/* ==========================================================================
   u-muu.com/tools - Dedicated Stylesheet
   Modern modular tool catalog with search, filtering, and focused modals
   ========================================================================== */

/* Tools App Layout */
.tools-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(9, 9, 11, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  transition: border-color var(--transition-normal);
}

.tools-nav {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0.875rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.back-link span {
  font-family: 'Caveat', 'Alex Brush', cursive, sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.015em;
  line-height: 1;
}

.back-link:hover {
  color: var(--text-primary);
  background-color: var(--bg-card);
  border-color: var(--border-subtle);
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
  background-color: var(--bg-card);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
}

.brand-badge .dot {
  width: 6px;
  height: 6px;
  background-color: var(--pulse-dot-bg);
  border-radius: var(--radius-full);
}

/* Tools Container */
.tools-container {
  max-width: 1040px;
  width: 100%;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 6rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Hero Section */
.tools-hero {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 0.5rem;
}

.tools-title {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.035em;
  color: var(--text-primary);
  margin-bottom: 0.625rem;
}

.tools-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Privacy Note */
.privacy-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  margin-top: 0.75rem;
}

/* ==========================================================================
   Search & Filter Section
   ========================================================================== */
.search-filter-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
}

.search-box-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}

.search-icon {
  position: absolute;
  left: 1.125rem;
  color: var(--text-tertiary);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 0.875rem 5.5rem 0.875rem 3rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--text-primary);
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  outline: none;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.search-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(113, 113, 122, 0.2);
  background-color: var(--bg-surface);
}

.search-input::placeholder {
  color: var(--text-tertiary);
}

.search-shortcut-hint {
  position: absolute;
  right: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-tertiary);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  pointer-events: none;
}

.search-clear-btn {
  position: absolute;
  right: 3.5rem;
  background: transparent;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-fast);
}

.search-clear-btn:hover {
  color: var(--text-primary);
}

.search-clear-btn.visible {
  display: flex;
}

/* Filter Chips Bar */
.filter-chips-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.85rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-chip:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
  background-color: var(--bg-card);
}

.filter-chip.active {
  color: var(--accent-invert);
  background-color: var(--accent-solid);
  border-color: var(--accent-solid);
  font-weight: 600;
}

/* Search Meta (Count indicator) */
.search-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  padding: 0 0.25rem;
}

/* ==========================================================================
   Tool Grid & Block Cards (ブロック分け)
   ========================================================================== */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 1.25rem;
  width: 100%;
}

.tool-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-decoration: none;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal), background-color var(--transition-normal);
  outline: none;
}

.tool-card:hover, .tool-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
  background-color: var(--bg-card-hover);
}

.tool-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.125rem;
}

.tool-icon-box {
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.tool-card:hover .tool-icon-box {
  transform: scale(1.05);
  border-color: var(--border-focus);
}

.tool-category-badge {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-full);
}

.tool-card-body {
  margin-bottom: 1.25rem;
}

.tool-card-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.015em;
  margin-bottom: 0.4rem;
}

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

.tool-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
  margin-top: auto;
}

.tool-action-text {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.tool-card:hover .tool-action-text {
  color: var(--text-primary);
}

.tool-arrow-icon {
  width: 18px;
  height: 18px;
  color: var(--text-tertiary);
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.tool-card:hover .tool-arrow-icon {
  transform: translateX(3px);
  color: var(--text-primary);
}

/* Empty State */
.tools-empty-state {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 1.5rem;
  background-color: var(--bg-card);
  border: 1px dashed var(--border-subtle);
  border-radius: var(--radius-lg);
  width: 100%;
}

.tools-empty-state.visible {
  display: flex;
}

.empty-state-icon {
  width: 48px;
  height: 48px;
  color: var(--text-tertiary);
  margin-bottom: 1rem;
}

.empty-state-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.empty-state-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

/* ==========================================================================
   Tool Workspace Modal
   ========================================================================== */
.tool-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.tool-modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.tool-modal-dialog {
  position: relative;
  width: 100%;
  max-width: 820px;
  max-height: 90vh;
  background-color: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.96) translateY(8px);
  transition: transform var(--transition-spring);
}

.tool-modal-overlay.open .tool-modal-dialog {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
}

.modal-header-left {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.modal-tool-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
}

.modal-title-wrap {
  display: flex;
  flex-direction: column;
}

.modal-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.modal-close-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background-color: var(--bg-subtle);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  max-height: calc(90vh - 80px);
}

/* Hide inactive panels inside modal */
.modal-body .tool-panel {
  display: none;
}

.modal-body .tool-panel.active {
  display: block;
}

/* ==========================================================================
   Tool Control UI (Form, Buttons, Stats, Sliders)
   ========================================================================== */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.form-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.form-control, .textarea-control {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-primary);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.textarea-control {
  min-height: 140px;
  resize: vertical;
  line-height: 1.5;
}

.form-control:focus, .textarea-control:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(113, 113, 122, 0.2);
}

.btn-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent-invert);
  background-color: var(--accent-solid);
  border: 1px solid var(--accent-solid);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 0.875rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-primary);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  background-color: var(--bg-subtle);
  border-color: var(--border-strong);
}

/* Stat Grid (Counter tool) */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.stat-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-weight: 500;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* QR Code Section */
.qr-preview-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.75rem;
  background-color: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  width: fit-content;
  margin: 0 auto 1.25rem;
  box-shadow: var(--shadow-sm);
}

#qrcodeBox {
  display: block;
}

/* Password Tool Controls */
.password-display-box {
  position: relative;
  display: flex;
  align-items: center;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.875rem 1rem;
  margin-bottom: 1.25rem;
}

.password-output {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  word-break: break-all;
  flex: 1;
}

.strength-bar-wrapper {
  height: 4px;
  width: 100%;
  background-color: var(--bg-subtle);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-top: 0.5rem;
}

.strength-bar {
  height: 100%;
  width: 0%;
  transition: width 0.3s ease, background-color 0.3s ease;
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
  margin: 1rem 0;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
}

.checkbox-label input {
  accent-color: var(--accent-solid);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

.slider-group {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.slider-group input[type="range"] {
  flex: 1;
  accent-color: var(--accent-solid);
}

.slider-val {
  font-family: var(--font-mono);
  font-weight: 700;
  width: 30px;
  text-align: right;
  color: var(--text-primary);
}

/* ==========================================================================
   Image Format Converter UI
   ========================================================================== */
.drop-zone {
  position: relative;
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-md);
  padding: 2.25rem 1.5rem;
  text-align: center;
  background-color: var(--bg-surface);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.drop-zone:hover, .drop-zone.dragover {
  border-color: var(--border-focus);
  background-color: var(--bg-subtle);
  transform: scale(1.005);
}

.drop-zone-icon {
  width: 44px;
  height: 44px;
  color: var(--text-tertiary);
  margin-bottom: 0.75rem;
}

.drop-zone-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.drop-zone-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-bottom: 0.875rem;
}

.format-support-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem;
}

.fmt-badge {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--text-tertiary);
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
}

/* Image Workspace (When file loaded) */
.img-workspace {
  display: none;
  flex-direction: column;
  gap: 1.5rem;
}

.img-workspace.active {
  display: flex;
}

.img-preview-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.img-preview-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.img-preview-title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.img-thumb-container {
  width: 100%;
  height: 200px;
  border-radius: var(--radius-sm);
  background-image: linear-gradient(45deg, #1f1f23 25%, transparent 25%), linear-gradient(-45deg, #1f1f23 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #1f1f23 75%), linear-gradient(-45deg, transparent 75%, #1f1f23 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
  background-color: #121215;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.img-thumb {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.img-meta-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.img-meta-item {
  background-color: var(--bg-card);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
}

.size-diff-badge {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8125rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}

.size-diff-badge.reduced {
  color: #22c55e;
  background-color: rgba(34, 197, 94, 0.12);
}

.size-diff-badge.increased {
  color: #f59e0b;
  background-color: rgba(245, 158, 11, 0.12);
}

/* Option Selectors */
.format-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

.format-pill-btn {
  padding: 0.45rem 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.format-pill-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.format-pill-btn.active {
  color: var(--accent-invert);
  background-color: var(--accent-solid);
  border-color: var(--accent-solid);
}

/* ==========================================================================
   Background Remover (Hybrid AI & Color Keying) UI
   ========================================================================== */
.mode-switch-bar {
  display: flex;
  gap: 0.5rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.35rem;
  margin-bottom: 1.25rem;
}

.mode-tab-btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.mode-tab-btn:hover {
  color: var(--text-primary);
  background-color: var(--bg-card);
}

.mode-tab-btn.active {
  color: var(--accent-invert);
  background-color: var(--accent-solid);
  box-shadow: var(--shadow-sm);
}

.mode-content-section {
  display: none;
  flex-direction: column;
  gap: 1rem;
}

.mode-content-section.active {
  display: flex;
}

/* Color Keying Controls */
.color-picker-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.color-sample-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
}

.color-dot-preview {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-sm);
}

.eyedropper-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.75rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.eyedropper-btn:hover, .eyedropper-btn.active {
  color: var(--text-primary);
  border-color: var(--border-focus);
  background-color: var(--bg-card);
}

/* Interactive Canvas for Eyedropper */
.canvas-interactive-wrapper {
  position: relative;
  width: 100%;
  height: 280px;
  border-radius: var(--radius-md);
  background-image: linear-gradient(45deg, #1f1f23 25%, transparent 25%), linear-gradient(-45deg, #1f1f23 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #1f1f23 75%), linear-gradient(-45deg, transparent 75%, #1f1f23 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
  background-color: #121215;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.canvas-interactive-wrapper canvas {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  cursor: crosshair;
}

/* AI Status Banner */
.ai-status-card {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 1rem 1.25rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.ai-status-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

.ai-progress-bar-wrap {
  width: 100%;
  height: 6px;
  background-color: var(--bg-subtle);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.ai-progress-bar {
  width: 0%;
  height: 100%;
  background-color: var(--accent-solid);
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}

.ai-progress-bar.indeterminate {
  width: 100%;
  background: linear-gradient(90deg, transparent, var(--text-primary), transparent);
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}



/* Responsive */
@media (max-width: 640px) {
  .tools-title {
    font-size: 1.75rem;
  }
  .tools-grid {
    grid-template-columns: 1fr;
  }
  .stat-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .search-shortcut-hint {
    display: none;
  }
  .search-input {
    padding-right: 3rem;
  }
  .btn-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .btn-toolbar button {
    justify-content: center;
  }
  .tool-modal-dialog {
    max-height: 95vh;
  }
  .modal-body {
    padding: 1.125rem;
  }
}