/* ==========================================================================
   Components: Cards, Inputs, Material Selectors, Sliders, Badges, Tables
   ========================================================================== */

/* ---------------------------------------------------------
   Header & Navigation Components
   --------------------------------------------------------- */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-card);
  position: sticky;
  top: 0;
  z-index: 100;
  gap: 16px;
  flex-wrap: wrap;
}

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

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 22px;
  box-shadow: var(--shadow-glow-cyan);
  flex-shrink: 0;
}

.brand-title {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: var(--leading-tight);
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtitle {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  font-weight: 400;
  line-height: var(--leading-normal);
}

/* Header Controls Group */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* Cloudflare D1 Status Badge */
.cloud-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  cursor: pointer;
}

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

.cloud-status-badge.cloud-online {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border-color: rgba(52, 211, 153, 0.35);
}
.cloud-status-badge.cloud-online .status-dot {
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
}

.cloud-status-badge.cloud-local {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border-color: rgba(251, 191, 36, 0.35);
}
.cloud-status-badge.cloud-local .status-dot {
  background: #f59e0b;
}

.cloud-status-badge.cloud-syncing {
  background: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
  border-color: rgba(56, 189, 248, 0.35);
}
.cloud-status-badge.cloud-syncing .status-dot {
  background: #38bdf8;
  animation: pulseSync 1s infinite alternate;
}

@keyframes pulseSync {
  from { opacity: 0.4; transform: scale(0.8); }
  to { opacity: 1; transform: scale(1.2); }
}

/* ---------------------------------------------------------
   Segmented Controls & Toggle Switchers
   --------------------------------------------------------- */
.mode-toggle-group {
  display: flex;
  background: var(--bg-input);
  padding: 4px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-card);
  position: relative;
}

.mode-toggle-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  min-height: 40px;
}

.mode-toggle-btn.active {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: var(--shadow-glow-cyan);
}

.mode-toggle-btn:hover:not(.active) {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

/* Unit Switcher */
.unit-switcher {
  display: flex;
  background: var(--bg-input);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-card);
  padding: 2px;
}

.unit-btn {
  padding: 6px 12px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 36px;
  min-width: 44px;
}

.unit-btn.active {
  background: var(--bg-card-active);
  color: var(--accent-primary);
  border: 1px solid var(--border-card);
}

/* Theme Switcher */
.theme-selector {
  display: flex;
  gap: 4px;
  background: var(--bg-input);
  padding: 3px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-card);
}

.theme-btn {
  border: none;
  background: transparent;
  font-size: 1.1rem;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  color: var(--text-secondary);
}

.theme-btn:hover {
  background: rgba(255, 255, 255, 0.08);
}

.theme-btn.active {
  background: var(--bg-card-active);
  border: 1px solid var(--border-card);
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}

/* ---------------------------------------------------------
   Preset Quick-Chips Bar
   --------------------------------------------------------- */
.preset-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: rgba(8, 22, 43, 0.6);
  border-bottom: 1px solid var(--border-subtle);
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: thin;
}

.preset-label {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.preset-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 38px;
}

.preset-chip:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--border-focus);
  transform: translateY(-1px);
}

.preset-chip.active {
  background: var(--badge-bg);
  border-color: var(--border-focus);
  color: var(--accent-primary);
  font-weight: 600;
  box-shadow: 0 0 12px var(--accent-glow);
}

/* ---------------------------------------------------------
   Cards & Sections
   --------------------------------------------------------- */
.panel-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.panel-card:hover {
  border-color: rgba(56, 189, 248, 0.35);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

.card-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--text-primary);
  line-height: var(--leading-snug);
}

.card-title-icon {
  font-size: 1.2rem;
}

.badge-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  background: var(--accent-gradient);
  color: #fff;
  font-size: var(--font-size-2xs);
  font-weight: 700;
}

/* ---------------------------------------------------------
   Form Controls, Inputs, Steppers & Sliders
   --------------------------------------------------------- */
.form-group {
  margin-bottom: var(--space-md);
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
  line-height: var(--leading-normal);
}

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  font-weight: 400;
}

.input-with-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-input);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 4px 6px;
  transition: border-color var(--transition-fast);
}

.input-with-controls:focus-within {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

.stepper-btn {
  width: 38px;
  height: 38px;
  min-width: 38px;
  border: none;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: var(--font-size-base);
  font-weight: bold;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.stepper-btn:hover {
  background: var(--accent-primary);
  color: #fff;
}

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

.form-input-number {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-mono);
  font-size: var(--font-size-lg);
  font-weight: 700;
  text-align: center;
  color: var(--text-primary);
  padding: 6px 0;
  min-width: 60px;
}

.unit-tag {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--text-muted);
  padding: 0 8px;
  user-select: none;
}

/* Custom Range Slider */
.range-slider-wrapper {
  margin-top: 10px;
}

.range-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.1);
  outline: none;
  cursor: pointer;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-primary);
  box-shadow: 0 0 10px var(--accent-glow);
  cursor: pointer;
  transition: transform var(--transition-fast);
  border: 2px solid #ffffff;
}

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

.range-slider-ticks {
  display: flex;
  justify-content: space-between;
  margin-top: 4px;
  font-size: var(--font-size-2xs);
  color: var(--text-muted);
}

/* ---------------------------------------------------------
   Material Selector Grid & Cards
   --------------------------------------------------------- */
.material-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 10px;
}

.material-card {
  background: var(--bg-input);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
  min-height: 80px;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.material-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: transparent;
  transition: background var(--transition-fast);
}

.material-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
  transform: translateY(-2px);
}

.material-card.active {
  background: var(--bg-card-active);
  border-color: var(--border-highlight);
  box-shadow: 0 0 16px var(--accent-glow);
}

.material-card.active::before {
  background: var(--accent-primary);
}

.material-card-icon {
  font-size: 1.5rem;
}

.material-card-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--text-primary);
}

.material-card-desc {
  font-size: var(--font-size-2xs);
  color: var(--text-muted);
}

/* ---------------------------------------------------------
   Density / Spacing Option Selector (Easy Mode)
   --------------------------------------------------------- */
.density-options-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.density-option-btn {
  background: var(--bg-input);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 14px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

.density-option-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
}

.density-option-btn.active {
  background: var(--badge-bg);
  border-color: var(--border-focus);
  box-shadow: 0 0 16px var(--accent-glow);
}

.density-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--text-primary);
}

.density-desc {
  font-size: var(--font-size-2xs);
  color: var(--text-muted);
}

.density-metric {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--accent-primary);
  background: rgba(56, 189, 248, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
}

/* ---------------------------------------------------------
   Advanced Mode Custom Controls & Collapsibles
   --------------------------------------------------------- */
.advanced-section {
  display: none;
  animation: fadeIn 0.3s ease-in-out;
}

.advanced-section.visible {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.joint-type-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.joint-btn {
  background: var(--bg-input);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  padding: 10px 8px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  text-align: center;
  transition: all var(--transition-fast);
}

.joint-btn:hover {
  background: var(--bg-card-hover);
}

.joint-btn.active {
  background: var(--badge-bg);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

/* ---------------------------------------------------------
   Inline Warnings & Safety Clamping Badges
   --------------------------------------------------------- */
.alert-inline {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  margin-top: 10px;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
  line-height: var(--leading-snug);
}

.alert-inline.warning {
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: #fcd34d;
}

.alert-inline.info {
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: #7dd3fc;
}

/* ---------------------------------------------------------
   3-Second Summary Banner (Center Panel)
   --------------------------------------------------------- */
.summary-banner {
  background: var(--summary-bg);
  border: 1px solid var(--summary-border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
}

.summary-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.summary-text {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
  line-height: var(--leading-snug);
}

.summary-highlight {
  color: var(--accent-primary);
  font-weight: 700;
}

/* ---------------------------------------------------------
   Blueprint Canvas & Toolbar
   --------------------------------------------------------- */
.blueprint-wrapper {
  background: var(--bg-canvas);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  min-height: 480px;
}

.canvas-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(0, 0, 0, 0.25);
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
  gap: 10px;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-card);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: var(--font-size-xs);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 34px;
}

.tool-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--border-focus);
}

.tool-btn.active {
  background: var(--badge-bg);
  color: var(--accent-primary);
  border-color: var(--border-focus);
}

.svg-canvas-container {
  flex: 1;
  width: 100%;
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
  user-select: none;
  background-image: 
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px),
    linear-gradient(var(--grid-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-major) 1px, transparent 1px);
  background-size: 20px 20px, 20px 20px, 100px 100px, 100px 100px;
  background-position: -1px -1px, -1px -1px, -1px -1px, -1px -1px;
}

.svg-canvas-container:active {
  cursor: grabbing;
}

#blueprint-svg {
  width: 100%;
  height: 100%;
  max-height: 600px;
  transition: transform 0.05s linear;
}

/* ---------------------------------------------------------
   Cut List Table & Stats
   --------------------------------------------------------- */
.cut-list-card {
  margin-top: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: var(--shadow-sm);
}

.cut-list-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(95px, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}

.stat-box {
  background: var(--bg-input);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 8px 10px;
}

.stat-label {
  font-size: var(--font-size-2xs);
  color: var(--text-muted);
  margin-bottom: 2px;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: var(--font-size-md);
  font-weight: 700;
  color: var(--accent-primary);
  line-height: var(--leading-tight);
}

.table-responsive {
  width: 100%;
  max-height: 280px;
  overflow-y: auto;
  overflow-x: auto;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
}

.cut-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: var(--font-size-xs);
  line-height: var(--leading-normal);
}

.cut-table thead {
  position: sticky;
  top: 0;
  z-index: 2;
}

.cut-table th {
  background: var(--bg-input);
  color: var(--text-muted);
  font-weight: 600;
  padding: 8px var(--space-xs);
  border-bottom: 1px solid var(--border-card);
  white-space: nowrap;
}

.cut-table td {
  padding: 8px var(--space-xs);
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.cut-table tr:hover td {
  background: rgba(56, 189, 248, 0.06);
  color: var(--text-primary);
}

.piece-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.piece-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

/* Action Buttons Group */
.export-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--accent-gradient);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow-glow-cyan);
  transition: all var(--transition-fast);
  min-height: 44px;
}

.btn-primary:hover {
  transform: translateY(-1px);
  filter: brightness(1.1);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 44px;
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
}

/* ---------------------------------------------------------
   Interactive Tooltips & Popovers (i)
   --------------------------------------------------------- */
.info-tooltip-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
  font-size: var(--font-size-2xs);
  font-weight: bold;
  cursor: pointer;
  border: none;
  margin-left: 4px;
  transition: all var(--transition-fast);
}

.info-tooltip-btn:hover {
  background: var(--accent-primary);
  color: #fff;
}

/* Toast Notification */
.toast-notice {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-focus);
  color: var(--text-primary);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: var(--font-size-sm);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 999;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast-notice.show {
  transform: translateY(0);
  opacity: 1;
}

/* ---------------------------------------------------------
   Material Library Modal Dialog & Forms
   --------------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(4, 11, 22, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  padding: 20px;
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 860px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg), var(--shadow-glow-blue);
  transform: scale(0.95);
  transition: transform var(--transition-smooth);
  overflow: hidden;
}

.modal-backdrop.open .modal-dialog {
  transform: scale(1);
}

.modal-header {
  padding: 18px 24px;
  background: rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid var(--border-card);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
  line-height: var(--leading-snug);
}

.modal-close-btn {
  background: transparent;
  border: none;
  font-size: 1.4rem;
  color: var(--text-muted);
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 16px 24px;
  background: rgba(0, 0, 0, 0.2);
  border-top: 1px solid var(--border-card);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

/* Material Library Table */
.mat-library-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
  font-size: var(--font-size-xs);
  line-height: var(--leading-normal);
}

.mat-library-table th {
  background: var(--bg-input);
  color: var(--text-muted);
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border-card);
}

.mat-library-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.mat-library-table tr:hover td {
  background: rgba(56, 189, 248, 0.05);
}

.action-btn-sm {
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-card);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: var(--font-size-2xs);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.action-btn-sm:hover {
  background: var(--accent-primary);
  color: #fff;
  border-color: transparent;
}

.action-btn-sm.danger:hover {
  background: #ef4444;
  color: #fff;
  border-color: transparent;
}

/* ---------------------------------------------------------
   Material Assignment Pickers (Sidebar)
   --------------------------------------------------------- */
.mat-assign-group {
  background: var(--bg-input);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  margin-bottom: 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

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

.mat-assign-label {
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.mat-select-dropdown {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-primary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition-fast);
}

.mat-select-dropdown:focus {
  border-color: var(--border-focus);
}

/* ---------------------------------------------------------
   Bill of Materials (BOM) & Cost Estimator Card
   --------------------------------------------------------- */
.bom-card {
  margin-top: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: var(--shadow-sm);
}

.bom-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: var(--font-size-xs);
  line-height: var(--leading-normal);
}

.bom-table thead {
  position: sticky;
  top: 0;
  z-index: 2;
}

.bom-table th {
  background: var(--bg-input);
  color: var(--text-muted);
  font-weight: 600;
  padding: 8px var(--space-xs);
  border-bottom: 1px solid var(--border-card);
  white-space: nowrap;
}

.bom-table td {
  padding: 8px var(--space-xs);
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.bom-table tr:hover td {
  background: rgba(56, 189, 248, 0.06);
}

.bom-grand-total-row {
  background: var(--summary-bg) !important;
  font-weight: 700;
}

.bom-grand-total-row td {
  border-top: 2px solid var(--border-focus);
  border-bottom: none;
  color: var(--text-primary);
  font-size: var(--font-size-md);
}

.grand-total-badge {
  font-family: var(--font-mono);
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--accent-primary);
  text-shadow: 0 0 12px var(--accent-glow);
  line-height: var(--leading-tight);
}

.unpriced-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: #fcd34d;
  border-radius: 4px;
  font-size: var(--font-size-2xs);
  font-weight: 600;
}

.waste-tag {
  font-size: var(--font-size-2xs);
  color: var(--text-muted);
  font-family: var(--font-mono);
}