/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary: #0f0f0f;
  --bg-secondary: #1a1a1a;
  --bg-message-user: #2563eb;
  --bg-message-assistant: #2a2a2a;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --border-color: #333;
  --success-color: #22c55e;
  --error-color: #ef4444;
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  height: 100vh;
  overflow: hidden;
}

/* Screens */
.screen {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.screen.hidden {
  display: none;
}

/* Auth Screen */
.auth-logo {
  position: absolute;
  top: 1.5rem;
  left: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
  transition: all 0.2s ease;
}

.auth-logo:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  border-color: var(--bg-message-user);
}

.auth-logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--bg-message-user) 0%, #7c3aed 100%);
  border-radius: 8px;
  flex-shrink: 0;
}

.auth-logo-icon svg {
  color: white;
  width: 20px;
  height: 20px;
}

.auth-logo-name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.auth-container {
  background: var(--bg-secondary);
  padding: 2rem;
  border-radius: 12px;
  width: 100%;
  max-width: 400px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.auth-container h1 {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
}

.auth-container > p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

#token-input-container {
  margin-bottom: 1rem;
  text-align: left;
}

#token-input-container label {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

#token-input-container.hidden {
  display: none;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}

input[type="text"]:focus,
input[type="password"]:focus {
  border-color: var(--bg-message-user);
}

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

button {
  width: 100%;
  padding: 0.75rem 1.5rem;
  background: var(--bg-message-user);
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, opacity 0.2s;
}

button:hover:not(:disabled) {
  background: #1d4ed8;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.error {
  color: var(--error-color);
  font-size: 0.875rem;
  margin-top: 1rem;
  min-height: 1.25rem;
}

/* ==================== Service Info ==================== */
.service-info {
  margin: 1.5rem 0;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
}

.service-info-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.service-info-content {
  padding: 0.75rem;
}

.service-info-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  font-size: 0.875rem;
}

.service-info-item:not(:last-child) {
  border-bottom: 1px solid var(--border-color);
}

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

.service-info-value {
  color: var(--text-primary);
  font-weight: 500;
}

.status-dot-small {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-secondary);
  margin-right: 0.5rem;
}

.status-checking .status-dot-small {
  background: #f59e0b;
  animation: pulse 1s infinite;
}

.status-online .status-dot-small {
  background: var(--success-color);
}

.status-offline .status-dot-small {
  background: var(--error-color);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Chat Container */
.chat-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
  background: var(--bg-primary);
}

/* Chat Header */
.chat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1.125rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  gap: 0.75rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  position: relative;
  z-index: 10;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
  min-width: 0;
}

/* ==================== App Logo ==================== */
.app-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--bg-message-user) 0%, #7c3aed 100%);
  border-radius: 10px;
  flex-shrink: 0;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.app-logo:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.app-logo svg {
  color: white;
  width: 24px;
  height: 24px;
}

@media (max-width: 600px) {
  .app-logo {
    width: 32px;
    height: 32px;
  }

  .app-logo svg {
    width: 20px;
    height: 20px;
  }
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.chat-header h1 {
  font-size: 1.125rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: -0.02em;
}

.connection-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-secondary);
  transition: background 0.3s;
}

.status-dot.connected {
  background: var(--success-color);
}

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

/* Messages Area */
.messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.messages::-webkit-scrollbar {
  width: 6px;
}

.messages::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

.messages::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

.welcome-message {
  text-align: center;
  color: var(--text-secondary);
  padding: 2rem 1rem;
}

.welcome-message p {
  margin-bottom: 0.5rem;
}

/* Message Bubbles */
.message {
  display: flex;
  flex-direction: column;
  max-width: 80%;
  animation: messageIn 0.3s ease-out;
  position: relative;
}

@keyframes messageIn {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

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

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

.message-bubble {
  padding: 0.75rem 1rem;
  border-radius: 16px;
  word-wrap: break-word;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  transition: box-shadow 0.2s ease;
}

.message.user .message-bubble {
  background: var(--bg-message-user);
  color: white;
  border-bottom-right-radius: 4px;
}

.message.assistant .message-bubble {
  background: var(--bg-message-assistant);
  border-bottom-left-radius: 4px;
}

.message.user .message-bubble:hover {
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.message-time {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
  padding: 0 0.25rem;
}

.message.user .message-time {
  text-align: right;
}

/* Markdown-like styling for assistant messages */
.message.assistant .message-bubble {
  line-height: 1.6;
}

.message.assistant .message-bubble code {
  background: rgba(0, 0, 0, 0.3);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  font-size: 0.9em;
}

.message.assistant .message-bubble pre {
  background: rgba(0, 0, 0, 0.3);
  padding: 0.75rem;
  border-radius: 8px;
  overflow-x: auto;
  margin: 0.5rem 0;
}

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

.message.assistant .message-bubble p {
  margin-bottom: 0.5rem;
}

.message.assistant .message-bubble p:last-child {
  margin-bottom: 0;
}

/* Typing Indicator */
.typing-indicator {
  display: flex;
  gap: 4px;
  padding: 0.75rem 1rem;
  background: var(--bg-message-assistant);
  border-radius: 12px;
  border-bottom-left-radius: 4px;
  width: fit-content;
}

.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);
  }
  30% {
    transform: translateY(-4px);
  }
}

/* Input Area */
.input-area {
  padding: 1rem 1.5rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

#message-form {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

#message-input {
  flex: 1;
}

#send-btn {
  width: auto;
  padding: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

#send-btn svg {
  transform: rotate(45deg);
}

/* Responsive Design */
@media (max-width: 640px) {
  .auth-container {
    margin: 1rem;
    padding: 1.5rem;
  }

  .chat-header {
    padding: 0.75rem 1rem;
  }

  .messages {
    padding: 1rem;
  }

  .input-area {
    padding: 0.75rem 1rem;
  }

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

/* ==================== Message Menu ==================== */
.message-menu-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 16px;
  padding: 4px 8px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s;
  border-radius: 4px;
}

.message:hover .message-menu-btn {
  opacity: 1;
}

.message-menu-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

.message-menu {
  position: fixed;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  z-index: 1000;
  min-width: 120px;
  overflow: hidden;
  animation: menuFadeIn 0.2s ease-out;
}

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

.message-menu button {
  width: 100%;
  padding: 10px 16px;
  background: transparent;
  border: none;
  color: var(--text-primary);
  text-align: left;
  cursor: pointer;
  transition: background 0.2s;
  font-size: 14px;
}

.message-menu button:hover {
  background: var(--bg-primary);
}

/* ==================== Toast Notification ==================== */
.toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px 24px;
  color: var(--text-primary);
  font-size: 14px;
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
  z-index: 1000;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ==================== Header Buttons ==================== */
.header-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.header-btn:hover {
  background: var(--bg-primary);
  color: var(--text-primary);
  border-color: var(--bg-message-user);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.header-btn:active {
  transform: scale(0.97);
}

/* Language toggle button */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.lang-toggle svg {
  flex-shrink: 0;
}

.lang-label {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* ==================== Code Block Improvements ==================== */
.message.assistant .message-bubble pre {
  background: #1e1e1e;
  border: 1px solid var(--border-color);
  position: relative;
}

.message.assistant .message-bubble pre::before {
  content: attr(data-language);
  position: absolute;
  top: 4px;
  right: 8px;
  font-size: 10px;
  color: var(--text-secondary);
  text-transform: uppercase;
}

/* ==================== Responsive Design Updates ==================== */
@media (max-width: 640px) {
  .header-btn {
    padding: 5px 10px;
    font-size: 12px;
  }
  
  .message-menu {
    right: 10px;
  }
}

/* ==================== Chat Layout with Sidebar ==================== */
.chat-layout {
  display: flex;
  height: 100vh;
  width: 100vw;
}

/* ==================== Session Sidebar ==================== */
.session-sidebar {
  width: 280px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease;
}

/* Sidebar Logo Section */
.sidebar-logo-section {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 1.125rem 1rem;
  border-bottom: 1px solid var(--border-color);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(124, 58, 237, 0.03) 100%);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--bg-message-user) 0%, #7c3aed 100%);
  border-radius: 10px;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.sidebar-logo svg {
  color: white;
  width: 24px;
  height: 24px;
}

.sidebar-title {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  flex: 1;
}

.sidebar-app-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.sidebar-subtitle {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Sessions Header */
.sidebar-sessions-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.875rem 1rem 0.75rem;
}

.sidebar-sessions-header h2 {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

.sidebar-sessions-header .icon-btn {
  width: 28px;
  height: 28px;
  padding: 0;
  color: var(--text-secondary);
}

.sidebar-sessions-header .icon-btn:hover {
  background: var(--bg-primary);
  color: var(--text-primary);
}

.sidebar-sessions-header .icon-btn svg {
  width: 16px;
  height: 16px;
}

.session-list {
  flex: 1;
  overflow-y: auto;
  padding: 0.5rem;
}

.session-list::-webkit-scrollbar {
  width: 4px;
}

.session-list::-webkit-scrollbar-track {
  background: transparent;
}

.session-list::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 2px;
}

.session-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0.75rem;
  margin-bottom: 0.25rem;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s;
  position: relative;
}

.session-item:hover {
  background: rgba(255, 255, 255, 0.05);
}

.session-item.active {
  background: rgba(37, 99, 235, 0.2);
  border-left: 3px solid var(--bg-message-user);
}

.session-info {
  flex: 1;
  min-width: 0;
}

.session-name {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.session-time {
  display: block;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.session-actions {
  display: none;
  gap: 4px;
}

.session-item:hover .session-actions {
  display: flex;
}

.session-action-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 4px;
  cursor: pointer;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.session-action-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

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

/* ==================== Sidebar Footer ==================== */
.sidebar-footer {
  display: flex;
  flex-direction: column;
  gap: 1px;
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.sidebar-action-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.75rem 1rem;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

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

.sidebar-action-btn svg {
  flex-shrink: 0;
}

.sidebar-action-btn span {
  flex: 1;
  text-align: left;
}

.github-link {
  border: none;
}

.icon-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 8px;
  cursor: pointer;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.icon-btn:hover {
  background: var(--bg-message-assistant);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.icon-btn:active {
  transform: translateY(0);
}

/* Icon button with special styling for header */
.header-icon-btn {
  width: 36px;
  height: 36px;
  padding: 0;
}

.header-icon-btn svg {
  width: 18px;
  height: 18px;
}

/* Attachment button - smaller and simpler */
.attach-btn {
  width: 32px;
  height: 32px;
  padding: 0;
}

.attach-btn svg {
  width: 20px;
  height: 20px;
}

/* ==================== Enhanced Chat Container ==================== */
.chat-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* ==================== Enhanced Connection Status ==================== */
.connection-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-secondary);
  position: relative;
}

.status-dot.connected {
  background: var(--success-color);
  box-shadow: 0 0 8px var(--success-color);
  animation: pulse 2s infinite;
}

.status-dot.connecting {
  background: #f59e0b;
  animation: blink 1s infinite;
}

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

.status-dot.error {
  background: var(--error-color);
  animation: errorPulse 1s infinite;
}

/* Enhanced status animations */
@keyframes pulse {
  0%, 100% {
    box-shadow: 0 0 8px var(--success-color);
  }
  50% {
    box-shadow: 0 0 16px var(--success-color);
  }
}

@keyframes blink {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.4;
    transform: scale(0.8);
  }
}

@keyframes errorPulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4);
  }
  50% {
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0);
  }
}

/* Connected state with pulse */
.status-dot.connected {
  background: var(--success-color);
  animation: connectedPulse 2s ease-in-out infinite;
}

@keyframes connectedPulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4);
  }
  50% {
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0);
  }
}

.status-text {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-primary);
}

.status-detail {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}

.connection-quality {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  transition: all 0.2s ease;
}

.connection-quality:hover {
  background: var(--bg-message-assistant);
}

.connection-quality svg {
  width: 14px;
  height: 14px;
  color: var(--text-secondary);
  transition: color 0.3s ease;
}

.connection-quality.good svg {
  color: var(--success-color);
  filter: drop-shadow(0 0 4px rgba(34, 197, 94, 0.4));
}

.connection-quality.medium svg {
  color: #f59e0b;
  filter: drop-shadow(0 0 4px rgba(245, 158, 11, 0.4));
}

.connection-quality.poor svg {
  color: var(--error-color);
  filter: drop-shadow(0 0 4px rgba(239, 68, 68, 0.4));
}

/* ==================== Enhanced Message Menu ==================== */
.message-menu-btn {
  position: absolute;
  top: 6px;
  right: 6px;
  background: rgba(255, 255, 255, 0.05);
  border: none;
  color: var(--text-secondary);
  font-size: 16px;
  padding: 4px 8px;
  cursor: pointer;
  opacity: 0;
  transition: all 0.2s;
  border-radius: 6px;
}

.message:hover .message-menu-btn {
  opacity: 1;
}

.message-menu-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  color: var(--text-primary);
}

.message-menu {
  position: fixed;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  z-index: 1000;
  min-width: 140px;
  overflow: hidden;
  animation: menuFadeIn 0.2s ease-out;
}

@keyframes menuFadeIn {
  from {
    opacity: 0;
    transform: translateY(-8px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.message-menu button {
  width: 100%;
  padding: 10px 14px;
  background: transparent;
  border: none;
  color: var(--text-primary);
  text-align: left;
  cursor: pointer;
  transition: background 0.2s;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.message-menu button:hover {
  background: rgba(255, 255, 255, 0.1);
}

.message-menu button svg {
  flex-shrink: 0;
}

/* ==================== Toast Notification ==================== */
.toast {
  position: fixed;
  bottom: 90px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.toast-close {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 18px;
  cursor: pointer;
  padding: 0;
  line-height: 1;
}

.toast-close:hover {
  color: var(--text-primary);
}

.toast.info {
  border-left: 3px solid #3b82f6;
}

.toast.success {
  border-left: 3px solid var(--success-color);
}

.toast.error {
  border-left: 3px solid var(--error-color);
}

/* ==================== Enhanced Code Blocks ==================== */
.message.assistant .message-bubble pre {
  background: #1e1e1e;
  border: 1px solid #3e3e3e;
  border-radius: 8px;
  overflow: hidden;
  margin: 0.75rem 0;
}

.message.assistant .message-bubble pre code {
  display: block;
  padding: 1rem;
  overflow-x: auto;
  font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Consolas', monospace;
  font-size: 0.875rem;
  line-height: 1.6;
  background: transparent;
}

.message.assistant .message-bubble code {
  background: rgba(255, 255, 255, 0.05);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  font-size: 0.9em;
}

.message.assistant .message-bubble a {
  color: #3b82f6;
  text-decoration: underline;
}

.message.assistant .message-bubble a:hover {
  color: #60a5fa;
}

/* ==================== Enhanced Typing Indicator ==================== */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0.75rem 1rem;
  background: var(--bg-message-assistant);
  border-radius: 12px;
  border-bottom-left-radius: 4px;
  width: fit-content;
}

.typing-indicator span:not(.typing-text) {
  width: 8px;
  height: 8px;
  background: var(--text-secondary);
  border-radius: 50%;
  animation: typing 1.4s infinite;
}

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

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

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

.typing-text {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

@keyframes typing {
  0%, 60%, 100% {
    transform: translateY(0);
  }
  30% {
    transform: translateY(-4px);
  }
}

/* ==================== Mobile Responsive ==================== */
@media (max-width: 768px) {
  /* Auth screen logo adjustments */
  .auth-logo {
    top: 1rem;
    left: 1rem;
    padding: 0.5rem 0.75rem;
    gap: 0.5rem;
  }

  .auth-logo-icon {
    width: 28px;
    height: 28px;
  }

  .auth-logo-icon svg {
    width: 18px;
    height: 18px;
  }

  .auth-logo-name {
    font-size: 0.875rem;
  }

  .session-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 100;
    transform: translateX(-100%);
  }

  .session-sidebar.open {
    transform: translateX(0);
  }

  /* Sidebar logo section on mobile */
  .sidebar-logo-section {
    padding: 0.875rem;
  }

  .sidebar-logo {
    width: 36px;
    height: 36px;
  }

  .sidebar-logo svg {
    width: 20px;
    height: 20px;
  }

  .sidebar-app-name {
    font-size: 0.9375rem;
  }

  .sidebar-subtitle {
    font-size: 0.7rem;
  }

  .chat-layout {
    flex-direction: column;
  }

  .chat-container {
    width: 100%;
  }

  .mobile-only {
    display: block;
  }

  .chat-header {
    padding: 0.625rem 0.875rem;
  }

  .header-left {
    gap: 0.5rem;
  }

  .app-logo {
    width: 32px;
    height: 32px;
  }

  .app-logo svg {
    width: 20px;
    height: 20px;
  }

  .chat-header h1 {
    font-size: 1rem;
  }

  .header-right {
    gap: 0.25rem;
  }

  /* Icon buttons stay visible on mobile */
  .header-icon-btn {
    width: 32px;
    height: 32px;
  }

  .header-icon-btn svg {
    width: 16px;
    height: 16px;
  }

  /* Text buttons hide text on mobile */
  .header-btn {
    padding: 6px 10px;
    font-size: 12px;
  }

  .header-btn span {
    display: none;
  }

  /* Language toggle shows icon only */
  .lang-toggle {
    padding: 6px;
  }

  .lang-toggle .lang-label {
    display: none;
  }

  .message {
    max-width: 90%;
  }

  .connection-status {
    flex-wrap: wrap;
  }

  .status-detail {
    display: none;
  }

  /* Hide connection quality on very small screens */
  .connection-quality {
    display: none;
  }
}

@media (min-width: 769px) {
  .mobile-only {
    display: none;
  }
}

/* ==================== Language Selector ==================== */
.language-selector {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 1.5rem;
}

.lang-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.lang-btn:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
}

.lang-btn.active {
  background: var(--bg-message-user);
  border-color: var(--bg-message-user);
  color: white;
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
}

.lang-label {
  font-size: 12px;
  font-weight: 600;
}

/* ==================== Agent Typing Indicator ==================== */
.agent-typing {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0.5rem 1rem;
  margin-bottom: 0.5rem;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.agent-typing.hidden {
  display: none;
}

.typing-avatar {
  color: var(--text-secondary);
}

.typing-dots {
  display: flex;
  gap: 3px;
}

.typing-dots span {
  width: 6px;
  height: 6px;
  background: var(--text-secondary);
  border-radius: 50%;
  animation: typingDot 1.4s infinite;
}

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

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

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

@keyframes typingDot {
  0%, 60%, 100% {
    transform: translateY(0);
  }
  30% {
    transform: translateY(-4px);
  }
}

/* ==================== Message Status (Read Receipts) ==================== */
.message-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
}

.message-time {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.message-status {
  display: flex;
  align-items: center;
  min-width: 20px;
  transition: all 0.3s ease;
}

.message-status svg {
  transition: all 0.3s ease;
}

/* Status colors */
.message-status.status-sending svg {
  opacity: 0.5;
}

.message-status.status-sent svg,
.message-status.status-delivered svg {
  opacity: 1;
  color: var(--text-secondary);
}

.message-status.status-read {
  color: var(--success-color);
}

.message-status.status-read svg {
  filter: drop-shadow(0 0 2px var(--success-color));
}

.message-status.status-read-pulse svg {
  animation: readPulse 0.5s ease;
}

@keyframes readPulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.2);
  }
}

.message-status.status-failed {
  color: var(--error-color);
}

/* ==================== Enhanced Message Menu for Code ==================== */
.message-menu button[data-action="copy-code"] {
  display: none;
}

.message.assistant .message-menu button[data-action="copy-code"] {
  display: flex;
}

/* ==================== Mobile Language Button ==================== */
@media (max-width: 768px) {
  .lang-toggle span {
    display: none;
  }
}

/* ==================== Enhanced Welcome Message ==================== */
.welcome-message {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 1rem;
  text-align: center;
  color: var(--text-secondary);
}

.welcome-message svg {
  margin-bottom: 1rem;
  opacity: 0.5;
}

/* ==================== RTL Support (for future use) ==================== */
[dir="rtl"] .message.user {
  align-self: flex-start;
}

[dir="rtl"] .message.assistant {
  align-self: flex-end;
}

/* ==================== Theme Styles ==================== */
body[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f5;
  --bg-message-user: #2563eb;
  --bg-message-assistant: #e5e5e5;
  --text-primary: #1a1a1a;
  --text-secondary: #666666;
  --border-color: #e0e0e0;
}

body[data-theme="light"] .message.assistant .message-bubble {
  background: var(--bg-message-assistant);
  color: var(--text-primary);
}

body[data-theme="light"] .message.assistant code {
  background: rgba(0, 0, 0, 0.05);
  color: #e83e8c;
}

body[data-theme="light"] pre {
  background: #1e1e1e;
}

body[data-theme="light"] .session-sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
}

body[data-theme="light"] .auth-container {
  background: var(--bg-secondary);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

body[data-theme="light"] .auth-logo {
  background: var(--bg-primary);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

body[data-theme="light"] .sidebar-logo-section {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.03) 0%, rgba(124, 58, 237, 0.02) 100%);
}

body[data-theme="light"] .icon-btn:hover {
  background: rgba(0, 0, 0, 0.05);
}

body[data-theme="light"] .chat-header {
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

body[data-theme="light"] .connection-quality {
  background: rgba(0, 0, 0, 0.03);
}

body[data-theme="light"] .connection-quality:hover {
  background: rgba(0, 0, 0, 0.06);
}

/* Settings Modal Light Theme */
body[data-theme="light"] .github-button {
  background: #24292e;
  color: white;
}

body[data-theme="light"] .github-button:hover {
  background: #1a1e22;
}

body[data-theme="light"] .setting-option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

body[data-theme="light"] .setting-option:hover {
  background: var(--border-color);
}

body[data-theme="light"] .setting-option.active {
  background: rgba(37, 99, 235, 0.08);
  border-color: var(--bg-message-user);
}

body[data-theme="light"] .info-item {
  background: var(--bg-secondary);
}

body[data-theme="light"] .modal-overlay {
  background: rgba(0, 0, 0, 0.4);
}

body[data-theme="light"] .modal-content {
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  border: 1px solid var(--border-color);
}

body[data-theme="light"] .setting-header {
  color: #666666;
}

body[data-theme="light"] .lang-name {
  color: var(--text-primary);
}

body[data-theme="light"] .setting-option svg {
  color: var(--text-primary);
}

/* ==================== Search Bar ==================== */
.search-bar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
  padding: 1rem;
  animation: slideDown 0.2s ease;
}

.search-bar.hidden {
  display: none;
}

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

.search-input-wrapper {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
}

.search-input-wrapper svg {
  color: var(--text-secondary);
  flex-shrink: 0;
}

#search-input {
  flex: 1;
  border: none;
  background: transparent;
  padding: 0;
  font-size: 0.9rem;
}

#search-input:focus {
  outline: none;
}

.search-close-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.search-close-btn:hover {
  background: var(--bg-message-assistant);
}

.search-results {
  margin-top: 0.75rem;
  max-height: 400px;
  overflow-y: auto;
}

.search-info {
  font-size: 0.8rem;
  color: var(--text-secondary);
  padding: 0.5rem;
}

.search-no-results {
  text-align: center;
  padding: 2rem;
  color: var(--text-secondary);
}

.search-result-item {
  padding: 0.75rem;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s;
  border-bottom: 1px solid var(--border-color);
}

.search-result-item:hover {
  background: var(--bg-message-assistant);
}

.search-result-item.active {
  background: var(--bg-message-user);
  color: white;
}

.result-session {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.search-result-item.active .result-session {
  color: rgba(255, 255, 255, 0.8);
}

.result-content {
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.result-content mark {
  background: rgba(255, 255, 0, 0.3);
  color: inherit;
}

.search-result-item.active .result-content mark {
  background: rgba(255, 255, 255, 0.3);
}

.result-time {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.search-result-item.active .result-time {
  color: rgba(255, 255, 255, 0.8);
}

.search-more-info {
  text-align: center;
  padding: 0.75rem;
  color: var(--text-secondary);
  font-size: 0.8rem;
}

/* Search highlight on messages */
.message.search-highlight {
  animation: highlightPulse 1s ease;
}

@keyframes highlightPulse {
  0%, 100% {
    background: transparent;
  }
  50% {
    background: rgba(37, 99, 235, 0.2);
  }
}

/* ==================== File Drop Zone ==================== */
.file-drop-zone {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.9);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease;
}

.file-drop-zone.hidden {
  display: none;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.file-drop-content {
  text-align: center;
  padding: 3rem;
  border: 2px dashed var(--border-color);
  border-radius: 16px;
  background: var(--bg-secondary);
  max-width: 500px;
  width: 90%;
  transition: all 0.3s ease;
}

.file-drop-zone.drag-over .file-drop-content {
  border-color: var(--bg-message-user);
  background: rgba(37, 99, 235, 0.1);
  transform: scale(1.02);
}

.file-drop-content svg {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.file-drop-content p {
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.file-drop-hint {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.file-drop-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--bg-secondary);
  border: none;
  color: var(--text-primary);
  font-size: 2rem;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.file-drop-close:hover {
  background: var(--bg-message-assistant);
  transform: rotate(90deg);
}

/* File attachments in messages */
.file-bubble {
  padding: 0.75rem !important;
}

.file-attachment {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.attached-image {
  max-width: 300px;
  max-height: 300px;
  border-radius: 8px;
  object-fit: contain;
}

.file-icon {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.file-info {
  text-align: center;
}

.file-name {
  font-size: 0.875rem;
  word-break: break-all;
}

.file-size {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* ==================== Statistics Modal ==================== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal.hidden {
  display: none;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: var(--bg-secondary);
  border-radius: 16px;
  width: 90%;
  max-width: 600px;
  max-height: 80vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  animation: modalIn 0.3s ease;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.9) translateY(20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
}

.modal-close-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.modal-close-btn:hover {
  background: var(--bg-message-assistant);
  color: var(--text-primary);
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  flex: 1;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--bg-primary);
  border-radius: 12px;
  padding: 1.25rem;
  text-align: center;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--bg-message-user);
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.stat-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-info {
  background: var(--bg-primary);
  border-radius: 8px;
  padding: 1rem;
}

.stat-info-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.stat-info-value {
  font-size: 1rem;
  font-weight: 500;
}

/* Stats Chart */
.stats-chart-container {
  background: var(--bg-primary);
  border-radius: 12px;
  padding: 1.25rem;
}

.stats-chart-container h3 {
  font-size: 1rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.stats-chart {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  height: 150px;
  margin-bottom: 1rem;
}

.chart-bar-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
}

.chart-bars {
  flex: 1;
  width: 100%;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 4px;
  padding: 0 4px;
}

.chart-bar {
  width: 16px;
  min-height: 4px;
  border-radius: 4px 4px 0 0;
  transition: height 0.5s ease;
}

.chart-bar.user {
  background: var(--bg-message-user);
}

.chart-bar.assistant {
  background: var(--text-secondary);
}

.chart-label {
  font-size: 0.7rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
}

.chart-legend {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.legend-color {
  width: 12px;
  height: 12px;
  border-radius: 3px;
}

.legend-color.user {
  background: var(--bg-message-user);
}

.legend-color.assistant {
  background: var(--text-secondary);
}

/* ==================== Settings Modal ==================== */
.settings-body {
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.setting-group {
  border-bottom: 1px solid var(--border-color);
}

.setting-group:last-child {
  border-bottom: none;
}

.setting-header {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 1rem 1.25rem 0.75rem;
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.setting-header svg {
  width: 16px;
  height: 16px;
}

.setting-header h3 {
  font-size: 0.75rem;
  font-weight: 600;
  margin: 0;
}

.setting-options {
  display: flex;
  flex-direction: column;
  padding: 0 1rem 1rem;
  gap: 0.5rem;
}

.setting-option {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--bg-primary);
  border: 2px solid transparent;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.setting-option:hover {
  border-color: var(--border-color);
  background: var(--bg-secondary);
}

.setting-option.active {
  border-color: var(--bg-message-user);
  background: rgba(37, 99, 235, 0.1);
}

.setting-option svg:first-child {
  flex-shrink: 0;
}

.lang-flag {
  font-size: 1.25rem;
}

.lang-name {
  flex: 1;
  font-size: 0.9375rem;
  font-weight: 500;
}

.setting-option .check-icon {
  margin-left: auto;
  color: var(--success-color);
}

.setting-option .check-icon.hidden {
  display: none;
}

.setting-info {
  display: flex;
  flex-direction: column;
  padding: 0 1.25rem 1rem;
  gap: 0.625rem;
}

.info-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0.75rem;
  background: var(--bg-primary);
  border-radius: 8px;
}

.info-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.info-value {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
}

.setting-github {
  border-bottom: none;
  padding: 1rem 1.25rem;
}

.github-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.875rem 1.25rem;
  background: #24292e;
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
}

.github-button:hover {
  background: #2c3138;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.github-button svg:last-child {
  margin-left: auto;
}

/* ==================== Keyboard Shortcuts ==================== */
.welcome-shortcuts {
  margin-top: 1rem;
}

.shortcuts-hint {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  flex-wrap: wrap;
}

.shortcuts-hint kbd {
  background: var(--bg-message-assistant);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 0.125rem 0.375rem;
  font-size: 0.75rem;
  font-family: inherit;
}

/* ==================== Mobile Responsive Adjustments ==================== */
@media (max-width: 600px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .modal-content {
    width: 95%;
    max-height: 90vh;
  }

  .stats-chart {
    height: 120px;
  }

  .chart-bar {
    width: 12px;
  }
}