/* ==========================================================================
   OmniTools Specialized Tool Workspace Styles
   ========================================================================== */

/* Main Tool Workspace Container */
.tool-workspace {
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  padding: 1.75rem;
  margin-bottom: 2.5rem;
}

@media (min-width: 768px) {
  .tool-workspace {
    padding: 2.5rem;
  }
}

/* Tool Header */
.tool-header-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
  flex-wrap: wrap;
}

.tool-page-title {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.65rem;
  letter-spacing: -0.03em;
}

@media (min-width: 768px) {
  .tool-page-title {
    font-size: 2.25rem;
  }
}

.tool-page-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 800px;
  margin-bottom: 2rem;
}

/* Drag & Drop File Zone */
.dropzone {
  border: 2px dashed #CBD5E1;
  border-radius: var(--radius-xl);
  background-color: var(--bg-card-subtle);
  padding: 3.5rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--brand-blue);
  background-color: var(--brand-blue-light);
  transform: scale(1.005);
}

.dropzone-icon-circle {
  width: 64px;
  height: 64px;
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem auto;
  box-shadow: var(--shadow-sm);
  color: var(--brand-blue);
}

.dropzone-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.dropzone-subtitle {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

/* File Queue / Uploaded List */
.file-queue {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.15rem;
  gap: 1rem;
  box-shadow: var(--shadow-xs);
  transition: all var(--transition-fast);
}

.file-item:hover {
  border-color: var(--border-hover);
}

.file-item-left {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  min-width: 0;
}

.file-item-thumb {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  border: 1px solid var(--border-color);
  background-color: var(--bg-hover);
}

.file-item-info {
  min-width: 0;
}

.file-item-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 260px;
}

.file-item-size {
  font-size: 0.775rem;
  color: var(--text-muted);
}

.file-item-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

/* Control Panels / Settings Bar */
.tool-controls-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 1.25rem;
  background-color: var(--bg-body);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin: 1.5rem 0;
}

.control-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.control-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

/* Sliders */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 140px;
  height: 6px;
  background: #CBD5E1;
  border-radius: var(--radius-full);
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  background: var(--brand-blue);
  cursor: pointer;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

/* Split Pane View (Markdown, Text Diff, Code Editors) */
.split-workspace {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

@media (min-width: 768px) {
  .split-workspace {
    grid-template-columns: 1fr 1fr;
  }
}

.pane-box {
  display: flex;
  flex-direction: column;
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.pane-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background-color: var(--bg-body);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.pane-body {
  padding: 1rem;
  min-height: 280px;
  max-height: 520px;
  overflow-y: auto;
}

.pane-editor {
  width: 100%;
  height: 100%;
  min-height: 260px;
  border: none;
  outline: none;
  resize: vertical;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-primary);
  background: transparent;
}

/* Markdown Rendered Output */
.markdown-preview {
  font-family: var(--font-sans);
  color: var(--text-primary);
  line-height: 1.7;
}

.markdown-preview h1,
.markdown-preview h2,
.markdown-preview h3 {
  margin-top: 1rem;
  margin-bottom: 0.5rem;
}

.markdown-preview p {
  margin-bottom: 0.85rem;
}

.markdown-preview code {
  font-family: var(--font-mono);
  background-color: var(--bg-hover);
  padding: 0.15rem 0.35rem;
  border-radius: var(--radius-sm);
  font-size: 0.85em;
  color: #BE185D;
}

.markdown-preview pre {
  background-color: #0F172A;
  color: #F8FAFC;
  padding: 1rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-bottom: 1rem;
}

.markdown-preview pre code {
  background: none;
  color: inherit;
  padding: 0;
}

.markdown-preview table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1rem;
}

.markdown-preview th,
.markdown-preview td {
  border: 1px solid var(--border-color);
  padding: 0.5rem 0.75rem;
  text-align: left;
}

.markdown-preview th {
  background-color: var(--bg-body);
}

/* Visual Diff Styling */
.diff-view {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.5;
}

.diff-line {
  display: flex;
  padding: 0.15rem 0.5rem;
}

.diff-add {
  background-color: #DCFCE7;
  color: #166534;
}

.diff-del {
  background-color: #FEE2E2;
  color: #991B1B;
}

.diff-gutter {
  width: 28px;
  color: var(--text-muted);
  user-select: none;
}

/* Stats Counter Grid (Word Counter) */
.stats-counter-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

@media (min-width: 640px) {
  .stats-counter-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.stat-counter-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  text-align: center;
}

.stat-val {
  font-size: 2rem;
  font-weight: 800;
  color: var(--brand-blue);
  line-height: 1;
  margin-bottom: 0.35rem;
}

.stat-lbl {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

/* QR Code & Color Canvas Area */
.qr-preview-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  min-height: 260px;
}

.qr-canvas-wrapper {
  padding: 1rem;
  background-color: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  display: inline-block;
}

/* Color Palette Swatches */
.palette-swatches {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.swatch-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: #FFFFFF;
  box-shadow: var(--shadow-xs);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.swatch-card:hover {
  transform: translateY(-2px);
}

.swatch-color {
  height: 90px;
  width: 100%;
}

.swatch-info {
  padding: 0.65rem 0.75rem;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

/* BMI Gauge Meter */
.bmi-gauge-container {
  max-width: 420px;
  margin: 1.5rem auto;
  text-align: center;
}

.bmi-bar {
  height: 18px;
  border-radius: var(--radius-full);
  background: linear-gradient(to right, #3B82F6 0%, #10B981 30%, #F59E0B 70%, #EF4444 100%);
  position: relative;
  margin-top: 1rem;
}

.bmi-needle {
  position: absolute;
  top: -8px;
  width: 4px;
  height: 34px;
  background-color: #0F172A;
  border-radius: 2px;
  transform: translateX(-50%);
  transition: left var(--transition-normal);
}

/* Hash & JWT Output Tables */
.output-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}

.output-table th,
.output-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.875rem;
}

.output-table th {
  background-color: var(--bg-body);
  color: var(--text-secondary);
  text-align: left;
  font-weight: 600;
}

.output-table td.code-cell {
  font-family: var(--font-mono);
  word-break: break-all;
  font-size: 0.825rem;
}

/* Single Result Box (Password Generator, UUID, etc.) */
.result-display-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-body);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  gap: 1rem;
  margin: 1.5rem 0;
}

.result-text {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  word-break: break-all;
  user-select: all;
}

/* ==========================================================================
   Mobile Optimization Responsive Rules
   ========================================================================== */
@media (max-width: 640px) {
  .tool-workspace {
    padding: 1.15rem;
  }

  .dropzone {
    padding: 2rem 1rem;
  }

  .dropzone-icon-circle {
    width: 48px;
    height: 48px;
    margin-bottom: 0.85rem;
  }

  .dropzone-title {
    font-size: 1.05rem;
  }

  .tool-controls-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 0.85rem;
    padding: 1rem;
  }

  .tool-controls-bar .control-item {
    width: 100%;
    justify-content: space-between;
  }

  .tool-controls-bar .control-item:last-child {
    margin-left: 0;
    margin-top: 0.5rem;
  }

  .tool-controls-bar .control-item:last-child .btn {
    width: 100%;
  }

  .stats-counter-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.65rem;
  }

  .stat-counter-card {
    padding: 0.85rem 0.5rem;
  }

  .stat-val {
    font-size: 1.5rem;
  }

  .result-display-box {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
    gap: 0.85rem;
    padding: 1rem;
  }

  .result-display-box .btn {
    width: 100%;
  }

  .file-item {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }

  .file-item-left {
    width: 100%;
  }

  .file-item-name {
    max-width: 100%;
  }

  .file-item-actions {
    width: 100%;
    justify-content: flex-end;
  }

  .pane-body {
    min-height: 200px;
    padding: 0.75rem;
  }

  .output-table th,
  .output-table td {
    padding: 0.5rem;
    font-size: 0.8rem;
  }
}

/* ==========================================================================
   Exam & Student Application Tools Specific Styling
   ========================================================================== */
.js-unit-btn.active,
.js-dpi-opt.active,
.js-target-quick-btn.active,
.js-doc-filter.active {
  background-color: var(--brand-blue) !important;
  color: #ffffff !important;
  border-color: var(--brand-blue) !important;
}

.js-dpi-opt {
  transition: all 0.2s ease;
  cursor: pointer;
}

.js-dpi-opt:hover {
  border-color: var(--brand-blue);
  background-color: var(--brand-blue-light);
}

.badge-rose {
  background-color: #FFE4E6;
  color: #E11D48;
}