/* ==========================================================================
   DIZZYDOCTOR® GOGGLES 3D PRODUCT PREVIEW
   Lightweight Three.js intro / interactive viewer (no CAD download UI)
   ========================================================================== */

:root {
  --goggles-bg: #06111a;
  --goggles-surface: #0a1b28;
  --goggles-card: rgba(10, 27, 40, 0.85);
  --goggles-border: rgba(62, 172, 184, 0.22);
  --goggles-accent: #55d5c5;
  --goggles-green: #2ecc71;
  --goggles-amber: #f0ac7f;
  --goggles-text: #e2f0f4;
  --goggles-muted: #8ca3af;
}

/* Container for Scroll-Driven Stage */
.dd-goggles-stage {
  position: relative;
  background: radial-gradient(circle at 50% 30%, #0d2233 0%, var(--goggles-bg) 75%);
  color: var(--goggles-text);
  overflow: clip;
}

/* Sticky viewport that stays pinned during scroll */
.dd-goggles-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100dvh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  z-index: 2;
}

/* Three.js Canvas Container */
.dd-goggles-viewport {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  cursor: grab;
  touch-action: pan-y;
}

.dd-goggles-viewport:active {
  cursor: grabbing;
}

.dd-goggles-viewport canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
  outline: none;
}

/* Background Atmosphere Grid & Vignette */
.dd-goggles-backdrop {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: 
    radial-gradient(ellipse 70% 50% at 50% 50%, rgba(85, 213, 197, 0.08), transparent 75%),
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 100% 100%, 48px 48px, 48px 48px;
  background-position: center center;
  opacity: 0.7;
}

/* Top Telemetry Header Bar */
.dd-goggles-hud-bar {
  position: absolute;
  top: clamp(80px, 12vh, 100px);
  left: clamp(16px, 4vw, 48px);
  right: clamp(16px, 4vw, 48px);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  pointer-events: none;
  z-index: 10;
}

.dd-goggles-hud-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  background: rgba(6, 17, 26, 0.82);
  border: 1px solid var(--goggles-border);
  border-radius: 999px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  font: 600 0.72rem/1 var(--tr-font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--goggles-accent);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
  pointer-events: auto;
}

.dd-goggles-hud-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--goggles-green);
  box-shadow: 0 0 8px var(--goggles-green);
  animation: ddGogglesPulse 2s infinite ease-in-out;
}

@keyframes ddGogglesPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.dd-goggles-hud-controls {
  display: flex;
  gap: 10px;
  pointer-events: auto;
}

.dd-goggles-mode-btn {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: rgba(10, 27, 40, 0.85);
  border: 1px solid var(--goggles-border);
  border-radius: 8px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font: 600 0.72rem/1 var(--tr-font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #b0c9d2;
  transition: all 220ms ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.dd-goggles-mode-btn:hover {
  border-color: var(--goggles-accent);
  color: #ffffff;
  transform: translateY(-1px);
}

.dd-goggles-mode-btn.is-active {
  background: rgba(85, 213, 197, 0.16);
  border-color: var(--goggles-accent);
  color: #ffffff;
  box-shadow: 0 0 16px rgba(85, 213, 197, 0.25);
}

/* Photo-intro: side-by-side with gap on desktop; stacked with gap on mobile */
.dd-goggles-stage--photos {
  min-height: auto;
  overflow: hidden;
}

.dd-goggles-photo-intro {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: clamp(1.25rem, 3vw, 2rem);
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(4.5rem, 9vh, 6.5rem) clamp(1rem, 3vw, 1.5rem) 2.5rem;
  box-sizing: border-box;
}

.dd-goggles-photo-intro__media {
  position: relative;
  width: 100%;
  min-width: 0;
  aspect-ratio: 16 / 10;
  min-height: 0;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(85, 213, 197, 0.28);
  background: #02090e;
}

/* Floating Callout Card on the left/bottom (3D/sticky stages) */
.dd-goggles-callout {
  position: absolute;
  bottom: clamp(24px, 6vh, 48px);
  left: clamp(16px, 4vw, 48px);
  max-width: min(440px, 92vw);
  background: rgba(6, 17, 26, 0.88);
  border: 1px solid rgba(85, 213, 197, 0.3);
  border-radius: 16px;
  padding: 24px 26px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 
    0 16px 40px rgba(0, 0, 0, 0.6),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  z-index: 10;
  transition: opacity 300ms ease, transform 300ms ease;
  pointer-events: auto;
  box-sizing: border-box;
}

/* Inline callout: sibling of photo, never overlays media */
.dd-goggles-callout--inline {
  position: relative;
  inset: auto;
  left: auto;
  bottom: auto;
  width: 100%;
  min-width: 0;
  max-width: none;
  margin: 0;
  overflow: visible;
}

@media (min-width: 900px) {
  .dd-goggles-photo-intro {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(1.75rem, 3.5vw, 2.75rem);
  }

  .dd-goggles-callout--inline {
    align-self: center;
  }

  .dd-goggles-photo-intro__media {
    aspect-ratio: 4 / 3;
  }
}

.dd-goggles-callout__stage-num {
  display: inline-block;
  font: 700 0.68rem/1.2 var(--tr-font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--goggles-accent);
  margin-bottom: 8px;
}

.dd-goggles-callout__title {
  font-family: var(--tr-font-display);
  font-size: clamp(1.25rem, 1.8vw, 1.55rem);
  font-weight: 500;
  line-height: 1.25;
  color: #ffffff;
  margin: 0 0 10px;
  overflow-wrap: break-word;
}

.dd-goggles-callout__desc {
  font-size: 0.88rem;
  line-height: 1.6;
  color: #bdd1d8;
  margin: 0 0 16px;
  overflow-wrap: break-word;
  word-wrap: break-word;
  max-width: 100%;
}

.dd-goggles-callout__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.dd-goggles-callout__hint {
  font: 500 0.7rem/1.35 var(--tr-font-mono);
  color: var(--goggles-muted);
  letter-spacing: 0.05em;
  min-width: 0;
  flex: 1 1 auto;
}

.dd-goggles-callout__action {
  font: 700 0.74rem/1.2 var(--tr-font-sans);
  color: var(--goggles-accent);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex: 0 0 auto;
  white-space: nowrap;
  transition: transform 200ms ease;
}

.dd-goggles-callout__action:hover {
  transform: translateX(3px);
  color: #8affef;
}

/* Interactive 3D Hotspot Markers in Screen Space */
.dd-goggles-hotspot {
  position: absolute;
  transform: translate(-50%, -50%);
  pointer-events: auto;
  cursor: pointer;
  z-index: 15;
  display: flex;
  align-items: center;
  gap: 8px;
  opacity: 0;
  transition: opacity 300ms ease, transform 300ms ease;
}

.dd-goggles-hotspot.is-visible {
  opacity: 1;
}

.dd-goggles-hotspot__pin {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(85, 213, 197, 0.25);
  border: 2px solid var(--goggles-accent);
  box-shadow: 0 0 12px var(--goggles-accent);
  display: grid;
  place-items: center;
  transition: transform 250ms ease, background 250ms ease;
}

.dd-goggles-hotspot__pin::after {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #ffffff;
}

.dd-goggles-hotspot:hover .dd-goggles-hotspot__pin {
  transform: scale(1.2);
  background: var(--goggles-accent);
}

.dd-goggles-hotspot__label {
  background: rgba(6, 17, 26, 0.9);
  border: 1px solid rgba(85, 213, 197, 0.4);
  border-radius: 6px;
  padding: 4px 9px;
  font: 600 0.68rem/1.2 var(--tr-font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #ffffff;
  white-space: nowrap;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.5);
  opacity: 0.9;
  transition: all 250ms ease;
}

.dd-goggles-hotspot:hover .dd-goggles-hotspot__label {
  opacity: 1;
  border-color: var(--goggles-accent);
  color: var(--goggles-accent);
}

/* Scroll Progress Track (Hidden height driving the scroll animation) */
.dd-goggles-scroll-track {
  height: 380vh;
  position: relative;
  pointer-events: none;
}

/* Bottom Progress Indicator Bar */
.dd-goggles-progress-rail {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: rgba(255, 255, 255, 0.08);
  z-index: 20;
}

.dd-goggles-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #036c5f, var(--goggles-accent), #f0ac7f);
  box-shadow: 0 0 10px var(--goggles-accent);
  transition: width 100ms linear;
}

/* Technical Specifications Section */
.dd-goggles-specs-section {
  background: var(--goggles-bg);
  padding: clamp(4rem, 8vw, 7rem) 1.5rem;
  border-top: 1px solid var(--goggles-border);
  position: relative;
  z-index: 5;
}

.dd-goggles-specs-inner {
  max-width: 1180px;
  margin: 0 auto;
}

.dd-goggles-specs-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
  margin-top: 2.5rem;
}

.dd-goggles-spec-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.dd-goggles-spec-item {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 1.25rem;
  transition: border-color 250ms ease, transform 250ms ease;
}

.dd-goggles-spec-item:hover {
  border-color: rgba(85, 213, 197, 0.35);
  transform: translateY(-2px);
}

.dd-goggles-spec-item__label {
  font: 600 0.72rem/1 var(--tr-font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--goggles-accent);
  margin-bottom: 0.5rem;
}

.dd-goggles-spec-item__value {
  font-family: var(--tr-font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: #ffffff;
  line-height: 1.25;
  margin-bottom: 0.35rem;
}

.dd-goggles-spec-item__note {
  font-size: 0.8rem;
  line-height: 1.45;
  color: #8ca2ad;
  margin: 0;
}

/* Specs sidebar product card */
.dd-goggles-download-card {
  background: linear-gradient(135deg, rgba(11, 31, 46, 0.95) 0%, rgba(6, 17, 26, 0.98) 100%);
  border: 1px solid rgba(85, 213, 197, 0.35);
  border-radius: 20px;
  padding: clamp(1.8rem, 3.5vw, 2.4rem);
  box-shadow: 
    0 16px 40px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
  position: relative;
  overflow: hidden;
}

.dd-goggles-download-card::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(85, 213, 197, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.dd-goggles-download-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font: 700 0.7rem/1 var(--tr-font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #eea676;
  margin-bottom: 1rem;
}

.dd-goggles-download-title {
  font-family: var(--tr-font-display);
  font-size: clamp(1.4rem, 2vw, 1.75rem);
  font-weight: 500;
  color: #ffffff;
  margin: 0 0 0.85rem;
  line-height: 1.25;
}

.dd-goggles-download-desc {
  font-size: 0.88rem;
  line-height: 1.65;
  color: #bdd1d8;
  margin-bottom: 1.5rem;
}

.dd-goggles-download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 14px 22px;
  background: linear-gradient(135deg, #036c5f 0%, #009aa9 100%);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  color: #ffffff !important;
  font-family: var(--tr-font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  box-shadow: 0 8px 24px rgba(3, 108, 95, 0.4);
  transition: all 250ms ease;
}

.dd-goggles-download-btn:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, #008796 0%, #036c5f 100%);
  box-shadow: 0 12px 30px rgba(0, 164, 180, 0.5);
}

.dd-goggles-download-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1.2rem;
  font: 500 0.72rem/1.3 var(--tr-font-mono);
  color: #8da2ad;
}

@media (max-width: 991px) {
  .dd-goggles-specs-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 640px) {
  .dd-goggles-spec-list {
    grid-template-columns: 1fr;
  }
  .dd-goggles-hud-bar {
    top: 70px;
  }
  .dd-goggles-mode-btn span:last-child {
    display: none;
  }
}