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

:root {
  /* Design System Colors */
  --bg-primary: #f9fafb;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f3f4f6;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --primary: #0891b2;
  --primary-hover: #0e7490;
  --accent: #f59e0b;
  --accent-hover: #d97706;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --border: #e5e7eb;
  --border-light: #f3f4f6;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1),
    0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1),
    0 8px 10px -6px rgb(0 0 0 / 0.1);
  --radius: 8px;
  --radius-sm: 4px;
  --radius-lg: 12px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --muted-foreground: #9ca3af;
  --foreground: #1f2937;
  --card: #ffffff;
}

[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --primary: #0ea5e9;
  --primary-hover: #0284c7;
  --accent: #fbbf24;
  --accent-hover: #f59e0b;
  --border: #334155;
  --border-light: #475569;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3),
    0 4px 6px -4px rgb(0 0 0 / 0.3);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.3),
    0 8px 10px -6px rgb(0 0 0 / 0.3);
  --radius: 8px;
  --radius-sm: 4px;
  --radius-lg: 12px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --muted-foreground: #94a3b8;
  --foreground: #f1f5f9;
  --card: #1e293b;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

[data-theme="dark"] .header {
  background: rgba(15, 23, 42, 0.8);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  max-width: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: "Work Sans", sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--primary);
}

.logo i {
  font-size: 1.75rem;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.theme-toggle {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.5rem;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-secondary);
}

.theme-toggle:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.session-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition);
}

.session-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

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

[data-theme="dark"] .session-btn {
  background: rgba(30, 41, 59, 0.3);
  border: 1px solid rgba(148, 163, 184, 0.2);
}

[data-theme="dark"] .session-btn:hover {
  background: rgba(30, 41, 59, 0.5);
}

/* Main Layout */
.main-container {
  display: grid;
  grid-template-columns: 400px 1fr;
  height: calc(100vh - 73px);
  gap: 0;
  transition: grid-template-columns 0.3s ease;
}

.main-container.centered {
  grid-template-columns: 1fr;
  justify-items: center;
}

.main-container.centered .main-content {
  display: none;
}

.main-container.centered .sidebar {
  max-width: 500px;
  width: 100%;
  border-right: none;
  border-radius: var(--radius-lg);
  margin: 2rem;
}

/* Sidebar */
.sidebar {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border-right: 1px solid rgba(255, 255, 255, 0.1);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

[data-theme="dark"] .sidebar {
  background: rgba(30, 41, 59, 0.1);
  border-right: 1px solid rgba(148, 163, 184, 0.1);
}

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

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

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

.sidebar-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Panels */
.panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  animation: fadeIn 0.3s ease-out;
  transform: translateY(0);
}

[data-theme="dark"] .panel {
  background: var(--bg-tertiary);
}

.panel:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.panel-header {
  background: var(--bg-tertiary);
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.panel-header h3 {
  font-family: "Work Sans", sans-serif;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.panel-header i {
  color: var(--primary);
  font-size: 0.875rem;
}

.panel-content {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Form Elements */
.text-input,
.textarea-input,
.select-input {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.875rem;
  transition: var(--transition);
  font-family: inherit;
}

.text-input:focus,
.textarea-input:focus,
.select-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.1);
}

.textarea-input {
  resize: vertical;
  min-height: 100px;
  line-height: 1.5;
}

.select-input {
  cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border: none;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  font-family: inherit;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover:not(:disabled) {
  background: var(--border);
  transform: translateY(-1px);
}

.btn-accent {
  background: var(--accent);
  color: white;
}

.btn-accent:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-destructive {
  background: var(--danger);
  color: white;
}

.btn-destructive:hover:not(:disabled) {
  background: #dc2626;
  transform: translateY(-1px);
}

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

.btn-outline:hover:not(:disabled) {
  background: var(--bg-tertiary);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: none;
}

.btn-ghost:hover:not(:disabled) {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-large {
  padding: 1rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
}

/* Button Layouts */
.button-row {
  display: flex;
  gap: 0.75rem;
}

.button-row .btn {
  flex: 1;
}

.button-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.button-grid .btn:first-child {
  grid-column: 1 / -1;
}

.input-group {
  display: flex;
  gap: 0.75rem;
}

.input-group .text-input {
  flex: 1;
}

/* Console */
.console-container {
  margin-top: 0.5rem;
}

.console-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.console-output {
  width: 100%;
  height: 120px;
  padding: 0.75rem;
  background: #1a1a1a;
  color: #00ff00;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: "Monaco", "Menlo", "Ubuntu Mono", monospace;
  font-size: 0.75rem;
  line-height: 1.4;
  resize: vertical;
}

/* Version History */
.version-history {
  margin-bottom: 1rem;
}

.version-history-compact {
  margin-bottom: 1rem;
  padding: 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.5rem;
  backdrop-filter: blur(10px);
}

.version-history-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted-foreground);
}

.version-history-header svg {
  color: var(--primary);
}

.select-input-compact {
  width: 100%;
  padding: 0.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.375rem;
  color: var(--foreground);
  font-size: 0.875rem;
  transition: all 0.2s ease;
}

.select-input-compact:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(var(--primary), 0.2);
}

/* Info Panels */
.info-panels {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.info-panel {
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s ease;
}

.info-panel.minimized {
  opacity: 0.7;
}

.info-panel.minimized:not([open]) {
  transform: scale(0.98);
}

.info-panel-dull {
  opacity: 0.8;
}

.info-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  cursor: pointer;
  font-weight: 500;
  color: var(--text-primary);
  transition: all 0.2s ease;
}

.info-header:hover {
  background: var(--bg-tertiary);
  border-color: var(--primary);
}

.info-header i:last-child {
  margin-left: auto;
  transition: transform 0.2s ease;
}

.info-panel[open] .info-header i:last-child {
  transform: rotate(180deg);
}

.info-content {
  padding: 1rem;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-top: none;
  font-size: 0.875rem;
  line-height: 1.6;
  padding-left: 2rem;
}

/* Auto-scroll styles for info panels */
.auto-scroll {
  max-height: 200px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.auto-scroll::-webkit-scrollbar {
  width: 4px;
}

.auto-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.auto-scroll::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}

/* Main Content */
.main-content {
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
  overflow: hidden;
}

.content-header {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
}

[data-theme="dark"] .content-header {
  background: rgba(30, 41, 59, 0.3);
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.view-tabs {
  display: flex;
  background: var(--bg-primary);
  border-radius: var(--radius);
  padding: 0.25rem;
  gap: 0.25rem;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

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

.tab-btn.active {
  background: var(--primary);
  color: white;
  box-shadow: var(--shadow-sm);
}

.content-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.action-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  color: var(--text-primary);
  transform: translateY(-1px);
}

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

[data-theme="dark"] .action-btn {
  background: rgba(30, 41, 59, 0.3);
  border: 1px solid rgba(148, 163, 184, 0.2);
}

[data-theme="dark"] .action-btn:hover {
  background: rgba(30, 41, 59, 0.5);
}

.content-body {
  flex: 1;
  position: relative;
  overflow: hidden;
}

/* Code Editor */
.code-container {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.code-editor-wrapper {
  flex: 1;
  position: relative;
  background: #1e1e1e;
  border-radius: var(--radius);
  margin: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  min-height: 0;
  height: 100%;
  min-height: 500px;
  max-height: calc(100vh - 200px);
}

.monaco-editor-container {
  width: 100%;
  height: 100%;
  min-height: 500px;
  max-height: calc(100vh - 200px);
  overflow: hidden;
}

/* Preview */
.preview-container {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.preview-wrapper {
  flex: 1;
  position: relative;
  background: white;
  border-radius: var(--radius);
  margin: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  min-height: 0;
  height: 100%;
  min-height: 500px;
  max-height: calc(100vh - 200px);
}

.preview-iframe {
  width: 100%;
  height: 100%;
  border: none;
  background: white;
  overflow: auto;
  min-height: 500px;
  max-height: calc(100vh - 200px);
  display: block;
  scrollbar-width: thin;
  scrollbar-color: #888 #f1f1f1;
}

.preview-iframe::-webkit-scrollbar {
  width: 8px;
}

.preview-iframe::-webkit-scrollbar-track {
  background: #f1f1f1;
}

.preview-iframe::-webkit-scrollbar-thumb {
  background: #888;
  border-radius: 4px;
}

.preview-iframe::-webkit-scrollbar-thumb:hover {
  background: #555;
}

.preview-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  z-index: 1;
  pointer-events: none;
}

.preview-iframe:not([src=""]) + .preview-placeholder,
.preview-iframe[srcdoc]:not([srcdoc=""]) + .preview-placeholder {
  display: none;
}

.placeholder-content {
  text-align: center;
  color: var(--text-muted);
}

.placeholder-content i {
  font-size: 3rem;
  color: var(--primary);
  margin-bottom: 1rem;
  opacity: 0.5;
}

.placeholder-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.placeholder-content p {
  font-size: 0.875rem;
  max-width: 300px;
}

/* Utility Classes */
.hidden {
  display: none !important;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .main-container {
    grid-template-columns: 350px 1fr;
  }

  .header-content {
    padding: 1rem;
  }

  .content-header {
    padding: 1rem;
  }
}

@media (max-width: 768px) {
  /* Show hamburger menu on mobile */
  .hamburger-btn {
    display: flex;
  }

  .main-container {
    grid-template-columns: 1fr;
  }

  /* Mobile sidebar as overlay */
  .sidebar {
    position: fixed;
    top: 0;
    left: -100%;
    width: 320px;
    height: 100vh;
    z-index: 200;
    transition: left 0.3s ease;
    border-right: 1px solid var(--border);
    border-bottom: none;
    max-height: none;
  }

  .sidebar.open {
    left: 0;
  }

  .sidebar-overlay.show {
    display: block;
  }

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

  .view-tabs {
    justify-content: center;
  }

  .content-actions {
    justify-content: center;
  }

  /* Hide text labels on mobile for session buttons */
  .session-btn span {
    display: none;
  }

  .session-btn {
    padding: 0.5rem;
    min-width: 40px;
  }

  .followup-float {
    bottom: 1rem;
    right: 1rem;
  }

  .followup-btn {
    width: 48px;
    height: 48px;
    font-size: 1.1rem;
  }
}

@media (max-width: 480px) {
  .header-content {
    padding: 0.75rem 1rem;
  }

  .logo span {
    display: none;
  }

  .sidebar {
    width: 280px;
  }

  .action-btn {
    width: 36px;
    height: 36px;
  }

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

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(0);
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
  70% {
    transform: scale(0.9);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* Focus Styles */
.btn:focus-visible,
.text-input:focus,
.textarea-input:focus,
.select-input:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --border: #000000;
    --text-secondary: #000000;
  }

  [data-theme="dark"] {
    --border: #ffffff;
    --text-secondary: #ffffff;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Particle Background Styles */
.particle-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

#particle-canvas {
  width: 100%;
  height: 100%;
}

/* Glassmorphism Effect */
.glass-effect {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
}

[data-theme="dark"] .glass-effect {
  background: rgba(30, 41, 59, 0.3);
  border: 1px solid rgba(148, 163, 184, 0.2);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

/* Session Popup Styles */
.session-popup,
.followup-popup {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s ease-out;
}

.popup-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(5px);
}

.popup-content {
  position: relative;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  max-width: 500px;
  width: 90%;
  max-height: 80vh;
  overflow: hidden;
  animation: slideInUp 0.3s ease-out;
}

.popup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border);
}

.popup-header h3 {
  font-family: "Work Sans", sans-serif;
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.popup-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius);
  transition: var(--transition);
}

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

.popup-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-height: 60vh;
  overflow-y: auto;
}

/* Floating Follow-up Button */
.followup-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
}

.followup-float.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.followup-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: var(--shadow-lg);
  transition: all 0.2s ease;
}

.followup-btn:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-xl);
}

.followup-tooltip {
  position: absolute;
  bottom: 100%;
  right: 0;
  margin-bottom: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.875rem;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.2s ease;
}

.followup-float:hover .followup-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Sidebar Overlay for Mobile */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 150;
}

/* Hamburger Menu Styles */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 24px;
  height: 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 10;
}

.hamburger-btn span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text-primary);
  border-radius: 1px;
  transition: var(--transition);
}

.hamburger-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger-btn.active span:nth-child(2) {
  opacity: 0;
}

.hamburger-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Added version history styling for content header */
.version-history-header-compact {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-right: 1rem;
}

.version-history-header-compact svg {
  color: var(--primary);
}

.select-input-header {
  padding: 0.375rem 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  color: var(--foreground);
  font-size: 0.875rem;
  min-width: 120px;
  transition: all 0.2s ease;
}

.select-input-header:hover {
  background: rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .select-input-header {
  background: rgba(30, 41, 59, 0.3);
  border: 1px solid rgba(148, 163, 184, 0.2);
}

[data-theme="dark"] .select-input-header:hover {
  background: rgba(30, 41, 59, 0.5);
}

/* File Upload Styles */
.file-upload-container {
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.file-upload-input {
  display: none;
}

.file-upload-label {
  width: 100%;
  text-align: center;
}

.file-upload-label-small {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.file-upload-label-small:hover {
  background: var(--bg-tertiary);
  border-color: var(--primary);
  color: var(--primary);
}

.file-upload-label-small svg {
  width: 16px;
  height: 16px;
}

.file-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-height: 150px;
  overflow-y: auto;
  padding-right: 5px; /* for scrollbar */
}

.file-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0.75rem;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  color: var(--text-secondary);
  animation: fadeIn 0.2s ease-out;
}

.file-item span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-right: 0.5rem;
}

.file-remove-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1rem;
  cursor: pointer;
  padding: 0 0.25rem;
  line-height: 1;
}

.file-remove-btn:hover {
  color: var(--danger);
}