/* ========================================
   TechGyan360 Tools - Tool Page Styles
   Specialized styles for tool interfaces
   ======================================== */

/* ========== TOOL PAGE LAYOUT ========== */
.tool-page {
  padding-top: 0; /* header is static (matches main site), no offset needed */
  min-height: 60vh;
}

.tool-hero {
  padding: var(--space-12) 0 var(--space-8);
  background: var(--navy);
  position: relative;
  overflow: hidden;
}

.tool-hero .container { position: relative; z-index: 1; }

.tool-hero::before {
  content: '';
  position: absolute; top: -200px; right: -150px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,201,167,0.14) 0%, transparent 65%);
  pointer-events: none;
}

.tool-hero h1 { color: #FFFFFF; }
.tool-hero p, .tool-hero .text-gray { color: rgba(255,255,255,0.65) !important; }
.tool-hero .breadcrumb { color: rgba(255,255,255,0.6); }
.tool-hero .breadcrumb a { color: var(--teal); }
.tool-hero .breadcrumb-separator { color: rgba(255,255,255,0.4); }

.tool-content {
  padding: var(--space-12) 0;
}

/* ========== TOOL INTERFACE CONTAINER ========== */
.tool-interface {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
  margin: var(--space-8) 0;
  border: 1px solid var(--color-border);
}

.tool-interface-glass {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* ========== FILE UPLOAD ZONE ========== */
.upload-zone {
  border: 3px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-12);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  background: var(--color-bg-light);
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--color-primary);
  background: rgba(37, 99, 235, 0.05);
  transform: scale(1.02);
}

.upload-icon {
  font-size: 3rem;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  display: inline-block;
}

.upload-text {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--color-text-dark);
  margin-bottom: var(--space-2);
}

.upload-hint {
  font-size: 0.875rem;
  color: var(--color-text-gray);
}

.upload-file-input {
  display: none;
}

/* File Preview */
.file-preview {
  margin-top: var(--space-6);
  padding: var(--space-4);
  background: var(--color-bg-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.file-preview-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  border-radius: var(--radius-sm);
  font-size: 1.5rem;
  color: var(--color-primary);
}

.file-preview-info {
  flex: 1;
}

.file-preview-name {
  font-weight: 500;
  color: var(--color-text-dark);
  display: block;
  margin-bottom: var(--space-1);
}

.file-preview-size {
  font-size: 0.875rem;
  color: var(--color-text-gray);
}

.file-preview-remove {
  padding: var(--space-2);
  color: #EF4444;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.file-preview-remove:hover {
  background: rgba(239, 68, 68, 0.1);
}

/* Image Preview */
.image-preview {
  margin-top: var(--space-6);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  max-width: 100%;
}

.image-preview img {
  width: 100%;
  height: auto;
  display: block;
}

/* ========== TOOL CONTROLS ========== */
.tool-controls {
  display: grid;
  gap: var(--space-6);
  margin: var(--space-6) 0;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.control-label {
  font-weight: 500;
  color: var(--color-text-dark);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.control-value {
  font-size: 0.875rem;
  color: var(--color-primary);
  font-weight: 600;
}

/* Range Slider with Value Display */
.slider-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.slider-track {
  position: relative;
  height: 8px;
  background: var(--color-border);
  border-radius: 4px;
}

.slider-fill {
  position: absolute;
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 4px;
  transition: width var(--transition-fast);
}

/* ========== OUTPUT / RESULT AREA ========== */
.tool-output {
  margin-top: var(--space-6);
  padding: var(--space-6);
  background: var(--color-bg-light);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.output-label {
  font-weight: 600;
  color: var(--color-text-dark);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.output-content {
  background: white;
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  max-height: 400px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.output-actions {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

/* ========== COMPARISON VIEW (Before/After) ========== */
.comparison-view {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  margin: var(--space-6) 0;
}

.comparison-item {
  background: var(--color-bg-light);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
}

.comparison-label {
  font-weight: 600;
  color: var(--color-text-dark);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.comparison-badge {
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 500;
}

.badge-before {
  background: rgba(100, 116, 139, 0.1);
  color: var(--color-text-gray);
}

.badge-after {
  background: rgba(16, 185, 129, 0.1);
  color: #10B981;
}

@media (max-width: 640px) {
  .comparison-view {
    grid-template-columns: 1fr;
  }
}

/* ========== COLOR PICKER INTERFACE ========== */
.color-picker-interface {
  display: grid;
  gap: var(--space-6);
}

.color-preview {
  width: 100%;
  height: 200px;
  border-radius: var(--radius-md);
  border: 2px solid var(--color-border);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.color-preview:hover {
  transform: scale(1.02);
}

.color-values {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-4);
}

.color-value-item {
  background: var(--color-bg-light);
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  text-align: center;
}

.color-value-label {
  font-size: 0.75rem;
  color: var(--color-text-gray);
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.color-value-code {
  font-family: 'Courier New', monospace;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-dark);
}

/* ========== CALCULATOR INTERFACE ========== */
.calculator-interface {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  max-width: 400px;
  margin: 0 auto;
  box-shadow: var(--shadow-xl);
}

.calculator-display {
  background: var(--color-text-dark);
  color: white;
  padding: var(--space-6);
  border-radius: var(--radius-md);
  text-align: right;
  font-size: 2rem;
  font-weight: 600;
  font-family: 'Courier New', monospace;
  margin-bottom: var(--space-4);
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  word-break: break-all;
}

.calculator-buttons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-2);
}

.calc-btn {
  padding: var(--space-4);
  font-size: 1.25rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.calc-btn:hover {
  background: var(--color-border);
  transform: scale(1.05);
}

.calc-btn-operator {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.calc-btn-operator:hover {
  background: var(--color-primary-dark);
}

.calc-btn-equals {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

.calc-btn-clear {
  background: #EF4444;
  color: white;
  border-color: #EF4444;
}

/* ========== TABS INTERFACE ========== */
.tabs-interface {
  margin: var(--space-6) 0;
}

.tabs-nav {
  display: flex;
  gap: var(--space-2);
  border-bottom: 2px solid var(--color-border);
  margin-bottom: var(--space-6);
}

.tab-btn {
  padding: var(--space-3) var(--space-6);
  background: none;
  border: none;
  font-weight: 500;
  color: var(--color-text-gray);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition-fast);
}

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

.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* ========== TEXT EDITOR INTERFACE ========== */
.text-editor {
  width: 100%;
  min-height: 300px;
  padding: var(--space-4);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: 'Courier New', monospace;
  font-size: 0.9375rem;
  resize: vertical;
  transition: border-color var(--transition-fast);
}

.text-editor:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* ========== STATS DISPLAY ========== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-4);
  margin: var(--space-6) 0;
}

.stat-card {
  background: white;
  padding: var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  text-align: center;
  transition: all var(--transition-fast);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  display: block;
  margin-bottom: var(--space-2);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-text-gray);
  font-weight: 500;
}

/* ========== RELATED TOOLS ========== */
.related-tools {
  margin-top: var(--space-12);
  padding: var(--space-8) 0;
  background: var(--color-bg-light);
  border-radius: var(--radius-lg);
}

.related-tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.related-tool-card {
  background: white;
  padding: var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  text-decoration: none;
  transition: all var(--transition-base);
  display: flex;
  align-items: start;
  gap: var(--space-3);
}

.related-tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.related-tool-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-primary);
  font-size: 1.25rem;
  flex-shrink: 0;
}

.related-tool-info {
  flex: 1;
}

.related-tool-name {
  font-weight: 600;
  color: var(--color-text-dark);
  display: block;
  margin-bottom: var(--space-1);
}

.related-tool-desc {
  font-size: 0.875rem;
  color: var(--color-text-gray);
  line-height: 1.5;
}

/* ========== SEO CONTENT SECTION ========== */
.seo-content {
  margin-top: var(--space-12);
  padding: var(--space-8);
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.seo-content h2 {
  color: var(--color-text-dark);
  margin-bottom: var(--space-4);
}

.seo-content h3 {
  color: var(--color-text-dark);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

.seo-content p {
  color: var(--color-text-gray);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}

.seo-content ul,
.seo-content ol {
  margin-left: var(--space-6);
  margin-bottom: var(--space-4);
  color: var(--color-text-gray);
}

.seo-content li {
  margin-bottom: var(--space-2);
  line-height: 1.7;
}

/* ========== USE CASES SECTION ========== */
.use-cases {
  margin-top: var(--space-8);
}

.use-case-grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.use-case-item {
  background: var(--color-bg-light);
  padding: var(--space-5);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-primary);
}

.use-case-title {
  font-weight: 600;
  color: var(--color-text-dark);
  margin-bottom: var(--space-2);
}

.use-case-desc {
  color: var(--color-text-gray);
  line-height: 1.7;
}

/* ========== FEATURES LIST ========== */
.features-list {
  margin: var(--space-6) 0;
  display: grid;
  gap: var(--space-3);
}

.feature-item {
  display: flex;
  align-items: start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-bg-light);
  border-radius: var(--radius-sm);
}

.feature-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  flex-shrink: 0;
  font-size: 0.875rem;
}

.feature-text {
  flex: 1;
  color: var(--color-text-gray);
  line-height: 1.6;
}

/* ========== COPY BUTTON ========== */
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.copy-btn:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

.copy-btn.copied {
  background: #10B981;
}

/* ========== DOWNLOAD BUTTON ========== */
.download-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
}

.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -8px rgba(37, 99, 235, 0.4);
}

.download-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* ========== PROCESSING STATE ========== */
.processing-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.95);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  border-radius: var(--radius-lg);
  z-index: 10;
}

.processing-text {
  font-weight: 500;
  color: var(--color-text-dark);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 640px) {
  .tool-interface {
    padding: var(--space-5);
  }
  
  .upload-zone {
    padding: var(--space-8);
  }
  
  .calculator-interface {
    max-width: 100%;
  }
  
  .calculator-display {
    font-size: 1.5rem;
  }
  
  .calc-btn {
    padding: var(--space-3);
    font-size: 1.125rem;
  }
}

/* ========== IMAGE RESIZER PRESET BUTTONS ========== */
.preset-btn {
  padding: var(--space-3) var(--space-2);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: white;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text-dark);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.preset-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.05);
}

/* ========== OVERFLOW SAFEGUARDS (all screen sizes) ========== */
* {
  box-sizing: border-box;
}

html {
  overflow-x: hidden;
}

body {
  overflow-x: hidden;
  max-width: 100vw;
}

.tool-page,
.tool-hero,
.tool-content,
.tool-interface {
  max-width: 100%;
  overflow-wrap: break-word;
  word-wrap: break-word;
}

.tool-interface img,
.tool-interface canvas,
.tool-interface video,
.tool-interface svg {
  max-width: 100%;
  height: auto;
}

.tool-interface input,
.tool-interface textarea,
.tool-interface select,
.text-editor {
  max-width: 100%;
  box-sizing: border-box;
}

/* Allow long strings (base64, URLs) to wrap instead of overflowing */
.text-editor,
.output-content,
#base64Output,
#base64Input,
textarea {
  word-break: break-all;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

/* Breadcrumb and headings should wrap on small screens */
.breadcrumb {
  flex-wrap: wrap;
  overflow: hidden;
}

.tool-hero h1 {
  overflow-wrap: break-word;
  word-break: break-word;
  hyphens: auto;
}

/* Ensure all containers respect viewport width */
.container,
.header-container,
.footer-container {
  max-width: 100%;
  overflow: hidden;
}

/* Prevent images from causing horizontal scroll */
img {
  max-width: 100%;
  height: auto;
}

/* ========== MOBILE RESPONSIVE (≤640px) ========== */
@media (max-width: 640px) {
  .tool-hero {
    padding: var(--space-8) 0 var(--space-6);
  }

  .tool-hero h1 {
    font-size: clamp(1.5rem, 5vw, 2rem);
  }

  .tool-content {
    padding: var(--space-8) 0;
  }

  .comparison-view {
    grid-template-columns: 1fr;
  }

  /* Stack action buttons full-width so they never overflow */
  .output-actions {
    flex-direction: column;
    gap: var(--space-3);
  }

  .output-actions .btn {
    width: 100%;
  }
  
  /* Make tool interface more compact */
  .tool-interface {
    padding: var(--space-5);
  }
  
  /* Ensure upload zone is mobile-friendly */
  .upload-zone {
    padding: var(--space-8) var(--space-4);
  }
  
  /* Make controls stack vertically */
  .tool-controls {
    gap: var(--space-4);
  }
  
  /* Responsive calculator */
  .calculator-display {
    font-size: 1.5rem;
    padding: var(--space-4);
    min-height: 60px;
  }
  
  .calc-btn {
    padding: var(--space-3);
    font-size: 1rem;
  }
  
  /* Color values grid stacks on mobile */
  .color-values {
    grid-template-columns: 1fr;
  }
  
  /* Stats grid becomes single column */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* Related tools grid */
  .related-tools-grid {
    grid-template-columns: 1fr;
  }
}

/* ========== TABLET RESPONSIVE (641px - 1024px) ========== */
@media (min-width: 641px) and (max-width: 1024px) {
  .tool-hero h1 {
    font-size: clamp(2rem, 4vw, 2.5rem);
  }
  
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .related-tools-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========== VERY SMALL SCREENS (≤380px) ========== */
@media (max-width: 380px) {
  .tool-interface {
    padding: var(--space-4);
  }

  .tool-hero h1 {
    font-size: 1.5rem;
  }
  
  .tool-hero p {
    font-size: 0.875rem;
  }
  
  .btn {
    padding: var(--space-2) var(--space-4);
    font-size: 0.875rem;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .upload-zone {
    padding: var(--space-6) var(--space-3);
  }
  
  .upload-icon {
    font-size: 2rem;
  }
  
  .container {
    padding: 0 var(--space-2);
  }
}

/* ========== LANDSCAPE MOBILE (e.g., iPhone in landscape) ========== */
@media (max-width: 896px) and (max-height: 414px) and (orientation: landscape) {
  .tool-hero {
    padding: var(--space-6) 0 var(--space-4);
  }
  
  .tool-hero h1 {
    font-size: 1.75rem;
  }
  
  .mobile-menu {
    height: 100vh;
    overflow-y: auto;
  }
}