/* ==========================================================================
   IdeaCanvas - Design System & Custom Stylesheet
   ========================================================================== */

/* Font & Base Variables */
:root {
  /* Common variables */
  --font-title: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  
  /* Color Palette Themes - Default Dark Mode */
  --bg-primary: #0b0f19;
  --bg-secondary: rgba(15, 22, 42, 0.7);
  --bg-grid: rgba(255, 255, 255, 0.04);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --border-color: rgba(255, 255, 255, 0.08);
  
  --accent-color: #7c3aed;
  --accent-hover: #8b5cf6;
  --accent-light: rgba(124, 58, 237, 0.15);
  
  --danger-color: #ef4444;
  --danger-hover: #f87171;
  --danger-light: rgba(239, 68, 68, 0.15);
  
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
  --note-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
  --note-shadow-dragging: 0 20px 35px rgba(0, 0, 0, 0.25);
  --glass-blur: blur(16px);
  --glass-border: 1px solid rgba(255, 255, 255, 0.08);

  /* Note Color Options (Dark Theme) */
  --n-yellow-bg: rgba(253, 224, 71, 0.12);
  --n-yellow-border: rgba(253, 224, 71, 0.4);
  --n-yellow-accent: #fde047;
  --n-yellow-text: #fef08a;

  --n-green-bg: rgba(74, 222, 128, 0.12);
  --n-green-border: rgba(74, 222, 128, 0.4);
  --n-green-accent: #4ade80;
  --n-green-text: #86efac;

  --n-blue-bg: rgba(96, 165, 250, 0.12);
  --n-blue-border: rgba(96, 165, 250, 0.4);
  --n-blue-accent: #60a5fa;
  --n-blue-text: #93c5fd;

  --n-pink-bg: rgba(244, 114, 182, 0.12);
  --n-pink-border: rgba(244, 114, 182, 0.4);
  --n-pink-accent: #f472b6;
  --n-pink-text: #fbcfe8;

  --n-purple-bg: rgba(192, 132, 252, 0.12);
  --n-purple-border: rgba(192, 132, 252, 0.4);
  --n-purple-accent: #c084fc;
  --n-purple-text: #e9d5ff;

  --n-orange-bg: rgba(251, 146, 60, 0.12);
  --n-orange-border: rgba(251, 146, 60, 0.4);
  --n-orange-accent: #fb923c;
  --n-orange-text: #fed7aa;
}

/* Light Theme Variables */
body.theme-light {
  --bg-primary: #f8fafc;
  --bg-secondary: rgba(255, 255, 255, 0.7);
  --bg-grid: rgba(15, 23, 42, 0.05);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --border-color: rgba(15, 23, 42, 0.08);
  
  --accent-color: #6d28d9;
  --accent-hover: #7c3aed;
  --accent-light: rgba(109, 40, 217, 0.1);
  
  --danger-color: #dc2626;
  --danger-hover: #ef4444;
  --danger-light: rgba(220, 38, 38, 0.1);
  
  --glass-shadow: 0 8px 32px 0 rgba(15, 23, 42, 0.08);
  --note-shadow: 0 10px 20px rgba(15, 23, 42, 0.06);
  --note-shadow-dragging: 0 20px 35px rgba(15, 23, 42, 0.12);
  --glass-border: 1px solid rgba(15, 23, 42, 0.08);

  /* Note Color Options (Light Theme - Rich Pastels) */
  --n-yellow-bg: #fefef0;
  --n-yellow-border: #fde047;
  --n-yellow-accent: #eab308;
  --n-yellow-text: #854d0e;

  --n-green-bg: #f0fdf4;
  --n-green-border: #86efac;
  --n-green-accent: #22c55e;
  --n-green-text: #166534;

  --n-blue-bg: #f0f9ff;
  --n-blue-border: #93c5fd;
  --n-blue-accent: #3b82f6;
  --n-blue-text: #1e40af;

  --n-pink-bg: #fdf2f8;
  --n-pink-border: #fbcfe8;
  --n-pink-accent: #ec4899;
  --n-pink-text: #9d174d;

  --n-purple-bg: #faf5ff;
  --n-purple-border: #e9d5ff;
  --n-purple-accent: #a855f7;
  --n-purple-text: #6b21a8;

  --n-orange-bg: #fff7ed;
  --n-orange-border: #fed7aa;
  --n-orange-accent: #f97316;
  --n-orange-text: #9a3412;
}

/* ==========================================================================
   Basic Layout & General Reset
   ========================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow: hidden;
  width: 100vw;
  height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  user-select: none;
  transition: background-color var(--transition-normal);
}

#app {
  width: 100%;
  height: 100%;
  position: relative;
}

/* Scrollbar styling for custom panels */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* ==========================================================================
   Infinite Canvas System
   ========================================================================== */
.canvas-container {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  overflow: hidden;
  cursor: default;
  background-image: radial-gradient(var(--bg-grid) 1.5px, transparent 1.5px);
  background-size: 32px 32px;
  background-position: 0px 0px;
}

.canvas-container:active {
  cursor: grabbing;
}

/* The actual board that gets translated and scaled */
.canvas-board {
  position: absolute;
  width: 0;
  height: 0;
  transform-origin: 0 0;
  will-change: transform;
}

/* Obsolete layer: completely hidden as grid is now hardware-accelerated on the container */
.canvas-grid {
  display: none !important;
}

/* ==========================================================================
   Floating Toolbars (Header & Controls)
   ========================================================================== */

/* Glassmorphism utility */
.glass-panel {
  background-color: var(--bg-secondary);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-lg);
  z-index: 10;
}

/* Header toolbar */
.floating-header {
  position: absolute;
  top: 20px;
  left: 20px;
  right: 20px;
  height: 64px;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  
  /* Inherit Glassmorphism */
  background-color: var(--bg-secondary);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-lg);
  z-index: 10;
  transition: background-color var(--transition-normal), border var(--transition-normal);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  color: var(--accent-color);
  width: 28px;
  height: 28px;
}

.logo-text {
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.5px;
}

.logo-text .highlight {
  color: var(--accent-color);
}

/* Search Box style */
.search-box {
  position: relative;
  width: 320px;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 14px;
  color: var(--text-secondary);
  width: 18px;
  height: 18px;
  pointer-events: none;
}

.search-box input {
  width: 100%;
  height: 40px;
  padding: 0 38px 0 42px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background-color: rgba(0, 0, 0, 0.1);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 14px;
  outline: none;
  transition: all var(--transition-normal);
}

body.theme-light .search-box input {
  background-color: rgba(255, 255, 255, 0.5);
}

.search-box input:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px var(--accent-light);
  background-color: rgba(0, 0, 0, 0.15);
}

body.theme-light .search-box input:focus {
  background-color: #ffffff;
}

.search-clear-btn {
  position: absolute;
  right: 8px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.search-clear-btn:hover {
  color: var(--text-primary);
  background-color: var(--border-color);
}

/* Search Dropdown */
.search-dropdown {
  position: absolute;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.2);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  z-index: 10000;
  max-height: 300px;
  overflow-y: auto;
  opacity: 1;
  transform: translateY(0);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.search-dropdown.search-hidden {
  opacity: 0;
  transform: translateY(-10px);
  pointer-events: none;
}

.search-results-list {
  list-style: none;
  margin: 0;
  padding: 8px 0;
}

.search-result-item {
  padding: 10px 16px;
  cursor: pointer;
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition-fast);
}

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

.search-result-item:hover {
  background-color: rgba(255, 255, 255, 0.05);
}

body.theme-light .search-result-item:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

.search-result-content {
  font-size: 13px;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.4;
}

.search-result-date {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.search-clear-btn.hidden {
  display: none;
}

/* Header Action Controls */
.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.actions-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.divider {
  width: 1px;
  height: 24px;
  background-color: var(--border-color);
}

/* General Button Styles */
.icon-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background-color: transparent;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  outline: none;
  transition: all var(--transition-fast);
}

.icon-btn i {
  width: 18px;
  height: 18px;
}

.icon-btn:hover:not(:disabled) {
  background-color: var(--border-color);
  border-color: var(--text-secondary);
}

.icon-btn:active:not(:disabled) {
  transform: scale(0.95);
}

.icon-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* Theme Icons switcher */
.theme-toggle .sun-icon {
  display: none;
}

.theme-toggle .moon-icon {
  display: block;
}

body.theme-light #theme-toggle .sun-icon {
  display: block;
}

body.theme-light #theme-toggle .moon-icon {
  display: none;
}

/* Bottom Controls */
.floating-controls {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  height: 52px;
  padding: 0 16px;
  display: flex;
  align-items: center;
  gap: 16px;

  /* Glassmorphism */
  background-color: var(--bg-secondary);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-lg);
  z-index: 10;
  transition: background-color var(--transition-normal), border var(--transition-normal);
}

.zoom-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.zoom-level {
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 600;
  min-width: 48px;
  text-align: center;
  color: var(--text-primary);
}

.file-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Label Buttons with icons & text */
.icon-btn-text {
  height: 36px;
  padding: 0 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background-color: transparent;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  outline: none;
  transition: all var(--transition-fast);
}

.icon-btn-text i {
  width: 15px;
  height: 15px;
}

.icon-btn-text:hover {
  background-color: var(--border-color);
  border-color: var(--text-secondary);
}

.icon-btn-text.danger {
  color: var(--danger-hover);
}

.icon-btn-text.danger:hover {
  background-color: var(--danger-light);
  border-color: var(--danger-hover);
}

.hidden {
  display: none !important;
}

/* ==========================================================================
   Sticky Note Component
   ========================================================================== */
.note {
  position: absolute;
  top: 0;
  left: 0;
  transform: translate3d(var(--x, 0px), var(--y, 0px), 0);
  width: 250px;
  height: 250px;
  min-width: 180px;
  min-height: 180px;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  box-shadow: var(--note-shadow);
  transform-origin: center center;
  transition: box-shadow var(--transition-fast), opacity var(--transition-normal), transform var(--transition-fast);
}

/* Dragging state */
.note.dragging {
  cursor: grabbing;
  box-shadow: var(--note-shadow-dragging);
  z-index: 1000 !important;
  transition: none !important;
  will-change: transform;
  /* Visual tilt animation executed in JS or CSS */
  transform: translate3d(var(--x, 0px), var(--y, 0px), 0) scale(1.025) rotate(1.5deg);
}

/* Header style for notes */
.note-header {
  padding: 8px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top-left-radius: var(--radius-md);
  border-top-right-radius: var(--radius-md);
  cursor: grab;
  border-bottom: 1px solid transparent;
  transition: border-bottom var(--transition-fast);
}

.note:hover .note-header {
  border-bottom: 1px solid var(--note-border-color);
}

.note.dragging .note-header {
  cursor: grabbing;
}

/* Inner header content styling */
.note-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.note:hover .note-actions,
.note.dragging .note-actions {
  opacity: 1;
}

/* Note action circle buttons */
.note-btn {
  background: transparent;
  border: none;
  width: 22px;
  height: 22px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--note-text-color);
  opacity: 0.6;
  transition: opacity var(--transition-fast), background-color var(--transition-fast);
}

.note-btn:hover {
  opacity: 1;
  background-color: rgba(0, 0, 0, 0.08);
}

body.theme-dark .note-btn:hover {
  background-color: rgba(255, 255, 255, 0.12);
}

.note-btn.delete-btn:hover {
  color: var(--danger-color);
  background-color: var(--danger-light);
}

.note-btn i {
  width: 14px;
  height: 14px;
}

/* Note Color Swatch Selector */
.color-picker-trigger {
  position: relative;
}

.color-palette {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--bg-secondary);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: var(--radius-md);
  padding: 6px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  box-shadow: var(--glass-shadow);
  z-index: 1001;
  opacity: 0;
  transform: translateY(-8px) scale(0.95);
  pointer-events: none;
  transition: all var(--transition-fast);
}

.color-picker-trigger:hover .color-palette,
.color-palette.active {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: all;
}

.color-option {
  width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

body.theme-light .color-option {
  border: 1.5px solid rgba(0, 0, 0, 0.1);
}

.color-option:hover {
  transform: scale(1.2);
}

.color-option.active {
  box-shadow: 0 0 0 2px var(--note-accent-color);
}

/* Color Options Colors */
.color-option.yellow { background-color: #fde047; }
.color-option.green  { background-color: #4ade80; }
.color-option.blue   { background-color: #60a5fa; }
.color-option.pink   { background-color: #f472b6; }
.color-option.purple { background-color: #c084fc; }
.color-option.orange { background-color: #fb923c; }

/* Drag handle indicator */
.note-drag-handle {
  display: flex;
  gap: 2px;
  align-items: center;
  color: var(--note-text-color);
  opacity: 0.4;
  margin-right: auto;
}

.drag-dot {
  width: 4px;
  height: 4px;
  border-radius: var(--radius-full);
  background-color: currentColor;
}

/* Note content area */
.note-body {
  flex: 1;
  padding: 12px 14px 14px;
  display: flex;
  flex-direction: column;
}

/* Textarea styling */
.note-textarea {
  flex: 1;
  width: 100%;
  border: none;
  background: transparent;
  resize: none;
  outline: none;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.5;
  color: var(--note-text-color);
  padding: 0;
  transition: font-size var(--transition-fast);
  cursor: text;
}

/* Bottom elements of notes (Timestamp) */
.note-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 10px;
  color: var(--note-text-color);
  opacity: 0.5;
  pointer-events: none;
}

/* Resizing handle */
.note-resizer {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 16px;
  height: 16px;
  cursor: se-resize;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  padding: 3px;
  border-bottom-right-radius: var(--radius-md);
  color: var(--note-text-color);
  opacity: 0.3;
  transition: opacity var(--transition-fast);
}

.note:hover .note-resizer {
  opacity: 0.6;
}

.note-resizer::after {
  content: "";
  width: 8px;
  height: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
}

/* ==========================================================================
   Note Theme Custom Classes (Applied by JS)
   ========================================================================== */

/* YELLOW Note */
.note.color-yellow {
  background-color: var(--n-yellow-bg);
  border: 1.5px solid var(--n-yellow-border);
  --note-accent-color: var(--n-yellow-accent);
  --note-text-color: var(--n-yellow-text);
  --note-border-color: var(--n-yellow-border);
}
.note.color-yellow .note-header { background-color: rgba(253, 224, 71, 0.05); }

/* GREEN Note */
.note.color-green {
  background-color: var(--n-green-bg);
  border: 1.5px solid var(--n-green-border);
  --note-accent-color: var(--n-green-accent);
  --note-text-color: var(--n-green-text);
  --note-border-color: var(--n-green-border);
}
.note.color-green .note-header { background-color: rgba(74, 222, 128, 0.05); }

/* BLUE Note */
.note.color-blue {
  background-color: var(--n-blue-bg);
  border: 1.5px solid var(--n-blue-border);
  --note-accent-color: var(--n-blue-accent);
  --note-text-color: var(--n-blue-text);
  --note-border-color: var(--n-blue-border);
}
.note.color-blue .note-header { background-color: rgba(96, 165, 250, 0.05); }

/* PINK Note */
.note.color-pink {
  background-color: var(--n-pink-bg);
  border: 1.5px solid var(--n-pink-border);
  --note-accent-color: var(--n-pink-accent);
  --note-text-color: var(--n-pink-text);
  --note-border-color: var(--n-pink-border);
}
.note.color-pink .note-header { background-color: rgba(244, 114, 182, 0.05); }

/* PURPLE Note */
.note.color-purple {
  background-color: var(--n-purple-bg);
  border: 1.5px solid var(--n-purple-border);
  --note-accent-color: var(--n-purple-accent);
  --note-text-color: var(--n-purple-text);
  --note-border-color: var(--n-purple-border);
}
.note.color-purple .note-header { background-color: rgba(192, 132, 252, 0.05); }

/* ORANGE Note */
.note.color-orange {
  background-color: var(--n-orange-bg);
  border: 1.5px solid var(--n-orange-border);
  --note-accent-color: var(--n-orange-accent);
  --note-text-color: var(--n-orange-text);
  --note-border-color: var(--n-orange-border);
}
.note.color-orange .note-header { background-color: rgba(251, 146, 60, 0.05); }

/* ==========================================================================
   Search Highlighting / Dimming Effects
   ========================================================================== */
.note.search-dimmed {
  opacity: 0.15;
  transform: translate3d(var(--x, 0px), var(--y, 0px), 0) scale(0.94);
  pointer-events: none;
}

.note.search-highlighted {
  opacity: 1;
  filter: none;
  transform: translate3d(var(--x, 0px), var(--y, 0px), 0) scale(1.04);
  box-shadow: 0 0 0 3px var(--accent-color), var(--note-shadow-dragging);
  z-index: 900 !important;
}

/* ==========================================================================
   Modals & Help Overlay
   ========================================================================== */
.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 1;
  transition: opacity var(--transition-normal);
}

.modal-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.modal-content {
  width: 520px;
  max-width: 90%;
  max-height: 85vh;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.3);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  transform: translateY(0) scale(1);
  transition: transform var(--transition-normal);
  overflow: hidden;
}

.modal-overlay.hidden .modal-content {
  transform: translateY(20px) scale(0.96);
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h2 {
  font-family: var(--font-title);
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
}

.modal-header h2 i {
  color: var(--accent-color);
  width: 22px;
  height: 22px;
}

.close-modal-btn {
  border-radius: var(--radius-sm);
  width: 32px;
  height: 32px;
}

.modal-body {
  padding: 20px 24px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.shortcut-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.shortcut-section h3 {
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-hover);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 6px;
}

.shortcut-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}

.shortcut-key {
  font-family: var(--font-body);
  font-weight: 600;
  background-color: var(--border-color);
  color: var(--text-primary);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

body.theme-light .shortcut-key {
  border: 1px solid rgba(0, 0, 0, 0.05);
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.shortcut-desc {
  color: var(--text-secondary);
  text-align: right;
  max-width: 65%;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  background-color: rgba(0, 0, 0, 0.05);
}

.btn {
  height: 38px;
  padding: 0 20px;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  outline: none;
  transition: all var(--transition-fast);
}

.btn-primary {
  background-color: var(--accent-color);
  color: #ffffff;
}

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

.btn-primary:active {
  transform: scale(0.97);
}

.history-item {
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.history-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.history-date {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 16px;
  color: var(--accent-color);
  margin-bottom: 8px;
}

.history-list {
  margin: 0;
  padding-left: 20px;
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.6;
}

.history-list li {
  margin-bottom: 6px;
}

/* ==========================================================================
   Toast Notifications
   ========================================================================== */
.toast-container {
  position: absolute;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 200;
}

.toast {
  padding: 12px 18px;
  border-radius: var(--radius-md);
  background-color: var(--bg-secondary);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  transform: translateX(120%);
  animation: slide-in 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards,
             fade-out 0.25s ease 2.7s forwards;
}

.toast i {
  width: 16px;
  height: 16px;
}

.toast.success i {
  color: #10b981;
}

.toast.info i {
  color: var(--accent-color);
}

.toast.warning i {
  color: var(--n-orange-accent);
}

/* ==========================================================================
   Guide Overlay & Micro-animations
   ========================================================================== */
.canvas-guide {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  pointer-events: none;
  z-index: 1;
  transition: opacity var(--transition-slow);
}

.canvas-guide.fade-out {
  opacity: 0;
}

.guide-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.guide-icon {
  width: 42px;
  height: 42px;
  color: var(--accent-color);
  opacity: 0.5;
}

.guide-title {
  font-family: var(--font-title);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  opacity: 0.7;
}

.guide-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  opacity: 0.6;
}

/* Animations */
@keyframes slide-in {
  to {
    transform: translateX(0);
  }
}

@keyframes fade-out {
  to {
    opacity: 0;
    transform: translateY(-10px);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.4;
  }
  50% {
    transform: scale(1.08);
    opacity: 0.8;
  }
}

.pulse {
  animation: pulse 2.5s infinite ease-in-out;
}

/* Animations for note events */
@keyframes note-pop {
  0% {
    scale: 0.6;
    opacity: 0;
  }
  70% {
    scale: 1.03;
    opacity: 0.85;
  }
  100% {
    scale: 1;
    opacity: 1;
  }
}

.note-pop-in {
  animation: note-pop 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes note-fade-out {
  0% {
    scale: 1;
    opacity: 1;
  }
  100% {
    scale: 0.6;
    opacity: 0;
  }
}

.note-fade-out-anim {
  animation: note-fade-out 0.25s cubic-bezier(0.36, 0.07, 0.19, 0.97) forwards;
}

/* ==========================================================================
   Minimap UI
   ========================================================================== */
.minimap-container {
  position: absolute;
  bottom: 84px;
  right: 24px;
  width: 200px;
  height: 150px;
  background-color: var(--bg-secondary);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-md);
  z-index: 50;
  opacity: 1;
  pointer-events: none;
  transition: opacity var(--transition-normal), transform var(--transition-normal);
  overflow: hidden;
}

.minimap-container.hidden {
  opacity: 0;
  transform: translateY(10px) scale(0.95);
}

#minimap-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* ==========================================================================
   Multi-Selection UI
   ========================================================================== */
.selection-box {
  position: absolute;
  border: 1px solid var(--accent-color);
  background-color: var(--accent-light);
  pointer-events: none;
  z-index: 1000;
}

.selection-box.hidden {
  display: none !important;
}

.note.selected {
  box-shadow: 0 0 0 3px var(--accent-color), var(--note-shadow);
}
.note.selected.dragging {
  box-shadow: 0 0 0 3px var(--accent-color), var(--note-shadow-dragging);
}

/* ==========================================================================
   Performance Optimizations
   ========================================================================== */
body.is-panning .note {
  box-shadow: none !important;
  will-change: transform;
}
body.is-panning .selection-box,
body.is-panning .context-menu {
  display: none !important;
}

/* ==========================================================================
   Context Menu
   ========================================================================== */
.context-menu {
  position: absolute;
  background-color: var(--bg-secondary);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-md);
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  z-index: 2000;
  min-width: 160px;
  opacity: 1;
  transform: scale(1);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.context-menu.hidden {
  opacity: 0;
  transform: scale(0.95);
  pointer-events: none;
}

.context-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 12px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.context-menu-item i {
  width: 16px;
  height: 16px;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.context-menu-item:hover {
  background-color: var(--border-color);
}

.context-menu-item:hover i {
  color: var(--text-primary);
}

.context-menu-item.danger {
  color: var(--danger-color);
}
.context-menu-item.danger i {
  color: var(--danger-color);
}
.context-menu-item.danger:hover {
  background-color: var(--danger-light);
}

/* Context Menu Submenu Styles */
.context-menu-separator {
  height: 1px;
  background-color: var(--border-color);
  margin: 4px 0;
}

.context-menu-submenu-wrapper {
  position: relative;
  width: 100%;
}

.submenu-arrow {
  margin-left: auto;
}

.context-submenu {
  position: absolute;
  top: 0;
  left: 100%;
  margin-left: 6px;
  background-color: var(--bg-secondary);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-md);
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 140px;
  opacity: 0;
  transform: translateX(-10px);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  pointer-events: none;
}

/* Invisible bridge to prevent hover loss when moving cursor to submenu */
.context-submenu::before {
  content: '';
  position: absolute;
  top: -10px;
  bottom: -10px;
  left: -15px;
  width: 15px;
}

.context-menu-submenu-wrapper:hover .context-submenu {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}

/* Export utility class to hide non-selected items during capture */
.export-hidden {
  display: none !important;
}

/* ==========================================================================
   Groups & Connections Layer
   ========================================================================== */
.connections-layer, .groups-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px; /* The container doesn't matter, we just use absolute pos from 0,0 */
  pointer-events: none;
  overflow: visible;
}
.connections-layer { z-index: 1; }
.groups-layer { z-index: 0; }

.group-box {
  position: absolute;
  border: 2px dashed var(--accent-color);
  background-color: rgba(167, 139, 250, 0.05);
  border-radius: var(--radius-lg);
  pointer-events: none;
  transition: all var(--transition-fast);
}

body.theme-light .group-box {
  background-color: rgba(124, 58, 237, 0.05);
}

/* ==========================================================================
   Connection Ports & SVG Paths
   ========================================================================== */
.connection-port {
  position: absolute;
  width: 14px;
  height: 14px;
  background-color: var(--accent-color);
  border: 2px solid var(--bg-primary);
  border-radius: 50%;
  opacity: 0;
  cursor: crosshair;
  z-index: 100;
  transition: opacity 0.2s, transform 0.2s;
  pointer-events: auto;
}

.note:hover .connection-port,
.note.show-ports .connection-port,
.connection-port.active {
  opacity: 1;
}

.connection-port:hover {
  transform: scale(1.5);
  background-color: var(--text-primary);
}

.connection-port.top { top: -7px; left: calc(50% - 7px); }
.connection-port.bottom { bottom: -7px; left: calc(50% - 7px); }
.connection-port.left { left: -7px; top: calc(50% - 7px); }
.connection-port.right { right: -7px; top: calc(50% - 7px); }

.connection-path {
  fill: none;
  stroke: var(--text-secondary);
  stroke-width: 4px;
  stroke-linecap: round;
  pointer-events: auto;
  transition: stroke-width 0.2s, stroke 0.2s;
}

.connection-path:hover {
  stroke: var(--danger-color); /* Hover to delete hint */
  stroke-width: 6px;
  cursor: pointer;
}

.connection-path.temp {
  stroke: var(--accent-color);
  stroke-dasharray: 8 8;
  animation: dashLine 1s linear infinite;
  pointer-events: none;
}

@keyframes dashLine {
  to { stroke-dashoffset: -16; }
}

/* ==========================================================================
   Mindmap Nodes
   ========================================================================== */
.note.mindmap-node {
  width: max-content !important;
  min-width: 160px !important;
  max-width: 400px !important;
  height: max-content !important;
  min-height: 48px !important;
  border-radius: 24px;
  border: 2px solid var(--border-color);
  box-shadow: var(--note-shadow);
  display: flex;
  flex-direction: row;
  align-items: stretch;
  justify-content: center;
  padding: 0;
  transition: all var(--transition-fast);
}

.note.mindmap-node.selected {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px var(--accent-color), 0 0 15px rgba(167, 139, 250, 0.4);
}

body.is-panning .note.mindmap-node {
  box-shadow: none !important;
}

/* Hide unneeded sticky note elements */
.note.mindmap-node .note-header,
.note.mindmap-node .note-resizer,
.note.mindmap-node .note-footer,
.note.mindmap-node .connection-port {
  display: none !important;
}

.note.mindmap-node .note-body {
  padding: 12px 24px;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.note.mindmap-node .note-textarea {
  text-align: center;
  height: auto;
  min-height: 24px;
  overflow: hidden;
  resize: none;
  display: flex;
  align-items: center;
  line-height: 1.4;
  field-sizing: content;
}

.note.drop-target {
  box-shadow: 0 0 0 4px rgba(255, 71, 87, 0.5) !important;
  border-color: #ff4757 !important;
}