/* Chat Container */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100%;
  max-width: 100%;
  overflow: hidden;
  position: relative;
}

.main-header {
  display: flex;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  background-color: var(--background-primary);
  z-index: 10;
}

.main-title {
  flex: 1;
  margin: 0;
  text-align: center;
  font-size: var(--font-xl);
}

.menu-toggle {
  display: none;
}

.menu-icon {
  width: 24px;
  height: 18px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.menu-icon span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.clear-chat-btn {
  color: var(--text-secondary);
  font-size: var(--font-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.clear-chat-btn:hover {
  background-color: var(--button-bg);
}

/* Chat area */
.chat-container {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-md);
  scroll-behavior: smooth;
}

.messages {
  max-width: 768px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* Welcome screen */
.welcome-screen {
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--spacing-lg);
}

.welcome-content {
  max-width: 600px;
  width: 100%;
}

.welcome-content h2 {
  margin-bottom: var(--spacing-md);
  font-size: var(--font-2xl);
}

.welcome-content p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
}

.example-prompts {
  margin-top: var(--spacing-xl);
}

.example-prompts h3 {
  margin-bottom: var(--spacing-md);
  font-size: var(--font-lg);
}

.example-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing-md);
}

.example-btn {
  text-align: left;
  padding: var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--background-primary);
  color: var(--text-primary);
  transition: all var(--transition-fast);
  height: 100%;
  display: flex;
  align-items: center;
}

.example-btn:hover {
  background-color: var(--button-bg);
  border-color: var(--accent-primary);
}

/* Message bubbles */
.message {
  display: flex;
  flex-direction: column;
  max-width: 100%;
  animation: fadeIn var(--transition-normal);
}

.message-content {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-xs);
  position: relative;
}

.message.user .message-content {
  background-color: var(--user-message-bg);
  align-self: flex-end;
  color: var(--text-primary);
}

.message.ai .message-content {
  background-color: var(--ai-message-bg);
  align-self: flex-start;
  color: var(--text-primary);
}

.message-avatar {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-sm);
  margin-right: var(--spacing-sm);
}

.message-header {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.message-sender {
  font-weight: 600;
}

.message-time {
  font-size: var(--font-xs);
  color: var(--text-tertiary);
  margin-left: auto;
  text-align: right;
}

/* Typing indicator */
.typing-indicator {
  display: flex;
  align-items: center;
  padding: var(--spacing-md);
  margin-top: var(--spacing-md);
  border-radius: var(--radius-md);
  background-color: var(--ai-message-bg);
  max-width: 100px;
}

.typing-dot {
  width: 8px;
  height: 8px;
  background-color: var(--typing-dot-color);
  border-radius: var(--radius-full);
  margin: 0 2px;
  animation: typingAnimation 1.5s infinite ease-in-out;
}

.typing-dot:nth-child(1) {
  animation-delay: 0s;
}

.typing-dot:nth-child(2) {
  animation-delay: 0.3s;
}

.typing-dot:nth-child(3) {
  animation-delay: 0.6s;
}

/* Input area */
.input-container {
  padding: var(--spacing-md);
  border-top: 1px solid var(--border-color);
  background-color: var(--background-primary);
  margin-top: auto;
}

.chat-form {
  max-width: 768px;
  margin: 0 auto;
}

.input-wrapper {
  display: flex;
  position: relative;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background-color: var(--background-primary);
  transition: border-color var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.input-wrapper:focus-within {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-md);
}

textarea {
  flex: 1;
  padding: var(--spacing-md);
  border: none;
  outline: none;
  background: transparent;
  resize: none;
  font-family: inherit;
  font-size: var(--font-md);
  line-height: 1.5;
  color: var(--text-primary);
  max-height: 200px;
  overflow-y: auto;
}

textarea::placeholder {
  color: var(--text-tertiary);
}

.send-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm);
  color: var(--text-tertiary);
  border-radius: var(--radius-full);
  margin: var(--spacing-xs);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.send-btn:hover {
  color: var(--accent-primary);
  background-color: var(--button-bg);
}

.send-btn:disabled {
  color: var(--text-tertiary);
  cursor: not-allowed;
  background-color: transparent;
}

.disclaimer {
  text-align: center;
  font-size: var(--font-xs);
  color: var(--text-tertiary);
  margin-top: var(--spacing-sm);
  max-width: 768px;
  margin-left: auto;
  margin-right: auto;
}