/* ============================
   TUNLEY — Chat Area Styles
   ============================ */

.chat-container {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-width: calc(100vw - var(--sidebar-width));
  background: var(--tunley-bg);
}

/* Messages Area */
.messages-area {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
  width: 100%;
}

.messages-area .welcome {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--tunley-text-muted);
  text-align: center;
  padding: 40px;
}

.messages-area .welcome .welcome-icon {
  width: auto;
  height: auto;
  padding: 16px 28px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--tunley-accent), #9d91f8);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 2px;
  color: #fff;
  margin-bottom: 16px;
  box-shadow: 0 0 60px rgba(124, 110, 247, 0.3);
}

.messages-area .welcome h2 {
  color: var(--tunley-text);
  font-size: 24px;
  font-weight: 600;
}

.messages-area .welcome p {
  max-width: 400px;
  line-height: 1.6;
}

/* Message Bubble */
.message {
  max-width: 85%;
  animation: messageIn 0.3s ease;
  min-width: 0;
}

.message.user {
  max-width: 85%;
}

@keyframes messageIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

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

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

.message .message-content {
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  font-size: 14px;
  line-height: 1.7;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.message.user .message-content {
  background: var(--tunley-accent);
  color: #fff;
  border-bottom-right-radius: 4px;
}

.message.assistant .message-content {
  background: var(--tunley-surface);
  border: 1px solid var(--tunley-border);
  border-bottom-left-radius: 4px;
}

.message .message-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 4px 0;
  font-size: 11px;
  color: var(--tunley-text-muted);
}

.message.user .message-meta {
  justify-content: flex-end;
}

/* Markdown styling in messages */
.message .message-content h1,
.message .message-content h2,
.message .message-content h3 {
  margin: 12px 0 6px;
  font-weight: 600;
}

.message .message-content h1 { font-size: 18px; }
.message .message-content h2 { font-size: 16px; }
.message .message-content h3 { font-size: 15px; }

/* Professional heading styles matching manusagentic.md specs */
.message .message-content > h1 {
  font-size: 14pt;
  font-weight: bold;
  text-align: center;
  margin: 12px 0;
}

.message .message-content > h2 {
  font-size: 13pt;
  font-weight: bold;
  margin: 10px 0 5px 0;
}

.message .message-content > p {
  font-size: 12pt;
  line-height: 1.5;
  margin: 0 0 12px 0;
}

.message .message-content > h2.references-heading {
  font-size: 13pt;
  font-weight: bold;
  margin-top: 20px;
}

.message .message-content p {
  margin-bottom: 8px;
}

.message .message-content ul,
.message .message-content ol {
  margin: 8px 0;
  padding-left: 20px;
}

.message .message-content li {
  margin-bottom: 4px;
}

.message .message-content code {
  background: rgba(0, 0, 0, 0.3);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
}

.message .message-content pre {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--tunley-border);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin: 8px 0;
  overflow-x: auto;
}

.message .message-content pre code {
  background: none;
  padding: 0;
}

.message .message-content blockquote {
  border-left: 3px solid var(--tunley-accent);
  padding-left: 12px;
  margin: 8px 0;
  color: var(--tunley-text-muted);
}

.message .message-content a {
  color: var(--tunley-accent-glow);
  text-decoration: underline;
}

.message .message-content img {
  max-width: 100%;
  border-radius: var(--radius-sm);
  margin: 8px 0;
}

.message .message-content table {
  border-collapse: collapse;
  margin: 8px 0;
  width: 100%;
}

.message .message-content th,
.message .message-content td {
  border: 1px solid var(--tunley-border);
  padding: 6px 12px;
  text-align: left;
}

.message .message-content th {
  background: var(--tunley-surface-2);
  font-weight: 600;
}

/* Agent Step in Chat */
.agent-step {
  align-self: flex-start;
  width: 100%;
  padding: 10px 16px;
  margin-bottom: 4px;
  background: var(--tunley-surface);
  border: 1px solid var(--tunley-border);
  border-left: 3px solid var(--tunley-amber);
  border-radius: var(--radius-sm);
  font-size: 13px;
  animation: messageIn 0.3s ease;
}

.agent-step .step-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  margin-bottom: 4px;
}

.agent-step .step-header .step-icon {
  font-size: 14px;
}

.agent-step .step-detail {
  color: var(--tunley-text-muted);
  font-size: 12px;
  margin-top: 4px;
}

.agent-step.done {
  border-left-color: var(--tunley-green);
}

.agent-step.failed {
  border-left-color: var(--tunley-red);
}

/* Typing Indicator */
.typing-indicator {
  align-self: flex-start;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 16px;
  background: var(--tunley-surface);
  border: 1px solid var(--tunley-border);
  border-radius: var(--radius-lg);
  border-bottom-left-radius: 4px;
  animation: messageIn 0.3s ease;
}

.typing-indicator .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--tunley-text-muted);
  animation: typing 1.4s infinite;
}

.typing-indicator .dot:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator .dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
  0%, 60%, 100% { opacity: 0.3; transform: scale(0.8); }
  30% { opacity: 1; transform: scale(1); }
}

/* Input Area */
.input-area {
  padding: 12px 20px 16px;
  border-top: 1px solid var(--tunley-border);
  background: var(--tunley-sidebar);
  min-width: 0;
  width: 100%;
}

.input-container {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  background: var(--tunley-surface);
  border: 1px solid var(--tunley-border);
  border-radius: var(--radius-lg);
  padding: 4px 4px 4px 16px;
  transition: var(--transition);
  min-width: 0;
  width: 100%;
}

.input-container:focus-within {
  border-color: var(--tunley-accent);
  box-shadow: 0 0 0 3px rgba(124, 110, 247, 0.1);
}

.input-container textarea {
  flex: 1;
  padding: 10px 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--tunley-text);
  background: transparent;
  border: none;
  resize: none;
  max-height: 200px;
}

.input-container textarea::placeholder {
  color: var(--tunley-text-muted);
}

.input-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  flex-shrink: 0;
}

.input-actions button:not(.agent-mode-toggle):not(.research-btn) {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--tunley-text-muted);
  transition: var(--transition);
  flex-shrink: 0;
}

.input-actions button:hover {
  background: var(--tunley-surface-2);
  color: var(--tunley-text);
}

.input-actions .send-btn {
  background: var(--tunley-accent);
  color: #fff;
  font-size: 14px;
}

.input-actions .send-btn:hover {
  background: var(--tunley-accent-glow);
  box-shadow: 0 0 12px rgba(124, 110, 247, 0.3);
}

.input-actions .send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.input-actions .send-btn:disabled:hover {
  background: var(--tunley-accent);
  box-shadow: none;
}

/* Stop Button */
.stop-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  background: var(--tunley-danger-bg);
  color: var(--tunley-red);
  transition: var(--transition);
  flex-shrink: 0;
}

.stop-btn:hover {
  background: rgba(239, 68, 68, 0.2);
  box-shadow: 0 0 12px rgba(239, 68, 68, 0.3);
}

/* Message Action Buttons */
.message-actions {
  display: flex;
  gap: 6px;
  padding: 6px 4px 0;
  flex-wrap: wrap;
}

.msg-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 500;
  color: var(--tunley-text-muted);
  background: transparent;
  border: 1px solid var(--tunley-border);
  cursor: pointer;
  transition: var(--transition);
}

.msg-action-btn:hover {
  border-color: var(--tunley-accent);
  color: var(--tunley-accent);
  background: rgba(124, 110, 247, 0.08);
}

.msg-action-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Upload progress indicator */
.upload-progress {
  padding: 8px 12px;
  background: var(--tunley-surface);
  border: 1px solid var(--tunley-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.upload-progress .spinner {
  width: 14px;
  height: 14px;
  border: 2px solid var(--tunley-accent);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Research Button */
.research-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 500;
  color: var(--tunley-text-muted);
  background: transparent;
  border: 1px solid var(--tunley-border);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.research-btn:hover {
  border-color: var(--tunley-accent);
  color: var(--tunley-accent);
}

.research-btn.active {
  background: rgba(124, 110, 247, 0.1);
  border-color: var(--tunley-accent);
  color: var(--tunley-accent);
}

/* Agent Mode Toggle */
.agent-mode-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 500;
  color: var(--tunley-text-muted);
  background: transparent;
  border: 1px solid var(--tunley-border);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.agent-mode-toggle:hover {
  border-color: var(--tunley-amber);
  color: var(--tunley-amber);
}

.agent-mode-toggle.active {
  background: rgba(245, 158, 11, 0.1);
  border-color: var(--tunley-amber);
  color: var(--tunley-amber);
}

/* ============================
   INLINE AGENT MODE STYLES
   ============================ */

/* Agent mode activated banner */
.message .message-content .agent-activated {
  display: block;
  padding: 6px 12px;
  margin-bottom: 12px;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.08), rgba(124, 110, 247, 0.08));
  border: 1px solid var(--tunley-amber);
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  color: var(--tunley-amber);
  text-align: center;
  letter-spacing: 1px;
}

/* Agent mode section separator */
.message .message-content .agent-separator {
  display: block;
  margin: 16px 0;
  border: none;
  border-top: 1px solid var(--tunley-border);
  opacity: 0.5;
}

/* Agent mode section heading */
.message .message-content .agent-section-heading {
  display: block;
  margin: 16px 0 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--tunley-text);
  letter-spacing: 0.5px;
}

/* Agent mode execution step block */
.message .message-content .agent-step-block {
  display: block;
  margin: 8px 0;
  padding: 8px 12px;
  background: rgba(124, 110, 247, 0.04);
  border-left: 3px solid var(--tunley-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 13px;
}

.message .message-content .agent-step-block .step-action {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 12px;
  color: var(--tunley-text-muted);
  display: block;
  margin: 4px 0;
}

.message .message-content .agent-step-block .step-status-icon {
  margin-right: 4px;
}

.message .message-content .agent-step-block .step-status-ok {
  color: var(--tunley-green);
}

.message .message-content .agent-step-block .step-status-fail {
  color: var(--tunley-red);
}

.message .message-content .agent-step-block .step-status-running {
  color: var(--tunley-amber);
}

/* Result section styling */
.message .message-content .agent-result {
  display: block;
  margin: 12px 0;
  padding: 12px 16px;
  background: rgba(124, 110, 247, 0.06);
  border: 1px solid rgba(124, 110, 247, 0.15);
  border-radius: var(--radius-sm);
}

/* Sources section styling */
.message .message-content .agent-sources {
  display: block;
  margin: 12px 0;
  padding: 8px 12px;
  background: var(--tunley-surface-2);
  border-radius: var(--radius-sm);
  font-size: 13px;
}

.message .message-content .agent-sources .source-item {
  display: block;
  padding: 4px 0;
  border-bottom: 1px solid var(--tunley-border);
  font-size: 12px;
  color: var(--tunley-text-muted);
}

.message .message-content .agent-sources .source-item:last-child {
  border-bottom: none;
}

/* Replanning notice */
.message .message-content .agent-replan {
  display: block;
  margin: 10px 0;
  padding: 8px 12px;
  background: rgba(245, 158, 11, 0.08);
  border-left: 3px solid var(--tunley-amber);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 13px;
  color: var(--tunley-amber);
}

/* Error within agent mode */
.message .message-content .agent-error {
  display: block;
  margin: 8px 0;
  padding: 8px 12px;
  background: rgba(239, 68, 68, 0.08);
  border-left: 3px solid var(--tunley-red);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 13px;
  color: var(--tunley-red);
}

/* ============================
   FILE ATTACHMENT CHIP STYLES
   Like ChatGPT/Claude/DeepSeek — shows file chip above input
   ============================ */

.file-chip-container {
  display: flex;
  align-items: center;
  padding: 4px 20px 0;
  margin-bottom: 0;
}

.file-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--tunley-surface);
  border: 1px solid var(--tunley-border);
  border-radius: var(--radius-lg);
  font-size: 13px;
  animation: chipIn 0.25s ease;
  max-width: 100%;
}

@keyframes chipIn {
  from { opacity: 0; transform: translateY(6px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.file-chip .file-chip-icon {
  font-size: 16px;
  flex-shrink: 0;
}

.file-chip .file-chip-name {
  font-weight: 500;
  color: var(--tunley-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 200px;
}

.file-chip .file-chip-size {
  font-size: 11px;
  color: var(--tunley-text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

.file-chip .file-chip-remove {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--tunley-text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  margin-left: 4px;
  flex-shrink: 0;
}

.file-chip .file-chip-remove:hover {
  background: var(--tunley-danger-bg);
  color: var(--tunley-red);
}

/* ============================
   IMAGE GENERATION PLACEHOLDER
   Shows loading spinner while generating image
   ============================ */

.image-generation-placeholder {
  margin: 12px 0;
  padding: 20px;
  background: var(--tunley-surface-2);
  border: 1px solid var(--tunley-border);
  border-radius: var(--radius-lg);
  text-align: center;
  min-height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.image-gen-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--tunley-text-muted);
  font-size: 14px;
}

.image-gen-loading .spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--tunley-border);
  border-top-color: var(--tunley-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.generated-image {
  border-radius: 8px;
  box-shadow: var(--shadow-md);
  transition: transform 0.2s;
}

.generated-image:hover {
  transform: scale(1.02);
}

/* Generated Image Wrapper — For dedicated image rendering */
.generated-image-wrapper {
  margin: 12px 0;
  max-width: 512px;
}
.generated-image-wrapper .generated-image {
  width: 100%;
  border-radius: var(--radius-lg, 12px);
  display: block;
  box-shadow: var(--shadow-md);
}
.generated-image-wrapper .image-caption {
  font-size: 13px;
  color: var(--tunley-text-muted);
  margin-top: 6px;
}
.image-download-btn {
  display: inline-block;
  margin-top: 8px;
  padding: 6px 14px;
  background: var(--tunley-surface-2);
  border: 1px solid var(--tunley-border);
  border-radius: 8px;
  font-size: 12px;
  color: var(--tunley-text);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
}
.image-download-btn:hover {
  border-color: var(--tunley-accent);
  color: var(--tunley-accent);
  background: rgba(124, 110, 247, 0.08);
}