/* ============================================================
   任亮 AI —— 对话优先(GPT 类)界面
   全部样式仅作用于 .chat-app 及其后代, 不影响其它表面。
   设计语言: 浅灰侧栏 / 白色主区 / 近黑主按钮 / 绿色仅用于语音状态
   ============================================================ */

.chat-app {
  --ch-sidebar: #f4f4f5;
  --ch-main:    #ffffff;
  --ch-border:  #e6e6e8;
  --ch-fg:      #1a1c1f;
  --ch-fg2:     #61646b;
  --ch-fg3:     #9a9da6;
  --ch-ink:     #1a1c1f;
  --ch-ink-hover:#000000;
  --ch-ink-fg:  #ffffff;
  --ch-hover:   rgba(0, 0, 0, .05);
  --ch-active:  rgba(0, 0, 0, .08);
  --ch-voice:   #16a34a;
  --ch-voice-tint: rgba(22, 163, 74, .14);
  --ch-radius: 24px;
}

[data-theme="dark"] .chat-app {
  --ch-sidebar: #1b1c1e;
  --ch-main:    #121315;
  --ch-border:  #2a2b2e;
  --ch-fg:      #f2f3f5;
  --ch-fg2:     #9aa0a8;
  --ch-fg3:     #666a72;
  --ch-ink:     #ffffff;
  --ch-ink-hover:#e4e4e4;
  --ch-ink-fg:  #14151a;
  --ch-hover:   rgba(255, 255, 255, .06);
  --ch-active:  rgba(255, 255, 255, .10);
}

/* ---------- 根布局 ---------- */
.chat-app { display: flex; height: 100vh; overflow: hidden; background: var(--ch-main); }
.chat-app .chat-main {
  flex: 1; min-width: 0; display: flex; flex-direction: column;
  background: var(--ch-main); color: var(--ch-fg);
}

/* ---------- 侧栏(浅灰, 抽屉) ---------- */
.chat-app .chat-side {
  width: 272px; flex: none; display: flex; flex-direction: column;
  background: var(--ch-sidebar);
  border-right: 1px solid var(--ch-border);
  padding: 14px 12px 12px; gap: 8px; overflow-y: auto;
}
.chat-app .ch-side-head {
  display: flex; align-items: center; gap: 8px; padding: 2px 6px 6px;
}
.chat-app .ch-brand {
  font-size: 18px; font-weight: 700; letter-spacing: -.01em; color: var(--ch-fg);
  display: flex; align-items: center; gap: 8px;
}
.chat-app .ch-brand .ch-mark {
  width: 26px; height: 26px; border-radius: 50%; background: var(--ch-ink); color: var(--ch-ink-fg);
  display: inline-flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700;
}
.chat-app .ch-brand .ch-sub { font-size: 10.5px; letter-spacing: .1em; color: var(--ch-fg3);
  text-transform: uppercase; font-weight: 600; display: block; line-height: 1.2; }
.chat-app .ch-side-close {
  margin-left: auto; border: none; background: none; color: var(--ch-fg3);
  width: 30px; height: 30px; border-radius: 8px; font-size: 20px; line-height: 1;
  display: none; align-items: center; justify-content: center;
}
.chat-app .ch-side-close:hover { background: var(--ch-hover); color: var(--ch-fg); }

/* 新对话按钮: 近黑主按钮 */
.chat-app .ch-newbtn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  width: 100%; height: 38px; border: none; border-radius: 12px;
  background: var(--ch-ink); color: var(--ch-ink-fg);
  font-size: 14px; font-weight: 600; cursor: pointer;
  transition: background .15s;
}
.chat-app .ch-newbtn:hover { background: var(--ch-ink-hover); }

.chat-app .ch-search {
  width: 100%; border: 1px solid var(--ch-border); border-radius: 10px;
  background: var(--ch-main); color: var(--ch-fg);
  padding: 8px 12px; font-size: 13.5px; outline: none;
}
.chat-app .ch-search::placeholder { color: var(--ch-fg3); }
.chat-app .ch-search:focus { border-color: var(--ch-ink); }

.chat-app .ch-list { display: flex; flex-direction: column; gap: 2px; margin-top: 4px; }
.chat-app .chat-inner-empty { padding: 20px; text-align: center; color: var(--ch-fg3); font-size: 13px; }

/* 会话项 */
.chat-app .conv-item {
  display: flex; align-items: center; gap: 8px; width: 100%;
  padding: 9px 10px; border-radius: 10px; border: none; background: none;
  text-align: left; color: var(--ch-fg2); font-size: 13.5px; cursor: pointer;
}
.chat-app .conv-item:hover { background: var(--ch-hover); color: var(--ch-fg); }
.chat-app .conv-item.on { background: var(--ch-active); color: var(--ch-fg); }
.chat-app .conv-item .c-title { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chat-app .conv-item .c-del { opacity: 0; }
.chat-app .conv-item:hover .c-del { opacity: 1; }

.chat-app .side-label { font-size: 11.5px; letter-spacing: .06em; color: var(--ch-fg3);
  padding: 10px 10px 4px; text-transform: uppercase; font-weight: 600; }
.chat-app .side-foot { margin-top: auto; padding-top: 8px; }

/* 侧栏底部工具行 */
.chat-app .ch-side-foot-row { display: flex; align-items: center; gap: 6px; padding: 0 4px; }

/* ---------- 顶栏 ---------- */
.chat-app .ch-head {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 22px; border-bottom: 1px solid var(--ch-border); flex-wrap: wrap;
}
.chat-app .ch-menu {
  display: none; border: none; background: none; color: var(--ch-fg2);
  width: 32px; height: 32px; border-radius: 8px; font-size: 18px; line-height: 1;
}
.chat-app .ch-menu:hover { background: var(--ch-hover); color: var(--ch-fg); }
.chat-app .ch-head .ch-title { font-size: 15px; font-weight: 600; color: var(--ch-fg); }

/* 模型选择(简洁) */
.chat-app .ch-model-select {
  border: 1px solid var(--ch-border); border-radius: 10px; background: var(--ch-main);
  color: var(--ch-fg); padding: 6px 10px; font-size: 13.5px; font-weight: 500;
  outline: none; appearance: none; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239a9da6' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 10px center; padding-right: 28px;
}
.chat-app .ch-model-select:focus { border-color: var(--ch-ink); box-shadow: 0 0 0 3px var(--ch-hover); }

/* 顶部动作 chip */
.chat-app .ch-chip {
  display: inline-flex; align-items: center; gap: 6px;
  height: 32px; padding: 0 12px; border: 1px solid var(--ch-border); border-radius: 100px;
  background: var(--ch-main); color: var(--ch-fg2); font-size: 13px; font-weight: 500;
  cursor: pointer; transition: all .15s; user-select: none; white-space: nowrap;
}
.chat-app .ch-chip:hover { border-color: var(--ch-fg3); color: var(--ch-fg); }
.chat-app .ch-chip.on { background: var(--ch-ink); border-color: var(--ch-ink); color: var(--ch-ink-fg); }

/* 联网搜索状态徽标(网关返回 searching 事件后显示) */
.chat-app .ws-badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12.5px; color: var(--ch-fg2);
  border: 1px solid var(--ch-border); border-radius: 100px; padding: 3px 12px;
  animation: ch-ws-pulse 1.2s ease-in-out infinite;
}
@keyframes ch-ws-pulse { 0%,100% { opacity: 1; } 50% { opacity: .55; } }

/* 高级设置折叠 */
.chat-app .ch-adv-toggle { border: none; background: none; color: var(--ch-fg3);
  font-size: 13px; display: inline-flex; align-items: center; gap: 4px; padding: 4px 6px;
  border-radius: 8px; }
.chat-app .ch-adv-toggle:hover { background: var(--ch-hover); color: var(--ch-fg); }
.chat-app .ch-adv {
  padding: 0 22px; max-height: 0; overflow: hidden; opacity: 0;
  transition: max-height .2s ease, opacity .2s ease;
  border-bottom: 1px solid transparent; display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
}
.chat-app .ch-adv.open { max-height: 80px; opacity: 1; padding: 10px 22px; border-bottom-color: var(--ch-border); }
.chat-app .ch-adv .ch-adv-label { font-size: 12.5px; color: var(--ch-fg3); }

/* ---------- 中央阅读区(约 800px) ---------- */
.chat-app .chat-scroll { flex: 1; overflow-y: auto; scroll-behavior: smooth; }
.chat-app .chat-log { max-width: 800px; margin: 0 auto; padding: 26px 24px 12px; width: 100%; }

.chat-app .chat-empty {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: var(--ch-fg3); gap: 12px; text-align: center; padding: 40px 20px;
}
.chat-app .chat-empty h2 { color: var(--ch-fg); font-size: 30px; font-weight: 600; margin: 0; letter-spacing: -.01em; }
.chat-app .chat-empty p { font-size: 14px; max-width: 420px; line-height: 1.7; }

/* 消息 */
.chat-app .msg-row { display: flex; gap: 14px; padding: 18px 0; }
.chat-app .msg-row + .msg-row { border-top: 1px solid var(--ch-border); }
.chat-app .msg-avatar { width: 32px; height: 32px; border-radius: 50%; flex: none;
  display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 700; margin-top: 2px; }
.chat-app .msg-avatar.user { background: var(--ch-border); color: var(--ch-fg); }
.chat-app .msg-avatar.ai { background: var(--ch-ink); color: var(--ch-ink-fg); }
.chat-app .msg-body { flex: 1; min-width: 0; }
.chat-app .msg-name { font-size: 13px; font-weight: 600; color: var(--ch-fg2); margin-bottom: 6px; }
.chat-app .msg-name b { color: var(--ch-fg); }
.chat-app .msg-text { white-space: pre-wrap; }
.chat-app .md { font-size: 15px; line-height: 1.75; word-break: break-word; }
.chat-app .md > *:first-child { margin-top: 0; }
.chat-app .md code:not(pre code) { background: var(--ch-sidebar); border: 1px solid var(--ch-border);
  padding: 1.5px 6px; border-radius: 6px; font-size: .88em; }
.chat-app .img-thumb { max-width: 240px; max-height: 200px; border-radius: 12px;
  border: 1px solid var(--ch-border); margin-top: 8px; }
.chat-app .msg-actions { display: flex; gap: 4px; margin-top: 8px; opacity: 0; transition: opacity .15s; }
.chat-app .msg-row:hover .msg-actions { opacity: 1; }
.chat-app .msg-actions .icon-btn { width: 26px; height: 26px; font-size: 13px; color: var(--ch-fg3); }
.chat-app .msg-actions .icon-btn:hover { background: var(--ch-hover); color: var(--ch-fg); }
.chat-app .thinking { border-left: 3px solid var(--ch-fg3); padding-left: 12px; color: var(--ch-fg3);
  font-size: 13.5px; font-style: italic; margin: 4px 0 8px; white-space: pre-wrap; }

/* ---------- 输入区(约 800px, 圆角) ---------- */
.chat-app .chat-input-wrap { max-width: 800px; margin: 0 auto; width: 100%; padding: 0 24px 22px; }
.chat-app .chat-input {
  position: relative; background: var(--ch-main);
  border: 1px solid var(--ch-border); border-radius: var(--ch-radius);
  box-shadow: 0 6px 24px rgba(0, 0, 0, .06); overflow: hidden;
}
[data-theme="dark"] .chat-app .chat-input { box-shadow: 0 6px 24px rgba(0, 0, 0, .5); }
.chat-app .chat-input:focus-within { border-color: var(--ch-ink); box-shadow: 0 0 0 3px var(--ch-hover); }
.chat-app .chat-input textarea {
  display: block; width: 100%; border: none; background: none; resize: none;
  min-height: 56px; max-height: 280px; padding: 15px 18px 6px;
  font-size: 15px; line-height: 1.55; color: var(--ch-fg); outline: none;
}
.chat-app .chat-input textarea::placeholder { color: var(--ch-fg3); }
.chat-app .ci-bar { display: flex; align-items: center; gap: 6px; padding: 8px 10px 10px; }
.chat-app .ci-bar .ci-note { margin-left: auto; font-size: 12px; color: var(--ch-fg3); padding-right: 6px; }

/* 输入区图标钮 */
.chat-app .ci-bar .icon-btn { color: var(--ch-fg3); }
.chat-app .ci-bar .icon-btn:hover { color: var(--ch-fg); }
.chat-app .ci-bar .icon-btn.rec { background: var(--ch-voice-tint); color: var(--ch-voice); }
.chat-app .ci-bar .icon-btn.rec { animation: ch-pulse 1.2s ease-in-out infinite; }

/* 发送/停止: 近黑主按钮 */
.chat-app .btn-cta { background: var(--ch-ink); color: var(--ch-ink-fg); }
.chat-app .btn-cta:hover:not(:disabled) { background: var(--ch-ink-hover); }
.chat-app .btn-sec { background: var(--ch-main); color: var(--ch-fg); border-color: var(--ch-border); }

/* key 门禁卡片 */
.chat-app #ch-key-gate { border: 1px solid var(--ch-border); background: var(--ch-sidebar); }
.chat-app #ch-key-gate .input { background: var(--ch-main); }

/* ==================== 语音状态(绿) ==================== */
/* 实时对话条 */
.chat-app .ch-vt-bar {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px; margin-bottom: 8px;
  border: 1px solid var(--ch-voice); border-radius: 12px;
  background: var(--ch-voice-tint);
}
.chat-app .vt-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--ch-voice); flex: none;
  animation: ch-pulse 1.6s ease-in-out infinite; }
.chat-app .vt-dot.talk { background: var(--ch-voice); animation-duration: .9s; }
.chat-app .vt-status { font-size: 13px; color: var(--ch-fg); flex: none; }
.chat-app .vt-partial { font-size: 13.5px; color: var(--ch-fg); white-space: nowrap; overflow: hidden;
  text-overflow: ellipsis; min-width: 0; }

/* 手动录音条 */
.chat-app .ch-mic-bar {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px; margin-bottom: 8px;
  border: 1px solid var(--ch-voice); border-radius: 12px; background: var(--ch-voice-tint);
}
.chat-app .ch-mic-bar.recording .mic-dot { background: var(--ch-voice); animation: ch-pulse 1s ease-in-out infinite; }
.chat-app .ch-mic-bar.recognizing .mic-dot { background: var(--ch-voice); animation: ch-pulse .6s ease-in-out infinite; }
.chat-app .mic-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--ch-voice); flex: none; }
.chat-app .mic-status { font-size: 13px; color: var(--ch-fg); flex: none; }
.chat-app .ch-mic-cancel { border: 1px solid var(--ch-border); background: var(--ch-main);
  color: var(--ch-fg2); font-size: 12px; height: 26px; padding: 0 10px; border-radius: 8px; }
.chat-app .ch-mic-cancel:hover { color: var(--ch-fg); border-color: var(--ch-fg3); }

/* 识别中的输入框提示 */
.chat-app .ch-recognizing-note { display: inline-flex; align-items: center; gap: 6px;
  font-size: 12.5px; color: var(--ch-voice); }

/* ---------- 关键帧 ---------- */
@keyframes ch-pulse { 0%,100% { opacity: 1; } 50% { opacity: .45; } }
.chat-app .btn-ghost.rec { background: var(--ch-voice-tint); color: var(--ch-voice); animation: ch-pulse 1.2s ease-in-out infinite; }

/* ==================== 移动端侧栏抽屉 ==================== */
.chat-app .ch-drawer-mask {
  position: fixed; inset: 0; z-index: 55; background: rgba(0, 0, 0, .4);
  opacity: 0; pointer-events: none; transition: opacity .2s;
}
@media (max-width: 920px) {
  .chat-app .chat-side {
    position: fixed; top: 0; left: 0; bottom: 0; z-index: 60;
    width: 284px; transform: translateX(-100%); transition: transform .22s ease;
    box-shadow: 0 8px 40px rgba(0, 0, 0, .2);
  }
  .chat-app.drawer-open .chat-side { transform: translateX(0); }
  .chat-app.drawer-open .ch-drawer-mask { opacity: 1; pointer-events: auto; }
  .chat-app .chat-side .ch-side-close { display: inline-flex; }
  .chat-app .ch-menu { display: inline-flex; }
  .chat-app .ch-head { padding: 10px 14px; }
  .chat-app .chat-log { padding: 20px 16px 10px; }
  .chat-app .chat-input-wrap { padding: 0 14px 16px; }
  .chat-app .ch-adv { padding: 0 14px; }
  .chat-app .ch-adv.open { padding: 10px 14px; }
}

.chat-app .ch-voice-primary { background: var(--ch-ink); color: var(--ch-ink-fg); border-color: var(--ch-ink); }
.chat-app .ch-vt-bar { flex-wrap: wrap; }
.chat-app #vt-status { white-space: normal; }

.chat-app .ch-vt-bar { position: fixed; inset: 0; z-index: 100; margin: 0; border: 0; border-radius: 0; background: var(--ch-main); color: var(--ch-fg); display: flex; flex-direction: column; flex-wrap: nowrap; padding: 24px; }
.chat-app .voice-head { width: 100%; display: flex; justify-content: space-between; align-items: center; color: var(--ch-fg2); }
.chat-app .voice-head button { background: transparent; border: 0; color: inherit; font-size: 30px; width: 48px; height: 48px; cursor: pointer; }
.chat-app .voice-center { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; width: min(100%,680px); margin: auto; gap: 20px; }
.chat-app .voice-orb { width: clamp(140px,25vw,240px); aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle at 32% 26%,#fff 0%,#b6e1ff 25%,#5ba5f8 53%,#263f94 84%); box-shadow: inset 10px 8px 35px #ffffff90; }
.chat-app .voice-center h2 { font-size: 20px; font-weight: 500; margin: 16px 0 0; }
.chat-app #vt-partial { max-height: 22vh; overflow-y: auto; font-size: 17px; line-height: 1.7; margin: 0; }
.chat-app .voice-hint { font-size: 13px; color: var(--ch-fg3); }
.chat-app .voice-controls { display: flex; justify-content: center; gap: 24px; padding: 16px 0 32px; width: 100%; }
.chat-app .voice-controls button { min-width: 76px; height: 64px; border-radius: 32px; border: 0; padding: 0 18px; background: var(--ch-sidebar); color: var(--ch-fg); font-size: 15px; cursor: pointer; }
.chat-app .voice-controls #vt-end { background: #fbe7e7; color: #a82121; }
.chat-app #vt-mute[aria-pressed="true"] { background: #fbe7e7; color: #a82121; }
@media (prefers-reduced-motion:no-preference) { .chat-app .voice-orb.talk { animation: voice-breathe 2s ease-in-out infinite alternate; } }
@keyframes voice-breathe { to { transform: scale(1.04); } }