/* ==========================================================================
   UE PRO — "Pro Audio Customizer" design system
   Premium Industrialism: tonal layering, luminous gold borders, sharp geometry.
   Scoped to the /ue-pro customizer page (body.ue-studio).
   ========================================================================== */

:root {
  /* Surfaces — depth through value, not shadow */
  --ue-bg: #131313;
  --ue-surface-lowest: #0e0e0e;
  --ue-card: #161616;
  --ue-input: #0f0f0f;
  --ue-surface-high: #201f1f;
  --ue-surface-highest: #2a2a2a;

  /* Lines */
  --ue-line: #2a2a2a;
  --ue-line-soft: #1f1f1f;
  --ue-outline-variant: #4d4635;

  /* Ink */
  --ue-on-surface: #e5e2e1;
  --ue-on-surface-variant: #d0c5af;
  --ue-muted: #8e9196;

  /* Gold */
  --ue-primary: #f2ca50;
  --ue-primary-container: #d4af37;
  --ue-primary-dim: #e9c349;
  --ue-on-primary: #3c2f00;
  --ue-glow: 0 0 5px rgba(212, 175, 55, .28);
  --ue-glow-strong: 0 0 10px rgba(212, 175, 55, .35);

  --ue-error: #ffb4ab;

  /* Type */
  --ue-font-display: 'Bodoni Moda', 'Times New Roman', serif;
  --ue-font-body: 'Hanken Grotesk', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --ue-font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', monospace;

  /* Spacing — 4px baseline */
  --ue-unit: 4px;
  --ue-gutter: 16px;
  --ue-stack-sm: 8px;
  --ue-stack-md: 24px;
  --ue-stack-lg: 48px;
  --ue-margin-mobile: 20px;
  --ue-margin-desktop: 64px;

  /* Chrome metrics */
  --ue-topbar-h: 72px;
  --ue-rail-w: 300px;
  --ue-dock-h: 76px;
}

/* --------------------------------------------------------------------------
   Base
   -------------------------------------------------------------------------- */

.ue-studio *,
.ue-studio *::before,
.ue-studio *::after {
  box-sizing: border-box;
}

body.ue-studio {
  margin: 0;
  padding: 0;
  background: var(--ue-bg);
  color: var(--ue-on-surface);
  font-family: var(--ue-font-body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

.ue-studio img {
  max-width: 100%;
}

.ue-studio [hidden] {
  display: none !important;
}

.ue-studio a {
  color: inherit;
  text-decoration: none;
}

.ue-studio button {
  font-family: inherit;
  color: inherit;
}

/* Typography roles ---------------------------------------------------------- */

.ue-display {
  font-family: var(--ue-font-display);
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: .05em;
  margin: 0;
}

.ue-headline {
  font-family: var(--ue-font-display);
  font-size: 28px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: .02em;
  margin: 0;
  text-transform: uppercase;
}

.ue-label {
  font-family: var(--ue-font-mono);
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: .15em;
  text-transform: uppercase;
}

.ue-body {
  font-family: var(--ue-font-body);
  font-size: 16px;
  line-height: 1.5;
}

.ue-note {
  font-size: 13px;
  line-height: 1.6;
  color: var(--ue-muted);
}

/* Focus — gold outline, per the interactive-states rule */
.ue-studio :focus-visible {
  outline: 1px solid var(--ue-primary);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */

.ue-btn,
.ue-btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--ue-stack-sm);
  padding: 14px 28px;
  border-radius: 0;
  font-family: var(--ue-font-body);
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.ue-btn {
  background: var(--ue-primary);
  color: var(--ue-on-primary);
  border: 1px solid var(--ue-primary);
}

.ue-btn:hover {
  background: #fff;
  border-color: #fff;
  color: #111;
}

.ue-btn:disabled {
  opacity: .5;
  cursor: not-allowed;
}

.ue-btn-ghost {
  background: transparent;
  color: var(--ue-primary);
  border: 1px solid var(--ue-primary);
}

.ue-btn-ghost:hover {
  background: rgba(212, 175, 55, .1);
  box-shadow: var(--ue-glow);
}

.ue-btn-quiet {
  background: transparent;
  border: 1px solid var(--ue-line);
  color: var(--ue-on-surface-variant);
  padding: 9px 16px;
  border-radius: 0;
  font-family: var(--ue-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease;
}

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

/* --------------------------------------------------------------------------
   Top navigation — glassmorphic
   -------------------------------------------------------------------------- */

.studio-topbar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 60;
  height: var(--ue-topbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ue-stack-md);
  padding: 0 var(--ue-margin-mobile);
  background: rgba(19, 19, 19, .8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--ue-outline-variant);
}

.studio-wordmark {
  font-family: var(--ue-font-display);
  font-size: clamp(18px, 2.4vw, 30px);
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--ue-primary);
  white-space: nowrap;
}

.studio-topnav {
  display: none;
  gap: 32px;
}

.studio-topnav a {
  font-family: var(--ue-font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--ue-on-surface-variant);
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: color .3s ease, border-color .3s ease;
}

.studio-topnav a:hover,
.studio-topnav a.is-active {
  color: var(--ue-primary);
  border-bottom-color: var(--ue-primary);
}

.studio-topbar-actions {
  display: flex;
  align-items: center;
  gap: var(--ue-gutter);
}

.studio-subtotal {
  display: none;
  align-items: baseline;
  gap: var(--ue-stack-sm);
  padding: 8px 14px;
  background: var(--ue-input);
  border: 1px solid var(--ue-line);
}

.studio-subtotal-label {
  font-family: var(--ue-font-mono);
  font-size: 10px;
  letter-spacing: .15em;
  color: var(--ue-muted);
}

.studio-subtotal-value {
  font-family: var(--ue-font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--ue-primary);
}

.studio-icon-btn {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--ue-primary);
  cursor: pointer;
  transition: border-color .2s ease, background-color .2s ease;
}

.studio-icon-btn:hover {
  border-color: var(--ue-line);
  background: var(--ue-input);
}

.studio-icon-btn svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* --------------------------------------------------------------------------
   Left rail — live build detail and pricing
   -------------------------------------------------------------------------- */

.studio-rail {
  display: none;
  position: fixed;
  top: var(--ue-topbar-h);
  bottom: 0;
  left: 0;
  width: var(--ue-rail-w);
  z-index: 50;
  flex-direction: column;
  background: var(--ue-surface-lowest);
  border-right: 1px solid var(--ue-outline-variant);
}

.studio-rail-head {
  flex: 0 0 auto;
  padding: var(--ue-gutter) var(--ue-stack-md);
  border-bottom: 1px solid var(--ue-line);
}

.studio-rail-head .ue-label {
  display: block;
  color: var(--ue-primary);
}

/* Model row — the first line of the build sheet, and the model picker */
.studio-rail .model-dropdown-section {
  flex: 0 0 auto;
  border-bottom: 1px solid var(--ue-line);
}

.studio-rail .model-dropdown-container {
  display: block;
  position: relative;
}

.studio-rail .model-dropdown-select {
  min-width: 0;
  width: 100%;
  padding: var(--ue-gutter) var(--ue-stack-md);
  background: transparent;
  border: 0;
  border-left: 2px solid var(--ue-primary);
  align-items: flex-start;
  gap: var(--ue-stack-sm);
}

.studio-rail .model-dropdown-select:hover {
  background: var(--ue-surface-high);
}

.rail-item-label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
  font-family: var(--ue-font-body);
  font-size: 15px;
  letter-spacing: 0;
  color: var(--ue-on-surface);
  text-align: left;
}

.rail-item-price {
  font-family: var(--ue-font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--ue-primary);
}

.studio-rail .model-dropdown-list {
  left: var(--ue-gutter);
  right: var(--ue-gutter);
  min-width: 0;
}

/* Line items ---------------------------------------------------------------- */

.rail-lines {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.rail-line {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 3px;
  width: 100%;
  padding: 12px var(--ue-stack-md);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--ue-line-soft);
  text-align: left;
  font-family: inherit;
  color: inherit;
  transition: background-color .2s ease, box-shadow .2s ease;
}

button.rail-line {
  cursor: pointer;
}

button.rail-line:hover {
  background: var(--ue-surface-high);
  box-shadow: inset 2px 0 0 var(--ue-primary);
}

.rail-line-label {
  font-size: 14px;
  line-height: 1.35;
  color: var(--ue-on-surface);
}

.rail-line-price {
  font-family: var(--ue-font-mono);
  font-size: 12px;
  color: var(--ue-muted);
}

/* Total + preview action ---------------------------------------------------- */

.studio-rail-foot {
  flex: 0 0 auto;
  border-top: 1px solid var(--ue-outline-variant);
}

.rail-total {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--ue-gutter) var(--ue-stack-md);
  background: linear-gradient(135deg, var(--ue-primary), var(--ue-primary-container));
  color: var(--ue-on-primary);
}

/* Direct child only — the value lives inside <strong> and keeps display type */
.rail-total > span {
  font-family: var(--ue-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .15em;
  text-transform: uppercase;
}

.rail-total strong {
  font-family: var(--ue-font-display);
  font-size: 28px;
  font-weight: 700;
  line-height: 1.1;
}

/* Cart + share CTA. The rail's line items are the review step, so this is the
   only place the build is committed from on desktop. */
.rail-actions {
  display: flex;
  flex-direction: column;
  gap: var(--ue-stack-sm);
  padding: var(--ue-gutter) var(--ue-stack-md);
}

.rail-actions .ue-btn,
.rail-actions .ue-btn-ghost {
  width: 100%;
  padding-inline: var(--ue-gutter);
}

.rail-note {
  margin: 0;
  font-size: 12px;
  line-height: 1.5;
  color: var(--ue-muted);
}

.studio-rail-foot .share-panel {
  margin: 0 var(--ue-stack-md) var(--ue-gutter);
}

/* --------------------------------------------------------------------------
   Main canvas
   -------------------------------------------------------------------------- */

.studio-main {
  padding: calc(var(--ue-topbar-h) + var(--ue-stack-md)) var(--ue-margin-mobile) calc(var(--ue-dock-h) + var(--ue-stack-lg));
  max-width: 1440px;
  margin: 0 auto;
}

/* Card primitive — content layer #161616 with hairline border, sharp corners */
.studio-card {
  background: var(--ue-card);
  border: 1px solid var(--ue-line);
  border-radius: 0;
  padding: var(--ue-stack-md);
}

.studio-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ue-gutter);
  padding-bottom: var(--ue-gutter);
  margin-bottom: var(--ue-stack-md);
  border-bottom: 1px solid var(--ue-line);
}

/* Page sections ------------------------------------------------------------- */

.studio-section {
  margin-top: var(--ue-stack-lg);
  padding-top: var(--ue-stack-lg);
  border-top: 1px solid var(--ue-line);
  scroll-margin-top: calc(var(--ue-topbar-h) + 24px);
}

.studio-section > .ue-headline {
  margin-bottom: var(--ue-stack-sm);
}

.studio-section > .studio-section-desc {
  margin: 0 0 var(--ue-stack-md);
  max-width: 72ch;
  color: var(--ue-muted);
  font-size: 15px;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Model selection screen (full-bleed gate)
   -------------------------------------------------------------------------- */

.model-selection-screen {
  display: none;
}

body.model-select-active {
  overflow: hidden;
}

body.model-select-active .model-selection-screen {
  display: block;
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--ue-surface-lowest);
  overflow-y: auto;
}

body.model-select-active .studio-topbar,
body.model-select-active .studio-rail,
body.model-select-active .studio-main,
body.model-select-active .studio-dock {
  display: none;
}

.model-gate-bar {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--ue-gutter) var(--ue-margin-mobile);
  background: rgba(14, 14, 14, .85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--ue-line);
}

.model-gate-body {
  padding: var(--ue-stack-lg) var(--ue-margin-mobile) 140px;
  max-width: 1280px;
  margin: 0 auto;
}

.model-gate-hero {
  margin-bottom: var(--ue-stack-lg);
}

.model-gate-hero p {
  margin: 12px 0 0;
  color: var(--ue-on-surface-variant);
  font-size: 18px;
  line-height: 1.6;
}

.model-gate-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--ue-gutter);
  padding-bottom: var(--ue-gutter);
  border-bottom: 1px solid var(--ue-line);
  margin-bottom: var(--ue-stack-md);
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--ue-gutter);
  margin-bottom: var(--ue-stack-lg);
}

/* Selection card component */
.model-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: var(--ue-gutter);
  background: var(--ue-card);
  border: 1px solid var(--ue-line);
  border-radius: 0;
  cursor: pointer;
  text-align: left;
  transition: border-color .2s ease, box-shadow .2s ease, background-color .2s ease;
}

.model-card:hover {
  border-color: var(--ue-outline-variant);
}

.model-card.selected {
  border-color: var(--ue-primary-container);
  box-shadow: var(--ue-glow);
  background: linear-gradient(180deg, rgba(212, 175, 55, .08), rgba(212, 175, 55, 0) 70%), var(--ue-card);
}

.model-card-image-wrap {
  display: grid;
  place-items: center;
  aspect-ratio: 4 / 3;
  background: var(--ue-input);
  border: 1px solid var(--ue-line);
}

.model-card-image-wrap img {
  width: 78%;
  height: 78%;
  object-fit: contain;
}

.model-card-info {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--ue-stack-sm);
}

.model-card-info strong {
  font-family: var(--ue-font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: .02em;
}

.model-card-info span {
  font-family: var(--ue-font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ue-primary);
}

.model-detail {
  background: var(--ue-card);
  border: 1px solid var(--ue-line);
  padding: var(--ue-stack-md);
}

.model-detail p,
.model-detail li {
  color: var(--ue-on-surface-variant);
  font-size: 15px;
  line-height: 1.6;
}

.model-detail h3 {
  font-family: var(--ue-font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: .02em;
  margin: var(--ue-stack-md) 0 var(--ue-stack-sm);
  text-transform: uppercase;
}

.model-detail ul {
  margin: 0;
  padding-left: 18px;
}

.model-gate-foot {
  position: fixed;
  inset: auto 0 0 0;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ue-gutter);
  padding: var(--ue-gutter) var(--ue-margin-mobile);
  background: rgba(19, 19, 19, .9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--ue-outline-variant);
}

.model-bar-model {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.model-bar-model strong {
  font-family: var(--ue-font-display);
  font-size: 18px;
  letter-spacing: .02em;
}

.model-bar-model span {
  font-family: var(--ue-font-mono);
  font-size: 12px;
  color: var(--ue-primary);
}

/* --------------------------------------------------------------------------
   Model dropdown (in-canvas)
   -------------------------------------------------------------------------- */

.model-dropdown-container {
  display: flex;
  align-items: center;
  gap: var(--ue-gutter);
  flex-wrap: wrap;
  position: relative;
}

.dropdown-label {
  font-family: var(--ue-font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .15em;
  color: var(--ue-muted);
}

.model-dropdown-select {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ue-stack-md);
  min-width: 260px;
  padding: 12px 16px;
  background: var(--ue-input);
  border: 1px solid var(--ue-line);
  cursor: pointer;
  font-family: var(--ue-font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  transition: border-color .2s ease;
}

.model-dropdown-select:hover {
  border-color: var(--ue-primary);
}

.model-dropdown-select .arrow {
  color: var(--ue-primary);
  font-size: 10px;
}

.model-dropdown-list {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 40;
  min-width: 320px;
  max-height: 340px;
  overflow-y: auto;
  background: var(--ue-surface-lowest);
  border: 1px solid var(--ue-line);
  box-shadow: 0 12px 40px rgba(0, 0, 0, .6);
}

.model-dropdown-list.show {
  display: block;
}

.model-dropdown-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ue-gutter);
  padding: 12px 16px;
  cursor: pointer;
  border-bottom: 1px solid var(--ue-line-soft);
  transition: background-color .15s ease, color .15s ease;
}

.model-dropdown-item:last-child {
  border-bottom: 0;
}

.model-dropdown-item:hover {
  background: var(--ue-surface-highest);
  color: var(--ue-primary);
}

.model-dropdown-name {
  font-size: 15px;
}

.model-dropdown-price {
  font-family: var(--ue-font-mono);
  font-size: 12px;
  color: var(--ue-primary);
}

/* --------------------------------------------------------------------------
   Customizer workspace — hero stage + inspector column
   -------------------------------------------------------------------------- */

.customizer-blocks-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ue-gutter);
  align-items: start;
  scroll-margin-top: calc(var(--ue-topbar-h) + 24px);
}

/* Stage --------------------------------------------------------------------- */

.studio-stage {
  background: var(--ue-card);
  border: 1px solid var(--ue-line);
  padding: var(--ue-stack-md);
  display: flex;
  flex-direction: column;
}

.studio-stage-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ue-gutter);
  margin-bottom: var(--ue-gutter);
}

/* UE Switch toggle */
.stage-switch {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: var(--ue-input);
  border: 1px solid var(--ue-line);
}

.stage-switch-label {
  font-family: var(--ue-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--ue-on-surface-variant);
}

.stage-switch-toggle {
  position: relative;
  width: 44px;
  height: 24px;
  padding: 0;
  border: 1px solid var(--ue-line);
  border-radius: 999px;
  background: var(--ue-surface-highest);
  cursor: pointer;
  transition: background-color .2s ease, border-color .2s ease;
}

.stage-switch-toggle::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--ue-muted);
  transition: transform .2s ease, background-color .2s ease;
}

.stage-switch-toggle[aria-pressed="true"] {
  background: var(--ue-primary);
  border-color: var(--ue-primary);
}

.stage-switch-toggle[aria-pressed="true"]::after {
  transform: translateX(20px);
  background: #0b0b0b;
}

/* Slot tabs — chips with a gold underline for the active state */
.stage-tabs {
  display: flex;
  gap: var(--ue-stack-md);
  padding-bottom: var(--ue-stack-sm);
  margin-bottom: var(--ue-gutter);
  border-bottom: 1px solid var(--ue-line);
  overflow-x: auto;
}

.stage-tab {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 0 8px;
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  font-family: var(--ue-font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ue-muted);
  transition: color .2s ease, border-color .2s ease;
}

.stage-tab:hover {
  color: var(--ue-on-surface);
}

.stage-tab.is-active {
  color: var(--ue-primary);
  border-bottom-color: var(--ue-primary);
}

/* Sets 2 and 3 stay visible but inert until UE Switch is turned on */
.stage-tab.is-locked,
.stage-tab:disabled {
  opacity: .38;
  cursor: not-allowed;
}

.stage-tab.is-locked:hover {
  color: var(--ue-muted);
}

.slot-preview-thumb {
  display: flex;
  gap: 3px;
}

.thumb-ear-wrap {
  width: 22px;
  height: 22px;
  border: 1px solid var(--ue-line);
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
}

.stage-tab.is-active .thumb-ear-wrap {
  border-color: var(--ue-primary-container);
}

/* Preview viewport */
.stage-viewport {
  position: relative;
  flex: 1;
  min-height: 320px;
  display: grid;
  place-items: center;
  padding: var(--ue-stack-md) var(--ue-stack-md) 34px;
  background: var(--ue-surface-lowest);
  border: 1px solid var(--ue-line);
  background-image: radial-gradient(circle at 50% 40%, rgba(212, 175, 55, .06), transparent 62%);
}

.slot-live-preview-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--ue-gutter);
  width: 100%;
  min-height: 300px;
}

.slot-live-preview-container[hidden] {
  display: none !important;
}

.earpiece-preview {
  position: relative;
  width: min(240px, 46%);
  aspect-ratio: 1 / 1;
}

.earpiece-preview > img,
.earpiece-preview > .artwork-mask,
.initials-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.base-model-img { z-index: 1; }
.faceplate-color-img { z-index: 2; }

.artwork-mask {
  z-index: 3;
  overflow: hidden;
  cursor: grab;
  touch-action: none;
  user-select: none;
  mask-position: center;
  mask-size: contain;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  -webkit-mask-size: contain;
  -webkit-mask-repeat: no-repeat;
}

.artwork-upload-img {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: contain;
  transform-origin: center;
  pointer-events: none;
  user-select: none;
}

.halo-border-img { z-index: 4; pointer-events: none; }
.engraving-img { z-index: 5; pointer-events: none; }
.shell-highlight-img { z-index: 6; pointer-events: none; }

.initials-overlay {
  z-index: 5;
  top: 17%;
  left: 42%;
  width: 30%;
  height: 24%;
  display: grid;
  place-items: center;
  color: #d8d8d8;
  font-family: var(--ue-font-display);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  pointer-events: none;
}

/* Left / right key, pinned under the shells and lit by the side-mode control */
.stage-side-key {
  position: absolute;
  left: var(--ue-stack-md);
  right: var(--ue-stack-md);
  bottom: 12px;
  display: flex;
  justify-content: space-between;
  font-family: var(--ue-font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ue-muted);
  pointer-events: none;
}

.studio-stage[data-side-focus="l"] .stage-side-key-l,
.studio-stage[data-side-focus="r"] .stage-side-key-r {
  color: var(--ue-primary);
}

/* Dim the ear that is not currently being edited */
.studio-stage[data-side-focus="l"] .earpiece-preview.r-earpiece,
.studio-stage[data-side-focus="r"] .earpiece-preview.l-earpiece {
  opacity: .42;
}

.earpiece-preview {
  transition: opacity .25s ease;
}

/* Product name / description under the stage */
.stage-product-meta {
  margin-top: var(--ue-gutter);
  padding-top: var(--ue-gutter);
  border-top: 1px solid var(--ue-line);
}

.stage-product-meta .ue-headline {
  font-size: 22px;
  color: var(--ue-primary);
  margin-bottom: 6px;
}

.stage-product-meta p {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ue-muted);
  max-width: 68ch;
}

.stage-product-hint {
  margin-top: 8px !important;
  font-family: var(--ue-font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
}

/* Single-side models hide the opposite earpiece */
body.single-left .earpiece-preview.r-earpiece,
body.single-left .summary-ear-right,
body.single-right .earpiece-preview.l-earpiece,
body.single-right .summary-ear-left {
  display: none;
}

/* --------------------------------------------------------------------------
   Inspector column — colour table, artwork, ambient, STL
   -------------------------------------------------------------------------- */

/* In the inspector the column is ~400px, so Cable and Box stack rather than
   sitting side by side; the two-across rule only applies outside it. */
.studio-inspector .cable-case-grid {
  grid-template-columns: 1fr;
  gap: var(--ue-gutter);
}

/* The colour table stands alone under the preview now, so it needs the card
   treatment it used to inherit from the faceplate card around it. */
.stage-set-block {
  background: var(--ue-card);
  border: 1px solid var(--ue-line);
  padding: var(--ue-stack-md);
}

.stage-set-block .color-picker-section {
  padding-top: 0;
  border-top: 0;
}

/* Customer Detail sits inside the column; it no longer needs the full-width
   section rule's large top gap and divider. */
.studio-stage-col .order-details-section {
  margin-top: 0;
  padding-top: var(--ue-stack-md);
  background: var(--ue-card);
  border: 1px solid var(--ue-line);
  padding-inline: var(--ue-stack-md);
  padding-bottom: var(--ue-stack-md);
}

.studio-stage-col {
  display: flex;
  flex-direction: column;
  gap: var(--ue-gutter);
  min-width: 0;
}

.studio-inspector {
  display: flex;
  flex-direction: column;
  gap: var(--ue-gutter);
  min-width: 0;
}

.customizer-set-block {
  display: flex;
  flex-direction: column;
  gap: var(--ue-gutter);
}

.inspector-card .studio-card-head {
  padding-bottom: 12px;
  margin-bottom: var(--ue-gutter);
}

.inspector-card .studio-card-head .ue-headline {
  font-size: 20px;
}

.inspector-card-icon {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: var(--ue-primary);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: 0 0 22px;
}

/* Reusable pill switch ------------------------------------------------------ */

.ue-switch {
  position: relative;
  display: inline-flex;
  flex: 0 0 auto;
  cursor: pointer;
}

.ue-switch input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.ue-switch-track {
  position: relative;
  display: block;
  width: 44px;
  height: 24px;
  border: 1px solid var(--ue-line);
  border-radius: 999px;
  background: var(--ue-surface-highest);
  transition: background-color .2s ease, border-color .2s ease;
}

.ue-switch-track::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--ue-muted);
  transition: transform .2s ease, background-color .2s ease;
}

.ue-switch input:checked ~ .ue-switch-track {
  background: var(--ue-primary);
  border-color: var(--ue-primary);
}

.ue-switch input:checked ~ .ue-switch-track::after {
  transform: translateX(20px);
  background: #0b0b0b;
}

.ue-switch input:focus-visible ~ .ue-switch-track {
  outline: 1px solid var(--ue-primary);
  outline-offset: 2px;
}

.inspector-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ue-gutter);
}

.inspector-toggle-label {
  display: flex;
  flex-direction: column;
  gap: 3px;
  cursor: pointer;
  font-family: var(--ue-font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ue-on-surface);
}

.inspector-toggle-price {
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--ue-primary);
}

/* Left / link / Right target selector --------------------------------------- */

.side-mode-row {
  padding-bottom: var(--ue-gutter);
  margin-bottom: var(--ue-gutter);
  border-bottom: 1px solid var(--ue-line-soft);
}

.side-mode-caption {
  display: block;
  margin-bottom: 8px;
  font-family: var(--ue-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--ue-muted);
}

.side-mode-control {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
}

.side-mode-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 12px;
  background: var(--ue-input);
  border: 1px solid var(--ue-line);
  cursor: pointer;
  font-family: var(--ue-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ue-muted);
  transition: border-color .2s ease, color .2s ease, background-color .2s ease, box-shadow .2s ease;
}

.side-mode-btn + .side-mode-btn {
  border-left: 0;
}

.side-mode-btn svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.side-mode-btn:hover {
  color: var(--ue-on-surface);
}

.side-mode-btn.is-active {
  background: rgba(212, 175, 55, .1);
  border-color: var(--ue-primary);
  color: var(--ue-primary);
  box-shadow: var(--ue-glow);
}

.side-mode-note {
  margin: 8px 0 0;
  font-size: 12px;
  line-height: 1.5;
  color: var(--ue-muted);
}

/* Which ear the swatch grid is currently painting */
.color-table-key {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  font-family: var(--ue-font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--ue-muted);
}

.color-table-key .is-active {
  color: var(--ue-primary);
}

.selected-style-label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--ue-stack-sm);
}

.selected-style-side {
  color: var(--ue-muted);
}

.customizer-set-block[hidden] {
  display: none !important;
}

.control-section {
  padding-top: var(--ue-gutter);
  border-top: 1px solid var(--ue-line-soft);
}

.control-section:first-child {
  padding-top: 0;
  border-top: 0;
}

.control-section > h4,
.control-section > h5 {
  margin: 0 0 12px;
  font-family: var(--ue-font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--ue-on-surface-variant);
}

.section-divider {
  border: 0;
  border-top: 1px solid var(--ue-line);
  margin: var(--ue-gutter) 0;
}

.disclaimer {
  margin: 12px 0 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--ue-muted);
}

/* Material category chips — wrapped so every category stays reachable */
.color-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
  padding-bottom: var(--ue-stack-sm);
}

.color-tab-link {
  flex: 0 0 auto;
  padding: 7px 12px;
  background: var(--ue-input);
  border: 1px solid var(--ue-line);
  cursor: pointer;
  white-space: nowrap;
  font-family: var(--ue-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ue-muted);
  transition: color .2s ease, border-color .2s ease, background-color .2s ease, box-shadow .2s ease;
}

.color-tab-link:hover {
  border-color: var(--ue-outline-variant);
  color: var(--ue-on-surface);
}

.color-tab-link.active {
  background: rgba(212, 175, 55, .1);
  border-color: var(--ue-primary);
  color: var(--ue-primary);
  box-shadow: var(--ue-glow);
}

/* Swatch table — an even grid of colour tiles, driven by .is-active */
.color-panel {
  display: none;
  grid-template-columns: repeat(auto-fill, minmax(64px, 1fr));
  gap: 10px;
}

.color-panel.is-active {
  display: grid;
}

.color-dot-wrapper {
  position: relative;
  aspect-ratio: 1 / 1;
  padding: 2px;
  border: 2px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.color-dot-wrapper:hover {
  border-color: var(--ue-outline-variant);
}

.color-dot-wrapper.active {
  border-color: var(--ue-primary);
  box-shadow: var(--ue-glow-strong);
}

.color-dot-wrapper.active::after {
  content: '';
  position: absolute;
  right: 4px;
  bottom: 4px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ue-primary);
  box-shadow: 0 0 0 2px #0b0b0b;
}

.color-dot {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 6px;
  /* Faceplate PNGs are a shell silhouette on transparency — zoom past the
     transparent margin so each tile reads as a solid material sample. */
  background-size: 200%;
  background-position: center;
  background-color: var(--ue-surface-highest);
  border: 1px solid var(--ue-line);
}

.gate-empty {
  margin: 0 0 var(--ue-stack-md);
  padding: var(--ue-gutter);
  background: var(--ue-input);
  border: 1px solid var(--ue-outline-variant);
  font-size: 15px;
  line-height: 1.6;
  color: var(--ue-on-surface-variant);
}

.gate-empty code {
  font-family: var(--ue-font-mono);
  font-size: 13px;
  color: var(--ue-primary);
}

.color-empty {
  margin: 0 0 var(--ue-gutter);
  padding: 12px 14px;
  background: var(--ue-input);
  border: 1px solid var(--ue-line);
  font-size: 13px;
  line-height: 1.5;
  color: var(--ue-muted);
}

.selected-style-label {
  margin-top: var(--ue-gutter);
  font-family: var(--ue-font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ue-muted);
}

.selected-style-label .style-name {
  color: var(--ue-primary);
}

/* Checkboxes ---------------------------------------------------------------- */

.custom-checkbox-container,
.plain-checkbox-container {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  font-size: 14px;
  line-height: 1.5;
  color: var(--ue-on-surface);
}

.custom-checkbox-container input[type="checkbox"],
.plain-checkbox-container input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.custom-checkbox-container .checkmark {
  position: relative;
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  margin-top: 2px;
  background: var(--ue-input);
  border: 1px solid var(--ue-line);
  transition: border-color .2s ease, background-color .2s ease;
}

.custom-checkbox-container:hover .checkmark {
  border-color: var(--ue-outline-variant);
}

.custom-checkbox-container input:checked ~ .checkmark {
  background: var(--ue-primary);
  border-color: var(--ue-primary);
}

.custom-checkbox-container input:checked ~ .checkmark::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 0;
  width: 5px;
  height: 10px;
  border: solid var(--ue-on-primary);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.custom-checkbox-container input:focus-visible ~ .checkmark,
.plain-checkbox-container input:focus-visible {
  outline: 1px solid var(--ue-primary);
  outline-offset: 2px;
}

.plain-checkbox-container input[type="checkbox"] {
  position: static;
  opacity: 1;
  width: 16px;
  height: 16px;
  accent-color: var(--ue-primary);
}

/* Custom STL upload --------------------------------------------------------- */

/* One slot per ear, so left and right geometry can never be confused */
.stl-slots {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--ue-gutter);
}

.stl-slot {
  min-width: 0;
}

.stl-slot-label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--ue-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ue-on-surface-variant);
}

.stl-dropzone {
  padding: var(--ue-gutter);
}

.stl-file-name {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ue-stack-sm);
  min-width: 0;
  margin: 8px 0 0;
  font-family: var(--ue-font-mono);
  font-size: 12px;
  color: var(--ue-primary);
}

.stl-file-name:empty {
  display: none;
}

.stl-file-name > span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.stl-file-remove {
  flex: 0 0 auto;
  padding: 0;
  background: none;
  border: 0;
  cursor: pointer;
  font-family: var(--ue-font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ue-muted);
  transition: color .2s ease;
}

.stl-file-remove:hover {
  color: var(--ue-primary);
}

.stl-status {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--ue-primary);
}

.stl-status:empty {
  display: none;
}

.stl-status.is-error {
  color: var(--ue-error);
}

/* Artwork ------------------------------------------------------------------- */

.artwork-sub-panel {
  margin-top: var(--ue-gutter);
  padding: var(--ue-gutter);
  background: var(--ue-input);
  border: 1px solid var(--ue-line);
}

.art-mirror-row {
  margin-bottom: var(--ue-gutter);
}

/* Requirements collapse so the inspector column stays scannable */
.art-requirements {
  margin-top: var(--ue-gutter);
  padding-top: var(--ue-gutter);
  border-top: 1px solid var(--ue-line);
}

.art-requirements > summary {
  cursor: pointer;
  font-family: var(--ue-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ue-on-surface-variant);
}

.art-requirements > summary:hover {
  color: var(--ue-primary);
}

.art-requirements ol {
  margin: 12px 0 0;
  padding-left: 16px;
}

.art-requirements li {
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--ue-muted);
  margin-bottom: 8px;
}

/* Dropzone */
.art-dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: var(--ue-stack-md);
  text-align: center;
  background: var(--ue-surface-lowest);
  border: 2px dashed var(--ue-line);
  cursor: pointer;
  transition: border-color .2s ease, background-color .2s ease;
}

.art-dropzone:hover,
.art-dropzone.is-dragover {
  border-color: var(--ue-primary);
  background: rgba(212, 175, 55, .05);
}

.art-dropzone svg {
  width: 34px;
  height: 34px;
  fill: none;
  stroke: var(--ue-on-surface-variant);
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke .2s ease;
}

.art-dropzone:hover svg,
.art-dropzone.is-dragover svg {
  stroke: var(--ue-primary);
}

.art-dropzone-title {
  font-family: var(--ue-font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ue-on-surface);
}

.art-dropzone-hint {
  font-size: 13px;
  color: var(--ue-muted);
}

.artwork-file-buttons-split {
  gap: var(--ue-gutter);
}

.split-upload-col {
  flex: 1 1 200px;
  min-width: 0;
}

.split-upload-col > span {
  display: block;
  margin-bottom: 6px;
  font-family: var(--ue-font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ue-on-surface-variant);
}

.file-name-label {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  color: var(--ue-primary);
  word-break: break-all;
}

/* Sliders */
.artwork-sliders-container {
  margin-top: var(--ue-gutter);
  padding-top: var(--ue-gutter);
  border-top: 1px solid var(--ue-line);
}

.art-slider-group h5 {
  margin: 0 0 10px;
  font-family: var(--ue-font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ue-on-surface-variant);
}

.art-slider-group label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  font-family: var(--ue-font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ue-muted);
}

.art-slider-group input[type="range"] {
  flex: 1;
  accent-color: var(--ue-primary);
  background: transparent;
}

/* Halo ---------------------------------------------------------------------- */

.halo-options {
  gap: 12px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.halo-option-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--ue-input);
  border: 1px solid var(--ue-line);
  cursor: pointer;
  font-family: var(--ue-font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ue-on-surface-variant);
  transition: border-color .2s ease, color .2s ease, box-shadow .2s ease;
}

.halo-option-card:hover {
  border-color: var(--ue-outline-variant);
}

.halo-option-card.selected {
  border-color: var(--ue-primary);
  color: var(--ue-primary);
  box-shadow: var(--ue-glow);
}

.halo-color-circle {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1px solid var(--ue-line);
  background: linear-gradient(135deg, #d9d9d9, #8b8b8b);
}

.halo-color-circle.gold,
.halo-color-circle.gold-halo {
  background: linear-gradient(135deg, #f2ca50, #8a6b14);
}

/* Inputs / selects ---------------------------------------------------------- */

.ue-studio input[type="text"],
.ue-studio input[type="email"],
.ue-studio textarea,
.ue-studio select {
  width: 100%;
  padding: 12px 14px;
  background: var(--ue-input);
  color: var(--ue-on-surface);
  border: 1px solid transparent;
  border-bottom: 1px solid var(--ue-line);
  border-radius: 0;
  font-family: var(--ue-font-body);
  font-size: 15px;
  transition: border-color .2s ease;
  appearance: none;
}

.ue-studio select {
  background-image: linear-gradient(45deg, transparent 50%, var(--ue-primary) 50%),
                    linear-gradient(135deg, var(--ue-primary) 50%, transparent 50%);
  background-position: calc(100% - 18px) calc(50% + 2px), calc(100% - 13px) calc(50% + 2px);
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 40px;
  cursor: pointer;
}

.ue-studio textarea {
  min-height: 92px;
  resize: vertical;
  line-height: 1.5;
}

.ue-studio input[type="text"]:focus,
.ue-studio input[type="email"]:focus,
.ue-studio textarea:focus,
.ue-studio select:focus {
  border-bottom-color: var(--ue-primary);
  outline: none;
}

.ue-studio input::placeholder,
.ue-studio textarea::placeholder {
  color: #6b6b6b;
}

.logo-engraving-section > label,
.comments-section > label,
.form-group > label,
.serial-number-field > label,
.case-engraving-wrapper > label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--ue-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ue-on-surface-variant);
}

.initials-inputs-row {
  gap: var(--ue-gutter);
  margin-top: var(--ue-gutter);
}

.initials-col {
  flex: 1 1 140px;
}

.initials-col label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--ue-font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ue-muted);
}

.initials-col input {
  text-transform: uppercase;
  letter-spacing: .3em;
  font-family: var(--ue-font-mono);
}

.tooltip-icon {
  display: inline-grid;
  place-items: center;
  width: 16px;
  height: 16px;
  margin-left: 6px;
  border-radius: 50%;
  border: 1px solid var(--ue-line);
  font-size: 10px;
  color: var(--ue-muted);
  cursor: help;
}

/* --------------------------------------------------------------------------
   Cable / case / accessories option lists
   -------------------------------------------------------------------------- */

/* Cable and Box share one section, one block each */
.cable-case-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ue-gutter);
  align-items: start;
}

.option-block {
  min-width: 0;
  padding: var(--ue-stack-md);
  background: var(--ue-card);
  border: 1px solid var(--ue-line);
  scroll-margin-top: calc(var(--ue-topbar-h) + 24px);
}

.option-block[hidden] {
  display: none !important;
}

.option-block-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ue-stack-sm);
  padding-bottom: 12px;
  margin-bottom: var(--ue-gutter);
  border-bottom: 1px solid var(--ue-line);
}

.option-block-head h3 {
  margin: 0;
  font-family: var(--ue-font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: .02em;
  text-transform: uppercase;
}

.option-block > label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--ue-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ue-on-surface-variant);
}

.option-block .option-preview {
  margin-top: var(--ue-gutter);
}

.option-layout-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ue-gutter);
  align-items: start;
}

.option-list {
  display: flex;
  flex-direction: column;
  gap: var(--ue-stack-sm);
}

.cable-option-card,
.case-option-card {
  display: flex;
  align-items: center;
  gap: var(--ue-gutter);
  padding: 12px 16px;
  background: var(--ue-card);
  border: 1px solid var(--ue-line);
  cursor: pointer;
  transition: border-color .2s ease, box-shadow .2s ease, background-color .2s ease;
}

.cable-option-card:hover,
.case-option-card:hover {
  border-color: var(--ue-outline-variant);
}

.cable-option-card.selected,
.case-option-card.selected {
  border-color: var(--ue-primary-container);
  box-shadow: var(--ue-glow);
  background: linear-gradient(90deg, rgba(212, 175, 55, .08), rgba(212, 175, 55, 0) 60%), var(--ue-card);
}

.cable-icon-wrap,
.case-icon-wrap {
  display: grid;
  place-items: center;
  flex: 0 0 56px;
  width: 56px;
  height: 56px;
  background: var(--ue-input);
  border: 1px solid var(--ue-line);
}

.cable-icon-wrap img {
  width: 76%;
  height: 76%;
  object-fit: contain;
}

.case-icon-wrap svg {
  stroke: var(--ue-primary);
  fill: none;
}

.cable-info h4,
.case-info h4 {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 500;
}

.cable-info span,
.case-info span {
  font-family: var(--ue-font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--ue-primary);
}

.option-preview {
  display: grid;
  place-items: center;
  min-height: 220px;
  padding: var(--ue-stack-md);
  background: var(--ue-surface-lowest);
  border: 1px solid var(--ue-line);
  position: sticky;
  top: calc(var(--ue-topbar-h) + var(--ue-gutter));
}

.option-preview img {
  max-height: 260px;
  object-fit: contain;
}

.case-engraving-wrapper {
  margin-top: var(--ue-gutter);
  padding-top: var(--ue-gutter);
  border-top: 1px solid var(--ue-line);
}

.char-count {
  margin-top: 6px;
  font-family: var(--ue-font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--ue-muted);
}

/* Accessories --------------------------------------------------------------- */

.accessories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--ue-gutter);
}

.accessory-card {
  display: flex;
  align-items: center;
  gap: var(--ue-gutter);
  padding: var(--ue-gutter);
  background: var(--ue-card);
  border: 1px solid var(--ue-line);
  cursor: pointer;
  transition: border-color .2s ease, box-shadow .2s ease, background-color .2s ease;
}

.accessory-card:hover {
  border-color: var(--ue-outline-variant);
}

.accessory-card.selected {
  border-color: var(--ue-primary-container);
  box-shadow: var(--ue-glow);
  background: linear-gradient(90deg, rgba(212, 175, 55, .08), rgba(212, 175, 55, 0) 60%), var(--ue-card);
}

.accessory-card input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.accessory-icon {
  display: grid;
  place-items: center;
  flex: 0 0 64px;
  width: 64px;
  height: 64px;
  background: var(--ue-input);
  border: 1px solid var(--ue-line);
  overflow: hidden;
}

.accessory-icon img {
  width: 78%;
  height: 78%;
  object-fit: contain;
}

.accessory-icon svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: var(--ue-primary);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.accessory-body {
  min-width: 0;
}

.accessory-name {
  display: block;
  margin-bottom: 4px;
  font-family: var(--ue-font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.accessory-price {
  display: block;
  font-family: var(--ue-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ue-primary);
}

.accessory-check {
  margin-left: auto;
  width: 18px;
  height: 18px;
  border: 1px solid var(--ue-line);
  position: relative;
  flex: 0 0 18px;
}

.accessory-card.selected .accessory-check {
  background: var(--ue-primary);
  border-color: var(--ue-primary);
}

.accessory-card.selected .accessory-check::after {
  content: '';
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid var(--ue-on-primary);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* --------------------------------------------------------------------------
   Order details / fit
   -------------------------------------------------------------------------- */

.order-form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ue-gutter);
  background: var(--ue-card);
  border: 1px solid var(--ue-line);
  padding: var(--ue-stack-md);
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.newsletter-checkboxes {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: var(--ue-stack-sm);
  border-top: 1px solid var(--ue-line-soft);
}

.privacy-note {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--ue-muted);
}

.privacy-note a {
  color: var(--ue-primary);
  text-decoration: underline;
}

.serial-number-field {
  max-width: 420px;
  background: var(--ue-card);
  border: 1px solid var(--ue-line);
  padding: var(--ue-stack-md);
}

.fit-choices-wrapper > h4 {
  margin: 0 0 var(--ue-gutter);
  font-family: var(--ue-font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--ue-on-surface-variant);
}

.fit-choices-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.fit-choice-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: var(--ue-gutter);
  background: var(--ue-card);
  border: 1px solid var(--ue-line);
  cursor: pointer;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ue-on-surface-variant);
  transition: border-color .2s ease, box-shadow .2s ease;
}

.fit-choice-card:hover {
  border-color: var(--ue-outline-variant);
}

.fit-choice-card.active {
  border-color: var(--ue-primary-container);
  box-shadow: var(--ue-glow);
  color: var(--ue-on-surface);
}

.fit-choice-card input[type="radio"] {
  margin-top: 4px;
  accent-color: var(--ue-primary);
  flex: 0 0 auto;
}

.fit-choice-card strong {
  color: var(--ue-primary);
}

/* --------------------------------------------------------------------------
   Summary
   -------------------------------------------------------------------------- */

.summary-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: var(--ue-stack-md);
}

.summary-items {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.summary-item-card {
  display: flex;
  align-items: center;
  gap: var(--ue-gutter);
  padding: var(--ue-gutter);
  background: var(--ue-card);
  border: 1px solid var(--ue-line);
}

.summary-item-card[hidden] {
  display: none !important;
}

.summary-product-image,
.summary-accessory-image {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex: 0 0 132px;
  width: 132px;
  height: 84px;
  background: var(--ue-surface-lowest);
  border: 1px solid var(--ue-line);
  overflow: hidden;
}

.summary-ear {
  position: relative;
  width: 64px;
  height: 64px;
}

.summary-ear-right {
  transform: scaleX(-1);
}

.summary-model-layer,
.summary-faceplate-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.summary-faceplate-layer {
  opacity: .94;
}

.summary-accessory-image img {
  max-width: 86%;
  max-height: 86%;
  object-fit: contain;
}

.summary-item-content {
  flex: 1;
  min-width: 0;
}

.summary-item-title {
  display: block;
  margin-bottom: 8px;
  font-family: var(--ue-font-display);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .02em;
  text-transform: uppercase;
}

.summary-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 8px 16px;
}

.summary-detail-grid > div {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.summary-detail-grid b {
  font-family: var(--ue-font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ue-muted);
}

.summary-detail-grid span {
  font-size: 13px;
  color: var(--ue-on-surface);
  overflow-wrap: anywhere;
}

.summary-item-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
  flex: 0 0 auto;
}

.summary-item-price,
.summary-item-actions > span {
  font-family: var(--ue-font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--ue-primary);
}

/* Share */
.share-panel {
  margin-top: var(--ue-gutter);
  padding: var(--ue-gutter);
  background: var(--ue-input);
  border: 1px solid var(--ue-line);
}

.share-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.share-row input {
  flex: 1;
  min-width: 0;
}

#share-status {
  margin: 8px 0 0;
  font-family: var(--ue-font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--ue-muted);
}

/* Checkout block */
.checkout-footer-block {
  margin-top: var(--ue-stack-md);
  padding: var(--ue-stack-md);
  background: var(--ue-card);
  border: 1px solid var(--ue-primary-container);
  box-shadow: var(--ue-glow);
}

.final-subtotal-display {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--ue-gutter);
  padding-bottom: var(--ue-gutter);
  margin-bottom: var(--ue-gutter);
  border-bottom: 1px solid var(--ue-line);
  font-family: var(--ue-font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--ue-on-surface-variant);
}

.final-subtotal-display > span {
  font-family: var(--ue-font-display);
  font-size: 30px;
  letter-spacing: .02em;
  color: var(--ue-primary);
}

.verification-note {
  margin: 0 0 var(--ue-gutter);
  font-size: 13px;
  color: var(--ue-muted);
}

.checkout-footer-block .ue-btn {
  width: 100%;
}

/* --------------------------------------------------------------------------
   Mobile dock
   -------------------------------------------------------------------------- */

.studio-dock {
  position: fixed;
  inset: auto 0 0 0;
  z-index: 55;
  display: flex;
  align-items: center;
  gap: var(--ue-gutter);
  padding: 12px var(--ue-margin-mobile);
  background: rgba(42, 42, 42, .9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid rgba(212, 175, 55, .3);
}

.studio-dock-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.studio-dock-meta strong:first-child {
  font-family: var(--ue-font-display);
  font-size: 20px;
  letter-spacing: .02em;
  color: var(--ue-primary);
}

.studio-dock-meta strong:last-child {
  font-family: var(--ue-font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .08em;
  color: var(--ue-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.studio-dock .ue-btn {
  flex: 1;
  padding: 14px 16px;
}

.studio-dock svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* --------------------------------------------------------------------------
   Engraving section — shell logo / initials + case text
   -------------------------------------------------------------------------- */

.engraving-scope {
  color: var(--ue-primary);
  white-space: nowrap;
}

.inspector-card.engraving-section .engraving-set-block[hidden] {
  display: none !important;
}

.engraving-set-block[hidden] {
  display: none !important;
}

/* --------------------------------------------------------------------------
   STL / fit interlock
   -------------------------------------------------------------------------- */

.fit-stl-banner {
  margin: 0 0 var(--ue-gutter);
  padding: 12px 14px;
  background: rgba(212, 175, 55, .08);
  border: 1px solid var(--ue-primary-container);
  font-size: 14px;
  color: var(--ue-on-surface-variant);
}

.fit-choices-list.is-locked {
  opacity: .45;
  pointer-events: none;
}

.summary-generic-icon {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: var(--ue-primary);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* --------------------------------------------------------------------------
   Responsive — modules stack on mobile, stage pins on desktop
   -------------------------------------------------------------------------- */

/* Below the desktop breakpoint the rail is not pinned, so it flows inline above
   the workspace instead of disappearing. Model selection, the line items and the
   total have to stay reachable at every width. */
@media (max-width: 1023px) {
  .studio-rail {
    display: flex;
    position: static;
    width: auto;
    margin-top: var(--ue-topbar-h);
    border-right: 0;
    border-bottom: 1px solid var(--ue-outline-variant);
  }

  /* Keep the build sheet from pushing the product off the first screen */
  .rail-lines {
    max-height: 216px;
  }

  .studio-main {
    padding-top: var(--ue-stack-md);
  }

  .stage-viewport {
    min-height: 260px;
  }

  /* Total and CTA sit side by side; the docked bar already carries a cart
     button on this breakpoint, so the rail's own actions stay compact. */
  .studio-rail-foot {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: stretch;
  }

  .rail-total {
    justify-content: center;
  }

  .rail-actions {
    flex-direction: row;
    align-items: center;
    border-left: 1px solid var(--ue-line);
  }

  .rail-actions .ue-btn,
  .rail-actions .ue-btn-ghost {
    width: auto;
  }

  .rail-note {
    display: none;
  }

  .studio-rail-foot .share-panel {
    grid-column: 1 / -1;
    margin-top: var(--ue-gutter);
  }
}

@media (min-width: 700px) {
  .order-form-grid {
    grid-template-columns: 1fr 1fr;
  }

  .model-gate-bar,
  .model-gate-body,
  .model-gate-foot {
    padding-left: var(--ue-stack-lg);
    padding-right: var(--ue-stack-lg);
  }
}

@media (min-width: 1024px) {
  .studio-topbar {
    padding: 0 var(--ue-margin-desktop);
  }

  .studio-topnav,
  .studio-subtotal {
    display: flex;
  }

  .studio-rail {
    display: flex;
  }

  .studio-main {
    margin-left: var(--ue-rail-w);
    padding-left: var(--ue-stack-lg);
    padding-right: var(--ue-stack-lg);
    padding-bottom: var(--ue-stack-lg);
    max-width: calc(1440px + var(--ue-rail-w));
  }

  .studio-dock {
    display: none;
  }

  /* Hero stage carries the weight; inspector is the narrower working column */
  .customizer-blocks-container {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--ue-stack-md);
  }

  /* The stage no longer pins: the cable/box row shares its column and must be
     able to scroll into view beneath the preview. */

  .stage-viewport {
    min-height: 380px;
  }

  .option-layout-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--ue-stack-md);
  }

  .cable-case-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--ue-gutter);
  }

  .fit-choices-list {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1280px) {
  .model-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .ue-studio *,
  .ue-studio *::before,
  .ue-studio *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}