.terrain-preview-window {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: #d7e0d9;
  cursor: default;
  touch-action: none;
}

.render-overlay {
  position: absolute;
  z-index: 10;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 12px;
  padding: 24px;
  color: #fff;
  background: rgb(25 25 25 / 72%);
  backdrop-filter: blur(7px) saturate(.78);
  opacity: 1;
  text-align: center;
  transition: opacity .18s ease;
}

.render-overlay[hidden],
#renderOverlayRetry[hidden],
#renderOverlayComplete[hidden] {
  display: none !important;
}

.render-overlay.is-global {
  position: fixed;
  z-index: 120;
  inset: 0;
}

.render-overlay.is-closing {
  opacity: 0;
  pointer-events: none;
}

.render-hiker-icon {
  display: block;
  position: relative;
  width: 136px;
  height: 136px;
  filter: drop-shadow(0 8px 14px rgb(0 0 0 / 28%));
}

.render-hiker-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
}

.render-overlay strong,
.render-overlay span {
  max-width: min(430px, 84vw);
  line-height: 1.55;
}

.render-overlay strong {
  color: #fff;
  font-size: 17px;
}

.render-overlay span {
  min-height: 1.5em;
  color: rgb(255 255 255 / 78%);
  font-size: 13px;
}

.render-overlay.is-success #renderOverlayStatus {
  visibility: hidden;
}

.render-overlay.is-error .render-hiker-icon {
  opacity: .72;
  filter: grayscale(.35) drop-shadow(0 8px 14px rgb(0 0 0 / 28%));
  transform: translateY(4px) rotate(-4deg);
}

.render-overlay-complete,
#renderOverlayRetry {
  min-height: 44px;
  padding: 9px 18px;
  border: 1px solid rgb(255 255 255 / 64%);
  border-radius: var(--container-radius);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.render-overlay-complete {
  min-width: min(360px, 82vw);
  color: #fff;
  background: rgb(20 20 20 / 24%);
}

#renderOverlayRetry {
  min-width: 124px;
  color: var(--ink);
  background: #fff;
}

.render-overlay-complete:focus-visible,
#renderOverlayRetry:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 4px;
}

@media (prefers-reduced-motion: reduce) {
  .render-overlay { transition: none; }

}

.terrain-preview-window::before {
  position: absolute;
  z-index: 0;
  inset: -10px;
  background: url("../../images/alpine-meadow-watercolor-v1.jpg") center / cover no-repeat;
  content: "";
  filter: blur(5px) saturate(0.82) brightness(0.88);
  transform: scale(1.035);
  pointer-events: none;
}

.terrain-preview-window.interaction-active {
  cursor: grab;
  box-shadow: inset 0 0 0 2px var(--acid);
}

.terrain-preview-window.is-dragging {
  cursor: grabbing;
}

.terrain-preview-window.preview-fullscreen-fallback {
  width: 100vw;
  height: 100dvh;
  max-width: none;
  border-radius: 0;
}

/* 爆炸视图只属于全屏工具栏；即使浏览器中断全屏，也不能残留在普通预览。 */
.terrain-preview-window:not(:fullscreen):not(.preview-fullscreen-fallback) #toggleExplodedView {
  display: none;
}

.terrain-preview-window.preview-fullscreen-fallback {
  position: fixed;
  z-index: 10000;
  inset: 0;
  transform: none;
  box-shadow: none;
}

.terrain-preview-window:fullscreen {
  width: 100vw;
  height: 100vh;
  border-radius: 0;
}

.terrain-preview-canvas {
  position: absolute;
  z-index: 1;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  outline: none;
}

.terrain-preview-toolbar {
  position: absolute;
  z-index: 4;
  top: 18px;
  right: auto;
  left: 18px;
  display: flex;
  overflow: hidden;
  border: var(--container-border);
  border-radius: var(--container-radius);
  background: rgb(5 5 5 / 72%);
  backdrop-filter: blur(10px);
}

.terrain-preview-switch,
.terrain-preview-actions {
  display: contents;
}

.mobile-preview-current { display: none; }
.terrain-preview-actions #resetView { display: none; }

.terrain-preview-interaction-gate {
  position: absolute;
  z-index: 3;
  inset: 0;
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.terrain-preview-window.interaction-active .terrain-preview-interaction-gate {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

.terrain-preview-toolbar button {
  min-height: 36px;
  padding: 8px 12px;
  color: var(--cream);
  border: 0;
  border-right: 1px solid rgb(252 252 251 / 24%);
  background: transparent;
  cursor: pointer;
  font-size: var(--type-t3-size);
  font-weight: var(--type-t3-weight);
  line-height: var(--type-t3-line-height);
  letter-spacing: var(--type-t3-letter-spacing);
}

.terrain-preview-toolbar button:last-child {
  border-right: 0;
}

.terrain-preview-toolbar button:focus-visible,
.terrain-preview-toolbar button.is-active,
.terrain-preview-toolbar button:active {
  color: var(--ink);
  background: var(--acid);
}

@media (hover: hover) and (pointer: fine) {
  .terrain-preview-toolbar button:hover {
    color: var(--ink);
    background: var(--acid);
  }
}

.terrain-preview-toolbar button:focus-visible {
  outline: 2px solid var(--cream);
  outline-offset: -3px;
}

@media (max-width: 743px) {
  .render-hiker-icon {
    width: 116px;
    height: 116px;
  }

  .terrain-preview-toolbar {
    top: 12px;
    right: 12px;
    left: 12px;
    justify-content: space-between;
    overflow: visible;
    border: 0;
    border-radius: 0;
    background: transparent;
    backdrop-filter: none;
    pointer-events: none;
  }

  .terrain-preview-switch,
  .terrain-preview-actions {
    display: flex;
    overflow: hidden;
    border: var(--container-border);
    border-radius: var(--container-radius);
    background: rgb(5 5 5 / 72%);
    backdrop-filter: blur(10px);
    pointer-events: auto;
  }

  .terrain-preview-toolbar button {
    min-height: 34px;
    padding: 7px 10px;
  }

  .mobile-preview-current {
    display: inline-flex;
    align-items: center;
  }

  .terrain-preview-actions [data-view="top"] { display: none; }
  .terrain-preview-actions #resetView { display: inline-flex; align-items: center; }

  body.mobile-stage-edit .terrain-preview-switch { display: none; }
  body.mobile-stage-edit .terrain-preview-actions { margin-left: auto; }

}