/* ==========================================================================
   7CGI 3D Product Viewer - Tony Bianco Project
   Styles for Babylon.js Canvas, UI Controls, and Loading Overlay
   ========================================================================== */

:root {
  --viewer-bg: #f4f0e9;
  --viewer-ink: #111111;
  --viewer-accent: #ff6f00;
  --viewer-accent-hover: #e66400;
  --viewer-glass: rgba(244, 240, 233, 0.62);
  --viewer-glass-border: rgba(17, 17, 17, 0.12);
  --viewer-radius: 0px;
  --viewer-shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--viewer-bg);
  color: var(--viewer-ink);
}

.viewer-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--viewer-bg);
  user-select: none;
  -webkit-user-select: none;
}

/* Babylon Render Canvas */
#renderCanvas {
  width: 100%;
  height: 100%;
  display: block;
  outline: none;
  touch-action: none;
  cursor: grab;
}

#renderCanvas:active {
  cursor: grabbing;
}

/* Loading Overlay */
.viewer-loader {
  position: absolute;
  inset: 0;
  background: var(--viewer-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 20;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.viewer-loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.spinner {
  width: 44px;
  height: 44px;
  border: 3px solid rgba(17, 17, 17, 0.12);
  border-top-color: var(--viewer-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loader-text {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--viewer-ink);
  opacity: 0.85;
  text-transform: uppercase;
}

.loader-progress {
  width: 160px;
  height: 4px;
  background: rgba(17, 17, 17, 0.1);
  border-radius: 0;
  overflow: hidden;
  position: relative;
}

.loader-bar {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0%;
  background: var(--viewer-accent);
  transition: width 0.2s ease;
}

/* ==========================================================================
   Idea 1: Persistent 3D Interactive Badge (Top-Left)
   ========================================================================== */
.viewer-badge-3d {
  position: absolute;
  top: 16px;
  left: 16px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(244, 240, 233, 0.65);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(17, 17, 17, 0.12);
  padding: 6px 11px;
  border-radius: var(--viewer-radius);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
  pointer-events: none;
  z-index: 10;
  user-select: none;
}

.badge-pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--viewer-accent);
  box-shadow: 0 0 0 0 rgba(255, 111, 0, 0.6);
  animation: pulse-badge-orange 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse-badge-orange {
  0% {
    box-shadow: 0 0 0 0 rgba(255, 111, 0, 0.6);
  }
  70% {
    box-shadow: 0 0 0 6px rgba(255, 111, 0, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(255, 111, 0, 0);
  }
}

.badge-cube-icon {
  width: 14px;
  height: 14px;
  stroke: var(--viewer-ink);
}

.badge-text {
  font-size: 10.5px;
  font-weight: 750;
  letter-spacing: 0.08em;
  color: var(--viewer-ink);
  text-transform: uppercase;
}

/* ==========================================================================
   Idea 2: Smart Center 360 Gesture Hint (Fades out when user interacts)
   ========================================================================== */
.viewer-center-hint {
  position: absolute;
  top: 48%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 12;
  user-select: none;
  transition: opacity 0.5s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1), visibility 0.5s ease;
}

.viewer-center-hint.hidden {
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, -50%) scale(0.92);
}

.center-hint-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  background: rgba(244, 240, 233, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(17, 17, 17, 0.12);
  padding: 10px 18px;
  border-radius: var(--viewer-radius);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.center-hint-visual {
  display: flex;
  align-items: center;
  gap: 12px;
}

.hint-arrow {
  width: 15px;
  height: 15px;
  stroke: var(--viewer-accent);
}

.hint-arrow-left {
  animation: hint-sway-left 2s ease-in-out infinite;
}

.hint-arrow-right {
  animation: hint-sway-right 2s ease-in-out infinite;
}

@keyframes hint-sway-left {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(-4px); }
}

@keyframes hint-sway-right {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(4px); }
}

.hint-orbit-wrap {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(255, 255, 255, 0.45);
  border: 1px solid rgba(17, 17, 17, 0.08);
  padding: 4px 8px;
  border-radius: var(--viewer-radius);
  color: var(--viewer-ink);
}

.hint-orbit-svg {
  width: 15px;
  height: 15px;
  stroke: var(--viewer-ink);
}

.hint-orbit-text {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.center-hint-label {
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.1em;
  color: var(--viewer-ink);
  opacity: 0.85;
  text-transform: uppercase;
}

/* Control Toolbar (Bottom Floating Bar) */
.viewer-controls {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(244, 240, 233, 0.62);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(17, 17, 17, 0.12);
  padding: 5px 8px;
  border-radius: var(--viewer-radius);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
  z-index: 10;
}

.ctrl-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.40);
  border: 1px solid rgba(17, 17, 17, 0.08);
  padding: 7px 12px;
  border-radius: var(--viewer-radius);
  color: var(--viewer-ink);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.ctrl-btn svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  transition: transform 0.2s ease;
}

.ctrl-btn:hover {
  background: rgba(255, 255, 255, 0.85);
  border-color: rgba(255, 111, 0, 0.35);
  color: var(--viewer-accent);
}

.ctrl-btn.active {
  background: var(--viewer-accent);
  border-color: var(--viewer-accent);
  color: #fff;
}

.ctrl-btn.active:hover {
  background: var(--viewer-accent-hover);
  border-color: var(--viewer-accent-hover);
}

.ctrl-divider {
  width: 1px;
  height: 18px;
  background: rgba(17, 17, 17, 0.12);
  margin: 0 2px;
}

/* Error Message Banner */
.viewer-error {
  position: absolute;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: #ffedea;
  color: #d32f2f;
  border: 1px solid #ffcdd2;
  padding: 10px 18px;
  border-radius: 0;
  font-size: 12px;
  font-weight: 500;
  z-index: 15;
  display: none;
  text-align: center;
  max-width: 90%;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

/* Mobile responsive adjustments */
@media (max-width: 600px) {
  .viewer-badge-3d {
    top: 10px;
    left: 10px;
    padding: 4px 8px;
    gap: 5px;
  }
  .badge-text {
    font-size: 9px;
    letter-spacing: 0.06em;
  }
  .badge-cube-icon {
    width: 12px;
    height: 12px;
  }
  .badge-pulse-dot {
    width: 5px;
    height: 5px;
  }
  .center-hint-box {
    padding: 8px 14px;
    gap: 5px;
  }
  .hint-arrow {
    width: 12px;
    height: 12px;
  }
  .hint-orbit-svg {
    width: 13px;
    height: 13px;
  }
  .hint-orbit-text {
    font-size: 10px;
  }
  .center-hint-label {
    font-size: 8.5px;
  }
  .viewer-controls {
    bottom: 14px;
    padding: 4px 6px;
    gap: 4px;
  }
  .ctrl-btn {
    padding: 6px 10px;
    font-size: 11px;
  }
  .ctrl-btn span.btn-label {
    display: none;
  }
}