/* The live browser frame (素 Plain §4.1 phone-browser / -takeover): nav bar with
   the site name, the page with a dark caption overlay, a compact pending row,
   a bottom toolbar (接手; or 鍵盤, 捲動, 交還 while you drive). */

.browser-wrap .sheet-body {
  padding: 0;
}

.browser-view {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-height: 0;
}

.bv-main {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: var(--s-2) var(--s-4) var(--s-4);
}

/* Several Spaces: plain text tabs, the open one in the label colour. */
.bv-spaces {
  display: flex;
  gap: var(--s-4);
  margin: 0 0 var(--s-3);
  overflow-x: auto;
  scrollbar-width: none;
}

.bv-spaces[hidden] {
  display: none;
}

.bv-space {
  flex: none;
  min-height: 36px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--label-2);
  font-size: var(--t-subhead);
}

.bv-space[aria-selected="true"] {
  color: var(--label);
  font-weight: 600;
}

/* ── The page ─────────────────────────────────────────────── */
.bv-stage {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.bv-scroll {
  max-width: 100%;
  /* The visible height (keyboard, landscape), not the layout viewport's. */
  max-height: calc(var(--vvh, 100dvh) * 0.56);
  overflow: auto;
  overscroll-behavior: contain;
  border-radius: var(--r-lg);
  scrollbar-width: none;
}

.bv-scroll::-webkit-scrollbar {
  display: none;
}

.bv-scroll[data-zoom="true"] .bv-frame {
  width: 200%;
}

.bv-frame {
  position: relative;
  margin: 0 auto;
  aspect-ratio: 16 / 10;
  /* D4: held sideways, the whole frame fits the visible height instead of being cut. */
  width: min(100%, calc(var(--vvh, 100dvh) * 0.56 * 16 / 10));
  overflow: hidden;
  border-radius: var(--r-lg);
  background: var(--fill);
  box-shadow: inset 0 0 0 0.5px var(--separator);
  touch-action: manipulation;
}

/* You drive: a 2px accent ring says taps go to the page. */
.bv-frame[data-driving="true"] {
  box-shadow: 0 0 0 2px var(--accent);
}

.bv-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  -webkit-user-select: none;
  user-select: none;
  pointer-events: none;
}

.bv-wait {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  margin: 0;
  color: var(--label-2);
  font-size: var(--t-footnote);
}

.bv-wait[hidden] {
  display: none;
}

/* Who is driving: a small caption on the page, fixed dark in both themes (§2.3). */
.bv-overlay {
  position: absolute;
  left: var(--s-2);
  bottom: var(--s-2);
  display: inline-flex;
  align-items: center;
  max-width: calc(100% - var(--s-4));
  margin: 0;
  padding: 4px var(--s-2);
  border-radius: var(--r-sm);
  background: rgb(0 0 0 / 0.72);
  color: #ffffff;
  font-size: var(--t-caption);
  font-weight: 500;
  line-height: 1.35;
  pointer-events: none;
}

.bv-overlay[hidden] {
  display: none;
}

.bv-ripple {
  position: absolute;
  width: 36px;
  height: 36px;
  margin: -18px 0 0 -18px;
  border: 2px solid #ffffff;
  border-radius: 50%;
  background: rgb(0 0 0 / 0.25);
  opacity: 0;
  pointer-events: none;
}

.bv-ripple[data-on="true"] {
  animation: ripple 420ms var(--e-standard);
}

@keyframes ripple {
  from {
    opacity: 0.9;
    transform: scale(0.4);
  }
  to {
    opacity: 0;
    transform: scale(1.3);
  }
}

/* Last step on the left, 放大 on the right. */
.bv-tools {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-3);
  min-height: var(--touch);
  padding: 0 0 0 var(--s-4);
}

.bv-caption {
  flex: 1;
  min-width: 0;
  margin: 0;
  color: var(--label-2);
  font-size: var(--t-footnote);
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.bv-caption[data-gated="true"] {
  color: var(--waiting);
}

.bv-zoom {
  flex: none;
  font-size: var(--t-subhead);
}

.bv-pending {
  margin: var(--s-4) 0 0;
}

.bv-wait-row .row-sub {
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

/* While the person drives, the page gets the room. */
.browser-view[data-driving="true"] .bv-info,
.browser-view[data-driving="true"] .bv-note {
  display: none;
}

.bv-note {
  margin: var(--s-3) 0 0;
}

.bv-note:empty {
  display: none;
}

/* ── Bottom toolbar ───────────────────────────────────────── */
.bv-bar {
  flex: none;
  padding: 0 var(--s-2) max(var(--safe-bottom), var(--s-2));
  background: var(--bar);
  box-shadow: inset 0 0.5px 0 var(--separator);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
}

:root[data-keyboard="open"] .bv-bar {
  padding-bottom: var(--s-2);
}

.bv-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-1);
  min-height: 49px;
}

.bv-controls:empty {
  display: none;
}

.bv-controls .takeover {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}

.bv-tool[aria-pressed="true"] {
  color: var(--accent);
  background: var(--fill);
}

.bv-spacer {
  flex: 1;
}

.bv-handback {
  min-height: 36px;
  padding: 0 var(--s-4);
  border-radius: var(--r-md);
  font-size: var(--t-subhead);
}

/* The text field over the native keyboard, a quiet capsule like the composer. */
.bv-typing {
  padding: var(--s-2) var(--s-2) 0;
}

.bv-typing[hidden] {
  display: none;
}

.bv-input {
  width: 100%;
  min-height: 36px;
  padding: 0 var(--s-4);
  border: 0;
  border-radius: var(--r-full);
  outline: 0;
  background: var(--fill);
  color: var(--label);
  font-size: var(--t-field);
}

.bv-input::placeholder {
  color: var(--placeholder);
}

/* 分頁 sheet. */
.bv-tabs {
  padding-top: var(--s-2);
}

.bv-check {
  color: var(--accent);
}

/* Short landscape: page left, the pending row and notes right. */
@media (orientation: landscape) and (max-height: 500px) {
  .bv-main {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    grid-auto-rows: min-content;
    column-gap: var(--s-6);
    padding-right: calc(var(--s-4) + var(--safe-right));
    padding-left: calc(var(--s-4) + var(--safe-left));
  }
  .bv-main > .bv-stage {
    grid-row: 1 / span 4;
  }
  .bv-main > :not(.bv-stage) {
    grid-column: 2;
  }
  .bv-pending {
    margin-top: 0;
  }
  .bv-note {
    margin-top: var(--s-2);
    text-align: left;
  }
}