/* 首页悬浮二维码：固定右下角展示，并在用户触发后把同一窗体放大到中央。 */
.home-qr-widget {
  position: fixed;
  z-index: 30;
  right: calc(16px + env(safe-area-inset-right));
  bottom: calc(16px + env(safe-area-inset-bottom));
  width: 186px;
  pointer-events: auto;
}

.home-qr-stage {
  position: relative;
  width: 100%;
}

.home-qr-trigger {
  position: absolute;
  z-index: 4;
  inset: 0;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: zoom-in;
}

.home-qr-stage:has(.home-qr-trigger:hover) .home-qr-card {
  box-shadow: 8px 8px 0 rgb(16 17 18 / 19%);
}

.home-qr-trigger:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.home-qr-card {
  position: relative;
  padding: 11px;
  border: 1px solid var(--ink);
  background: rgb(255 253 248 / 96%);
  box-shadow: 6px 6px 0 rgb(16 17 18 / 14%);
}

.home-qr-expand-mark {
  position: absolute;
  top: 7px;
  right: 7px;
  width: 9px;
  height: 9px;
  border-top: 1px solid var(--accent);
  border-right: 1px solid var(--accent);
}

.home-qr-card::before,
.home-qr-card::after {
  position: absolute;
  width: 14px;
  height: 2px;
  background: var(--accent);
  content: "";
}

.home-qr-card::before {
  top: -1px;
  left: 11px;
}

.home-qr-card::after {
  right: 11px;
  bottom: -1px;
}

.home-qr-meta {
  display: grid;
  gap: 5px;
  margin-bottom: 9px;
  color: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 0.55rem;
  font-weight: 720;
  letter-spacing: 0.055em;
  line-height: 1.3;
}

.home-qr-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-text);
}

.home-qr-status i {
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--accent);
}

.home-qr-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: var(--paper-raised);
}

.home-qr-image,
.home-qr-placeholder {
  width: 100%;
  height: 100%;
}

.home-qr-image {
  display: block;
  padding: 6px;
  box-sizing: border-box;
  background: #fff;
  object-fit: contain;
}

.home-qr-placeholder {
  position: relative;
  display: grid;
  place-items: center;
  background-image:
    linear-gradient(90deg, rgb(16 17 18 / 4%) 1px, transparent 1px),
    linear-gradient(rgb(16 17 18 / 4%) 1px, transparent 1px);
  background-size: 12px 12px;
}

.home-qr-finder {
  position: absolute;
  width: 31px;
  height: 31px;
  border: 4px solid var(--ink);
}

.home-qr-finder::after {
  position: absolute;
  inset: 5px;
  background: var(--ink);
  content: "";
}

.home-qr-finder-top-left {
  top: 10px;
  left: 10px;
}

.home-qr-finder-top-right {
  top: 10px;
  right: 10px;
}

.home-qr-finder-bottom-left {
  bottom: 10px;
  left: 10px;
}

.home-qr-waiting {
  display: grid;
  justify-items: center;
  padding: 5px 7px;
  border: 1px solid var(--line);
  background: var(--paper-raised);
  color: var(--ink);
  font-family: var(--font-mono);
  line-height: 1;
}

.home-qr-waiting strong {
  font-size: 1.15rem;
  letter-spacing: 0.08em;
}

.home-qr-waiting small {
  margin-top: 4px;
  color: var(--ink-muted);
  font-size: 0.47rem;
  letter-spacing: 0.08em;
}

.home-qr-scanline {
  position: absolute;
  z-index: 2;
  right: 7px;
  left: 7px;
  height: 2px;
  background: var(--accent);
  box-shadow: 0 0 8px rgb(255 74 45 / 38%);
  opacity: 0;
  animation: home-qr-scan 5.4s ease-in-out infinite;
}

/* 已发布图片保持完全无遮挡，动态只用于提示尚未上传的空状态。 */
.home-qr-widget[data-home-qr-state="ready"] .home-qr-scanline {
  display: none;
}

.home-qr-title,
.home-qr-note {
  display: block;
}

.home-qr-title {
  margin-top: 9px;
  color: var(--ink);
  font-size: 0.83rem;
  line-height: 1.25;
}

.home-qr-note {
  margin-top: 3px;
  color: var(--ink-muted);
  font-size: 0.64rem;
  line-height: 1.4;
}

body.home-qr-expanded {
  overflow: hidden;
}

.home-qr-widget[data-home-qr-expanded="true"] {
  z-index: 120;
  inset: 0;
  display: grid;
  width: auto;
  max-height: 100dvh;
  padding:
    calc(16px + env(safe-area-inset-top))
    calc(16px + env(safe-area-inset-right))
    calc(16px + env(safe-area-inset-bottom))
    calc(16px + env(safe-area-inset-left));
  box-sizing: border-box;
  place-items: center;
  background: rgb(16 17 18 / 58%);
}

.home-qr-widget[data-home-qr-expanded="true"] .home-qr-stage {
  width: min(420px, 100%, calc(100dvh - 150px));
  animation: home-qr-expand 180ms ease-out both;
}

.home-qr-widget[data-home-qr-expanded="true"] .home-qr-card {
  max-height: calc(100dvh - 32px - env(safe-area-inset-top) - env(safe-area-inset-bottom));
  padding: 16px;
  overflow-y: auto;
  background: var(--paper-raised);
  box-shadow: 12px 12px 0 rgb(16 17 18 / 24%);
  cursor: zoom-out;
}

.home-qr-widget[data-home-qr-expanded="true"] .home-qr-trigger {
  pointer-events: none;
}

.home-qr-widget[data-home-qr-expanded="true"] .home-qr-expand-mark {
  opacity: 0;
}

.home-qr-widget[data-home-qr-expanded="true"] .home-qr-meta > span:first-child,
.home-qr-widget[data-home-qr-expanded="true"] .home-qr-note {
  display: block;
}

.home-qr-widget[data-home-qr-expanded="true"] .home-qr-meta {
  font-size: 0.68rem;
}

.home-qr-widget[data-home-qr-expanded="true"] .home-qr-finder {
  width: 54px;
  height: 54px;
  border-width: 6px;
}

.home-qr-widget[data-home-qr-expanded="true"] .home-qr-finder::after {
  inset: 8px;
}

.home-qr-widget[data-home-qr-expanded="true"] .home-qr-finder-top-left {
  top: 18px;
  left: 18px;
}

.home-qr-widget[data-home-qr-expanded="true"] .home-qr-finder-top-right {
  top: 18px;
  right: 18px;
}

.home-qr-widget[data-home-qr-expanded="true"] .home-qr-finder-bottom-left {
  bottom: 18px;
  left: 18px;
}

.home-qr-widget[data-home-qr-expanded="true"] .home-qr-waiting strong {
  font-size: 1.7rem;
}

.home-qr-widget[data-home-qr-expanded="true"] .home-qr-title {
  font-size: 1.08rem;
}

.home-qr-widget[data-home-qr-expanded="true"] .home-qr-note {
  font-size: 0.76rem;
}

.home-qr-close {
  position: fixed;
  z-index: 2;
  top: calc(16px + env(safe-area-inset-top));
  right: calc(16px + env(safe-area-inset-right));
  display: grid;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--paper-raised);
  background: var(--ink);
  color: var(--paper-raised);
  cursor: pointer;
  font: inherit;
  font-size: 1.55rem;
  line-height: 1;
  place-items: center;
}

.home-qr-close:hover,
.home-qr-close:focus-visible {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--ink);
  outline: 0;
}

.home-qr-close[hidden] {
  display: none;
}

@keyframes home-qr-scan {
  0% {
    top: 9px;
    opacity: 0;
  }

  12% {
    top: 9px;
    opacity: 0.82;
  }

  62% {
    top: calc(100% - 11px);
    opacity: 0.82;
  }

  72%,
  100% {
    top: calc(100% - 11px);
    opacity: 0;
  }
}

@keyframes home-qr-expand {
  from {
    opacity: 0;
    transform: scale(0.86);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

@media (min-width: 721px) {
  .home-qr-widget + .site-footer .footer-inner {
    padding-right: 210px;
  }
}

@media (max-width: 720px) {
  .home-qr-widget {
    right: calc(10px + env(safe-area-inset-right));
    bottom: calc(10px + env(safe-area-inset-bottom));
    width: 120px;
  }

  .home-qr-card {
    padding: 8px;
    box-shadow: 4px 4px 0 rgb(16 17 18 / 14%);
  }

  .home-qr-meta > span:first-child,
  .home-qr-note {
    display: none;
  }

  .home-qr-meta {
    margin-bottom: 6px;
    font-size: 0.49rem;
  }

  .home-qr-finder {
    width: 23px;
    height: 23px;
    border-width: 3px;
  }

  .home-qr-finder::after {
    inset: 4px;
  }

  .home-qr-title {
    margin-top: 7px;
    font-size: 0.72rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .home-qr-scanline,
  .home-qr-widget[data-home-qr-expanded="true"] .home-qr-stage {
    animation: none;
  }

  .home-qr-scanline {
    top: 50%;
  }
}

@media print {
  .home-qr-widget,
  .home-qr-widget[data-home-qr-expanded="true"] {
    display: none;
  }
}