@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;700&family=Material+Icons&display=swap');

:root {
  /* Vintage Windows 95 / Lotus Notes Theme Tokens */
  --color-retro-bg: #D4D0C8;
  --color-retro-panel: #E0DFDB;
  --color-retro-white: #FFFFFF;
  --color-retro-shadow-dark: #404040;
  --color-retro-shadow-light: #808080;
  --color-retro-blue-accent: #000080;
  --color-retro-blue-text: #0000FF;
  
  /* Next-Gen AI & Glassmorphism Tokens */
  --color-modern-purple: #8B5CF6;
  --color-modern-purple-dark: #6D28D9;
  --color-modern-purple-glow: rgba(139, 92, 246, 0.35);
  --color-modern-blue-neon: #3B82F6;
  --color-modern-glass-bg: rgba(255, 255, 255, 0.75);
  --color-modern-glass-border: rgba(255, 255, 255, 0.4);
  --color-modern-text: #1E293B;
  --color-modern-text-light: #64748B;
  
  /* Dimensions & Spacing */
  --header-height: 52px;
  --tabs-height: 38px;
  --sidebar-width: 250px;
  --ai-sidebar-width: 360px;
}

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

body {
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: #557A95; /* Vintage solid blue desktop wallpaper */
  color: #000000;
  overflow: hidden;
  height: 100vh;
  user-select: none;
}

/* --- 3D Retro Borders --- */
.border-3d-outset {
  border: 2px solid;
  border-color: var(--color-retro-white) var(--color-retro-shadow-light) var(--color-retro-shadow-light) var(--color-retro-white);
  box-shadow: inset 1px 1px 0px var(--color-retro-white), inset -1px -1px 0px var(--color-retro-shadow-dark);
}

.border-3d-inset {
  border: 2px solid;
  border-color: var(--color-retro-shadow-light) var(--color-retro-white) var(--color-retro-white) var(--color-retro-shadow-light);
  box-shadow: inset 1px 1px 0px var(--color-retro-shadow-dark), inset -1px -1px 0px var(--color-retro-panel);
}

.border-3d-outset-thin {
  border: 1px solid;
  border-color: var(--color-retro-white) var(--color-retro-shadow-light) var(--color-retro-shadow-light) var(--color-retro-white);
}

.border-3d-inset-thin {
  border: 1px solid;
  border-color: var(--color-retro-shadow-light) var(--color-retro-white) var(--color-retro-white) var(--color-retro-shadow-light);
}

/* --- Retro Window Layout --- */
.desktop-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  width: 100vw;
  padding: 12px;
}

.window-container {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  max-width: 1440px;
  max-height: 900px;
  background-color: var(--color-retro-bg);
  box-shadow: 0px 10px 30px rgba(0, 0, 0, 0.3);
  border-radius: 4px;
  overflow: hidden;
}

/* --- Header / Title Bar --- */
.title-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: var(--header-height);
  background-color: var(--color-retro-blue-accent);
  padding: 0 12px;
  color: var(--color-retro-white);
  font-weight: 600;
  font-size: 15px;
}

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

.title-bar-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Outfit', sans-serif;
  letter-spacing: 0.5px;
}

.title-bar-logo i {
  color: var(--color-retro-white);
  font-size: 20px;
}

.retro-menus {
  display: flex;
  gap: 12px;
  font-size: 13px;
  font-weight: 400;
}

.menu-item {
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 2px;
  transition: background 0.15s ease;
}

.menu-item:hover {
  background-color: rgba(255, 255, 255, 0.15);
}

.title-bar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.ai-search-container {
  position: relative;
  display: flex;
  align-items: center;
  width: 280px;
}

.ai-search-input {
  width: 100%;
  height: 32px;
  padding: 0 12px 0 32px;
  border-radius: 16px;
  border: 1px solid var(--color-modern-glass-border);
  background: rgba(255, 255, 255, 0.15);
  color: var(--color-retro-white);
  font-family: 'Outfit', sans-serif;
  font-size: 13px;
  outline: none;
  transition: all 0.25s ease;
}

.ai-search-input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.ai-search-input:focus {
  background: var(--color-retro-white);
  color: var(--color-modern-text);
  box-shadow: 0 0 10px rgba(139, 92, 246, 0.4);
}

.ai-search-container i {
  position: absolute;
  left: 10px;
  font-size: 16px;
  color: rgba(255, 255, 255, 0.6);
  pointer-events: none;
}

.ai-search-input:focus + i {
  color: var(--color-modern-purple);
}

.header-actions {
  display: flex;
  gap: 8px;
}

.header-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: 50%;
  color: var(--color-retro-white);
  cursor: pointer;
  transition: all 0.25s ease;
}

.header-btn:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: scale(1.05);
}

/* --- Tabs Strip (Workspace) --- */
.tabs-strip {
  display: flex;
  align-items: flex-end;
  height: var(--tabs-height);
  background-color: var(--color-retro-panel);
  border-bottom: 2px solid var(--color-retro-shadow-light);
  padding: 0 12px;
  gap: 4px;
}

.workspace-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border-top-left-radius: 4px;
  border-top-right-radius: 4px;
  transition: all 0.1s ease;
  user-select: none;
}

.workspace-tab.inactive {
  background-color: var(--color-retro-bg);
  border: 1px solid var(--color-retro-shadow-light);
  border-bottom: none;
  margin-bottom: 0px;
}

.workspace-tab.inactive:hover {
  background-color: #ECEAE6;
}

.workspace-tab.active {
  background-color: var(--color-retro-bg);
  border: 2px solid;
  border-color: var(--color-retro-white) var(--color-retro-shadow-light) transparent var(--color-retro-white);
  margin-bottom: -2px;
  z-index: 10;
  position: relative;
  font-weight: 600;
}

.workspace-tab i {
  font-size: 16px;
  color: var(--color-retro-blue-accent);
}

/* --- Main Layout Grid --- */
.main-viewport {
  display: flex;
  flex: 1;
  height: calc(100vh - var(--header-height) - var(--tabs-height) - 24px);
  overflow: hidden;
  background-color: var(--color-retro-bg);
  padding: 8px;
  gap: 8px;
}

/* --- Left Navigation Sidebar --- */
.left-sidebar {
  display: flex;
  flex-direction: column;
  width: var(--sidebar-width);
  height: 100%;
  background-color: var(--color-retro-panel);
  padding: 12px;
  gap: 16px;
}

.sidebar-title-section {
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-bottom: 1px solid var(--color-retro-shadow-light);
  padding-bottom: 8px;
}

.sidebar-title-section h3 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.8px;
  color: var(--color-retro-shadow-light);
}

.sidebar-title-section span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--color-retro-blue-accent);
}

.nav-list {
  display: flex;
  flex-direction: column;
  list-style: none;
  gap: 4px;
  flex: 1;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
}

.nav-item i {
  font-size: 18px;
  color: #c6a15c; /* Gold folder color */
}

.nav-item:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

.nav-item.active {
  background-color: var(--color-retro-blue-accent);
  color: var(--color-retro-white);
}

.nav-item.active i {
  color: var(--color-retro-white);
}

.sidebar-footer {
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-top: 1px solid var(--color-retro-shadow-light);
  padding-top: 8px;
}

/* --- Middle Content Split-Pane --- */
.middle-content {
  display: flex;
  flex-direction: column;
  flex: 1;
  height: 100%;
  gap: 8px;
}

/* Document Grid Table */
.document-grid-container {
  display: flex;
  flex-direction: column;
  height: 38%;
  background-color: var(--color-retro-white);
  overflow: hidden;
}

.grid-header {
  display: grid;
  grid-template-columns: 120px 220px 1fr;
  background-color: var(--color-retro-panel);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-retro-shadow-dark);
  border-bottom: 2px solid var(--color-retro-shadow-light);
  user-select: none;
}

.grid-col-header {
  padding: 8px 12px;
  border-right: 1px solid var(--color-retro-shadow-light);
}

.grid-rows-scroll {
  flex: 1;
  overflow-y: auto;
}

.grid-row {
  display: grid;
  grid-template-columns: 120px 220px 1fr;
  font-size: 13px;
  color: #000000;
  cursor: pointer;
  transition: all 0.1s ease;
  border-bottom: 1px solid #ECEAE6;
}

.grid-row:hover {
  background-color: #E2E8F0;
}

.grid-row.selected {
  background-color: var(--color-retro-blue-accent) !important;
  color: var(--color-retro-white) !important;
}

.grid-cell {
  padding: 8px 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Document Preview Panel */
.document-preview-container {
  display: flex;
  flex-direction: column;
  flex: 1;
  background-color: #FDFBF7; /* Beige paper background */
  overflow: hidden;
}

.preview-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 38px;
  background-color: var(--color-retro-panel);
  padding: 0 12px;
  border-bottom: 1px solid var(--color-retro-shadow-light);
}

.preview-doc-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-retro-shadow-dark);
}

.btn-export {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  background-color: var(--color-retro-bg);
  cursor: pointer;
  outline: none;
}

.preview-content-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  color: var(--color-modern-text);
  line-height: 1.6;
}

.doc-header {
  border-bottom: 2px dashed #E2E8F0;
  padding-bottom: 12px;
}

.doc-header h2 {
  font-size: 20px;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 4px;
}

.doc-ref-id {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--color-retro-blue-accent);
}

.doc-body-text {
  font-size: 14px;
}

/* Tabular Spreadsheet Grid Inside Preview */
.spreadsheet-container {
  margin-top: 12px;
  overflow-x: auto;
  border-radius: 4px;
  border: 1px solid #E2E8F0;
}

.spreadsheet-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  text-align: left;
}

.spreadsheet-table th {
  background-color: var(--color-retro-panel);
  font-weight: 600;
  color: var(--color-modern-text);
  padding: 8px 12px;
  border-bottom: 2px solid var(--color-retro-shadow-light);
  border-right: 1px solid #CBD5E1;
}

.spreadsheet-table td {
  padding: 8px 12px;
  border-bottom: 1px solid #E2E8F0;
  border-right: 1px solid #E2E8F0;
  background-color: var(--color-retro-white);
  transition: all 0.25s ease;
}

/* GLOW HIGHLIGHT ANIMATION KEYFRAMES */
@keyframes glow-pulse {
  0% {
    background-color: rgba(59, 130, 246, 0.15);
    box-shadow: inset 0 0 4px rgba(59, 130, 246, 0.4);
  }
  50% {
    background-color: rgba(59, 130, 246, 0.35);
    box-shadow: inset 0 0 15px rgba(59, 130, 246, 0.8), 0 0 8px rgba(59, 130, 246, 0.5);
  }
  100% {
    background-color: rgba(59, 130, 246, 0.15);
    box-shadow: inset 0 0 4px rgba(59, 130, 246, 0.4);
  }
}

.spreadsheet-row-highlight td {
  animation: glow-pulse 2s infinite ease-in-out;
  border-top: 2px solid var(--color-modern-blue-neon) !important;
  border-bottom: 2px solid var(--color-modern-blue-neon) !important;
  color: #000000 !important;
  font-weight: 600;
}

.spreadsheet-row-highlight td:first-child {
  border-left: 2px solid var(--color-modern-blue-neon) !important;
}

.spreadsheet-row-highlight td:last-child {
  border-right: 2px solid var(--color-modern-blue-neon) !important;
}

.status-badge {
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
}

.status-verified {
  background-color: #DCFCE7;
  color: #166534;
}

.status-action {
  background-color: #FEE2E2;
  color: #991B1B;
}

.status-archived {
  background-color: #F1F5F9;
  color: #475569;
}

/* --- Right AI Chat Sidebar (Glassmorphism) --- */
.ai-sidebar {
  display: flex;
  flex-direction: column;
  width: var(--ai-sidebar-width);
  height: 100%;
  background: var(--color-modern-glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-left: 1px solid var(--color-modern-glass-border);
  box-shadow: -5px 0 25px rgba(0, 0, 0, 0.05);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  z-index: 50;
  position: relative;
}

.ai-sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  border-bottom: 1px solid var(--color-modern-glass-border);
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.05) 0%, rgba(59, 130, 246, 0.05) 100%);
}

.ai-header-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

.ai-icon-pulse {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--color-modern-purple);
  border-radius: 50%;
  color: var(--color-retro-white);
  box-shadow: 0 0 10px var(--color-modern-purple-glow);
  position: relative;
}

.ai-icon-pulse::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 2px solid var(--color-modern-purple);
  animation: pulse-ring 2s infinite ease-out;
  opacity: 0;
}

@keyframes pulse-ring {
  0% { transform: scale(1); opacity: 0.5; }
  100% { transform: scale(1.4); opacity: 0; }
}

.ai-title-text h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-modern-text);
  letter-spacing: 0.5px;
}

.ai-title-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  font-weight: 600;
  color: #10B981;
}

.status-dot {
  width: 6px;
  height: 6px;
  background-color: #10B981;
  border-radius: 50%;
  animation: blink 1.5s infinite ease-in-out;
}

@keyframes blink {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

.chat-history-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Chat Message Bubbles */
.chat-bubble {
  display: flex;
  flex-direction: column;
  max-width: 85%;
  padding: 12px 14px;
  border-radius: 14px;
  font-size: 13.5px;
  line-height: 1.5;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
}

.chat-bubble.user {
  align-self: flex-end;
  background-color: var(--color-retro-white);
  color: var(--color-modern-text);
  border-bottom-right-radius: 2px;
  border: 1px solid #E2E8F0;
}

.chat-bubble.ai {
  align-self: flex-start;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.08) 0%, rgba(59, 130, 246, 0.04) 100%);
  color: var(--color-modern-text);
  border-bottom-left-radius: 2px;
  border: 1px solid rgba(139, 92, 246, 0.25);
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.05);
}

.message-sender {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.chat-bubble.user .message-sender {
  color: var(--color-modern-text-light);
  text-align: right;
}

.chat-bubble.ai .message-sender {
  color: var(--color-modern-purple-dark);
}

/* INTERACTIVE CITATION LINKS */
.citation-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background-color: var(--color-modern-purple-light);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 11.5px;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  color: var(--color-modern-purple-dark);
  cursor: pointer;
  margin-top: 6px;
  transition: all 0.2s ease;
  user-select: none;
}

.citation-link:hover {
  background-color: var(--color-modern-purple);
  color: var(--color-retro-white);
  box-shadow: 0 0 8px var(--color-modern-purple-glow);
  transform: translateY(-0.5px);
}

.citation-link i {
  font-size: 12px;
}

/* Chat Input Bar */
.chat-input-area {
  padding: 12px;
  border-top: 1px solid var(--color-modern-glass-border);
  background: rgba(255, 255, 255, 0.5);
  display: flex;
  gap: 8px;
  align-items: center;
}

.chat-textbox-container {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}

.chat-input-field {
  width: 100%;
  height: 38px;
  padding: 0 12px;
  border: 2px solid var(--color-retro-shadow-light);
  background: var(--color-retro-white);
  font-family: 'Outfit', sans-serif;
  font-size: 13px;
  color: #000000;
  outline: none;
  border-radius: 0; /* Keep it retro-flat */
  transition: border-color 0.2s ease;
}

.chat-input-field:focus {
  border-color: var(--color-modern-purple);
  box-shadow: 0 0 8px var(--color-modern-purple-glow);
}

.btn-send {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background-color: var(--color-modern-purple);
  border: none;
  color: var(--color-retro-white);
  cursor: pointer;
  transition: all 0.2s ease;
  border-radius: 4px;
}

.btn-send:hover {
  background-color: var(--color-modern-purple-dark);
  box-shadow: 0 0 10px var(--color-modern-purple-glow);
  transform: scale(1.03);
}

.btn-send i {
  font-size: 18px;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 16px;
  height: 16px;
}

::-webkit-scrollbar-track {
  background: var(--color-retro-bg);
  box-shadow: inset 1px 1px 0px var(--color-retro-shadow-dark), inset -1px -1px 0px var(--color-retro-white);
}

::-webkit-scrollbar-thumb {
  background: var(--color-retro-panel);
  border: 2px solid var(--color-retro-bg);
  box-shadow: inset 1px 1px 0px var(--color-retro-white), inset -1px -1px 0px var(--color-retro-shadow-dark);
}

::-webkit-scrollbar-thumb:active {
  background: var(--color-retro-bg);
}