/* ============================================================
   GENERATOR-WORKBENCH.CSS – makeCSS.com
   Shared two-column generator workbench shell
   ============================================================ */

.app-layout {
  display: grid;
  grid-template-columns: 440px 1fr;
  gap: var(--space-lg);
  align-items: start;
}

.app-layout > :first-child {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.left-panel {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06), 0 0 0 1px rgba(0, 0, 0, 0.02);
}

.tab-nav {
  display: flex;
  border-bottom: 2px solid var(--color-border);
  background-color: var(--color-surface-2);
  flex-shrink: 0;
}

.tab-nav__btn {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  background: none;
  border: none;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-muted);
  cursor: pointer;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  transition: color 0.2s, background-color 0.15s;
  white-space: nowrap;
}

.tab-nav__btn:hover {
  color: var(--color-text);
  background-color: var(--color-surface);
}

.tab-nav__btn::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: transparent;
  transition: background-color 0.2s;
}

.tab-nav__btn--active {
  color: var(--color-primary);
  background-color: var(--color-surface);
}

.tab-nav__btn--active::after {
  background-color: var(--color-primary);
}

.tab-nav__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  background-color: var(--color-primary);
  color: #fff;
  font-size: 0.6875rem;
  font-weight: var(--weight-bold);
  border-radius: 10px;
  line-height: 1;
}

.tab-nav__btn:not(.tab-nav__btn--active) .tab-nav__badge {
  background-color: var(--color-text-muted);
  opacity: 0.5;
}

.tab-content {
  flex: 1;
  overflow: hidden;
  min-height: 0;
}

.tab-panel {
  display: none;
  height: 100%;
  overflow-y: auto;
}

.tab-panel--active {
  display: flex;
  flex-direction: column;
}

.editor-tab {
  padding: var(--space-md);
  gap: var(--space-sm);
}

.presets-tab {
  flex-direction: column;
  height: 100%;
}

.presets-tab__header {
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
  position: sticky;
  top: 0;
  background-color: var(--color-surface);
  z-index: 2;
}

.presets-search {
  position: relative;
  margin-bottom: var(--space-sm);
}

.presets-search__icon {
  position: absolute;
  left: var(--space-sm);
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--color-text-muted);
  pointer-events: none;
}

.presets-search__input {
  width: 100%;
  padding: var(--space-xs) var(--space-sm) var(--space-xs) 36px;
  font-size: var(--text-sm);
  font-family: var(--font-sans);
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: border-color 0.15s;
}

.presets-search__input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.presets-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.presets-filter-select-wrap {
  display: grid;
  gap: 6px;
  width: min(100%, 240px);
}

.presets-filter-select-wrap__label {
  font-size: 0.6875rem;
  font-weight: var(--weight-bold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.presets-filter-select {
  min-width: 0;
  background-color: var(--color-surface-2);
}

.preset-library-note {
  margin-top: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  line-height: 1.6;
}

.preset-library-note__row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.preset-library-note__title {
  display: block;
  margin-bottom: 4px;
  color: var(--color-text);
  font-size: var(--text-xs);
}

.preset-library-note__text {
  margin: 0;
}

.preset-library-note__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  flex-shrink: 0;
}

.presets-tab__body {
  padding: var(--space-md);
  overflow-y: auto;
  flex: 1;
}

.presets-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.preset-card {
  background-color: var(--color-surface-2);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
  padding: 0;
  text-align: left;
  font-family: var(--font-sans);
  overflow: hidden;
}

.preset-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

.preset-card--active {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(67, 97, 238, 0.15);
  position: relative;
}

.preset-card--active::after {
  content: '✓';
  position: absolute;
  top: 6px;
  right: 6px;
  width: 20px;
  height: 20px;
  background-color: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.625rem;
  font-weight: var(--weight-bold);
}

.preset-card__preview {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg);
}

.preset-card__preview-box {
  width: 44px;
  height: 44px;
  background-color: var(--color-surface);
  border-radius: var(--radius-sm);
}

.preset-card__body {
  padding: var(--space-xs) var(--space-sm);
}

.preset-card__name {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  margin-bottom: 1px;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.preset-card__category {
  font-size: 0.625rem;
  color: var(--color-text-muted);
  text-transform: capitalize;
}

.preset-category-section {
  display: grid;
  gap: 14px;
  padding: 18px;
  border: 1px solid rgba(226, 232, 240, 0.95);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.94));
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.04);
}

.presets-grid--grouped {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.presets-grid--grouped .preset-category-section {
  width: 100%;
}

.preset-category-section__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
}

.preset-category-section__title {
  margin: 0;
  font-size: 1rem;
  font-weight: var(--weight-bold);
  color: var(--color-text);
}

.preset-category-section__text {
  margin: 4px 0 0;
  font-size: var(--text-xs);
  line-height: 1.5;
  color: var(--color-text-muted);
}

.preset-category-section__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
}

.presets-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
}

.presets-pagination__info {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-inline: var(--space-sm);
}

.code-output {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06), 0 0 0 1px rgba(0, 0, 0, 0.02);
}

.code-output__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xs) var(--space-md);
  background-color: var(--color-surface-2);
  border-bottom: 1px solid var(--color-border);
}

.code-output__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.code-output__label {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.code-output__body {
  padding: var(--space-md) var(--space-lg);
  overflow-x: auto;
}

.code-output__body pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-base);
  line-height: 1.8;
  white-space: pre-wrap;
  word-break: break-all;
}

.css-prop {
  color: var(--color-primary);
  font-weight: var(--weight-semibold);
}

.css-punct {
  color: var(--color-text-muted);
}

.css-val {
  color: var(--color-accent);
}

.right-panel {
  position: sticky;
  top: calc(var(--header-height) + var(--space-md));
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.layout-playground-page .app-layout {
  grid-template-columns: minmax(360px, 420px) minmax(0, 1fr);
  align-items: start;
}

.layout-playground-page .left-panel {
  background: transparent;
  border: 0;
  border-radius: 0;
  overflow: visible;
}

.layout-playground-page .right-panel {
  position: static;
  top: auto;
}

@media (max-width: 768px) {
  .preset-library-note__row {
    flex-direction: column;
  }

  .preset-category-section {
    padding: 14px;
  }

  .preset-category-section__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
  }
}

@media (max-width: 520px) {
  .preset-category-section__grid {
    grid-template-columns: 1fr;
  }
}

.layout-playground-page .gen-editor-ad {
  max-width: none;
}

.gen-editor-ad {
  width: 100%;
  max-width: 440px;
  min-height: 250px;
  margin-top: 0;
  margin-inline: 0;
  margin-bottom: 0;
}

.gen-editor-ad .ad-placeholder-dev,
.gen-bottom-ad .ad-placeholder-dev {
  border-radius: var(--radius-lg);
}

.preview-area {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06), 0 0 0 1px rgba(0, 0, 0, 0.02);
}

.preview-area__toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-surface-2);
  flex-wrap: wrap;
}

.preview-area__toolbar-group {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.preview-area__toolbar-group--size {
  margin-left: auto;
}

.preview-area__toolbar-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: var(--weight-medium);
}

.preview-area__toolbar-color {
  width: 28px;
  height: 28px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0;
  background: none;
}

.preview-area__size-slider {
  width: 120px;
}

.preview-area__size-value {
  min-width: 76px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text);
  font-weight: var(--weight-semibold);
}

.preview-area__canvas {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 420px;
  padding: var(--space-2xl);
  transition: background-color 0.2s;
}

.preview-area__canvas--transparent {
  background-image:
    linear-gradient(45deg, #e0e0e0 25%, transparent 25%),
    linear-gradient(-45deg, #e0e0e0 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #e0e0e0 75%),
    linear-gradient(-45deg, transparent 75%, #e0e0e0 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0;
  background-color: #fff;
}

.bg-presets {
  display: flex;
  gap: 4px;
  align-items: center;
}

.bg-preset {
  width: 22px;
  height: 22px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--color-border);
  cursor: pointer;
  padding: 0;
  transition: border-color 0.15s, transform 0.1s;
}

.bg-preset:hover {
  transform: scale(1.08);
}

.bg-preset--active {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(67, 97, 238, 0.16);
}

.bg-preset--transparent {
  background-image:
    linear-gradient(45deg, #ccc 25%, transparent 25%),
    linear-gradient(-45deg, #ccc 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #ccc 75%),
    linear-gradient(-45deg, transparent 75%, #ccc 75%);
  background-size: 8px 8px;
  background-position: 0 0, 0 4px, 4px -4px, -4px 0;
  background-color: #fff;
}

.preview-box {
  position: relative;
  width: 180px;
  height: 180px;
  border-radius: var(--radius-lg);
  transition: box-shadow 0.15s, background-color 0.2s;
}

.preview-box::before {
  content: '';
  position: absolute;
  inset: -10px;
  border: 1px dashed rgba(125, 211, 252, 0.4);
  border-radius: calc(var(--radius-lg) + 6px);
  opacity: 0;
  transform: scale(0.985);
  transition: opacity 0.16s ease, transform 0.16s ease;
  pointer-events: none;
}

.preview-area__canvas:hover .preview-box::before,
.preview-box:hover::before,
body.preview-resizing .preview-box::before {
  opacity: 1;
  transform: scale(1);
}

.preview-box__handle {
  position: absolute;
  background: transparent;
  border: 0;
  box-shadow: none;
  opacity: 1;
  z-index: 6;
}

.preview-box__handle::before {
  content: '';
  position: absolute;
  border-radius: 999px;
  background: rgba(125, 211, 252, 0.3);
  box-shadow: 0 0 0 1px rgba(125, 211, 252, 0.2), 0 10px 24px rgba(14, 116, 144, 0.2);
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.16s ease, transform 0.16s ease, background-color 0.16s ease, box-shadow 0.16s ease;
  pointer-events: none;
}

.preview-area__canvas:hover .preview-box__handle::before,
.preview-box:hover .preview-box__handle::before,
.preview-box__handle:hover::before,
body.preview-resizing .preview-box__handle::before {
  opacity: 0.92;
  transform: scale(1);
}

.preview-area__canvas:hover .preview-box {
  box-shadow: 0 0 0 1px rgba(67, 97, 238, 0.14);
}

.preview-box__handle--north {
  top: -16px;
  left: 0;
  width: 100%;
  height: 32px;
  cursor: ns-resize;
}

.preview-box__handle--north::before {
  top: 10px;
  left: 50%;
  width: 58px;
  height: 4px;
  transform: translateX(-50%);
}

.preview-box__handle--west {
  top: 0;
  left: -16px;
  width: 32px;
  height: 100%;
  cursor: ew-resize;
}

.preview-box__handle--west::before {
  top: 50%;
  left: 10px;
  width: 4px;
  height: 58px;
  transform: translateY(-50%);
}

.preview-box__handle--northwest {
  top: -18px;
  left: -18px;
  width: 36px;
  height: 36px;
  cursor: nwse-resize;
}

.preview-box__handle--northwest::before {
  top: 10px;
  left: 10px;
  width: 14px;
  height: 14px;
  border-radius: 4px;
}

.preview-box__handle--east {
  top: 0;
  right: -16px;
  width: 32px;
  height: 100%;
  cursor: ew-resize;
}

.preview-box__handle--east::before {
  top: 50%;
  right: 10px;
  width: 4px;
  height: 58px;
  transform: translateY(-50%);
}

.preview-box__handle--south {
  left: 0;
  bottom: -16px;
  width: 100%;
  height: 32px;
  cursor: ns-resize;
}

.preview-box__handle--south::before {
  bottom: 10px;
  left: 50%;
  width: 58px;
  height: 4px;
  transform: translateX(-50%);
}

.preview-box__handle--southeast {
  right: -18px;
  bottom: -18px;
  width: 36px;
  height: 36px;
  cursor: nwse-resize;
}

.preview-box__handle--southeast::before {
  right: 10px;
  bottom: 10px;
  width: 14px;
  height: 14px;
  border-radius: 4px;
}

.preview-box__handle:hover::before {
  background: rgba(125, 211, 252, 0.42);
  box-shadow: 0 0 0 1px rgba(125, 211, 252, 0.24), 0 10px 22px rgba(14, 116, 144, 0.24);
}

body.preview-resizing {
  user-select: none;
}

.gen-bottom-ad {
  width: min(100%, 980px);
  max-width: 980px;
  min-height: 90px;
  margin-top: var(--space-xl);
  margin-bottom: 0;
  margin-inline: auto;
}

@media (max-width: 1024px) {
  .app-layout {
    grid-template-columns: 1fr;
  }

  .left-panel {
    max-height: none;
  }

  .right-panel {
    position: static;
  }

  .layout-playground-page .app-layout > :first-child {
    order: 2;
  }

  .layout-playground-page .right-panel {
    order: 1;
  }
}

@media (max-width: 768px) {
  .preview-area__canvas {
    min-height: 300px;
    padding: var(--space-xl);
  }

  .preview-area__toolbar-group--size {
    margin-left: 0;
    width: 100%;
  }

  .preview-area__size-slider {
    flex: 1;
    width: auto;
  }

  .preview-box {
    width: 140px;
    height: 140px;
  }

  .preview-box__handle--east {
    right: -18px;
    width: 36px;
  }

  .preview-box__handle--north {
    top: -18px;
    height: 36px;
  }

  .preview-box__handle--west {
    left: -18px;
    width: 36px;
  }

  .preview-box__handle--northwest {
    top: -20px;
    left: -20px;
    width: 40px;
    height: 40px;
  }

  .preview-box__handle--south {
    bottom: -18px;
    height: 36px;
  }

  .preview-box__handle--southeast {
    right: -20px;
    bottom: -20px;
    width: 40px;
    height: 40px;
  }

  .gen-editor-ad,
  .gen-bottom-ad {
    max-width: 100%;
  }

  .presets-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .presets-grid {
    grid-template-columns: 1fr;
  }

  .tab-nav__btn {
    font-size: var(--text-xs);
    padding: var(--space-xs) var(--space-sm);
  }
}