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

/* Light Theme (default) */
:root {
  --bg-main: #ffffff;
  --bg-sidebar: #f9f9f9;
  --bg-user-msg: #f4f4f4;
  --bg-assistant-msg: transparent;
  --bg-input: #ffffff;
  --bg-input-wrapper: #f4f4f4;
  --text-primary: #1a1a1a;
  --text-secondary: #666666;
  --text-muted: #999999;
  --border-color: #e5e5e5;
  --border-light: #f0f0f0;
  --accent: #10a37f;
  --accent-hover: #0d8a6a;
  --error: #ef4444;
  --success: #10a37f;
  --code-bg: #1e1e1e;
  --code-header-bg: #2d2d2d;
  --code-text: #e5e5e5;
  --tool-bg: #f7f7f8;
  --tool-border: #e5e5e5;
  --tool-result-bg: #f0fdf4;
  --tool-result-border: #bbf7d0;
  --sidebar-hover: #ececec;
  --session-active: #e8e8e8;
  --inline-code-bg: rgba(0, 0, 0, 0.05);
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-main: #212121;
  --bg-sidebar: #171717;
  --bg-user-msg: #303030;
  --bg-assistant-msg: transparent;
  --bg-input: #303030;
  --bg-input-wrapper: #303030;
  --text-primary: #ececec;
  --text-secondary: #b4b4b4;
  --text-muted: #8e8e8e;
  --border-color: #3d3d3d;
  --border-light: #2d2d2d;
  --accent: #10a37f;
  --accent-hover: #1fbd92;
  --error: #f87171;
  --success: #10a37f;
  --code-bg: #0d0d0d;
  --code-header-bg: #1a1a1a;
  --code-text: #e5e5e5;
  --tool-bg: #2a2a2a;
  --tool-border: #3d3d3d;
  --tool-result-bg: rgba(16, 163, 127, 0.1);
  --tool-result-border: rgba(16, 163, 127, 0.3);
  --sidebar-hover: #2d2d2d;
  --session-active: #3a3a3a;
  --inline-code-bg: rgba(255, 255, 255, 0.1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  background: var(--bg-main);
  color: var(--text-primary);
  height: 100vh;
  overflow: hidden;
  transition: background-color 0.2s, color 0.2s;
}

#app {
  height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Login Page */
.login-page {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--bg-main);
}

.login-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px;
  width: 100%;
  max-width: 400px;
}

.login-container h1 {
  margin-bottom: 32px;
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
}

.login-container input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 16px;
  margin-bottom: 16px;
  transition: border-color 0.2s;
}

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

.login-container button {
  width: 100%;
  padding: 12px 16px;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: white;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}

.login-container button:hover {
  background: var(--accent-hover);
}

.login-container .error {
  color: var(--error);
  margin-top: 16px;
  font-size: 14px;
}

.login-container .verification-hint {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 14px;
  text-align: center;
}

.login-container .code-input {
  text-align: center;
  font-size: 24px;
  font-weight: 600;
  letter-spacing: 8px;
  font-family: 'SF Mono', Monaco, 'Courier New', monospace;
}

.login-container .back-button {
  margin-top: 12px;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.login-container .back-button:hover {
  background: var(--sidebar-hover);
  color: var(--text-primary);
}

.login-container button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* TOTP Setup Styles */
.totp-setup {
  width: 100%;
  text-align: center;
}

.totp-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.totp-hint {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 20px;
  line-height: 1.5;
}

.qr-container {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.qr-code {
  width: 200px;
  height: 200px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: white;
  padding: 8px;
}

.secret-container {
  margin-bottom: 20px;
  padding: 12px;
  background: var(--bg-sidebar);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.secret-label {
  color: var(--text-secondary);
  font-size: 12px;
  margin-bottom: 8px;
}

.secret-key {
  display: block;
  font-family: 'SF Mono', Monaco, 'Courier New', monospace;
  font-size: 14px;
  color: var(--text-primary);
  word-break: break-all;
  user-select: all;
  cursor: text;
}

/* Chat Page - Three Column Layout */
.chat-page {
  display: flex;
  height: 100vh;
}

/* Left Sidebar - Sessions */
.sidebar {
  width: 260px;
  background: var(--bg-sidebar);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.sidebar-top {
  padding: 12px;
}

/* Agent Selector at Top */
.agent-selector {
  position: relative;
  margin-bottom: 8px;
}

.agent-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
}

.agent-btn:hover {
  background: var(--sidebar-hover);
}

.agent-btn .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-secondary);
  flex-shrink: 0;
}

.agent-btn .status-dot.online {
  background: var(--success);
}

.agent-btn .agent-name {
  flex: 1;
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.agent-btn .chevron {
  width: 16px;
  height: 16px;
  fill: var(--text-secondary);
  transition: transform 0.2s;
  flex-shrink: 0;
}

.agent-btn .chevron.rotated {
  transform: rotate(180deg);
}

/* Dropdown */
.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 4px;
  background: var(--bg-main);
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  z-index: 100;
  max-height: 300px;
  overflow-y: auto;
  padding: 4px;
}

.agent-item {
  padding: 10px 12px;
  cursor: pointer;
  border-radius: 8px;
  transition: background 0.15s;
}

.agent-item:hover {
  background: var(--sidebar-hover);
}

.agent-item.selected {
  background: var(--session-active);
}

.agent-item.no-agents {
  color: var(--text-secondary);
  cursor: default;
  text-align: center;
}

.agent-item .name {
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
}

.agent-item .info {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 2px;
  margin-left: 16px;
}

.agent-item .status {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
}

.agent-item .status.online {
  background: var(--success);
}

/* New Chat Button */
.new-chat-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text-primary);
  font-size: 14px;
  cursor: pointer;
  transition: background 0.15s;
}

.new-chat-btn:hover {
  background: var(--sidebar-hover);
}

.new-chat-btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* Session List */
.session-list {
  flex: 1;
  overflow-y: auto;
  padding: 0 8px;
}

.session-group-title {
  font-size: 12px;
  color: var(--text-secondary);
  padding: 16px 12px 8px;
  font-weight: 500;
}

.session-item {
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s;
  margin-bottom: 2px;
}

.session-item:hover {
  background: var(--sidebar-hover);
}

.session-item.active {
  background: var(--session-active);
}

.session-item.processing .title {
  color: var(--accent);
}

.processing-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  margin-right: 6px;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

.session-item .title {
  font-size: 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.session-item-header {
  display: flex;
  align-items: center;
  gap: 8px;
}

.session-delete-btn {
  width: 20px;
  height: 20px;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.15s;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.session-item:hover .session-delete-btn {
  opacity: 1;
}

.session-delete-btn:hover {
  color: var(--error);
}

.session-delete-btn svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

.session-info {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

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

.empty-hint {
  padding: 16px 12px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 13px;
}

/* Sidebar Bottom */
.sidebar-bottom {
  padding: 8px;
}

.sidebar-menu-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text-primary);
  font-size: 14px;
  cursor: pointer;
  transition: background 0.15s;
}

.sidebar-menu-btn:hover {
  background: var(--sidebar-hover);
}

.sidebar-menu-btn svg {
  width: 18px;
  height: 18px;
}

/* Main Chat Area */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* Chat Header */
.chat-header {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 12px 16px;
  background: var(--bg-main);
  position: relative;
}

.chat-title {
  font-size: 16px;
  font-weight: 500;
}

.header-actions {
  position: absolute;
  right: 16px;
  display: flex;
  gap: 4px;
}

.icon-btn {
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
  color: var(--text-primary);
}

.icon-btn:hover {
  background: var(--sidebar-hover);
}

.icon-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.refresh-btn {
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
  color: var(--text-secondary);
}

.refresh-btn:hover {
  background: var(--sidebar-hover);
  color: var(--text-primary);
}

.refresh-btn:active {
  transform: rotate(180deg);
  transition: transform 0.3s;
}

/* Chat Container */
.chat-container {
  flex: 1;
  overflow-y: auto;
  padding: 24px 0;
  background: var(--bg-main);
}

.messages {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* Messages */
.message {
  line-height: 1.6;
  word-wrap: break-word;
}

.message.user {
  background: var(--bg-user-msg);
  padding: 12px 16px;
  border-radius: 18px;
  align-self: flex-end;
  max-width: 80%;
  font-size: 15px;
}

.message.assistant {
  padding: 0;
  padding-right: 40px; /* Space for copy button */
}

.message.assistant .message-content {
  color: var(--text-primary);
}

.message.system {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  padding: 8px 16px;
  background: transparent;
  border-radius: 8px;
  align-self: center;
}

.message.error {
  text-align: center;
  font-size: 13px;
  color: var(--error);
  padding: 10px 16px;
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: 8px;
  align-self: center;
}

/* Tool Messages - Compact Style */
.message.tool-use {
  background: var(--tool-bg);
  border: 1px solid var(--tool-border);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 13px;
}

.message.tool-use .tool-name {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 12px;
}

.message.tool-use .tool-input {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 10px 12px;
  border-radius: 6px;
  overflow-x: auto;
  margin: 0;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 12px;
}

.message.tool-result {
  background: var(--tool-result-bg);
  border: 1px solid var(--tool-result-border);
  border-radius: 8px;
  padding: 12px;
  font-size: 13px;
  max-height: 200px;
  overflow-y: auto;
}

.message.tool-result .tool-output {
  background: var(--code-bg);
  padding: 8px;
  border-radius: 6px;
  overflow-x: auto;
  margin: 0;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 12px;
}

/* Code Styling */
.message pre {
  background: var(--code-bg);
  padding: 16px;
  border-radius: 8px;
  overflow-x: auto;
  margin: 16px 0;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 14px;
  line-height: 1.5;
}

.message code {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

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

/* Streaming Cursor */
.cursor-blink {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--accent);
  margin-left: 2px;
  animation: blink 1s infinite;
  vertical-align: text-bottom;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

/* Typing Indicator */
.typing-indicator {
  display: flex;
  gap: 4px;
  padding: 16px 0;
}

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

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

@keyframes typing {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30% { transform: translateY(-8px); opacity: 1; }
}

/* Input Area */
.input-area {
  padding: 16px 24px 24px;
  background: var(--bg-main);
}

/* Attachments Preview */
.attachments-preview {
  max-width: 768px;
  margin: 0 auto 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.attachment-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: var(--bg-input-wrapper);
  border-radius: 8px;
  font-size: 13px;
  max-width: 200px;
}

.attachment-thumb {
  width: 32px;
  height: 32px;
  object-fit: cover;
  border-radius: 4px;
}

.attachment-icon {
  font-size: 16px;
}

.attachment-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-primary);
}

.attachment-remove {
  width: 18px;
  height: 18px;
  border: none;
  background: var(--text-secondary);
  color: var(--bg-main);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  line-height: 1;
  flex-shrink: 0;
  transition: background 0.15s;
}

.attachment-remove:hover {
  background: var(--error);
}

.input-wrapper {
  max-width: 768px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-input-wrapper);
  border-radius: 24px;
  padding: 12px 12px 12px 20px;
  min-height: 48px;
  transition: box-shadow 0.2s;
}

.input-wrapper:focus-within {
  box-shadow: 0 0 0 2px var(--accent);
}

.input-wrapper textarea {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 16px;
  resize: none;
  max-height: 120px;
  line-height: 1.5;
  font-family: inherit;
}

.input-wrapper textarea::placeholder {
  color: var(--text-secondary);
}

.input-wrapper textarea:focus {
  outline: none;
}

/* Attach Button */
.attach-btn {
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
  flex-shrink: 0;
  color: var(--text-secondary);
}

.attach-btn:hover {
  background: var(--sidebar-hover);
  color: var(--text-primary);
}

.attach-btn svg {
  fill: currentColor;
}

.send-btn {
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 50%;
  background: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.15s;
  flex-shrink: 0;
}

.send-btn:hover:not(:disabled) {
  opacity: 0.8;
}

.send-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.send-btn svg {
  width: 18px;
  height: 18px;
  fill: var(--bg-main);
}

/* Stop Button */
.send-btn.stop-btn {
  background: var(--error);
}

.send-btn.stop-btn:hover {
  background: #dc2626;
}

.send-btn.stop-btn svg {
  width: 16px;
  height: 16px;
}

/* Right Sidebar - Status Panel */
.status-panel {
  width: 260px;
  background: var(--bg-sidebar);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  padding: 16px;
}

.status-section {
  margin-bottom: 20px;
}

.status-section-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.status-item {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 13px;
}

.status-item .label {
  color: var(--text-secondary);
}

.status-item .value {
  color: var(--text-primary);
}

.status-item .value.processing {
  color: var(--accent);
}

.status-item .value.error {
  color: var(--error);
}

.status-item .value.success {
  color: var(--success);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: var(--bg-main);
  border-radius: 8px;
  font-size: 13px;
}

.status-indicator .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.status-indicator .dot.idle {
  background: var(--text-secondary);
}

.status-indicator .dot.processing {
  background: var(--accent);
  animation: pulse 1.5s infinite;
}

.status-indicator .dot.error {
  background: var(--error);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.cost-display {
  padding: 16px;
  background: var(--bg-main);
  border-radius: 8px;
  text-align: center;
}

.cost-display .amount {
  font-size: 28px;
  font-weight: 600;
  color: var(--accent);
}

.cost-display .label {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.work-dir-display {
  font-size: 12px;
  color: var(--text-primary);
  word-break: break-all;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  padding: 10px 12px;
  background: var(--bg-main);
  border-radius: 8px;
}

/* Current Tool Execution */
.current-tool {
  padding: 12px;
  background: var(--bg-main);
  border-radius: 8px;
  border-left: 3px solid var(--accent);
}

.current-tool .tool-name {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
}

.current-tool .tool-icon {
  font-size: 14px;
}

.current-tool .tool-icon.spinning {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.current-tool .tool-input {
  font-size: 11px;
  color: var(--text-secondary);
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  margin-top: 6px;
  word-break: break-all;
}

/* Tool History */
.tool-history {
  background: var(--bg-main);
  border-radius: 8px;
  padding: 8px;
  max-height: 300px;
  overflow-y: auto;
}

.tool-history-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  font-size: 12px;
  border-radius: 4px;
  transition: background 0.15s;
}

.tool-history-item:hover {
  background: var(--sidebar-hover);
}

.tool-history-item.running {
  background: var(--tool-bg);
}

.tool-history-item .tool-status-icon {
  font-size: 12px;
  flex-shrink: 0;
}

.tool-history-item .tool-name {
  flex: 1;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tool-history-item .tool-time {
  font-size: 11px;
  color: var(--text-secondary);
  flex-shrink: 0;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

/* Work directory display */
.status-item .value.work-dir {
  font-size: 11px;
  word-break: break-all;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

/* Session list empty hint */
.session-item.empty-hint {
  color: var(--text-secondary);
  cursor: default;
  font-size: 13px;
  text-align: center;
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal {
  background: var(--bg-main);
  border-radius: 12px;
  width: 90%;
  max-width: 480px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  transition: background 0.2s, color 0.2s;
}

.modal-close:hover {
  background: var(--bg-user-msg);
  color: var(--text-primary);
}

.modal-body {
  padding: 20px;
}

.modal-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.form-group input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 14px;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  transition: border-color 0.2s;
}

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

.form-group input::placeholder {
  color: var(--text-secondary);
}

.form-hint {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 6px;
}

.form-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.quick-paths {
  margin-top: 16px;
}

.path-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.path-chip {
  padding: 6px 12px;
  border: 1px solid var(--border-color);
  border-radius: 16px;
  background: var(--bg-sidebar);
  color: var(--text-primary);
  font-size: 12px;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}

.path-chip:hover {
  background: var(--bg-user-msg);
  border-color: var(--accent);
}

/* Buttons */
.btn {
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s, opacity 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: white;
  border: none;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

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

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-user-msg);
}

/* Modal Large (for history sessions) */
.modal-large {
  max-width: 600px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
}

.modal-large .modal-body {
  flex: 1;
  overflow-y: auto;
}

/* Input with button */
.input-with-button {
  display: flex;
  gap: 8px;
}

.input-with-button input {
  flex: 1;
}

.input-with-button .btn {
  white-space: nowrap;
  padding: 10px 16px;
}

/* History Sessions */
.history-sessions {
  margin-top: 20px;
}

.history-sessions-list {
  max-height: 300px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-top: 8px;
}

.history-session-item {
  padding: 12px 16px;
  cursor: pointer;
  border-bottom: 1px solid var(--border-color);
  transition: background 0.2s;
}

.history-session-item:last-child {
  border-bottom: none;
}

.history-session-item:hover {
  background: var(--sidebar-hover);
}

.history-session-item.selected {
  background: var(--session-active);
  border-left: 3px solid var(--accent);
}

.history-session-item .session-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.history-session-item .session-title {
  font-weight: 500;
  font-size: 14px;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 70%;
}

.history-session-item .session-date {
  font-size: 12px;
  color: var(--text-secondary);
}

.history-session-item .session-preview {
  font-size: 13px;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-bottom: 4px;
}

.history-session-item .session-id {
  font-size: 11px;
  color: var(--text-secondary);
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  opacity: 0.7;
}

/* History Empty */
.history-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-secondary);
}

.history-empty .empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.history-empty .empty-text {
  font-size: 14px;
}

/* Theme Toggle */
.theme-toggle {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, border-color 0.2s;
}

.theme-toggle:hover {
  background: var(--bg-user-msg);
  border-color: var(--text-secondary);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
  color: var(--text-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* Responsive */
@media (max-width: 1024px) {
  .status-panel {
    display: none;
  }
}

@media (max-width: 768px) {
  .sidebar {
    display: none;
  }

  .messages {
    padding: 0 12px;
  }

  .message.user {
    max-width: 90%;
  }

  .chat-header {
    padding: 10px 12px;
  }

  .input-area {
    padding: 12px;
  }

  .input-wrapper {
    padding: 10px 10px 10px 14px;
  }

  .input-wrapper textarea {
    font-size: 16px; /* Prevent zoom on iOS */
  }
}

/* Form Select */
.form-select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 14px;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='%236e6e80'%3E%3Cpath d='M7 10l5 5 5-5H7z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}

.form-select:focus {
  outline: none;
  border-color: var(--accent);
}

/* Form Label Row */
.form-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.form-label-row label {
  margin-bottom: 0;
}

/* Button Link */
.btn-link {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font-size: 13px;
  padding: 4px 8px;
}

.btn-link:hover {
  text-decoration: underline;
}

.btn-link:disabled {
  color: var(--text-secondary);
  cursor: not-allowed;
}

/* Folders List */
.folders-list {
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

.folder-item {
  padding: 10px 12px;
  cursor: pointer;
  border-bottom: 1px solid var(--border-color);
  transition: background 0.15s;
}

.folder-item:last-child {
  border-bottom: none;
}

.folder-item:hover {
  background: var(--sidebar-hover);
}

.folder-item.selected {
  background: var(--session-active);
}

.folder-path {
  font-size: 13px;
  font-family: 'SF Mono', Monaco, monospace;
  color: var(--text-primary);
  word-break: break-all;
}

.folder-info {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.folders-empty {
  padding: 20px;
  text-align: center;
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

.folders-empty .empty-text {
  color: var(--text-secondary);
  font-size: 13px;
}

/* Agent Status Bar */
.agent-status-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  margin-bottom: 8px;
}

.agent-status-bar .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-secondary);
  flex-shrink: 0;
}

.agent-status-bar .status-dot.online {
  background: var(--success);
}

.agent-status-bar .agent-count {
  font-size: 14px;
  color: var(--text-secondary);
}

/* Modal Wide - Two Column Layout */
.modal-wide {
  max-width: 700px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
}

.modal-wide .modal-body {
  flex: 1;
  overflow: hidden;
}

.modal-two-columns {
  display: flex;
  gap: 20px;
  height: 450px;
  max-height: calc(80vh - 120px);
}

.modal-left-column {
  flex: 0 0 260px;
  display: flex;
  flex-direction: column;
  overflow: visible;
}

.modal-right-column {
  flex: 1;
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--border-color);
  padding-left: 20px;
  overflow: hidden;
}

.modal-placeholder {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-left: 1px solid var(--border-color);
  padding-left: 20px;
}

.placeholder-column {
  justify-content: center;
}

.placeholder-text {
  color: var(--text-secondary);
  font-size: 14px;
  text-align: center;
}

/* Column Header */
.column-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
}

.column-header .count-badge {
  background: var(--accent);
  color: white;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  margin-left: 8px;
}

/* Scrollable List */
.scrollable-list {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

.list-item {
  padding: 12px;
  cursor: pointer;
  border-bottom: 1px solid var(--border-color);
  transition: background 0.15s;
}

.list-item:last-child {
  border-bottom: none;
}

.list-item:hover {
  background: var(--sidebar-hover);
}

.list-item.selected {
  background: var(--session-active);
  border-left: 3px solid var(--accent);
}

.list-item .item-title {
  font-size: 13px;
  color: var(--text-primary);
  font-family: 'SF Mono', Monaco, monospace;
  word-break: break-all;
}

.list-item .item-info {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.list-empty {
  padding: 24px 16px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 13px;
}

/* Session Item Detailed */
.session-item-detailed .item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.session-item-detailed .item-title {
  font-weight: 500;
  font-family: 'SF Mono', Monaco, monospace;
}

.session-item-detailed .item-date {
  font-size: 11px;
  color: var(--text-secondary);
}

.session-item-detailed .item-preview {
  font-size: 12px;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Mini List (for folders in left column) */
.mini-list {
  height: 180px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 12px;
}

.mini-list-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 10px;
  cursor: pointer;
  border-bottom: 1px solid var(--border-color);
  transition: background 0.15s;
}

.mini-list-item:last-child {
  border-bottom: none;
}

.mini-list-item:hover {
  background: var(--sidebar-hover);
}

.mini-list-item.selected {
  background: var(--session-active);
}

.mini-list-item .item-path {
  flex: 1;
  font-family: 'SF Mono', Monaco, monospace;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-right: 8px;
}

.mini-list-item .item-count {
  flex-shrink: 0;
  background: var(--bg-user-msg);
  padding: 2px 6px;
  border-radius: 8px;
  font-size: 11px;
  color: var(--text-secondary);
}

/* Folders Section */
.folders-section {
  margin-bottom: 12px;
}

.folders-section .column-header {
  font-size: 12px;
  margin-bottom: 8px;
}

/* Button Block */
.btn-block {
  width: 100%;
}

/* Modal Actions in left column */
.modal-left-column .modal-actions {
  margin-top: auto;
  padding-top: 16px;
}

/* Three Column Modal Layout */
.modal-three-col {
  max-width: 900px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
}

.modal-three-col .modal-body {
  flex: 1;
  overflow: hidden;
  padding: 16px;
}

.modal-three-columns {
  display: flex;
  gap: 16px;
  height: 420px;
}

.modal-col-fixed {
  flex: 0 0 180px;
  display: flex;
  flex-direction: column;
}

.modal-col-fixed .form-group {
  margin-bottom: 12px;
}

.modal-col-fixed .form-group label {
  font-size: 12px;
  margin-bottom: 4px;
}

.modal-col-fixed .form-group input,
.modal-col-fixed .form-group select {
  font-size: 13px;
  padding: 8px 10px;
}

.modal-col-fixed .modal-actions {
  margin-top: auto;
}

.modal-col-scroll {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  border-left: 1px solid var(--border-color);
  padding-left: 16px;
}

.modal-col-scroll .scrollable-list {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}

.modal-col-scroll .column-header {
  flex-shrink: 0;
}

.list-empty-full {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 13px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

/* Azure-style Progressive Modal Layout */
.modal-progressive {
  max-width: 580px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  transition: max-width 0.3s ease;
}

.modal-progressive.show-sessions {
  max-width: 860px;
}

.modal-progressive .modal-body {
  flex: 1;
  overflow: hidden;
  padding: 16px;
}

.modal-progressive-columns {
  display: flex;
  gap: 0;
  height: 420px;
}

/* Progressive columns */
.prog-col {
  display: flex;
  flex-direction: column;
  min-width: 0;
  transition: flex 0.3s ease, opacity 0.3s ease, padding 0.3s ease;
}

.prog-col-config {
  flex: 0 0 180px;
  padding-right: 16px;
}

.prog-col-config .form-group {
  margin-bottom: 12px;
}

.prog-col-config .form-group label {
  font-size: 12px;
  margin-bottom: 4px;
}

.prog-col-config .form-group input,
.prog-col-config .form-group select {
  font-size: 13px;
  padding: 8px 10px;
}

.prog-col-config .modal-actions {
  margin-top: auto;
}

.prog-col-folders {
  flex: 1;
  border-left: 1px solid var(--border-color);
  padding-left: 16px;
  padding-right: 16px;
}

.prog-col-sessions {
  flex: 0;
  width: 0;
  opacity: 0;
  overflow: hidden;
  border-left: 1px solid transparent;
  padding-left: 0;
}

/* When sessions column is shown */
.modal-progressive.show-sessions .prog-col-config {
  flex: 0 0 160px;
}

.modal-progressive.show-sessions .prog-col-folders {
  flex: 0 0 240px;
}

.modal-progressive.show-sessions .prog-col-sessions {
  flex: 1;
  width: auto;
  opacity: 1;
  border-left-color: var(--border-color);
  padding-left: 16px;
}

.prog-col .scrollable-list {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

.prog-col .column-header {
  flex-shrink: 0;
  margin-bottom: 8px;
}

/* Fix: Progressive modal input alignment */
.prog-col-config .form-group {
  display: flex;
  flex-direction: column;
}

.prog-col-config .form-group label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.prog-col-config .form-group input,
.prog-col-config .form-group select {
  width: 100%;
  box-sizing: border-box;
}

/* Fix: Fixed modal height */
.modal-progressive {
  height: 520px;
  max-height: 80vh;
}

.modal-progressive-columns {
  height: 100%;
  max-height: calc(520px - 100px);
}

/* Mobile responsive styles */
@media (max-width: 768px) {
  /* Hide status panel on mobile */
  .status-panel {
    display: none;
  }

  /* Adjust main layout */
  .chat-page {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: none;
  }

  .chat-page.show-sidebar .sidebar {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 100;
    background: var(--bg-sidebar);
  }

  /* Mobile modal - vertical scroll */
  .modal-progressive {
    max-width: 95vw;
    width: 95vw;
    height: auto;
    max-height: 90vh;
  }

  .modal-progressive.show-sessions {
    max-width: 95vw;
  }

  .modal-progressive-columns {
    flex-direction: column;
    height: auto;
    max-height: none;
    gap: 16px;
  }

  .prog-col {
    transition: none;
  }

  .prog-col-config {
    flex: none;
    padding-right: 0;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
  }

  .prog-col-folders {
    flex: none;
    border-left: none;
    padding-left: 0;
    padding-right: 0;
  }

  .prog-col-folders .scrollable-list {
    max-height: 200px;
  }

  .prog-col-sessions {
    flex: none;
    width: auto;
    opacity: 1;
    overflow: visible;
    border-left: none;
    padding-left: 0;
    display: none;
  }

  .modal-progressive.show-sessions .prog-col-config {
    flex: none;
  }

  .modal-progressive.show-sessions .prog-col-folders {
    flex: none;
  }

  .modal-progressive.show-sessions .prog-col-sessions {
    display: flex;
  }

  .modal-progressive.show-sessions .prog-col-sessions .scrollable-list {
    max-height: 200px;
  }

  /* Mobile list items - show 5 items */
  .prog-col .scrollable-list {
    max-height: 220px; /* ~5 items at 44px each */
  }

  .prog-col .list-item {
    padding: 10px 12px;
  }
}

/* Small mobile */
@media (max-width: 480px) {
  .modal {
    margin: 8px;
    max-height: calc(100vh - 16px);
  }

  .modal-progressive {
    width: calc(100vw - 16px);
  }

  .prog-col-config .form-group input,
  .prog-col-config .form-group select {
    font-size: 16px; /* Prevent iOS zoom */
  }
}

/* Status Panel - Info Grid */
.info-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}

.info-label {
  color: var(--text-secondary);
}

.info-value {
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.info-value.mono {
  font-family: 'SF Mono', Monaco, monospace;
  font-size: 12px;
}

/* Context Usage */
.context-usage {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.usage-bar {
  height: 6px;
  background: var(--border-color);
  border-radius: 3px;
  overflow: hidden;
}

.usage-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
  transition: width 0.3s ease;
}

.usage-text {
  font-size: 11px;
  color: var(--text-secondary);
  font-family: 'SF Mono', Monaco, monospace;
}

/* Secondary button style */
.new-chat-btn.btn-secondary {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.new-chat-btn.btn-secondary:hover {
  background: var(--sidebar-hover);
  color: var(--text-primary);
  border-color: var(--accent);
}

.new-chat-btn.btn-secondary svg {
  fill: currentColor;
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 101;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 8px;
  background: var(--bg-sidebar);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.mobile-menu-btn svg {
  width: 24px;
  height: 24px;
  fill: var(--text-primary);
}

.mobile-menu-btn:hover {
  background: var(--sidebar-hover);
}

/* Sidebar Overlay */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 99;
}

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: flex;
  }

  .sidebar-overlay {
    display: block;
  }

  .chat-page {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 280px;
    z-index: 100;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }

  .chat-page.show-sidebar .sidebar {
    transform: translateX(0);
  }

  /* Adjust header for mobile menu button */
  .chat-header {
    padding-left: 60px;
  }

  .chat-header h1 {
    font-size: 16px;
  }
}

/* ===================== */
/* Markdown Body Styles  */
/* ===================== */

.markdown-body {
  line-height: 1.75;
  word-wrap: break-word;
  font-size: 15px;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
  margin-top: 1.5em;
  margin-bottom: 0.75em;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
}

.markdown-body h1 { font-size: 1.5em; }
.markdown-body h2 { font-size: 1.25em; }
.markdown-body h3 { font-size: 1.1em; }
.markdown-body h4 { font-size: 1em; }

.markdown-body h1:first-child,
.markdown-body h2:first-child,
.markdown-body h3:first-child {
  margin-top: 0;
}

.markdown-body p {
  margin: 1em 0;
}

.markdown-body p:first-child {
  margin-top: 0;
}

.markdown-body p:last-child {
  margin-bottom: 0;
}

.markdown-body ul,
.markdown-body ol {
  padding-left: 1.75em;
  margin: 1em 0;
}

.markdown-body li {
  margin: 0.5em 0;
}

.markdown-body li > p {
  margin: 0.5em 0;
}

.markdown-body blockquote {
  margin: 1em 0;
  padding: 0.75em 1em;
  border-left: 3px solid var(--accent);
  background: var(--bg-user-msg);
  color: var(--text-secondary);
  border-radius: 0 8px 8px 0;
}

.markdown-body hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 2em 0;
}

.markdown-body table {
  border-collapse: collapse;
  width: 100%;
  margin: 1.5em 0;
  font-size: 0.9em;
  border-radius: 8px;
  overflow: hidden;
}

.markdown-body th,
.markdown-body td {
  border: 1px solid var(--border-color);
  padding: 10px 14px;
  text-align: left;
}

.markdown-body th {
  background: var(--bg-sidebar);
  font-weight: 600;
}

.markdown-body tr:nth-child(even) {
  background: var(--bg-user-msg);
}

.markdown-body a {
  color: var(--accent);
  text-decoration: none;
}

.markdown-body a:hover {
  text-decoration: underline;
}

.markdown-body img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
}

/* Inline Code - light colored */
.markdown-body code {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  background: var(--inline-code-bg);
  color: var(--text-primary);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.875em;
}

/* Code Block Container */
.markdown-body pre {
  margin: 0;
  padding: 1em;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.6;
  background: var(--code-bg);
  color: var(--code-text);
}

.markdown-body pre code {
  background: none;
  color: inherit;
  padding: 0;
  font-size: inherit;
}

/* Code Block Wrapper - ChatGPT Style */
.code-block-wrapper {
  position: relative;
  margin: 1em 0;
  border-radius: 8px;
  overflow: hidden;
  background: var(--code-bg);
}

.code-block-wrapper:first-child {
  margin-top: 0;
}

.code-block-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 16px;
  background: var(--code-header-bg);
  color: var(--code-text);
}

.code-lang {
  font-size: 12px;
  color: var(--text-muted);
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

.code-copy-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 4px 8px;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 12px;
  transition: color 0.15s;
}

.code-copy-btn:hover {
  color: var(--code-text);
}

/* Message Header with Copy Button */
.message.assistant {
  position: relative;
}

.message.assistant .message-header {
  position: absolute;
  top: 0;
  right: 0;
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity 0.15s;
}

.message.assistant:hover .message-header {
  opacity: 1;
}

/* Copy Button */
.copy-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.copy-btn:hover {
  background: var(--bg-user-msg);
  color: var(--text-primary);
}

.copy-btn.small {
  width: 24px;
  height: 24px;
}

/* Tool Messages - Modern Style */
.message.tool-use {
  background: var(--tool-bg);
  border: 1px solid var(--tool-border);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 13px;
}

.message.tool-result {
  background: var(--tool-result-bg);
  border: 1px solid var(--tool-result-border);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 13px;
  max-height: 200px;
  overflow-y: auto;
}

/* Tool Header */
.tool-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.message.tool-use .tool-name {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.message.tool-use .tool-name::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

.tool-result-label {
  font-size: 12px;
  color: var(--success);
  font-weight: 500;
}

.message.tool-use .tool-input,
.message.tool-result .tool-output {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 10px 12px;
  border-radius: 6px;
  overflow-x: auto;
  margin: 0;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 12px;
  line-height: 1.5;
}

/* Syntax Highlighting Theme Overrides */
.hljs {
  background: transparent !important;
  padding: 0 !important;
  color: var(--code-text) !important;
}

/* User Message Attachments - ChatGPT Style */
.user-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}

.user-attachment-item {
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg-main);
  border: 1px solid var(--border-color);
}

.user-attachment-item.is-image {
  max-width: 300px;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}

.user-attachment-item.is-image:hover {
  transform: scale(1.02);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.user-attachment-image {
  display: block;
  max-width: 100%;
  max-height: 200px;
  object-fit: contain;
  border-radius: 12px;
}

.user-attachment-file {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  min-width: 150px;
  max-width: 250px;
}

.user-attachment-file .file-icon {
  font-size: 20px;
  flex-shrink: 0;
}

.user-attachment-file .file-name {
  font-size: 13px;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Adjust user message with attachments */
.message.user {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.message.user .message-content {
  word-break: break-word;
}

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