/* 首页 → 预置问题详情页 过渡（与政务演示门户配色一致） */

:root {
  --gov-tr-blue-deep: #0a3d7a;
  --gov-tr-blue: #1357a6;
  --gov-tr-blue-mid: #1a6bc4;
  --gov-tr-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --gov-tr-out-ms: 320ms;
  --gov-tr-in-ms: 420ms;
}

/* 自首页进入详情：首屏淡入 + 轻微上移 */
html.gov-nav-entering body {
  opacity: 0;
  transform: translateY(10px);
}

html.gov-nav-enter-done body {
  opacity: 1;
  transform: none;
  transition:
    opacity var(--gov-tr-in-ms) var(--gov-tr-ease),
    transform var(--gov-tr-in-ms) var(--gov-tr-ease);
}

/* 首页离开：主区域轻微收束，避免与遮罩抢戏 */
body.gov-home.gov-nav-exiting .gov-shell {
  opacity: 0.55;
  transform: scale(0.992);
  filter: saturate(0.92);
  transition:
    opacity var(--gov-tr-out-ms) cubic-bezier(0.4, 0, 0.2, 1),
    transform var(--gov-tr-out-ms) cubic-bezier(0.4, 0, 0.2, 1),
    filter var(--gov-tr-out-ms) cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

body.gov-home.gov-nav-exiting .gov-topbar {
  opacity: 0.88;
  transition: opacity var(--gov-tr-out-ms) ease;
}

#gov-page-transition {
  position: fixed;
  inset: 0;
  z-index: 200000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: linear-gradient(
    145deg,
    rgba(10, 61, 122, 0.38) 0%,
    rgba(19, 87, 166, 0.32) 50%,
    rgba(26, 107, 196, 0.28) 100%
  );
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity var(--gov-tr-out-ms) cubic-bezier(0.4, 0, 0.2, 1),
    visibility 0s linear var(--gov-tr-out-ms);
}

#gov-page-transition.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition: opacity var(--gov-tr-out-ms) cubic-bezier(0.4, 0, 0.2, 1);
}

.gov-page-transition-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  padding: 28px 36px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow:
    0 12px 40px rgba(10, 61, 122, 0.18),
    0 0 0 1px rgba(19, 87, 166, 0.08);
}

.gov-page-transition-spinner {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 3px solid rgba(19, 87, 166, 0.2);
  border-top-color: var(--gov-tr-blue);
  animation: gov-tr-spin 0.72s linear infinite;
}

.gov-page-transition-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--gov-tr-blue-deep);
  letter-spacing: 0.02em;
}

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

@media (prefers-reduced-motion: reduce) {
  html.gov-nav-enter-done body,
  html.gov-nav-entering body,
  body.gov-home.gov-nav-exiting .gov-shell,
  body.gov-home.gov-nav-exiting .gov-topbar {
    transition-duration: 0.01ms !important;
    transform: none !important;
    filter: none !important;
  }

  .gov-page-transition-spinner {
    animation: none;
    border-top-color: rgba(19, 87, 166, 0.45);
  }

  #gov-page-transition {
    transition-duration: 0.01ms !important;
  }
}