/**
 * Designer Page - Main Styles
 * Minimalist design system
 */

/* ========== CSS Variables - Dark Design System ========== */
:root {
  /* Colors - Dark theme (matches Studio) */
  --color-primary: #06b6d4;
  --color-background: #0d0d14;
  --color-surface: #1e1e2e;
  --color-border: #2a2a3e;
  --color-border-light: #353548;
  --color-text-primary: #e4e4e7;
  --color-text-secondary: #a1a1aa;
  --color-text-tertiary: #71717a;
  --color-text-muted: #52525b;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;

  /* Aliases for mobile CSS compatibility */
  --accent: #06b6d4;
  --accent-light: rgba(6, 182, 212, 0.1);
  --accent-gradient: linear-gradient(135deg, #06b6d4, #3b82f6);
  --bg-primary: #0d0d14;
  --bg-secondary: #1e1e2e;
  --bg-tertiary: #27273a;
  --bg-elevated: #2f2f45;
  --text-primary: #e4e4e7;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --border: #2a2a3e;
  --border-light: #353548;
  --border-color: #2a2a3e;
  --primary-color: #06b6d4;
  --transition: all 0.15s ease;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-lg: 16px;
  --spacing-xl: 24px;
  --spacing-2xl: 32px;

  /* Border Radius */
  --radius-none: 0;
  --radius-sm: 2px;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  --font-size-xs: 10px;
  --font-size-sm: 11px;
  --font-size-base: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 28px;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.2s ease;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.15);

  /* Focus */
  --focus-ring: 3px solid var(--color-primary);
  --focus-offset: 2px;
}

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

html {
  height: 100%;
  overflow: hidden;
}

body {
  margin: 0;
  font-family: var(--font-family);
  overflow: hidden;
  background: var(--color-background);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-normal);
  line-height: 1.5;
  height: 100%;
  width: 100%;
  position: fixed;
  inset: 0;
}

.hidden {
  display: none !important;
}

/* ========== Loading Screen ========== */
.loading-screen {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-background);
  z-index: 9999;
}

.loading-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  max-width: 500px;
  padding: 40px;
  animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.loading-logo {
  display: block;
  width: 80px;
  height: 80px;
}

.loading-text {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.02em;
  margin: 0;
}

.loading-status {
  color: var(--color-text-muted);
  font-size: 12px;
  margin-top: -12px;
  min-height: 16px;
}

.loading-dots::after {
  content: '';
  animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
  0% { content: ''; }
  25% { content: '.'; }
  50% { content: '..'; }
  75% { content: '...'; }
}

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

/* ========== Desktop Embed Mode (ULTRA STRONG) ========== */
body.desktop-embed,
body.embed-mode:not(.mobile-embed) {
  height: 100vh !important;
  width: 100vw !important;
  overflow: hidden !important;
  position: fixed !important;
  inset: 0 !important;
}

body.desktop-embed .app-container,
body.embed-mode:not(.mobile-embed) .app-container {
  height: 100% !important;
  width: 100% !important;
  display: flex !important;
  flex-direction: column !important;
  position: absolute !important;
  inset: 0 !important;
}

/* Compact header - mamamiya branding bar */
body.desktop-embed .compact-header,
body.embed-mode:not(.mobile-embed) .compact-header {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  height: 36px !important;
  min-height: 36px !important;
  max-height: 36px !important;
  padding: 0 40px 0 12px !important;
  background: var(--color-surface) !important;
  border-bottom: 1px solid var(--color-border) !important;
  flex-shrink: 0 !important;
}

body.desktop-embed .compact-header-left,
body.embed-mode:not(.mobile-embed) .compact-header-left {
  display: flex !important;
  align-items: center !important;
  flex-shrink: 0 !important;
}

body.desktop-embed .compact-header-brand,
body.embed-mode:not(.mobile-embed) .compact-header-brand {
  font-size: 14px !important;
  font-weight: 600 !important;
  color: var(--color-text-primary) !important;
  letter-spacing: 0.08em !important;
  white-space: nowrap !important;
}

body.desktop-embed .compact-header-right,
body.embed-mode:not(.mobile-embed) .compact-header-right {
  display: flex !important;
  align-items: center !important;
  flex-shrink: 0 !important;
}

body.desktop-embed .main-workspace,
body.embed-mode:not(.mobile-embed) .main-workspace {
  flex: 1 !important;
  display: flex !important;
  flex-direction: row !important;
  height: 100% !important;
  width: 100% !important;
  overflow: hidden !important;
  min-height: 0 !important;
}

/* Force sidebars visible - OPTIMIZED FOR 21:9 WIDESCREEN */
body.desktop-embed .products-sidebar,
body.embed-mode:not(.mobile-embed) .products-sidebar {
  display: flex !important;
  flex-direction: column !important;
  width: 14% !important;
  min-width: 200px !important;
  max-width: 320px !important;
  flex-shrink: 0 !important;
  height: 100% !important;
  background: var(--color-surface) !important;
  border-right: 1px solid var(--color-border) !important;
  overflow-y: auto !important;
  overflow-x: hidden !important;
}

/* Faces sidebar: narrow vertical column between canvas and preview */
body.desktop-embed .faces-sidebar,
body.embed-mode:not(.mobile-embed) .faces-sidebar {
  display: flex !important;
  flex-direction: column !important;
  width: 72px !important;
  min-width: 72px !important;
  max-width: 72px !important;
  flex-shrink: 0 !important;
  height: 100% !important;
  background: var(--color-surface) !important;
  border-left: 1px solid var(--color-border) !important;
  overflow: hidden !important;
}

/* Preview sidebar */
body.desktop-embed .preview-sidebar,
body.embed-mode:not(.mobile-embed) .preview-sidebar {
  display: flex !important;
  flex-direction: column !important;
  width: 18% !important;
  min-width: 220px !important;
  max-width: 320px !important;
  flex-shrink: 0 !important;
  height: 100% !important;
  background: var(--color-surface) !important;
  border-left: 1px solid var(--color-border) !important;
  overflow-y: auto !important;
  overflow-x: hidden !important;
}

body.desktop-embed .materials-sidebar,
body.embed-mode:not(.mobile-embed) .materials-sidebar {
  display: flex !important;
  flex-direction: column !important;
  width: 18% !important;
  min-width: 220px !important;
  max-width: 380px !important;
  flex-shrink: 0 !important;
  height: 100% !important;
  background: var(--color-surface) !important;
  border-left: 1px solid var(--color-border) !important;
  overflow-y: auto !important;
  overflow-x: hidden !important;
}

/* Center area: canvas + toolbar, flex column */
body.desktop-embed .center-area,
body.embed-mode:not(.mobile-embed) .center-area {
  flex: 1 !important;
  display: flex !important;
  flex-direction: column !important;
  min-width: 0 !important;
  height: 100% !important;
  overflow: hidden !important;
}

body.desktop-embed .canvas-wrapper,
body.embed-mode:not(.mobile-embed) .canvas-wrapper {
  flex: 1 !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 8px !important;
  overflow: hidden !important;
  background: var(--color-background) !important;
  min-height: 0 !important;
}

body.desktop-embed #designer-container,
body.embed-mode:not(.mobile-embed) #designer-container {
  width: auto !important;
  height: auto !important;
  max-width: 600px !important;
  max-height: 600px !important;
  min-width: 400px !important;
  min-height: 400px !important;
}

/* Toolbar spans full width under canvas area */
body.desktop-embed .toolbar-bottom,
body.embed-mode:not(.mobile-embed) .toolbar-bottom {
  flex-shrink: 0 !important;
  height: auto !important;
  min-height: 44px !important;
  max-height: 72px !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 4px 8px !important;
  background: var(--color-surface) !important;
  border-top: 1px solid var(--color-border) !important;
  overflow: visible !important;
}

/* Toolbar row: allow wrapping into 2 rows if needed */
body.desktop-embed .toolbar-row,
body.embed-mode:not(.mobile-embed) .toolbar-row {
  max-width: 100% !important;
  gap: 6px !important;
  padding-top: 4px !important;
}

/* Hide canvas helper hints in embed mode */
body.desktop-embed .canvas-wrapper::before,
body.embed-mode:not(.mobile-embed) .canvas-wrapper::before,
body.desktop-embed .canvas-wrapper::after,
body.embed-mode:not(.mobile-embed) .canvas-wrapper::after {
  display: none !important;
}

/* Compact tool buttons in embed mode */
body.desktop-embed .tool-group-label,
body.embed-mode:not(.mobile-embed) .tool-group-label {
  font-size: 9px !important;
}

body.desktop-embed .tool-btn,
body.embed-mode:not(.mobile-embed) .tool-btn {
  width: 30px !important;
  height: 30px !important;
  min-width: 30px !important;
  min-height: 30px !important;
}

body.desktop-embed .tool-btn i,
body.embed-mode:not(.mobile-embed) .tool-btn i {
  width: 15px !important;
  height: 15px !important;
}

/* Compact product items in embed mode - 2 column grid */
body.desktop-embed .product-item,
body.embed-mode:not(.mobile-embed) .product-item {
  margin-bottom: 6px !important;
  padding: 2px !important;
}

body.desktop-embed .product-item img,
body.embed-mode:not(.mobile-embed) .product-item img {
  aspect-ratio: 1 !important;
  border-radius: 4px !important;
}

/* Hide all rec badges/tags in embed mode */
body.desktop-embed .rec-badge,
body.embed-mode:not(.mobile-embed) .rec-badge {
  display: none !important;
}

/* Compact sidebar headers in embed mode */
body.desktop-embed .sidebar-header,
body.embed-mode:not(.mobile-embed) .sidebar-header {
  height: 36px !important;
  min-height: 36px !important;
  padding: 0 10px !important;
}

body.desktop-embed .sidebar-title,
body.embed-mode:not(.mobile-embed) .sidebar-title {
  font-size: 10px !important;
}

body.desktop-embed .sidebar-actions .icon-btn,
body.embed-mode:not(.mobile-embed) .sidebar-actions .icon-btn {
  width: 26px !important;
  height: 26px !important;
}

body.desktop-embed .sidebar-actions .icon-btn i,
body.embed-mode:not(.mobile-embed) .sidebar-actions .icon-btn i {
  width: 14px !important;
  height: 14px !important;
}

/* Optimize waterfall columns for narrow sidebar */
body.desktop-embed .waterfall-column,
body.embed-mode:not(.mobile-embed) .waterfall-column {
  padding: 0 3px !important;
}

body.desktop-embed .waterfall-container,
body.embed-mode:not(.mobile-embed) .waterfall-container {
  gap: 4px !important;
}

/* Compact grid padding */
body.desktop-embed .products-grid,
body.embed-mode:not(.mobile-embed) .products-grid {
  padding: 8px !important;
}

body.desktop-embed .materials-grid,
body.embed-mode:not(.mobile-embed) .materials-grid {
  padding: 8px !important;
}

/* Optimize materials grid for 220px sidebar */
body.desktop-embed .material-item,
body.embed-mode:not(.mobile-embed) .material-item {
  margin-bottom: 4px !important;
  border-radius: 6px !important;
}

body.desktop-embed .material-item img,
body.embed-mode:not(.mobile-embed) .material-item img {
  border-radius: 4px !important;
}

/* Hide rec badges in materials sidebar too */
body.desktop-embed .materials-sidebar .rec-badge,
body.embed-mode:not(.mobile-embed) .materials-sidebar .rec-badge {
  display: none !important;
}

/* Hide product labels/tags in embed mode to save space (products sidebar only) */
body.desktop-embed .products-sidebar .product-label,
body.desktop-embed .products-sidebar .product-tag,
body.desktop-embed .products-sidebar .product-name,
body.embed-mode:not(.mobile-embed) .products-sidebar .product-label,
body.embed-mode:not(.mobile-embed) .products-sidebar .product-tag,
body.embed-mode:not(.mobile-embed) .products-sidebar .product-name {
  display: none !important;
}

/* Compact preview sidebar in embed mode */
body.desktop-embed .preview-sidebar .preview-container,
body.embed-mode:not(.mobile-embed) .preview-sidebar .preview-container {
  padding: 8px !important;
}

/* Keep preview square and clipped in embed mode so SDK output cannot overflow */
body.desktop-embed .preview-sidebar .preview-box,
body.embed-mode:not(.mobile-embed) .preview-sidebar .preview-box {
  aspect-ratio: 1 !important;
  min-height: 0 !important;
  max-height: none !important;
  overflow: hidden !important;
}

body.desktop-embed .preview-sidebar #previewBoxContent,
body.embed-mode:not(.mobile-embed) .preview-sidebar #previewBoxContent {
  width: 100% !important;
  height: 100% !important;
  min-height: 0 !important;
}

body.desktop-embed .preview-sidebar #previewBoxContent img,
body.embed-mode:not(.mobile-embed) .preview-sidebar #previewBoxContent img {
  max-width: 100% !important;
  max-height: 100% !important;
  width: auto !important;
  height: auto !important;
  object-fit: contain !important;
}

body.desktop-embed .preview-sidebar .preview-info,
body.embed-mode:not(.mobile-embed) .preview-sidebar .preview-info {
  padding: 8px !important;
  border-bottom: none !important;
}

body.desktop-embed .preview-sidebar .product-name,
body.embed-mode:not(.mobile-embed) .preview-sidebar .product-name {
  font-size: 12px !important;
  line-height: 1.3 !important;
  display: -webkit-box !important;
  -webkit-line-clamp: 2 !important;
  -webkit-box-orient: vertical !important;
  overflow: hidden !important;
}

/* Hide product description in embed mode */
body.desktop-embed .preview-sidebar .product-description,
body.embed-mode:not(.mobile-embed) .preview-sidebar .product-description {
  display: none !important;
}

body.desktop-embed .preview-sidebar .variant-section,
body.embed-mode:not(.mobile-embed) .preview-sidebar .variant-section {
  padding: 6px 8px !important;
  border-top: none !important;
  background: transparent !important;
}

body.desktop-embed .preview-sidebar .variant-group,
body.embed-mode:not(.mobile-embed) .preview-sidebar .variant-group {
  margin-bottom: 6px !important;
}

body.desktop-embed .preview-sidebar .variant-label,
body.embed-mode:not(.mobile-embed) .preview-sidebar .variant-label {
  font-size: 10px !important;
  margin-bottom: 3px !important;
}

/* Compact variant options for embed */
body.desktop-embed .preview-sidebar .variant-option,
body.embed-mode:not(.mobile-embed) .preview-sidebar .variant-option {
  padding: 3px 8px !important;
  font-size: 11px !important;
}

body.desktop-embed .preview-sidebar .variant-options,
body.embed-mode:not(.mobile-embed) .preview-sidebar .variant-options {
  gap: 4px !important;
}

body.desktop-embed .preview-sidebar .preview-actions,
body.embed-mode:not(.mobile-embed) .preview-sidebar .preview-actions {
  flex-direction: row !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 8px !important;
  margin-top: 8px !important;
}

body.desktop-embed .preview-sidebar .product-price,
body.embed-mode:not(.mobile-embed) .preview-sidebar .product-price {
  font-size: 16px !important;
}

body.desktop-embed .preview-sidebar .btn-buy-now,
body.embed-mode:not(.mobile-embed) .preview-sidebar .btn-buy-now {
  padding: 6px 12px !important;
  font-size: 12px !important;
  flex: 1 !important;
  background: var(--color-primary) !important;
  color: white !important;
  border-color: var(--color-primary) !important;
}

/* Compact placeholder text in embed */
body.desktop-embed .preview-sidebar .placeholder-text,
body.embed-mode:not(.mobile-embed) .preview-sidebar .placeholder-text {
  padding: 4px !important;
  font-size: 10px !important;
}

body.desktop-embed .preview-sidebar .preview-expand-btn,
body.embed-mode:not(.mobile-embed) .preview-sidebar .preview-expand-btn {
  width: 24px !important;
  height: 24px !important;
  top: 6px !important;
  right: 6px !important;
}

/* Override mobile styles completely */
body.desktop-embed.mobile-embed .products-sidebar,
body.desktop-embed.mobile-embed .faces-sidebar,
body.desktop-embed.mobile-embed .preview-sidebar {
  display: flex !important;
}

body.desktop-embed.mobile-embed .faces-sidebar {
  width: 72px !important;
  min-width: 72px !important;
}

body.desktop-embed.mobile-embed #designer-container {
  width: auto !important;
  height: auto !important;
  max-width: 600px !important;
  max-height: 600px !important;
}

/* ========== Tablet Mode (768px - 1024px) ========== */
/* Hide preview and faces sidebars on tablet to maximize canvas space */
body.tablet-mode .preview-sidebar {
  display: none !important;
}

body.tablet-mode .faces-sidebar {
  display: none !important;
}

/* Narrower sidebars on tablet */
body.tablet-mode .products-sidebar {
  width: 160px !important;
  min-width: 160px !important;
  max-width: 160px !important;
}

body.tablet-mode .materials-sidebar {
  width: 180px !important;
  min-width: 180px !important;
  max-width: 180px !important;
}

/* Floating preview button on tablet (replaces preview sidebar) */
body.tablet-mode .canvas-wrapper {
  position: relative !important;
}

/* ========== App Container ========== */
.app-container {
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
  position: absolute;
  inset: 0;
  overflow: hidden;
}

/* ========== Compact Header (mamamiya title bar) ========== */
.compact-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 36px;
  padding: 0 16px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.compact-header-left {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.compact-header-brand {
  font-size: 14px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.compact-header-right {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

/* ========== Faces Sidebar (vertical column) ========== */
.faces-sidebar {
  width: 72px;
  min-width: 72px;
  max-width: 72px;
  background: var(--color-surface);
  border-left: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
}

.faces-sidebar .sidebar-header {
  height: 36px;
  min-height: 36px;
  padding: 0 8px;
  justify-content: center;
}

.faces-sidebar .sidebar-title {
  font-size: 9px;
}

.faces-list-vertical {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 8px 6px;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: none;
}

.faces-list-vertical::-webkit-scrollbar {
  display: none;
}

.faces-list-vertical .face-item {
  width: 56px;
  height: 56px;
  min-height: 56px;
  flex-shrink: 0;
  border-radius: 4px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  border: 2px solid var(--color-border-light);
  opacity: 0.85;
  transition: all 0.15s ease;
}

.faces-list-vertical .face-item:hover {
  border-color: var(--color-primary);
  opacity: 1;
  transform: scale(1.05);
}

.faces-list-vertical .face-item.active {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary), 0 0 8px rgba(6, 182, 212, 0.3);
  opacity: 1;
}

.faces-list-vertical .face-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ========== Main Workspace ========== */
.main-workspace {
  flex: 1;
  display: flex;
  overflow: hidden;
  min-height: 0;
}

/* ========== Sidebar Common ========== */
.sidebar-header {
  height: 36px;
  min-height: 36px;
  padding: 0 12px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-title {
  font-size: 11px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}

.sidebar-actions {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.icon-btn {
  width: 32px;
  height: 32px;
  border: 1px solid var(--color-border);
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-primary);
  transition: border-color var(--transition-fast);
}

.icon-btn:hover {
  border-color: var(--color-primary);
}

.icon-btn.active {
  background: var(--color-primary);
  color: var(--color-surface);
  border-color: var(--color-primary);
}

.icon-btn i {
  width: 16px;
  height: 16px;
}

/* ========== Status Indicator ========== */
.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border);
  transition: background-color 0.3s ease;
}

.status-indicator.ready {
  background: var(--color-success);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.5);
}

.status-indicator.loading {
  background: var(--color-warning);
  animation: pulse 1.5s ease-in-out infinite;
}

.status-indicator.error {
  background: var(--color-error);
  box-shadow: 0 0 8px rgba(229, 62, 62, 0.5);
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* ========== Products Sidebar ========== */
.products-sidebar {
  width: 350px;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
}

.products-grid {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--spacing-lg);
  position: relative;
}

.product-item {
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  border: 1px solid transparent;
  transition:
    border-color var(--transition-fast),
    transform var(--transition-fast);
  position: relative;
  background: var(--color-surface);
  width: 100%;
  break-inside: avoid;
}

.product-item:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.product-item.active {
  border-color: var(--color-primary);
  border-width: 2px;
}

.product-item img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  background: var(--color-background);
}

.rec-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  padding: 4px 8px;
  background: var(--color-primary);
  border-radius: 0;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: white;
  z-index: 10;
  pointer-events: none;
  letter-spacing: 0.05em;
}

/* ========== Center Area ========== */
.center-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.faces-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.faces-header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  height: 100%;
}

.faces-title-section {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-shrink: 0;
}

.faces-list-section {
  flex: 1;
  display: flex;
  align-items: center;
  overflow-x: auto;
  min-width: 0;
  height: 100%;
  padding: var(--spacing-sm) 0;
}

.faces-list {
  display: flex;
  gap: 10px;
  min-width: min-content;
  align-items: center;
  height: 100%;
}

.face-item {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border-radius: 0;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid var(--color-border);
  transition:
    border-color var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
  position: relative;
  opacity: 0.7;
}

.face-item:hover {
  border-color: var(--color-primary);
  transform: scale(1.05);
  opacity: 0.9;
}

.face-item.active {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
  opacity: 1;
}

.face-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ========== Canvas Wrapper ========== */
.canvas-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  overflow: hidden;
  min-height: 0;
  background: var(--color-surface);
  position: relative;
}

/* Canvas Helper Hints */
.canvas-wrapper::before {
  content: 'Drag to move • Scroll to zoom • Double-click to edit text';
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  color: var(--color-primary);
  background: rgba(255, 255, 255, 0.05);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  pointer-events: none;
  z-index: 1;
  letter-spacing: 0.02em;
}

.canvas-wrapper::after {
  content: 'Shadow area: Extend background to red line • Non-shadow: Keep design inside red line';
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 10px;
  color: #ef4444;
  background: rgba(239, 68, 68, 0.05);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  pointer-events: none;
  z-index: 1;
  letter-spacing: 0.02em;
  max-width: 90%;
  text-align: center;
}

/* Size Requirement Notice */
.size-requirement-notice {
  width: 100%;
  max-width: 600px;
  margin-bottom: 16px;
  padding: 12px 16px;
  background: rgba(6, 182, 212, 0.15);
  border: 1px solid #3b82f6;
  border-radius: var(--radius-sm);
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.notice-content {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #1e40af;
}

.notice-content i {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.notice-text {
  flex: 1;
  font-size: 13px;
  line-height: 1.5;
}

.notice-text strong {
  font-weight: 600;
  display: block;
  margin-bottom: 2px;
}

#designer-container {
  width: min(420px, calc(100% - 48px));
  height: min(420px, calc(100% - 48px));
  max-width: 100%;
  max-height: 100%;
  aspect-ratio: 1;
  border: 2px dashed #ef4444;
  position: relative;
  box-shadow: 0 0 0 8px rgba(255, 255, 255, 0.03);
}

/* Canvas Corner Labels */
#designer-container::before,
#designer-container::after {
  position: absolute;
  font-size: 9px;
  color: var(--color-primary);
  background: var(--color-surface);
  padding: 2px 6px;
  letter-spacing: 0.05em;
  font-weight: var(--font-weight-semibold);
  z-index: 1;
  pointer-events: none;
}

#designer-container::before {
  content: 'CUT LINE (Red Dashed)';
  top: -20px;
  left: 0;
  color: #ef4444;
}

#designer-container::after {
  content: 'Undesigned area will be white';
  bottom: -20px;
  right: 0;
  font-weight: var(--font-weight-normal);
  color: var(--color-text-secondary);
}

/* ========== Bottom Toolbar ========== */
.toolbar-bottom {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-lg);
  flex-shrink: 0;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.toolbar-row {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  max-width: min(520px, 100%);
  padding-top: 14px;
  position: relative;
}

.toolbar-row + .toolbar-row {
  margin-top: 8px;
  padding-top: 14px;
  border-top: none;
}

.tool-group {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 0 4px;
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.tool-group + .tool-group {
  border-left: 1px solid var(--color-border);
}

.tool-group-label {
  position: absolute;
  top: -11px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 8px;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  pointer-events: none;
  font-weight: var(--font-weight-semibold);
}

.tool-btn {
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 0;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast);
  color: var(--color-text-primary);
  flex-shrink: 0;
  position: relative;
}

.tool-btn i,
.tool-btn svg {
  width: 16px;
  height: 16px;
}

.tool-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-primary);
}

.tool-btn:active {
  transform: scale(0.95);
}

.tool-btn.primary {
  background: var(--color-primary);
  color: var(--color-surface);
  padding: 0 8px;
  width: auto;
  gap: 4px;
}

.tool-btn.primary:hover {
  background: #0891b2;
}

.tool-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.tool-btn.loading {
  pointer-events: none;
  opacity: 0.6;
}

.tool-btn.loading i {
  animation: spin 1s linear infinite;
}

/* ========== Materials Sidebar ========== */
.materials-sidebar {
  width: 350px;
  background: var(--color-surface);
  border-left: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
}

.materials-grid {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--spacing-lg);
  position: relative;
}

.waterfall-container {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.waterfall-column {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.material-item {
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  border: 1px solid transparent;
  transition:
    border-color var(--transition-fast),
    transform var(--transition-fast);
  position: relative;
  background: var(--color-surface);
  width: 100%;
  break-inside: avoid;
}

.material-item:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.material-item img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  background: var(--color-background);
}

.upload-item {
  background: var(--color-background);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  font-size: 20px;
  border: 1px solid var(--color-border);
}

.loading-indicator {
  text-align: center;
  padding: 20px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
}

.loading-spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  background-image: url('data:image/svg+xml;base64,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');
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}

/* ========== Preview Sidebar ========== */
.preview-sidebar {
  width: 360px;
  background: var(--color-surface);
  border-left: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  flex-shrink: 0;
}

.preview-container {
  padding: var(--spacing-lg) 0 var(--spacing-xl) 0;
  flex-shrink: 0;
}

.preview-box {
  width: 100%;
  aspect-ratio: 1;
  background: var(--color-background);
  border-radius: 0;
  overflow: hidden;
  position: relative;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
}

#previewBoxContent {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

#previewBoxContent img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}

.preview-expand-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  border-radius: 0;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid var(--color-border);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition-fast);
}

.preview-expand-btn:hover {
  border-color: var(--color-primary);
}

.preview-info {
  padding: var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.product-name {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.product-description {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: var(--spacing-sm);
  line-height: 1.5;
}

.preview-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--spacing-lg);
  gap: var(--spacing-lg);
}

.product-price {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.btn-buy-now {
  padding: var(--spacing-lg) var(--spacing-xl);
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  border-radius: 0;
  font-size: 15px;
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast);
  flex-shrink: 0;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.btn-buy-now:hover {
  background: var(--color-primary);
  color: var(--color-surface);
}

.btn-buy-now:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ========== Variant Section ========== */
.variant-section {
  padding: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
  background: var(--color-surface);
}

.variant-group {
  margin-bottom: 20px;
}

.variant-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.variant-options {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.variant-option {
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 1px solid var(--color-border);
  border-radius: 0;
  font-size: var(--font-size-base);
  cursor: pointer;
  transition:
    border-color var(--transition-fast),
    color var(--transition-fast);
  background: transparent;
  color: var(--color-text-primary);
}

.variant-option:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.variant-option.active {
  border-color: var(--color-primary);
  border-width: 2px;
  color: var(--color-primary);
}

.placeholder-text {
  text-align: center;
  color: var(--color-text-secondary);
  padding: var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
}

/* ========== Preview Modal ========== */
.preview-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  padding: 40px;
}

.preview-modal.active {
  display: flex;
}

.preview-modal-content {
  position: relative;
  width: 90vw;
  max-width: 1400px;
  height: 85vh;
  background: var(--color-surface);
  border-radius: 0;
  overflow: hidden;
  display: flex;
  flex-direction: row;
  gap: 0;
}

.preview-modal-canvas {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--color-background);
  border-right: 1px solid var(--color-border);
  min-width: 0;
}

.preview-modal-canvas-header {
  padding: 20px var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  flex-shrink: 0;
}

.preview-modal-canvas-body {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  overflow: hidden;
}

.preview-modal-canvas-content {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-modal-canvas-content > div {
  max-width: 100%;
  max-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-modal-preview {
  width: 500px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
}

.preview-modal-header {
  padding: 20px var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  background: var(--color-surface);
}

.preview-modal-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
}

.preview-modal-close {
  width: 32px;
  height: 32px;
  border: 1px solid var(--color-border);
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition-fast);
  color: var(--color-text-primary);
}

.preview-modal-close:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.preview-modal-body {
  flex: 1;
  overflow: auto;
  padding: var(--spacing-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-background);
}

.preview-modal-image {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

/* ========== Favorites Feature ========== */
.fav-toggle-btn {
  position: absolute;
  top: 50%;
  right: 8px;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(4px);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  transition: all 0.2s ease;
  z-index: 10;
  box-shadow: var(--shadow-sm);
  opacity: 0;
  pointer-events: none;
}

.material-item:hover .fav-toggle-btn {
  opacity: 1;
  pointer-events: auto;
}

.fav-toggle-btn.active {
  opacity: 1;
  pointer-events: auto;
  background: var(--color-error);
  color: var(--color-surface);
}

.fav-toggle-btn:hover {
  background: rgba(255, 255, 255, 1);
  color: var(--color-error);
  transform: translateY(-50%) scale(1.1);
}

.fav-toggle-btn.active:hover {
  background: #c53030;
}

.fav-badge {
  position: absolute;
  top: 50%;
  right: 8px;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 50%;
  background: var(--color-error);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-surface);
  transition: all 0.2s ease;
  z-index: 10;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  opacity: 0;
  pointer-events: none;
}

.favorite-item:hover .fav-badge {
  opacity: 1;
  pointer-events: auto;
}

.fav-badge:hover {
  background: #c53030;
  transform: translateY(-50%) scale(1.1);
}

#favoritesToggleBtn.active {
  background: var(--color-primary);
  color: var(--color-surface);
  border-color: var(--color-primary);
}

#galleryToggleBtn.active {
  background: var(--color-primary);
  color: var(--color-surface);
  border-color: var(--color-primary);
}

.favorite-item {
  position: relative;
}

/* ========== Search Modal ========== */
.search-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: none;
  align-items: flex-start;
  justify-content: center;
  z-index: 10000;
  padding-top: 100px;
}

.search-modal.active {
  display: flex;
}

.search-modal-content {
  width: 90%;
  max-width: 600px;
  background: var(--color-surface);
  border-radius: 0;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  max-height: 70vh;
  display: flex;
  flex-direction: column;
}

.search-modal-header {
  display: flex;
  align-items: center;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  gap: var(--spacing-md);
}

.search-modal-header input {
  flex: 1;
  padding: var(--spacing-md) var(--spacing-lg);
  border: 1px solid var(--color-border);
  font-size: var(--font-size-lg);
  outline: none;
  transition: border-color var(--transition-fast);
}

.search-modal-header input:focus {
  border-color: var(--color-primary);
}

.search-close-btn {
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-primary);
  transition: border-color var(--transition-fast);
}

.search-close-btn:hover {
  border-color: var(--color-primary);
}

.search-results {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-sm);
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition:
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

.search-result-item:hover {
  border-color: var(--color-primary);
  background: var(--color-background);
}

.search-result-item img {
  width: 60px;
  height: 60px;
  object-fit: cover;
  border: 1px solid var(--color-border);
}

.search-result-item.art-item img {
  width: 80px;
  height: 80px;
}

.search-result-info {
  flex: 1;
  min-width: 0;
}

.search-result-name {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search-result-price {
  font-size: var(--font-size-base);
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
  margin-top: 4px;
}

/* ========== Skeleton Loading ========== */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-background) 25%,
    var(--color-border) 50%,
    var(--color-background) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
}

@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.skeleton-product,
.skeleton-material {
  width: 100%;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.skeleton-image {
  width: 100%;
  aspect-ratio: 3/4;
  background: linear-gradient(
    90deg,
    var(--color-background) 25%,
    var(--color-border) 50%,
    var(--color-background) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
}

.skeleton-text {
  height: 16px;
  margin: var(--spacing-md);
  background: linear-gradient(
    90deg,
    var(--color-background) 25%,
    var(--color-border) 50%,
    var(--color-background) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
}

/* ========== Scrollbar ========== */
::-webkit-scrollbar {
  width: 4px;
  height: 4px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 0;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* ========== Responsive: Large Desktop ========== */
@media (min-width: 1400px) {
  .products-sidebar,
  .materials-sidebar {
    width: 380px;
  }
  .preview-sidebar {
    width: 400px;
  }
  #designer-container {
    width: min(480px, calc(100% - 48px));
    height: min(480px, calc(100% - 48px));
  }
  .canvas-wrapper {
    padding: var(--spacing-2xl);
  }
}

/* ========== Responsive: Desktop ========== */
@media (max-width: 1200px) {
  #designer-container {
    width: min(380px, calc(100% - 32px));
    height: min(380px, calc(100% - 32px));
  }
  .preview-modal-content {
    flex-direction: column;
    width: 95vw;
    height: 90vh;
  }
  .preview-modal-canvas {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }
  .preview-modal-preview {
    width: 100%;
    max-height: 50%;
  }
}

/* ========== Responsive: Tablet ========== */
@media (min-width: 768px) and (max-width: 1023px) {
  .products-sidebar,
  .materials-sidebar {
    width: 260px;
  }
  .preview-sidebar {
    width: 300px;
  }
  #designer-container {
    width: min(380px, calc(100% - 32px));
    height: min(380px, calc(100% - 32px));
  }
  .canvas-wrapper {
    padding: 20px;
  }
  .toolbar-bottom {
    padding: 6px var(--spacing-sm);
  }
  .tool-group {
    padding: 0 4px;
    gap: 2px;
  }
  .tool-btn {
    width: 38px;
    height: 38px;
  }
  .sidebar-header {
    height: 60px;
    padding: 0 var(--spacing-md);
  }
  .face-item {
    width: 44px;
    height: 44px;
  }
}

/* ========== Responsive: Small Tablet ========== */
@media (min-width: 640px) and (max-width: 767px) {
  .products-sidebar,
  .materials-sidebar,
  .preview-sidebar {
    width: 240px;
  }
  #designer-container {
    width: min(360px, calc(100% - 24px));
    height: min(360px, calc(100% - 24px));
  }
  .canvas-wrapper {
    padding: var(--spacing-lg);
  }
  .tool-btn {
    width: 40px;
    height: 40px;
  }
  .toolbar-row {
    gap: 2px;
  }
  .tool-group {
    padding: 0 4px;
  }
}

@media (max-width: 900px) {
  .canvas-wrapper {
    padding: var(--spacing-lg);
  }
  #designer-container {
    width: min(340px, calc(100% - 24px));
    height: min(340px, calc(100% - 24px));
  }
}

/* ========== Accessibility ========== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media (prefers-contrast: high) {
  .tool-btn,
  .product-item,
  .material-item,
  .face-item {
    border-width: 2px;
  }
  .tool-btn:hover,
  .product-item:hover,
  .material-item:hover {
    border-width: 3px;
  }
}

@media print {
  .products-sidebar,
  .materials-sidebar,
  .toolbar-bottom,
  .top-bar {
    display: none !important;
  }
  .canvas-wrapper {
    padding: 0;
  }
  #designer-container {
    border: none;
  }
}

/* ========== Copyright Modal ========== */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  padding: 20px;
}

.modal-content {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.modal-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.modal-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.modal-close {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: var(--color-text-primary);
}

.modal-body {
  padding: var(--spacing-lg);
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
  flex-shrink: 0;
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  background: var(--color-surface);
  transition: border-color var(--transition-fast);
}

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

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

.btn {
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  transition: all var(--transition-fast);
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background: #000;
}

.btn-secondary {
  background: transparent;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-background);
  color: var(--color-text-primary);
}