phd-advisor-frontend/src/styles/ChatPage.css

/* Modern Chat Page Layout */
.modern-chat-page {
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

[data-theme="dark"] .modern-chat-page {
  background: var(--bg-gradient);
  will-change: auto;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
}

/* Floating Header */
.floating-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--header-border);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--header-shadow);
  flex-shrink: 0;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.modern-home-btn {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: none;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.modern-home-btn:hover {
  background: var(--accent-primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.brand-text h1 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  line-height: 1.2;
}

.brand-text p {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.35;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}



.thinking-pulse {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  animation: pulse-dot 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.2); opacity: 0.8; }
}

/* Main Content Area */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding-top: 24px;
  padding-bottom: 140px; 
  padding-left: 16px;
  padding-right: 16px;
  overflow: visible; 
  min-height: 0; 
  height: 100vh; 
}

.export-dropdown {
  z-index: 1000;
}

/* Welcome State */
.welcome-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding-top: 40px;
  overflow-y: auto;
  overflow-x: hidden;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

.suggestions-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  flex-shrink: 0;
}

/* Chat State */
.chat-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
  height: 100%; 
}

.chat-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
  /* Add bottom padding to prevent content being hidden behind floating input */
  padding-bottom: 140px;
}

.messages-area {
  flex: 1;
  overflow: hidden;
  min-height: 0;
}

.messages-scroll {
  height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 20px;
  padding-bottom: 40px;
  background: var(--bg-gradient);
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.messages-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
  height: 100%;
  background: var(--bg-gradient);
}

.messages-list {
  flex: 1;
  overflow: hidden;
  min-height: 0;
  height: 100%;
}

/* Advisor carousel: horizontal layout for multiple advisor responses */
.advisor-carousel {
  display: flex;
  align-items: stretch;
  gap: 12px;
  margin-bottom: 24px;
  min-height: 0;
  width: 100%;
}

.advisor-carousel .carousel-viewport {
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.advisor-carousel .carousel-track {
  display: flex;
  height: 100%;
  transition: transform 0.25s ease-out;
}

/* Grid mode: wide layout, all advisor cards side by side */
.advisor-carousel.grid-mode .carousel-track {
  transform: none;
  gap: 16px;
}

.advisor-carousel.grid-mode .carousel-slide {
  flex: 1 1 0;
  min-width: 240px;
  max-width: 400px;
}

/* Carousel mode: narrow layout, one card at a time with arrows */
.advisor-carousel.carousel-mode {
  position: relative;
  padding: 0 40px;
}

.advisor-carousel.carousel-mode .carousel-track {
  width: 100%;
}

.advisor-carousel.carousel-mode .carousel-slide {
  width: 100%;
  flex-shrink: 0;
}

.advisor-carousel .carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border-primary);
  background: var(--bg-secondary);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  flex-shrink: 0;
  z-index: 2;
}

.advisor-carousel .carousel-arrow:hover:not(:disabled) {
  background: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
}

.advisor-carousel .carousel-arrow:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.advisor-carousel .carousel-prev {
  left: 0;
}

.advisor-carousel .carousel-next {
  right: 0;
}

.advisor-carousel .carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 12px;
  flex-shrink: 0;
}

.advisor-carousel .carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: var(--border-primary);
  cursor: pointer;
  transition: background 0.2s;
  padding: 0;
}

.advisor-carousel .carousel-dot.active,
.advisor-carousel .carousel-dot:hover {
  background: var(--accent-primary);
}

.single-response-wide {
  margin-bottom: 24px;
  width: 100%;
  max-width: 512px;
}


[data-theme="dark"] .messages-scroll,
[data-theme="dark"] .messages-container,
[data-theme="dark"] .main-content {
  background: var(--bg-gradient);
  will-change: auto;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
}

/* Smooth scrolling with fixed background */
@media (prefers-reduced-motion: no-preference) {
  .messages-scroll {
    scroll-behavior: smooth;
  }
}

/* Scrollbar styling for dark mode */
[data-theme="dark"] .messages-scroll::-webkit-scrollbar {
  width: 8px;
}

[data-theme="dark"] .messages-scroll::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: 4px;
}

[data-theme="dark"] .messages-scroll::-webkit-scrollbar-thumb {
  background: var(--border-primary);
  border-radius: 4px;
}

[data-theme="dark"] .messages-scroll::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}

/* Prevent background shift during scroll */
.messages-scroll * {
  background-attachment: fixed;
}

/* Ensure scroll anchor area */
.messages-end-anchor {
  height: 1px;
  background: transparent;
}


/* Message Components */
.orchestrator-message {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  align-items: flex-start;
}

.orchestrator-avatar {
  width: 40px;
  height: 40px;
  border-radius: 20px;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.orchestrator-content {
  flex: 1;
  background: var(--bg-secondary);
  border-radius: 16px;
  padding: 16px 20px;
  border: 1px solid var(--border-primary);
  max-width: 600px;
}

.orchestrator-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.orchestrator-name {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 14px;
}

.message-timestamp {
  font-size: 12px;
  color: var(--text-tertiary);
}

.orchestrator-text {
  color: var(--text-accent);
  line-height: 1.6;
  margin: 0;
}

/* System Notifications */
.system-notification {
  display: flex;
  justify-content: center;
  margin: 16px 0;
}

.system-content {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  padding: 12px 20px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
  text-align: center;
  max-width: 400px;
}

/* System Message Base Styles */
.system-message-container {
  display: flex;
  justify-content: center;
  margin: 16px 0;
}

.system-message {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 14px;
  color: var(--text-secondary);
  text-align: center;
  max-width: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

/* Document Upload Specific Styles */
.system-message.document-upload {
  background: #F0F9F4;
  border: 1px solid #10B981;
  border-left: 4px solid #10B981;
  color: #065F46;
  font-weight: 500;
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.1);
  animation: slideInNotification 0.3s ease-out;
}

.system-message.document-upload svg {
  color: #10B981;
  flex-shrink: 0;
}

.system-message.document-upload p {
  margin: 0;
  line-height: 1.4;
}

[data-theme="dark"] .system-message.document-upload {
  background: rgba(16, 185, 129, 0.15);
  border-color: #10B981;
  color: #6EE7B7;
}

[data-theme="dark"] .system-message.document-upload svg {
  color: #34D399;
}

/* Animation for notification appearance */
@keyframes slideInNotification {
  from {
    opacity: 0;
    transform: translateY(-8px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Thinking Indicators */
.orchestrator-thinking {
  display: flex;
  gap: 16px;
  align-items: center;
  opacity: 0.8;
  margin-bottom: 24px;
}

.orchestrator-thinking .thinking-bubble {
  width: 40px;
  height: 40px;
  min-width: 40px;
  min-height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-gradient, var(--accent-primary));
  color: white;
  border: none;
  box-shadow: var(--shadow-sm);
}

.thinking-content {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-secondary);
  border-radius: 16px;
  padding: 16px 20px;
  border: 1px solid var(--border-primary);
}

.thinking-label {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

.thinking-animation {
  display: flex;
  gap: 4px;
}

.thinking-animation .dot {
  width: 6px;
  height: 6px;
  background: var(--accent-primary);
  border-radius: 50%;
  animation: thinking-bounce 1.4s infinite ease-in-out both;
}

.thinking-animation .dot:nth-child(1) { animation-delay: -0.32s; }
.thinking-animation .dot:nth-child(2) { animation-delay: -0.16s; }
.thinking-animation .dot:nth-child(3) { animation-delay: 0s; }

@keyframes thinking-bounce {
  0%, 80%, 100% { transform: scale(0); }
  40% { transform: scale(1); }
}

/* Floating Input Area - FIXED VERSION */
.floating-input-area {
  position: fixed;
  bottom: 20px;
  left: 300px;
  right: 0;
  z-index: 50;
  background: transparent;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 860px;
  margin: 0 auto;
  transition: left 0.3s ease;
}

.floating-input-area.sidebar-collapsed {
  left: 70px;
}

/* Reply Banner in ChatPage - matches input width and fixes dark mode */
.floating-input-area .reply-banner {
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: 12px;
  padding: 12px 16px;
  margin: 0 16px 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  width: 100%;
  max-width: 768px;
  box-sizing: border-box;
}

[data-theme="dark"] .floating-input-area .reply-banner {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

/* Reply Info - Fix dark mode text color */
.floating-input-area .reply-info {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 14px;
}

.floating-input-area .reply-info strong {
  color: var(--accent-primary);
}

/* Cancel Reply Button */
.floating-input-area .cancel-reply {
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.floating-input-area .cancel-reply:hover {
  background: var(--bg-secondary);
  color: var(--text-secondary);
}

/* MAIN LAYOUT WITH SIDEBAR - FIXED */
.chat-page-with-sidebar {
  display: flex;
  height: 100vh;
  overflow: hidden;
  background: var(--bg-gradient);
}

.main-chat-area {
  flex: 1;
  margin-left: 300px; /* Width of sidebar when expanded */
  display: flex;
  flex-direction: column;
  height: 100vh;
  transition: margin-left 0.3s ease;
  overflow: hidden;
}

/* FIXED: Chat area expansion when sidebar is collapsed */
.main-chat-area.sidebar-collapsed {
  margin-left: 70px; /* Width of sidebar when collapsed */
}

/* Optional header sign out button */
.header-signout-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  border: none;
  background: none;
  border-radius: 6px;
  cursor: pointer;
  color: var(--text-secondary, #6b7280);
  transition: all 0.2s ease;
  margin-right: 8px;
}

.header-signout-btn:hover {
  background: var(--bg-secondary, #f3f4f6);
  color: #ef4444;
}

.dark .header-signout-btn:hover {
  background: var(--bg-secondary-dark, #374151);
}

.header-help-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: 12px;
  cursor: pointer;
  color: var(--text-secondary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: all 0.2s ease;
}

.header-help-btn svg {
  width: 20px;
  height: 20px;
  display: block;
}

.header-help-btn:hover {
  background: var(--bg-secondary);
  border-color: #2663EB;
  color: #2663EB;
}

/* Loading session indicator */
.loading-session {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 20px;
  color: var(--text-secondary);
  font-size: 14px;
  background: var(--bg-gradient);
}

[data-theme="dark"] .loading-session {
  color: var(--text-secondary-dark);
  background: var(--bg-gradient);
}

.dark .loading-session {
  color: var(--text-secondary-dark, #9ca3af);
}

.loading-session .loading-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border-light, #e5e7eb);
  border-top: 2px solid var(--primary-color, #3b82f6);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.dark .loading-session .loading-spinner {
  border-color: var(--border-dark, #374151);
  border-top-color: var(--primary-color, #3b82f6);
}

/* Document Indicator Styles */
.document-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--feature-bg);  /* Use theme variable */
  border: 1px solid var(--accent-primary);  /* Use theme variable */
  border-radius: 20px;
  color: var(--accent-primary);  /* Use theme variable */
  font-size: 13px;
  font-weight: 600;
  cursor: default;
  transition: all 0.2s ease;
}

.document-indicator:hover {
  background: var(--accent-primary);
  color: white;
}

.doc-count {
  background: var(--accent-primary);
  color: white;
  border-radius: 10px;
  padding: 2px 6px;
  font-size: 11px;
  font-weight: 700;
  min-width: 16px;
  text-align: center;
  line-height: 1.2;
}

.document-indicator:hover .doc-count {
  background: white;
  color: var(--accent-primary);
}

/* Provider Dropdown Styles - FIXED */
.provider-dropdown {
  position: relative;
  display: inline-block;
}

.provider-button {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 14px;
  min-width: 140px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.provider-button:hover:not(.loading) {
  background: var(--bg-secondary);
  border-color: var(--accent-primary);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.provider-button.open {
  background: var(--bg-secondary);
  border-color: var(--accent-primary);
}

.provider-button.loading {
  opacity: 0.7;
  cursor: not-allowed;
}

.provider-button-content {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.provider-icon {
  color: var(--accent-primary);
  flex-shrink: 0;
}

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

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

.provider-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
}

.provider-name {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 13px;
}

.provider-badge {
  font-size: 10px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.provider-badge.gemini { color: #4285f4; }
.provider-badge.ollama { color: #10b981; }
.provider-badge.vllm   { color: #ef4444; }

.clarification-message-container {
  display: flex;
  justify-content: center;
  margin: 24px 0;
}

.clarification-message {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  color: var(--text-primary);
  padding: 20px;
  border-radius: 16px;
  max-width: 600px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  border-left: 4px solid var(--accent-primary);
  position: relative;
  overflow: hidden;
}

/* Add subtle accent background */
.clarification-message::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--accent-gradient);
  opacity: 0.03;
  pointer-events: none;
}

[data-theme="dark"] .clarification-message {
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .clarification-message::before {
  opacity: 0.05;
}

.clarification-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  font-weight: 600;
  font-size: 14px;
  color: var(--accent-primary);
  position: relative;
  z-index: 1;
}

.clarification-message p {
  margin: 0 0 16px 0;
  line-height: 1.6;
  font-size: 15px;
  color: var(--text-secondary);
  position: relative;
  z-index: 1;
}

.clarification-suggestions {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border-primary);
  position: relative;
  z-index: 1;
}

.suggestions-label {
  font-size: 13px;
  margin-bottom: 12px;
  color: var(--text-secondary);
  font-weight: 500;
}

.suggestions-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.suggestion-button {
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  color: var(--text-primary);
  padding: 12px 16px;
  border-radius: 12px;
  cursor: pointer;
  text-align: left;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.suggestion-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--accent-primary);
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

.suggestion-button:hover {
  border-color: var(--accent-primary);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.suggestion-button:hover::before {
  opacity: 0.05;
}

.suggestion-button:hover {
  color: var(--accent-primary);
}

[data-theme="dark"] .suggestion-button:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .suggestion-button:hover::before {
  opacity: 0.1;
}

.suggestion-button:active {
  transform: translateY(0);
}

.dropdown-arrow {
  color: var(--text-secondary);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.dropdown-arrow.rotated {
  transform: rotate(180deg);
}

.provider-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 220px;
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: 12px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
  z-index: 1000;
  overflow: hidden;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

[data-theme="dark"] .provider-dropdown-menu {
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

.provider-option {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border: none;
  background: none;
  cursor: pointer;
  transition: background-color 0.2s ease;
  text-align: left;
}

.provider-option:hover:not(.selected) {
  background: var(--bg-secondary);
}

.provider-option.selected {
  background: var(--feature-bg);
  cursor: default;
}

.provider-option-icon {
  color: var(--accent-primary);
  flex-shrink: 0;
}

.provider-option-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.provider-option-header {
  display: flex;
  align-items: center;
  gap: 8px;
}

.provider-option-name {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 13px;
}

.provider-option-badge {
  font-size: 9px;
  padding: 2px 6px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.provider-option-badge.gemini {
  background: rgba(66, 133, 244, 0.15);
  color: #4285f4;
}

.provider-option-badge.ollama {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
}

.provider-option-badge.vllm {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
}

.provider-option-description {
  font-size: 11px;
  color: var(--text-tertiary);
}

.provider-option-checkmark {
  color: var(--accent-primary);
  font-weight: bold;
  font-size: 12px;
}

.mobile-menu-button {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: none;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  align-items: center;
  justify-content: center;
}

.mobile-menu-button:hover {
  background: var(--accent-primary);
  color: white;
}

/* Responsive Design for Chat Page */
@media (max-width: 768px) {
  .floating-header {
    padding: 12px 16px;
    flex-wrap: nowrap; 
    gap: 8px;
  }
  
  .header-left {
    gap: 12px;
    flex: 0; /* Don't let it grow */
    min-width: 0;
  }
  
  /* Hide brand elements on mobile to reduce clutter */
  .header-left .modern-home-btn,
  .header-left .header-brand {
    display: none;
  }
  
  .header-right {
    gap: 8px;
    flex: 1; /* Let header-right take available space */
    justify-content: flex-end; /* Align items to the right */
    flex-shrink: 0;
  }
  
  /* Ensure mobile menu button is visible */
  .mobile-menu-button {
    display: flex;
  }
  
  .main-content {
    padding: 24px 12px 120px 12px; /* Adjusted for mobile */
  }
  
  .welcome-state {
    min-height: 50vh;
  }
  
  .messages-scroll {
    padding: 16px;
    padding-bottom: 30px;
  }
  
  .floating-input-area,
  .floating-input-area.sidebar-collapsed {
    bottom: 10px;
    left: 0;
  }
  
  .floating-input-area .reply-banner {
    margin: 0 12px 12px 12px;
  }
  
  .orchestrator-content {
    max-width: none;
  }
  
  .system-content {
    max-width: 90%;
    padding: 10px 16px;
    font-size: 13px;
  }


  .main-chat-area {
    margin-left: 0;
  }

  .main-chat-area.sidebar-collapsed {
    margin-left: 0;
  }

  .clarification-message {
    margin: 0 16px;
    max-width: none;
    padding: 16px;
  }
  
  .clarification-header {
    font-size: 13px;
  }
  
  .clarification-message p {
    font-size: 14px;
  }
  
  .suggestion-button {
    padding: 10px 14px;
    font-size: 12px;
  }

  .brand-text h1 {
    font-size: 16px;
  }
  
  .brand-text p {
    font-size: 11px;
  }

  .session-title-display{
    display: none;
  }

}