/* ═══════════════════════════════════════════════════════
   GRID HUB MINI — 3D Configurator Styles
   Aesthetic: Precision Workshop — machined dark surfaces,
   brass accent highlights, industrial typography
   ═══════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Chakra+Petch:wght@400;500;600;700&family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* ── Foundation ── */
:root {
  --cfg-font: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --cfg-font-display: 'Chakra Petch', 'Outfit', monospace;

  --cfg-bg: #0a0a0a;
  --cfg-bg-warm: #0d0c0a;
  --cfg-surface: #141312;
  --cfg-surface-2: #1c1b19;
  --cfg-surface-3: #242320;
  --cfg-surface-hover: #2a2926;
  --cfg-border: #2a2825;
  --cfg-border-subtle: #1e1d1a;
  --cfg-border-active: #e8c547;

  --cfg-text: #eae8e4;
  --cfg-text-muted: #8a8680;
  --cfg-text-dim: #5a5650;

  --cfg-accent: #e8c547;
  --cfg-accent-hover: #f0d060;
  --cfg-accent-dim: rgba(232, 197, 71, 0.12);
  --cfg-accent-glow: rgba(232, 197, 71, 0.06);

  --cfg-danger: #d94a3d;
  --cfg-success: #4a9e50;

  --cfg-radius: 8px;
  --cfg-radius-sm: 5px;
  --cfg-radius-lg: 12px;
  --cfg-transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --cfg-transition-spring: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

/* ── Grain Overlay (industrial texture) ── */
.cfg-wrapper::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 200px 200px;
}

/* ── Wrapper ── */
.cfg-wrapper {
  background: var(--cfg-bg);
  color: var(--cfg-text);
  font-family: var(--cfg-font);
  min-height: 100vh;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
}

/* ═══════════════════════════════════════════════════════
   LAYOUT — Split-screen: Viewer left, Config right
   ═══════════════════════════════════════════════════════ */

.cfg-main-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  height: 100vh;
}

/* ── 3D Viewer Panel ── */
.cfg-viewer-panel {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--cfg-bg);
  border-right: 1px solid var(--cfg-border-subtle);
}

.cfg-viewer-canvas {
  flex: 1;
  position: relative;
  min-height: 0;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 30% 40%, rgba(232, 197, 71, 0.03) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 60%, rgba(100, 90, 60, 0.02) 0%, transparent 50%),
    #1e1e22;
}

.cfg-viewer-canvas canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

/* Viewer controls bar */
.cfg-viewer-controls {
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border-top: 1px solid var(--cfg-border-subtle);
  background: var(--cfg-surface);
}

/* ── Config Panel ── */
.cfg-config-panel {
  padding: 48px 40px 140px;
  overflow-y: auto;
  background:
    linear-gradient(180deg, var(--cfg-bg-warm) 0%, var(--cfg-bg) 40%);
  scrollbar-width: thin;
  scrollbar-color: var(--cfg-border) transparent;
}

.cfg-config-panel::-webkit-scrollbar {
  width: 6px;
}

.cfg-config-panel::-webkit-scrollbar-track {
  background: transparent;
}

.cfg-config-panel::-webkit-scrollbar-thumb {
  background: var(--cfg-border);
  border-radius: 3px;
}

/* ═══════════════════════════════════════════════════════
   HEADER
   ═══════════════════════════════════════════════════════ */

.cfg-header-logo {
  display: block;
  height: 64px;
  width: auto;
  margin-bottom: 20px;
  opacity: 0.9;
  transition: opacity var(--cfg-transition);
}

.cfg-header-logo:hover {
  opacity: 1;
}

.cfg-header {
  text-align: left;
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--cfg-border-subtle);
  position: relative;
}

.cfg-header::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 80px;
  height: 2px;
  background: var(--cfg-accent);
}

.cfg-header h1 {
  font-family: var(--cfg-font-display);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--cfg-text);
  margin-bottom: 6px;
}

.cfg-header p {
  color: var(--cfg-text-muted);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.2px;
}

/* ═══════════════════════════════════════════════════════
   PROGRESS STEPS
   ═══════════════════════════════════════════════════════ */

.cfg-progress {
  display: flex;
  gap: 0;
  margin-bottom: 40px;
}

.cfg-progress-step {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  position: relative;
  cursor: pointer;
  transition: var(--cfg-transition);
  user-select: none;
}

.cfg-progress-step:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -12px;
  top: 50%;
  width: 24px;
  height: 1px;
  background: var(--cfg-border);
  transition: var(--cfg-transition);
}

.cfg-progress-step:not(:last-child).is-complete::after {
  background: var(--cfg-accent);
  box-shadow: 0 0 6px rgba(232, 197, 71, 0.3);
}

.cfg-progress-num {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--cfg-surface-2);
  border: 2px solid var(--cfg-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--cfg-font-display);
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
  transition: var(--cfg-transition);
  color: var(--cfg-text-dim);
}

.cfg-progress-step.is-active .cfg-progress-num {
  background: var(--cfg-accent);
  border-color: var(--cfg-accent);
  color: #0a0a0a;
  box-shadow: 0 0 16px rgba(232, 197, 71, 0.25);
}

.cfg-progress-step.is-complete .cfg-progress-num {
  background: var(--cfg-accent);
  border-color: var(--cfg-accent);
  color: #0a0a0a;
}

.cfg-progress-step.is-complete .cfg-progress-num::after {
  content: '\2713';
  font-size: 13px;
}

.cfg-progress-step.is-complete .cfg-progress-num span {
  display: none;
}

.cfg-progress-label {
  font-family: var(--cfg-font-display);
  font-size: 13px;
  font-weight: 500;
  color: var(--cfg-text-dim);
  letter-spacing: 0.8px;
  text-transform: uppercase;
  transition: var(--cfg-transition);
}

.cfg-progress-step.is-active .cfg-progress-label {
  color: var(--cfg-text);
}

.cfg-progress-step.is-complete .cfg-progress-label {
  color: var(--cfg-text-muted);
}

/* ═══════════════════════════════════════════════════════
   STEP PANELS
   ═══════════════════════════════════════════════════════ */

.cfg-step {
  display: none;
  animation: cfgStepIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.cfg-step.is-active {
  display: block;
}

@keyframes cfgStepIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.cfg-step-header {
  margin-bottom: 28px;
}

.cfg-step-header h2 {
  font-family: var(--cfg-font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.3px;
  margin-bottom: 4px;
}

.cfg-step-header p {
  color: var(--cfg-text-muted);
  font-size: 14px;
}

.cfg-step-header p strong {
  color: var(--cfg-accent);
  font-weight: 600;
}

/* ═══════════════════════════════════════════════════════
   LEVEL SELECTOR — Step 1
   ═══════════════════════════════════════════════════════ */

.cfg-level-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cfg-level-card {
  background: var(--cfg-surface);
  border: 1px solid var(--cfg-border);
  border-radius: var(--cfg-radius);
  padding: 16px 22px;
  cursor: pointer;
  transition: var(--cfg-transition);
  text-align: left;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  gap: 18px;
}

/* Subtle top highlight — like a machined edge catching light */
.cfg-level-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.04), transparent);
  transition: var(--cfg-transition);
}

.cfg-level-card:hover {
  border-color: var(--cfg-text-dim);
  background: var(--cfg-surface-2);
  transform: translateY(-1px);
}

.cfg-level-card:hover::before {
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
}

.cfg-level-card.is-selected {
  border-color: var(--cfg-accent);
  background:
    linear-gradient(135deg, var(--cfg-accent-glow) 0%, transparent 50%),
    var(--cfg-surface);
  box-shadow:
    0 0 0 1px var(--cfg-accent),
    0 4px 24px rgba(232, 197, 71, 0.08),
    inset 0 1px 0 rgba(232, 197, 71, 0.1);
}

.cfg-level-card.is-selected::before {
  background: linear-gradient(90deg, transparent 10%, var(--cfg-accent) 50%, transparent 90%);
  opacity: 0.5;
}

.cfg-level-card-count {
  font-family: var(--cfg-font-display);
  font-size: 32px;
  font-weight: 700;
  color: var(--cfg-text-dim);
  line-height: 1;
  width: 44px;
  text-align: center;
  flex-shrink: 0;
  transition: var(--cfg-transition);
}

.cfg-level-card-body {
  flex: 1;
  min-width: 0;
}

.cfg-level-card.is-selected .cfg-level-card-count {
  color: var(--cfg-accent);
  text-shadow: 0 0 20px rgba(232, 197, 71, 0.3);
}

.cfg-level-card-label {
  font-family: var(--cfg-font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--cfg-text);
}

.cfg-level-card-desc {
  font-size: 12px;
  color: var(--cfg-text-muted);
  margin-top: 2px;
}

.cfg-level-card-price {
  font-family: var(--cfg-font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--cfg-text-dim);
  margin-left: auto;
  flex-shrink: 0;
  transition: var(--cfg-transition);
}

.cfg-level-card.is-selected .cfg-level-card-price {
  color: var(--cfg-accent);
}

/* ── Digital Files Card ── */
.cfg-digital-separator {
  text-align: center;
  color: var(--cfg-text-dim);
  font-size: 13px;
  margin: 20px 0 16px;
  letter-spacing: 1px;
}

.cfg-digital-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  background: var(--cfg-surface);
  border: 1px solid var(--cfg-border);
  border-radius: 10px;
  cursor: pointer;
  transition: var(--cfg-transition);
}

.cfg-digital-card:hover {
  border-color: var(--cfg-accent);
  background:
    linear-gradient(135deg, var(--cfg-accent-glow) 0%, transparent 50%),
    var(--cfg-surface);
}

.cfg-digital-card-icon {
  color: var(--cfg-accent);
  flex-shrink: 0;
}

.cfg-digital-card-body {
  flex: 1;
  min-width: 0;
}

.cfg-digital-card-label {
  font-family: var(--cfg-font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--cfg-text);
}

.cfg-digital-card-desc {
  font-size: 13px;
  color: var(--cfg-text-muted);
  margin-top: 2px;
}

.cfg-digital-card-price {
  font-family: var(--cfg-font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--cfg-accent);
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════════
   TRAY & INSERT ROWS
   ═══════════════════════════════════════════════════════ */

.cfg-item-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cfg-item-row {
  background: var(--cfg-surface);
  border: 1px solid var(--cfg-border);
  border-radius: var(--cfg-radius);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: var(--cfg-transition);
}

.cfg-item-row:hover {
  background: var(--cfg-surface-2);
}

.cfg-item-row.is-included {
  border-left: 2px solid var(--cfg-accent);
}

.cfg-item-row.is-extra {
  border-left: 2px solid var(--cfg-success);
}

.cfg-item-num {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--cfg-surface-3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--cfg-font-display);
  font-size: 11px;
  font-weight: 700;
  color: var(--cfg-text-muted);
  flex-shrink: 0;
}

.cfg-item-info {
  flex: 1;
  min-width: 0;
}

.cfg-item-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--cfg-text);
}

.cfg-item-tag {
  display: inline-block;
  font-family: var(--cfg-font-display);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  padding: 2px 7px;
  border-radius: 3px;
  margin-left: 8px;
  vertical-align: middle;
}

.cfg-item-tag.included {
  background: var(--cfg-accent-dim);
  color: var(--cfg-accent);
}

.cfg-item-tag.extra {
  background: rgba(74, 158, 80, 0.12);
  color: var(--cfg-success);
}

.cfg-item-sub {
  font-size: 11px;
  color: var(--cfg-text-dim);
  margin-top: 2px;
  letter-spacing: 0.2px;
}

.cfg-item-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════════
   TOP TRAY TOGGLE
   ═══════════════════════════════════════════════════════ */

.cfg-top-tray-toggle {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  margin-bottom: 16px;
  background: var(--cfg-surface);
  border: 1px solid var(--cfg-border);
  border-radius: var(--cfg-radius);
  transition: var(--cfg-transition);
}

.cfg-top-tray-toggle:hover {
  background: var(--cfg-surface-2);
}

.cfg-toggle {
  position: relative;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

.cfg-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.cfg-toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--cfg-surface-3);
  border: 1px solid var(--cfg-border);
  border-radius: 12px;
  cursor: pointer;
  transition: var(--cfg-transition);
}

.cfg-toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  left: 2px;
  bottom: 2px;
  background: var(--cfg-text-muted);
  border-radius: 50%;
  transition: var(--cfg-transition);
}

.cfg-toggle input:checked + .cfg-toggle-slider {
  background: var(--cfg-accent-dim);
  border-color: var(--cfg-accent);
}

.cfg-toggle input:checked + .cfg-toggle-slider::before {
  transform: translateX(20px);
  background: var(--cfg-accent);
}

.cfg-toggle-text strong {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--cfg-text);
  margin-bottom: 2px;
}

.cfg-toggle-text span {
  font-size: 11px;
  color: var(--cfg-text-dim);
  line-height: 1.4;
}

/* ═══════════════════════════════════════════════════════
   SINGLE COLOR PICKER
   ═══════════════════════════════════════════════════════ */

.cfg-single-color {
  padding: 18px 20px;
  margin-bottom: 12px;
  background: var(--cfg-surface);
  border: 1px solid var(--cfg-border);
  border-radius: var(--cfg-radius);
  border-left: 2px solid var(--cfg-accent);
}

.cfg-single-color-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--cfg-text);
  margin-bottom: 10px;
}

.cfg-single-color-sub {
  font-size: 11px;
  color: var(--cfg-text-dim);
  margin-top: 8px;
}

/* ═══════════════════════════════════════════════════════
   COLOR SWATCHES
   ═══════════════════════════════════════════════════════ */

.cfg-color-swatches {
  display: flex;
  gap: 5px;
  align-items: center;
}

.cfg-swatch {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--cfg-transition-spring);
  position: relative;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.3);
}

.cfg-swatch:hover {
  transform: scale(1.2);
  z-index: 2;
}

.cfg-swatch.is-selected {
  border-color: var(--cfg-text);
  box-shadow:
    0 0 0 2px var(--cfg-bg),
    0 0 0 3px var(--cfg-text),
    inset 0 1px 2px rgba(0, 0, 0, 0.3);
  transform: scale(1.1);
}

/* Swatch tooltip */
.cfg-swatch[title]::after {
  content: attr(title);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--cfg-surface-3);
  color: var(--cfg-text);
  font-family: var(--cfg-font-display);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 3px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all 0.15s ease;
  border: 1px solid var(--cfg-border);
}

.cfg-swatch:hover[title]::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ═══════════════════════════════════════════════════════
   COLOR REFERENCE PANEL
   ═══════════════════════════════════════════════════════ */

.cfg-color-ref {
  margin-bottom: 14px;
  border: 1px solid var(--cfg-border);
  border-radius: var(--cfg-radius);
  overflow: hidden;
  background: var(--cfg-surface);
}

.cfg-color-ref-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: transparent;
  border: none;
  color: var(--cfg-text-muted);
  font-family: var(--cfg-font-display);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--cfg-transition);
}

.cfg-color-ref-toggle:hover {
  color: var(--cfg-text);
  background: var(--cfg-surface-2);
}

.cfg-color-ref-chevron {
  transition: transform 0.25s ease;
}

.cfg-color-ref.is-open .cfg-color-ref-chevron {
  transform: rotate(180deg);
}

.cfg-color-ref-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.cfg-color-ref.is-open .cfg-color-ref-panel {
  max-height: 800px;
}

.cfg-color-ref-panel img {
  display: block;
  width: 100%;
  height: auto;
  border-top: 1px solid var(--cfg-border-subtle);
}

/* ═══════════════════════════════════════════════════════
   SELECT DROPDOWNS
   ═══════════════════════════════════════════════════════ */

.cfg-select-wrap {
  position: relative;
}

.cfg-select {
  appearance: none;
  background: var(--cfg-surface-2);
  color: var(--cfg-text);
  border: 1px solid var(--cfg-border);
  border-radius: var(--cfg-radius-sm);
  padding: 7px 30px 7px 12px;
  font-family: var(--cfg-font);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  width: 100%;
  min-width: 140px;
  transition: var(--cfg-transition);
}

.cfg-select:hover {
  border-color: var(--cfg-text-dim);
}

.cfg-select:focus {
  outline: none;
  border-color: var(--cfg-accent);
  box-shadow: 0 0 0 2px var(--cfg-accent-dim);
}

.cfg-select-wrap::after {
  content: '\25BE';
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--cfg-text-dim);
  pointer-events: none;
  font-size: 11px;
}

/* ═══════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════ */

.cfg-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: var(--cfg-radius-sm);
  font-family: var(--cfg-font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  cursor: pointer;
  border: none;
  transition: var(--cfg-transition);
  white-space: nowrap;
}

.cfg-btn-primary {
  background: var(--cfg-accent);
  color: #0a0a0a;
  box-shadow: 0 2px 8px rgba(232, 197, 71, 0.15);
}

.cfg-btn-primary:hover {
  background: var(--cfg-accent-hover);
  box-shadow: 0 4px 16px rgba(232, 197, 71, 0.25);
  transform: translateY(-1px);
}

.cfg-btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 1px 4px rgba(232, 197, 71, 0.15);
}

.cfg-btn-secondary {
  background: var(--cfg-surface-2);
  color: var(--cfg-text-muted);
  border: 1px solid var(--cfg-border);
}

.cfg-btn-secondary:hover {
  background: var(--cfg-surface-3);
  color: var(--cfg-text);
  border-color: var(--cfg-text-dim);
}

.cfg-btn-sm {
  padding: 6px 14px;
  font-size: 11px;
  letter-spacing: 0.4px;
}

.cfg-btn-icon {
  width: 30px;
  height: 30px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--cfg-border);
  color: var(--cfg-text-dim);
  cursor: pointer;
  transition: var(--cfg-transition);
  font-size: 16px;
  line-height: 1;
}

.cfg-btn-icon:hover {
  background: var(--cfg-surface-hover);
  color: var(--cfg-text);
  border-color: var(--cfg-text-dim);
}

.cfg-btn-icon.danger:hover {
  color: var(--cfg-danger);
  border-color: var(--cfg-danger);
  background: rgba(217, 74, 61, 0.08);
}

/* Add tray / add insert dashed button */
.cfg-add-btn {
  background: transparent;
  border: 1px dashed var(--cfg-border);
  border-radius: var(--cfg-radius);
  padding: 12px 20px;
  color: var(--cfg-text-dim);
  cursor: pointer;
  transition: var(--cfg-transition);
  font-family: var(--cfg-font);
  font-size: 13px;
  font-weight: 500;
  width: 100%;
  text-align: center;
}

.cfg-add-btn:hover {
  border-color: var(--cfg-accent);
  color: var(--cfg-accent);
  background: var(--cfg-accent-glow);
}

.cfg-addon-heading {
  font-family: var(--cfg-font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--cfg-text);
  letter-spacing: 0.03em;
  margin: 0 0 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cfg-addon-price {
  font-family: var(--cfg-font-body);
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--cfg-text-dim);
}

/* ═══════════════════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════════════════ */

.cfg-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--cfg-border-subtle);
}

/* ═══════════════════════════════════════════════════════
   INFO BANNER
   ═══════════════════════════════════════════════════════ */

.cfg-info-banner {
  background:
    linear-gradient(135deg, var(--cfg-accent-glow) 0%, transparent 100%),
    var(--cfg-surface);
  border: 1px solid rgba(232, 197, 71, 0.12);
  border-radius: var(--cfg-radius-sm);
  padding: 10px 14px;
  margin-bottom: 16px;
  font-size: 12px;
  color: var(--cfg-accent);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.1px;
}

.cfg-info-banner svg {
  flex-shrink: 0;
  opacity: 0.8;
}

/* ═══════════════════════════════════════════════════════
   CLOSED BANNER
   ═══════════════════════════════════════════════════════ */

.cfg-closed-banner {
  background:
    linear-gradient(135deg, rgba(232, 167, 47, 0.08) 0%, transparent 100%),
    var(--cfg-surface);
  border: 1px solid rgba(232, 167, 47, 0.25);
  border-radius: var(--cfg-radius);
  padding: 14px 18px;
  margin-bottom: 24px;
  font-size: 13px;
  color: #e8a72f;
  display: flex;
  align-items: center;
  gap: 10px;
  line-height: 1.5;
}

.cfg-closed-banner svg {
  flex-shrink: 0;
  opacity: 0.9;
}

/* ═══════════════════════════════════════════════════════
   TEST MODE BADGE
   ═══════════════════════════════════════════════════════ */

.cfg-total-real {
  font-size: 0.6em;
  color: var(--cfg-text-dim);
  font-weight: 500;
  letter-spacing: 0;
}

.cfg-test-mode-badge {
  margin-top: 12px;
  padding: 10px 16px;
  background: rgba(217, 74, 61, 0.1);
  border: 1px dashed var(--cfg-danger);
  border-radius: var(--cfg-radius-sm);
  color: var(--cfg-danger);
  font-family: var(--cfg-font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  text-align: center;
}

/* ═══════════════════════════════════════════════════════
   REVIEW — Step 4
   ═══════════════════════════════════════════════════════ */

.cfg-review {
  width: 100%;
}

.cfg-review-section {
  background: var(--cfg-surface);
  border: 1px solid var(--cfg-border);
  border-radius: var(--cfg-radius);
  padding: 20px 22px;
  margin-bottom: 10px;
}

.cfg-review-section h3 {
  font-family: var(--cfg-font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--cfg-text-muted);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--cfg-border-subtle);
}

.cfg-review-line {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 7px 0;
  font-size: 13px;
}

.cfg-review-line + .cfg-review-line {
  border-top: 1px solid rgba(255, 255, 255, 0.03);
}

.cfg-review-line-label {
  color: var(--cfg-text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.cfg-review-line-value {
  font-weight: 600;
  font-family: var(--cfg-font-display);
  letter-spacing: 0.3px;
}

.cfg-review-color-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* Total box */
.cfg-review-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  background:
    linear-gradient(135deg, var(--cfg-accent-glow) 0%, transparent 50%),
    var(--cfg-surface);
  border: 1px solid var(--cfg-accent);
  border-radius: var(--cfg-radius);
  margin-top: 8px;
  box-shadow: 0 4px 24px rgba(232, 197, 71, 0.06);
}

.cfg-review-total-label {
  font-family: var(--cfg-font-display);
  font-size: 16px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.cfg-review-total-price {
  font-family: var(--cfg-font-display);
  font-size: 28px;
  font-weight: 700;
  color: var(--cfg-accent);
  text-shadow: 0 0 20px rgba(232, 197, 71, 0.15);
}

/* Checkout CTA */
.cfg-checkout-btn {
  width: 100%;
  padding: 16px;
  font-size: 15px;
  margin-top: 16px;
  border-radius: var(--cfg-radius);
  position: relative;
  overflow: hidden;
}

/* Shimmer sweep on checkout button */
.cfg-checkout-btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.15) 50%,
    transparent 100%
  );
  animation: btnShimmer 3s ease-in-out infinite;
}

@keyframes btnShimmer {
  0%, 100% { left: -100%; }
  50% { left: 100%; }
}

/* ═══════════════════════════════════════════════════════
   STICKY TOTAL BAR
   ═══════════════════════════════════════════════════════ */

.cfg-total-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 18px 32px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 24px;

  /* Glass-morphism */
  background: rgba(14, 13, 11, 0.82);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-top: 1px solid rgba(232, 197, 71, 0.1);
  box-shadow:
    0 -4px 30px rgba(0, 0, 0, 0.4),
    0 -1px 0 rgba(255, 255, 255, 0.03);
}

.cfg-total-label {
  font-family: var(--cfg-font-display);
  font-size: 14px;
  font-weight: 500;
  color: var(--cfg-text-dim);
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.cfg-total-price {
  font-family: var(--cfg-font-display);
  font-size: 28px;
  font-weight: 700;
  color: var(--cfg-accent);
  letter-spacing: -0.5px;
}

/* ═══════════════════════════════════════════════════════
   LOADING STATE
   ═══════════════════════════════════════════════════════ */

.cfg-viewer-loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: var(--cfg-bg);
  z-index: 5;
  font-family: var(--cfg-font-display);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--cfg-text-dim);
}

/* Precision spinner — rotating ring */
.cfg-spinner {
  width: 40px;
  height: 40px;
  border: 2px solid var(--cfg-border);
  border-top-color: var(--cfg-accent);
  border-radius: 50%;
  animation: cfgSpin 0.8s linear infinite;
  box-shadow: 0 0 12px rgba(232, 197, 71, 0.1);
}

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

/* ═══════════════════════════════════════════════════════
   DIMENSIONS TEXT
   ═══════════════════════════════════════════════════════ */

.cfg-dimensions-text {
  font-family: var(--cfg-font);
  font-size: 13px;
  color: var(--cfg-text-muted);
  letter-spacing: 0.3px;
  margin-top: 8px;
}

/* ═══════════════════════════════════════════════════════
   TOAST NOTIFICATIONS
   ═══════════════════════════════════════════════════════ */

.cfg-toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--cfg-surface-3);
  color: var(--cfg-text);
  font-family: var(--cfg-font);
  font-size: 13px;
  font-weight: 500;
  padding: 12px 24px;
  border-radius: var(--cfg-radius);
  border: 1px solid var(--cfg-border);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  z-index: 200;
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.cfg-toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ═══════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════ */

@media (max-width: 1024px) {
  .cfg-main-layout {
    grid-template-columns: 1fr;
    height: auto;
  }

  .cfg-viewer-panel {
    position: sticky;
    top: 0;
    height: 40vh;
    min-height: 280px;
    max-height: 400px;
    border-right: none;
    border-bottom: 1px solid var(--cfg-border-subtle);
    z-index: 10;
  }

  .cfg-config-panel {
    padding: 32px 24px 140px;
  }

  .cfg-header h1 {
    font-size: 22px;
  }
}

@media (max-width: 640px) {
  .cfg-viewer-panel {
    height: 35vh;
    min-height: 220px;
    max-height: 320px;
  }

  .cfg-config-panel {
    padding: 24px 16px 140px;
  }

  .cfg-header {
    margin-bottom: 28px;
    padding-bottom: 20px;
  }

  .cfg-header h1 {
    font-size: 19px;
  }

  .cfg-progress-label {
    display: none;
  }

  .cfg-progress-step {
    padding: 10px 12px;
  }

  .cfg-level-options {
    gap: 8px;
  }

  .cfg-level-card {
    padding: 14px 16px;
    gap: 14px;
  }

  .cfg-level-card-count {
    font-size: 26px;
    width: 36px;
  }

  .cfg-item-row {
    flex-wrap: wrap;
    gap: 10px;
    padding: 12px 14px;
  }

  .cfg-item-actions {
    width: 100%;
    padding-top: 6px;
    border-top: 1px solid var(--cfg-border-subtle);
    justify-content: space-between;
  }

  .cfg-total-bar {
    padding: 14px 16px;
    gap: 16px;
  }

  .cfg-total-price {
    font-size: 22px;
  }

  .cfg-btn {
    padding: 9px 16px;
    font-size: 12px;
  }

  .cfg-review-total-price {
    font-size: 22px;
  }

  .cfg-viewer-controls {
    padding: 8px 12px;
  }
}

/* ═══════════════════════════════════════════════════════
   REDUCED MOTION
   ═══════════════════════════════════════════════════════ */

@media (prefers-reduced-motion: reduce) {
  .cfg-step {
    animation: none;
  }

  .cfg-checkout-btn::after {
    animation: none;
  }

  * {
    transition-duration: 0.01ms !important;
  }
}