/* ==========================================================================
   Factorio 2.0 + Space Age Recipe Explorer - Obsidian Canvas Styles
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@500;600;700&display=swap');

:root {
  --bg-darkest: #07090e;
  --bg-primary: #0b0f17;
  --bg-surface: #121824;
  --bg-surface-elevated: #182232;
  --bg-surface-hover: #1f2b40;
  
  --border-subtle: #1c2738;
  --border-medium: #28374f;
  --border-bright: #3d5070;
  
  --text-main: #e2e8f0;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --text-highlight: #ffffff;
  
  --factorio-orange: #f59e0b;
  --factorio-orange-glow: rgba(245, 158, 11, 0.4);
  --tech-cyan: #06b6d4;
  --tech-cyan-glow: rgba(6, 182, 212, 0.4);
  --fluid-blue: #38bdf8;
  --gleba-color: #4ade80;
  --color-purple: #c084fc;
  --barrel-amber: #f97316;
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --transition-fast: 0.12s ease;
  --shadow-popup: 0 16px 36px -4px rgba(0, 0, 0, 0.95), 0 0 0 1px var(--border-bright);
}

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

body {
  background-color: var(--bg-darkest);
  color: var(--text-main);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  user-select: none;
}

/* Header */
.app-header {
  z-index: 100;
  background: rgba(11, 15, 23, 0.96);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 8px 20px;
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 1900px;
  margin: 0 auto;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-icon-wrapper {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #1e293b, #0f172a);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 12px var(--factorio-orange-glow);
}

.brand-icon-wrapper img {
  width: 24px;
  height: 24px;
  image-rendering: pixelated;
}

.brand-text h1 {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-highlight);
  display: flex;
  align-items: center;
  gap: 6px;
}

.brand-text h1 span.highlight {
  color: var(--factorio-orange);
}

.brand-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 1px 5px;
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--factorio-orange);
  border-radius: 4px;
}

/* Search & Results Dropdown */
.search-container {
  flex: 1;
  max-width: 520px;
  position: relative;
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 12px;
  color: var(--text-dim);
  font-size: 0.9rem;
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 8px 36px 8px 34px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  color: var(--text-highlight);
  font-size: 0.85rem;
  font-family: 'Inter', sans-serif;
  outline: none;
  transition: var(--transition-fast);
}

.search-input:focus {
  border-color: var(--factorio-orange);
  background: var(--bg-surface-elevated);
  box-shadow: 0 0 0 2px var(--factorio-orange-glow);
}

.search-shortcut {
  position: absolute;
  right: 10px;
  background: var(--bg-darkest);
  border: 1px solid var(--border-medium);
  color: var(--text-dim);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  padding: 1px 4px;
  border-radius: 3px;
  pointer-events: none;
}

.search-clear-btn {
  position: absolute;
  right: 8px;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  display: none;
}

/* Dropdown Matching List */
.search-results-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background: rgba(14, 18, 27, 0.98);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-popup);
  z-index: 1500;
  max-height: 380px;
  overflow-y: auto;
  display: none;
  flex-direction: column;
  padding: 6px;
  gap: 2px;
}

.search-results-dropdown.visible {
  display: flex;
}

.dropdown-header {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-dim);
  padding: 6px 10px 4px 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 4px;
  display: flex;
  justify-content: space-between;
}

.search-result-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-main);
  cursor: pointer;
  transition: var(--transition-fast);
}

.search-result-item:hover, .search-result-item.selected {
  background: var(--bg-surface-elevated);
  border-color: var(--tech-cyan);
  color: var(--text-highlight);
}

.search-result-item.selected {
  background: rgba(6, 182, 212, 0.15);
  border-color: var(--tech-cyan);
}

.search-result-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.search-result-icon {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  background: var(--bg-darkest);
  image-rendering: pixelated;
}

.search-result-name {
  font-size: 0.85rem;
  font-weight: 600;
}

.search-result-badge {
  font-size: 0.7rem;
  font-family: 'JetBrains Mono', monospace;
  padding: 1px 6px;
  border-radius: 3px;
  background: var(--bg-darkest);
  border: 1px solid var(--border-subtle);
  color: var(--text-dim);
}

/* Sub-Header Toolbar (Switches, Depth Slider & Status) */
.sub-toolbar {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-subtle);
  padding: 6px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.toggles-group {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.switch-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  padding: 4px 9px;
  border-radius: var(--radius-sm);
  font-size: 0.74rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  user-select: none;
}

.switch-chip:hover {
  background: var(--bg-surface-elevated);
  color: var(--text-highlight);
}

.switch-chip.active {
  background: rgba(245, 158, 11, 0.16);
  border-color: var(--factorio-orange);
  color: var(--factorio-orange);
}

.switch-chip.active.fluid-switch {
  background: rgba(56, 189, 248, 0.16);
  border-color: var(--fluid-blue);
  color: var(--fluid-blue);
}

.switch-chip.active.color-switch {
  background: rgba(192, 132, 252, 0.16);
  border-color: var(--color-purple);
  color: var(--color-purple);
}

.switch-chip.active.barrel-switch {
  background: rgba(249, 115, 22, 0.16);
  border-color: var(--barrel-amber);
  color: var(--barrel-amber);
}

.switch-chip .indicator {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--border-bright);
  transition: background var(--transition-fast);
}

.switch-chip.active .indicator {
  background: var(--factorio-orange);
  box-shadow: 0 0 6px var(--factorio-orange-glow);
}

.switch-chip.active.fluid-switch .indicator {
  background: var(--fluid-blue);
  box-shadow: 0 0 6px rgba(56, 189, 248, 0.5);
}

.switch-chip.active.color-switch .indicator {
  background: var(--color-purple);
  box-shadow: 0 0 6px rgba(192, 132, 252, 0.5);
}

.switch-chip.active.barrel-switch .indicator {
  background: var(--barrel-amber);
  box-shadow: 0 0 6px rgba(249, 115, 22, 0.5);
}

/* Downstream Crafting Depth Slider */
.depth-slider-container {
  display: none;
  align-items: center;
  gap: 8px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
}

.depth-slider-container.visible {
  display: flex;
}

.depth-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
}

.depth-value-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--factorio-orange);
  min-width: 24px;
  text-align: center;
  background: var(--bg-darkest);
  padding: 1px 6px;
  border-radius: 3px;
  border: 1px solid var(--border-subtle);
}

.depth-range-input {
  -webkit-appearance: none;
  appearance: none;
  width: 80px;
  height: 4px;
  background: var(--border-bright);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.depth-range-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--factorio-orange);
  box-shadow: 0 0 6px var(--factorio-orange-glow);
  cursor: pointer;
}

/* Status / Isolation Banner */
.status-info {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.status-info strong {
  color: var(--text-highlight);
}

.reset-tree-btn {
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid var(--factorio-orange);
  color: var(--factorio-orange);
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
  display: none;
  align-items: center;
  gap: 4px;
  transition: var(--transition-fast);
}

.reset-tree-btn:hover {
  background: rgba(245, 158, 11, 0.25);
  box-shadow: 0 0 10px var(--factorio-orange-glow);
}

/* Main Viewport */
.main-viewport {
  flex: 1;
  position: relative;
  overflow: hidden;
}

/* HTML5 Canvas Surface */
.canvas-element {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}
.canvas-element:active, .canvas-element.dragging {
  cursor: grabbing;
}

/* Canvas Floating HUD Controls */
.canvas-controls-hud {
  position: absolute;
  bottom: 20px;
  right: 20px;
  z-index: 50;
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: rgba(14, 19, 28, 0.92);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 4px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.8);
}

.canvas-hud-btn {
  width: 32px;
  height: 32px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.canvas-hud-btn:hover {
  background: var(--bg-surface-elevated);
  color: var(--factorio-orange);
  border-color: var(--factorio-orange);
}

/* Arrow & Extraction Hover Tooltip Card */
.arrow-hover-card {
  position: fixed;
  z-index: 1200;
  width: 400px;
  background: rgba(14, 18, 27, 0.98);
  backdrop-filter: blur(20px);
  border: 1px solid var(--factorio-orange);
  border-radius: var(--radius-md);
  padding: 14px;
  box-shadow: 0 16px 36px rgba(0,0,0,0.95), 0 0 20px var(--factorio-orange-glow);
  pointer-events: none;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.08s ease, transform 0.08s ease;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.arrow-hover-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.arrow-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.arrow-card-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-darkest);
  border: 1px solid var(--border-medium);
  padding: 2px;
  image-rendering: pixelated;
}

.arrow-card-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-highlight);
}

/* Complete Recipe Formula Layout */
.recipe-formula-box {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--bg-darkest);
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.formula-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-dim);
  display: flex;
  justify-content: space-between;
}

.formula-flow {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.formula-inputs {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.formula-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.73rem;
  color: var(--text-main);
}

.formula-chip.highlight-source {
  border-color: var(--tech-cyan);
  background: rgba(6, 182, 212, 0.15);
  color: #ffffff;
  font-weight: 700;
}

.formula-chip img {
  width: 16px;
  height: 16px;
  image-rendering: pixelated;
}

.formula-arrow {
  color: var(--factorio-orange);
  font-weight: 800;
  font-size: 0.9rem;
}

.formula-output {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid var(--factorio-orange);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--factorio-orange);
}

.formula-output img {
  width: 18px;
  height: 18px;
  image-rendering: pixelated;
}

/* Alternate Recipes Section in Tooltip */
.alt-recipes-box {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: var(--bg-darkest);
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.alt-recipes-header {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--tech-cyan);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.alt-recipe-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.alt-recipe-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.73rem;
}

.alt-recipe-row.current-active {
  border-color: var(--factorio-orange);
  background: rgba(245, 158, 11, 0.12);
}

.alt-recipe-name {
  display: flex;
  align-items: center;
  gap: 5px;
  font-weight: 600;
  color: var(--text-highlight);
}

.alt-recipe-name img {
  width: 16px;
  height: 16px;
  image-rendering: pixelated;
}

.machine-rows-container {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.machine-stat-chip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-darkest);
  border: 1px solid var(--border-subtle);
  padding: 5px 8px;
  border-radius: 5px;
  font-size: 0.75rem;
}

.machine-stat-chip .info {
  display: flex;
  align-items: center;
  gap: 6px;
}

.machine-stat-chip img {
  width: 20px;
  height: 20px;
  image-rendering: pixelated;
}

/* ==========================================================================
   Mobile & Responsive Styles (< 768px)
   ========================================================================== */
@media (max-width: 768px) {
  body {
    height: 100dvh;
  }

  .app-header {
    padding: 8px 12px;
  }

  .header-top {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .brand-section {
    justify-content: space-between;
  }

  .brand-text h1 {
    font-size: 0.95rem;
  }

  .search-container {
    width: 100%;
    max-width: none;
  }

  .search-shortcut {
    display: none;
  }

  .sub-toolbar {
    padding: 6px 10px;
    gap: 8px;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .sub-toolbar::-webkit-scrollbar {
    display: none;
  }

  .toggles-group {
    flex-shrink: 0;
    gap: 6px;
  }

  .switch-chip {
    padding: 5px 9px;
    font-size: 0.72rem;
    white-space: nowrap;
  }

  .status-info {
    font-size: 0.72rem;
    white-space: nowrap;
  }

  .canvas-controls-hud {
    bottom: 16px;
    right: 16px;
    gap: 6px;
  }

  .canvas-hud-btn {
    width: 40px;
    height: 40px;
    font-size: 1.1rem;
  }

  /* Mobile Bottom Sheet for Arrow & Node Cards */
  .arrow-hover-card {
    position: fixed !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    top: auto !important;
    width: 100% !important;
    max-width: 100% !important;
    max-height: 70dvh;
    border-radius: 16px 16px 0 0;
    border-left: none;
    border-right: none;
    border-bottom: none;
    border-top: 2px solid var(--factorio-orange);
    box-shadow: 0 -12px 36px rgba(0, 0, 0, 0.85);
    transform: translateY(100%);
    transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease;
    padding: 16px 18px 24px;
    z-index: 200;
  }

  .arrow-hover-card.visible {
    transform: translateY(0);
  }

  .mobile-sheet-handle {
    width: 36px;
    height: 4px;
    background: var(--border-bright);
    border-radius: 2px;
    margin: 0 auto 10px auto;
  }
}

/* ==========================================================================
   View Mode Tabs (Canvas vs Calculator)
   ========================================================================== */
.view-mode-tabs {
  display: flex;
  align-items: center;
  background: var(--bg-darkest);
  padding: 3px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-medium);
  gap: 3px;
}

.view-tab-btn {
  background: transparent;
  color: var(--text-muted);
  border: none;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.view-tab-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.view-tab-btn.active {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.25), rgba(245, 158, 11, 0.1));
  color: var(--factorio-orange);
  border: 1px solid rgba(245, 158, 11, 0.4);
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.2);
}

/* ==========================================================================
   Production Calculator Styles
   ========================================================================== */
.calc-viewport {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  background: #080b11;
  padding: 20px 16px 80px;
  scroll-behavior: smooth;
  user-select: text;
}

.calc-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Target Header Card */
.calc-header-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.calc-target-row {
  display: flex;
  align-items: flex-end;
  gap: 14px;
  flex-wrap: wrap;
}

.calc-field-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
  min-width: 140px;
}

.calc-field-group label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.calc-search-wrapper {
  position: relative;
  width: 100%;
}

.calc-input {
  background: var(--bg-darkest);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-sm);
  color: var(--text-highlight);
  padding: 8px 12px;
  font-size: 0.85rem;
  font-weight: 600;
  width: 100%;
  outline: none;
  transition: border-color var(--transition-fast);
}

.calc-input:focus {
  border-color: var(--factorio-orange);
  box-shadow: 0 0 8px var(--factorio-orange-glow);
}

.calc-select {
  background: var(--bg-darkest);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-sm);
  color: var(--text-highlight);
  padding: 8px 10px;
  font-size: 0.82rem;
  font-weight: 600;
  outline: none;
  cursor: pointer;
}

.calc-select:focus {
  border-color: var(--tech-cyan);
}

.calc-select-mini {
  background: var(--bg-darkest);
  border: 1px solid var(--border-medium);
  border-radius: 4px;
  color: var(--text-main);
  padding: 4px 6px;
  font-size: 0.73rem;
  outline: none;
  cursor: pointer;
  max-width: 100%;
}

.calc-btn-secondary {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-bright);
  color: var(--text-main);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.calc-btn-secondary:hover {
  background: var(--bg-surface-hover);
  border-color: var(--factorio-orange);
  color: var(--factorio-orange);
}

.calc-item-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 4px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-popup);
  max-height: 280px;
  overflow-y: auto;
  z-index: 500;
  display: none;
}

.calc-item-dropdown.visible {
  display: flex;
  flex-direction: column;
}

.calc-dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  cursor: pointer;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-main);
}

.calc-dropdown-item:hover {
  background: rgba(245, 158, 11, 0.15);
  color: var(--factorio-orange);
}

.calc-dropdown-item img {
  width: 22px;
  height: 22px;
  image-rendering: pixelated;
}

.calc-dropdown-item .badge {
  margin-left: auto;
  font-size: 0.65rem;
  color: var(--text-dim);
  text-transform: uppercase;
}

/* Quick Picks */
.calc-quick-picks {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.calc-quick-label {
  font-size: 0.7rem;
  color: var(--text-dim);
  font-weight: 700;
  text-transform: uppercase;
}

.quick-chip {
  background: var(--bg-darkest);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.quick-chip:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--tech-cyan);
  color: var(--tech-cyan);
}

/* Summary Section */
.calc-summary-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 16px;
}

.summary-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.summary-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--text-highlight);
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 8px;
}

.summary-card-header .badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  background: rgba(6, 182, 212, 0.15);
  color: var(--tech-cyan);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.summary-chips-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.summary-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-darkest);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
}

.summary-chip img {
  width: 22px;
  height: 22px;
  image-rendering: pixelated;
}

.summary-chip-info {
  display: flex;
  flex-direction: column;
}

.summary-chip-info .name {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-main);
}

.summary-chip-info .val {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--tech-cyan);
  font-family: 'JetBrains Mono', monospace;
}

.empty-hint {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-style: italic;
  padding: 8px 0;
}

/* Recursive Tree Section */
.calc-tree-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.calc-tree-header {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.calc-tree-header h3 {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-highlight);
}

.calc-tree-hint {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.calc-tree-content {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* Recursive Tree Nodes */
.calc-tree-node {
  display: flex;
  flex-direction: column;
  position: relative;
}

.calc-tree-children {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-left: 24px;
  padding-left: 16px;
  border-left: 2px dashed rgba(56, 189, 248, 0.3);
  margin-top: 10px;
}

.calc-node-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
  transition: border-color var(--transition-fast);
}

.calc-tree-node.root-node > .calc-node-card {
  border: 2px solid var(--factorio-orange);
  background: linear-gradient(180deg, #161f2e, var(--bg-surface));
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.15);
}

.calc-card-main-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.calc-item-identity {
  display: flex;
  align-items: center;
  gap: 10px;
}

.calc-item-icon {
  width: 28px;
  height: 28px;
  image-rendering: pixelated;
}

.calc-item-title-group {
  display: flex;
  flex-direction: column;
}

.calc-item-name {
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--text-highlight);
}

.calc-item-rate {
  font-size: 0.74rem;
  color: var(--tech-cyan);
  font-family: 'JetBrains Mono', monospace;
}

.calc-item-rate strong {
  color: #38bdf8;
}

.calc-status-selector-wrapper {
  display: flex;
  align-items: center;
  gap: 6px;
}

.status-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-dim);
}

.present-banner {
  background: rgba(74, 222, 128, 0.1);
  border: 1px solid rgba(74, 222, 128, 0.3);
  color: #4ade80;
  font-size: 0.74rem;
  font-weight: 600;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
}

.calc-card-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.calc-card-row .field-half {
  flex: 1;
  min-width: 140px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.row-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* Machine Config & Modules Box */
.calc-machine-config-panel {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 10px;
}

.calc-modules-box {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--bg-darkest);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
}

.calc-modules-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 6px;
}

.quick-mod-buttons {
  display: flex;
  align-items: center;
  gap: 4px;
}

.btn-mod-preset {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-bright);
  color: var(--text-main);
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 0.68rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-mod-preset:hover:not(:disabled) {
  background: var(--bg-surface-hover);
  border-color: var(--tech-cyan);
  color: var(--tech-cyan);
}

.btn-mod-preset:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.notice-no-prod {
  font-size: 0.65rem;
  color: #f87171;
  font-weight: 700;
  background: rgba(239, 68, 68, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Non-Overlapping Visual Module Slots */
.module-slots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 8px;
}

.module-slot-card {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.module-slot-left {
  display: flex;
  align-items: center;
  gap: 6px;
}

.slot-idx {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--text-dim);
}

.slot-icon-box {
  width: 32px;
  height: 32px;
  background: var(--bg-darkest);
  border: 1px solid var(--border-bright);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.module-slot-controls {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
  min-width: 0;
}

.module-slot-controls .calc-select {
  padding: 4px 6px;
  font-size: 0.72rem;
  width: 100%;
}

.no-module-slots-hint {
  font-size: 0.72rem;
  color: var(--text-dim);
  font-style: italic;
}

/* Beacons Configuration Panel */
.calc-beacons-panel {
  background: var(--bg-darkest);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.beacons-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 6px;
}

.beacons-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--factorio-orange);
}

.beacons-quick-btns {
  display: flex;
  align-items: center;
  gap: 4px;
}

.btn-beacon-quick {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-bright);
  color: var(--text-main);
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 0.68rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-beacon-quick:hover {
  background: var(--bg-surface-hover);
  border-color: var(--factorio-orange);
  color: var(--factorio-orange);
}

.beacons-config-row {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}

.beacon-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
  min-width: 130px;
}

.beacon-field label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-dim);
}

.beacon-count-control {
  display: flex;
  align-items: center;
  gap: 8px;
}

.beacon-range-input {
  flex: 1;
  accent-color: var(--factorio-orange);
  cursor: pointer;
}

.beacon-count-val {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--factorio-orange);
  min-width: 24px;
  text-align: right;
}

.beacon-math-hint {
  font-size: 0.72rem;
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: 4px;
  padding: 6px 10px;
}

/* Single Recipe & Multi Recipe Cards */
.recipe-single-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  flex-wrap: wrap;
}

.rec-info-left {
  display: flex;
  align-items: center;
  gap: 6px;
}

.rec-tag-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-dim);
}

.rec-name {
  font-size: 0.82rem;
  color: var(--text-highlight);
}

.rec-time {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.recipe-multi-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: rgba(6, 182, 212, 0.04);
  border: 1px solid rgba(6, 182, 212, 0.2);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  flex-wrap: wrap;
}

.rec-select-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.rec-flow-preview {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.72rem;
  color: var(--text-dim);
}

.rec-ing-chip {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  background: var(--bg-darkest);
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  padding: 1px 4px;
  font-size: 0.68rem;
  color: var(--text-main);
}

/* Machine Stats Bar */
.calc-machine-stats-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  background: var(--bg-darkest);
  border-radius: 4px;
  padding: 6px 10px;
}

.stat-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--text-main);
}

.stat-badge strong {
  color: var(--factorio-orange);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
}

.stat-badge-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.stat-badge-sub strong {
  color: var(--tech-cyan);
}

/* ==========================================================================
   Code-Editor Minimap (Right Sidebar)
   ========================================================================== */
.calc-page-layout {
  display: flex;
  gap: 16px;
  max-width: 1400px;
  margin: 0 auto;
  align-items: flex-start;
  position: relative;
}

.calc-main-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.calc-minimap-sidebar {
  width: 230px;
  min-width: 230px;
  position: sticky;
  top: 16px;
  max-height: calc(100vh - 120px);
  background: rgba(11, 15, 23, 0.94);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  user-select: none;
}

.minimap-header {
  padding: 8px 10px;
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--tech-cyan);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
}

.minimap-content {
  overflow-y: auto;
  overflow-x: hidden;
  padding: 6px 4px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-height: calc(100vh - 160px);
}

.minimap-content::-webkit-scrollbar {
  width: 4px;
}

.minimap-content::-webkit-scrollbar-thumb {
  background: var(--border-bright);
  border-radius: 2px;
}

.minimap-row {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 3px 6px;
  border-radius: 3px;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.minimap-row:hover {
  background: rgba(245, 158, 11, 0.15);
  border-color: rgba(245, 158, 11, 0.3);
}

.minimap-row.root-row {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.4);
}

.minimap-text {
  font-size: 0.66rem;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.minimap-tag {
  font-size: 0.58rem;
  font-family: 'JetBrains Mono', monospace;
  padding: 1px 4px;
  border-radius: 3px;
  white-space: nowrap;
}

.minimap-tag.craft {
  background: rgba(6, 182, 212, 0.15);
  color: var(--tech-cyan);
}

.minimap-tag.present {
  background: rgba(74, 222, 128, 0.15);
  color: #4ade80;
}

.highlight-pulse {
  animation: pulse-border 1.2s ease-out;
}

@keyframes pulse-border {
  0% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.8); }
  50% { box-shadow: 0 0 0 10px rgba(245, 158, 11, 0.3); }
  100% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0); }
}

@media (max-width: 1024px) {
  .calc-minimap-sidebar {
    display: none;
  }
}