/* ===================================================================
   Unreal Engine 5 NodeToCode - Modern Cyberpunk / Dark Slate Theme
   =================================================================== */

:root {
  --bg-primary: #0a0c10;
  --bg-secondary: #12151c;
  --bg-card: #181d27;
  --bg-elevated: #212736;
  --bg-input: #0e1117;

  --border-subtle: #272f3e;
  --border-focus: #38bdf8;
  --border-glow: rgba(56, 189, 248, 0.35);

  --text-main: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-cyan: #06b6d4;
  --accent-blue: #3b82f6;
  --accent-indigo: #6366f1;
  --accent-green: #10b981;
  --accent-amber: #f59e0b;
  --accent-red: #ef4444;
  --accent-purple: #a855f7;

  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.6), 0 0 1px 1px rgba(255, 255, 255, 0.05);
  --shadow-glow: 0 0 20px rgba(6, 182, 212, 0.25);

  --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: #2d3748;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #4a5568;
}

/* Header */
.app-header {
  background: rgba(18, 21, 28, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.85rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand-container {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #0284c7, #6366f1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px rgba(2, 132, 199, 0.4);
}

.brand-icon svg {
  width: 22px;
  height: 22px;
  fill: #ffffff;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(90deg, #ffffff 40%, var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.badge-version {
  background: rgba(6, 182, 212, 0.12);
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}

/* Nav Tabs */
.nav-tabs-wrapper {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0 2rem;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
}

.nav-tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.9rem 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}

.nav-tab-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.03);
}

.nav-tab-btn.active {
  color: var(--accent-cyan);
  border-bottom-color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.05);
}

/* Main Content Area */
.main-container {
  flex: 1;
  padding: 1.5rem 2rem;
  max-width: 1800px;
  margin: 0 auto;
  width: 100%;
}

.tab-pane {
  display: none;
  animation: fadeIn 0.25s ease-out;
}

.tab-pane.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Preset Toolbar */
.preset-bar {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.75rem 1.2rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.preset-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.preset-buttons {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-preset {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.btn-preset:hover {
  background: #2b3447;
  border-color: var(--accent-cyan);
  color: #ffffff;
}

/* Dual Editor Split View */
.dual-editor-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

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

.editor-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-card);
  overflow: hidden;
  height: calc(100vh - 190px);
  min-height: 520px;
}

@media (max-width: 1200px) {
  .editor-card {
    height: calc(55vh - 190px);
  }
}

.editor-card-header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.75rem 1.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.editor-card-title {
  font-size: 0.95rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.editor-header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.code-format-select {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  font-size: 0.8rem;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.btn-icon {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition);
}

.btn-icon:hover {
  background: #2b3447;
  color: #ffffff;
  border-color: var(--border-focus);
}

.btn-icon.btn-primary {
  background: linear-gradient(135deg, #0284c7, #2563eb);
  border-color: #0284c7;
  color: #ffffff;
}

.btn-icon.btn-primary:hover {
  background: linear-gradient(135deg, #0369a1, #1d4ed8);
  box-shadow: 0 0 12px rgba(2, 132, 199, 0.4);
}

.btn-icon.btn-success {
  background: linear-gradient(135deg, #059669, #10b981);
  border-color: #059669;
  color: #ffffff;
}

.btn-icon.btn-success:hover {
  box-shadow: 0 0 12px rgba(16, 185, 129, 0.4);
}

/* Editor Input & Output Areas */
.editor-body {
  flex: 1;
  position: relative;
  display: flex;
  flex-direction: column;
}

.code-textarea {
  width: 100%;
  height: 100%;
  background: var(--bg-input);
  color: #e2e8f0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  padding: 1rem;
  border: none;
  resize: none;
  outline: none;
  white-space: pre;
  tab-size: 2;
}

.code-textarea::placeholder {
  color: #475569;
}

.code-textarea:focus {
  background: #090c12;
}

/* Analytics Stats Bar */
.analytics-bar {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 0.6rem 1.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bg-elevated);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-weight: 500;
}

.stat-pill.savings {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
  font-weight: 700;
}

/* Canvas Graph Visualizer */
.canvas-wrapper {
  background: #12141a;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  height: 720px;
  box-shadow: var(--shadow-card);
}

.canvas-toolbar {
  position: absolute;
  top: 1rem;
  right: 1rem;
  display: flex;
  gap: 0.5rem;
  z-index: 10;
  background: rgba(18, 21, 28, 0.85);
  backdrop-filter: blur(8px);
  padding: 0.4rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

#blueprint-canvas {
  width: 100%;
  height: 100%;
  cursor: grab;
}

#blueprint-canvas:active {
  cursor: grabbing;
}

/* Prompt Generator Section */
.prompt-section-grid {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .prompt-section-grid {
    grid-template-columns: 1fr;
  }
}

.prompt-sidebar {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.prompt-list-item {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  padding: 0.85rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
}

.prompt-list-item:hover,
.prompt-list-item.active {
  border-color: var(--accent-cyan);
  background: #252e40;
}

.prompt-list-item h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: #ffffff;
}

.prompt-list-item p {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Node Catalog */
.catalog-controls {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.search-input {
  flex: 1;
  min-width: 250px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: #ffffff;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  outline: none;
}

.search-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px var(--border-glow);
}

.category-filter {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: #ffffff;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  outline: none;
  cursor: pointer;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1rem;
}

.catalog-node-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.catalog-node-card:hover {
  transform: translateY(-2px);
  border-color: #3b82f6;
  box-shadow: var(--shadow-card);
}

.catalog-card-header {
  padding: 0.75rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #ffffff;
  font-weight: 700;
  font-size: 0.9rem;
}

.catalog-card-body {
  padding: 1rem;
  font-size: 0.8rem;
}

.catalog-card-desc {
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.pin-tag-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.pin-tag-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.pin-badge {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

/* Documentation Markdown Area */
.doc-container {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  max-width: 1000px;
  margin: 0 auto;
  line-height: 1.7;
}

.doc-container h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: #ffffff;
}

.doc-container h2 {
  font-size: 1.4rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--accent-cyan);
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.4rem;
}

.doc-container h3 {
  font-size: 1.1rem;
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
  color: #e2e8f0;
}

.doc-container p,
.doc-container ul,
.doc-container ol {
  color: #cbd5e1;
  margin-bottom: 1rem;
}

.doc-container ul,
.doc-container ol {
  padding-left: 1.5rem;
}

.doc-container code {
  background: var(--bg-input);
  color: #38bdf8;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.85em;
}

.doc-container pre {
  background: var(--bg-input);
  padding: 1.2rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border-subtle);
}

.doc-container pre code {
  background: transparent;
  padding: 0;
  color: #f1f5f9;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  background: var(--bg-elevated);
  color: #ffffff;
  border: 1px solid var(--accent-cyan);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5), var(--shadow-glow);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  animation: slideUp 0.25s ease-out;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(15px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}