/* ============================================================================
   COMPONENT: INTERACTIVE PLAN VIEWER
   页面只决定内容块位置；本文件负责图纸视口、控件与交互状态。
   SVG 本体渲染在 ShadowRoot 中，不受全站媒体重置规则影响。
   ============================================================================ */

.js-vector-viewer,
.v-vector-viewer {
  position: relative;
  width: 100%;
  height: var(--plan-viewer-height);
  overflow: hidden;
  background: var(--color-bg-body);
  color: var(--color-text-main);
  cursor: default;
  isolation: isolate;
  touch-action: pan-y;
}

.v-vector-viewer .v-drawing-host {
  position: absolute;
  inset: 0;
  display: block;
  overflow: hidden;
  cursor: grab;
  outline: none;
  --plan-svg-filter: none;
}

body.theme-dark .v-vector-viewer .v-drawing-host.is-invertible {
  --plan-svg-filter: invert(1);
}

.v-vector-viewer.is-dragging .v-drawing-host {
  cursor: grabbing;
}

.v-vector-viewer .v-plan-status {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  margin: 0;
  padding: var(--space-md);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-ui);
  text-align: center;
  pointer-events: none;
}

.v-vector-viewer .v-plan-status[hidden] {
  display: none;
}

.v-vector-viewer .v-plan-status.is-error {
  color: var(--color-text-main);
}

.v-vector-viewer .v-viewer-ui {
  position: absolute;
  right: var(--space-md);
  bottom: var(--space-lg);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.v-vector-viewer .v-zoom-btn {
  display: grid;
  place-items: center;
  width: var(--control-size);
  height: var(--control-size);
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-bg-surface);
  color: var(--color-text-main);
  font-family: var(--font-mono);
  font-size: var(--type-lead);
  line-height: 1;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, opacity 0.2s ease;
}

.v-vector-viewer .v-zoom-btn:hover:not(:disabled),
.v-vector-viewer .v-zoom-btn:focus-visible {
  background: var(--color-text-main);
  color: var(--color-bg-body);
}

.v-vector-viewer .v-zoom-btn:disabled {
  opacity: 0.3;
  cursor: default;
}

.v-vector-viewer .v-floor-nav {
  position: absolute;
  left: 50%;
  bottom: var(--space-md);
  z-index: 100;
  display: flex;
  flex-wrap: nowrap;
  max-width: calc(100% - 2 * var(--page-gutter));
  padding: var(--space-2xs);
  overflow-x: auto;
  overflow-y: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-bg-surface);
  transform: translateX(-50%);
  scrollbar-width: none;
  overscroll-behavior-inline: contain;
}

.v-vector-viewer .v-floor-nav::-webkit-scrollbar {
  display: none;
}

.v-vector-viewer .v-floor-btn {
  position: relative;
  flex: 0 0 auto;
  min-width: max-content;
  padding: var(--space-xs) var(--space-sm);
  border: 0;
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  line-height: 1;
  text-align: center;
  white-space: nowrap;
  word-break: keep-all;
  overflow-wrap: normal;
  hyphens: none;
  cursor: pointer;
  transition: background-color 0.25s ease, color 0.25s ease, opacity 0.25s ease;
}

.v-vector-viewer .v-floor-btn:hover,
.v-vector-viewer .v-floor-btn:focus-visible {
  color: var(--color-text-main);
}

.v-vector-viewer .v-floor-btn.is-active {
  background: var(--color-text-main);
  color: var(--color-bg-body);
}

.v-vector-viewer .v-floor-btn[data-state="loading"] {
  opacity: 0.55;
}

.v-vector-viewer .v-floor-btn.has-error:not(.is-active) {
  opacity: 0.35;
}

.v-vector-viewer .v-interaction-overlay {
  position: absolute;
  left: var(--space-md);
  bottom: var(--space-lg);
  z-index: 200;
  max-width: calc(100% - 2 * var(--page-gutter));
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-body-alpha);
  color: var(--color-text-main);
  font-family: var(--font-body);
  font-size: var(--type-ui);
  line-height: var(--leading-normal);
  text-align: center;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  backdrop-filter: blur(4px);
  transition: opacity 0.25s ease;
}

.v-vector-viewer .v-interaction-overlay.is-visible {
  opacity: 1;
}

.v-vector-viewer .v-interactive-shield {
  position: absolute;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

.v-vector-viewer .v-shield-text {
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-bg-body-alpha);
  color: var(--color-text-main);
  font-family: var(--font-heading);
  font-size: var(--type-ui);
  letter-spacing: var(--tracking-wide);
  line-height: 1;
  text-transform: uppercase;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  backdrop-filter: blur(12px);
}

@keyframes planShieldPrompt {
  0% { opacity: 0; transform: translateY(10px); }
  10%, 80% { opacity: 1; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(-10px); }
}

.v-vector-viewer .v-interactive-shield.is-prompting .v-shield-text {
  animation: planShieldPrompt 2.5s forwards;
}

.v-vector-viewer .v-exit-btn {
  position: absolute;
  left: var(--space-md);
  bottom: var(--space-md);
  z-index: 200;
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-bg-body-alpha);
  color: var(--color-text-main);
  font-family: var(--font-heading);
  font-size: var(--type-caption);
  line-height: 1;
  text-transform: uppercase;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  cursor: pointer;
  transform: translateY(8px);
  backdrop-filter: blur(8px);
  transition: background-color 0.2s ease, color 0.2s ease, opacity 0.2s ease, transform 0.2s ease;
}

.v-vector-viewer .v-exit-btn:hover,
.v-vector-viewer .v-exit-btn:focus-visible {
  background: var(--color-text-main);
  color: var(--color-bg-body);
}

.v-vector-viewer.is-interactive .v-interactive-shield {
  display: none;
}

.v-vector-viewer.is-interactive .v-exit-btn {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.v-vector-viewer[data-plan-state="loading"] .v-interactive-shield,
.v-vector-viewer[data-plan-state="error"] .v-interactive-shield {
  pointer-events: none;
}

@media (max-width: 768px) {
  .js-vector-viewer,
  .v-vector-viewer {
    height: var(--plan-viewer-height-compact);
  }

  .v-vector-viewer .v-viewer-ui {
    top: var(--space-sm);
    right: var(--space-sm);
    bottom: auto;
    gap: var(--space-2xs);
  }

  .v-vector-viewer .v-interaction-overlay {
    left: 50%;
    bottom: calc(var(--space-md) + var(--control-size));
    transform: translateX(-50%);
  }

  .v-vector-viewer .v-exit-btn {
    top: var(--space-sm);
    left: var(--space-sm);
    bottom: auto;
  }

  .v-vector-viewer .v-floor-btn {
    padding-inline: var(--space-sm);
  }
}

@media (prefers-reduced-motion: reduce) {
  .v-vector-viewer .v-interactive-shield.is-prompting .v-shield-text {
    animation: none;
    opacity: 1;
  }

  .v-vector-viewer .v-floor-btn,
  .v-vector-viewer .v-zoom-btn,
  .v-vector-viewer .v-exit-btn,
  .v-vector-viewer .v-interaction-overlay {
    transition: none !important;
  }
}