/* ===================================================================
   styles.css - MakeIt WoodCraft DIY 가구 설계 & 재료 산출 스튜디오
   =================================================================== */

@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/pretendard.css');

:root {
  --font-main: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
  
  /* Color Tokens - Deep Woodcraft Studio Theme */
  --bg-main: #0c0f14;
  --bg-surface: #141821;
  --bg-surface-elevated: #1d222e;
  --bg-surface-subtle: #252b3b;
  --border-subtle: #2e3547;
  --border-focus: #f59e0b;

  --accent-amber: #f59e0b;
  --accent-amber-hover: #d97706;
  --accent-amber-subtle: rgba(245, 158, 11, 0.12);

  --accent-emerald: #10b981;
  --accent-emerald-subtle: rgba(16, 185, 129, 0.15);

  --accent-sky: #38bdf8;
  --accent-sky-subtle: rgba(56, 189, 248, 0.15);

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

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 24px rgba(245, 158, 11, 0.25);

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

/* ================= Light Mode (밝게 모드) Theme Tokens ================= */
body.light-mode {
  --bg-main: #f1f5f9;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f8fafc;
  --bg-surface-subtle: #e2e8f0;
  --border-subtle: #cbd5e1;
  --border-focus: #d97706;

  --accent-amber: #d97706;
  --accent-amber-hover: #b45309;
  --accent-amber-subtle: rgba(217, 119, 6, 0.12);

  --accent-emerald: #059669;
  --accent-emerald-subtle: rgba(5, 150, 105, 0.12);

  --accent-sky: #0284c7;
  --accent-sky-subtle: rgba(2, 132, 199, 0.12);

  --text-main: #0f172a;
  --text-muted: #475569;
  --text-subtle: #64748b;

  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.12);
  --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.18);
  --shadow-glow: 0 0 24px rgba(217, 119, 6, 0.2);
}

/* Light mode specific element styling */
body.light-mode .header {
  background: rgba(255, 255, 255, 0.9);
  border-bottom-color: #cbd5e1;
  box-shadow: 0 1px 4px rgba(15, 23, 42, 0.06);
}

body.light-mode .brand h1 {
  color: #0f172a;
}

body.light-mode .viewport-container {
  background: #f8fafc;
  border-color: #cbd5e1;
}

body.light-mode .viewport-tabs-bar {
  background: #ffffff;
  border-color: #cbd5e1;
}

body.light-mode .view-tab-btn {
  color: #64748b;
  border-color: transparent;
}

body.light-mode .view-tab-btn:hover {
  color: #0f172a;
  background: #f1f5f9;
}

body.light-mode .view-tab-btn.active {
  color: #d97706;
  background: #fef3c7;
  border-color: rgba(217, 119, 6, 0.4);
}

body.light-mode .category-card-btn {
  background: #ffffff;
  border-color: #e2e8f0;
}

body.light-mode .category-card-btn:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
}

body.light-mode .category-card-btn.active {
  background: #fffbeb;
  border-color: #d97706;
}

body.light-mode .template-chip {
  background: #f1f5f9;
  border-color: #e2e8f0;
  color: #334155;
}

body.light-mode .template-chip:hover {
  background: #e2e8f0;
}

body.light-mode .template-chip.active {
  background: #fef3c7;
  border-color: #d97706;
  color: #92400e;
}

body.light-mode .plywood-highlight-banner {
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  border-color: #cbd5e1;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.08);
}

body.light-mode .sub-tab-item {
  color: #64748b;
}

body.light-mode .sub-tab-item.active {
  color: #d97706;
  border-bottom-color: #d97706;
}

body.light-mode .bom-table th {
  background: #f8fafc;
  color: #475569;
  border-color: #e2e8f0;
}

body.light-mode .bom-table td {
  border-color: #f1f5f9;
  color: #1e293b;
}

body.light-mode .bom-table tr:hover {
  background: #f8fafc;
}

body.light-mode .control-slider {
  background: #e2e8f0;
}

body.light-mode .value-pill {
  background: #f1f5f9;
  border-color: #cbd5e1;
  color: #0f172a;
}

body.light-mode select,
body.light-mode input[type="number"],
body.light-mode input[type="text"] {
  background: #ffffff;
  border-color: #cbd5e1;
  color: #0f172a;
}

body.light-mode .blueprint-subnav {
  background: #f1f5f9;
  border-color: #cbd5e1;
}

body.light-mode .blueprint-view-panel {
  background: #ffffff;
}

body.light-mode .cutlist-view-panel {
  background: #ffffff;
}

/* Theme Toggle Button Style */
.btn-theme-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-md);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  cursor: pointer;
  transition: var(--transition);
}

.btn-theme-toggle:hover {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
  transform: translateY(-1px);
}

.theme-icon {
  font-size: 15px;
  line-height: 1;
}

.theme-label {
  letter-spacing: -0.2px;
}

/* ================= 저장 / 불러오기 버튼 ================= */
.btn-save-design,
.btn-load-design {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-save-design {
  background: linear-gradient(135deg, #065f46, #059669);
  border: 1px solid rgba(5, 150, 105, 0.4);
  color: #ffffff;
}

.btn-save-design:hover {
  background: linear-gradient(135deg, #047857, #10b981);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(5, 150, 105, 0.4);
}

.btn-load-design {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
}

.btn-load-design:hover {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
  transform: translateY(-1px);
}

/* Light mode 버튼 조정 */
body.light-mode .btn-load-design {
  background: #ffffff;
  border-color: #cbd5e1;
  color: #475569;
}

body.light-mode .btn-load-design:hover {
  border-color: #d97706;
  color: #d97706;
}

/* ================= 모달 공통 스타일 ================= */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: modalFadeIn 0.2s ease;
}

@keyframes modalFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.modal-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 480px;
  animation: modalSlideUp 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.modal-box-wide {
  max-width: 680px;
}

@keyframes modalSlideUp {
  from { transform: translateY(24px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border-subtle);
}

.modal-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
}

.modal-close-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 18px;
  line-height: 1;
  padding: 4px;
  border-radius: 6px;
  transition: var(--transition);
}

.modal-close-btn:hover {
  background: var(--bg-surface-subtle);
  color: var(--text-main);
}

.modal-body {
  padding: 20px 24px;
}

.modal-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 18px;
  line-height: 1.6;
}

.modal-input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.modal-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.modal-input {
  width: 100%;
  padding: 10px 14px;
  font-size: 14px;
  font-family: var(--font-main);
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-main);
  outline: none;
  transition: var(--transition);
}

.modal-input:focus {
  border-color: var(--accent-amber);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.18);
}

.modal-input-hint {
  font-size: 11px;
  color: var(--text-subtle);
}

.modal-storage-info {
  font-size: 12px;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
}

.modal-search-row {
  margin-bottom: 14px;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  padding: 16px 24px;
  border-top: 1px solid var(--border-subtle);
}

/* ================= 설계 목록 카드 ================= */
.design-list-container {
  max-height: 400px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-right: 2px;
}

.design-list-container::-webkit-scrollbar {
  width: 4px;
}

.design-list-container::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: 4px;
}

.design-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
}

.design-card:hover {
  border-color: var(--accent-amber);
  background: var(--accent-amber-subtle);
}

.design-card-icon {
  font-size: 22px;
  flex-shrink: 0;
}

.design-card-info {
  flex: 1;
  min-width: 0;
}

.design-card-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.design-card-meta {
  font-size: 11px;
  color: var(--text-subtle);
  margin-top: 2px;
}

.design-card-desc {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.design-card-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.design-card-load-btn,
.design-card-delete-btn {
  padding: 5px 10px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
}

.design-card-load-btn {
  background: var(--accent-amber-subtle);
  border-color: rgba(245, 158, 11, 0.3);
  color: var(--accent-amber);
}

.design-card-load-btn:hover {
  background: var(--accent-amber);
  color: #000;
}

.design-card-delete-btn {
  background: transparent;
  border-color: var(--border-subtle);
  color: var(--text-subtle);
}

.design-card-delete-btn:hover {
  background: rgba(239, 68, 68, 0.12);
  border-color: rgba(239, 68, 68, 0.4);
  color: #ef4444;
}

.design-list-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-subtle);
}

.design-empty-icon {
  font-size: 40px;
  display: block;
  margin-bottom: 12px;
}

.design-empty-sub {
  font-size: 12px;
  margin-top: 6px;
  color: var(--text-subtle);
}

/* Toast 알림 */
.wc-toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 10px 20px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  box-shadow: var(--shadow-md);
  z-index: 99999;
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
  white-space: nowrap;
}

.wc-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.wc-toast.success { border-color: #059669; color: #059669; }
.wc-toast.error   { border-color: #ef4444; color: #ef4444; }

/* Light mode 모달 조정 */
body.light-mode .modal-box {
  background: #ffffff;
  border-color: #e2e8f0;
}

body.light-mode .modal-input {
  background: #f8fafc;
  border-color: #cbd5e1;
  color: #0f172a;
}

body.light-mode .design-card {
  background: #f8fafc;
  border-color: #e2e8f0;
}

body.light-mode .design-card:hover {
  background: #fffbeb;
  border-color: #d97706;
}



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

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

/* ================= Top Navigation Bar ================= */
.header {
  background: rgba(20, 24, 33, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 12px 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #f59e0b 0%, #b45309 100%);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.35);
}

.brand-text h1 {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.3px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-badge {
  font-size: 11px;
  font-weight: 600;
  background: var(--accent-amber-subtle);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.brand-text p {
  font-size: 12px;
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.export-main-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.ext-badge-pill {
  background: var(--accent-amber);
  color: #0c0f14;
  font-size: 11px;
  font-weight: 800;
  padding: 1px 6px;
  border-radius: var(--radius-full);
  letter-spacing: -0.2px;
}

.export-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: #141824;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: 0 14px 35px rgba(0, 0, 0, 0.75), 0 0 16px rgba(245, 158, 11, 0.2);
  min-width: 320px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  padding: 6px;
  animation: fadeIn 0.18s ease-out;
}

.export-dropdown-menu .dropdown-header {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  padding: 8px 12px 6px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 4px;
}

.export-dropdown-menu .dropdown-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-main);
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
}

.export-dropdown-menu .dropdown-item:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--border-subtle);
}

.export-dropdown-menu .dropdown-item.active {
  background: rgba(245, 158, 11, 0.14);
  border-color: rgba(245, 158, 11, 0.4);
}

.export-dropdown-menu .ext-icon {
  font-size: 20px;
  line-height: 1.2;
}

.export-dropdown-menu .ext-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.export-dropdown-menu .ext-name {
  font-size: 12px;
  font-weight: 700;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 6px;
}

.export-dropdown-menu .rec-tag {
  font-size: 9px;
  font-weight: 800;
  background: var(--accent-amber);
  color: #0c0f14;
  padding: 1px 5px;
  border-radius: 3px;
}

.export-dropdown-menu .ext-desc {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.35;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  outline: none;
  white-space: nowrap;
}

.btn-secondary {
  background: var(--bg-surface-elevated);
  border-color: var(--border-subtle);
  color: var(--text-main);
}

.btn-secondary:hover {
  background: var(--bg-surface-subtle);
  border-color: var(--text-subtle);
}

.btn-primary {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: #0c0f14;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.45);
  transform: translateY(-1px);
}

/* ================= Main App Layout ================= */
.app-container {
  display: grid;
  grid-template-columns: 350px 1fr 400px;
  gap: 16px;
  padding: 16px;
  flex: 1;
  max-width: 1920px;
  margin: 0 auto;
  width: 100%;
}

@media (max-width: 1400px) {
  .app-container {
    grid-template-columns: 320px 1fr;
  }
  .panel-right {
    grid-column: 1 / -1;
  }
}

@media (max-width: 1000px) {
  .app-container {
    display: flex;
    flex-direction: column;
  }
}

/* Common Card Panel Styles */
.card-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.card-header {
  padding: 13px 16px;
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(255, 255, 255, 0.02);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-main);
  letter-spacing: -0.2px;
}

.card-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow-y: auto;
}

/* ================= 1. Category Selector (8 Main Categories) ================= */
.category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.category-card-btn {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 10px 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  color: var(--text-muted);
  text-align: left;
}

.category-card-btn:hover {
  border-color: var(--accent-amber);
  color: var(--text-main);
  background: var(--bg-surface-subtle);
  transform: translateY(-1px);
}

.category-card-btn.active {
  border-color: var(--accent-amber);
  background: var(--accent-amber-subtle);
  color: var(--accent-amber);
  box-shadow: inset 0 0 0 1px var(--accent-amber);
}

.category-icon,
.cat-icon {
  font-size: 20px;
  line-height: 1;
  flex-shrink: 0;
}

.category-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.category-name,
.cat-name {
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.category-subtext,
.cat-subtext {
  font-size: 10px;
  color: var(--text-subtle);
}

.category-card-btn.active .category-subtext,
.category-card-btn.active .cat-subtext {
  color: rgba(245, 158, 11, 0.8);
}

/* ================= 2. Sub-Template Chip Group ================= */
.template-chip-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.template-chip {
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 9px 8px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-align: center;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.template-chip:hover {
  border-color: var(--border-focus);
  color: var(--text-main);
  background: var(--bg-surface-elevated);
}

.template-chip.active {
  border-color: var(--accent-amber);
  background: var(--accent-amber-subtle);
  color: var(--accent-amber);
  font-weight: 700;
  box-shadow: inset 0 0 0 1px var(--accent-amber);
}

.template-chip-badge,
.chip-badge {
  font-size: 10px;
  font-weight: 500;
  color: var(--text-subtle);
}

.template-chip.active .template-chip-badge,
.template-chip.active .chip-badge {
  color: rgba(245, 158, 11, 0.85);
}

/* ================= 3. Coating & Surface Finishing ================= */
.coating-control-box {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.coating-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.coating-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}

.toggle-switch-group {
  display: flex;
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 2px;
  gap: 2px;
}

.toggle-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition);
}

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

.toggle-btn.active {
  background: var(--accent-amber);
  color: #0c0f14;
  font-weight: 700;
  box-shadow: 0 2px 6px rgba(245, 158, 11, 0.35);
}

.coating-subpanel {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 4px;
}

.coating-type-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  background: var(--bg-surface-subtle);
  border-radius: var(--radius-md);
  padding: 3px;
}

.coating-type-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  padding: 6px 4px;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.coating-type-btn:hover {
  color: var(--text-main);
}

.coating-type-btn.active {
  background: var(--bg-surface-elevated);
  color: var(--accent-amber);
  box-shadow: var(--shadow-sm);
  font-weight: 700;
}

.coating-palette-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.color-chip-btn {
  background: var(--bg-surface-elevated);
  border: 2px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 8px 4px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.color-chip-btn:hover {
  border-color: var(--text-muted);
  transform: translateY(-1px);
}

.color-chip-btn.active {
  border-color: var(--accent-amber);
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.4);
}

.color-circle {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.3), 0 2px 4px rgba(0, 0, 0, 0.2);
  position: relative;
}

.color-chip-btn.active .color-circle::after {
  content: '✓';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 900;
  color: #ffffff;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
}

.color-name-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 100%;
}

.color-chip-btn.active .color-name-label {
  color: var(--accent-amber);
}

.coating-selected-info {
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--accent-amber);
  border-radius: 4px;
  padding: 8px 10px;
}

.coating-info-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-amber);
  margin-bottom: 2px;
}

.coating-info-desc {
  font-size: 10px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Form Controls & Sliders */
.control-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.control-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
}

.control-label-row strong {
  color: var(--text-main);
  font-weight: 600;
}

.control-val-badge {
  font-family: monospace;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-amber);
  background: var(--bg-surface-elevated);
  padding: 2px 8px;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
}

.range-slider {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--bg-surface-subtle);
  outline: none;
  cursor: pointer;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent-amber);
  cursor: pointer;
  box-shadow: 0 0 8px rgba(245, 158, 11, 0.5);
  transition: transform 0.1s;
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* Thickness Radio Pills */
.pill-radio-group {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.pill-radio-btn {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 8px 4px;
  font-size: 12px;
  font-weight: 600;
  text-align: center;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

.pill-radio-btn:hover {
  border-color: var(--accent-amber);
  color: var(--text-main);
}

.pill-radio-btn.active {
  background: var(--accent-amber);
  color: #0c0f14;
  border-color: var(--accent-amber);
}

/* Material Selector Dropdown & Swatch */
.material-select-box {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.select-native {
  width: 100%;
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  outline: none;
  cursor: pointer;
}

.select-native:focus {
  border-color: var(--accent-amber);
}

.material-preview-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.wood-swatch {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  flex-shrink: 0;
  box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.4);
}

.material-info-text {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ================= Center Viewport Area ================= */
.panel-center {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.viewport-tabs-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 6px 12px;
}

.view-tabs {
  display: flex;
  gap: 6px;
}

.view-tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.view-tab-btn:hover {
  color: var(--text-main);
  background: var(--bg-surface-elevated);
}

.view-tab-btn.active {
  color: #fff;
  background: var(--bg-surface-subtle);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.view-tab-btn.tab-cutlist.active {
  background: var(--accent-emerald-subtle);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.viewport-container {
  flex: 1;
  background: #14171f;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.canvas-viewport {
  width: 100%;
  height: 100%;
  display: block;
}

/* 3D Overlays (Controls, Explode Slider, Camera Tools) */
.viewport-overlay-top {
  position: absolute;
  top: 14px;
  left: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 10;
}

.dim-tag-badge {
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(8px);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-sky);
  display: flex;
  align-items: center;
  gap: 6px;
}

.viewport-overlay-bottom {
  position: absolute;
  bottom: 14px;
  left: 14px;
  right: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  pointer-events: none;
  z-index: 10;
}

.explode-controller-box {
  pointer-events: auto;
  background: rgba(20, 24, 33, 0.9);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 8px 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow-md);
}

.explode-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
}

.camera-tools {
  pointer-events: auto;
  display: flex;
  gap: 6px;
}

.cam-btn {
  background: rgba(20, 24, 33, 0.9);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.cam-btn:hover {
  background: var(--bg-surface-subtle);
  color: var(--text-main);
  border-color: var(--accent-amber);
}

/* 2D Blueprint & Cutlist Views Container */
.blueprint-view-panel,
.cutlist-view-panel {
  display: none;
  width: 100%;
  height: 100%;
  padding: 16px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow-y: auto;
}

.blueprint-subnav {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.subnav-btn {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.subnav-btn.active {
  background: var(--accent-sky-subtle);
  color: var(--accent-sky);
  border-color: rgba(56, 189, 248, 0.4);
}

/* ================= Right Panel: Plywood Calculation & BOM ================= */
.panel-right {
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow-y: auto;
  max-height: calc(100vh - 100px);
}

/* ★★★ 핵심: 1220x2440mm 합판 소요량 하이라이트 배너 ★★★ */
.plywood-highlight-banner {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(20, 24, 33, 0.95) 100%);
  border: 1.5px solid var(--accent-emerald);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.2);
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  overflow: hidden;
}

.plywood-highlight-banner::after {
  content: '1220 × 2440 mm';
  position: absolute;
  right: -10px;
  bottom: -12px;
  font-size: 32px;
  font-weight: 900;
  color: rgba(16, 185, 129, 0.05);
  pointer-events: none;
  letter-spacing: -1px;
}

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

.banner-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-emerald);
  display: flex;
  align-items: center;
  gap: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* 원판 규격 선택 및 직접 입력 컨트롤 스타일 */
.sheet-spec-control-box {
  background: rgba(12, 16, 26, 0.75);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  backdrop-filter: blur(8px);
}

.sheet-spec-control-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.sheet-size-label {
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
}

.sheet-size-select {
  flex: 1;
  background: var(--bg-surface-elevated);
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: var(--accent-emerald);
  font-size: 12px;
  font-weight: 700;
  padding: 5px 8px;
  border-radius: 4px;
  outline: none;
  cursor: pointer;
}

.sheet-size-select:focus {
  border-color: var(--accent-emerald);
  box-shadow: 0 0 6px rgba(16, 185, 129, 0.4);
}

.custom-sheet-inputs {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  background: rgba(4, 120, 87, 0.15);
  padding: 6px 8px;
  border-radius: 4px;
  border: 1px dashed rgba(16, 185, 129, 0.5);
}

.custom-sheet-field {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  color: var(--text-muted);
}

.custom-sheet-field input {
  width: 62px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 6px;
  border-radius: 4px;
  text-align: center;
}

.custom-sheet-field input:focus {
  outline: none;
  border-color: var(--accent-emerald);
  box-shadow: 0 0 4px rgba(16, 185, 129, 0.4);
}

.custom-sheet-x {
  color: var(--text-muted);
  font-size: 12px;
  font-weight: bold;
}

.btn-apply-custom-sheet {
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 700;
  background: var(--accent-emerald);
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
}

.btn-apply-custom-sheet:hover {
  background: #059669;
  transform: translateY(-1px);
}

.banner-sheet-display {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.banner-sheet-display .num {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  line-height: 1;
  text-shadow: 0 2px 10px rgba(16, 185, 129, 0.4);
}

.banner-sheet-display .unit {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-muted);
}

.banner-stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  background: rgba(0, 0, 0, 0.25);
  padding: 10px;
  border-radius: var(--radius-sm);
  text-align: center;
}

.stat-item .lbl {
  font-size: 11px;
  color: var(--text-muted);
}

.stat-item .val {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 2px;
}

.progress-bar-wrap {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.progress-bar-bg {
  width: 100%;
  height: 8px;
  background: var(--bg-surface-subtle);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #10b981 0%, #34d399 100%);
  border-radius: 4px;
  transition: width 0.3s ease;
}

/* Right Panel Tabs (BOM, Hardware, Cost, Assembly) */
.sub-tabs-nav {
  display: flex;
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(255, 255, 255, 0.02);
}

.sub-tab-item {
  flex: 1;
  padding: 10px 4px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-align: center;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}

.sub-tab-item:hover {
  color: var(--text-main);
}

.sub-tab-item.active {
  color: var(--accent-amber);
  border-bottom-color: var(--accent-amber);
  background: var(--accent-amber-subtle);
}

/* BOM Table */
.bom-table-wrap {
  width: 100%;
  overflow-x: auto;
}

.bom-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.bom-table th {
  background: var(--bg-surface-elevated);
  color: var(--text-muted);
  text-align: left;
  padding: 8px 10px;
  font-weight: 600;
  border-bottom: 1px solid var(--border-subtle);
}

.bom-table td {
  padding: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  vertical-align: middle;
}

.part-badge-dot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  display: inline-block;
  margin-right: 6px;
  vertical-align: middle;
}

.dim-code {
  font-family: monospace;
  font-weight: 600;
  color: var(--accent-sky);
}

/* Hardware & Supplies Checklist */
.supplies-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.supply-item-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.supply-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  font-weight: 600;
}

.supply-qty-badge {
  background: var(--accent-amber-subtle);
  color: var(--accent-amber);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
}

.supply-item-tip {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.4;
  background: rgba(0, 0, 0, 0.2);
  padding: 6px 8px;
  border-radius: 4px;
}

/* Cost Breakdown Card */
.cost-breakdown-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cost-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
}

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

.cost-total-row {
  border-top: 1px solid var(--border-subtle);
  padding-top: 12px;
  margin-top: 4px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 15px;
  font-weight: 700;
}

.cost-total-row .total-price {
  font-size: 22px;
  color: var(--accent-amber);
  font-family: monospace;
}

/* Assembly Controls & Timeline */
.assembly-control-bar {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  margin-bottom: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Assembly Mode Switcher (전체 / 서랍 단독 / 레일 부착) */
.assembly-mode-nav {
  display: flex;
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 3px;
  gap: 3px;
  margin-bottom: 4px;
}

.btn-assembly-mode {
  flex: 1;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  padding: 6px 3px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  white-space: nowrap;
}

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

.btn-assembly-mode.active {
  background: var(--accent-amber);
  color: #0c0f14;
  font-weight: 700;
  box-shadow: 0 2px 6px rgba(245, 158, 11, 0.35);
  border-color: var(--accent-amber);
}

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

.sim-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 6px;
}

.sim-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: var(--accent-amber-subtle);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.assembly-btn-group {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 6px;
}

.btn-assembly-ctrl {
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  font-size: 11px;
  font-weight: 600;
  padding: 6px 6px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.btn-assembly-ctrl:hover {
  border-color: var(--accent-amber);
  background: var(--bg-surface-elevated);
  color: var(--accent-amber);
}

.btn-assembly-ctrl.active-play {
  background: var(--accent-amber);
  color: #0c0f14;
  border-color: var(--accent-amber);
  font-weight: 700;
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.4);
}

.assembly-timeline {
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  padding-left: 18px;
}

.assembly-timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: var(--border-subtle);
}

.timeline-step {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 12px 10px 14px;
  border-radius: var(--radius-md);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.timeline-step:hover {
  border-color: var(--accent-amber);
  background: var(--bg-surface-subtle);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

.timeline-step.active-step {
  border-color: var(--accent-amber);
  background: rgba(245, 158, 11, 0.12);
  box-shadow: 0 0 14px rgba(245, 158, 11, 0.25);
  transform: translateX(4px);
}

.step-marker {
  position: absolute;
  left: -18px;
  top: 12px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #475569;
  border: 2px solid var(--bg-surface);
  transition: var(--transition);
}

.timeline-step:hover .step-marker {
  background: var(--accent-amber);
}

.timeline-step.active-step .step-marker {
  background: #f59e0b;
  box-shadow: 0 0 12px #f59e0b;
  transform: scale(1.3);
}

.step-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.timeline-step.active-step .step-title {
  color: var(--accent-amber);
}

.step-desc {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.45;
}

.step-action-tag {
  align-self: flex-start;
  font-size: 10px;
  font-weight: 600;
  color: var(--text-subtle);
  background: rgba(255, 255, 255, 0.05);
  padding: 2px 7px;
  border-radius: 4px;
  margin-top: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}

.timeline-step:hover .step-action-tag {
  color: var(--accent-amber);
  background: var(--accent-amber-subtle);
}

.timeline-step.active-step .step-action-tag {
  background: var(--accent-amber);
  color: #0c0f14;
  font-weight: 700;
}

#sec-assembly {
  max-height: calc(100vh - 240px);
  overflow-y: auto;
  padding-right: 8px;
}

/* 3D Viewport Assembly HUD Banner */
.assembly-hud-banner {
  position: absolute;
  top: 56px;
  left: 14px;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(16px);
  border: 1.5px solid var(--accent-amber);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.7), 0 0 20px rgba(245, 158, 11, 0.35);
  border-radius: var(--radius-full);
  padding: 6px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 50;
  pointer-events: auto;
  animation: slideDownFade 0.25s ease-out;
}

.hud-step-pill {
  background: var(--accent-amber);
  color: #0c0f14;
  font-size: 11px;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  letter-spacing: 0.4px;
}

.hud-step-text {
  font-size: 13px;
  font-weight: 700;
  color: #ffffff;
  white-space: nowrap;
}

.hud-step-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 14px;
  padding: 0 4px;
  line-height: 1;
  transition: var(--transition);
}

.hud-step-close:hover {
  color: var(--text-main);
}

/* ================= Cutlist Sheet Detail View ================= */
.sheet-cards-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 100%;
  align-items: center;
}

.single-sheet-wrap {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-sm);
  max-width: 760px;
  width: 100%;
}

.single-sheet-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  font-weight: 700;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 8px;
}

.sheet-canvas {
  display: block;
  border-radius: 4px;
}

/* ================= Footer ================= */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-subtle);
  background: var(--bg-surface);
}

/* ================= Print Styles (A4 도면 출력) ================= */
@media print {
  body {
    background: #fff !important;
    color: #000 !important;
  }

  .header,
  .panel-left,
  .viewport-tabs-bar,
  .viewport-overlay-top,
  .viewport-overlay-bottom,
  .sub-tabs-nav,
  .footer {
    display: none !important;
  }

  .app-container {
    display: block !important;
    padding: 0 !important;
    margin: 0 !important;
    max-width: 100% !important;
  }

  .card-panel {
    border: none !important;
    box-shadow: none !important;
    background: transparent !important;
  }

  .print-page-break {
    page-break-before: always;
  }

  .bom-table th {
    background: #f1f5f9 !important;
    color: #000 !important;
    border-bottom: 2px solid #000 !important;
  }

  .bom-table td {
    color: #000 !important;
    border-bottom: 1px solid #ccc !important;
  }

  .sheet-canvas {
    border: 1px solid #000 !important;
  }
}

/* ================= 3D Part Hover Tooltip HUD ================= */
.part-hover-hud {
  position: absolute;
  z-index: 50;
  pointer-events: none;
  background: rgba(15, 23, 42, 0.94);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(56, 189, 248, 0.4);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.6), 0 0 15px rgba(56, 189, 248, 0.2);
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 170px;
  transition: opacity 0.15s ease;
}

.part-hover-hud .hud-header {
  display: flex;
  align-items: center;
  gap: 8px;
}

.part-hover-hud .hud-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-amber);
  box-shadow: 0 0 8px var(--accent-amber);
}

.part-hover-hud .hud-title {
  font-size: 13px;
  font-weight: 700;
  color: #fff;
}

.part-hover-hud .hud-badge {
  font-size: 10px;
  font-weight: 700;
  background: rgba(245, 158, 11, 0.2);
  color: var(--accent-amber);
  padding: 1px 6px;
  border-radius: 4px;
  margin-left: auto;
}

.part-hover-hud .hud-dim {
  font-size: 15px;
  font-weight: 700;
  font-family: monospace;
  color: var(--accent-sky);
  letter-spacing: -0.3px;
}

.part-hover-hud .hud-tip {
  font-size: 10px;
  color: var(--text-subtle);
  margin-top: 2px;
}

/* BOM Table Row Active Glow on 3D Selection */
.bom-table tr.highlighted-part-row {
  background: rgba(245, 158, 11, 0.22) !important;
  outline: 1px solid var(--accent-amber);
  transition: background 0.3s ease;
}

.bom-table tr {
  cursor: pointer;
  transition: background 0.15s ease;
}

.bom-table tr:hover {
  background: rgba(255, 255, 255, 0.04);
}

/* ==========================================================================
   A4 Blueprint Print Preview Modal & @media print Styles
   ========================================================================== */

/* Modal Backdrop */
.print-modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(10, 13, 20, 0.88);
  backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.2s ease-out;
}

.print-modal-container {
  background: #0f172a;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8), 0 0 30px rgba(56, 189, 248, 0.15);
  width: 100%;
  max-width: 1140px;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.print-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  background: #1e293b;
  border-bottom: 1px solid var(--border-subtle);
}

.print-modal-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.print-modal-title .p-icon {
  font-size: 24px;
}

.print-modal-title h3 {
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
  margin: 0;
}

.print-modal-title p {
  font-size: 12px;
  color: var(--text-muted);
  margin: 2px 0 0;
}

.print-modal-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.print-sheet-viewport {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  background: #090d16;
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

/* Realistic White A4 Sheet */
.print-a4-sheet {
  background: #ffffff;
  color: #0f172a;
  width: 100%;
  max-width: 1020px;
  min-height: 680px;
  padding: 24px 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Pretendard", sans-serif;
  box-sizing: border-box;
}

/* Sheet Header Title Block (표제란) */
.sheet-title-block {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  border: 2px solid #0f172a;
  padding: 10px 16px;
  background: #f8fafc;
  gap: 16px;
}

.sheet-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  border-right: 2px solid #cbd5e1;
  padding-right: 18px;
  min-width: 200px;
}

.sheet-brand .sb-icon {
  font-size: 28px;
}

.sb-name {
  font-size: 15px;
  font-weight: 800;
  color: #0f172a;
  letter-spacing: -0.3px;
}

.sb-sub {
  font-size: 11px;
  font-weight: 600;
  color: #64748b;
}

.sheet-meta-grid {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px 14px;
}

.sm-item {
  display: flex;
  flex-direction: column;
  font-size: 11px;
}

.sm-lbl {
  color: #64748b;
  font-size: 10px;
  font-weight: 600;
}

.sm-item strong {
  color: #0f172a;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Central Canvas Area: 제작물 완벽 중앙 정렬! */
.sheet-center-canvas-wrap {
  width: 100%;
  border: 1.5px solid #cbd5e1;
  background: #ffffff;
  border-radius: 4px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  box-sizing: border-box;
}

.canvas-center-badge {
  align-self: flex-start;
  font-size: 11px;
  font-weight: 700;
  color: #0284c7;
  background: #e0f2fe;
  padding: 2px 8px;
  border-radius: 3px;
  margin-bottom: 6px;
}

#print-sheet-canvas {
  width: 100%;
  max-width: 980px;
  height: auto;
  display: block;
  margin: 0 auto;
}

/* BOM Table in Print Sheet */
.sheet-bom-section {
  border: 1.5px solid #cbd5e1;
  border-radius: 4px;
  overflow: hidden;
}

.sheet-bom-title {
  background: #f1f5f9;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 700;
  color: #0f172a;
  border-bottom: 1.5px solid #cbd5e1;
}

.sheet-bom-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
}

.sheet-bom-table th {
  background: #f8fafc;
  color: #475569;
  padding: 6px 8px;
  font-weight: 700;
  border-bottom: 1px solid #cbd5e1;
}

.sheet-bom-table td {
  padding: 6px 8px;
  border-bottom: 1px solid #e2e8f0;
  color: #1e293b;
}

.sheet-bom-table tbody tr:nth-child(even) {
  background: #f8fafc;
}

.sheet-footer-notes {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 10px;
  color: #64748b;
  padding-top: 4px;
}

/* ==========================================================================
   @media print Rules (A4 표준 규격 인쇄)
   ========================================================================== */
@media print {
  @page {
    size: A4 landscape;
    margin: 8mm 10mm;
  }

  html, body {
    background: #ffffff !important;
    color: #000000 !important;
    width: 100% !important;
    height: auto !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  /* 화면 상의 모든 네비게이션, 사이드바, 헤더, 푸터 숨김 */
  header,
  aside,
  .viewport-container,
  .viewport-tabs,
  .assembly-hud-banner,
  .part-hover-hud,
  footer,
  .header-actions {
    display: none !important;
  }

  .print-modal-backdrop {
    display: block !important;
    position: static !important;
    width: 100% !important;
    height: auto !important;
    padding: 0 !important;
    margin: 0 !important;
    background: transparent !important;
    backdrop-filter: none !important;
  }

  .print-modal-container {
    border: none !important;
    box-shadow: none !important;
    background: transparent !important;
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  .print-modal-header {
    display: none !important;
  }

  .print-sheet-viewport {
    background: transparent !important;
    padding: 0 !important;
    margin: 0 !important;
    overflow: visible !important;
    display: block !important;
  }

  .print-a4-sheet {
    box-shadow: none !important;
    border: 2px solid #0f172a !important;
    padding: 16px 20px !important;
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 auto !important;
    page-break-inside: avoid !important;
    background: #ffffff !important;
  }

  .sheet-center-canvas-wrap {
    margin: 6px auto !important;
    padding: 6px !important;
  }

  #print-sheet-canvas {
    max-width: 100% !important;
    height: auto !important;
    display: block !important;
    margin: 0 auto !important;
  }

  .sheet-bom-table th,
  .sheet-bom-table td {
    padding: 4px 6px !important;
    font-size: 10px !important;
  }
}

/* ==========================================================================
   3D Cinematic Assembly Video Player Overlay Styles
   ========================================================================== */
.btn-cinema-action {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.25), rgba(217, 119, 6, 0.45)) !important;
  border-color: rgba(245, 158, 11, 0.6) !important;
  color: #fbbf24 !important;
  font-weight: 700 !important;
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.25);
  transition: all 0.25s ease;
}

.btn-cinema-action:hover {
  background: linear-gradient(135deg, #f59e0b, #d97706) !important;
  color: #0f172a !important;
  box-shadow: 0 0 16px rgba(245, 158, 11, 0.5);
  transform: translateY(-1px);
}

.cinematic-video-overlay {
  position: absolute;
  inset: 0;
  z-index: 60;
  pointer-events: auto;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: linear-gradient(180deg, rgba(8, 10, 15, 0.88) 0%, rgba(8, 10, 15, 0.1) 18%, rgba(8, 10, 15, 0.15) 60%, rgba(8, 10, 15, 0.95) 100%);
  animation: cinemaFadeIn 0.35s ease;
  user-select: none;
}

@keyframes cinemaFadeIn {
  from { opacity: 0; transform: scale(0.99); }
  to { opacity: 1; transform: scale(1); }
}

/* Top Cinema Header */
.cinematic-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  background: linear-gradient(180deg, rgba(12, 15, 22, 0.9), transparent);
}

.cinematic-title-area {
  display: flex;
  align-items: center;
  gap: 10px;
}

.live-rec-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #ef4444;
  box-shadow: 0 0 8px #ef4444;
  animation: pulseRec 1.2s infinite ease-in-out;
}

@keyframes pulseRec {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.85); }
}

.cinematic-badge {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1px;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(245, 158, 11, 0.2);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.4);
}

.cinematic-model-name {
  font-size: 14px;
  font-weight: 700;
  color: #f8fafc;
  letter-spacing: 0.3px;
}

.cinematic-header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.video-speed-selector {
  display: flex;
  align-items: center;
  gap: 2px;
  background: rgba(15, 23, 42, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  padding: 2px 4px;
}

.speed-label {
  font-size: 11px;
  color: #94a3b8;
  margin-right: 3px;
  font-weight: 600;
}

.btn-speed {
  background: transparent;
  border: none;
  color: #cbd5e1;
  font-size: 10.5px;
  font-weight: 700;
  padding: 3px 6px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-speed.active {
  background: #f59e0b;
  color: #0f172a;
  box-shadow: 0 1px 4px rgba(245, 158, 11, 0.4);
}

.btn-close-cinematic {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #f87171;
  font-size: 12px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-close-cinematic:hover {
  background: #ef4444;
  color: #ffffff;
  box-shadow: 0 0 10px rgba(239, 68, 68, 0.4);
}

/* Central Captions & Badges Area (모니터 화면 최하단에 고정) */
.cinematic-caption-container {
  position: fixed;
  bottom: 56px; /* 모니터 바닥 컨트롤 바 바로 위 */
  left: 0;
  right: 0;
  margin: 0 auto;
  max-width: 980px;
  width: 92%;
  z-index: 9990;
  padding: 0 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  pointer-events: none;
  animation: cinemaSlideUp 0.3s ease;
}

@keyframes cinemaSlideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.video-badges-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: center;
  pointer-events: auto;
}

.video-tool-badge {
  background: rgba(15, 23, 42, 0.92);
  border: 1px solid rgba(56, 189, 248, 0.5);
  color: #38bdf8;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 14px;
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

.badge-hardware {
  border-color: rgba(168, 85, 247, 0.5);
  color: #c084fc;
}

.video-tip-badge {
  background: rgba(16, 185, 129, 0.2);
  border: 1px solid rgba(16, 185, 129, 0.5);
  color: #34d399;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 14px;
  backdrop-filter: blur(10px);
}

.video-subtitle-card {
  width: 100%;
  background: rgba(15, 23, 42, 0.96);
  border: 1px solid rgba(245, 158, 11, 0.4);
  border-radius: 10px;
  padding: 8px 18px;
  backdrop-filter: blur(16px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.85);
  text-align: center;
  transition: all 0.3s ease;
  pointer-events: auto;
}

.subtitle-step-tag {
  font-size: 9.5px;
  font-weight: 800;
  letter-spacing: 1.2px;
  color: #f59e0b;
  margin-bottom: 2px;
}

.subtitle-main-title {
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 3px;
  letter-spacing: -0.3px;
  text-shadow: 0 1px 3px rgba(0,0,0,0.6);
}

.subtitle-description {
  font-size: 12.5px;
  line-height: 1.5;
  color: #cbd5e1;
  font-weight: 400;
  word-break: keep-all;
}

/* Bottom Cinema Controls Bar: 모니터 최하단 바닥에 고정 */
.cinematic-controls-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9995;
  background: rgba(8, 10, 16, 0.96);
  backdrop-filter: blur(16px);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.65);
  padding: 4px 24px 8px 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  animation: cinemaSlideUp 0.3s ease;
}

.video-progress-wrap {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 3px;
  cursor: pointer;
  position: relative;
  transition: height 0.2s ease;
}

.video-progress-wrap:hover {
  height: 7px;
}

.video-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #f59e0b, #fbbf24);
  border-radius: 4px;
  position: relative;
  transition: width 0.3s ease;
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.6);
}

.video-chapter-markers {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.chapter-mark {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: rgba(0, 0, 0, 0.6);
}

.cinematic-btn-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.cinematic-left-btns,
.cinematic-right-btns {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-video-ctrl {
  background: transparent;
  border: none;
  color: #f1f5f9;
  font-size: 13px;
  cursor: pointer;
  padding: 3px 6px;
  border-radius: 4px;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-video-ctrl:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #f59e0b;
  transform: scale(1.08);
}

#btn-video-play {
  background: #f59e0b;
  color: #0f172a;
  border-radius: 50%;
  width: 28px;
  height: 28px;
  padding: 0;
  font-size: 12px;
  font-weight: bold;
}

#btn-video-play:hover {
  background: #fbbf24;
  transform: scale(1.1);
  box-shadow: 0 0 12px rgba(245, 158, 11, 0.6);
}

#btn-video-play:hover {
  background: #fbbf24;
  transform: scale(1.1);
  box-shadow: 0 0 12px rgba(245, 158, 11, 0.6);
}

.video-time-display {
  font-size: 12px;
  font-family: monospace;
  color: #94a3b8;
  font-weight: 600;
}

.video-chapter-title {
  font-size: 13px;
  font-weight: 600;
  color: #e2e8f0;
  white-space: nowrap;
}