f0;
  font-size: 1rem;
}

button {
  background: #7c6af7;
  color: white;
  border: none;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s;
}

button:hover { background: #5a48d4; }

.chat-panel {
  width: 100%;
  max-width: 620px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.chat-info {
  background: #1a1a2e;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 0.85rem;
  color: #a89cf7;
  border: 1px solid #2a2a4a;
}

.chat-messages {
  background: #1a1a2e;
  border: 1px solid #2a2a4a;
  border-radius: 16px;
  padding: 20px;
  height: 380px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.message {
  padding: 12px 16px;
  border-radius: 12px;
  line-height: 1.6;
  font-size: 0.95rem;
  max-width: 85%;
}

.ai-message {
  background: #252545;
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.user-message {
  background: #7c6af7;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.loading {
  background: #252545;
  align-self: flex-start;
  color: #888;
  font-style: italic;
}

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

textarea {
  flex: 1;
  padding: 12px;
  border-radius: 8px;
  border: 1px solid #3a3a5a;
  background: #1a1a2e;
  color: #e8e8f0;
  font-size: 0.95rem;
  resize: none;
}

.reset-btn {
  background: transparent;
  border: 1px solid #3a3a5a;
  color: #888;
  font-size: 0.85rem;
  padding: 8px;
}

.hidden { display: none !important; }
.api-key-input {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.api-key-input input {
  padding: 12px;
  border-radius: 8px;
  border: 1px solid #3a3a5a;
  background: #0f0f1a;
  color: #e8e8f0;
  font-size: 0.95rem;
}