/* Playground DSL Editor Stylesheet */

/* ── Header ── */
.pg-header {
  height: 52px;
  background: var(--color-app-bg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 var(--pg-space-5);
  flex-shrink: 0;
  z-index: 10;
}

/* Brand */
.pg-brand {
  display: flex;
  align-items: center;
  gap: var(--pg-space-2);
  text-decoration: none;
  flex-shrink: 0;
  margin-right: var(--pg-space-4);
}

.pg-brand-name {
  font-size: var(--pg-text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
}

.pg-brand-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--pg-text-xs);
  font-weight: 500;
  color: var(--color-accent);
  background: var(--color-accent-bg);
  border: 1px solid rgba(217, 122, 56, 0.25);
  border-radius: 3px;
  padding: var(--pg-space-1) var(--pg-space-2);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* Divider */
.pg-divider {
  width: 1px;
  height: 18px;
  background: var(--color-border);
  flex-shrink: 0;
  margin: 0 var(--pg-space-4);
}

/* Nav */
.pg-nav {
  display: flex;
  align-items: center;
  gap: var(--pg-space-1);
  flex: 1;
  min-width: 0;
}

.pg-nav-link {
  font-size: var(--pg-text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 5px 10px;
  border-radius: 4px;
  transition: background var(--pg-transition-fast), color var(--pg-transition-fast);
  white-space: nowrap;
  background: none;
  border: none;
  cursor: pointer;
  font-family: 'DM Sans', sans-serif;
}

.pg-nav-link:hover {
  background: var(--color-surface-raised);
  color: var(--color-text-primary);
}

/* Primary CTA — Preview */
.pg-nav-cta {
  font-size: var(--pg-text-sm);
  font-weight: 500;
  color: var(--color-accent);
  background: var(--color-accent-bg);
  border: 1px solid rgba(217, 122, 56, 0.25);
  border-radius: 4px;
  padding: 5px 12px;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--pg-transition-fast), color var(--pg-transition-fast), border-color var(--pg-transition-fast), transform 0.15s cubic-bezier(0.25, 1, 0.5, 1), box-shadow 0.15s;
  white-space: nowrap;
  font-family: 'DM Sans', sans-serif;
}

.pg-nav-cta:hover {
  background: rgba(217, 122, 56, 0.14);
  color: var(--color-accent-light);
  border-color: rgba(217, 122, 56, 0.4);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(217, 122, 56, 0.18);
}

.pg-nav-cta:active {
  transform: translateY(0);
  box-shadow: none;
  transition-duration: 0.05s;
}

/* Examples select */
.pg-examples-select {
  font-size: var(--pg-text-sm);
  color: var(--color-text-muted);
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 4px 8px;
  cursor: pointer;
  outline: none;
  transition: border-color var(--pg-transition-fast), color var(--pg-transition-fast);
  font-family: 'DM Sans', sans-serif;
}

.pg-examples-select:hover {
  border-color: #2d3748;
  color: var(--color-text-primary);
}

/* Right header section */
.pg-header-right {
  display: flex;
  align-items: center;
  gap: var(--pg-space-2);
  flex-shrink: 0;
}

.pg-link-muted {
  font-size: 0.8rem;
  color: #4a5568;
  text-decoration: none;
  padding: 4px 8px;
  border-radius: 4px;
  transition: color var(--pg-transition-fast), background var(--pg-transition-fast);
}

.pg-link-muted:hover {
  color: var(--color-text-muted);
  background: var(--color-surface-raised);
}

.pg-about-btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.675rem;
  color: #5a6e84;
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 3px 7px;
  text-decoration: none;
  transition: color var(--pg-transition-fast), border-color var(--pg-transition-fast);
  line-height: 1;
}

.pg-about-btn:hover {
  color: var(--color-text-muted);
  border-color: #2d3748;
}

.pg-main {
  flex: 1;
  min-height: 0;
  display: flex;
}

/* ── Editor Panel ── */
.ide-shell {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.ide-split {
  flex: 1;
  min-height: 0;
  display: flex;
  overflow: hidden;
}

.ide-editor-panel {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: var(--color-editor-bg);
  border-right: 1px solid var(--color-border);
  overflow: hidden;
}

.ide-panel-bar {
  height: 36px;
  display: flex;
  align-items: center;
  padding: 0 var(--pg-space-3);
  gap: var(--pg-space-2);
  background: var(--color-surface-raised);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.ide-validator-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--pg-text-xs);
  color: #4a5568;
  letter-spacing: 0.04em;
  flex-shrink: 0;
  user-select: none;
}

.ide-validator-select {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--pg-text-xs);
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  border-radius: 3px;
  padding: var(--pg-space-1) var(--pg-space-2);
  cursor: pointer;
  outline: none;
  transition: border-color var(--pg-transition-fast), color var(--pg-transition-fast);
}

.ide-validator-select:hover {
  border-color: #2d3748;
  color: var(--color-text-primary);
}

.ide-validator-select option {
  background: var(--color-surface-raised);
  color: var(--color-text-primary);
}

.ide-autosave {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--pg-text-xs);
  color: #4a5568;
  margin-left: auto;
  transition: color 0.25s ease-out;
}

.ide-autosave.is-saved {
  color: #86efac;
}

.ide-editor-body {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

/* ── Diagram Panel ── */
.ide-diagram-panel {
  width: 42%;
  min-width: 320px;
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  overflow: hidden;
}

.ide-tab-bar {
  height: 36px;
  display: flex;
  align-items: center;
  padding: 0 var(--pg-space-3);
  gap: var(--pg-space-2);
  background: var(--color-surface-raised);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

/* Tab buttons — Flow / Guide */
.ide-tab-btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.725rem;
  color: #4a5568;
  background: none;
  border: none;
  border-bottom: 1px solid transparent;
  padding: 0 0 2px;
  cursor: pointer;
  transition: color var(--pg-transition-fast), border-color var(--pg-transition-fast), transform 0.08s;
  line-height: 1;
}

.ide-tab-btn:hover {
  color: var(--color-text-muted);
}

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

@media (prefers-reduced-motion: no-preference) {
  .ide-tab-btn:active {
    transform: translateY(1px);
  }
}

.ide-popout-btn {
  margin-left: auto;
  font-size: 0.7rem;
  color: #5a6e84;
  background: none;
  border: none;
  cursor: pointer;
  padding: 3px 7px;
  border-radius: 3px;
  font-family: 'JetBrains Mono', monospace;
  transition: color var(--pg-transition-fast), background var(--pg-transition-fast);
}

.ide-popout-btn:hover {
  color: var(--color-text-muted);
  background: var(--color-border);
}

/* Panel container — both tab panels sit inside here, absolutely positioned */
.ide-panel-container {
  flex: 1;
  min-height: 0;
  position: relative;
}

/* Both panels fill the container exactly */
.ide-diagram-body,
.ide-guide-body {
  position: absolute;
  inset: 0;
  overflow: auto;
  display: none;
}

/* Flow panel */
.ide-diagram-body {
  align-items: flex-start;
  justify-content: center;
  padding: var(--pg-space-4);
  font-size: var(--pg-text-base);
  color: #4a5568;
  font-family: 'JetBrains Mono', monospace;
}

.ide-diagram-body.ide-panel-active {
  display: flex;
}

.ide-diagram-body svg {
  max-width: 100%;
  height: auto;
  animation: diagramReveal 0.35s cubic-bezier(0.25, 1, 0.5, 1);
}

@media (prefers-reduced-motion: reduce) {
  .ide-diagram-body svg {
    animation: none;
  }
}

/* Guide panel */
.ide-guide-body {
  padding: var(--pg-space-5) var(--pg-space-3) var(--pg-space-6);
  font-family: 'DM Sans', sans-serif;
  font-size: var(--pg-text-base);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.ide-guide-body.ide-panel-active {
  display: block;
}

.ide-guide-intro {
  color: #c5cdd8;
  font-size: var(--pg-text-md);
  line-height: 1.65;
  margin: 0 0 var(--pg-space-5);
  padding-bottom: var(--pg-space-4);
  border-bottom: 1px solid var(--color-border);
}

.ide-guide-intro strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

.ide-guide-section {
  margin-bottom: var(--pg-space-5);
  padding-bottom: var(--pg-space-4);
  border-bottom: 1px solid var(--color-border);
  transition: border-color 0.2s;
}

.ide-guide-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.ide-guide-section:hover {
  border-color: rgba(217, 122, 56, 0.2);
}

.ide-guide-heading {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--pg-text-xs);
  font-weight: 500;
  color: #4a5568;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 var(--pg-space-2);
}

.ide-guide-code {
  background: var(--color-app-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: var(--pg-space-2) var(--pg-space-3);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  overflow-x: auto;
  margin: 0;
  white-space: pre;
}

.ide-guide-code .kw  { color: #c792ea; }
.ide-guide-code .qt  { color: #79b8ff; }
.ide-guide-code .kv  { color: #7fdbca; }
.ide-guide-code .at  { color: #c3e88d; }
.ide-guide-code .str { color: #a8d8a8; }
.ide-guide-code .cm  { color: #5a6e84; font-style: italic; }

.ide-guide-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--pg-space-1) var(--pg-space-4);
  margin: 0;
  padding: 0;
  list-style: none;
}

.ide-guide-grid li {
  font-size: 0.775rem;
  color: #6b7a8f;
  display: flex;
  gap: var(--pg-space-2);
  align-items: baseline;
}

.ide-guide-grid li code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: #79b8ff;
  flex-shrink: 0;
}

.ide-guide-grid .desc {
  color: #4a5568;
  font-size: 0.725rem;
}

.ide-guide-attr-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.2rem var(--pg-space-3);
  align-items: baseline;
}

.ide-guide-attr-grid code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: #c3e88d;
}

.ide-guide-attr-grid span {
  font-size: 0.75rem;
  color: #4a5568;
}

.ide-guide-link {
  display: inline-flex;
  align-items: center;
  gap: var(--pg-space-1);
  color: var(--color-accent);
  text-decoration: none;
  font-size: var(--pg-text-base);
  font-weight: 500;
  transition: color var(--pg-transition-fast), gap 0.15s cubic-bezier(0.25, 1, 0.5, 1);
}

.ide-guide-link:hover {
  color: var(--color-accent-light);
  gap: var(--pg-space-2);
}

/* ── Status Bar ── */
.ide-statusbar {
  height: 28px;
  background: var(--color-app-bg);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 var(--pg-space-3);
  gap: var(--pg-space-4);
  flex-shrink: 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--pg-text-xs);
  color: #4a5568;
}

.ide-statusbar-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--pg-space-3);
}

/* Share section */
.ide-share-section {
  display: flex;
  align-items: center;
  gap: var(--pg-space-2);
}

.ide-share-url {
  background: transparent;
  border: none;
  color: #4a5568;
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--pg-text-xs);
  width: 18rem;
  outline: none;
  cursor: text;
  transition: color var(--pg-transition-fast);
}

.ide-share-url:focus {
  color: var(--color-text-muted);
}

.ide-copy-btn {
  color: var(--color-accent);
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--pg-text-xs);
  font-family: 'JetBrains Mono', monospace;
  padding: 0;
  transition: color 0.15s ease-out;
  white-space: nowrap;
}

.ide-copy-btn:hover {
  color: var(--color-accent-light);
}

.ide-copy-btn.is-copied {
  color: #86efac !important;
}

.ide-expire-note {
  color: #4a5568;
  white-space: nowrap;
}

/* Validation states in status bar */
.ide-statusbar .validation-ok {
  color: #86efac;
}

.ide-statusbar .validation-warn {
  color: #fde68a;
}

.ide-statusbar .validation-err {
  color: #fca5a5;
}

/* Clickable validation badge */
.ide-badge-btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--pg-text-xs);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  text-decoration: underline dotted;
  text-underline-offset: 2px;
  transition: opacity var(--pg-transition-fast);
}

.ide-badge-btn:hover {
  opacity: 0.75;
}

/* ── DSL Errors & Warnings ── */
.dsl-errors {
  width: 100%;
  padding: var(--pg-space-1);
  font-family: 'JetBrains Mono', monospace;
}

.dsl-errors-header {
  color: #fca5a5;
  font-size: 0.75rem;
  font-weight: 600;
  margin: 0 0 var(--pg-space-2);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.dsl-warnings-header {
  color: #fde68a;
  font-size: 0.75rem;
  font-weight: 600;
  margin: 0 0 var(--pg-space-2);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.dsl-issues-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--pg-space-2);
}

.dsl-issue {
  font-size: 0.75rem;
  padding: 0.4rem var(--pg-space-2);
  border-radius: 0 3px 3px 0;
  line-height: 1.55;
  word-break: break-word;
}

.dsl-issue-error {
  color: #fca5a5;
  background: rgba(252, 165, 165, 0.07);
  border-left: 2px solid #f87171;
}

.dsl-issue-warn {
  color: #fde68a;
  background: rgba(253, 230, 138, 0.07);
  border-left: 2px solid #fbbf24;
}

.dsl-dismiss-btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: #4a5568;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0 0 var(--pg-space-2);
  display: block;
  transition: color var(--pg-transition-fast);
}

.dsl-dismiss-btn:hover {
  color: var(--color-text-muted);
}

/* ── Validation Animation ── */
@keyframes validSlideIn {
  from {
    opacity: 0;
    transform: translateX(-6px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .validation-ok.delight-in {
    animation: validSlideIn 0.25s cubic-bezier(0.25, 1, 0.5, 1) forwards;
  }
}

/* ── AI Generate Panel ── */
.ide-ai-btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--color-accent);
  background: none;
  border: 1px solid rgba(217, 122, 56, 0.3);
  border-radius: 3px;
  padding: 2px 8px;
  cursor: pointer;
  transition: color var(--pg-transition-fast), border-color var(--pg-transition-fast), background var(--pg-transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
}

.ide-ai-btn:hover {
  color: var(--color-accent-light);
  border-color: rgba(217, 122, 56, 0.6);
  background: rgba(217, 122, 56, 0.08);
}

.ide-ai-panel {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--pg-space-2) var(--pg-space-3);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: var(--pg-space-2);
}

.ide-ai-input {
  font-family: 'DM Sans', sans-serif;
  font-size: var(--pg-text-base);
  color: #c5cdd8;
  background: var(--color-editor-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: var(--pg-space-2) var(--pg-space-3);
  resize: none;
  outline: none;
  line-height: 1.5;
  transition: border-color var(--pg-transition-fast);
  width: 100%;
  box-sizing: border-box;
}

.ide-ai-input::placeholder {
  color: #4a5568;
}

.ide-ai-input:focus {
  border-color: rgba(217, 122, 56, 0.4);
}

.ide-ai-actions {
  display: flex;
  align-items: center;
  gap: var(--pg-space-3);
}

.ide-ai-submit {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--color-app-bg);
  background: var(--color-accent);
  border: none;
  border-radius: 3px;
  padding: 4px 12px;
  cursor: pointer;
  transition: background var(--pg-transition-fast), opacity var(--pg-transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
}

.ide-ai-submit:hover {
  background: var(--color-accent-light);
}

.ide-ai-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.ide-ai-hint {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: #4a5568;
}

.ide-ai-error {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.675rem;
  color: #fca5a5;
}

.ide-ai-placeholder {
  position: absolute;
  top: 0.5rem;
  left: var(--pg-space-3);
  font-family: 'DM Sans', sans-serif;
  font-size: var(--pg-text-base);
  color: #4a5568;
  pointer-events: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: calc(100% - 1.5rem);
  opacity: 1;
  transition: opacity 0.15s ease-in-out;
}

@keyframes ide-ai-spin {
  to { transform: rotate(360deg); }
}

.ide-ai-submit.is-loading {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.ide-ai-submit.is-loading::before {
  content: '';
  width: 10px;
  height: 10px;
  border: 1.5px solid rgba(17, 24, 39, 0.35);
  border-top-color: var(--color-app-bg);
  border-radius: 50%;
  animation: ide-ai-spin 0.65s linear infinite;
  flex-shrink: 0;
}

/* ── Welcome Modal ── */
.welcome-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.welcome-modal {
  background: linear-gradient(135deg, var(--color-editor-bg) 0%, var(--color-surface-raised) 100%);
  border: 1px solid #2d3748;
  border-radius: 8px;
  padding: var(--pg-space-6);
  max-width: 500px;
  width: 90%;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
  animation: welcomeSlideUp 0.4s cubic-bezier(0.25, 1, 0.5, 1);
  position: relative;
}

@media (prefers-reduced-motion: no-preference) {
  @keyframes welcomeSlideUp {
    from {
      opacity: 0;
      transform: translateY(8px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

@media (prefers-reduced-motion: reduce) {
  .welcome-modal {
    animation: none;
  }
}

.welcome-header {
  margin-bottom: var(--pg-space-5);
}

.welcome-title {
  font-family: 'DM Sans', sans-serif;
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 var(--pg-space-2);
  line-height: 1.3;
}

.welcome-subtitle {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  color: #a8b4c4;
  margin: 0;
  line-height: 1.5;
}

.welcome-content {
  margin-bottom: var(--pg-space-6);
}

.welcome-description {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  color: #c5cdd8;
  line-height: 1.6;
  margin: 0 0 var(--pg-space-5);
}

.welcome-steps {
  list-style: none;
  padding: 0;
  margin: 0;
}

.welcome-steps li {
  display: flex;
  gap: var(--pg-space-3);
  margin-bottom: var(--pg-space-2);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.welcome-steps li:before {
  content: '✓';
  color: var(--color-accent);
  font-weight: bold;
  flex-shrink: 0;
}

.welcome-actions {
  display: flex;
  flex-direction: column;
  gap: var(--pg-space-2);
}

.welcome-btn {
  padding: var(--pg-space-3) var(--pg-space-5);
  border: none;
  border-radius: 4px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--pg-transition-fast);
  text-align: center;
}

.welcome-btn-primary {
  background: var(--color-accent);
  color: var(--color-app-bg);
}

.welcome-btn-primary:hover {
  background: var(--color-accent-light);
  transform: translateY(-1px);
}

.welcome-btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #c5cdd8;
  border: 1px solid #2d3748;
}

.welcome-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #3e4a5c;
}

.welcome-footer {
  margin-top: var(--pg-space-6);
  padding-top: var(--pg-space-6);
  border-top: 1px solid var(--color-border);
}

.welcome-footer-text {
  font-size: 0.775rem;
  color: #6b7a8f;
  margin: 0;
}

.welcome-footer-link {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
}

.welcome-footer-link:hover {
  color: var(--color-accent-light);
  text-decoration: underline;
}

.welcome-close {
  position: absolute;
  top: var(--pg-space-5);
  right: var(--pg-space-5);
  background: none;
  border: none;
  color: #6b7a8f;
  font-size: 1.5rem;
  cursor: pointer;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 3px;
  transition: all var(--pg-transition-fast);
}

.welcome-close:hover {
  color: #c5cdd8;
  background: rgba(255, 255, 255, 0.05);
}

/* ── Onboarding Tooltips ── */
.playground-tooltip {
  position: fixed;
  background: var(--color-surface-raised);
  border: 1px solid rgba(217, 122, 56, 0.3);
  border-radius: 6px;
  padding: var(--pg-space-3);
  max-width: 280px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  z-index: 1000;
  font-family: 'DM Sans', sans-serif;
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translate(0, 4px);
  }
  to {
    opacity: 1;
    transform: translate(0, 0);
  }
}

@keyframes slideOut {
  from {
    opacity: 1;
    transform: translate(0, 0);
  }
  to {
    opacity: 0;
    transform: translate(0, 4px);
  }
}

.playground-tooltip-arrow {
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--color-surface-raised);
  border: 1px solid rgba(217, 122, 56, 0.3);
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
}

.playground-tooltip[data-position="bottom"] .playground-tooltip-arrow {
  top: -5px;
  left: 50%;
  margin-left: -4px;
}

.playground-tooltip[data-position="right"] .playground-tooltip-arrow {
  left: -5px;
  top: 50%;
  margin-top: -4px;
}

.playground-tooltip[data-position="left"] .playground-tooltip-arrow {
  right: -5px;
  top: 50%;
  margin-top: -4px;
}

.playground-tooltip-content {
  position: relative;
  padding-right: var(--pg-space-6);
}

.playground-tooltip-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 var(--pg-space-2);
}

.playground-tooltip-body {
  font-size: 0.8rem;
  color: #a8b4c4;
  line-height: 1.5;
  margin: 0;
}

.playground-tooltip-dismiss {
  position: absolute;
  top: 0;
  right: 0;
  background: none;
  border: none;
  color: #6b7a8f;
  font-size: 0.9rem;
  cursor: pointer;
  padding: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--pg-transition-fast);
}

.playground-tooltip-dismiss:hover {
  color: var(--color-text-primary);
}

/* ── Empty State Guidance ── */
.playground-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: var(--pg-space-6);
  text-align: center;
  color: #4a5568;
}

.playground-empty-state-icon {
  font-size: 2.5rem;
  margin-bottom: var(--pg-space-4);
  opacity: 0.5;
}

.playground-empty-state-heading {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin: 0 0 var(--pg-space-2);
}

.playground-empty-state-text {
  font-size: 0.85rem;
  color: #6b7a8f;
  margin: 0;
  line-height: 1.5;
  max-width: 220px;
}

/* ── Progress Indicators ── */
.playground-progress-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(217, 122, 56, 0.4);
  display: inline-block;
  margin: 0 2px;
}

.playground-progress-dot.completed {
  background: var(--color-accent);
}

/* ── Editor Placeholder ── */
.playground-editor-placeholder {
  position: absolute;
  top: 4px;
  left: 32px;
  right: 0;
  padding: var(--pg-space-2) var(--pg-space-4);
  pointer-events: none;
  opacity: 0.7;
  z-index: 1;
}

.playground-editor-placeholder:hover {
  opacity: 0.9;
}

/* ── Diagram Reveal Animation ── */
@keyframes diagramReveal {
  from {
    opacity: 0;
    transform: scale(0.97);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .playground-tooltip {
    animation: none;
  }

  @keyframes slideOut {
    animation: none;
  }
}

/* Export dropdown */
.ide-export-dropdown {
  position: relative;
  display: inline-block;
}

.ide-export-btn {
  background: none;
  border: none;
  color: var(--color-accent);
  font-size: var(--pg-text-xs);
  font-family: 'JetBrains Mono', monospace;
  padding: 0;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.15s ease-out;
}

.ide-export-btn:hover {
  color: var(--color-accent-light);
}

.ide-export-menu {
  display: none;
  position: absolute;
  bottom: 100%;
  left: 0;
  margin-bottom: 4px;
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  min-width: 180px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  z-index: 100;
}

.ide-export-dropdown:hover .ide-export-menu,
.ide-export-dropdown:focus-within .ide-export-menu {
  display: block;
}

.ide-export-item {
  display: block;
  padding: 8px 12px;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: var(--pg-text-xs);
  font-family: 'JetBrains Mono', monospace;
  transition: background var(--pg-transition-fast), color var(--pg-transition-fast);
  white-space: nowrap;
}

.ide-export-item:first-child {
  border-radius: 3px 3px 0 0;
}

.ide-export-item:last-child {
  border-radius: 0 0 3px 3px;
}

.ide-export-item:hover {
  background: var(--color-surface);
  color: var(--color-text-primary);
}

/* ── Focus Indicators (Keyboard Navigation) ── */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Remove default outline and replace with custom */
:focus {
  outline: none;
}

/* Specific focus styles for interactive elements */
.pg-nav-link:focus-visible,
.pg-nav-cta:focus-visible,
.pg-examples-select:focus-visible,
.ide-tab-btn:focus-visible,
.ide-badge-btn:focus-visible,
.ide-copy-btn:focus-visible,
.ide-popout-btn:focus-visible,
.ide-ai-btn:focus-visible,
.ide-export-btn:focus-visible,
.welcome-btn:focus-visible,
.welcome-close:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}