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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #f5f5f5;
  color: #1a1a1a;
  height: 100vh;
}

.view {
  height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Login ── */
#login-view {
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
}

.login-card {
  background: #fff;
  padding: 2.5rem;
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
  width: 100%;
  max-width: 400px;
}

.login-card h1 {
  font-size: 1.75rem;
  margin-bottom: 0.25rem;
  color: #1a1a2e;
}

.subtitle {
  color: #666;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}

#login-form input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 1rem;
  margin-bottom: 0.75rem;
  transition: border-color 0.2s;
}

#login-form input:focus {
  outline: none;
  border-color: #0f3460;
}

#login-form button {
  width: 100%;
  padding: 0.75rem;
  background: #0f3460;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s;
}

#login-form button:hover {
  background: #1a1a2e;
}

#login-form button:disabled {
  background: #999;
  cursor: not-allowed;
}

.error {
  color: #e74c3c;
  font-size: 0.85rem;
  margin-top: 0.75rem;
}

/* ── Chat ── */
#chat-view header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: #1a1a2e;
  color: #fff;
}

#chat-view header h1 {
  font-size: 1.25rem;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

#model-select {
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 0.85rem;
  cursor: pointer;
}

#model-select option {
  background: #1a1a2e;
  color: #fff;
}

#logout-btn {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff;
  padding: 0.4rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: background 0.2s;
}

#logout-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

#messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.message {
  max-width: 75%;
  padding: 0.75rem 1rem;
  border-radius: 12px;
  line-height: 1.5;
  font-size: 0.95rem;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.message.user {
  align-self: flex-end;
  background: #0f3460;
  color: #fff;
  border-bottom-right-radius: 4px;
}

.message.assistant {
  align-self: flex-start;
  background: #fff;
  border: 1px solid #e0e0e0;
  border-bottom-left-radius: 4px;
}

.message.error {
  align-self: center;
  background: #fce4ec;
  color: #c62828;
  border: 1px solid #ef9a9a;
  font-size: 0.85rem;
}

.typing {
  align-self: flex-start;
  color: #999;
  font-style: italic;
  font-size: 0.85rem;
}

.metrics {
  align-self: flex-start;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.75rem;
  color: #888;
  padding: 0.25rem 0;
  margin-top: -0.5rem;
}

.metrics span {
  background: #f0f0f0;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

#chat-form {
  display: flex;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  background: #fff;
  border-top: 1px solid #e0e0e0;
}

#prompt-input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.2s;
}

#prompt-input:focus {
  outline: none;
  border-color: #0f3460;
}

#send-btn {
  padding: 0.75rem 1.5rem;
  background: #0f3460;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s;
}

#send-btn:hover {
  background: #1a1a2e;
}

#send-btn:disabled {
  background: #999;
  cursor: not-allowed;
}