/**
 * Touch UI Styling for yaze WASM build
 *
 * Provides touch-friendly UI adaptations for iPad and tablet browsers:
 * - Larger hit targets for buttons (44x44px minimum per Apple HIG)
 * - Touch-friendly scrollbars
 * - Visual feedback for touch interactions
 * - Hide cursor when touch is active
 * - Proper touch-action configuration
 */

/* =============================================================================
   Touch Mode Detection
   Uses a CSS custom property that can be toggled via JavaScript
============================================================================= */

:root {
  --yaze-touch-mode: 0;
  --yaze-min-touch-target: 44px;
  --yaze-touch-padding: 8px;
  --yaze-ripple-color: rgba(14, 99, 156, 0.4);
  --yaze-ripple-duration: 300ms;
}

/* Applied when touch mode is active */
body.yaze-touch-mode {
  --yaze-touch-mode: 1;
  cursor: none;
}

/* =============================================================================
   Canvas Touch Configuration
============================================================================= */

#canvas,
canvas.emscripten {
  /* Disable all browser touch handling - we handle it ourselves */
  touch-action: none;

  /* Disable text selection */
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;

  /* Disable callout on long-press (iOS Safari) */
  -webkit-touch-callout: none;

  /* Disable tap highlight (Android Chrome) */
  -webkit-tap-highlight-color: transparent;
}

/* When touch is active, hide the cursor on the canvas */
body.yaze-touch-mode #canvas,
body.yaze-touch-mode canvas.emscripten {
  cursor: none;
}

/* =============================================================================
   Touch Ripple Effect
   Visual feedback for tap interactions
============================================================================= */

.yaze-touch-ripple {
  position: fixed;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: var(--yaze-ripple-color);
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 10000;
  opacity: 1;
  transition: none;
}

.yaze-touch-ripple-active {
  width: 80px;
  height: 80px;
  opacity: 0;
  transition:
    width var(--yaze-ripple-duration) ease-out,
    height var(--yaze-ripple-duration) ease-out,
    opacity var(--yaze-ripple-duration) ease-out;
}

/* Long press ripple - larger and different color */
.yaze-touch-ripple-long-press {
  background: rgba(255, 193, 7, 0.5);
}

.yaze-touch-ripple-long-press.yaze-touch-ripple-active {
  width: 120px;
  height: 120px;
}

/* =============================================================================
   Touch-Friendly Buttons
   Ensure all interactive elements meet minimum touch target size
============================================================================= */

body.yaze-touch-mode button,
body.yaze-touch-mode .yaze-button,
body.yaze-touch-mode [role="button"],
body.yaze-touch-mode input[type="button"],
body.yaze-touch-mode input[type="submit"],
body.yaze-touch-mode input[type="reset"] {
  min-width: var(--yaze-min-touch-target);
  min-height: var(--yaze-min-touch-target);
  padding: var(--yaze-touch-padding) 16px;

  /* Ensure adequate spacing between touch targets */
  margin: 4px;

  /* Visual feedback on touch */
  transition: transform 0.1s ease, background-color 0.1s ease;
}

body.yaze-touch-mode button:active,
body.yaze-touch-mode .yaze-button:active,
body.yaze-touch-mode [role="button"]:active {
  transform: scale(0.95);
}

/* =============================================================================
   Touch-Friendly Form Controls
============================================================================= */

body.yaze-touch-mode input[type="text"],
body.yaze-touch-mode input[type="number"],
body.yaze-touch-mode input[type="search"],
body.yaze-touch-mode input[type="email"],
body.yaze-touch-mode input[type="password"],
body.yaze-touch-mode select,
body.yaze-touch-mode textarea {
  min-height: var(--yaze-min-touch-target);
  padding: var(--yaze-touch-padding) 12px;
  font-size: 16px; /* Prevents auto-zoom on iOS */
}

body.yaze-touch-mode input[type="checkbox"],
body.yaze-touch-mode input[type="radio"] {
  min-width: 24px;
  min-height: 24px;

  /* Add padding around checkboxes for easier tapping */
  margin: 10px;
}

/* =============================================================================
   Touch-Friendly Scrollbars
   Larger, more visible scrollbars for touch interaction
============================================================================= */

body.yaze-touch-mode ::-webkit-scrollbar {
  width: 16px;
  height: 16px;
}

body.yaze-touch-mode ::-webkit-scrollbar-track {
  background: rgba(30, 30, 30, 0.3);
  border-radius: 8px;
}

body.yaze-touch-mode ::-webkit-scrollbar-thumb {
  background: rgba(100, 100, 100, 0.6);
  border-radius: 8px;
  border: 2px solid transparent;
  background-clip: padding-box;
  min-height: 40px;
}

body.yaze-touch-mode ::-webkit-scrollbar-thumb:hover,
body.yaze-touch-mode ::-webkit-scrollbar-thumb:active {
  background: rgba(140, 140, 140, 0.8);
  background-clip: padding-box;
}

/* Firefox scrollbar styling */
body.yaze-touch-mode * {
  scrollbar-width: auto;
  scrollbar-color: rgba(100, 100, 100, 0.6) rgba(30, 30, 30, 0.3);
}

/* =============================================================================
   Header and Controls Touch Adaptation
============================================================================= */

body.yaze-touch-mode #header {
  min-height: 56px;
  padding: 8px 16px;
}

body.yaze-touch-mode #controls {
  gap: 12px;
}

body.yaze-touch-mode #controls button {
  padding: 10px 20px;
  font-size: 15px;
}

/* File input touch styling */
body.yaze-touch-mode #rom-input + label,
body.yaze-touch-mode .yaze-file-input-label {
  min-width: var(--yaze-min-touch-target);
  min-height: var(--yaze-min-touch-target);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--yaze-touch-padding) 16px;
}

/* =============================================================================
   Touch Indicator
   Shows a visual indicator that touch mode is active
============================================================================= */

.yaze-touch-indicator {
  position: fixed;
  top: 70px;
  right: 20px;
  background: rgba(14, 99, 156, 0.9);
  color: white;
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 12px;
  z-index: 1000;
  pointer-events: none;
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

body.yaze-touch-mode .yaze-touch-indicator {
  opacity: 1;
  transform: translateY(0);
}

/* =============================================================================
   Gesture Hints
   Visual hints for available gestures
============================================================================= */

.yaze-gesture-hint {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 14px;
  text-align: center;
  z-index: 999;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.yaze-gesture-hint.visible {
  opacity: 1;
}

.yaze-gesture-hint-icon {
  display: inline-block;
  margin-right: 8px;
  font-size: 18px;
}

/* =============================================================================
   Zoom Controls Overlay
   Touch-friendly zoom controls for canvas
============================================================================= */

.yaze-zoom-controls {
  position: fixed;
  right: 20px;
  bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

body.yaze-touch-mode .yaze-zoom-controls {
  opacity: 1;
  pointer-events: auto;
}

.yaze-zoom-controls button {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(37, 37, 38, 0.9);
  border: 1px solid rgba(62, 62, 66, 0.8);
  color: #cccccc;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.yaze-zoom-controls button:hover {
  background: rgba(50, 50, 52, 0.95);
}

.yaze-zoom-controls button:active {
  transform: scale(0.9);
  background: rgba(14, 99, 156, 0.9);
}

.yaze-zoom-level {
  width: 48px;
  height: 32px;
  background: rgba(37, 37, 38, 0.9);
  border: 1px solid rgba(62, 62, 66, 0.8);
  border-radius: 4px;
  color: #cccccc;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* =============================================================================
   Context Menu Touch Styling
   Make context menus touch-friendly
============================================================================= */

body.yaze-touch-mode .yaze-context-menu,
body.yaze-touch-mode .imgui-context-menu {
  min-width: 200px;
}

body.yaze-touch-mode .yaze-context-menu-item,
body.yaze-touch-mode .imgui-menu-item {
  min-height: var(--yaze-min-touch-target);
  padding: 12px 16px;
  display: flex;
  align-items: center;
}

/* =============================================================================
   Touch Keyboard Handling
   Adjust layout when virtual keyboard appears
============================================================================= */

@media (max-height: 500px) {
  /* Likely keyboard is open - adjust header */
  body.yaze-touch-mode #header {
    min-height: 40px;
    padding: 4px 12px;
  }

  body.yaze-touch-mode #header h1 {
    font-size: 14px;
  }

  body.yaze-touch-mode #controls button {
    padding: 6px 12px;
    font-size: 13px;
  }
}

/* =============================================================================
   iPad-Specific Styles
============================================================================= */

@supports (-webkit-touch-callout: none) {
  /* iOS/iPadOS specific */

  body.yaze-touch-mode {
    /* Prevent overscroll bounce effect */
    overscroll-behavior: none;
    -webkit-overflow-scrolling: touch;
  }

  /* Safe area insets for notched devices */
  #header {
    padding-left: max(20px, env(safe-area-inset-left));
    padding-right: max(20px, env(safe-area-inset-right));
    padding-top: max(10px, env(safe-area-inset-top));
  }

  #canvas-container {
    padding-bottom: env(safe-area-inset-bottom);
  }
}

/* =============================================================================
   Touch Mode Transition Animations
============================================================================= */

/* Smooth transition when entering/exiting touch mode */
button,
input,
select,
textarea,
.yaze-button,
[role="button"] {
  transition:
    min-width 0.2s ease,
    min-height 0.2s ease,
    padding 0.2s ease;
}

/* =============================================================================
   Accessibility - High Contrast Mode
============================================================================= */

@media (prefers-contrast: high) {
  body.yaze-touch-mode button:focus,
  body.yaze-touch-mode input:focus,
  body.yaze-touch-mode select:focus,
  body.yaze-touch-mode textarea:focus {
    outline: 3px solid white;
    outline-offset: 2px;
  }

  .yaze-touch-ripple {
    background: rgba(255, 255, 255, 0.5);
  }
}

/* =============================================================================
   Reduced Motion Support
============================================================================= */

@media (prefers-reduced-motion: reduce) {
  .yaze-touch-ripple,
  .yaze-touch-ripple-active {
    transition: none;
  }

  body.yaze-touch-mode button:active,
  body.yaze-touch-mode .yaze-button:active {
    transform: none;
  }

  .yaze-zoom-controls button:active {
    transform: none;
  }
}

/* =============================================================================
   Print Styles - Hide Touch UI
============================================================================= */

@media print {
  .yaze-touch-ripple,
  .yaze-touch-indicator,
  .yaze-gesture-hint,
  .yaze-zoom-controls {
    display: none !important;
  }
}