/* RadarShell shared chrome. Styles apply only to rc- prefixed elements,
   body.rc-site and html[data-rc-theme] — no global reset. */

html { background: var(--rc-bg); }
body.rc-site {
  font-family: var(--rc-font);
  font-size: var(--rc-fs);
  line-height: var(--rc-lh);
  color: var(--rc-text);
  background: var(--rc-bg);
  padding-top: var(--rc-header-h);
  padding-left: var(--rc-aside-w);
}
body.rc-site table { font-variant-numeric: tabular-nums; }

/* ---------- Header ---------- */
.rc-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--rc-header-h);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  background: var(--rc-panel);
  border-bottom: 1px solid var(--rc-border);
  box-shadow: var(--rc-shadow);
  z-index: 100;
}
.rc-brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
}
.rc-brand-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--rc-text);
  text-decoration: none;
}
.rc-brand-title:hover { color: var(--rc-primary); }
.rc-brand-sub {
  font-size: 11px;
  color: var(--rc-text-dim);
  letter-spacing: 0.04em;
}
.rc-header-title {
  font-size: 14px;
  color: var(--rc-text-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.rc-header-spacer { flex: 1; }

/* Search */
.rc-search { position: relative; }
/* Mobile-only search entry + collapsible panel (hidden on desktop below) */
.rc-search-toggle {
  display: none;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  font: inherit;
  color: var(--rc-text);
  background: transparent;
  border: 1px solid var(--rc-border);
  border-radius: 6px;
  cursor: pointer;
}
.rc-search-toggle:hover { border-color: var(--rc-primary); color: var(--rc-primary); }
.rc-search-toggle:focus-visible { outline: 2px solid var(--rc-primary); outline-offset: 1px; }
.rc-search-panel { display: none; }
.rc-search input {
  width: 220px;
  height: 36px;
  padding: 0 12px;
  font: inherit;
  color: var(--rc-text);
  background: var(--rc-bg);
  border: 1px solid var(--rc-border);
  border-radius: 6px;
}
.rc-search input:focus {
  outline: 2px solid var(--rc-primary);
  outline-offset: -1px;
  border-color: var(--rc-primary);
}
.rc-sr-only {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Theme dropdown */
.rc-menu { position: relative; }
.rc-menu-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  padding: 0 12px;
  font: inherit;
  color: var(--rc-text);
  background: transparent;
  border: 1px solid var(--rc-border);
  border-radius: 6px;
  cursor: pointer;
}
.rc-menu-btn:hover { border-color: var(--rc-primary); color: var(--rc-primary); }
.rc-menu-btn:focus-visible,
.rc-link:focus-visible,
.rc-group-btn:focus-visible,
.rc-close-btn:focus-visible,
.rc-toggle-btn:focus-visible {
  outline: 2px solid var(--rc-primary);
  outline-offset: 1px;
}
.rc-menu-pop {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  min-width: 120px;
  padding: 4px;
  background: var(--rc-panel);
  border: 1px solid var(--rc-border);
  border-radius: 8px;
  box-shadow: var(--rc-shadow);
  z-index: 110;
}
.rc-menu-item {
  display: block;
  width: 100%;
  padding: 8px 12px;
  font: inherit;
  text-align: left;
  color: var(--rc-text);
  background: transparent;
  border: 0;
  border-radius: 6px;
  cursor: pointer;
}
.rc-menu-item:hover { background: var(--rc-primary-soft); }
.rc-menu-item[aria-checked="true"] {
  color: var(--rc-primary);
  font-weight: 600;
}

/* ---------- Sidebar ---------- */
.rc-aside {
  position: fixed;
  top: var(--rc-header-h);
  left: 0;
  bottom: 0;
  width: var(--rc-aside-w);
  overflow-y: auto;
  padding: 12px 8px 24px;
  background: var(--rc-panel);
  border-right: 1px solid var(--rc-border);
  z-index: 90;
}
.rc-nav-group { margin-bottom: 4px; }
.rc-group-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 44px;
  padding: 0 12px;
  font: inherit;
  font-weight: 600;
  color: var(--rc-text);
  background: transparent;
  border: 0;
  border-radius: 6px;
  cursor: pointer;
}
.rc-group-btn:hover { background: var(--rc-primary-soft); }
.rc-group-btn .rc-caret {
  display: inline-block;
  border: solid var(--rc-text-dim);
  border-width: 0 1.5px 1.5px 0;
  padding: 3px;
  transform: rotate(45deg) translateY(-2px);
  transition: transform 0.15s;
}
.rc-nav-group.rc-open .rc-caret {
  transform: rotate(-135deg) translateY(-2px);
}
.rc-sublist {
  margin: 0;
  padding: 0 0 0 8px;
  list-style: none;
}
.rc-sublist[hidden] { display: none; }
.rc-link {
  display: flex;
  align-items: center;
  min-height: 40px;
  padding: 4px 12px;
  color: var(--rc-text-dim);
  text-decoration: none;
  border-radius: 6px;
}
.rc-link:hover { color: var(--rc-primary); background: var(--rc-primary-soft); }
.rc-link[aria-current="page"] {
  color: var(--rc-primary);
  font-weight: 600;
  background: var(--rc-primary-soft);
}
.rc-aside-scrim {
  display: none;
}

/* ---------- Desktop-first: collapsible nav 768–1279px ---------- */
@media (max-width: 1279px) {
  body.rc-site { padding-left: 0; }
  .rc-aside {
    transform: translateX(-100%);
    transition: transform 0.2s ease;
  }
  .rc-aside.rc-open { transform: translateX(0); }
  .rc-toggle-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: transparent;
    border: 0;
    border-radius: 6px;
    cursor: pointer;
  }
  .rc-toggle-btn .rc-burger,
  .rc-toggle-btn .rc-burger::before,
  .rc-toggle-btn .rc-burger::after {
    content: "";
    display: block;
    width: 18px;
    height: 2px;
    background: var(--rc-text);
    border-radius: 1px;
  }
  .rc-toggle-btn .rc-burger { position: relative; }
  .rc-toggle-btn .rc-burger::before { position: absolute; top: -6px; }
  .rc-toggle-btn .rc-burger::after { position: absolute; top: 6px; }
  .rc-aside-scrim.rc-show {
    display: block;
    position: fixed;
    inset: var(--rc-header-h) 0 0 0;
    background: rgba(13, 20, 32, 0.4);
    z-index: 85;
  }
}
@media (min-width: 1280px) {
  .rc-toggle-btn { display: none; }
}

/* ---------- Mobile <768px: bottom tab bar ---------- */
@media (max-width: 767px) {
  .rc-tabs {
    display: flex;
    position: fixed;
    left: 0; right: 0; bottom: 0;
    /* iOS 安全区：底栏抬高，不遮最后一行内容 */
    height: calc(56px + env(safe-area-inset-bottom, 0px));
    padding-bottom: env(safe-area-inset-bottom, 0px);
    background: var(--rc-panel);
    border-top: 1px solid var(--rc-border);
    z-index: 95;
  }
  .rc-tab {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    font: inherit;
    font-size: 13px;
    color: var(--rc-text-dim);
    background: transparent;
    border: 0;
    text-decoration: none;
    cursor: pointer;
  }
  .rc-tab.rc-active {
    color: var(--rc-primary);
    font-weight: 600;
    box-shadow: inset 0 2px 0 var(--rc-primary);
  }
  body.rc-site { padding-left: 0; padding-bottom: calc(64px + env(safe-area-inset-bottom, 0px)); }
  /* 手机头部：汉堡 + 简短品牌 + 搜索 + 主题；内联搜索框与英文小字隐藏 */
  .rc-search { display: none; }
  .rc-search-toggle { display: inline-flex; }
  .rc-brand-sub { display: none; }
  .rc-header { gap: 8px; padding: 0 10px; }
  .rc-menu-btn { padding: 0 10px; }
  .rc-menu-btn-label { display: none; }
  .rc-menu-btn-short { display: inline; }
  /* 搜索展开面板：覆盖在内容之上，但可随时通过搜索按钮或 Escape 关闭 */
  .rc-search-panel.rc-open {
    display: block;
    position: fixed;
    top: var(--rc-header-h);
    left: 0;
    right: 0;
    padding: 12px 16px 14px;
    background: var(--rc-panel);
    border-bottom: 1px solid var(--rc-border);
    box-shadow: var(--rc-shadow);
    z-index: 99;
  }
  .rc-search-panel label {
    display: block;
    font-size: 12px;
    color: var(--rc-text-dim);
    margin-bottom: 6px;
  }
  .rc-search-panel input {
    width: 100%;
    height: 40px;
    padding: 0 12px;
    font: inherit;
    color: var(--rc-text);
    background: var(--rc-bg);
    border: 1px solid var(--rc-border);
    border-radius: 6px;
  }
  .rc-search-panel input:focus {
    outline: 2px solid var(--rc-primary);
    outline-offset: -1px;
    border-color: var(--rc-primary);
  }
  .rc-header-title { display: none; }
  .rc-close-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 8px; right: 8px;
    width: 44px; height: 44px;
    font-size: 18px;
    color: var(--rc-text);
    background: transparent;
    border: 0;
    cursor: pointer;
  }
}
@media (min-width: 768px) {
  .rc-tabs { display: none; }
  .rc-close-btn { display: none; }
  .rc-search-toggle { display: none; }
  .rc-search-panel { display: none; }
  .rc-menu-btn-short { display: none; }
  /* open all sublists by default on >=768px unless explicitly collapsed */
}

/* ---------- Content hook (opt-in via rc-content class) ---------- */
body.rc-site .rc-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 20px 24px 40px;
}
/* 手机：12px 节奏；底栏 safe-area 不遮内容；紧凑品牌 */
@media (max-width: 767px) {
  body.rc-site .rc-content { padding: 12px 12px 20px; }
  .rc-brand-title { font-size: 16px; }
  .rc-search-toggle,
  .rc-menu-btn { min-height: 44px; }
}
/* 768–1279：侧栏折叠后标题易与搜索挤压，窄到 1024 以下隐藏页题 */
@media (max-width: 1023px) {
  .rc-header-title { display: none; }
}
/* 1024–1279：容器与折叠侧栏并存，收窄留白避免互相挤压 */
@media (min-width: 768px) and (max-width: 1279px) {
  body.rc-site .rc-content { padding: 16px 20px 32px; }
}