/* ==========================================================================
   Flexbox Interactive Playground
   Controls panel + live preview + generated code output
   ========================================================================== */

/* ==========================================================================
   Main Container
   ========================================================================== */

.flexbox-playground {
  margin: 24px 0;
  border-radius: 12px;
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
  overflow: hidden;
  background: var(--bg-card, #22223b);
  transition: var(--transition-colors, background-color 0.3s ease);
}

.flexbox-playground-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--bg-secondary, #282c34);
  border-bottom: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
}

.flexbox-playground-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary, #a0aec0);
}

.flexbox-playground-badge {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--accent-muted, rgba(97, 218, 251, 0.15));
  color: var(--accent, #61dafb);
}

/* ==========================================================================
   Content: Controls + Preview Grid
   ========================================================================== */

.flexbox-playground-content {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 400px;
}

/* ==========================================================================
   Controls Panel
   ========================================================================== */

.flexbox-controls {
  padding: 16px;
  border-right: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
  overflow-y: auto;
  background: var(--bg-secondary, #282c34);
}

.flexbox-controls-section {
  margin-bottom: 16px;
}

.flexbox-controls-section-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted, #718096);
  margin-bottom: 8px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
}

.flexbox-controls label {
  display: block;
  margin-bottom: 4px;
  font-size: 12px;
  color: var(--text-muted, #718096);
  font-weight: 500;
}

.flexbox-controls select {
  width: 100%;
  padding: 6px 8px;
  margin-bottom: 12px;
  border-radius: 4px;
  background: var(--bg-primary, #1a1a2e);
  color: var(--text-primary, #e0e0e0);
  border: 1px solid var(--border-color-strong, rgba(255, 255, 255, 0.2));
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s ease;
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23718096' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  padding-right: 28px;
}

.flexbox-controls select:hover {
  border-color: var(--accent, #61dafb);
}

.flexbox-controls select:focus {
  border-color: var(--accent, #61dafb);
  box-shadow: 0 0 0 2px var(--accent-muted, rgba(97, 218, 251, 0.15));
}

.flexbox-controls input[type="number"] {
  width: 100%;
  padding: 6px 8px;
  margin-bottom: 12px;
  border-radius: 4px;
  background: var(--bg-primary, #1a1a2e);
  color: var(--text-primary, #e0e0e0);
  border: 1px solid var(--border-color-strong, rgba(255, 255, 255, 0.2));
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s ease;
}

.flexbox-controls input[type="number"]:focus {
  border-color: var(--accent, #61dafb);
  box-shadow: 0 0 0 2px var(--accent-muted, rgba(97, 218, 251, 0.15));
}

/* Add/remove child buttons */
.flexbox-child-controls {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}

.flexbox-child-btn {
  flex: 1;
  padding: 6px;
  border-radius: 4px;
  border: 1px solid var(--border-color-strong, rgba(255, 255, 255, 0.2));
  background: transparent;
  color: var(--text-secondary, #a0aec0);
  font-size: 12px;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.flexbox-child-btn:hover {
  border-color: var(--accent, #61dafb);
  background: var(--accent-muted, rgba(97, 218, 251, 0.15));
}

/* ==========================================================================
   Preview Area
   ========================================================================== */

.flexbox-preview-area {
  padding: 16px;
  display: flex;
  flex-direction: column;
}

.flexbox-preview-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted, #718096);
  margin-bottom: 8px;
}

.flexbox-preview {
  flex: 1;
  border: 2px dashed var(--text-muted, #718096);
  border-radius: 8px;
  padding: 8px;
  min-height: 200px;
  position: relative;
  transition: border-color 0.2s ease;
  /* Default flex properties — JS will override via inline styles */
  display: flex;
}

.flexbox-preview:hover {
  border-color: var(--accent, #61dafb);
}

/* ==========================================================================
   Flex Children
   ========================================================================== */

.flexbox-child {
  min-width: 40px;
  min-height: 40px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: #ffffff;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  flex-shrink: 0;
}

.flexbox-child:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0, 0, 0, 0.3));
}

/* Child color palette */
.flexbox-child:nth-child(1) {
  background-color: #e94560;
}

.flexbox-child:nth-child(2) {
  background-color: #61dafb;
}

.flexbox-child:nth-child(3) {
  background-color: #4ecdc4;
}

.flexbox-child:nth-child(4) {
  background-color: #f5a623;
}

.flexbox-child:nth-child(5) {
  background-color: #a855f7;
}

/* Cycle colors for additional children */
.flexbox-child:nth-child(6) {
  background-color: #e94560;
}

.flexbox-child:nth-child(7) {
  background-color: #61dafb;
}

.flexbox-child:nth-child(8) {
  background-color: #4ecdc4;
}

.flexbox-child:nth-child(9) {
  background-color: #f5a623;
}

.flexbox-child:nth-child(10) {
  background-color: #a855f7;
}

/* Child size variants */
.flexbox-child.size-sm {
  min-width: 30px;
  min-height: 30px;
  font-size: 10px;
}

.flexbox-child.size-md {
  min-width: 50px;
  min-height: 50px;
}

.flexbox-child.size-lg {
  min-width: 70px;
  min-height: 70px;
}

/* ==========================================================================
   Generated Code Output
   ========================================================================== */

.flexbox-code-output {
  margin-top: 12px;
  padding: 12px;
  font-family: var(--font-mono, 'SFMono-Regular', Consolas, monospace);
  font-size: 12px;
  line-height: 1.6;
  border-radius: 8px;
  background: var(--bg-code, #1e1e2e);
  color: var(--text-primary, #e0e0e0);
  white-space: pre;
  overflow-x: auto;
  position: relative;
}

.flexbox-code-output-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.flexbox-code-output-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted, #718096);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.flexbox-code-copy-btn {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 3px;
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
  background: transparent;
  color: var(--text-muted, #718096);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.flexbox-code-copy-btn:hover {
  color: var(--accent, #61dafb);
  border-color: var(--accent, #61dafb);
}

/* ==========================================================================
   Android/RN Note
   ========================================================================== */

.flexbox-android-note {
  padding: 8px 12px;
  border-top: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
  font-size: 12px;
  font-style: italic;
  color: var(--text-muted, #718096);
  line-height: 1.5;
}

.flexbox-android-note code {
  font-family: var(--font-mono, monospace);
  font-size: 11px;
  background: var(--bg-code, #1e1e2e);
  padding: 1px 4px;
  border-radius: 3px;
  font-style: normal;
}

/* ==========================================================================
   Mobile Responsive — Single Column
   ========================================================================== */

@media (max-width: 768px) {
  .flexbox-playground-content {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .flexbox-controls {
    border-right: none;
    border-bottom: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
    padding: 12px;
    max-height: 250px;
    overflow-y: auto;
  }

  /* Two-column controls layout on mobile to save space */
  .flexbox-controls-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 12px;
    margin-bottom: 12px;
  }

  .flexbox-controls-section-title {
    grid-column: 1 / -1;
  }

  .flexbox-preview-area {
    padding: 12px;
  }

  .flexbox-preview {
    min-height: 150px;
  }

  .flexbox-code-output {
    padding: 10px;
    font-size: 11px;
  }

  .flexbox-child {
    min-width: 32px;
    min-height: 32px;
    font-size: 10px;
  }
}