/* Quantrex figure host + zoom button + professional lightbox */

/* Keep figures card-free */
#qxDiagramSlot,
.qx-diagram-slot,
.qx-opt-diagram-slot,
.qx-fig,
.qx-pool-fig-wrap,
.qx-fig-host {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
}

/* Host for floating Zoom button — never collapse / hide question text */
.qx-fig-host {
  position: relative !important;
  display: block !important;
  max-width: 100% !important;
  width: fit-content !important;
  margin: 10px auto !important;
  line-height: 0 !important;
  vertical-align: middle !important;
  border-radius: 12px;
  overflow: visible !important;
  min-height: 0 !important;
  /* do not use transforms that clip siblings */
  transform: none !important;
}

/* Marks-style plain figure (no zoom chrome) */
.qx-fig-host > img,
img.qx-fig-clickable,
img.qx-pool-fig,
img.qx-marks-native-fig {
  max-width: min(100%, 560px) !important;
  max-height: min(380px, 50vh) !important;
  width: auto !important;
  height: auto !important;
  display: block !important;
  margin: 8px auto !important;
  object-fit: contain !important;
  cursor: default !important;
  border-radius: 4px;
  background: #fff !important;
  padding: 4px;
  box-shadow: none !important;
  transform: none !important;
  opacity: 1 !important;
  visibility: visible !important;
}

.mtk-opt-text .qx-fig-host > img,
.qx-prac-opt-text .qx-fig-host > img,
.mtk-opt-text img.qx-fig-clickable,
.qx-prac-opt-text img.qx-fig-clickable {
  max-height: min(300px, 42vh) !important;
  max-width: 100% !important;
}

/* Zoom button REMOVED — Marks website style (plain figures only) */
button.qx-fig-zoom-btn,
.qx-fig-zoom-btn,
.qx-diag-btn,
.qx-diag-toolbar,
.qx-diagram-badge,
.qx-diag-zoom-btns {
  display: none !important;
  visibility: hidden !important;
  opacity: 0 !important;
  pointer-events: none !important;
  width: 0 !important;
  height: 0 !important;
  overflow: hidden !important;
  position: absolute !important;
  left: -9999px !important;
}

.qx-fig-zoom-btn:hover,
button.qx-fig-zoom-btn:hover {
  transform: scale(1.06) !important;
  box-shadow: 0 6px 18px rgba(13, 148, 136, 0.5) !important;
  background: linear-gradient(135deg, #14b8a6 0%, #0d9488 100%) !important;
}

.qx-fig-zoom-btn:active {
  transform: scale(0.97) !important;
}

.qx-fig-zoom-btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  display: block;
}

.qx-fig-zoom-btn .qx-z-lbl {
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
}

/* Options: slightly smaller pill */
.mtk-opt-text .qx-fig-zoom-btn,
.qx-prac-opt-text .qx-fig-zoom-btn {
  top: 6px !important;
  right: 6px !important;
  min-width: 34px !important;
  height: 32px !important;
  padding: 0 8px !important;
}

.mtk-opt-text .qx-fig-zoom-btn .qx-z-lbl,
.qx-prac-opt-text .qx-fig-zoom-btn .qx-z-lbl {
  display: none;
}

/* ——— Lightbox (clean HD zoom, no watermark) ——— */
.qx-fig-lightbox {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.22s ease, visibility 0.22s ease;
}

.qx-fig-lightbox.qx-lb-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.qx-lb-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 6, 23, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.qx-lb-stage {
  position: relative;
  z-index: 1;
  width: min(98vw, 1280px);
  height: min(94vh, 960px);
  display: flex;
  flex-direction: column;
  animation: qxLbIn 0.22s ease;
}

@keyframes qxLbIn {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.qx-lb-viewport {
  flex: 1;
  position: relative;
  overflow: hidden;
  border-radius: 14px;
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: none;
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

.qx-lb-viewport.qx-lb-dragging {
  cursor: grabbing;
}

.qx-lb-img {
  max-width: 96%;
  max-height: 96%;
  width: auto;
  height: auto;
  object-fit: contain;
  transform-origin: center center;
  transition: opacity 0.18s ease;
  pointer-events: none;
  image-rendering: auto;
  -webkit-user-drag: none;
  background: #fff;
}

.qx-lb-loading {
  position: absolute;
  color: #0f766e;
  font: 600 14px/1.4 system-ui, sans-serif;
  letter-spacing: 0.02em;
  pointer-events: none;
  background: rgba(255, 255, 255, 0.92);
  padding: 10px 16px;
  border-radius: 10px;
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.12);
}

.qx-lb-hint {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  color: #64748b;
  font: 500 12px/1 system-ui, sans-serif;
  background: rgba(255, 255, 255, 0.9);
  padding: 6px 12px;
  border-radius: 999px;
  pointer-events: none;
  white-space: nowrap;
}

.qx-lb-close {
  position: absolute;
  top: -6px;
  right: -6px;
  z-index: 3;
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.9);
  color: #fff;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}

.qx-lb-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  width: 46px;
  height: 46px;
  border: none;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.8);
  color: #fff;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
}

.qx-lb-prev {
  left: -8px;
}
.qx-lb-next {
  right: -8px;
}

.qx-lb-toolbar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.qx-lb-tool {
  min-width: 44px;
  height: 40px;
  padding: 0 14px;
  border: none;
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.88);
  color: #f8fafc;
  font: 700 15px/1 system-ui, sans-serif;
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
}

.qx-lb-tool:hover {
  background: #0d9488;
}

.qx-lb-tool[data-act="in"] {
  background: linear-gradient(135deg, #0d9488, #0f766e);
  min-width: 52px;
}

.qx-lb-counter {
  color: #e2e8f0;
  font: 600 13px/1 system-ui, sans-serif;
  margin-left: 8px;
}

.qx-lb-pct {
  color: #94a3b8;
  font: 600 12px/1 system-ui, sans-serif;
  min-width: 40px;
  text-align: center;
}

/* Lightbox open: lock scroll only — never hide practice question underneath */
body.qx-fig-lb-open {
  overflow: hidden !important;
}
body.qx-fig-lb-open .mtk-main,
body.qx-fig-lb-open .qx-question-body,
body.qx-fig-lb-open .mtk-q-text,
body.qx-fig-lb-open #qaOpts {
  visibility: visible !important;
  opacity: 1 !important;
  display: block !important;
}
/* Question text must never clip when figures/zoom present */
.mtk-test-root .mtk-main {
  overflow-x: hidden !important;
  overflow-y: auto !important;
  max-height: none !important;
}
.mtk-test-root .mtk-q-text,
.mtk-test-root .qx-question-body,
.mtk-test-root .qx-content {
  overflow: visible !important;
  max-height: none !important;
  visibility: visible !important;
  opacity: 1 !important;
  clip: auto !important;
}

@media (max-width: 720px) {
  .qx-lb-stage {
    width: 100vw;
    height: 100vh;
    border-radius: 0;
  }
  .qx-lb-viewport {
    border-radius: 0;
  }
  .qx-lb-close {
    top: 10px;
    right: 10px;
  }
  .qx-lb-prev {
    left: 6px;
  }
  .qx-lb-next {
    right: 6px;
  }
  .qx-fig-zoom-btn {
    min-width: 38px !important;
    height: 34px !important;
  }
  .qx-fig-zoom-btn .qx-z-lbl {
    display: none;
  }
  .qx-lb-hint {
    font-size: 11px;
    bottom: 8px;
  }
}