frontend/src/App.css

/* Chat Container */
.chat-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-width: 900px;
  margin: 0 auto;
  background: var(--bg);
}

/* Chat Header */
.chat-header {
  padding: 24px;
  border-bottom: 1px solid var(--border);
  text-align: center;
  background: var(--bg);
}

.chat-header h1 {
  margin: 0 0 8px 0;
  font-size: 24px;
  color: var(--text-h);
}

.chat-header p {
  margin: 0;
  font-size: 14px;
  color: var(--text);
  opacity: 0.8;
}

/* Chat Messages Area */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.empty-state {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text);
  opacity: 0.6;
  font-size: 14px;
}

/* Message Styles */
.message {
  display: flex;
  flex-direction: column;
  max-width: 80%;
  animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.message.user {
  align-self: flex-end;
}

.message.assistant {
  align-self: flex-start;
}

.message-content {
  padding: 12px 16px;
  border-radius: 12px;
  background: var(--social-bg);
}

.message.user .message-content {
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
}

.message.assistant .message-content {
  background: var(--social-bg);
  border: 1px solid var(--border);
}

.message.assistant.escalation .message-content {
  background: #fff3cd;
  border: 1px solid #ffc107;
}

.message-role {
  display: block;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-h);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.message-content p {
  margin: 0;
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
}

/* Confidence Indicator */
.confidence-indicator {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  font-size: 13px;
}

.confidence-label {
  font-weight: 600;
  color: var(--text-h);
  margin-right: 6px;
}

.confidence-text {
  color: var(--text);
  opacity: 0.9;
}

/* Escalation Badge */
.escalation-badge {
  margin-top: 8px;
  padding: 6px 12px;
  background: #ffc107;
  color: #000;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  display: inline-block;
}

/* Loading State */
.message.loading .message-content {
  opacity: 0.7;
}

.loading-text {
  font-style: italic;
}

/* Chat Input Form */
.chat-input-form {
  display: flex;
  gap: 12px;
  padding: 24px;
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.chat-input {
  flex: 1;
  padding: 12px 16px;
  font-size: 15px;
  border: 2px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  transition: border-color 0.3s;
}

.chat-input:focus {
  outline: none;
  border-color: var(--accent);
}

.chat-input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.chat-submit {
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  border: 2px solid var(--accent-border);
  border-radius: 8px;
  background: var(--accent-bg);
  color: var(--accent);
  cursor: pointer;
  transition: all 0.3s;
}

.chat-submit:hover:not(:disabled) {
  border-color: var(--accent);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.chat-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.chat-submit:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Responsive Design */
@media (max-width: 768px) {
  .chat-header {
    padding: 16px;
  }

  .chat-header h1 {
    font-size: 20px;
  }

  .chat-messages {
    padding: 16px;
  }

  .message {
    max-width: 90%;
  }

  .chat-input-form {
    padding: 16px;
    gap: 8px;
  }

  .chat-input {
    font-size: 14px;
  }

  .chat-submit {
    padding: 12px 16px;
    font-size: 14px;
  }
}