/* ════════════════════════════════════════
   VISOR 3D — Three.js Viewer Styles
   ════════════════════════════════════════ */

#visor-3d {
  padding: clamp(3rem, 6vw, 5rem) 0;
  padding-bottom: 0;
  background: var(--pure-white);
}

.visor-3d-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.visor-3d-header .section-label {
  justify-content: center;
  margin-bottom: 1rem;
}

.visor-3d-header h2 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.visor-3d-header h2 em.handwritten {
  color: var(--accent-gold);
}

.visor-3d-header p {
  max-width: 500px;
  margin: 0 auto;
  color: var(--slate-gray);
  font-size: 1.05rem;
  line-height: 1.6;
}

/* Model Selector */
.model-selector {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.model-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--pure-white);
  border: 1.5px solid var(--border-light);
  border-radius: 50px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.25s ease;
}

.model-btn:hover {
  border-color: var(--royal-blue);
  color: var(--royal-blue);
}

.model-btn.active {
  background: var(--royal-blue);
  border-color: var(--royal-blue);
  color: white;
}

.model-icon {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Three.js Container */
.three-viewer-container {
  position: relative;
  width: 100%;
  max-width: 1000px;
  min-height: 400px;
  height: 60vh;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--pure-white);
  border: 1px solid var(--border-light);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.08);
}

.three-viewer-container canvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* Loader */
.viewer-loader {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(248, 248, 244, 0.95);
  z-index: 10;
  gap: 1rem;
}

.viewer-loader.hidden {
  display: none;
}

.loader-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-light);
  border-top-color: var(--royal-blue);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.viewer-loader span {
  font-size: 0.9rem;
  color: var(--slate-gray);
  font-weight: 500;
}

/* Hotspots */
.viewer-hotspot {
  position: absolute;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  transform: translate(-50%, -50%);
  z-index: 20;
  padding: 0;
}

.hotspot-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: var(--dot-color, var(--accent-gold));
  box-shadow: 0 0 0 0 rgba(220, 255, 0, 0.5);
  animation: hotspot-pulse 2s infinite;
  position: relative;
  z-index: 1;
  transition: transform 0.2s ease;
}

@keyframes hotspot-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(220, 255, 0, 0.5); }
  70%  { box-shadow: 0 0 0 15px rgba(220, 255, 0, 0); }
  100% { box-shadow: 0 0 0 0 rgba(220, 255, 0, 0); }
}

.viewer-hotspot:hover .hotspot-dot {
  transform: scale(1.3);
}

.hotspot-card {
  background: rgba(15, 20, 36, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(220, 255, 0, 0.3);
  border-radius: 10px;
  padding: 10px 14px;
  min-width: 160px;
  max-width: 240px;
  position: absolute;
  left: 28px;
  top: -10px;
  pointer-events: none;
  opacity: 0;
  transform: translateX(-8px) scale(0.95);
  transition: opacity 0.25s ease, transform 0.25s ease;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  white-space: normal;
  text-align: left;
}

.hotspot-card::before {
  content: '';
  position: absolute;
  left: -6px;
  top: 14px;
  width: 12px;
  height: 12px;
  background: rgba(15, 20, 36, 0.95);
  border-left: 1px solid rgba(220, 255, 0, 0.3);
  border-bottom: 1px solid rgba(220, 255, 0, 0.3);
  transform: rotate(45deg);
}

.viewer-hotspot:hover .hotspot-card,
.viewer-hotspot:focus .hotspot-card {
  opacity: 1;
  transform: translateX(0) scale(1);
  pointer-events: auto;
}

.hotspot-label {
  display: block;
  color: var(--accent-gold);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.hotspot-content {
  color: #e2e8f0;
  font-size: 0.8rem;
  line-height: 1.4;
  margin: 0;
}

/* Instructions */
.viewer-instructions {
  text-align: center;
  margin-top: 1.5rem;
  margin-bottom: 1.5rem;
}

.viewer-instructions span {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--slate-gray);
  background: var(--bg-light);
  padding: 0.5rem 1rem;
  border-radius: 50px;
}

/* Responsive */
@media (max-width: 768px) {
  .three-viewer-container {
    min-height: 300px;
    height: 50vh;
    border-radius: var(--radius-md);
  }

  .model-btn {
    padding: 0.6rem 1rem;
    font-size: 0.85rem;
  }
}

@media (max-width: 480px) {
  .three-viewer-container {
    min-height: 250px;
    height: 45vh;
  }

  .model-selector {
    gap: 0.5rem;
  }
}

/* ════════════════════════════════════════
   View Control Buttons
   ════════════════════════════════════════ */

.viewer-controls {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
  padding: 0.5rem;
  background: rgba(15, 20, 36, 0.85);
  backdrop-filter: blur(10px);
  border-radius: 50px;
  z-index: 30;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.view-control-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: rgba(255, 255, 255, 0.7);
  cursor: pointer;
  transition: all 0.25s ease;
}

.view-control-btn:hover {
  background: rgba(220, 255, 0, 0.15);
  border-color: var(--accent-gold);
  color: var(--accent-gold);
  transform: translateY(-2px);
}

.view-control-btn:active {
  transform: translateY(0) scale(0.95);
}

.view-control-btn svg {
  width: 16px;
  height: 16px;
}

/* Tooltip for buttons */
.view-control-btn[title]:hover::after {
  content: attr(title);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 10px;
  background: rgba(15, 20, 36, 0.95);
  color: white;
  font-size: 0.7rem;
  font-weight: 500;
  white-space: nowrap;
  border-radius: 4px;
  pointer-events: none;
  opacity: 0;
  animation: tooltip-fade-in 0.2s ease forwards;
}

@keyframes tooltip-fade-in {
  to { opacity: 1; }
}

/* Active state indication */
.view-control-btn.active {
  background: var(--accent-gold);
  border-color: var(--accent-gold);
  color: var(--text-primary);
}

/* Mobile adjustments */
@media (max-width: 480px) {
  .viewer-controls {
    bottom: 0.5rem;
    padding: 0.4rem;
    gap: 0.4rem;
  }

  .view-control-btn {
    width: 32px;
    height: 32px;
  }

  .view-control-btn svg {
    width: 14px;
    height: 14px;
  }
}

/* ════════════════════════════════════════
   Fullscreen Button
   ════════════════════════════════════════ */

.fullscreen-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  background: rgba(15, 20, 36, 0.8);
  backdrop-filter: blur(8px);
  border: 1.5px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  color: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  z-index: 30;
  transition: all 0.25s ease;
}

.fullscreen-btn:hover {
  background: rgba(220, 255, 0, 0.2);
  border-color: var(--accent-gold);
  color: var(--accent-gold);
  transform: scale(1.05);
}

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

.fullscreen-btn svg {
  transition: transform 0.2s ease;
}

.fullscreen-btn:hover svg {
  transform: scale(1.1);
}

/* Fullscreen state */
.three-viewer-container.is-fullscreen {
  border-radius: 0;
  width: 100vw !important;
  height: 100vh !important;
  max-width: 100vw;
  max-height: 100vh;
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  z-index: 9999;
  background: #000 !important;
  padding: 0 !important;
  margin: 0 !important;
  overflow: hidden !important;
}

.three-viewer-container.is-fullscreen canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
  cursor: grab;
}

.three-viewer-container.is-fullscreen canvas:active {
  cursor: grabbing;
}

.three-viewer-container.is-fullscreen .fullscreen-btn {
  top: 1.5rem;
  right: 1.5rem;
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
  color: white;
}

.three-viewer-container.is-fullscreen .fullscreen-btn:hover {
  background: rgba(220, 255, 0, 0.3);
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

.three-viewer-container.is-fullscreen .viewer-controls {
  bottom: 1.5rem;
}