/* ═══════════════════════════════════════════════════════════
   远程编码助手 — Design System v8(ChatGPT Remote 风格)
   低噪声 / 内容优先 / 状态驱动动画 / 统一 Token
   ═══════════════════════════════════════════════════════════ */

/* ---------- Design Tokens ---------- */
:root {
  /* Color */
  --bg: #0a0d12;
  --bg-elev: #10141b;
  --surface: #141920;
  --surface-2: rgba(255, 255, 255, .045);
  --surface-3: rgba(255, 255, 255, .08);
  --glass: rgba(16, 20, 27, .78);
  --line: rgba(255, 255, 255, .075);
  --text-1: #eceff4;
  --text-2: rgba(236, 239, 244, .62);
  --text-3: rgba(236, 239, 244, .38);
  --text-4: rgba(236, 239, 244, .18);
  --accent: #3fb950;
  --accent-2: #2f81f7;
  --warn: #d29922;
  --err: #f85149;

  /* Typography */
  --fs-display: 30px;
  --fs-title: 17px;
  --fs-body: 15px;
  --fs-callout: 13px;
  --fs-caption: 12px;
  --fs-micro: 11px;

  /* Spacing (4pt grid) */
  --sp-1: 4px; --sp-2: 8px; --sp-3: 12px; --sp-4: 16px;
  --sp-5: 20px; --sp-6: 24px; --sp-8: 32px;

  /* Radius */
  --r-xs: 8px; --r-sm: 12px; --r-md: 16px; --r-lg: 22px; --r-xl: 28px; --r-pill: 999px;

  /* Motion */
  --t-quick: 110ms; --t-fast: 160ms; --t-std: 260ms; --t-spring: 380ms; --t-modal: 340ms;
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --ease-spring: cubic-bezier(.32, .72, 0, 1);

  /* Elevation */
  --elev-1: 0 1px 2px rgba(0, 0, 0, .35);
  --elev-2: 0 8px 32px rgba(0, 0, 0, .4);
  --blur: 20px;
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

html, body { height: 100%; }
body {
  background: var(--bg);
  color: var(--text-1);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: var(--fs-body);
  display: flex; flex-direction: column; overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

svg { display: block; }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }

/* ---------- 顶栏 ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px var(--sp-4) 10px;
  background: var(--glass);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border-bottom: 1px solid var(--line);
  flex-shrink: 0;
  z-index: 10;
}
.brand { display: flex; align-items: center; gap: 9px; }
.brand-mark {
  width: 28px; height: 28px; border-radius: 9px;
  background: linear-gradient(135deg, rgba(63,185,80,.25), rgba(47,129,247,.2));
  display: flex; align-items: center; justify-content: center;
}
.brand-mark svg { width: 16px; height: 16px; color: var(--accent); }
.brand-name { font-size: var(--fs-title); font-weight: 700; letter-spacing: -.01em; }
.conn-state { display: flex; align-items: center; gap: 7px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: #4a5568; }
.dot.ok { background: var(--accent); box-shadow: 0 0 8px rgba(63,185,80,.6); }
.dot.err { background: var(--err); }
.dot.connecting { background: var(--warn); animation: pulse 1s ease infinite; }
.conn-text { font-size: var(--fs-caption); color: var(--text-2); }
@keyframes pulse { 50% { opacity: .35; } }

/* ---------- 页面骨架 ---------- */
main { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.tab-page { display: none; flex: 1; min-height: 0; flex-direction: column; }
.tab-page.active { display: flex; animation: pageIn var(--t-std) var(--ease-out) both; }
@keyframes pageIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

.page-head { display: flex; align-items: baseline; justify-content: space-between; padding: var(--sp-4) var(--sp-4) var(--sp-1); flex-shrink: 0; }
.page-title { font-size: var(--fs-display); font-weight: 800; letter-spacing: -.025em; }
.page-sub { font-size: var(--fs-caption); color: var(--text-3); }

/* ---------- 底部导航 ---------- */
.tabbar {
  display: flex; flex-shrink: 0;
  background: var(--glass);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border-top: 1px solid var(--line);
  padding-bottom: env(safe-area-inset-bottom);
}
.tab-btn {
  flex: 1; display: flex; flex-direction: column; align-items: center; gap: 3px;
  background: none; border: none; color: var(--text-3);
  font-size: var(--fs-micro); padding: 8px 0 9px;
  transition: color var(--t-fast) ease, transform var(--t-quick) var(--ease-out);
}
.tab-btn svg { width: 22px; height: 22px; }
.tab-btn.active { color: var(--text-1); }
.tab-btn:active { transform: scale(.93); }

/* ---------- 按钮体系 ---------- */
.btn-primary, .btn-secondary {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  border: none; font-weight: 600; font-size: var(--fs-body);
  border-radius: var(--r-pill); padding: 11px 20px;
  transition: transform var(--t-quick) var(--ease-out), opacity var(--t-quick) ease, background var(--t-fast) ease;
}
.btn-primary { background: var(--accent); color: #0a0d12; }
.btn-primary:active { transform: scale(.975); opacity: .88; }
.btn-secondary {
  background: var(--glass); color: var(--text-1);
  border: 1px solid var(--line); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
.btn-secondary:active { transform: scale(.975); background: var(--surface-2); }
.btn-secondary svg { width: 16px; height: 16px; }
.btn-secondary.wide { width: 100%; border-radius: var(--r-md); margin-bottom: var(--sp-2); }
.btn-primary:disabled, .btn-secondary:disabled { opacity: .35; pointer-events: none; }

.icon-btn {
  width: 44px; height: 44px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  background: none; border: none; color: var(--text-2);
  border-radius: var(--r-sm);
  transition: background var(--t-quick) ease, color var(--t-fast) ease, transform var(--t-quick) var(--ease-out);
}
.icon-btn svg { width: 20px; height: 20px; }
.icon-btn:active { background: var(--surface-3); transform: scale(.93); }
.icon-btn.danger { color: var(--text-3); }
.icon-btn.danger:active { color: var(--err); background: rgba(248,81,73,.1); }

.btn-new {
  margin: var(--sp-2) var(--sp-4) calc(12px + env(safe-area-inset-bottom));
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; gap: 7px;
  background: var(--accent); color: #0a0d12; border: none;
  border-radius: var(--r-pill); padding: 13px; font-size: var(--fs-body); font-weight: 700;
  box-shadow: 0 6px 24px rgba(63,185,80,.25);
  transition: transform var(--t-quick) var(--ease-out), opacity var(--t-quick) ease;
}
.btn-new svg { width: 17px; height: 17px; }
.btn-new:active { transform: scale(.97); opacity: .9; }

/* ---------- 主页:实时项目 ---------- */
.live-projects { flex-shrink: 0; }
.live-projects-head { display: flex; align-items: center; justify-content: space-between; padding: var(--sp-1) var(--sp-4) var(--sp-1); }
.live-title { font-size: var(--fs-callout); font-weight: 700; }
.live-status { font-size: var(--fs-micro); color: var(--text-3); display: flex; align-items: center; gap: 5px; }
.live-status::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: pulse 2.2s ease infinite; }
.project-strip {
  display: flex; gap: var(--sp-2); overflow-x: auto; padding: var(--sp-1) var(--sp-4) var(--sp-2);
  -webkit-overflow-scrolling: touch; scrollbar-width: none;
}
.project-strip::-webkit-scrollbar { display: none; }
.project-tile {
  flex-shrink: 0; width: 112px;
  display: flex; flex-direction: column; align-items: flex-start; gap: 8px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-md); padding: var(--sp-3);
  color: var(--text-1); text-align: left;
  transition: transform var(--t-quick) var(--ease-out), background var(--t-fast) ease;
  animation: popIn var(--t-std) var(--ease-out) both;
}
.project-tile svg { width: 19px; height: 19px; color: var(--accent-2); }
.project-tile-name { font-size: var(--fs-callout); font-weight: 600; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.project-tile:active { transform: scale(.95); background: var(--surface-2); }
@keyframes popIn { from { opacity: 0; transform: scale(.94); } to { opacity: 1; transform: none; } }

/* ---------- 搜索 ---------- */
.search-box {
  display: flex; align-items: center; gap: 9px; flex-shrink: 0;
  margin: var(--sp-1) var(--sp-4) var(--sp-2);
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-sm); padding: 9px var(--sp-3);
}
.search-icon { width: 16px; height: 16px; color: var(--text-3); }
.search-box input { flex: 1; background: none; border: none; outline: none; color: var(--text-1); font-size: var(--fs-body); }
.search-box input::placeholder { color: var(--text-3); }

/* ---------- 会话列表 ---------- */
.session-list { flex: 1; min-height: 0; overflow-y: auto; padding: 0 var(--sp-4); -webkit-overflow-scrolling: touch; }
.session-row {
  display: block; width: 100%; text-align: left;
  background: none; border: none; color: var(--text-1);
  padding: var(--sp-4) var(--sp-1); border-bottom: 1px solid var(--line);
  animation: rowIn var(--t-std) var(--ease-out) both;
  transition: background var(--t-fast) ease;
}
.session-row:active { background: var(--surface-2); border-radius: var(--r-sm); }
.session-row-title { font-size: var(--fs-body); font-weight: 600; letter-spacing: -.01em; margin-bottom: 3px; }
.session-row-meta { font-size: var(--fs-caption); color: var(--text-3); }
@keyframes rowIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ---------- 会话详情 ---------- */
.session-topbar {
  display: flex; align-items: center; gap: 4px;
  padding: 8px var(--sp-3);
  background: var(--glass); backdrop-filter: blur(var(--blur)); -webkit-backdrop-filter: blur(var(--blur));
  border-bottom: 1px solid var(--line); flex-shrink: 0; z-index: 10;
  animation: fadeSlideIn var(--t-std) var(--ease-out) both;
}
.topbar-titles { flex: 1; min-width: 0; }
.topbar-title { font-size: var(--fs-title); font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.topbar-device { font-size: var(--fs-micro); color: var(--text-3); margin-top: 1px; }

/* 聊天流 */
.chat-scroll {
  flex: 1; min-height: 0; overflow-y: auto; padding: var(--sp-4) var(--sp-4) var(--sp-2);
  -webkit-overflow-scrolling: touch;
  -webkit-mask-image: linear-gradient(to bottom, #000 0, #000 calc(100% - 40px), transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0, #000 calc(100% - 40px), transparent 100%);
}
.chat-item { margin-bottom: var(--sp-4); }
.chat-item.user { display: flex; justify-content: flex-end; }
.chat-item.user .bubble {
  max-width: 85%;
  background: linear-gradient(135deg, rgba(47,129,247,.92), rgba(47,129,247,.72));
  border-radius: var(--r-lg) var(--r-lg) var(--r-xs) var(--r-lg);
  padding: 11px 15px 7px;
  box-shadow: var(--elev-1);
  animation: bubbleIn var(--t-std) var(--ease-out) both;
}
.bubble-text { font-size: var(--fs-body); line-height: 1.5; white-space: pre-wrap; word-break: break-word; }
.bubble-time { font-size: var(--fs-micro); color: rgba(255,255,255,.55); text-align: right; margin-top: 3px; }
@keyframes bubbleIn { from { opacity: 0; transform: translateY(8px) scale(.98); } to { opacity: 1; transform: none; } }

.chat-item.agent { display: flex; gap: 10px; align-items: flex-start; }
.agent-avatar {
  width: 30px; height: 30px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, rgba(63,185,80,.22), rgba(47,129,247,.18));
  border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
}
.agent-avatar svg { width: 15px; height: 15px; color: var(--accent); }
.agent-content {
  flex: 1; min-width: 0; max-width: 92%;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-md) var(--r-md) var(--r-xs) var(--r-md);
  padding: 11px 13px; box-shadow: var(--elev-1);
  animation: cardIn var(--t-std) var(--ease-out) both;
}
@keyframes cardIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.agent-head { display: flex; align-items: center; gap: 7px; margin-bottom: 7px; }
.agent-head-title { font-size: var(--fs-callout); font-weight: 700; color: var(--text-2); }
.agent-time { font-size: var(--fs-micro); color: var(--text-4); margin-left: auto; }
.agent-pulse { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); animation: pulse 1s ease infinite; }
.agent-body { display: flex; flex-direction: column; gap: 8px; }
.think { font-size: var(--fs-body); line-height: 1.62; white-space: pre-wrap; word-break: break-word; }

/* 工具调用 pill */
.tool-card { border: 1px solid var(--line); border-radius: var(--r-xs); background: var(--bg-elev); overflow: hidden; margin: 2px 0; }
.tool-head { padding: 7px 11px; font-size: var(--fs-caption); color: var(--text-3); display: flex; justify-content: space-between; }
.tool-body { display: none; padding: 6px 11px 9px; }
.tool-body.open { display: block; animation: fadeIn var(--t-fast) ease; }
.tool-args, .tool-result { font-size: var(--fs-micro); white-space: pre-wrap; word-break: break-all; font-family: ui-monospace, Menlo, monospace; }
.tool-args { color: var(--text-3); }
.tool-result { color: #9ecbff; margin-top: 4px; }
@keyframes fadeIn { from { opacity: 0 } to { opacity: 1 } }

/* 文件变更卡 */
.fc-card { border: 1px solid var(--line); border-radius: var(--r-sm); background: var(--bg-elev); padding: 9px 11px; }
.fc-head { font-size: var(--fs-callout); font-weight: 700; margin-bottom: 4px; display: flex; align-items: center; gap: 6px; }
.fc-add { color: var(--accent); font-family: ui-monospace, Menlo, monospace; font-size: var(--fs-caption); }
.fc-del { color: var(--err); font-family: ui-monospace, Menlo, monospace; font-size: var(--fs-caption); }
.fc-row { display: flex; align-items: center; font-size: var(--fs-caption); padding: 2px 0; }
.fc-path { flex: 1; font-family: ui-monospace, Menlo, monospace; word-break: break-all; color: var(--text-2); }

/* 完成卡 */
.done { padding: 0; }
.done-title { display: flex; align-items: center; gap: 6px; font-weight: 700; margin-bottom: 4px; }
.done-title svg { width: 15px; height: 15px; }
.done-ok .done-title { color: var(--accent); }
.done-err .done-title { color: var(--err); }
.done-stop .done-title { color: var(--warn); }
.done-text { font-size: var(--fs-body); line-height: 1.62; white-space: pre-wrap; word-break: break-word; }
.done-tokens { margin-top: 8px; padding-top: 8px; border-top: 1px solid var(--line); font-size: var(--fs-micro); color: var(--text-3); }

/* 审批卡 */
.approval-card {
  border: 1px solid rgba(210,153,34,.4); border-radius: var(--r-sm);
  background: rgba(210,153,34,.07); padding: 11px 12px;
  animation: approvalIn var(--t-spring) var(--ease-spring) both;
}
.approval-card.resolved { opacity: .55; }
@keyframes approvalIn {
  0% { opacity: 0; transform: translateY(10px) scale(.97); }
  60% { opacity: 1; transform: translateY(-1px) scale(1.004); }
  100% { transform: none; }
}
.approval-title { display: flex; align-items: center; gap: 6px; font-size: var(--fs-callout); font-weight: 700; color: var(--warn); }
.approval-title svg { width: 15px; height: 15px; }
.approval-detail { font-size: var(--fs-callout); margin-top: 5px; font-family: ui-monospace, Menlo, monospace; }
.approval-args { font-size: var(--fs-micro); color: var(--text-3); word-break: break-all; margin-top: 2px; font-family: ui-monospace, Menlo, monospace; }
.approval-btns { display: flex; gap: 8px; margin-top: 9px; }
.approval-yes { flex: 1; background: var(--accent); border: none; color: #0a0d12; border-radius: var(--r-pill); padding: 9px; font-size: var(--fs-body); font-weight: 700; transition: transform var(--t-quick) var(--ease-out), opacity var(--t-quick) ease; }
.approval-yes:active { transform: scale(.97); opacity: .9; }
.approval-no { flex: 1; background: none; border: 1px solid rgba(248,81,73,.5); color: var(--err); border-radius: var(--r-pill); padding: 9px; font-size: var(--fs-body); transition: transform var(--t-quick) var(--ease-out), background var(--t-fast) ease; }
.approval-no:active { transform: scale(.97); background: rgba(248,81,73,.08); }

/* 系统消息 */
.chat-item.system { display: flex; justify-content: center; }
.chat-item.system .sys {
  background: var(--bg-elev); color: var(--text-3); font-size: var(--fs-caption);
  padding: 7px 14px; border-radius: var(--r-pill); max-width: 95%;
  white-space: pre-wrap; word-break: break-word; text-align: center;
}
.chat-item.system .sys.err { color: var(--err); }
.chat-item.system .sys.mono {
  font-family: ui-monospace, Menlo, monospace; font-size: var(--fs-micro); color: #9ecbff; max-width: 100%; text-align: left; border-radius: var(--r-sm);
}

/* ---------- 输入组合表面 ---------- */
.composer-stack { flex-shrink: 0; }
.mode-bar { display: flex; gap: var(--sp-2); padding: var(--sp-1) var(--sp-4) var(--sp-1); }
.mode-btn {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: 6px;
  background: var(--glass); border: 1px solid var(--line); color: var(--text-3);
  border-radius: var(--r-sm); padding: 8px; font-size: var(--fs-callout);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  transition: color var(--t-fast) ease, background var(--t-fast) ease, transform var(--t-quick) var(--ease-out);
}
.mode-btn svg { width: 14px; height: 14px; }
.mode-btn.active { color: var(--accent); background: rgba(63,185,80,.08); border-color: rgba(63,185,80,.3); }
.mode-btn:active { transform: scale(.97); }

.refs { display: flex; gap: 6px; flex-wrap: wrap; padding: var(--sp-1) var(--sp-4) 0; }
.refs.hidden { display: none; }
.ref-chip {
  display: inline-flex; align-items: center; gap: 5px;
  background: rgba(47,129,247,.12); border: 1px solid rgba(47,129,247,.35); color: #9ecbff;
  border-radius: var(--r-pill); padding: 5px 12px; font-size: var(--fs-caption);
}
.ref-chip svg { width: 13px; height: 13px; }
.ref-chip:active { background: rgba(47,129,247,.22); }

.composer {
  display: flex; align-items: flex-end; gap: 2px;
  margin: var(--sp-1) var(--sp-4) calc(10px + env(safe-area-inset-bottom));
  padding: 5px 6px;
  background: var(--glass); backdrop-filter: blur(var(--blur)); -webkit-backdrop-filter: blur(var(--blur));
  border: 1px solid var(--line); border-radius: var(--r-lg);
  box-shadow: 0 4px 24px rgba(0,0,0,.42);
}
.composer .icon-btn { width: 40px; height: 40px; }
.composer textarea {
  flex: 1; resize: none; background: none; border: none; outline: none;
  color: var(--text-1); font-size: var(--fs-body); line-height: 1.45;
  padding: 8px 8px; max-height: 120px;
}
.composer textarea::placeholder { color: var(--text-3); }
.btn-send {
  width: 40px; height: 40px; flex-shrink: 0; position: relative;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent); color: #0a0d12; border: none; border-radius: var(--r-pill);
  transition: transform var(--t-quick) var(--ease-out), opacity var(--t-quick) ease;
}
.btn-send svg { width: 18px; height: 18px; }
.btn-send:active { transform: scale(.93); opacity: .9; }
.btn-send.loading svg { display: none; }
.btn-send.loading::after {
  content: ''; position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 6px; height: 6px; border-radius: 50%; background: #0a0d12;
  box-shadow: -10px 0 0 #0a0d12, 10px 0 0 #0a0d12;
  animation: sendLoading 1.2s ease infinite;
}
@keyframes sendLoading { 0%, 100% { opacity: .35; } 50% { opacity: 1; } }

/* ---------- 终端 ---------- */
.term-wrap { flex: 1; min-height: 0; padding: var(--sp-2); }
.term-tip { font-size: var(--fs-micro); color: var(--text-3); text-align: center; padding: 6px; }

/* ---------- 文件 ---------- */
.file-bar {
  display: flex; align-items: center; gap: 4px; flex-shrink: 0;
  padding: var(--sp-1) var(--sp-3);
}
.file-path { flex: 1; font-size: var(--fs-callout); color: var(--text-3); font-family: ui-monospace, Menlo, monospace; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; direction: rtl; text-align: left; }
.file-list { flex: 1; min-height: 0; overflow-y: auto; padding: var(--sp-1) var(--sp-3); -webkit-overflow-scrolling: touch; }
.file-row {
  display: flex; align-items: center; gap: 11px; width: 100%;
  background: none; border: none; color: var(--text-1);
  padding: var(--sp-3) var(--sp-2); border-bottom: 1px solid var(--line);
  border-radius: var(--r-sm); text-align: left;
  transition: background var(--t-fast) ease;
}
.file-row:active { background: var(--surface-2); }
.f-icon { width: 19px; height: 19px; flex-shrink: 0; color: var(--text-3); }
.file-row.dir .f-icon { color: var(--accent-2); }
.f-name { flex: 1; font-size: var(--fs-body); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.f-meta { font-size: var(--fs-caption); color: var(--text-3); }
.file-hint { color: var(--text-3); text-align: center; padding: 26px 0; font-size: var(--fs-callout); }
.file-path-sub { font-family: ui-monospace, Menlo, monospace; font-size: var(--fs-micro); }

/* Skeleton */
.skeleton-row { display: flex; align-items: center; gap: 12px; padding: var(--sp-3) 0; }
.skeleton-icon { width: 32px; height: 32px; border-radius: var(--r-sm); background: var(--text-4); flex-shrink: 0; }
.skeleton-line { height: 12px; border-radius: 6px; background: var(--text-4); flex: 1; animation: shimmer 1.4s ease infinite; }
.skeleton-line.short { flex: .5; }
@keyframes shimmer { 0%, 100% { opacity: .5; } 50% { opacity: 1; } }

/* ---------- 屏幕 ---------- */
.screen-ctrl { display: flex; align-items: center; gap: var(--sp-4); padding: var(--sp-2) var(--sp-4) var(--sp-3); flex-shrink: 0; }
.check { display: flex; align-items: center; gap: 7px; color: var(--text-2); font-size: var(--fs-callout); }
.check input { accent-color: var(--accent); width: 16px; height: 16px; }
.screen-img { width: 100%; display: block; padding: 0 var(--sp-4) var(--sp-4); border-radius: 4px; }

/* ---------- 设置 ---------- */
.settings-scroll { flex: 1; min-height: 0; overflow-y: auto; padding: 0 var(--sp-4) var(--sp-6); -webkit-overflow-scrolling: touch; }
.set-group { font-size: var(--fs-caption); font-weight: 700; color: var(--text-3); margin: var(--sp-4) 2px var(--sp-2); }
.set-row {
  display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3);
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-sm);
  padding: var(--sp-3) var(--sp-4); margin-bottom: var(--sp-2);
}
.set-row span { color: var(--text-3); font-size: var(--fs-callout); flex-shrink: 0; }
.set-row b { font-size: var(--fs-callout); word-break: break-all; text-align: right; font-weight: 600; }
.set-row input { flex: 1; background: var(--bg-elev); border: 1px solid var(--line); color: var(--text-1); border-radius: var(--r-xs); padding: 8px 10px; font-size: var(--fs-body); text-align: right; outline: none; }
.approval-options { display: flex; flex-direction: column; gap: var(--sp-2); margin-bottom: var(--sp-4); }
.approval-opt {
  display: flex; gap: 11px; align-items: flex-start;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-sm); padding: var(--sp-3) var(--sp-4);
}
.approval-opt input { margin-top: 3px; accent-color: var(--accent); }
.approval-opt b { display: block; font-size: var(--fs-body); }
.approval-opt span { font-size: var(--fs-caption); color: var(--text-3); }
.set-help { color: var(--text-3); font-size: var(--fs-callout); line-height: 1.7; margin-top: var(--sp-4); }
.set-help code { background: var(--surface); padding: 1px 6px; border-radius: 4px; }
.ok-text { color: var(--accent) !important; }

/* ---------- Sheet(弹窗) ---------- */
.sheet {
  position: fixed; inset: 0; z-index: 50;
  display: flex; flex-direction: column;
  background: rgba(5,7,10,.6);
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  animation: sheetBg var(--t-std) var(--ease-out) both;
  padding-top: 60px;
}
.sheet.hidden { display: none; }
@keyframes sheetBg { from { opacity: 0 } to { opacity: 1 } }
.sheet-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px var(--sp-3); background: var(--surface);
  border-top: 1px solid var(--line); border-radius: var(--r-lg) var(--r-lg) 0 0;
  font-size: var(--fs-title); font-weight: 700;
  animation: sheetUp var(--t-spring) var(--ease-spring) both;
}
.sheet-body {
  flex: 1; min-height: 0; overflow-y: auto; background: var(--bg);
  -webkit-overflow-scrolling: touch;
  animation: sheetUp var(--t-spring) var(--ease-spring) both;
}
.sheet-foot {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--sp-3) var(--sp-4) calc(var(--sp-3) + env(safe-area-inset-bottom));
  background: var(--surface); border-top: 1px solid var(--line);
  animation: sheetUp var(--t-spring) var(--ease-spring) both;
}
@keyframes sheetUp {
  from { opacity: 0; transform: translateY(30px) scale(.98); }
  to { opacity: 1; transform: none; }
}
#viewer-content { flex: 1; background: var(--bg); color: var(--text-1); border: none; outline: none; padding: var(--sp-4); font-family: ui-monospace, Menlo, monospace; font-size: var(--fs-callout); line-height: 1.55; resize: none; white-space: pre; overflow: auto; }
.sheet-foot span { font-size: var(--fs-caption); color: var(--text-3); }
.pair-body { display: flex; flex-direction: column; align-items: center; gap: var(--sp-3); padding: var(--sp-6) var(--sp-4); }
#pair-qr { width: 240px; height: 240px; border-radius: var(--r-sm); background: #fff; transition: opacity .3s; }
.pair-url { font-size: var(--fs-micro); color: var(--text-3); word-break: break-all; text-align: center; font-family: ui-monospace, Menlo, monospace; }
.pair-tip { font-size: var(--fs-caption); color: var(--text-3); text-align: center; line-height: 1.6; }
.ref-path { padding: var(--sp-3) var(--sp-4) var(--sp-1); font-size: var(--fs-caption); color: var(--text-3); font-family: ui-monospace, Menlo, monospace; }

/* ---------- Toast ---------- */
#toast {
  position: fixed; left: 50%; bottom: calc(90px + env(safe-area-inset-bottom));
  transform: translateX(-50%) translateY(10px);
  background: var(--surface); color: var(--text-1);
  border: 1px solid var(--line); box-shadow: var(--elev-2);
  padding: 10px 18px; border-radius: var(--r-pill);
  font-size: var(--fs-callout); opacity: 0; pointer-events: none;
  transition: opacity var(--t-std) var(--ease-out), transform var(--t-std) var(--ease-spring);
  z-index: 100; max-width: 85%; text-align: center;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
#toast.err { background: var(--err); color: #fff; border: none; }

/* ---------- 焦点与减少动效 ---------- */
:focus-visible { outline: 2px solid rgba(47,129,247,.6); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}