:root {
  --bg: #0b0d12; --card: rgba(255,255,255,0.06); --line: rgba(255,255,255,0.12);
  --text: #e8ecf3; --sub: #9aa3b2; --accent: #26c6da; --danger: #ef5350; --ok: #66bb6a;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text);
  font: 15px/1.5 -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif; overscroll-behavior: none; }
.hidden { display: none !important; }
.view { min-height: 100%; }
.card { max-width: 380px; margin: 12vh auto 0; padding: 24px 20px; background: var(--card);
  border: 1px solid var(--line); border-radius: 18px; }
.brand { font-size: 20px; font-weight: 700; }
.sub { color: var(--sub); margin: 4px 0 18px; }
label { display: block; margin: 10px 0; color: var(--sub); font-size: 13px; }
input { display: block; width: 100%; margin-top: 6px; padding: 11px 12px; border-radius: 12px;
  border: 1px solid var(--line); background: rgba(0,0,0,0.3); color: var(--text); font-size: 16px; outline: none; }
input:focus { border-color: var(--accent); }
button { border: 1px solid var(--line); background: rgba(255,255,255,0.08); color: var(--text);
  border-radius: 12px; padding: 10px 14px; font-size: 15px; }
button.primary { background: var(--accent); border-color: var(--accent); color: #041318; font-weight: 600; }
button.danger { color: var(--danger); }
button.ghost { background: none; border: none; color: var(--sub); }
button:disabled { opacity: 0.5; }
#lBtn { width: 100%; margin-top: 12px; }
.msg { color: var(--sub); min-height: 1.5em; font-size: 13px; }
.msg.err { color: var(--danger); }
.center { text-align: center; }
.bar { display: flex; align-items: center; gap: 10px; padding: calc(12px + env(safe-area-inset-top)) 16px 12px;
  border-bottom: 1px solid var(--line); }
.bar .title { font-weight: 700; font-size: 17px; }
.bar .who { color: var(--sub); font-size: 13px; flex: 1; }
.list { padding: 12px 16px; display: grid; gap: 10px; }
.pc { display: flex; align-items: center; gap: 12px; padding: 14px; background: var(--card);
  border: 1px solid var(--line); border-radius: 16px; }
.pc .dot { width: 9px; height: 9px; border-radius: 50%; background: #555; flex: none; }
.pc .dot.on { background: var(--ok); box-shadow: 0 0 8px var(--ok); }
.pc .info { flex: 1; min-width: 0; }
.pc .name { font-weight: 600; }
.pc .state { color: var(--sub); font-size: 12px; }
/* 远程画面 */
#vRemote { position: fixed; inset: 0; background: #000; }
#stage { position: absolute; inset: 0; touch-action: none; overflow: hidden; }
#video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; background: #000;
  transform-origin: 0 0; will-change: transform; }
#stage { -webkit-user-select: none; user-select: none; -webkit-touch-callout: none; }
/* 本地光标:手指一动立刻跟着走(电脑回来的画面有延迟,这个没有) */
#cursor { position: absolute; width: 16px; height: 16px; margin: -8px 0 0 -8px; border-radius: 50%;
  border: 2px solid #fff; box-shadow: 0 0 0 2px rgba(0,0,0,0.55), 0 0 10px rgba(38,198,218,0.9);
  pointer-events: none; display: none; }
.tag { position: absolute; top: calc(34px + env(safe-area-inset-top)); left: 50%; transform: translateX(-50%);
  background: rgba(38,198,218,0.9); color: #041318; padding: 4px 10px; border-radius: 10px; font-size: 13px; pointer-events: none; }
.hint { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); width: min(86vw, 340px);
  background: rgba(14,17,24,0.96); border: 1px solid var(--line); border-radius: 16px; padding: 16px; font-size: 14px; line-height: 1.9; }
.hint b { font-size: 16px; }
.hint button { width: 100%; margin-top: 10px; }
.tip { color: var(--sub); font-size: 12px; margin-top: 14px; }
#tapFx { position: absolute; width: 36px; height: 36px; margin: -18px 0 0 -18px; border-radius: 50%;
  border: 2px solid var(--accent); opacity: 0; pointer-events: none; transition: opacity .35s, transform .35s; }
#tapFx.show { opacity: 1; transform: scale(0.6); transition: none; }
#hud { position: absolute; top: calc(6px + env(safe-area-inset-top)); left: 8px; right: 8px; display: flex; gap: 8px;
  justify-content: space-between; font-size: 12px; color: var(--sub); pointer-events: none; }
#hud span { background: rgba(0,0,0,0.55); padding: 3px 8px; border-radius: 10px; }
.status { position: absolute; left: 50%; top: 42%; transform: translate(-50%, -50%); text-align: center;
  color: var(--text); background: rgba(0,0,0,0.6); padding: 12px 16px; border-radius: 14px; max-width: 86vw; }
.status:empty { display: none; }
/* 工具栏 = 底部标签栏(图标在上、字在下,按钮平分宽度):8 个按钮在最窄的 iPhone(375)上也一行放下 */
.tools { position: absolute; left: 0; right: 0; bottom: 0; display: flex; gap: 4px; justify-content: center;
  padding: 6px 6px calc(6px + env(safe-area-inset-bottom)); background: linear-gradient(transparent, rgba(0,0,0,0.8)); }
.tools button { flex: 1 1 0; min-width: 0; max-width: 76px; display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 6px 2px 5px; border-radius: 12px; font-size: 11px; line-height: 1.2; white-space: nowrap; }
.tools button i { font-style: normal; font-size: 18px; line-height: 1.15; }
.tools button span { max-width: 100%; overflow: hidden; text-overflow: ellipsis; }
/* 面板都贴着工具栏的真实高度往上放(JS 量出来写进 --tools-h) */
#vRemote { --tools-h: calc(52px + env(safe-area-inset-bottom)); }
.tools button.on { border-color: var(--accent); color: var(--accent); }
.kbd { position: absolute; left: 0; right: 0; bottom: var(--tools-h); padding: 8px;
  background: rgba(10,12,18,0.94); border-top: 1px solid var(--line); }
.kbd .row { display: flex; gap: 6px; margin: 4px 0; }
.kbd .row input { margin: 0; flex: 1; }
.kbd .keys { flex-wrap: wrap; }
.kbd .keys button { padding: 8px 10px; font-size: 13px; }

/* 主控面板 */
.chat { position: absolute; left: 0; right: 0; bottom: var(--tools-h); height: 62vh;
  display: flex; flex-direction: column; background: rgba(12,14,20,0.97); border-top: 1px solid var(--line);
  border-radius: 16px 16px 0 0; }
.chat.full { top: 0; bottom: var(--tools-h); height: auto; border-radius: 0; padding-top: env(safe-area-inset-top); }
.chat-head { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; border-bottom: 1px solid var(--line); }
.chat-head #chatState { font-weight: 600; font-size: 14px; }
.chat-list { flex: 1; overflow-y: auto; padding: 10px 12px; display: flex; flex-direction: column; gap: 8px; -webkit-overflow-scrolling: touch; }
.msg-b { max-width: 86%; padding: 8px 11px; border-radius: 14px; white-space: pre-wrap; word-break: break-word; font-size: 15px; line-height: 1.5; }
.msg-b.user { align-self: flex-end; background: rgba(38,198,218,0.22); }
.msg-b.master { align-self: flex-start; background: rgba(255,255,255,0.07); }
.msg-b.error { align-self: flex-start; background: rgba(239,83,80,0.18); }
.msg-b.notice { align-self: center; color: var(--sub); font-size: 12px; background: none; }
.msg-b.pending { opacity: 0.6; }
.chat-confirm { margin: 0 10px 8px; padding: 10px; border-radius: 12px; border: 1px solid rgba(255,193,7,0.6); background: rgba(255,193,7,0.12); }
.chat-confirm .row { display: flex; gap: 8px; justify-content: flex-end; margin-top: 8px; }
.chat-input { display: flex; gap: 6px; padding: 8px 10px; border-top: 1px solid var(--line); }
.chat-input input { margin: 0; flex: 1; }
#vRemote.chat-only #stage, #vRemote.chat-only #hud, #vRemote.chat-only #tKbd, #vRemote.chat-only #tMode,
#vRemote.chat-only #tScreen, #vRemote.chat-only #tQ, #vRemote.chat-only #tFit, #vRemote.chat-only #tChat,
#vRemote.chat-only #chatClose { display: none !important; }
#vRemote.chat-only { background: var(--bg); }
.pc .btns { display: flex; gap: 6px; }

/* 互传 */
.xfer { max-height: 70vh; overflow-y: auto; z-index: 3; }
.xfer .xhead { display: flex; align-items: center; justify-content: space-between; margin-bottom: 4px; }
.xfer .row { flex-wrap: wrap; }
.xfer .row button { flex: 1; padding: 9px 6px; font-size: 14px; white-space: nowrap; }
.xfer .xcap { margin: 10px 2px 4px; font-size: 13px; font-weight: 600; }
.xfer .xcap em { font-style: normal; font-weight: 400; color: var(--sub); font-size: 12px; margin-left: 4px; }
.xfer textarea { width: 100%; box-sizing: border-box; padding: 9px 11px; border-radius: 12px; border: 1px solid var(--line);
  background: rgba(0,0,0,0.3); color: var(--text); font: 15px/1.45 inherit; resize: vertical; outline: none;
  -webkit-user-select: text; user-select: text; }
.xfer textarea:focus { border-color: var(--accent); }
.xfiles { display: flex; flex-direction: column; gap: 6px; }
.xrow { display: flex; flex-direction: column; padding: 7px 10px; border-radius: 10px; background: rgba(255,255,255,0.05); font-size: 13px; }
.xrow .xn { word-break: break-all; }
.xrow .xs { color: var(--sub); font-size: 12px; }
.xrow.ok .xs { color: var(--ok); }
.xrow.err .xs { color: var(--danger); }
#vRemote.chat-only .xfer { bottom: var(--tools-h); }