/* Letter Spacing Adjuster CSS - Optimized Structure */

/* Main Container with Global Box Sizing */
.letter-spacing-adjuster-container,
.letter-spacing-adjuster-container *,
.letter-spacing-adjuster-container *::before,
.letter-spacing-adjuster-container *::after {
  box-sizing: border-box;
}

.letter-spacing-adjuster-container {
  /* Colors - Light Mode */
  --bg-primary: #f5f5f0;
  --bg-secondary: #fff;
  --bg-section: #fff;
  --bg-input: #fff;
  --border-color: #333;
  --text-primary: #222;
  --text-secondary: #555;
  --text-light: #666;
  --color-accent: #3498db;
  --color-success: #27ae60;
  --color-warning: #f39c12;
  --color-danger: #e74c3c;
  --color-purple: #9b59b6;
  
  /* Shadows */
  --shadow-sm: 2px 2px 0 rgba(0,0,0,0.1);
  --shadow-md: 4px 4px 0 rgba(0,0,0,0.15);
  --shadow-lg: 8px 8px 0 rgba(0,0,0,0.15);
  
  /* Radius */
  --radius-container: 8px;
  --radius-section: 6px;
  --radius-button: 4px;
  --radius-input: 4px;
  
  /* Input Focus */
  --input-focus-bg: #fffacd;
  --code-bg: #f8f9fa;
  
  position: relative;
  max-width: 1000px;
  width: 100%;
  margin: 8px auto;
  padding: 8px;
  background: var(--bg-primary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-container);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Malgun Gothic', sans-serif;
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
  line-height: 1.5;
}

/* Dark Mode Variables */
.letter-spacing-adjuster-container.dark {
  --bg-primary: #1a1a1a;
  --bg-secondary: #2d2d2d;
  --bg-section: #2d2d2d;
  --bg-input: #3a3a3a;
  --border-color: #e0e0e0;
  --text-primary: #e8e8e8;
  --text-secondary: #b0b0b0;
  --text-light: #909090;
  --color-accent: #5dade2;
  --color-success: #52c77a;
  --color-warning: #f5b041;
  --color-danger: #ec7063;
  --color-purple: #af7ac5;
  --shadow-sm: 2px 2px 0 rgba(255,255,255,0.08);
  --shadow-md: 4px 4px 0 rgba(255,255,255,0.12);
  --shadow-lg: 8px 8px 0 rgba(255,255,255,0.12);
  --input-focus-bg: #4a4a4a;
  --code-bg: #333;
}

/* System Dark Mode Auto Detection */
@media (prefers-color-scheme: dark) {
  .letter-spacing-adjuster-container:not(.dark):not(.light) {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-section: #2d2d2d;
    --bg-input: #3a3a3a;
    --border-color: #e0e0e0;
    --text-primary: #e8e8e8;
    --text-secondary: #b0b0b0;
    --text-light: #909090;
    --color-accent: #5dade2;
    --color-success: #52c77a;
    --color-warning: #f5b041;
    --color-danger: #ec7063;
    --color-purple: #af7ac5;
    --shadow-sm: 2px 2px 0 rgba(255,255,255,0.08);
    --shadow-md: 4px 4px 0 rgba(255,255,255,0.12);
    --shadow-lg: 8px 8px 0 rgba(255,255,255,0.12);
    --input-focus-bg: #4a4a4a;
    --code-bg: #333;
  }
}

/* Header */
.letter-spacing-adjuster-container .header {
  margin-bottom: 12px;
}

.letter-spacing-adjuster-container .main-title {
  font-size: 28px;
  font-weight: 800;
  margin: 0 0 4px 0;
  color: var(--text-primary);
  line-height: 1.2;
}

.letter-spacing-adjuster-container .subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  margin: 0;
}

/* Dark Mode Toggle */
.letter-spacing-adjuster-container .dark-mode-toggle {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 6px 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-container);
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
  font-size: 17.5px;
  color: var(--text-primary);
  z-index: 10;
}

.letter-spacing-adjuster-container .dark-mode-toggle:hover {
  transform: translate(0.5px, 0.5px);
  box-shadow: none;
}

/* 2-Column Grid Layout */
.letter-spacing-adjuster-container .main-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

/* Sections */
.letter-spacing-adjuster-container .input-section,
.letter-spacing-adjuster-container .result-section {
  background: var(--bg-section);
  padding: 8px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-section);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  min-width: 0; /* Prevent grid overflow */
}

.letter-spacing-adjuster-container .section-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-color);
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
}

.letter-spacing-adjuster-container .control-group {
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--text-light);
}

.letter-spacing-adjuster-container .control-group:last-of-type {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.letter-spacing-adjuster-container .grid-2-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

/* Input Styles */
.letter-spacing-adjuster-container .input-group {
  margin-bottom: 8px;
  min-width: 0; /* Prevent overflow */
}

.letter-spacing-adjuster-container label {
  display: block;
  margin-bottom: 4px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-primary);
}

.letter-spacing-adjuster-container .flex-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.letter-spacing-adjuster-container .value-display {
  font-family: 'Courier New', monospace;
  font-weight: 700;
  color: var(--color-accent);
}

/* Highlighted Box for Slider */
.letter-spacing-adjuster-container .highlight-box {
  background: var(--bg-primary);
  padding: 8px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-input);
}

.letter-spacing-adjuster-container input[type="text"],
.letter-spacing-adjuster-container input[type="number"],
.letter-spacing-adjuster-container select,
.letter-spacing-adjuster-container textarea {
  width: 100%;
  max-width: 100%; /* Prevent overflow */
  padding: 8px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-input);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 18px;
  font-family: inherit;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
}

.letter-spacing-adjuster-container textarea {
  resize: vertical;
  min-height: 80px;
  overflow-wrap: break-word;
  word-wrap: break-word;
}

.letter-spacing-adjuster-container input:focus,
.letter-spacing-adjuster-container select:focus,
.letter-spacing-adjuster-container textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background: var(--input-focus-bg);
}

/* Numeric Font */
.letter-spacing-adjuster-container .numeric-input {
  font-family: 'Courier New', monospace;
  font-weight: 700;
}

/* Slider Style */
.letter-spacing-adjuster-container .slider-container {
  padding: 10px 0;
}

.letter-spacing-adjuster-container input[type="range"] {
  width: 100%;
  height: 6px;
  background: var(--border-color);
  border-radius: 3px;
  outline: none;
  -webkit-appearance: none;
}

.letter-spacing-adjuster-container input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  background: var(--color-accent);
  border: 2px solid var(--bg-secondary);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 1px 1px 2px rgba(0,0,0,0.3);
  transition: transform 0.1s;
}

.letter-spacing-adjuster-container input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.1);
}

.letter-spacing-adjuster-container input[type="range"]::-moz-range-thumb {
  width: 22px;
  height: 22px;
  background: var(--color-accent);
  border: 2px solid var(--bg-secondary);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 1px 1px 2px rgba(0,0,0,0.3);
  transition: transform 0.1s;
}

/* Presets */
.letter-spacing-adjuster-container .preset-buttons {
  display: flex;
  gap: 6px;
  margin-top: 6px;
  flex-wrap: wrap;
}

.letter-spacing-adjuster-container .preset-btn {
  flex: 1;
  min-width: 40px;
  padding: 6px 4px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-button);
  font-size: 14px;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.15s;
  text-align: center;
}

.letter-spacing-adjuster-container .preset-btn:hover {
  background: var(--bg-primary);
  border-color: var(--color-accent);
}

.letter-spacing-adjuster-container .preset-btn.active {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--border-color);
}

/* Reset Button */
.letter-spacing-adjuster-container .reset-btn {
  width: 100%;
  padding: 8px 16px;
  margin-top: 8px;
  background: var(--color-warning);
  color: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-button);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  box-shadow: 2px 2px 0 rgba(0,0,0,0.2);
}

.letter-spacing-adjuster-container .reset-btn:hover {
  transform: translate(0.5px, 0.5px);
  box-shadow: 1.5px 1.5px 0 rgba(0,0,0,0.2);
}

.letter-spacing-adjuster-container .reset-btn:active {
  transform: translate(2px, 2px);
  box-shadow: none;
}

/* Result Preview Wrapper - Overflow Prevention */
.letter-spacing-adjuster-container .preview-wrapper {
  position: relative;
  flex: 1;
  min-height: 250px;
  padding: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-section);
  margin-bottom: 8px;
  overflow: hidden; /* Prevent container expansion */
  display: flex;
  flex-direction: column;
}

/* Actual Text Content - Enhanced Overflow Prevention */
.letter-spacing-adjuster-container .text-preview-content {
  width: 100%;
  max-width: 100%;
  color: var(--text-primary);
  
  /* Text Wrapping Logic */
  word-wrap: break-word;
  overflow-wrap: break-word;
  word-break: break-word;
  white-space: pre-wrap;
  
  /* Prevent horizontal overflow */
  overflow-x: hidden;
  overflow-y: auto;
  
  /* Transition for smooth adjustments */
  transition: letter-spacing 0.1s, line-height 0.1s;
}

/* CSS Output */
.letter-spacing-adjuster-container .css-output-container {
  margin-bottom: 8px;
}

.letter-spacing-adjuster-container .result-label {
  display: block;
  margin-bottom: 4px;
  font-size: 15.5px;
  font-weight: 500;
  color: var(--text-secondary);
}

.letter-spacing-adjuster-container .code-block {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  background: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-button);
  padding: 8px;
  min-width: 0; /* Prevent overflow */
}

.letter-spacing-adjuster-container code {
  font-family: 'Courier New', monospace;
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 600;
  overflow-x: auto;
  white-space: nowrap;
  flex: 1;
  min-width: 0;
  
  /* Hide scrollbar but keep functionality */
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.letter-spacing-adjuster-container code::-webkit-scrollbar {
  display: none;
}

.letter-spacing-adjuster-container .copy-btn {
  padding: 4px 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 3px;
  font-size: 14px;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 1px 1px 0 rgba(0,0,0,0.1);
  white-space: nowrap;
  flex-shrink: 0;
}

.letter-spacing-adjuster-container .copy-btn:hover {
  background: var(--bg-primary);
  transform: translate(0.5px, 0.5px);
  box-shadow: none;
}

/* Save Image Button */
.letter-spacing-adjuster-container .save-image-btn {
  width: 100%;
  padding: 8px 16px;
  background: var(--color-purple);
  color: #fff;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-button);
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  box-shadow: 4px 4px 0 rgba(0,0,0,0.2);
}

.letter-spacing-adjuster-container .save-image-btn:hover {
  filter: brightness(1.05);
  transform: translate(1px, 1px);
  box-shadow: 3px 3px 0 rgba(0,0,0,0.2);
}

.letter-spacing-adjuster-container .save-image-btn:active {
  transform: translate(4px, 4px);
  box-shadow: none;
}

.letter-spacing-adjuster-container .save-image-btn.capturing {
  display: none;
}

/* Watermark */
.letter-spacing-adjuster-container .watermark {
  margin-top: auto;
  padding-top: 20px;
  text-align: right;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-light);
  opacity: 0.6;
}

/* Toast */
.letter-spacing-adjuster-container .toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  padding: 10px 16px;
  background: var(--text-primary);
  color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-button);
  font-size: 16px;
  font-weight: 500;
  box-shadow: 4px 4px 0 rgba(0,0,0,0.3);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
}

.letter-spacing-adjuster-container .toast.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(-5px);
}

.letter-spacing-adjuster-container .toast.success {
  background: var(--color-success);
  color: #fff;
}

/* Responsive */
@media (max-width: 768px) {
  .letter-spacing-adjuster-container {
    margin: 6px 5px;
    padding: 7px;
    width: calc(100% - 10px);
  }

  .letter-spacing-adjuster-container .main-grid {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  
  .letter-spacing-adjuster-container .preview-wrapper {
    min-height: 200px;
  }
}

@media (max-width: 480px) {
  .letter-spacing-adjuster-container {
    padding: 6px;
    border-width: 1px;
  }
  
  .letter-spacing-adjuster-container .grid-2-col {
    grid-template-columns: 1fr;
  }
  
  .letter-spacing-adjuster-container .main-title {
    font-size: 24px;
  }
  
  .letter-spacing-adjuster-container .subtitle {
    font-size: 15px;
  }
}