/* =================================================================
   HTML Tag Remover - CSS
   WordPress Web Tool with Neobrutalism Design
   ================================================================= */

/* Global box-sizing */
.html-tag-remover-container,
.html-tag-remover-container *,
.html-tag-remover-container *::before,
.html-tag-remover-container *::after {
  box-sizing: border-box;
}

/* =================================================================
   CSS Variables - Light Mode (Default)
   ================================================================= */
.html-tag-remover-container {
  /* Background colors */
  --bg-primary: #f5f5f0;
  --bg-secondary: #fff;
  --bg-section: #fff;
  
  /* Borders */
  --border-color: #333;
  
  /* Text colors */
  --text-primary: #222;
  --text-secondary: #555;
  --text-light: #666;
  
  /* Brand colors */
  --color-accent: #3498db;
  --color-success: #27ae60;
  --color-warning: #f39c12;
  --color-danger: #e74c3c;
  --color-purple: #9b59b6;
  --color-teal: #1abc9c;
  
  /* Shadows (neobrutalism) */
  --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);
  
  /* Border radius */
  --radius-container: 8px;
  --radius-section: 6px;
  --radius-button: 4px;
  --radius-input: 4px;
  
  /* Input focus */
  --input-focus-bg: #fffacd;
  
  /* Header title */
  --title-color: #2c3e50;
  --title-shadow: 2px 2px 0 rgba(255,255,255,0.5);
  
  /* Button hover background */
  --btn-hover-overlay: rgba(0,0,0,0.1);
  
  /* Copy button background */
  --copy-btn-bg: #fff;
  --copy-btn-hover-bg: #f0f0f0;
}

/* =================================================================
   CSS Variables - Dark Mode (Manual)
   ================================================================= */
.html-tag-remover-container.dark {
  /* Background colors */
  --bg-primary: #1a1a1a;
  --bg-secondary: #2d2d2d;
  --bg-section: #2d2d2d;
  
  /* Borders */
  --border-color: #e0e0e0;
  
  /* Text colors */
  --text-primary: #e8e8e8;
  --text-secondary: #b0b0b0;
  --text-light: #909090;
  
  /* Brand colors */
  --color-accent: #5dade2;
  --color-success: #52c77a;
  --color-warning: #f5b041;
  --color-danger: #ec7063;
  --color-purple: #af7ac5;
  --color-teal: #48d1cc;
  
  /* Shadows */
  --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 */
  --input-focus-bg: #3a3a3a;
  
  /* Header title */
  --title-color: #7fb3d5;
  --title-shadow: 2px 2px 0 rgba(0,0,0,0.5);
  
  /* Button hover background */
  --btn-hover-overlay: rgba(255,255,255,0.1);
  
  /* Copy button background */
  --copy-btn-bg: #3a3a3a;
  --copy-btn-hover-bg: #4a4a4a;
}

/* =================================================================
   CSS Variables - Dark Mode (System Preference)
   ================================================================= */
@media (prefers-color-scheme: dark) {
  .html-tag-remover-container:not(.dark):not(.light) {
    /* Background colors */
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-section: #2d2d2d;
    
    /* Borders */
    --border-color: #e0e0e0;
    
    /* Text colors */
    --text-primary: #e8e8e8;
    --text-secondary: #b0b0b0;
    --text-light: #909090;
    
    /* Brand colors */
    --color-accent: #5dade2;
    --color-success: #52c77a;
    --color-warning: #f5b041;
    --color-danger: #ec7063;
    --color-purple: #af7ac5;
    --color-teal: #48d1cc;
    
    /* Shadows */
    --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 */
    --input-focus-bg: #3a3a3a;
    
    /* Header title */
    --title-color: #7fb3d5;
    --title-shadow: 2px 2px 0 rgba(0,0,0,0.5);
    
    /* Button hover background */
    --btn-hover-overlay: rgba(255,255,255,0.1);
    
    /* Copy button background */
    --copy-btn-bg: #3a3a3a;
    --copy-btn-hover-bg: #4a4a4a;
  }
}

/* =================================================================
   Main Container
   ================================================================= */
.html-tag-remover-container {
  position: relative;
  max-width: 900px;
  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 Toggle Button
   ================================================================= */
.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-button);
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
  font-size: 17.5px;
  font-weight: 600;
  color: var(--text-primary);
  z-index: 10;
}

.dark-mode-toggle:hover {
  transform: translate(0.5px, 0.5px);
  box-shadow: 1.5px 1.5px 0 rgba(0,0,0,0.15);
}

.dark-mode-toggle:active {
  transform: translate(2px, 2px);
  box-shadow: none;
}

/* =================================================================
   Main Title & Description
   ================================================================= */
.main-title {
  text-align: center;
  font-size: 30px;
  font-weight: 700;
  margin: 0 0 6px 0;
  color: var(--title-color);
  text-shadow: var(--title-shadow);
}

.main-description {
  text-align: center;
  font-size: 16px;
  margin: 0 0 20px 0;
  color: var(--text-secondary);
}

/* =================================================================
   2-Column Grid Layout
   ================================================================= */
.main-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 8px;
}

/* =================================================================
   Sections (Input & Result)
   ================================================================= */
.input-section,
.result-section {
  background: var(--bg-section);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-section);
  padding: 12px;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.section-title {
  font-size: 20px;
  font-weight: 600;
  margin: 0;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border-color);
}

.title-icon {
  color: var(--color-accent);
}

/* =================================================================
   Upload Zone
   ================================================================= */
.upload-zone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-input);
  padding: 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s;
  background: var(--bg-primary);
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--color-accent);
  background: var(--input-focus-bg);
  transform: scale(1.01);
}

.upload-icon {
  color: var(--color-accent);
  margin-bottom: 8px;
}

.upload-text {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 4px 0;
}

.upload-subtext {
  font-size: 14px;
  color: var(--text-light);
  margin: 0;
}

/* =================================================================
   Textarea Input/Output
   ================================================================= */
.input-wrapper,
.output-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.html-textarea,
.output-textarea {
  width: 100%;
  min-height: 220px;
  padding: 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-input);
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 14px;
  color: var(--text-primary);
  background: var(--bg-secondary);
  resize: vertical;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
  line-height: 1.5;
}

.html-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background: var(--input-focus-bg);
  box-shadow: var(--shadow-md);
}

.output-textarea {
  background: var(--bg-primary);
}

/* =================================================================
   Options Group
   ================================================================= */
.options-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.option-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  color: var(--text-primary);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-button);
  transition: background 0.2s;
}

.option-label:hover {
  background: var(--btn-hover-overlay);
}

.option-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--color-accent);
}

/* =================================================================
   Advanced Options
   ================================================================= */
.btn-toggle {
  padding: 8px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-button);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
}

.btn-toggle:hover {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 rgba(0,0,0,0.15);
}

.btn-toggle:active {
  transform: translate(2px, 2px);
  box-shadow: none;
}

.btn-toggle.active {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.advanced-options {
  display: none;
  flex-direction: column;
  gap: 10px;
  padding: 12px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-input);
}

.advanced-options.show {
  display: flex;
}

.advanced-label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 16px;
  color: var(--text-primary);
}

.custom-tags-input {
  padding: 8px 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-input);
  font-size: 16px;
  color: var(--text-primary);
  background: var(--bg-secondary);
  transition: all 0.2s;
}

.custom-tags-input:focus {
  outline: none;
  border-color: var(--color-accent);
  background: var(--input-focus-bg);
}

.radio-group {
  display: flex;
  gap: 16px;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 16px;
  color: var(--text-primary);
  cursor: pointer;
}

.radio-label input[type="radio"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--color-accent);
}

/* =================================================================
   Statistics Grid
   ================================================================= */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.stat-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-input);
  padding: 10px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0 0 6px 0;
}

.stat-value {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-accent);
  margin: 0;
}

.stat-value.stat-highlight {
  color: var(--color-success);
  font-size: 24px;
}

/* =================================================================
   Chart Wrapper
   ================================================================= */
.chart-wrapper {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-input);
  padding: 12px;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

#sizeChart {
  max-width: 100%;
  max-height: 100%;
}

/* =================================================================
   Button Groups
   ================================================================= */
.button-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* Primary button (main action) */
.btn-primary {
  flex: 1;
  min-width: 140px;
  padding: 12px 20px;
  background: var(--color-accent);
  color: #fff;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-button);
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.btn-primary:hover {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 rgba(0,0,0,0.15);
}

.btn-primary:active {
  transform: translate(4px, 4px);
  box-shadow: none;
}

/* Reset button (warning action) */
.btn-reset {
  flex: 1;
  min-width: 100px;
  padding: 10px 16px;
  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 0.2s;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.btn-reset:hover {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 rgba(0,0,0,0.15);
}

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

/* Success buttons (copy, download) */
.btn-success {
  flex: 1;
  min-width: 120px;
  padding: 10px 16px;
  background: var(--color-success);
  color: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-button);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.btn-success:hover {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 rgba(0,0,0,0.15);
}

.btn-success:active {
  transform: translate(2px, 2px);
  box-shadow: none;
}

/* =================================================================
   Toast Notification
   ================================================================= */
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 12px 20px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-button);
  box-shadow: var(--shadow-lg);
  font-size: 16px;
  font-weight: 600;
  opacity: 0;
  transition: all 0.3s;
  z-index: 1000;
  max-width: 90%;
  text-align: center;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.toast.success {
  border-color: var(--color-success);
  color: var(--color-success);
}

.toast.error {
  border-color: var(--color-danger);
  color: var(--color-danger);
}

/* =================================================================
   Responsive Design - Tablet
   ================================================================= */
@media screen and (max-width: 768px) {
  .html-tag-remover-container {
    padding: 10px;
    margin: 10px auto;
  }

  /* Single column layout on mobile */
  .main-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .main-title {
    font-size: 26px;
    margin-top: 30px;
  }

  .main-description {
    font-size: 15px;
  }

  .stats-grid {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .button-group {
    flex-direction: column;
  }

  .btn-primary,
  .btn-reset,
  .btn-success {
    width: 100%;
    min-width: auto;
  }

  .chart-wrapper {
    height: 150px;
  }

  .radio-group {
    flex-direction: column;
    gap: 8px;
  }
}

/* =================================================================
   Responsive Design - Mobile
   ================================================================= */
@media screen and (max-width: 480px) {
  .html-tag-remover-container {
    padding: 6px;
    margin: 6px auto;
    border-width: 1px;
  }

  .main-title {
    font-size: 22px;
  }

  .main-description {
    font-size: 14px;
  }

  .input-section,
  .result-section {
    padding: 10px;
  }

  .section-title {
    font-size: 18px;
  }

  .html-textarea,
  .output-textarea {
    min-height: 180px;
    font-size: 13px;
  }

  .upload-zone {
    padding: 16px;
  }

  .upload-text {
    font-size: 14px;
  }

  .upload-subtext {
    font-size: 12px;
  }

  .chart-wrapper {
    height: 120px;
  }

  .dark-mode-toggle {
    top: 6px;
    right: 6px;
    padding: 4px 8px;
    font-size: 16px;
  }
}