/* 页面悬浮界面收纳：方向与各部件所在的屏幕边缘保持一致。 */
#nav {
  --site-nav-transition:
    transform .45s cubic-bezier(.4, 0, .2, 1),
    translate .45s cubic-bezier(.4, 0, .2, 1),
    opacity .35s ease-in-out,
    visibility 0s .45s;
  transition: var(--site-nav-transition) !important;
}

#live2d-frame,
#fps,
#rightside > #rightside-config-show,
#rightside > #rightside-home-controls {
  transition: translate .45s cubic-bezier(.4, 0, .2, 1), opacity .3s ease;
}

/* 首页中间的主标题与打字文字随收纳按钮原地渐隐、渐显，不产生位移。 */
#page-header.full_page #site-title,
#page-header.full_page #site-subtitle {
  transition: opacity .55s ease-in-out, filter .55s ease-in-out, text-shadow 1s linear !important;
}

#rightside > #rightside-config-hide {
  transition: transform .4s, translate .45s cubic-bezier(.4, 0, .2, 1), opacity .3s ease;
}

#site-ui-toggle {
  padding: 0;
  border: 0;
  cursor: pointer;
}

#site-ui-toggle:focus-visible {
  outline: 2px solid var(--btn-color);
  outline-offset: 2px;
}

html.site-ui-collapsed #page-header #nav {
  /* 展开与收起都保持同一定位，避免退出时瞬间跳回已滚出屏幕的头图。 */
  position: fixed !important;
  top: 0 !important;
  display: flex !important;
  transform: translate3d(0, 0, 0) !important;
  translate: 0 calc(-100% - 20px);
  opacity: 0 !important;
  visibility: visible !important;
  pointer-events: none !important;
  animation: none !important;
  background: linear-gradient(60deg, #ffd7e4, #c8f1ff) !important;
}
/* 滚动导航的准备/回顶状态也使用与收纳按钮相同的 transition。 */
html.site-ui-collapsed #page-header #nav,
html.site-ui-collapsed #page-header.nav-fixed.nav-preparing > #nav,
html.site-ui-collapsed #page-header.nav-fixed.nav-returning > #nav,
html.site-ui-collapsed #page-header.nav-top-returning > #nav {
  transition: var(--site-nav-transition) !important;
}

/* 顶部触发区独立于导航，导航完全收起后依然可用。 */
html.site-ui-collapsed #page-header {
  /* 头图的模糊入场滤镜会让 fixed 导航随头图滚走。 */
  filter: none !important;
}
#site-nav-reveal {
  display: none;
}
html.site-ui-collapsed #site-nav-reveal:not([hidden]) {
  display: block;
  position: fixed;
  inset: 0 0 auto;
  height: var(--site-nav-height, 60px);
  padding: 0;
  border: 0;
  background: transparent;
  z-index: 99;
  cursor: pointer;
}
#site-nav-reveal:focus-visible {
  outline: 2px solid var(--theme-color, #39c5bb);
  outline-offset: -2px;
}
html.site-ui-collapsed.site-nav-peek #page-header #nav {
  translate: 0 0;
  opacity: 1 !important;
  pointer-events: auto !important;
  transition-delay: 0s !important;
}
[data-theme='dark'].site-ui-collapsed #page-header #nav {
  background: linear-gradient(60deg, #1e2834, #1a3a40) !important;
}
html.site-ui-collapsed #page-header #nav a,
html.site-ui-collapsed #page-header #nav #site-name,
html.site-ui-collapsed #page-header #nav #toggle-menu {
  color: var(--font-color, #1f1f1f) !important;
  text-shadow: none !important;
}
/* 展开时让出菜单的点击区域。 */
html.site-nav-peek #site-nav-reveal:not(:focus-visible) {
  pointer-events: none;
}
@media (hover: none), (pointer: coarse) {
  html.site-ui-collapsed #site-nav-reveal:not([hidden]) {
    inset: 0 auto auto 50%;
    translate: -50% 0;
    width: 76px;
    height: 32px;
  }
  #site-nav-reveal::after {
    content: '';
    display: block;
    width: 36px;
    height: 4px;
    margin: 8px auto 0;
    border-radius: 4px;
    background: var(--theme-color, #39c5bb);
    box-shadow: 0 1px 4px #0003;
  }
  html.site-nav-peek #site-nav-reveal {
    visibility: hidden;
  }
}

html.site-ui-collapsed #page-header.full_page #site-title,
html.site-ui-collapsed #page-header.full_page #site-subtitle {
  opacity: 0 !important;
  filter: brightness(1.45) blur(2px);
  pointer-events: none !important;
}

html.site-ui-collapsed #fps,
html.site-ui-collapsed #live2d-frame:not([data-live2d-position="right"]) {
  translate: calc(-100% - 24px) 0;
  opacity: 0 !important;
  pointer-events: none !important;
}

html.site-ui-collapsed #live2d-frame[data-live2d-position="right"] {
  translate: calc(100% + 24px) 0;
  opacity: 0 !important;
  pointer-events: none !important;
}

html.site-ui-collapsed #rightside > #rightside-config-hide,
html.site-ui-collapsed #rightside > #rightside-config-show,
html.site-ui-collapsed #rightside > #rightside-home-controls {
  translate: calc(100% + 24px) 0;
  opacity: 0 !important;
  pointer-events: none !important;
}

@media (prefers-reduced-motion: reduce) {
  #nav {
    --site-nav-transition: none;
  }
  #nav,
  #page-header.full_page #site-title,
  #page-header.full_page #site-subtitle,
  #live2d-frame,
  #fps,
  #rightside > #rightside-config-hide,
  #rightside > #rightside-config-show,
  #rightside > #rightside-home-controls {
    transition: none !important;
  }
}