/* ==========================================================================
   MINIMAL WHITEBOARD — Modern Design System & Styles
   ========================================================================== */

:root {
  /* Dark Theme Palette (Default) */
  --bg-color: #0b0f17;
  --bg-surface: rgba(18, 24, 38, 0.75);
  --bg-surface-hover: rgba(30, 41, 59, 0.85);
  --bg-card: #151d2c;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(56, 189, 248, 0.5);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-primary: #38bdf8;
  --accent-primary-hover: #0284c7;
  --accent-glow: rgba(56, 189, 248, 0.25);
  --danger: #f43f5e;
  --danger-hover: #e11d48;
  --grid-dot-color: rgba(255, 255, 255, 0.12);
  
  /* Shadows & Glassmorphism */
  --glass-blur: blur(20px);
  --glass-bg: rgba(15, 23, 42, 0.72);
  --glass-border: 1px solid rgba(255, 255, 255, 0.08);
  --shadow-dock: 0 20px 40px -15px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.08);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  
  /* Layout Dimensions */
  --toolbar-height: 56px;
  --border-radius-pill: 9999px;
  --border-radius-lg: 16px;
  --border-radius-md: 10px;
  --transition-fast: 150ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 250ms cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="light"] {
  --bg-color: #f8fafc;
  --bg-surface: rgba(255, 255, 255, 0.82);
  --bg-surface-hover: rgba(241, 245, 249, 0.95);
  --bg-card: #ffffff;
  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-focus: rgba(2, 132, 199, 0.4);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --accent-primary: #0284c7;
  --accent-primary-hover: #0369a1;
  --accent-glow: rgba(2, 132, 199, 0.18);
  --danger: #e11d48;
  --danger-hover: #be123c;
  --grid-dot-color: rgba(0, 0, 0, 0.12);
  --glass-bg: rgba(255, 255, 255, 0.82);
  --glass-border: 1px solid rgba(0, 0, 0, 0.07);
  --shadow-dock: 0 16px 36px -10px rgba(0, 0, 0, 0.12), 0 0 0 1px rgba(0, 0, 0, 0.05);
}

/* ==========================================================================
   Base Reset
   ========================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-user-select: none;
}

html, body {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  position: fixed;
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  touch-action: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
   Multi-Layer Canvas Container
   ========================================================================== */

#canvas-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  cursor: crosshair;
}

/* Tool-Specific Hardware Cursors */
#canvas-container[data-tool="pen"],
#canvas-container[data-tool="pen"] canvas {
  cursor: url("data:image/svg+xml,%3Csvg%20xmlns%3D%27http%3A//www.w3.org/2000/svg%27%20width%3D%2732%27%20height%3D%2732%27%20viewBox%3D%270%200%2032%2032%27%20fill%3D%27none%27%3E%3Cpath%20d%3D%27M2%202%20L9%204%20L14%209%20L25%2020%20L20%2025%20L9%2014%20L4%209%20Z%27%20fill%3D%27rgba%280%2C0%2C0%2C0.35%29%27%20transform%3D%27translate%281%2C%201.5%29%27/%3E%3Cpath%20d%3D%27M12%2011%20L23%2022%20L20%2025%20L9%2014%20Z%27%20fill%3D%27%231e293b%27%20stroke%3D%27%23ffffff%27%20stroke-width%3D%271.2%27%20stroke-linejoin%3D%27round%27/%3E%3Cpath%20d%3D%27M2%202%20L9%204%20L12%2011%20L11%2012%20L4%209%20Z%27%20fill%3D%27%23f1f5f9%27%20stroke%3D%27%230f172a%27%20stroke-width%3D%271.2%27%20stroke-linejoin%3D%27round%27/%3E%3Cline%20x1%3D%272%27%20y1%3D%272%27%20x2%3D%278%27%20y2%3D%278%27%20stroke%3D%27%230f172a%27%20stroke-width%3D%271.2%27%20stroke-linecap%3D%27round%27/%3E%3Ccircle%20cx%3D%278%27%20cy%3D%278%27%20r%3D%271.2%27%20fill%3D%27%230f172a%27/%3E%3Cpath%20d%3D%27M13%2010%20L10%2013%27%20stroke%3D%27%2338bdf8%27%20stroke-width%3D%271.5%27%20stroke-linecap%3D%27round%27/%3E%3C/svg%3E") 2 2, crosshair;
}

#canvas-container[data-tool="brush"],
#canvas-container[data-tool="brush"] canvas {
  cursor: url("data:image/svg+xml,%3Csvg%20xmlns%3D%27http%3A//www.w3.org/2000/svg%27%20width%3D%2732%27%20height%3D%2732%27%20viewBox%3D%270%200%2032%2032%27%20fill%3D%27none%27%3E%3Cpath%20d%3D%27M2%202%20L8%204%20L12%209%20L24%2021%20L21%2024%20L9%2012%20L4%208%20Z%27%20fill%3D%27rgba%280%2C0%2C0%2C0.35%29%27%20transform%3D%27translate%281%2C%201.5%29%27/%3E%3Cpath%20d%3D%27M13%2011%20L25%2023%20L22%2026%20L10%2014%20Z%27%20fill%3D%27%237c2d12%27%20stroke%3D%27%23ffffff%27%20stroke-width%3D%271.2%27%20stroke-linejoin%3D%27round%27/%3E%3Cpath%20d%3D%27M10%208%20L14%2012%20L12%2014%20L8%2010%20Z%27%20fill%3D%27%2394a3b8%27%20stroke%3D%27%230f172a%27%20stroke-width%3D%271.2%27%20stroke-linejoin%3D%27round%27/%3E%3Cpath%20d%3D%27M2%202%20C4%204%206%205%208%207%20L7%208%20C5%206%204%204%202%202%20Z%27%20fill%3D%27%23818cf8%27%20stroke%3D%27%230f172a%27%20stroke-width%3D%271%27/%3E%3Cpath%20d%3D%27M2%202%20L8%207%20L7%208%20L2%202%20Z%27%20fill%3D%27%236366f1%27/%3E%3C/svg%3E") 2 2, crosshair;
}

#canvas-container[data-tool="eraser"],
#canvas-container[data-tool="eraser"] canvas {
  cursor: url("data:image/svg+xml,%3Csvg%20xmlns%3D%27http%3A//www.w3.org/2000/svg%27%20width%3D%2732%27%20height%3D%2732%27%20viewBox%3D%270%200%2032%2032%27%20fill%3D%27none%27%3E%3Cpath%20d%3D%27M4%2022%20L12%2014%20L20%206%20L26%2012%20L18%2020%20L10%2028%20Z%27%20fill%3D%27rgba%280%2C0%2C0%2C0.35%29%27%20transform%3D%27translate%281%2C%201.5%29%27/%3E%3Cpath%20d%3D%27M12%2014%20L20%206%20L26%2012%20L18%2020%20Z%27%20fill%3D%27%23f8fafc%27%20stroke%3D%27%230f172a%27%20stroke-width%3D%271.5%27%20stroke-linejoin%3D%27round%27/%3E%3Cpath%20d%3D%27M4%2022%20L12%2014%20L18%2020%20L10%2028%20Z%27%20fill%3D%27%23fb7185%27%20stroke%3D%27%230f172a%27%20stroke-width%3D%271.5%27%20stroke-linejoin%3D%27round%27/%3E%3Cline%20x1%3D%2712%27%20y1%3D%2714%27%20x2%3D%2718%27%20y2%3D%2720%27%20stroke%3D%27%230f172a%27%20stroke-width%3D%271.5%27/%3E%3C/svg%3E") 4 22, crosshair;
}

#canvas-container[data-tool="laser"],
#canvas-container[data-tool="laser"] canvas {
  cursor: url("data:image/svg+xml,%3Csvg%20xmlns%3D%27http%3A//www.w3.org/2000/svg%27%20width%3D%2732%27%20height%3D%2732%27%20viewBox%3D%270%200%2032%2032%27%20fill%3D%27none%27%3E%3Ccircle%20cx%3D%2716%27%20cy%3D%2716%27%20r%3D%2710%27%20stroke%3D%27%23f43f5e%27%20stroke-width%3D%271.2%27%20stroke-dasharray%3D%272%202%27%20opacity%3D%270.7%27/%3E%3Ccircle%20cx%3D%2716%27%20cy%3D%2716%27%20r%3D%276%27%20fill%3D%27%23f43f5e%27%20fill-opacity%3D%270.25%27/%3E%3Ccircle%20cx%3D%2716%27%20cy%3D%2716%27%20r%3D%273.5%27%20fill%3D%27%23f43f5e%27%20stroke%3D%27%23ffffff%27%20stroke-width%3D%271%27/%3E%3Ccircle%20cx%3D%2716%27%20cy%3D%2716%27%20r%3D%271.2%27%20fill%3D%27%23ffffff%27/%3E%3Cline%20x1%3D%2716%27%20y1%3D%273%27%20x2%3D%2716%27%20y2%3D%276%27%20stroke%3D%27%23f43f5e%27%20stroke-width%3D%271.5%27%20stroke-linecap%3D%27round%27/%3E%3Cline%20x1%3D%2716%27%20y1%3D%2726%27%20x2%3D%2716%27%20y2%3D%2729%27%20stroke%3D%27%23f43f5e%27%20stroke-width%3D%271.5%27%20stroke-linecap%3D%27round%27/%3E%3Cline%20x1%3D%273%27%20y1%3D%2716%27%20x2%3D%276%27%20y2%3D%2716%27%20stroke%3D%27%23f43f5e%27%20stroke-width%3D%271.5%27%20stroke-linecap%3D%27round%27/%3E%3Cline%20x1%3D%2726%27%20y1%3D%2716%27%20x2%3D%2729%27%20y2%3D%2716%27%20stroke%3D%27%23f43f5e%27%20stroke-width%3D%271.5%27%20stroke-linecap%3D%27round%27/%3E%3C/svg%3E") 16 16, crosshair;
}

#canvas-container[data-tool="select"],
#canvas-container[data-tool="select"] canvas {
  cursor: url("data:image/svg+xml,%3Csvg%20xmlns%3D%27http%3A//www.w3.org/2000/svg%27%20width%3D%2732%27%20height%3D%2732%27%20viewBox%3D%270%200%2032%2032%27%20fill%3D%27none%27%3E%3Cpath%20d%3D%27M3%203%20L10%2024%20L14%2015%20L23%2011%20Z%27%20fill%3D%27rgba%280%2C0%2C0%2C0.35%29%27%20transform%3D%27translate%281.5%2C%202%29%27/%3E%3Cpath%20d%3D%27M3%203%20L10%2024%20L14%2015%20L23%2011%20Z%27%20fill%3D%27%230f172a%27%20stroke%3D%27%23ffffff%27%20stroke-width%3D%271.5%27%20stroke-linejoin%3D%27round%27/%3E%3Cpath%20d%3D%27M3%203%20L9%2015%20L14%2015%20L15%209%20Z%27%20fill%3D%27%2338bdf8%27/%3E%3C/svg%3E") 3 3, default;
}

#canvas-container[data-tool="pan"],
#canvas-container[data-tool="pan"] canvas {
  cursor: grab !important;
}

#canvas-container.is-panning,
#canvas-container.is-panning canvas {
  cursor: grabbing !important;
}

#canvas-container.is-hovering-selection,
#canvas-container.is-hovering-selection canvas {
  cursor: move !important;
}

#canvas-container.is-moving-selection,
#canvas-container.is-moving-selection canvas {
  cursor: move !important;
}

#canvas-container.is-marquee-selecting,
#canvas-container.is-marquee-selecting canvas {
  cursor: crosshair !important;
}

#canvas-container canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
}

#grid-canvas {
  z-index: 1;
  pointer-events: none;
}

#main-canvas {
  z-index: 2;
  pointer-events: none;
}

#draft-canvas {
  z-index: 3;
  pointer-events: auto;
}

/* Floating Selection Action Bar */
.selection-overlay-bar {
  position: absolute;
  z-index: 25;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 3px 6px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid rgba(56, 189, 248, 0.4);
  border-radius: var(--border-radius-pill);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.45), 0 0 14px rgba(56, 189, 248, 0.25);
  transform: translate(-50%, -100%);
  pointer-events: auto;
  user-select: none;
  animation: pop-in 0.15s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes pop-in {
  from {
    opacity: 0;
    transform: translate(-50%, -85%) scale(0.92);
  }
  to {
    opacity: 1;
    transform: translate(-50%, -100%) scale(1);
  }
}

.selection-bar-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px 8px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-family-base);
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--border-radius-pill);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.selection-bar-btn:hover {
  background: var(--hover-bg);
}

.selection-bar-btn:active {
  transform: scale(0.94);
}

.selection-bar-btn.btn-danger {
  color: #fb7185;
}

.selection-bar-btn.btn-danger:hover {
  background: rgba(244, 63, 94, 0.18);
  color: #f43f5e;
}

.selection-bar-divider {
  width: 1px;
  height: 14px;
  background: var(--border-subtle);
  margin: 0 2px;
}

/* ==========================================================================
   Tool Cursors: Pure Hardware SVG Mode (No Duplicate Overlays)
   ========================================================================== */

.brush-cursor {
  display: none !important;
}


/* ==========================================================================
   Top Header Navigation
   ========================================================================== */

.top-nav {
  position: fixed;
  top: 16px;
  left: 20px;
  right: 20px;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  z-index: 10;
  pointer-events: none;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 14px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: var(--border-radius-pill);
  box-shadow: var(--shadow-sm);
  pointer-events: auto;
}

.brand-logo {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-primary), #6366f1);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px var(--accent-glow);
}

.brand-info {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.pressure-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-muted);
}

.pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #10b981;
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
  animation: pulse-ring 2s infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 4px 6px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: var(--border-radius-pill);
  box-shadow: var(--shadow-sm);
  pointer-events: auto;
}

.divider-v {
  width: 1px;
  height: 16px;
  background-color: var(--border-subtle);
  margin: 0 2px;
}

/* ==========================================================================
   Floating Island Toolbar
   ========================================================================== */

.floating-dock {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: var(--border-radius-pill);
  box-shadow: var(--shadow-dock);
  z-index: 20;
  transition: transform var(--transition-smooth), opacity var(--transition-fast);
}

.tool-group {
  display: flex;
  align-items: center;
  gap: 3px;
}

.dock-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: var(--border-radius-pill);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-label {
  display: none;
}

.dock-btn:hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.dock-btn.active {
  background: var(--accent-primary);
  color: #fff;
  box-shadow: 0 4px 12px var(--accent-glow);
}

.dock-separator {
  width: 1px;
  height: 20px;
  background-color: var(--border-subtle);
  margin: 0 1px;
}

/* ==========================================================================
   Color Picker & Swatches
   ========================================================================== */

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

.swatches {
  display: flex;
  align-items: center;
  gap: 5px;
}

.swatch-btn {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: var(--swatch-color);
  border: 2px solid transparent;
  cursor: pointer;
  position: relative;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.swatch-btn:hover {
  transform: scale(1.18);
}

.swatch-btn.active {
  transform: scale(1.18);
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 2px var(--bg-surface), 0 0 6px var(--accent-glow);
}

.custom-color-trigger {
  position: relative;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  overflow: hidden;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-subtle);
  background: conic-gradient(red, yellow, lime, aqua, blue, magenta, red);
}

.custom-color-trigger input[type="color"] {
  position: absolute;
  top: -10px;
  left: -10px;
  width: 44px;
  height: 44px;
  opacity: 0;
  cursor: pointer;
}

.custom-color-preview {
  display: block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: transparent;
  pointer-events: none;
}

/* ==========================================================================
   Stroke Size Slider
   ========================================================================== */

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

.size-preview-wrapper {
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.size-preview-dot {
  display: block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: var(--text-primary);
  transition: width 100ms ease, height 100ms ease;
}

.size-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 60px;
  height: 4px;
  background: var(--border-subtle);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.size-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent-primary);
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  transition: transform var(--transition-fast);
}

.size-slider::-webkit-slider-thumb:hover {
  transform: scale(1.25);
}

.size-value {
  font-size: 11px;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-muted);
  min-width: 24px;
}

/* ==========================================================================
   History & Action Buttons
   ========================================================================== */

.history-group {
  display: flex;
  align-items: center;
  gap: 2px;
}

.dock-action-btn {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.dock-action-btn:hover:not(:disabled) {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
  transform: translateY(-1px);
}

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

.dock-action-btn.btn-danger:hover {
  background: rgba(244, 63, 94, 0.15);
  color: var(--danger);
}

/* Generic Icon Buttons */
.icon-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
  transform: scale(1.06);
}

.icon-btn.btn-primary {
  background: var(--accent-primary);
  color: #fff;
  box-shadow: 0 2px 8px var(--accent-glow);
}

.icon-btn.btn-primary:hover {
  background: #0284c7;
  color: #fff;
  transform: scale(1.06);
}

/* Primary and Solid Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--border-radius-pill);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
}

.btn-primary {
  background: var(--accent-primary);
  color: #fff;
  box-shadow: 0 2px 8px var(--accent-glow);
}

.btn-primary:hover {
  background: var(--accent-primary-hover);
  transform: translateY(-1px);
}

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

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
}

.btn-danger-solid {
  background: var(--danger);
  color: #fff;
}

.btn-danger-solid:hover {
  background: var(--danger-hover);
}

/* Theme Icon Visibility */
[data-theme="dark"] .moon-icon { display: none; }
[data-theme="dark"] .sun-icon { display: block; }
[data-theme="light"] .sun-icon { display: none; }
[data-theme="light"] .moon-icon { display: block; }

/* ==========================================================================
   Modals & Dialogs
   ========================================================================== */

.modal-dialog {
  border: none;
  background: transparent;
  padding: 0;
  margin: auto;
  outline: none;
}

.modal-dialog::backdrop {
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.modal-card {
  width: 90vw;
  max-width: 440px;
  background: var(--bg-card);
  border: var(--glass-border);
  border-radius: var(--border-radius-lg);
  padding: 24px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
  color: var(--text-primary);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.modal-header h3 {
  font-size: 17px;
  font-weight: 700;
}

.close-btn {
  font-size: 16px;
  font-weight: 700;
}

.modal-body {
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* Export Dialog Options */
.export-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.radio-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.radio-option:hover {
  border-color: var(--accent-primary);
}

.radio-option input[type="radio"] {
  accent-color: var(--accent-primary);
}

/* Shortcuts Dialog */
.shortcuts-card {
  max-width: 520px;
}

.shortcuts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}

.shortcut-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-secondary);
}

kbd {
  display: inline-block;
  padding: 3px 7px;
  font-size: 11px;
  font-family: 'JetBrains Mono', monospace;
  background: var(--bg-surface-hover);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  color: var(--text-primary);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.stylus-note {
  padding: 12px 14px;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: var(--border-radius-md);
  font-size: 12px;
  line-height: 1.5;
  color: var(--accent-primary);
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */

/* ==========================================================================
   Floating Viewport & Zoom Navigation Dock
   ========================================================================== */

.zoom-dock {
  position: fixed;
  bottom: 24px;
  left: 24px;
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 4px 6px;
  background: var(--dock-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--dock-border);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-dock);
  z-index: 20;
  user-select: none;
  transition: transform var(--transition-bounce), opacity var(--transition-normal);
}

.zoom-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

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

.zoom-btn:active {
  transform: scale(0.92);
}

.zoom-level-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 6px;
  height: 30px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  min-width: 44px;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.zoom-level-btn:hover {
  background: var(--hover-bg);
  color: var(--accent);
}

.zoom-divider {
  width: 1px;
  height: 16px;
  background: var(--divider);
  margin: 0 2px;
}

@media (max-width: 768px) {
  .floating-dock {
    bottom: 12px;
    width: calc(100vw - 24px);
    padding: 6px 10px;
    overflow-x: auto;
    justify-content: flex-start;
  }
  
  .zoom-dock {
    bottom: 74px;
    left: 12px;
    padding: 3px 5px;
  }

  .btn-label {
    display: none;
  }
  
  .dock-btn {
    padding: 8px 10px;
  }
  
  .size-slider {
    width: 60px;
  }
  
  .shortcuts-grid {
    grid-template-columns: 1fr;
  }
}