/* Modern Web Design System for Plotter v2 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&family=Outfit:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,700;1,400&family=Vazirmatn:wght@300;400;500;700&display=swap');

:root {
  /* Fonts */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Light Theme Variables */
  --bg-color: #fafafa;
  --panel-bg: #ffffff;
  --panel-border: #e5e5e5;
  --text-primary: #171717;
  --text-secondary: #737373;
  --text-muted: #a3a3a3;
  --accent-color: #000000;
  --accent-hover: #262626;
  --accent-bg-subtle: #f5f5f5;
  --grid-dot: #e5e5e5;
  --input-focus-ring: rgba(0, 0, 0, 0.05);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] {
  /* Dark Theme Variables */
  --bg-color: #0a0a0a;
  --panel-bg: #121212;
  --panel-border: #262626;
  --text-primary: #f5f5f5;
  --text-secondary: #a3a3a3;
  --text-muted: #525252;
  --accent-color: #ffffff;
  --accent-hover: #e5e5e5;
  --accent-bg-subtle: #1a1a1a;
  --grid-dot: #222222;
  --input-focus-ring: rgba(255, 255, 255, 0.05);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-color);
  color: var(--text-primary);
  height: 100vh;
  overflow: hidden;
  display: flex;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

.app-container {
  display: flex;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

/* Left Photoshop-Style Toolbox */
.left-toolbar {
  width: 56px;
  height: 100%;
  background-color: var(--panel-bg);
  border-right: 1px solid var(--panel-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px 0;
  gap: 12px;
  z-index: 10;
  flex-shrink: 0;
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.toolbar-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  gap: 8px;
}

.toolbar-divider {
  width: 24px;
  height: 1px;
  background-color: var(--panel-border);
  margin: 4px 0;
  flex-shrink: 0;
}

.logo-icon {
  width: 36px;
  height: 36px;
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--accent-color);
}

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

.tool-btn {
  width: 36px;
  height: 36px;
  border-radius: 4px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all var(--transition-fast);
  padding: 0;
  position: relative;
}

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

.tool-btn:hover:not(:disabled) {
  background-color: var(--accent-bg-subtle);
  color: var(--text-primary);
}

.tool-btn:disabled {
  opacity: 0.25;
  cursor: not-allowed;
}

.tool-btn.active {
  background-color: var(--accent-color);
  color: var(--panel-bg);
  border-color: var(--accent-color);
}

/* Tooltips */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: auto;
  left: 125%;
  top: 50%;
  transform: translateY(-50%) translateX(-4px);
  background-color: var(--text-primary);
  color: var(--bg-color);
  font-size: 10px;
  font-family: var(--font-mono);
  padding: 4px 8px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-fast);
  z-index: 100;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--panel-border);
}

[data-tooltip]:hover::after {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

.zoom-display {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  color: var(--text-secondary);
  user-select: none;
  text-align: center;
  display: inline-block;
  margin: 2px 0;
}

/* Canvas Viewport (Restored Dot Grid Pattern from Flowchart) */
.canvas-container {
  flex: 1;
  height: 100%;
  position: relative;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.canvas-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-color);
  background-image: radial-gradient(var(--grid-dot) 1.5px, transparent 1.5px);
  background-size: 24px 24px;
  z-index: 1;
  transition: background-color var(--transition-normal);
}

.canvas-viewport {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  overflow: hidden; /* Scrollbars are handled via transform translate panning */
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: grab; /* Grab hand visual for Photoshop panning */
  user-select: none;
}

.canvas-viewport:active {
  cursor: grabbing; /* Grabbing visual when dragging canvas */
}

/* Plotter container box removed completely - floats transparently directly on dots! */
#preview-container {
  position: absolute;
  left: 0;
  top: 0;
  background-color: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
  transform-origin: 0 0;
  display: block;
}

#preview-container svg {
  display: block;
  max-height: 85vh;
  background-color: transparent !important; /* Forces transparency on plot */
}

/* Right Sidebar Inspector */
.right-sidebar {
  width: 320px;
  height: 100%;
  background-color: var(--panel-bg);
  border-left: 1px solid var(--panel-border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  z-index: 10;
  box-shadow: var(--shadow-sm);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

/* Sidebar Tab Headers */
.sidebar-tabs {
  display: flex;
  border-bottom: 1px solid var(--panel-border);
  background-color: var(--panel-bg);
  flex-shrink: 0;
}

.tab-btn {
  flex: 1;
  padding: 12px 2px;
  font-size: 9px;
  font-weight: 600;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 4px;
  transition: all var(--transition-fast);
}

.tab-btn svg {
  width: 12px;
  height: 12px;
}

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

.tab-btn.active {
  color: var(--text-primary);
  border-bottom-color: var(--text-primary);
}

/* Tab Contents */
.sidebar-tab-content {
  display: none;
  flex: 1;
  overflow-y: auto;
  padding: 20px;
}

.sidebar-tab-content::-webkit-scrollbar {
  width: 4px;
}
.sidebar-tab-content::-webkit-scrollbar-track {
  background: transparent;
}
.sidebar-tab-content::-webkit-scrollbar-thumb {
  background: var(--panel-border);
  border-radius: 2px;
}

.sidebar-tab-content.active {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Section Title */
.input-section-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.input-field-wrapper {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.input-field-wrapper label {
  font-size: 11px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.text-input {
  width: 100%;
  padding: 9px 12px;
  font-size: 13px;
  font-family: var(--font-sans);
  background-color: var(--bg-color);
  border: 1px solid var(--panel-border);
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.text-input:focus {
  border-color: var(--text-primary);
  box-shadow: 0 0 0 3px var(--input-focus-ring);
}

.text-input::placeholder {
  color: var(--text-muted);
  font-style: italic;
  font-size: 11px;
}

/* Color Picker Container */
.color-picker-container {
  display: flex;
  gap: 8px;
}

.color-picker-container input[type="color"] {
  -webkit-appearance: none;
  border: none;
  width: 42px;
  height: 35px;
  border-radius: 0px;
  cursor: pointer;
  background: none;
  flex-shrink: 0;
}

.color-picker-container input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 0;
}

.color-picker-container input[type="color"]::-webkit-color-swatch {
  border: 1px solid var(--panel-border);
}

.color-text-val {
  font-family: var(--font-mono) !important;
  font-size: 12px !important;
}

/* Range input layout */
.range-labels {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.range-labels span {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-secondary);
  background-color: var(--accent-bg-subtle);
  border: 1px solid var(--panel-border);
  padding: 1px 6px;
  font-family: var(--font-mono);
}

input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 4px;
  background: var(--panel-border);
  outline: none;
  margin: 8px 0;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--text-primary);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.25);
}

/* Checkbox and Switches styling */
.settings-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 0;
}

.settings-row label {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.checkbox-input {
  width: 16px;
  height: 16px;
  accent-color: var(--text-primary);
  cursor: pointer;
}

/* Multiple vector manager */
.vector-manager-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.vector-manager-heading .input-section-title {
  margin-bottom: 2px;
}

.vector-manager-subtitle {
  margin: 0;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.45;
}

.vector-add-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-height: 30px;
  padding: 5px 10px;
  border: 1px solid var(--text-primary);
  border-radius: 5px;
  background: var(--text-primary);
  color: var(--bg-color);
  font: 600 10px var(--font-mono);
  cursor: pointer;
  transition: transform 140ms ease, box-shadow 140ms ease;
}

.vector-add-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 5px 14px rgba(0, 0, 0, 0.14);
}

.vector-add-btn span {
  font-size: 16px;
  line-height: 1;
}

.vector-layer-toggle {
  padding: 9px 10px;
  border: 1px solid var(--panel-border);
  border-radius: 5px;
  background: color-mix(in srgb, var(--panel-bg) 78%, var(--text-primary) 4%);
}

.vector-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.vector-list-empty {
  padding: 12px;
  border: 1px dashed var(--panel-border);
  border-radius: 5px;
  color: var(--text-secondary);
  font: 10px/1.45 var(--font-mono);
  text-align: center;
}

.vector-list-item {
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr) auto;
  align-items: center;
  gap: 9px;
  width: 100%;
  padding: 8px 9px;
  border: 1px solid var(--panel-border);
  border-radius: 5px;
  background: var(--panel-bg);
  color: var(--text-primary);
  transition: border-color 140ms ease, background 140ms ease, transform 140ms ease;
}

.vector-list-item:hover {
  transform: translateX(2px);
  border-color: color-mix(in srgb, var(--text-primary) 35%, var(--panel-border));
}

.vector-list-item.active {
  border-color: var(--text-primary);
  background: color-mix(in srgb, var(--panel-bg) 86%, var(--text-primary) 7%);
  box-shadow: inset 2px 0 0 var(--text-primary);
}

.vector-list-item.is-hidden {
  opacity: 0.58;
}

.vector-swatch {
  width: 9px;
  height: 28px;
  border-radius: 999px;
  background: var(--vector-color, #3b82f6);
}

.vector-list-copy {
  min-width: 0;
}

.vector-select-btn {
  min-width: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
}

.vector-list-name,
.vector-list-meta {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.vector-list-name {
  font: 600 10px var(--font-mono);
}

.vector-list-meta {
  margin-top: 3px;
  color: var(--text-secondary);
  font: 9px var(--font-mono);
}

.vector-visibility-btn {
  display: grid;
  place-items: center;
  width: 25px;
  height: 25px;
  padding: 0;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
}

.vector-visibility-btn:hover {
  background: var(--accent-bg-subtle);
  color: var(--text-primary);
}

.vector-visibility-btn svg {
  width: 14px;
  height: 14px;
}

.vector-editor-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 10px;
  border: 1px solid var(--panel-border);
  border-radius: 5px;
  background: var(--bg-color);
}

.vector-editor-kicker,
.vector-editor-heading strong {
  display: block;
  font-family: var(--font-mono);
}

.vector-editor-kicker {
  margin-bottom: 2px;
  color: var(--text-secondary);
  font-size: 8px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.vector-editor-heading strong {
  font-size: 10px;
}

.vector-editor-actions {
  display: flex;
  gap: 5px;
}

.vector-match-btn {
  height: 28px;
  padding: 0 8px;
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  background: var(--panel-bg);
  color: var(--text-secondary);
  font: 600 9px/1 var(--font-mono);
  letter-spacing: 0.03em;
  cursor: pointer;
}

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

.vector-icon-btn {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  background: var(--panel-bg);
  color: var(--text-primary);
  cursor: pointer;
}

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

.vector-icon-btn.danger:hover {
  border-color: #dc2626;
  color: #dc2626;
}

.vector-icon-btn svg {
  width: 14px;
  height: 14px;
}

/* Saved Presets Memory slots */
.saved-presets-container {
  margin-top: 14px;
}

.custom-presets-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 8px;
}

.empty-presets-message {
  font-size: 11px;
  color: var(--text-muted);
  font-style: italic;
  text-align: center;
  padding: 16px;
  border: 1px dashed var(--panel-border);
  background-color: var(--bg-color);
  font-family: var(--font-mono);
}

.custom-preset-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  border: 1px solid var(--panel-border);
  background-color: var(--bg-color);
  border-radius: 4px;
}

.preset-item-name {
  font-size: 12px;
  color: var(--text-primary);
  font-weight: 500;
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
  max-width: 150px;
}

.preset-item-actions {
  display: flex;
  gap: 4px;
  align-items: center;
}

.load-preset-btn {
  background-color: var(--panel-bg);
  border: 1px solid var(--panel-border);
  color: var(--text-primary);
  padding: 4px 8px;
  font-size: 10px;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.load-preset-btn:hover {
  border-color: var(--text-primary);
  background-color: var(--accent-bg-subtle);
}

.delete-preset-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  padding: 4px;
  transition: color var(--transition-fast);
}

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

.delete-preset-btn svg {
  width: 13px;
  height: 13px;
}

/* Right Sidebar Footer Buttons - Fixed Spacing (No Crumpling!) */
.sidebar-footer {
  padding: 20px;
  border-top: 1px solid var(--panel-border);
  display: flex;
  flex-direction: column;
  gap: 12px;
  background-color: var(--panel-bg);
  flex-shrink: 0;
}

.btn {
  width: 100%;
  padding: 12px;
  font-size: 13px;
  font-weight: 500;
  font-family: var(--font-sans);
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--panel-border);
  background-color: var(--panel-bg);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.btn:hover {
  background-color: var(--accent-bg-subtle);
  border-color: var(--text-primary);
}

.btn-primary {
  background-color: var(--accent-color);
  color: var(--panel-bg);
  border-color: var(--accent-color);
  font-weight: 600;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--panel-bg);
}

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

/* Toast Notifications */
#app-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translate(-50%, 80px);
  background-color: var(--text-primary);
  color: var(--bg-color);
  padding: 12px 24px;
  font-size: 12px;
  font-family: var(--font-mono);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--panel-border);
  transition: transform 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.25s ease;
  opacity: 0;
  pointer-events: none;
  z-index: 1000;
}

#app-toast.toast-show {
  transform: translate(-50%, 0);
  opacity: 1;
}

/* Responsive adjustment */
@media (max-width: 900px) {
  body {
    flex-direction: column;
    overflow: auto;
  }
  .app-container {
    flex-direction: column;
    height: auto;
    overflow: visible;
  }
  .left-toolbar {
    width: 100%;
    height: auto;
    flex-direction: row;
    justify-content: center;
    border-right: none;
    border-bottom: 1px solid var(--panel-border);
    padding: 8px 16px;
    gap: 16px;
  }
  .left-toolbar .toolbar-section {
    flex-direction: row;
    width: auto;
    gap: 12px;
  }
  .left-toolbar .toolbar-divider {
    width: 1px;
    height: 24px;
    margin: 0 4px;
  }
  .right-sidebar {
    width: 100%;
    height: auto;
    border-left: none;
    border-top: 1px solid var(--panel-border);
  }
  .canvas-container {
    height: 500px;
    width: 100%;
  }
}

/* Floating HUD status bar */
.hud-status-bar {
  position: absolute;
  bottom: 20px;
  left: 20px;
  background-color: var(--panel-bg);
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow-md);
  padding: 6px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-secondary);
  z-index: 5;
  user-select: none;
  pointer-events: none; /* Let clicks pass through to viewport */
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.hud-item {
  white-space: nowrap;
}

.hud-divider {
  color: var(--panel-border);
}

/* SVG crop border visual - represents the bounding box of export */
#preview-container svg {
  border: 1px dashed rgba(0, 0, 0, 0.18);
  box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.01);
  transition: border-color var(--transition-fast);
}

[data-theme="dark"] #preview-container svg {
  border: 1px dashed rgba(255, 255, 255, 0.18);
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.01);
}

/* When hover, make crop border slightly more visible */
#preview-container:hover svg {
  border-color: var(--text-secondary);
}

/* ===========================
   MOBILE RESPONSIVE LAYOUT
   =========================== */

/* Mobile Floating Toggle Buttons */
.mobile-toggle-btn {
  display: none;
  position: absolute;
  top: 20px;
  z-index: 99;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--panel-bg);
  border: 1px solid var(--panel-border);
  color: var(--text-primary);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
}

.mobile-toggle-btn:hover {
  background-color: var(--accent-bg-subtle);
}

.mobile-toggle-btn.left-toggle { left: 16px; }
.mobile-toggle-btn.right-toggle { right: 16px; }

/* Backdrop overlay for closing open drawers */
.sidebar-overlay {
  display: none;
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.35);
  z-index: 90;
}

@media (max-width: 768px) {
  .mobile-toggle-btn {
    display: flex;
  }

  /* Narrow left toolbar slides off to the left */
  .left-toolbar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
    z-index: 200;
    box-shadow: none;
  }

  .left-toolbar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
  }

  /* Right inspector sidebar slides off to the right */
  .right-sidebar {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    z-index: 200;
    max-width: 90vw;
    overflow-y: auto;
    box-shadow: none;
  }

  .right-sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
  }

  /* Canvas takes full width */
  .canvas-container {
    flex: 1;
    width: 100vw;
  }

  .canvas-viewport {
    padding: 20px 8px;
  }

  /* Scale preview to fit narrow screens */
  #preview-container svg {
    max-width: 90vw;
    height: auto;
  }
}



/* ── Floating Navigation Pill ── */
.nav-pill {
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 6px;
  background-color: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 30px;
  padding: 5px 8px 5px 12px;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal, 0.22s);
  opacity: 0.75;
  pointer-events: auto;
  backdrop-filter: blur(8px);
}

.nav-pill:hover {
  opacity: 1;
  box-shadow: var(--shadow-lg);
}

.nav-pill-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  user-select: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-pill-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  border-radius: 20px;
  border: none;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all 0.12s ease;
  white-space: nowrap;
}

.nav-pill-btn svg {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
}

.nav-pill-btn.back-hub {
  background-color: var(--accent-bg-subtle);
  color: var(--text-primary);
}

.nav-pill-btn.back-hub:hover {
  background-color: var(--text-primary);
  color: var(--panel-bg);
}

.nav-pill-btn.open-standalone {
  background-color: var(--accent-color);
  color: var(--panel-bg);
}

.nav-pill-btn.open-standalone:hover {
  background-color: var(--accent-hover);
}

/* ── Mobile Toggle Buttons ── */
.mobile-toggle-btn {
  display: none;
  position: absolute;
  top: 16px;
  z-index: 99;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--panel-bg);
  border: 1px solid var(--panel-border);
  color: var(--text-primary);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-toggle-btn:hover {
  background-color: var(--accent-bg-subtle);
}

.mobile-toggle-btn.left-toggle {
  left: 16px;
}

.mobile-toggle-btn.right-toggle {
  right: 16px;
}

.sidebar-overlay {
  display: none;
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(0, 0, 0, 0.3);
  z-index: 90;
}

/* ── Responsive breakpoints ── */
@media (max-width: 768px) {
  .mobile-toggle-btn {
    display: flex;
  }

  .left-toolbar {
    position: absolute;
    top: 0; left: 0; bottom: 0;
    transform: translateX(-100%);
    transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 100;
    box-shadow: none;
  }

  .left-toolbar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
  }

  .right-sidebar {
    position: absolute;
    top: 0; right: 0; bottom: 0;
    transform: translateX(100%);
    transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 100;
    box-shadow: none;
  }

  .right-sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
  }

  .nav-pill {
    top: 10px;
    left: auto;
    right: 10px;
    transform: none;
    padding: 4px 6px 4px 8px;
  }

  .nav-pill-label {
    display: none;
  }

  .nav-pill-btn {
    font-size: 10px;
    padding: 4px 8px;
  }
}