/* 中枢网页对话：手机优先。配色与中枢一致（冷灰底、白卡细描边、墨黑药丸主按钮、只一个紫色强调）。 */
:root {
  --bg: #F3F3F6; --panel: #FFFFFF; --panel2: #FAFAFC;
  --ink: #15151A; --ink2: #4B4B55; --ink3: #878792; --ink4: #B6B6BF;
  --hair: rgba(21, 21, 26, .07); --hair2: rgba(21, 21, 26, .12);
  --accent: #5A48E0; --accent-bg: rgba(90, 72, 224, .08); --accent-bg2: rgba(90, 72, 224, .14);
  --ok: #3A9A72; --ok-bg: rgba(58, 154, 114, .1);
  --warn: #A9803A; --warn-bg: #FBF7EE;
  --danger: #C4554D; --danger-bg: rgba(196, 85, 77, .08);
  --btn-dark: linear-gradient(180deg, #2A2A31 0%, #15151A 100%); --btn-dark-ink: #FFFFFF;
  --code-bg: #F4F4F7;
  --shadow: 0 1px 2px rgba(21, 21, 26, .04), 0 8px 24px -12px rgba(21, 21, 26, .14);
  --sans: "Segoe UI Variable Text", "Segoe UI", -apple-system, "PingFang SC", "Microsoft YaHei UI", "Noto Sans CJK SC", system-ui, sans-serif;
  --mono: "Cascadia Code", Consolas, "SF Mono", Menlo, "Microsoft YaHei UI", monospace;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #0A0A0C; --panel: #131316; --panel2: #0F0F12;
  --ink: #ECECF1; --ink2: #B4B4BE; --ink3: #7C7C88; --ink4: #4A4A55;
  --hair: rgba(255, 255, 255, .06); --hair2: rgba(255, 255, 255, .11);
  --accent: #B9A6FF; --accent-bg: rgba(185, 166, 255, .09); --accent-bg2: rgba(185, 166, 255, .16);
  --ok: #7BE3B0; --ok-bg: rgba(123, 227, 176, .09);
  --warn: #FFB86B; --warn-bg: rgba(255, 184, 107, .08);
  --danger: #FF8A80; --danger-bg: rgba(255, 138, 128, .09);
  --btn-dark: linear-gradient(180deg, #F2F2F6 0%, #D9D9E0 100%); --btn-dark-ink: #0A0A0C;
  --code-bg: #1A1A1F;
  --shadow: none;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--ink); }
body { font: 15px/1.65 var(--sans); -webkit-font-smoothing: antialiased; -webkit-text-size-adjust: 100%; }
button, input, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: var(--accent); }
.boot { padding: 40vh 16px 0; text-align: center; color: var(--ink3); }

.app { height: 100%; height: 100dvh; display: flex; flex-direction: column; max-width: 860px; margin: 0 auto; }

/* 顶栏 */
.top { flex: none; display: flex; align-items: center; gap: 8px; padding: calc(10px + env(safe-area-inset-top)) 12px 10px; border-bottom: 1px solid var(--hair); background: var(--bg); }
.top .title { flex: 1; min-width: 0; }
.top .name { font-weight: 600; font-size: 15px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.top .sub { font-size: 12px; color: var(--ink3); display: flex; align-items: center; gap: 6px; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ink4); flex: none; }
.dot.ok { background: var(--ok); }
.dot.bad { background: var(--danger); }
.dot.busy { background: var(--accent); animation: pulse 1.4s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .35; } }
@media (prefers-reduced-motion: reduce) { .dot.busy { animation: none; } }
.icon-btn { flex: none; min-width: 40px; height: 40px; padding: 0 10px; border-radius: 12px; border: 1px solid var(--hair2); background: var(--panel); display: inline-flex; align-items: center; justify-content: center; gap: 6px; font-size: 13.5px; }
.icon-btn:active { transform: scale(.97); }
.icon-btn svg { width: 18px; height: 18px; }

/* 消息区 */
.msgs { flex: 1; overflow-y: auto; -webkit-overflow-scrolling: touch; padding: 14px 12px 8px; overscroll-behavior: contain; }
.empty { text-align: center; color: var(--ink3); padding: 18vh 20px 0; font-size: 14px; }
.empty b { display: block; color: var(--ink); font-size: 18px; font-weight: 600; margin-bottom: 6px; }
.row { display: flex; margin: 10px 0; }
.row.me { justify-content: flex-end; }
.bubble { max-width: 86%; padding: 9px 13px; border-radius: 16px; word-wrap: break-word; overflow-wrap: anywhere; }
.me .bubble { background: var(--btn-dark); color: var(--btn-dark-ink); border-bottom-right-radius: 6px; white-space: pre-wrap; }
.ai .bubble { background: var(--panel); border: 1px solid var(--hair); box-shadow: var(--shadow); border-bottom-left-radius: 6px; max-width: 100%; }
.ai .bubble.live { border-color: var(--accent-bg2); }
.bubble p { margin: 0 0 .55em; }
.bubble p:last-child { margin-bottom: 0; }
.bubble .h { display: block; font-weight: 650; margin: .35em 0 .2em; }
.bubble .li { display: block; padding-left: 1.1em; text-indent: -1.1em; }
.bubble code { font: 13px var(--mono); background: var(--code-bg); padding: 1px 5px; border-radius: 5px; }
.bubble pre { font: 12.5px/1.55 var(--mono); background: var(--code-bg); padding: 9px 11px; border-radius: 10px; overflow-x: auto; margin: .4em 0; white-space: pre; }
.bubble pre code { background: none; padding: 0; }
.meta { font-size: 11.5px; color: var(--ink3); margin: 2px 4px 0; }
.me + .meta { text-align: right; }

.tool { display: flex; align-items: baseline; gap: 7px; margin: 4px 2px; font-size: 12.5px; color: var(--ink3); line-height: 1.5; }
.tool .tn { flex: none; font-weight: 600; color: var(--ink2); }
.tool .ts { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-family: var(--mono); font-size: 12px; }
.tool .st { flex: none; }
.tool .st.ok { color: var(--ok); }
.tool .st.bad { color: var(--danger); }
.tool-err { margin: 0 2px 6px 18px; font: 12px/1.5 var(--mono); color: var(--danger); white-space: pre-wrap; max-height: 7.5em; overflow: hidden; }

.card { margin: 10px 0; padding: 12px 13px; border-radius: 14px; background: var(--panel); border: 1px solid var(--hair2); box-shadow: var(--shadow); }
.card.ask { border-color: var(--accent-bg2); background: linear-gradient(0deg, var(--accent-bg), var(--accent-bg)), var(--panel); }
.card .ct { font-weight: 600; font-size: 14px; display: flex; gap: 6px; align-items: center; }
.card .cs { color: var(--ink2); font-size: 13px; margin: 3px 0 8px; }
.card pre { font: 12px/1.5 var(--mono); background: var(--code-bg); border-radius: 10px; padding: 9px 11px; margin: 0 0 10px; max-height: 38vh; overflow: auto; white-space: pre-wrap; word-break: break-all; }
.card .acts { display: flex; gap: 8px; flex-wrap: wrap; }
.card .done { font-size: 13px; color: var(--ink3); }
.card .done.ok { color: var(--ok); }
.card .done.bad { color: var(--danger); }
.card.err { border-color: transparent; background: var(--danger-bg); color: var(--danger); font-size: 14px; white-space: pre-wrap; }

.btn { height: 38px; padding: 0 16px; border-radius: 999px; border: 1px solid var(--hair2); background: var(--panel); font-size: 14px; font-weight: 500; }
.btn.dark { background: var(--btn-dark); color: var(--btn-dark-ink); border-color: transparent; }
.btn.danger { color: var(--danger); }
.btn:disabled { opacity: .5; cursor: default; }
.btn:active:not(:disabled) { transform: scale(.98); }

.result { text-align: center; font-size: 11.5px; color: var(--ink3); margin: 8px 0 14px; }
.result.bad { color: var(--danger); }
.thinking { display: flex; align-items: center; gap: 8px; color: var(--ink3); font-size: 13px; margin: 8px 4px; }

/* 输入区 */
.composer { flex: none; display: flex; gap: 8px; align-items: flex-end; padding: 8px 10px calc(10px + env(safe-area-inset-bottom)); border-top: 1px solid var(--hair); background: var(--bg); }
.composer textarea { flex: 1; min-height: 44px; max-height: 38vh; resize: none; padding: 10px 13px; border-radius: 16px; border: 1px solid var(--hair2); background: var(--panel); line-height: 1.5; outline: none; font-size: 16px; }
.composer textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-bg); }
.composer .btn { height: 44px; flex: none; }

/* 对话列表抽屉 */
.drawer-mask { position: fixed; inset: 0; background: rgba(10, 10, 12, .32); z-index: 20; }
.drawer { position: fixed; top: 0; bottom: 0; left: 0; width: min(86vw, 340px); background: var(--bg); z-index: 21; display: flex; flex-direction: column; box-shadow: 0 0 40px rgba(0, 0, 0, .2); padding-top: env(safe-area-inset-top); }
.drawer .dh { display: flex; align-items: center; gap: 8px; padding: 12px; border-bottom: 1px solid var(--hair); font-weight: 600; }
.drawer .dh span { flex: 1; }
.drawer .list { flex: 1; overflow-y: auto; padding: 6px; }
.thread { display: flex; align-items: center; gap: 6px; padding: 10px 10px; border-radius: 12px; }
.thread.cur { background: var(--accent-bg); }
.thread .tt { flex: 1; min-width: 0; }
.thread .tn { font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.thread .tw { font-size: 11.5px; color: var(--ink3); }
.thread .del { border: none; background: none; color: var(--ink4); padding: 6px; font-size: 12px; }
.drawer .df { padding: 10px 12px calc(12px + env(safe-area-inset-bottom)); border-top: 1px solid var(--hair); font-size: 12px; color: var(--ink3); display: flex; gap: 8px; align-items: center; }
.drawer .df .grow { flex: 1; }

/* 登录 */
.login { flex: 1; display: flex; flex-direction: column; justify-content: center; padding: 24px; gap: 14px; max-width: 400px; width: 100%; margin: 0 auto; }
.login .mark { width: 52px; height: 52px; border-radius: 15px; background: var(--btn-dark); color: var(--btn-dark-ink); display: flex; align-items: center; justify-content: center; font-size: 26px; font-weight: 600; }
.login h1 { margin: 6px 0 0; font-size: 22px; font-weight: 600; }
.login p { margin: 0; color: var(--ink3); font-size: 14px; }
.login input { height: 48px; padding: 0 14px; border-radius: 14px; border: 1px solid var(--hair2); background: var(--panel); font-size: 16px; outline: none; }
.login input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-bg); }
.login .btn { height: 48px; }
.login .msg { min-height: 1.4em; font-size: 13.5px; color: var(--danger); }
.login .hint { font-size: 12.5px; color: var(--ink3); }

.banner { flex: none; margin: 8px 12px 0; padding: 8px 12px; border-radius: 12px; font-size: 13px; background: var(--warn-bg); color: var(--warn); }
.banner.bad { background: var(--danger-bg); color: var(--danger); }