/* ==========================================================================
   PVC Window & Door Modeling Library Styles - Mobile-First 3-Stage CAD Theme
   Stages: Mobile (< 640px), Tablet (640px - 1024px), Desktop (> 1024px)
   ========================================================================== */

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

:root {
  --pvc-font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Technical Smooth Neutral Palette */
  --pvc-bg-main: #f8fafc;
  --pvc-bg-card: #ffffff;
  --pvc-bg-subtle: #f1f5f9;
  --pvc-bg-hover: #e2e8f0;

  --pvc-border-color: #cbd5e1;
  --pvc-border-dark: #94a3b8;
  --pvc-wire-stroke: #334155;

  --pvc-primary: #2563eb;
  --pvc-primary-hover: #1d4ed8;
  --pvc-primary-bg: #eff6ff;

  --pvc-accent: #0284c7;
  --pvc-danger: #ef4444;
  --pvc-danger-bg: #fef2f2;

  --pvc-text-main: #0f172a;
  --pvc-text-muted: #64748b;
  
  --pvc-radius-sm: 3px;
  --pvc-radius-md: 4px;
}

* {
  box-sizing: border-box;
}

/* ==========================================================================
   1. MOBILE BASE STAGE (< 640px)
   ========================================================================== */

body {
  margin: 0;
  padding: 0;
  font-family: var(--pvc-font-family);
  background: #f1f5f9;
  color: var(--pvc-text-main);
  font-size: 12px;
  min-height: 100vh;
  -webkit-tap-highlight-color: transparent;
}

/* Visible Modern Custom Scrollbar Styles */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f5f9;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
  border: 2px solid #f1f5f9;
}

::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* Firefox scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: #cbd5e1 #f1f5f9;
}

/* Main Container */
.pvc-app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: 6px;
  gap: 6px;
  overflow: hidden;
}

/* Compact Header */
.pvc-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 8px;
  background: var(--pvc-bg-card);
  border: 1px solid var(--pvc-border-color);
  border-radius: var(--pvc-radius-md);
  flex-wrap: wrap;
  gap: 4px;
}

.pvc-header-title {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--pvc-wire-stroke);
  display: flex;
  align-items: center;
  gap: 4px;
}

.pvc-header-subtitle {
  display: none; /* Hidden on mobile */
}

/* Presets bar on header */
.pvc-preset-group {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
}

/* Main Layout Split */
.pvc-main-layout {
  display: flex;
  flex-direction: column; /* Mobile: vertical stack */
  flex: 1;
  gap: 8px;
  min-height: 0;
  overflow-y: auto;
}

.pvc-content-area {
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 8px;
  min-width: 0;
  min-height: 0;
  overflow-y: auto;
  padding-right: 4px;
}

/* SVG Canvas Workspace */
.pvc-canvas-area {
  flex: 0 0 420px;
  min-height: 300px;
  background: #ffffff;
  background-image: 
    linear-gradient(to right, #f1f5f9 1px, transparent 1px),
    linear-gradient(to bottom, #f1f5f9 1px, transparent 1px);
  background-size: 20px 20px;
  border: 1px solid var(--pvc-border-color);
  border-radius: var(--pvc-radius-md);
  position: relative;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.pvc-bom-area {
  width: 100%;
  flex-shrink: 0;
}

/* Sidebar Area */
.pvc-sidebar-area {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 0;
  overflow-y: auto;
  padding-right: 2px;
}

.pvc-crm-preview-box {
  display: none; /* Hidden on mobile */
}

/* SVG Renderer Elements */
.pvc-renderer-container {
  width: 100%;
  height: 100%;
  position: relative;
}

.pvc-window-svg {
  user-select: none;
  touch-action: none;
}

.pvc-pane {
  transition: filter 0.1s ease;
}

.pvc-pane:hover rect {
  filter: brightness(0.97);
}

.pvc-pane.is-selected {
  filter: drop-shadow(0 0 4px rgba(37, 99, 235, 0.4));
}

.pvc-pane-dim {
  opacity: 0.5;
  transition: opacity 0.15s ease;
  fill: #1e293b;
}

.pvc-pane.is-selected .pvc-pane-dim {
  opacity: 1 !important;
  fill: #000000 !important;
  font-weight: 700;
}

.pvc-divider-hitbox:hover {
  stroke: var(--pvc-primary);
  stroke-width: 2;
  stroke-dasharray: 3 2;
}

/* UI Toolbar - Horizontally Scrollable Chips on Mobile */
.pvc-ui-wrapper {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 100%;
}

.pvc-toolbar {
  display: flex;
  flex-wrap: nowrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  align-items: center;
  gap: 6px;
  padding: 4px 6px;
  background: var(--pvc-bg-card);
  border: 1px solid var(--pvc-border-color);
  border-radius: var(--pvc-radius-md);
  scrollbar-width: none;
}
.pvc-toolbar::-webkit-scrollbar {
  display: none;
}

.pvc-toolbar-group {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

.pvc-toolbar-title {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--pvc-text-muted);
}

.pvc-toolbar-divider {
  width: 1px;
  height: 18px;
  background: var(--pvc-border-color);
  flex-shrink: 0;
}

/* Small Inputs & Form Elements */
.pvc-input {
  background: #ffffff;
  border: 1px solid var(--pvc-border-color);
  color: var(--pvc-text-main);
  padding: 2px 4px;
  border-radius: var(--pvc-radius-sm);
  font-size: 0.75rem;
  font-family: inherit;
  height: 24px;
  width: 52px;
  transition: border-color 0.15s;
}

.pvc-input:focus {
  outline: none;
  border-color: var(--pvc-primary);
}

.pvc-select {
  background: #ffffff;
  border: 1px solid var(--pvc-border-color);
  color: var(--pvc-text-main);
  padding: 2px 4px;
  border-radius: var(--pvc-radius-sm);
  font-size: 0.75rem;
  font-family: inherit;
  height: 24px;
  cursor: pointer;
}

.pvc-select:focus {
  outline: none;
  border-color: var(--pvc-primary);
}

/* Compact Touch-Friendly Buttons */
.pvc-btn {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 3px 8px;
  font-size: 0.75rem;
  font-weight: 500;
  font-family: inherit;
  border-radius: var(--pvc-radius-sm);
  border: 1px solid var(--pvc-border-color);
  height: 26px;
  cursor: pointer;
  background: #ffffff;
  color: var(--pvc-text-main);
  transition: all 0.1s;
  flex-shrink: 0;
  touch-action: manipulation;
}

.pvc-btn:active {
  transform: scale(0.97);
}

.pvc-btn-primary {
  background: var(--pvc-primary);
  border-color: var(--pvc-primary);
  color: #ffffff;
}

.pvc-btn-primary:hover {
  background: var(--pvc-primary-hover);
}

.pvc-btn-secondary {
  background: #ffffff;
  border-color: var(--pvc-border-color);
  color: var(--pvc-text-main);
}

.pvc-btn-secondary:hover {
  background: var(--pvc-bg-hover);
}

.pvc-btn-danger {
  background: var(--pvc-danger-bg);
  border-color: rgba(239, 68, 68, 0.4);
  color: var(--pvc-danger);
}

.pvc-btn-danger:hover:not(:disabled) {
  background: var(--pvc-danger);
  color: #ffffff;
}

.pvc-btn:disabled,
.pvc-btn.is-disabled {
  opacity: 0.45;
  cursor: not-allowed;
  background: #f1f5f9 !important;
  border-color: #cbd5e1 !important;
  color: #94a3b8 !important;
  box-shadow: none !important;
}

/* Breadcrumbs Navigation */
.pvc-breadcrumbs {
  display: flex;
  flex-wrap: nowrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  align-items: center;
  gap: 3px;
  padding: 4px 6px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--pvc-radius-sm);
  font-size: 0.7rem;
  scrollbar-width: none;
}
.pvc-breadcrumbs::-webkit-scrollbar {
  display: none;
}

.pvc-breadcrumb-item {
  background: none;
  border: none;
  color: var(--pvc-text-muted);
  font-size: 0.7rem;
  font-family: inherit;
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 2px;
  transition: all 0.1s;
  white-space: nowrap;
}

.pvc-breadcrumb-item:hover {
  background: #e2e8f0;
  color: var(--pvc-primary);
}

.pvc-breadcrumb-item.is-active {
  font-weight: 700;
  color: var(--pvc-primary);
  background: #eff6ff;
}

.pvc-breadcrumb-sep {
  color: #94a3b8;
  font-size: 0.7rem;
}

/* Red 'X' Delete Handle Hover */
.pvc-divider-delete-btn:hover circle {
  fill: #dc2626;
  transform: scale(1.15);
  transform-origin: center;
  transition: transform 0.15s ease;
}

/* Inspector Panel */
.pvc-inspector {
  background: var(--pvc-bg-card);
  border: 1px solid var(--pvc-border-color);
  border-radius: var(--pvc-radius-md);
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.pvc-inspector-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--pvc-border-color);
}

.pvc-inspector-title {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 600;
}

.pvc-badge {
  background: var(--pvc-primary-bg);
  color: var(--pvc-primary);
  font-size: 0.68rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 3px;
  border: 1px solid rgba(37, 99, 235, 0.2);
}

.pvc-inspector-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.pvc-placeholder-text {
  color: var(--pvc-text-muted);
  font-size: 0.72rem;
  line-height: 1.3;
  margin: 0;
  text-align: center;
  padding: 8px 4px;
}

.pvc-form-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.pvc-form-group .pvc-input,
.pvc-form-group .pvc-select {
  width: 100%;
}

.pvc-label {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--pvc-text-muted);
}

.pvc-checkbox-group label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  cursor: pointer;
}

/* Selected Frame Pane Specs Summary Card */
.pvc-pane-specs-card {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--pvc-radius-sm);
  padding: 6px 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 4px;
}

.pvc-spec-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--pvc-text-muted);
}

.pvc-spec-row strong {
  color: var(--pvc-text-main);
}

/* Assembly Parts & BOM Cut List Panel */
.pvc-bom-panel {
  background: var(--pvc-bg-card);
  border: 1px solid var(--pvc-border-color);
  border-radius: var(--pvc-radius-md);
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.pvc-bom-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--pvc-border-color);
}

.pvc-bom-title-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.pvc-bom-metrics {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.7rem;
  color: var(--pvc-text-muted);
  background: var(--pvc-primary-bg);
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: var(--pvc-radius-sm);
  padding: 2px 8px;
  flex-wrap: wrap;
}

.pvc-bom-metric strong {
  color: var(--pvc-primary);
  font-weight: 600;
}

.pvc-bom-metric-divider {
  color: var(--pvc-border-dark);
  opacity: 0.4;
}

/* 4 Column Responsive BOM Grid */
.pvc-bom-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

@media (max-width: 1024px) {
  .pvc-bom-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 580px) {
  .pvc-bom-grid {
    grid-template-columns: 1fr;
  }
}

.pvc-parts-empty {
  font-size: 0.7rem;
  color: var(--pvc-text-muted);
  font-style: italic;
  padding: 2px 0;
}

.pvc-parts-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pvc-parts-summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--pvc-primary-bg);
  color: var(--pvc-primary);
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: var(--pvc-radius-sm);
  padding: 4px 8px;
  font-size: 0.72rem;
}

.pvc-parts-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--pvc-radius-sm);
  padding: 6px;
}

.pvc-parts-group-title {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--pvc-wire-stroke);
  border-bottom: 1px solid #cbd5e1;
  padding-bottom: 3px;
  margin-bottom: 3px;
}

.pvc-parts-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.pvc-parts-list li {
  font-size: 0.7rem;
  display: flex;
  align-items: center;
  gap: 4px;
}

.pvc-parts-count {
  font-weight: 700;
  color: var(--pvc-primary);
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 2px;
  padding: 1px 4px;
  min-width: 24px;
  text-align: center;
}

.pvc-parts-len {
  font-weight: 600;
  color: var(--pvc-text-main);
}

/* Bar Cutting Plan & Stock Layout Panel */
.pvc-cut-plan-area {
  width: 100%;
  flex-shrink: 0;
}

.pvc-cut-plan-panel {
  background: var(--pvc-bg-card);
  border: 1px solid var(--pvc-border-color);
  border-radius: var(--pvc-radius-md);
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pvc-cut-plan-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--pvc-border-color);
}

/* View Toggle Button Group */
.pvc-view-toggle {
  display: inline-flex;
  background: #e2e8f0;
  border-radius: var(--pvc-radius-sm);
  padding: 2px;
  gap: 2px;
}

.pvc-toggle-btn {
  background: transparent;
  border: none;
  font-size: 0.68rem;
  font-weight: 500;
  font-family: inherit;
  color: var(--pvc-text-muted);
  padding: 2px 6px;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.1s;
}

.pvc-toggle-btn.is-active {
  background: #ffffff;
  color: var(--pvc-primary);
  font-weight: 700;
  box-shadow: 0 1px 2px rgba(0,0,0,0.12);
}

/* Compact Visual View (No heavy outer card outlines) */
.pvc-cut-group-compact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-bottom: 6px;
  border-bottom: 1px dashed #cbd5e1;
}
.pvc-cut-group-compact:last-child {
  border-bottom: none;
}

.pvc-cut-group-title {
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--pvc-wire-stroke);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 2px;
}

.pvc-bar-row-compact {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 2px 0;
}

.pvc-bar-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.7rem;
  flex-wrap: wrap;
  gap: 4px;
}

.pvc-bar-cuts-text {
  font-family: 'Fira Code', 'Courier New', monospace;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--pvc-text-main);
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  padding: 1px 5px;
  border-radius: 3px;
}

.pvc-bar-visual-compact {
  display: flex;
  height: 16px;
  border-radius: 2px;
  overflow: hidden;
  border: 1px solid #cbd5e1;
  background: #e2e8f0;
  font-size: 0.6rem;
}

/* Text-Only View (High Density) */
.pvc-cut-text-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-bottom: 6px;
  border-bottom: 1px dashed #cbd5e1;
}
.pvc-cut-text-group:last-child {
  border-bottom: none;
}

.pvc-cut-text-title {
  font-size: 0.73rem;
  font-weight: 700;
  color: var(--pvc-wire-stroke);
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2px;
}

.pvc-cut-text-lines {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.pvc-cut-text-line {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.7rem;
}

.pvc-cut-text-barlabel {
  font-weight: 700;
  color: var(--pvc-text-muted);
  min-width: 105px;
  font-size: 0.7rem;
}

.pvc-bar-segment {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 0 2px;
  border-right: 1px solid rgba(255, 255, 255, 0.4);
  transition: opacity 0.15s;
}

.pvc-bar-segment:hover {
  opacity: 0.9;
}

.pvc-bar-segment-frame { background: #2563eb; }
.pvc-bar-segment-mullion { background: #0284c7; }
.pvc-bar-segment-sash { background: #16a34a; }

.pvc-bar-segment-residue {
  background: repeating-linear-gradient(
    45deg,
    #f1f5f9,
    #f1f5f9 6px,
    #cbd5e1 6px,
    #cbd5e1 12px
  );
  color: #475569;
  font-weight: 600;
  border-right: none;
}

/* Modal */
.pvc-modal {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(2px);
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: center;
}

.pvc-modal-content {
  background: #ffffff;
  border: 1px solid var(--pvc-border-color);
  border-radius: var(--pvc-radius-md);
  width: 520px;
  max-width: 94vw;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.pvc-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.pvc-modal-header h3 {
  margin: 0;
  font-size: 0.9rem;
}

.pvc-close-btn {
  background: none;
  border: none;
  color: var(--pvc-text-muted);
  font-size: 1.2rem;
  cursor: pointer;
}

.pvc-close-btn:hover {
  color: var(--pvc-text-main);
}

.pvc-json-textarea {
  width: 100%;
  height: 180px;
  background: #f8fafc;
  border: 1px solid var(--pvc-border-color);
  color: #0f172a;
  font-family: 'Fira Code', 'Courier New', monospace;
  font-size: 0.72rem;
  padding: 6px;
  border-radius: var(--pvc-radius-sm);
  resize: vertical;
}

.pvc-json-textarea:focus {
  outline: none;
  border-color: var(--pvc-primary);
}

.pvc-modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 6px;
}


/* ==========================================================================
   2. TABLET STAGE (640px - 1024px)
   ========================================================================== */

@media (min-width: 640px) {
  .pvc-app-container {
    padding: 6px;
    gap: 6px;
  }

  .pvc-header {
    padding: 6px 10px;
  }

  .pvc-header-subtitle {
    display: inline;
  }

  .pvc-main-layout {
    flex-direction: row; /* 2-Column layout */
    overflow-y: hidden;
  }

  .pvc-canvas-area {
    height: 100%;
    min-height: 0;
  }

  .pvc-sidebar-area {
    width: 220px;
  }

  .pvc-toolbar {
    flex-wrap: wrap;
    overflow-x: visible;
  }

  .pvc-input {
    width: 58px;
  }
}


/* ==========================================================================
   3. DESKTOP STAGE (> 1024px)
   ========================================================================== */

@media (min-width: 1024px) {
  .pvc-app-container {
    padding: 8px;
    gap: 8px;
  }

  .pvc-sidebar-area {
    width: 280px;
  }

  .pvc-crm-preview-box {
    display: flex; /* Visible on desktop */
  }

  .pvc-inspector {
    padding: 10px;
    gap: 8px;
  }
}