/**
 * iOS Safari H5：仅键盘弹起时抬底栏（不锁整页视口，避免 Live2D / 3:7 气泡布局被压没）
 * 作用域：runtime-ios-safari；--kb-vv-inset / --app-vh 由 06-composer.js 维护
 */
html.runtime-ios-safari,
body.runtime-ios-safari {
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

body.runtime-ios-safari .bottom-rail {
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

body.runtime-ios-safari .bottom-rail #tabbar {
  padding-bottom: max(env(safe-area-inset-bottom, 4px), 4px);
}

body.runtime-ios-safari:not(.keyboard-rail-active) .bottom-rail {
  position: relative !important;
  bottom: auto !important;
  left: 0 !important;
  right: 0 !important;
  width: 100% !important;
  transform: none !important;
}

body.runtime-ios-safari.keyboard-rail-active:has(.page[data-page="home"].active) .bottom-rail,
body.runtime-ios-safari.keyboard-rail-active:has(.page[data-page="create"].active) .bottom-rail,
body.runtime-ios-safari.keyboard-rail-active:has(.page[data-page="agents"].active.agents-in-chat) .bottom-rail,
body.runtime-ios-safari.keyboard-ios.keyboard-open:has(.page[data-page="home"].active) .bottom-rail,
body.runtime-ios-safari.keyboard-ios.keyboard-open:has(.page[data-page="create"].active) .bottom-rail,
body.runtime-ios-safari.keyboard-ios.keyboard-open:has(.page[data-page="agents"].active.agents-in-chat) .bottom-rail,
body.runtime-ios-safari.keyboard-rail-active.page-home .bottom-rail,
body.runtime-ios-safari.keyboard-rail-active.page-create .bottom-rail,
body.runtime-ios-safari.keyboard-rail-active.page-agents.page-chat .bottom-rail,
body.runtime-ios-safari.keyboard-ios.keyboard-open.page-home .bottom-rail,
body.runtime-ios-safari.keyboard-ios.keyboard-open.page-create .bottom-rail,
body.runtime-ios-safari.keyboard-ios.keyboard-open.page-agents.page-chat .bottom-rail,
body.runtime-ios-safari.keyboard-rail-active.page-agents.agents-chat-focus .bottom-rail,
body.runtime-ios-safari.keyboard-ios.keyboard-open.page-agents.agents-chat-focus .bottom-rail {
  position: fixed !important;
  bottom: var(--kb-vv-inset, 0px) !important;
  left: var(--vv-offset-left, 0px) !important;
  width: var(--vv-layout-width, 100%) !important;
  z-index: 60 !important;
  transform: none !important;
  padding-bottom: max(6px, env(safe-area-inset-bottom, 0px)) !important;
  box-sizing: border-box !important;
  gap: 0 !important;
  padding-top: 6px !important;
}

body.runtime-ios-safari.keyboard-rail-active.page-agents.agents-chat-focus .bottom-rail #tabbar,
body.runtime-ios-safari.keyboard-ios.keyboard-open.page-agents.agents-chat-focus .bottom-rail #tabbar,
body.runtime-ios-safari.keyboard-rail-active.page-home .bottom-rail #tabbar,
body.runtime-ios-safari.keyboard-ios.keyboard-open.page-home .bottom-rail #tabbar {
  display: none !important;
  height: 0 !important;
  min-height: 0 !important;
  max-height: 0 !important;
  overflow: hidden !important;
  margin: 0 !important;
  padding: 0 !important;
}

body.runtime-ios-safari.keyboard-ios.keyboard-open .bottom-rail .composer-input {
  scroll-margin-bottom: calc(var(--kb-vv-inset, 0px) + 12px);
}

html.keyboard-rail-animating body.runtime-ios-safari.keyboard-rail-only .bottom-rail {
  transition: bottom 0.25s cubic-bezier(0.2, 0.9, 0.2, 1) !important;
}

html.keyboard-rail-animating body.runtime-ios-safari.keyboard-rail-only .home-chat-col #homeScroll,
html.keyboard-rail-animating body.runtime-ios-safari.keyboard-rail-only #agentChatThread,
html.keyboard-rail-animating body.runtime-ios-safari.keyboard-rail-only.create-workbench-pane #createResultThread {
  transition: padding-bottom 0.25s cubic-bezier(0.2, 0.9, 0.2, 1) !important;
}

body.runtime-ios-safari.keyboard-rail-only.keyboard-open .home-chat-col #homeScroll,
body.runtime-ios-safari.keyboard-rail-only.keyboard-open .home-chat-col #chatThread {
  scroll-padding-bottom: calc(var(--kb-vv-inset, 0px) + var(--bottom-rail-height, 96px) + 16px);
  -webkit-overflow-scrolling: touch;
}

body.runtime-ios-safari.keyboard-rail-only.keyboard-open .home-chat-col #homeScroll {
  padding-bottom: calc(var(--kb-vv-inset, 0px) + var(--bottom-rail-height, 96px) + 8px) !important;
}

body.runtime-ios-safari.keyboard-rail-only.keyboard-open #agentChatThread,
body.runtime-ios-safari.keyboard-rail-only.keyboard-rail-active #agentChatThread {
  padding-bottom: calc(var(--kb-vv-inset, 0px) + var(--bottom-rail-height, 96px) + 8px) !important;
  scroll-padding-bottom: calc(var(--kb-vv-inset, 0px) + var(--bottom-rail-height, 96px) + 16px);
  -webkit-overflow-scrolling: touch;
}

body.runtime-ios-safari.keyboard-open.create-workbench-pane #createResultThread,
body.runtime-ios-safari.keyboard-rail-active.create-workbench-pane #createResultThread {
  padding-bottom: calc(16px + var(--kb-vv-inset, 0px)) !important;
}

body.runtime-ios-safari.keyboard-rail-only.keyboard-open.page-create #createModule.create-flow-scroll {
  padding-bottom: calc(12px + var(--kb-vv-inset, 0px)) !important;
}

body.runtime-ios-safari.keyboard-rail-only.keyboard-open.page-home .page[data-page="home"].active > .home-head-band {
  position: sticky !important;
  top: 0 !important;
  left: auto !important;
  width: 100% !important;
  transform: none !important;
}

body.runtime-ios-safari.keyboard-rail-only.keyboard-open.page-agents.agents-chat-focus .page[data-page="agents"].active.agents-in-chat > #agentsHeadBand {
  position: sticky !important;
  top: 0 !important;
  left: auto !important;
  width: 100% !important;
  transform: none !important;
}

/* 键盘弹起：机器人保持原位，不随整页上顶 */
body.runtime-ios-safari.keyboard-rail-only.keyboard-open.page-home .home-robot-panel,
body.runtime-ios-safari.keyboard-ios.keyboard-open.page-home .home-robot-panel,
body.runtime-ios-safari.keyboard-rail-only.keyboard-open.page-home #homeChatBg {
  transform: none !important;
}

body.runtime-ios-safari #loginOverlay.open {
  width: 100%;
  max-width: 100vw;
  left: 0;
  right: 0;
  overflow-x: hidden;
  touch-action: pan-y;
  padding-bottom: env(safe-area-inset-bottom, 0px);
}