frontend-react/src/App.css

@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400..700;1,400..700&family=Plus+Jakarta+Sans:ital,wght@0,200..800;1,200..800&display=swap');

:root {
  /* Premium Rich Dark Palette - Midnight Amethyst Theme */
  --bg-deep: #05020c;
  --bg-surface: #0c081f;
  --bg-surface-elevated: #17113b;
  --sidebar-bg: #080515;

  /* Jewel Primary & Accents - Royalty Amethyst and Empire Amber/Gold */
  --primary: #a855f7;
  --primary-glow: rgba(168, 85, 247, 0.45);
  --accent: #f59e0b;
  --accent-glow: rgba(245, 158, 11, 0.35);

  /* Text */
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #71717a;

  /* Premium Glassmorphism */
  --glass-bg: rgba(12, 8, 31, 0.75);
  --glass-border: rgba(168, 85, 247, 0.16);
  --glass-blur: blur(16px);

  /* Utility */
  --border-radius: 14px;
  --transition-fast: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.45s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 4px 8px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 12px 24px -3px rgba(0, 0, 0, 0.4);
}

* {
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-deep);
  color: var(--text-primary);
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  overflow: hidden;
  height: 100vh;
  height: 100dvh;
}

h1,
h2,
h3,
.brand-font {
  font-family: 'Lora', serif;
}

/* Layout */
.App {
  display: flex;
  height: 100vh;
  height: 100dvh;
  width: 100vw;
  background: radial-gradient(circle at 50% -20%, rgba(168, 85, 247, 0.15) 0%, rgba(245, 158, 11, 0.04) 40%, var(--bg-deep) 80%);
}

.App.blurred {
  filter: blur(8px);
  pointer-events: none;
}

/* Sidebar Styling */
.sidebar {
  width: 280px;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-slow), width var(--transition-slow);
  z-index: 100;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

.sidebar.collapsed {
  width: 0;
  border-right: none;
}

.sidebar-content {
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 280px;
  /* Fixed width for content to prevent squishing */
  padding: 1.5rem 1rem;
}

.sidebar-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
  padding: 0 0.5rem;
}

.sidebar-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
  background: linear-gradient(135deg, var(--accent) 0%, #d946ef 50%, var(--primary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.new-chat-btn {
  width: 100%;
  padding: 0.875rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 12px var(--primary-glow);
  margin-bottom: 1.5rem;
}

.new-chat-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px var(--primary-glow);
  background: #4f46e5;
}

.document-list-container {
  flex: 1;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--glass-border) transparent;
}

.document-list-container::-webkit-scrollbar {
  width: 6px;
}

.document-list-container::-webkit-scrollbar-thumb {
  background-color: var(--glass-border);
  border-radius: 10px;
}

.list-section {
  margin-bottom: 2rem;
}

.list-section h3 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  padding-left: 0.5rem;
}

.session-item,
.doc-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border-radius: 10px;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
  position: relative;
  border: 1px solid transparent;
}

.session-item:hover,
.doc-item:hover {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  border-color: var(--glass-border);
}

.session-item.active {
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary);
  border-color: rgba(99, 102, 241, 0.2);
}

.session-title,
.doc-name {
  flex: 1;
  font-size: 0.875rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.doc-info {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
}

.doc-date {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.delete-btn {
  opacity: 0;
  transition: opacity var(--transition-fast);
  padding: 4px;
  color: var(--text-muted);
  background: none;
  border: none;
  cursor: pointer;
}

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

.delete-btn:hover {
  color: #ef4444;
}

.sidebar-footer {
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px solid var(--glass-border);
}

.user-profile {
  display: flex;
  flex-direction: column;
  padding: 0.75rem;
  border-radius: var(--border-radius);
  background: transparent;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.user-profile:hover {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--glass-border);
}

.user-profile.expanded {
  background: var(--bg-surface-elevated);
  border-color: var(--primary-glow);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25);
}

.user-profile-header {
  display: flex;
  align-items: center;
  width: 100%;
  gap: 0.75rem;
}

.user-avatar {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 0 10px rgba(168, 85, 247, 0.3);
}

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

.username-display {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-profile-details {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  animation: fadeInFast 0.2s ease-out;
}

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

.user-detail-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.detail-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.detail-value {
  font-size: 0.8rem;
  color: var(--text-secondary);
  word-break: break-all;
}

.logout-action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 8px;
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%) !important;
  box-shadow: 0 4px 10px rgba(239, 68, 68, 0.2) !important;
}

.logout-action-btn:hover {
  background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%) !important;
  box-shadow: 0 6px 15px rgba(239, 68, 68, 0.35) !important;
  transform: translateY(-1px);
}

/* Main Chat Area */
.chat-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
  background: transparent;
  min-width: 0;
}

.chat-header {
  height: calc(4rem + env(safe-area-inset-top, 0px));
  padding-top: env(safe-area-inset-top, 0px);
  padding-left: 2rem;
  padding-right: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10, 12, 16, 0.4);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  z-index: 50;
}

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

.sidebar-toggle {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: all var(--transition-fast);
}

.sidebar-toggle:hover {
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
}

.chat-header h1 {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0;
  color: var(--text-primary);
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  scrollbar-width: thin;
}

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

.chat-messages::-webkit-scrollbar-thumb {
  background: var(--glass-border);
  border-radius: 10px;
}

/* Message Bubbles */
.message-bubble {
  max-width: 80%;
  display: flex;
  flex-direction: column;
  padding: 1.25rem;
  border-radius: 1.25rem;
  font-size: 0.95rem;
  line-height: 1.6;
  position: relative;
  animation: messageIn 0.3s ease-out forwards;
}

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.message-bubble.user {
  align-self: flex-end;
  background: var(--primary);
  color: white;
  border-bottom-right-radius: 4px;
  box-shadow: 0 4px 15px var(--primary-glow);
}

.message-bubble.assistant {
  align-self: flex-start;
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
  border-bottom-left-radius: 4px;
  border: 1px solid var(--glass-border);
  display: flex !important;
  flex-direction: row !important;
  align-items: flex-start;
  gap: 1rem;
  font-size: 0.88rem; /* Smaller font size for assistant responses */
}

.message-bubble.error {
  align-self: flex-start;
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.08) 0%, rgba(239, 68, 68, 0.03) 100%);
  color: #fca5a5;
  border-bottom-left-radius: 4px;
  border: 1px solid rgba(239, 68, 68, 0.22);
  padding: 1rem 1.25rem;
  max-width: 85%;
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.08);
}

.error-body {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  width: 100%;
}

.error-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: #f87171;
  font-size: 0.9rem;
}

.error-header-icon {
  flex-shrink: 0;
  color: #f87171;
}

.error-details {
  font-size: 0.85rem;
  color: #fca5a5;
  padding-left: 0.25rem;
}

.error-details ul {
  margin: 0;
  padding-left: 1.25rem;
}

.error-details li {
  margin-bottom: 0.25rem;
  line-height: 1.4;
  word-break: break-all;
}

.error-details li:last-child {
  margin-bottom: 0;
}

.message-content {
  flex: 1;
  min-width: 0;
}

/* Premium Markdown Formatting in Chat */
.message-content p {
  margin: 0 0 0.8rem 0;
  line-height: 1.62;
}

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

.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4 {
  color: var(--text-primary);
  font-weight: 700;
  margin: 1.25rem 0 0.6rem 0;
  line-height: 1.3;
  font-family: 'Plus Jakarta Sans', sans-serif;
}

.message-content h1 { font-size: 1.15rem; }
.message-content h2 { font-size: 1.05rem; }
.message-content h3 { font-size: 0.95rem; }

.message-content ul,
.message-content ol {
  margin: 0 0 0.8rem 0;
  padding-left: 1.25rem;
}

.message-content li {
  margin-bottom: 0.4rem;
  line-height: 1.6;
}

.message-content li:last-child {
  margin-bottom: 0;
}

.message-content strong {
  color: var(--accent); /* Elegant Empire Gold accent color for key legal citations and bold terms */
  font-weight: 600;
}

.message-content blockquote {
  margin: 0.8rem 0;
  padding: 0.5rem 1rem;
  border-left: 3px solid var(--primary);
  background: rgba(168, 85, 247, 0.05);
  border-radius: 6px;
  font-style: italic;
  color: var(--text-secondary);
}

.message-content pre {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--glass-border);
  padding: 0.75rem 1rem;
  border-radius: 10px;
  overflow-x: auto;
  margin: 0.8rem 0;
}

.message-content code {
  font-family: 'Fira Code', Consolas, Monaco, monospace;
  font-size: 0.8rem;
  background: rgba(255, 255, 255, 0.06);
  padding: 2px 6px;
  border-radius: 4px;
  color: #f8fafc;
}

.message-content pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  color: inherit;
}

.message-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.8rem 0;
  font-size: 0.8rem;
}

.message-content th,
.message-content td {
  padding: 0.6rem 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  text-align: left;
}

.message-content th {
  background: rgba(255, 255, 255, 0.04);
  font-weight: 600;
  color: var(--text-primary);
}

.message-content tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.01);
}

.speak-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
  margin-top: 2px;
}

.speak-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border-color: var(--glass-border);
}

.speak-btn.speaking {
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary);
  border-color: var(--primary);
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% {
    opacity: 1;
  }

  50% {
    opacity: 0.6;
  }

  100% {
    opacity: 1;
  }
}

/* Welcome / Empty state */
.welcome-screen {
  max-width: 580px;
  margin: auto;
  text-align: center;
  padding: 2.5rem 2rem;
  background: rgba(12, 8, 31, 0.4);
  border: 1px solid rgba(168, 85, 247, 0.12);
  border-radius: 24px;
  backdrop-filter: blur(20px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  animation: cardFadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.welcome-screen h2 {
  font-size: 2rem;
  font-weight: 700;
  margin: 0;
  background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-family: 'Lora', serif;
}

.welcome-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0;
  line-height: 1.5;
}

/* System Pills Row */
.system-pills-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  width: 100%;
  margin: 0.25rem 0;
}

.system-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(168, 85, 247, 0.04);
  border: 1px solid rgba(168, 85, 247, 0.15);
  border-radius: 99px;
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: default;
  transition: all var(--transition-fast);
  user-select: none;
}

.system-pill:hover {
  border-color: rgba(168, 85, 247, 0.3);
  background: rgba(168, 85, 247, 0.06);
  color: var(--text-primary);
}

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

/* Start Chat Button */
.start-chat-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 2rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: white;
  background: linear-gradient(135deg, var(--primary) 0%, #7c3aed 100%);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 15px rgba(168, 85, 247, 0.25);
  margin-top: 0.25rem;
}

.start-chat-btn:hover {
  background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
  box-shadow: 0 6px 20px rgba(168, 85, 247, 0.4);
  transform: translateY(-1px);
}

@media (max-width: 768px) {
  .system-pills-row {
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
  }
}

/* Chat Input Bar */
.chat-input-area {
  padding: 1.5rem 2rem 2rem;
  background: linear-gradient(to bottom, transparent, var(--bg-deep));
}

.chat-input-wrapper {
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-surface);
  border: 1px solid var(--glass-border);
  border-radius: 1.25rem;
  padding: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-lg);
  transition: border-color var(--transition-fast);
}

.chat-input-wrapper:focus-within {
  border-color: var(--primary);
}

.chat-input-wrapper input {
  flex: 1;
  min-width: 0; /* Prevent browser min-width from causing flex container overflow */
  background: none;
  border: none;
  padding: 0.75rem;
  color: var(--text-primary);
  font-size: 1rem;
  outline: none;
}

.icon-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  padding: 0.6rem;
  cursor: pointer;
  border-radius: 10px;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-btn:hover:not(:disabled) {
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
}

.send-btn {
  background: var(--primary);
  color: white;
  width: 56px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 10px var(--primary-glow);
  flex-shrink: 0;
}

.send-btn:hover:not(:disabled) {
  transform: scale(1.05);
  background: #4f46e5;
}

.send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

/* Loading Effects */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
}

.loader-ring {
  width: 60px;
  height: 60px;
  border: 3px solid rgba(255, 255, 255, 0.05);
  border-top: 3px solid var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  box-shadow: 0 0 15px var(--primary-glow);
}

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

.loading-dots:after {
  content: ' .';
  animation: dots 1.5s infinite;
}

@keyframes dots {

  0%,
  20% {
    content: ' .';
  }

  40% {
    content: ' ..';
  }

  60% {
    content: ' ...';
  }

  80%,
  100% {
    content: '';
  }
}

/* Unique Split-Screen Auth Page */
.auth-screen {
  display: flex;
  width: 100vw;
  height: 100vh;
  background: #04020a;
  overflow: hidden;
}

.auth-graphic-side {
  flex: 1.2;
  background: radial-gradient(circle at 30% 20%, rgba(168, 85, 247, 0.22) 0%, rgba(245, 158, 11, 0.06) 40%, #04020a 100%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 5rem;
  position: relative;
  border-right: 1px solid rgba(168, 85, 247, 0.1);
  overflow: hidden;
}

.auth-graphic-side::before {
  content: '';
  position: absolute;
  top: -20%;
  left: -20%;
  width: 60%;
  height: 60%;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.15) 0%, transparent 60%);
  filter: blur(80px);
  animation: floatOrb 8s infinite alternate ease-in-out;
}

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(30px, 20px) scale(1.1); }
}

.graphic-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 3.5rem;
  z-index: 10;
}

.graphic-brand-logo {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px rgba(168, 85, 247, 0.35);
  flex-shrink: 0;
}

.graphic-brand-name {
  font-family: 'Outfit', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent) 0%, #d946ef 50%, var(--primary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}

.graphic-content {
  z-index: 10;
  max-width: 550px;
  animation: fadeIn 0.8s ease-out;
}

.graphic-content h2 {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 1.5rem;
  background: linear-gradient(to right, #ffffff, #d8b4fe);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-family: 'Outfit', sans-serif;
}

.graphic-content p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 3rem;
}

.feature-highlights {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.feature-icon-wrapper {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(168, 85, 247, 0.08);
  border: 1px solid rgba(168, 85, 247, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

.feature-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.auth-form-side {
  flex: 1;
  background: #04020a;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem;
  position: relative;
}

.auth-form-side::after {
  content: '';
  position: absolute;
  bottom: -20%;
  right: -20%;
  width: 50%;
  height: 50%;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.06) 0%, transparent 60%);
  filter: blur(80px);
}

.auth-card {
  width: 100%;
  max-width: 490px;
  padding: 3rem;
  background: rgba(12, 8, 31, 0.5);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(168, 85, 247, 0.12);
  border-radius: 24px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  animation: cardFadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 10;
}

@keyframes cardFadeIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.auth-card h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  text-align: center;
  background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.auth-subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 0.9rem;
  line-height: 1.5;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  color: var(--text-muted);
}

.form-group input {
  width: 100%;
  padding: 0.875rem 1rem;
  background: rgba(5, 2, 12, 0.6);
  border: 1px solid rgba(168, 85, 247, 0.15);
  border-radius: 12px;
  color: white;
  outline: none;
  transition: all var(--transition-fast);
}

.form-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(168, 85, 247, 0.15);
}

.auth-btn {
  width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, var(--primary) 0%, #7c3aed 100%);
  color: white;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-top: 1rem;
  box-shadow: 0 4px 15px rgba(168, 85, 247, 0.3);
}

.auth-btn:hover:not(:disabled) {
  background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
  box-shadow: 0 6px 20px rgba(168, 85, 247, 0.45);
  transform: translateY(-1px);
}

.auth-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.toggle-auth {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.toggle-auth span {
  color: var(--primary);
  cursor: pointer;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.toggle-auth span:hover {
  color: #c084fc;
  text-decoration: underline;
}

/* Responsiveness */
@media (max-width: 1024px) {
  .auth-graphic-side {
    display: none;
  }
  .auth-form-side {
    flex: 1;
    padding: 2rem;
  }
}

/* Voice Button recording animation */
.voice-btn.recording {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

.voice-stop-icon {
  width: 12px;
  height: 12px;
  background: currentColor;
  border-radius: 2px;
}

/* Premium Selector Panel (Inspired by ڈیزائن) */
.selector-panel {
  background: var(--bg-surface);
  border: 1px solid var(--glass-border);
  border-radius: 1.5rem;
  max-width: 800px;
  margin: 0 auto 1.5rem;
  padding: 1.5rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  animation: slideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.selector-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding: 0 0.5rem;
}

.selector-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
  color: var(--text-primary);
}

.selector-pagination {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-family: 'Plus Jakarta Sans', sans-serif;
  letter-spacing: 0.05em;
}

.selector-list {
  display: flex;
  flex-direction: column;
  max-height: 220px;
  overflow-y: auto;
}

.selector-item {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  position: relative;
}

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

.selector-item:hover {
  background: rgba(255, 255, 255, 0.03);
}

.selector-item.active {
  background: rgba(99, 102, 241, 0.08);
}

.item-number {
  width: 32px;
  height: 32px;
  background: #1a1d24;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.selector-item.active .item-number {
  background: var(--primary);
  color: white;
  box-shadow: 0 0 10px var(--primary-glow);
}

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

.item-name {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color var(--transition-fast);
}

.selector-item:hover .item-name,
.selector-item.active .item-name {
  color: var(--text-primary);
}

.item-arrow {
  color: var(--text-muted);
  opacity: 0.3;
  transition: all var(--transition-fast);
}

.selector-item:hover .item-arrow,
.selector-item.active .item-arrow {
  opacity: 1;
  color: var(--primary);
  transform: translateX(4px);
}

.selector-footer {
  padding: 1.5rem 0.5rem 0.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: center;
}

.selector-confirm-btn {
  width: 100%;
  padding: 1rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 15px var(--primary-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.selector-confirm-btn:hover {
  background: #4f46e5;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--primary-glow);
}

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

.library-nav-btn {
  width: 100%;
  padding: 0.875rem;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
  margin-bottom: 1.5rem;
}

.library-nav-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border-color: var(--primary-glow);
}

.library-nav-btn.active {
  background: var(--bg-surface-elevated);
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 15px var(--primary-glow);
}

.library-main-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: transparent;
  min-width: 0;
}

.library-container {
  padding: 2rem;
  flex: 1;
  overflow-y: auto;
}

.library-header-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  gap: 1.5rem;
}

.search-bar {
  flex: 1;
  max-width: 500px;
  background: var(--bg-surface);
  border: 1px solid var(--glass-border);
  padding: 0.75rem 1rem;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-muted);
}

.search-bar input {
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 0.95rem;
  flex: 1;
  outline: none;
}

.stat-chip {
  padding: 0.5rem 1rem;
  background: rgba(16, 185, 129, 0.1);
  color: var(--accent);
  border: 1px solid var(--accent-glow);
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.library-table-wrapper {
  background: var(--bg-surface);
  border: 1px solid var(--glass-border);
  border-radius: 1.25rem;
  overflow: hidden;
  overflow-x: auto;
  box-shadow: var(--shadow-lg);
}

.library-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.library-table th {
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  border-bottom: 1px solid var(--glass-border);
}

.library-table td {
  padding: 1.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  font-size: 0.9rem;
  vertical-align: middle;
}

.library-table th:first-child,
.library-table td:first-child {
  max-width: 320px;
}

.doc-primary-cell {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.doc-icon-small {
  width: 32px;
  height: 32px;
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.doc-name {
  font-weight: 500;
  color: var(--text-primary);
}

.library-table .doc-name {
  white-space: normal;
  word-break: break-all;
  overflow-wrap: break-word;
}

.metadata-cell {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
}

.chat-link-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition-fast);
  font-size: 0.85rem;
  max-width: 200px;
}

.chat-link-btn:hover {
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary);
  border-color: var(--primary);
}

.chat-link-btn span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.delete-row-btn {
  background: rgba(239, 68, 68, 0.05);
  border: 1px solid transparent;
  color: var(--text-muted);
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.delete-row-btn:hover {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  border-color: rgba(239, 68, 68, 0.2);
}

.library-loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 5rem;
  gap: 1.5rem;
  color: var(--text-secondary);
}

.empty-library {
  text-align: center;
  padding: 8rem 2rem;
  color: var(--text-secondary);
}

.empty-library h3 {
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}
.message-citation {
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--glass-border);
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-style: italic;
  line-height: 1.4;
  white-space: pre-wrap;
  word-break: break-all;
  overflow-wrap: break-word;
}

.message-content hr {
  border: 0;
  height: 1px;
  background: var(--glass-border);
  margin: 1rem 0;
}

.message-content .highlight-active {
  background: rgba(147, 51, 234, 0.1);
  border-radius: 4px;
}

.message-content .highlight-word {
  background: rgba(147, 51, 234, 0.4);
  color: #fff;
  border-radius: 2px;
  box-shadow: 0 0 10px rgba(147, 51, 234, 0.5);
  padding: 0 2px;
}

mark.highlight-word {
  background: rgba(147, 51, 234, 0.4) !important;
  color: #fff !important;
  border-radius: 2px;
  box-shadow: 0 0 10px rgba(147, 51, 234, 0.5);
  padding: 0 2px;
  text-decoration: none;
}

mark.highlight-sentence {
  background: rgba(147, 51, 234, 0.2) !important;
  color: inherit !important;
  border-radius: 4px;
  box-shadow: 0 0 8px rgba(147, 51, 234, 0.3);
  padding: 0 4px;
  text-decoration: none;
  transition: background 0.3s ease;
}

/* =========================================
   Mobile & Tablet Responsiveness
   ========================================= */
@media (max-width: 768px) {
  /* Make sidebar a drawer on mobile */
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 1000;
    transform: translateX(0);
    box-shadow: 10px 0 30px rgba(0, 0, 0, 0.5);
  }

  .sidebar.collapsed {
    transform: translateX(-100%);
    width: 280px; /* Keep width so content doesn't squish during animation */
  }

  /* Make sure the main app area takes full width when sidebar is overlaying */
  .App {
    position: relative;
  }

  .chat-header, .library-main-container header {
    padding: 0 1rem;
  }

  .chat-messages {
    padding: 1rem;
  }

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

  .chat-input-wrapper {
    padding: 0.25rem;
  }

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

  .welcome-screen {
    margin: 1rem;
    padding: 1.5rem 1rem;
  }

  .library-container {
    padding: 1rem;
  }

  .library-header-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
  }

  .search-bar {
    max-width: 100%;
  }

  /* Table responsiveness (Stacked cards layout) */
  .library-table-wrapper {
    background: transparent;
    border: none;
    box-shadow: none;
    overflow: visible;
  }

  .library-table, 
  .library-table thead, 
  .library-table tbody, 
  .library-table th, 
  .library-table td, 
  .library-table tr {
    display: block;
    width: 100%;
  }

  .library-table thead {
    display: none; /* Hide header on mobile */
  }

  .library-table tr {
    background: var(--bg-surface);
    border: 1px solid var(--glass-border);
    border-radius: 1.25rem;
    padding: 1.25rem;
    margin-bottom: 1.25rem;
    box-shadow: var(--shadow-sm);
  }

  .library-table td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.65rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    font-size: 0.85rem;
    white-space: normal;
  }

  .library-table td:last-child {
    border-bottom: none;
    padding-bottom: 0;
    margin-top: 0.25rem;
  }

  /* Document cell acts as header of the card */
  .library-table td[data-label="Document"] {
    display: block;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 0.75rem;
    margin-bottom: 0.25rem;
  }

  .library-table td[data-label="Document"]::before {
    display: none;
  }

  .doc-primary-cell {
    width: 100%;
  }

  .doc-name {
    white-space: normal;
    word-break: break-all;
    font-size: 0.95rem;
  }

  /* Add labels on the left of each cell */
  .library-table td::before {
    content: attr(data-label);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }

  .sidebar-close-btn {
    display: flex !important;
  }

  .sidebar-backdrop {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    z-index: 999;
    animation: fadeIn 0.3s ease;
  }

  .auth-screen {
    overflow-y: auto;
    height: auto;
    min-height: 100vh;
  }
}

/* Sidebar close button hidden on desktop */
.sidebar-close-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  margin-left: auto;
  transition: all var(--transition-fast);
}

.sidebar-close-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  border-color: rgba(168, 85, 247, 0.4);
  transform: scale(1.05);
}

/* Sidebar backdrop hidden on desktop */
.sidebar-backdrop {
  display: none;
}

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

/* Extra small mobile screens */
@media (max-width: 480px) {
  .auth-form-side {
    padding: 1.5rem 1rem;
  }

  .auth-card {
    padding: 1.75rem 1.25rem;
    border-radius: 16px;
  }

  .auth-card h1 {
    font-size: 1.6rem;
  }

  .welcome-screen h2 {
    font-size: 1.6rem;
  }

  .welcome-subtitle {
    font-size: 0.85rem;
  }

  .system-pill {
    padding: 0.4rem 0.8rem;
    font-size: 0.75rem;
  }
}

/* Background Embedding Status & Mini-Spinner */
.embedding-status {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--bg-surface-elevated);
  border: 1px solid rgba(168, 85, 247, 0.2);
  border-radius: 12px;
  margin-bottom: 0.75rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  animation: pulse-border 2s infinite ease-in-out;
}

.mini-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(168, 85, 247, 0.15);
  border-top: 2px solid var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes pulse-border {
  0%, 100% { border-color: rgba(168, 85, 247, 0.2); }
  50% { border-color: rgba(168, 85, 247, 0.55); }
}