/* ============================================================
   Qwen3-VL 智能体演示站 —— 样式（白 / 灰主色调，类 ChatGPT 布局）
   纯手写，无框架、无外部字体依赖
   ============================================================ */

:root {
  --bg:            #ffffff;
  --bg-app:        #f7f8fa;
  --surface:       #ffffff;
  --surface-2:     #f1f3f5;
  --surface-3:     #e9ecef;
  --border:        #e7e9ed;
  --border-strong: #d6d9de;
  --text:          #1d1d1f;
  --text-2:        #585b61;
  --text-3:        #9498a0;
  --accent:        #1d1d1f;   /* 主操作：近黑 */
  --accent-hover:  #3a3a3e;
  --link:          #2563eb;   /* 仅链接 / 在线状态用克制蓝 */
  --ok:            #1f9d57;
  --warn:          #c47d12;
  --err:           #d23b3b;
  --radius:        14px;
  --radius-sm:     10px;
  --radius-xs:     8px;
  --shadow:        0 1px 2px rgba(20,24,33,.05), 0 6px 18px rgba(20,24,33,.06);
  --shadow-lg:     0 10px 40px rgba(20,24,33,.14);
  --sidebar-w:     280px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body { height: 100%; margin: 0; }

body {
  display: flex;
  background: var(--bg-app);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
button { font-family: inherit; }

/* ─────────────── 侧边栏 ─────────────── */
.sidebar {
  flex: none;
  width: var(--sidebar-w);
  background: var(--bg-app);
  border-right: 1px solid var(--border);
  height: 100vh;
  position: sticky;
  top: 0;
  z-index: 30;
  transition: transform .22s ease;
}
.sidebar-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 12px 10px;
  gap: 10px;
}

.new-chat {
  display: flex; align-items: center; gap: 10px;
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-size: 14px; font-weight: 600;
  cursor: pointer;
  transition: .15s;
}
.new-chat svg { width: 17px; height: 17px; color: var(--text-2); }
.new-chat:hover { background: var(--surface-2); border-color: var(--text-3); }

.conv-search {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text-3);
}
.conv-search svg { width: 15px; height: 15px; flex: none; }
.conv-search input {
  border: 0; outline: none; background: transparent;
  width: 100%; font-family: inherit; font-size: 13.5px; color: var(--text);
}
.conv-search input::placeholder { color: var(--text-3); }

.conv-list {
  flex: 1 1 auto;
  overflow-y: auto;
  margin: 0 -4px;
  padding: 0 4px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.conv-group-label {
  font-size: 11px; font-weight: 600; letter-spacing: .04em;
  color: var(--text-3); text-transform: uppercase;
  padding: 12px 8px 4px;
}
.conv-item {
  position: relative;
  display: flex; align-items: center; gap: 10px;
  width: 100%;
  padding: 9px 10px;
  border: 0; border-radius: var(--radius-xs);
  background: transparent;
  color: var(--text-2);
  text-align: left;
  cursor: pointer;
  transition: background .14s;
}
.conv-item:hover { background: var(--surface-2); }
.conv-item.active { background: var(--surface-3); color: var(--text); }
.conv-item .ci-icon { flex: none; width: 17px; height: 17px; color: var(--text-3); }
.conv-item.active .ci-icon { color: var(--text-2); }
.conv-main { min-width: 0; flex: 1; }
.conv-title {
  display: block;
  font-size: 13.5px; font-weight: 550;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.conv-prev {
  display: block;
  font-size: 12px; color: var(--text-3);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.conv-actions {
  position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  display: none; gap: 2px;
  background: inherit; padding-left: 6px;
}
.conv-item:hover .conv-actions { display: flex; }
.conv-item.active .conv-actions { background: var(--surface-3); }
.conv-actions button {
  width: 26px; height: 26px;
  display: grid; place-items: center;
  border: 0; border-radius: 6px;
  background: transparent; color: var(--text-3);
  cursor: pointer; transition: .14s;
}
.conv-actions button:hover { background: rgba(0,0,0,.07); color: var(--text); }
.conv-actions button svg { width: 14px; height: 14px; }
.conv-actions button.danger:hover { color: var(--err); background: rgba(210,59,59,.1); }

.conv-empty {
  text-align: center; color: var(--text-3);
  font-size: 12.5px; padding: 30px 10px;
}

.sidebar-foot {
  display: flex; gap: 8px;
  border-top: 1px solid var(--border);
  padding-top: 10px;
}
.side-btn {
  flex: 1;
  display: flex; align-items: center; justify-content: center; gap: 7px;
  padding: 9px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface);
  color: var(--text-2);
  font-size: 13px; font-weight: 550;
  cursor: pointer; transition: .15s;
}
.side-btn svg { width: 15px; height: 15px; }
.side-btn:hover { background: var(--surface-2); color: var(--text); border-color: var(--border-strong); }

.sidebar-mask {
  position: fixed; inset: 0; z-index: 25;
  background: rgba(20,24,33,.32);
}

/* ─────────────── 主区域 ─────────────── */
.main {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* 顶栏 */
.topbar {
  flex: none;
  display: flex; align-items: center; gap: 12px;
  padding: 11px 18px;
  background: rgba(255,255,255,.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 20;
}
.brand { display: flex; align-items: center; gap: 11px; min-width: 0; }
.logo {
  flex: none; width: 36px; height: 36px;
  display: grid; place-items: center;
  border-radius: 10px;
  background: var(--text);
  color: #fff;
}
.logo svg { width: 21px; height: 21px; }
.brand-text { min-width: 0; }
.brand-text h1 { margin: 0; font-size: 15px; font-weight: 650; letter-spacing: -.01em; white-space: nowrap; }
.brand-text p { margin: 1px 0 0; font-size: 12px; color: var(--text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }

.status {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 11px; border-radius: 999px;
  background: var(--surface-2); border: 1px solid var(--border);
  font-size: 12px; color: var(--text-2);
  user-select: none;
}
.status .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--text-3); transition: background .2s; }
.status.ok   .dot { background: var(--ok);   box-shadow: 0 0 0 3px rgba(31,157,87,.15); }
.status.err  .dot { background: var(--err);  box-shadow: 0 0 0 3px rgba(210,59,59,.15); }
.status.warn .dot { background: var(--warn); box-shadow: 0 0 0 3px rgba(196,125,18,.15); }
.status.loading .dot { animation: pulse 1.2s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: .35; } 50% { opacity: 1; } }

.icon-btn {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border: 1px solid var(--border); border-radius: 10px;
  background: var(--surface); color: var(--text-2);
  cursor: pointer; transition: .16s; text-decoration: none;
}
.icon-btn:hover { color: var(--text); border-color: var(--border-strong); background: var(--surface-2); }
.icon-btn svg { width: 18px; height: 18px; }

/* ─────────────── 对话区 ─────────────── */
.chat { flex: 1 1 auto; overflow-y: auto; overscroll-behavior: contain; background: var(--bg); }
.chat-inner { max-width: 780px; margin: 0 auto; padding: 28px 20px 40px; }

.welcome { text-align: center; padding: 40px 0 24px; }
.welcome .wlogo {
  width: 58px; height: 58px; margin: 0 auto 16px;
  display: grid; place-items: center; border-radius: 16px;
  background: var(--text); color: #fff;
  box-shadow: var(--shadow);
}
.welcome .wlogo svg { width: 31px; height: 31px; }
.welcome h2 { margin: 0 0 8px; font-size: 22px; font-weight: 650; letter-spacing: -.02em; }
.welcome p  { margin: 0 auto; max-width: 460px; color: var(--text-2); font-size: 14px; }

.suggestions {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 10px; margin-top: 26px;
}
.suggestion {
  text-align: left; padding: 13px 15px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--text-2);
  font-size: 13.5px; line-height: 1.5; cursor: pointer; transition: .16s;
}
.suggestion:hover { border-color: var(--text-3); color: var(--text); transform: translateY(-1px); box-shadow: var(--shadow); }

/* 消息 */
.msg { margin-bottom: 22px; display: flex; gap: 12px; position: relative; }
.msg.user { flex-direction: row-reverse; }
.avatar {
  flex: none; width: 32px; height: 32px; border-radius: 9px;
  display: grid; place-items: center;
  font-size: 12px; font-weight: 700; color: #fff; background: var(--text);
  user-select: none;
}
.msg.user .avatar { background: #6b7077; }
.avatar svg { width: 18px; height: 18px; }

.body { min-width: 0; max-width: calc(100% - 52px); }
.msg.user .body { display: flex; flex-direction: column; align-items: flex-end; }

.bubble {
  display: inline-block; padding: 11px 15px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border);
  box-shadow: var(--shadow); word-break: break-word; overflow-wrap: anywhere;
  max-width: 100%;
}
.att-img { display: block; max-width: 280px; max-height: 280px; border-radius: 10px; margin: 2px 0 6px; border: 1px solid var(--border); }
.att-file { display: flex; align-items: center; gap: 8px; margin: 2px 0 4px; }
.att-file-ico { font-size: 17px; line-height: 1; }
.att-file-name { font-size: 13px; font-weight: 600; color: var(--text); }
.att-file-size { font-size: 11px; color: var(--text-3); font-family: var(--mono); }
.att-filetext { margin: 6px 0 2px; padding: 10px 12px; border-radius: 9px; background: var(--surface-2); border: 1px solid var(--border); font-family: var(--mono); font-size: 12px; line-height: 1.55; color: var(--text-2); white-space: pre-wrap; word-break: break-word; max-height: 200px; overflow-y: auto; }
.msg.user .bubble { background: var(--surface-3); border-color: transparent; color: var(--text); }
.msg.user .bubble * { color: var(--text) !important; }

.name { font-size: 12px; color: var(--text-3); margin-bottom: 5px; padding-left: 2px; }

/* 单条消息操作（复制） */
.msg-actions {
  position: absolute; top: -6px; right: 4px;
  display: none; gap: 2px;
}
.msg:hover .msg-actions { display: flex; }
.msg.user .msg-actions { right: auto; left: 4px; }
.msg-actions button {
  width: 28px; height: 28px; display: grid; place-items: center;
  border: 1px solid var(--border); border-radius: 7px;
  background: var(--surface); color: var(--text-3); cursor: pointer; transition: .14s;
}
.msg-actions button:hover { color: var(--text); border-color: var(--border-strong); background: var(--surface-2); }
.msg-actions button svg { width: 14px; height: 14px; }

/* Markdown 渲染 */
.md > *:first-child { margin-top: 0; }
.md > *:last-child  { margin-bottom: 0; }
.md p  { margin: 0 0 10px; }
.md h1, .md h2, .md h3, .md h4 { margin: 18px 0 8px; font-weight: 650; line-height: 1.35; letter-spacing: -.01em; }
.md h1 { font-size: 19px; } .md h2 { font-size: 17px; } .md h3 { font-size: 15.5px; } .md h4 { font-size: 14.5px; }
.md ul, .md ol { margin: 0 0 10px; padding-left: 22px; }
.md li { margin: 3px 0; }
.md li > ul, .md li > ol { margin: 3px 0; }
.md a { color: var(--link); text-decoration: none; border-bottom: 1px solid rgba(37,99,235,.3); }
.md a:hover { border-bottom-color: var(--link); }
.md blockquote { margin: 10px 0; padding: 4px 14px; border-left: 3px solid var(--border-strong); background: var(--surface-2); border-radius: 0 8px 8px 0; color: var(--text-2); }
.md hr { margin: 16px 0; border: 0; border-top: 1px solid var(--border); }
.md code { font-family: var(--mono); font-size: .88em; padding: 2px 6px; border-radius: 5px; background: var(--surface-2); border: 1px solid var(--border); }
.md pre { position: relative; margin: 12px 0; padding: 14px 16px; border-radius: var(--radius-sm); background: #1e2024; overflow-x: auto; }
.md pre code { display: block; padding: 0; border: 0; background: none; color: #dfe3f2; font-size: 13px; line-height: 1.6; white-space: pre; }
.md table { border-collapse: collapse; margin: 12px 0; font-size: 13.5px; display: block; overflow-x: auto; }
.md th, .md td { border: 1px solid var(--border); padding: 7px 11px; text-align: left; }
.md th { background: var(--surface-2); font-weight: 600; }

.copy-btn {
  position: absolute; top: 8px; right: 8px;
  padding: 3px 9px; font-size: 11.5px; border-radius: 6px;
  border: 1px solid rgba(255,255,255,.16); background: rgba(255,255,255,.08);
  color: #cdd3e8; cursor: pointer; opacity: 0; transition: .16s;
}
.md pre:hover .copy-btn { opacity: 1; }
.copy-btn:hover { background: rgba(255,255,255,.18); color: #fff; }

/* 工具调用卡片 */
.tool-card { margin-bottom: 8px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface); overflow: hidden; font-size: 13px; }
.tool-head { display: flex; align-items: center; gap: 8px; padding: 9px 13px; cursor: pointer; user-select: none; }
.tool-head:hover { background: var(--surface-2); }
.tool-badge { flex: none; padding: 2px 8px; border-radius: 6px; background: var(--surface-2); color: var(--text-2); font-family: var(--mono); font-size: 11.5px; font-weight: 600; border: 1px solid var(--border); }
.tool-title { flex: 1; color: var(--text-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tool-caret { flex: none; width: 14px; height: 14px; color: var(--text-3); transition: transform .2s; }
.tool-card.open .tool-caret { transform: rotate(90deg); }
.tool-body { display: none; padding: 0 13px 12px; color: var(--text-2); font-family: var(--mono); font-size: 12.5px; white-space: pre-wrap; word-break: break-word; max-height: 320px; overflow-y: auto; }
.tool-card.open .tool-body { display: block; }

.cursor { display: inline-block; width: 7px; height: 15px; margin-left: 2px; vertical-align: -2px; background: var(--text); border-radius: 1px; animation: blink 1s steps(2, start) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ─────────────── 输入区 ─────────────── */
.composer { flex: none; padding: 10px 20px 16px; background: linear-gradient(to top, var(--bg) 62%, transparent); }
.composer-inner { max-width: 780px; margin: 0 auto; }
.active-skills { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 2px 8px; }
.skill-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 8px 4px 11px; border-radius: 999px;
  background: var(--surface-2); border: 1px solid var(--border);
  font-size: 12px; color: var(--text-2);
}
.skill-chip b { font-weight: 600; color: var(--text); }
.skill-chip button { width: 18px; height: 18px; display: grid; place-items: center; border: 0; border-radius: 50%; background: transparent; color: var(--text-3); cursor: pointer; }
.skill-chip button:hover { color: var(--err); background: rgba(210,59,59,.1); }
.skill-chip button svg { width: 12px; height: 12px; }

.input-wrap {
  display: flex; align-items: flex-end; gap: 10px;
  padding: 8px 8px 8px 10px;
  background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: var(--radius); box-shadow: var(--shadow); transition: .16s;
}
.input-wrap:focus-within { border-color: var(--text-3); box-shadow: 0 0 0 4px rgba(0,0,0,.04); }
.attach-btn {
  flex: none; width: 38px; height: 38px; display: grid; place-items: center;
  border: 0; border-radius: 10px; background: transparent; color: var(--text-2);
  cursor: pointer; transition: .16s;
}
.attach-btn svg { width: 19px; height: 19px; }
.attach-btn:hover { color: var(--text); background: var(--surface-2); }
.attach-btn:disabled { opacity: .4; cursor: not-allowed; }
#input { flex: 1; border: 0; outline: none; resize: none; max-height: 180px; padding: 6px 0; font-family: inherit; font-size: 15px; line-height: 1.6; color: var(--text); background: transparent; }
#input::placeholder { color: var(--text-3); }

/* 文件选择框：视觉隐藏但保留在文档流中，确保程序化 .click() 在所有浏览器都能弹出选择器
   （display:none / [hidden] 在 Safari 等内核下会令 .click() 无效） */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* 附件预览 */
.att-preview {
  display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 2px 0;
}
.att-thumb {
  position: relative; width: 76px; height: 76px; border-radius: 10px;
  overflow: hidden; border: 1px solid var(--border); background: var(--surface-2);
  box-shadow: var(--shadow);
}
.att-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.att-chip {
  display: inline-flex; align-items: center; gap: 7px; max-width: 240px;
  padding: 7px 9px; border-radius: 10px; background: var(--surface-2);
  border: 1px solid var(--border); box-shadow: var(--shadow);
}
.att-chip-ico { font-size: 16px; line-height: 1; }
.att-chip-name { font-size: 12.5px; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.att-chip-size { flex: none; font-size: 11px; color: var(--text-3); font-family: var(--mono); }
.att-x {
  position: absolute; top: -6px; right: -6px;
  width: 22px; height: 22px; display: grid; place-items: center;
  border: 1px solid var(--border-strong); border-radius: 50%;
  background: #fff; color: var(--text-2); cursor: pointer; transition: .14s;
  font-size: 15px; line-height: 1; box-shadow: var(--shadow);
}
.att-thumb .att-x { top: 3px; right: 3px; width: 20px; height: 20px; background: rgba(255,255,255,.9); }
.att-x:hover { color: #fff; background: var(--err); border-color: var(--err); }
.send {
  flex: none; width: 38px; height: 38px; display: grid; place-items: center;
  border: 0; border-radius: 10px; background: var(--accent); color: #fff; cursor: pointer; transition: .16s;
}
.send svg { width: 18px; height: 18px; }
.send:disabled { opacity: .35; cursor: not-allowed; }
.send:not(:disabled):hover { background: var(--accent-hover); }
.send .ic-stop { display: none; }
.send.stopping .ic-send { display: none; }
.send.stopping .ic-stop { display: block; }

.hint { margin: 8px 2px 0; font-size: 11.5px; color: var(--text-3); text-align: center; }

/* ─────────────── 抽屉（设置 / 技能） ─────────────── */
.drawer-mask { position: fixed; inset: 0; background: rgba(20,24,33,.32); z-index: 40; animation: fade .2s; }
@keyframes fade { from { opacity: 0; } }
.drawer {
  position: fixed; top: 0; right: 0; bottom: 0;
  width: min(400px, 100vw); background: var(--surface);
  border-left: 1px solid var(--border); box-shadow: var(--shadow-lg);
  z-index: 41; display: flex; flex-direction: column;
  animation: slide .22s cubic-bezier(.22,.8,.3,1);
}
@keyframes slide { from { transform: translateX(100%); } }
.drawer-head { flex: none; display: flex; align-items: center; justify-content: space-between; padding: 16px 18px; border-bottom: 1px solid var(--border); }
.drawer-head h2 { margin: 0; font-size: 15px; font-weight: 650; }
.drawer-body { flex: 1; overflow-y: auto; padding: 18px; }

.field { display: block; margin-bottom: 20px; }
.field > span { display: block; margin-bottom: 7px; font-size: 13px; font-weight: 600; color: var(--text-2); }
.field > span b { color: var(--text); font-family: var(--mono); }
.field em { display: block; margin-top: 6px; font-size: 11.5px; font-style: normal; color: var(--text-3); }
.field input[type="url"], .field input[type="text"], .skill-form input[type="text"] {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border-strong);
  border-radius: 9px; background: var(--surface); color: var(--text);
  font-family: var(--mono); font-size: 13px; outline: none; transition: .16s;
}
.field input[type="url"]:focus, .skill-form input[type="text"]:focus { border-color: var(--text-3); box-shadow: 0 0 0 3px rgba(0,0,0,.05); }
.field input[type="range"] { width: 100%; accent-color: var(--text); }

.health-box { margin: 0; padding: 11px 13px; border-radius: 9px; background: var(--surface-2); border: 1px solid var(--border); font-family: var(--mono); font-size: 11.5px; line-height: 1.6; color: var(--text-2); white-space: pre-wrap; word-break: break-all; max-height: 240px; overflow-y: auto; }

.drawer-actions { display: flex; flex-direction: column; gap: 8px; margin-top: 26px; }
.btn { padding: 10px 14px; border-radius: 9px; border: 1px solid var(--border-strong); background: var(--surface); color: var(--text-2); font-size: 13.5px; cursor: pointer; transition: .16s; }
.btn:hover { border-color: var(--text); color: var(--text); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-hover); }
.btn.ghost { background: transparent; }

/* 技能表单与列表 */
.skill-form { display: flex; flex-direction: column; gap: 9px; margin-bottom: 18px; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.skill-form textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--border-strong); border-radius: 9px; background: var(--surface); color: var(--text); font-family: inherit; font-size: 13.5px; line-height: 1.55; resize: vertical; outline: none; transition: .16s; }
.skill-form textarea:focus { border-color: var(--text-3); box-shadow: 0 0 0 3px rgba(0,0,0,.05); }
.skill-list { display: flex; flex-direction: column; gap: 8px; }
.skill-card { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px 13px; background: var(--surface); }
.skill-card .sc-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.skill-card .sc-name { font-size: 14px; font-weight: 600; color: var(--text); }
.skill-card .sc-prompt { margin: 6px 0 10px; font-size: 12.5px; color: var(--text-2); white-space: pre-wrap; word-break: break-word; max-height: 96px; overflow-y: auto; }
.skill-card .sc-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.sc-toggle { display: inline-flex; align-items: center; gap: 7px; font-size: 12.5px; color: var(--text-2); cursor: pointer; user-select: none; }
.sc-toggle input { width: 15px; height: 15px; accent-color: var(--text); cursor: pointer; }
.sc-links { margin-left: auto; display: flex; gap: 4px; }
.sc-links button { width: 28px; height: 28px; display: grid; place-items: center; border: 0; border-radius: 7px; background: transparent; color: var(--text-3); cursor: pointer; transition: .14s; }
.sc-links button:hover { color: var(--text); background: var(--surface-2); }
.sc-links button.danger:hover { color: var(--err); background: rgba(210,59,59,.1); }
.sc-links button svg { width: 14px; height: 14px; }
.skill-tip { margin: 16px 2px 0; font-size: 12px; color: var(--text-3); line-height: 1.6; }
.skill-empty { text-align: center; color: var(--text-3); font-size: 13px; padding: 20px 10px; }

/* ─────────────── 提示条 / 轻提示 ─────────────── */
.banner {
  position: fixed; left: 50%; bottom: 96px; transform: translateX(-50%);
  z-index: 30; display: flex; align-items: center; gap: 12px;
  max-width: min(620px, calc(100vw - 32px)); padding: 11px 14px;
  border-radius: 11px; background: #fff; border: 1px solid var(--border-strong);
  color: var(--text-2); font-size: 13px; box-shadow: var(--shadow-lg);
  animation: rise .28s cubic-bezier(.22,.8,.3,1);
}
@keyframes rise { from { opacity: 0; transform: translate(-50%, 10px); } }
.banner-close { flex: none; width: 22px; height: 22px; display: grid; place-items: center; border: 0; border-radius: 6px; background: transparent; color: var(--text-3); cursor: pointer; }
.banner-close:hover { opacity: 1; background: var(--surface-2); }
.banner-close svg { width: 14px; height: 14px; }

.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%);
  z-index: 50; display: flex; align-items: center; gap: 14px;
  padding: 11px 14px; border-radius: 11px;
  background: var(--text); color: #fff; font-size: 13px;
  box-shadow: var(--shadow-lg); animation: rise .24s cubic-bezier(.22,.8,.3,1);
}
.toast button { border: 0; background: transparent; color: #9ec1ff; font-size: 13px; font-weight: 600; cursor: pointer; padding: 0; }
.toast button:hover { color: #cfe0ff; }

/* ─────────────── 响应式 ─────────────── */
@media (max-width: 860px) {
  .sidebar { position: fixed; left: 0; top: 0; transform: translateX(-100%); box-shadow: var(--shadow-lg); }
  body.sidebar-open .sidebar { transform: translateX(0); }
  .topbar { padding: 10px 14px; }
  .brand-text p { display: none; }
  .chat-inner { padding: 20px 14px 32px; }
  .composer { padding: 8px 14px 12px; }
  .suggestions { grid-template-columns: 1fr; }
  .status .status-text { display: none; }
  .status { padding: 6px 9px; }
}
@media (min-width: 861px) {
  #btn-toggle { display: none; }
  .sidebar-mask { display: none !important; }
}