/* =========================================================
   ĐĂNG NHIÊN GEAR LAB | RIG BUILDER STYLESHEET
   High-Tech Dark Studio Aesthetic (DJI / SmallRig Inspired)
   ========================================================= */

:root {
  --bg-space: #07090e;
  --bg-surface: #0e121a;
  --bg-card: #151b26;
  --bg-card-hover: #1c2433;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-active: rgba(0, 229, 255, 0.4);
  
  --tech-cyan: #00e5ff;
  --tech-cyan-glow: rgba(0, 229, 255, 0.35);
  --action-orange: #ff5722;
  --action-orange-glow: rgba(255, 87, 34, 0.35);
  --gold-accent: #ffb703;
  --success-green: #10b981;
  
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;
  
  --font-main: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'Space Grotesk', monospace;
  
  --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body.tech-dark {
  background-color: var(--bg-space);
  color: var(--text-main);
  font-family: var(--font-main);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(0, 229, 255, 0.05) 0%, transparent 60%),
    radial-gradient(circle at 100% 100%, rgba(255, 87, 34, 0.04) 0%, transparent 50%);
}

/* =========================================================
   HEADER
   ========================================================= */
.rig-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(14, 18, 26, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 12px 24px;
}

.header-container {
  max-width: 1720px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

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

.back-store-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  transition: var(--transition-fast);
  text-decoration: none;
}
.back-store-link:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-main);
  border-color: rgba(255, 255, 255, 0.2);
}

.brand-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 8px;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.15), rgba(0, 229, 255, 0.02));
  color: var(--tech-cyan);
  border: 1px solid rgba(0, 229, 255, 0.3);
  border-radius: 6px;
  letter-spacing: 1px;
}

.brand-info h1 {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.3px;
  color: #fff;
  line-height: 1.2;
}
.brand-info h1 span {
  color: var(--tech-cyan);
  font-family: var(--font-mono);
  font-weight: 700;
}
.brand-info p {
  font-size: 12px;
  color: var(--text-muted);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sound-toggle-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-muted);
  font-size: 12px;
  cursor: pointer;
  transition: var(--transition-fast);
  user-select: none;
}
.sound-toggle-btn.active {
  background: rgba(0, 229, 255, 0.1);
  border-color: var(--tech-cyan);
  color: var(--tech-cyan);
}
.sound-toggle-btn:hover {
  border-color: var(--tech-cyan);
}

.btn-reset-rig {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}
.btn-reset-rig:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-shopee-aff {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  background: linear-gradient(135deg, #ee4d2d, #ff6433);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  border-radius: var(--radius-md);
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(238, 77, 45, 0.3);
  transition: var(--transition-fast);
}
.btn-shopee-aff:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(238, 77, 45, 0.45);
}

/* =========================================================
   LAYOUT: 3 COLUMNS (LEFT / CENTER / RIGHT)
   ========================================================= */
.builder-layout {
  max-width: 1720px;
  margin: 0 auto;
  padding: 24px;
  display: grid;
  grid-template-columns: 320px 1fr 380px;
  gap: 24px;
  align-items: start;
}

@media (max-width: 1400px) {
  .builder-layout {
    grid-template-columns: 280px 1fr 340px;
    gap: 16px;
    padding: 16px;
  }
}

@media (max-width: 1080px) {
  .builder-layout {
    grid-template-columns: 1fr;
  }
}

/* =========================================================
   SIDEBAR CARDS (COMMON)
   ========================================================= */
.sidebar-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 18px;
  margin-bottom: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  position: relative;
  overflow: hidden;
}

.card-header {
  margin-bottom: 16px;
}
.card-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--tech-cyan);
  background: rgba(0, 229, 255, 0.08);
  padding: 3px 8px;
  border-radius: 4px;
  letter-spacing: 0.8px;
  display: inline-block;
  margin-bottom: 6px;
}
.card-header h3 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.2px;
}
.card-header .subtitle {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* =========================================================
   LEFT SIDEBAR: PRESET BUTTONS & SLOTS
   ========================================================= */
.preset-buttons-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.preset-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-main);
  text-align: left;
  cursor: pointer;
  transition: var(--transition-fast);
}
.preset-btn:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateX(3px);
}
.preset-btn.active {
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.12), rgba(0, 229, 255, 0.02));
  border-color: var(--tech-cyan);
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.15);
}

.preset-icon {
  font-size: 20px;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.preset-meta strong {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
}
.preset-meta span {
  font-size: 11px;
  color: var(--text-dim);
}

/* Slots List */
.slot-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.slot-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
}
.slot-item:hover {
  background: var(--bg-card);
  border-color: rgba(255, 255, 255, 0.15);
}
.slot-item.active {
  border-color: var(--tech-cyan);
  background: rgba(0, 229, 255, 0.06);
}

.slot-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-dim);
  flex-shrink: 0;
}
.slot-item.active .slot-indicator {
  background: var(--tech-cyan);
  box-shadow: 0 0 8px var(--tech-cyan);
}
.slot-indicator.slot-bottom { background: #3b82f6; }
.slot-indicator.slot-body { background: #10b981; }
.slot-indicator.slot-top { background: #f59e0b; }
.slot-indicator.slot-side { background: #8b5cf6; }
.slot-indicator.slot-lens { background: #ec4899; }

.slot-text {
  flex: 1;
}
.slot-text strong {
  display: block;
  font-size: 13px;
  color: #fff;
}
.slot-text small {
  font-size: 11px;
  color: var(--text-dim);
}

.slot-count, .slot-status {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-dim);
}
.slot-status.installed {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success-green);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.notice-card {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: linear-gradient(135deg, rgba(255, 183, 3, 0.08), rgba(255, 183, 3, 0.02));
  border-color: rgba(255, 183, 3, 0.25);
}
.notice-icon {
  font-size: 20px;
}
.notice-body h4 {
  font-size: 13px;
  color: var(--gold-accent);
  margin-bottom: 4px;
}
.notice-body p {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.45;
}

/* =========================================================
   CENTER: STAGE & VISUALIZER
   ========================================================= */
.stage-section {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.stage-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 10px 18px;
  flex-wrap: wrap;
}

.device-switch-group {
  display: flex;
  align-items: center;
  gap: 10px;
}
.device-switch-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--text-dim);
  letter-spacing: 0.5px;
}

.device-switch-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition-fast);
  text-align: left;
}
.device-switch-btn:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.2);
  color: #fff;
}
.device-switch-btn.active {
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.15), rgba(0, 229, 255, 0.02));
  border-color: var(--tech-cyan);
  color: #fff;
  box-shadow: 0 0 14px rgba(0, 229, 255, 0.2);
}
.device-switch-btn.active strong {
  color: var(--tech-cyan);
}
.device-switch-btn .btn-icon {
  font-size: 18px;
}
.device-switch-btn strong {
  display: block;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.2;
}
.device-switch-btn small {
  font-size: 10px;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.device-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success-green);
  box-shadow: 0 0 8px var(--success-green);
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.view-mode-tabs {
  display: flex;
  background: var(--bg-card);
  padding: 4px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  gap: 4px;
}

.mode-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}
.mode-tab.active {
  background: var(--tech-cyan);
  color: #000;
  font-weight: 700;
  box-shadow: 0 2px 8px var(--tech-cyan-glow);
}

/* VIEWPORT CONTAINER */
.stage-viewport {
  position: relative;
  width: 100%;
  height: 600px;
  background: radial-gradient(circle at 50% 50%, #151b26 0%, #0a0d14 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 0 60px rgba(0, 0, 0, 0.6);
}

/* Tech Blueprint Grid & Accents */
.tech-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.blueprint-crosshair {
  position: absolute;
  width: 20px;
  height: 20px;
  pointer-events: none;
  border-color: rgba(0, 229, 255, 0.3);
}
.blueprint-crosshair.top-left { top: 16px; left: 16px; border-top: 2px solid; border-left: 2px solid; }
.blueprint-crosshair.top-right { top: 16px; right: 16px; border-top: 2px solid; border-right: 2px solid; }
.blueprint-crosshair.bottom-left { bottom: 16px; left: 16px; border-bottom: 2px solid; border-left: 2px solid; }
.blueprint-crosshair.bottom-right { bottom: 16px; right: 16px; border-bottom: 2px solid; border-right: 2px solid; }

/* Camera Image Display */
.camera-display-container {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.camera-image {
  max-width: 90%;
  max-height: 85%;
  object-fit: contain;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.8));
  transition: transform var(--transition-smooth), opacity var(--transition-fast);
  user-select: none;
}
.camera-image.snap-effect {
  animation: snap-rig 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
@keyframes snap-rig {
  0% { transform: scale(0.96); filter: brightness(1.4); }
  50% { transform: scale(1.03); }
  100% { transform: scale(1); filter: brightness(1); }
}

/* Stage Overlay Badge */
.stage-overlay-badge {
  position: absolute;
  top: 20px;
  left: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(14, 18, 26, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--tech-cyan);
  backdrop-filter: blur(8px);
  letter-spacing: 0.5px;
}

/* HOTSPOTS PINS */
.hotspots-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hotspot-pin {
  position: absolute;
  transform: translate(-50%, -50%);
  pointer-events: auto;
  cursor: pointer;
  z-index: 10;
}

.pin-pulse {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 32px;
  height: 32px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 2px solid var(--tech-cyan);
  opacity: 0.8;
  animation: pin-wave 2s infinite ease-out;
}
@keyframes pin-wave {
  0% { width: 14px; height: 14px; opacity: 1; }
  100% { width: 44px; height: 44px; opacity: 0; }
}

.pin-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--tech-cyan);
  border: 3px solid #0e121a;
  box-shadow: 0 0 12px var(--tech-cyan-glow);
  transition: transform var(--transition-fast), background var(--transition-fast);
}
.hotspot-pin:hover .pin-dot {
  transform: scale(1.4);
  background: #fff;
}

.hotspot-pin.active .pin-dot {
  background: var(--action-orange);
  box-shadow: 0 0 14px var(--action-orange-glow);
}
.hotspot-pin.active .pin-pulse {
  border-color: var(--action-orange);
}

/* Hover Card on Hotspot */
.pin-card {
  position: absolute;
  bottom: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: rgba(14, 18, 26, 0.95);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  min-width: 210px;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-fast);
  backdrop-filter: blur(12px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6);
}
.pin-card::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 6px;
  border-style: solid;
  border-color: var(--border-active) transparent transparent transparent;
}
.hotspot-pin:hover .pin-card {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.pin-tag {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--tech-cyan);
  font-weight: 700;
  display: block;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}
.pin-card strong {
  display: block;
  font-size: 13px;
  color: #fff;
  line-height: 1.3;
}
.pin-card p {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 2px;
}

/* Assembly Callout Box (Bottom overlay on stage) */
.assembly-callout {
  position: absolute;
  bottom: 20px;
  right: 20px;
  background: rgba(14, 18, 26, 0.92);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  max-width: 380px;
  backdrop-filter: blur(12px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
  transform: translateY(10px);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
  z-index: 20;
}
.assembly-callout.show {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
  border-color: var(--tech-cyan);
}

.callout-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.callout-step {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--tech-cyan);
  letter-spacing: 0.5px;
}
.callout-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 18px;
  cursor: pointer;
  line-height: 1;
}
.callout-close:hover { color: #fff; }

.assembly-callout h4 {
  font-size: 14px;
  color: #fff;
  font-weight: 700;
  margin-bottom: 8px;
}
.callout-specs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.spec-chip {
  font-size: 10px;
  font-family: var(--font-mono);
  padding: 2px 7px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
  color: var(--text-muted);
}
.spec-chip.highlight {
  background: rgba(0, 229, 255, 0.15);
  color: var(--tech-cyan);
  border: 1px solid rgba(0, 229, 255, 0.3);
}
.assembly-callout p {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.45;
}

/* BEFORE / AFTER COMPARISON SLIDER */
.compare-slider-container {
  display: none;
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  user-select: none;
}
.compare-slider-container.show {
  display: block;
}

.compare-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.compare-img {
  max-width: 90%;
  max-height: 85%;
  object-fit: contain;
  user-select: none;
  pointer-events: none;
}

.compare-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 100%;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  border-right: 2px solid var(--tech-cyan);
}
.compare-overlay .stock-cam {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  max-width: none;
  width: auto;
  height: 85%;
}

.slider-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 40px;
  transform: translateX(-50%);
  cursor: ew-resize;
  display: flex;
  align-items: center;
  justify-content: center;
}
.handle-line {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--tech-cyan);
  box-shadow: 0 0 10px var(--tech-cyan);
}
.handle-circle {
  position: relative;
  z-index: 2;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #0e121a;
  border: 2px solid var(--tech-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--tech-cyan);
  box-shadow: 0 0 16px var(--tech-cyan-glow);
}

.compare-labels {
  position: absolute;
  bottom: 20px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  padding: 0 30px;
  pointer-events: none;
}
.label-left, .label-right {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 4px;
  background: rgba(14, 18, 26, 0.8);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(8px);
}
.label-left { color: var(--text-muted); }
.label-right { color: var(--tech-cyan); border-color: rgba(0, 229, 255, 0.3); }

/* STAGE FOOTER & STATS */
.stage-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 14px 20px;
}

.rig-specs-summary {
  display: flex;
  gap: 24px;
}
.spec-box {
  display: flex;
  flex-direction: column;
}
.spec-lbl {
  font-size: 10px;
  font-family: var(--font-mono);
  color: var(--text-dim);
  letter-spacing: 0.5px;
}
.spec-val {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
}
.spec-val small {
  font-size: 11px;
  color: var(--text-dim);
  font-weight: normal;
}
.spec-val.price-highlight {
  color: var(--action-orange);
  font-family: var(--font-mono);
}

.stage-action-buttons {
  display: flex;
  gap: 10px;
}

.btn-action-tool {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}
.btn-action-tool:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.2);
}
.btn-action-tool.primary {
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.2), rgba(0, 229, 255, 0.05));
  border-color: var(--tech-cyan);
  color: var(--tech-cyan);
}
.btn-action-tool.primary:hover {
  background: var(--tech-cyan);
  color: #000;
  box-shadow: 0 4px 14px var(--tech-cyan-glow);
}

/* =========================================================
   RIGHT SIDEBAR: ACCESSORY CATALOG & BUILD SUMMARY
   ========================================================= */
.header-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}
.compatible-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--success-green);
  background: rgba(16, 185, 129, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

/* Filter Chips */
.acc-filter-chips {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 10px;
  margin-bottom: 12px;
  scrollbar-width: none;
}
.acc-filter-chips::-webkit-scrollbar { display: none; }

.chip {
  padding: 5px 11px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition-fast);
}
.chip:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.2);
}
.chip.active {
  background: var(--tech-cyan);
  color: #000;
  font-weight: 700;
  border-color: var(--tech-cyan);
}

/* ACCESSORIES LIST SCROLL */
.accessories-list-scroll {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 480px;
  overflow-y: auto;
  padding-right: 4px;
}
.accessories-list-scroll::-webkit-scrollbar {
  width: 5px;
}
.accessories-list-scroll::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

/* Accessory Card Item */
.accessory-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: var(--transition-fast);
  position: relative;
}
.accessory-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.18);
  transform: translateY(-2px);
}
.accessory-card.installed {
  border-color: var(--tech-cyan);
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.08), rgba(0, 229, 255, 0.01));
}

.acc-main-row {
  display: flex;
  gap: 12px;
  align-items: center;
}

.acc-thumb-wrapper {
  position: relative;
  width: 68px;
  height: 68px;
  border-radius: var(--radius-sm);
  background: #000;
  overflow: hidden;
  flex-shrink: 0;
  border: 1px solid var(--border-subtle);
}
.acc-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-fast);
}
.accessory-card:hover .acc-thumb {
  transform: scale(1.08);
}

.acc-info {
  flex: 1;
  min-width: 0;
}
.acc-slot-tag {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  color: var(--tech-cyan);
  letter-spacing: 0.5px;
  margin-bottom: 2px;
  display: inline-block;
}
.acc-title {
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.acc-specs-inline {
  font-size: 11px;
  color: var(--text-dim);
}

.acc-bottom-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.acc-price {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--action-orange);
}

.btn-toggle-accessory {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid var(--border-subtle);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  transition: var(--transition-fast);
}
.btn-toggle-accessory:hover {
  background: var(--tech-cyan);
  color: #000;
  border-color: var(--tech-cyan);
}
.accessory-card.installed .btn-toggle-accessory {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.4);
  color: #ef4444;
}
.accessory-card.installed .btn-toggle-accessory:hover {
  background: #ef4444;
  color: #fff;
}

/* BUILD SUMMARY DRAWER */
.build-summary-card {
  margin-top: 20px;
  background: linear-gradient(180deg, #121722 0%, #0d1118 100%);
  border-color: rgba(0, 229, 255, 0.2);
}

.build-items-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 80px;
  max-height: 200px;
  overflow-y: auto;
  margin-bottom: 14px;
}

.empty-build-msg {
  padding: 16px 8px;
  text-align: center;
  font-size: 12px;
  color: var(--text-dim);
  border: 1px dashed rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
}

.build-item-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-sm);
  font-size: 12px;
}
.build-item-title {
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 170px;
}
.build-item-price {
  font-family: var(--font-mono);
  color: var(--action-orange);
  font-weight: 600;
}
.build-item-remove {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 14px;
}
.build-item-remove:hover { color: #ef4444; }

.build-checkout-box {
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
}
.total-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  font-size: 13px;
  color: var(--text-muted);
}
.total-price-text {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 800;
  color: var(--action-orange);
}

.btn-buy-full-rig {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 12px;
  background: linear-gradient(135deg, #ee4d2d, #ff5722);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(238, 77, 45, 0.35);
  transition: var(--transition-fast);
}
.btn-buy-full-rig:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 22px rgba(238, 77, 45, 0.5);
}

/* =========================================================
   MODAL: INSTALLATION GUIDE
   ========================================================= */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
}
.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background: #111622;
  border: 1px solid rgba(0, 229, 255, 0.3);
  border-radius: var(--radius-lg);
  max-width: 680px;
  width: 100%;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8), 0 0 30px rgba(0, 229, 255, 0.1);
  overflow: hidden;
  transform: scale(0.95);
  transition: var(--transition-smooth);
}
.modal-backdrop.open .modal-card {
  transform: scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-subtle);
}
.modal-title .badge-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--tech-cyan);
  letter-spacing: 1px;
}
.modal-title h3 {
  font-size: 18px;
  color: #fff;
  font-weight: 800;
  margin-top: 2px;
}
.modal-close-btn {
  background: transparent;
  border: none;
  font-size: 26px;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
}
.modal-close-btn:hover { color: #fff; }

.modal-body {
  padding: 24px;
  max-height: 60vh;
  overflow-y: auto;
}

.guide-steps-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.guide-step-card {
  display: flex;
  gap: 16px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}
.step-num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 800;
  color: var(--tech-cyan);
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.step-content h4 {
  font-size: 15px;
  color: #fff;
  margin-bottom: 6px;
}
.step-content p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 8px;
}
.step-meta {
  display: flex;
  gap: 14px;
  font-size: 11px;
  color: var(--text-dim);
}
.step-meta strong {
  color: var(--text-main);
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: flex-end;
}
.btn-modal-close {
  padding: 10px 20px;
  background: var(--tech-cyan);
  color: #000;
  border: none;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-fast);
}
.btn-modal-close:hover {
  background: #fff;
}

/* =========================================================
   TOAST NOTIFICATION
   ========================================================= */
.tech-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: rgba(14, 18, 26, 0.95);
  border: 1px solid var(--tech-cyan);
  border-radius: var(--radius-full);
  padding: 10px 22px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8), 0 0 20px var(--tech-cyan-glow);
  backdrop-filter: blur(12px);
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
}
.tech-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  visibility: visible;
}
.toast-icon {
  color: var(--tech-cyan);
}

/* =========================================================
   RESPONSIVE DESIGN (TABLET & MOBILE)
   ========================================================= */
@media (max-width: 900px) {
  .stage-viewport {
    height: 440px;
  }
  .stage-footer {
    flex-direction: column;
    align-items: stretch;
  }
  .rig-specs-summary {
    justify-content: space-between;
  }
}