/* 对话页 /chat/ —— 延续 subpage 深色配色（粉 / 青柠 / 衬线标题 / 等宽标签） */
.chat-panel [hidden]{display:none!important}
.chat-hero{padding-bottom:64px}
.chat-section{padding:72px 0 96px}
.chat-panel{max-width:860px;margin:0 auto;display:flex;flex-direction:column;background:rgba(255,255,255,.035);border:1px solid rgba(244,168,187,.26);border-radius:4px;overflow:hidden}

.chat-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 22px;border-bottom:1px solid rgba(244,168,187,.2);background:rgba(9,13,18,.5)}
.chat-status{display:flex;align-items:center;gap:10px;margin:0;color:#cfc8c7;font:10px var(--mono);letter-spacing:.12em;text-transform:uppercase}
.chat-dot{width:7px;height:7px;border-radius:50%;background:#7d8994;box-shadow:0 0 0 3px rgba(125,137,148,.18);transition:background .3s,box-shadow .3s}
.chat-dot.is-online{background:var(--lime);box-shadow:0 0 0 3px rgba(217,255,90,.18)}
.chat-dot.is-mock{background:#efadbd;box-shadow:0 0 0 3px rgba(239,173,189,.18)}
.chat-dot.is-error{background:#ff7a6b;box-shadow:0 0 0 3px rgba(255,122,107,.18)}
.chat-clear{padding:6px 10px;border:1px solid rgba(244,168,187,.3);background:transparent;color:#cfc8c7;font:11px var(--sans);letter-spacing:.04em;transition:color .18s,border-color .18s}
.chat-clear:hover{color:#fff;border-color:rgba(244,168,187,.6)}

.chat-log{display:flex;flex-direction:column;gap:22px;min-height:360px;max-height:min(62vh,640px);padding:28px 22px;overflow-y:auto;overscroll-behavior:contain;scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){.chat-log{scroll-behavior:auto}}

.chat-empty{margin:auto 0;padding:8px 0 16px;text-align:left}
.chat-empty-title{margin:0;color:#fff7f4;font:450 26px/1.2 var(--serif);letter-spacing:-.03em}
.chat-empty-lede{max-width:560px;margin:12px 0 0;color:#c8bbc0;font-size:13px;line-height:1.8}
.chat-suggest{display:grid;gap:8px;margin-top:22px}
.chat-suggest button{padding:12px 14px;border:1px solid rgba(244,168,187,.22);background:rgba(255,255,255,.02);color:#e8dadd;font-size:13px;line-height:1.6;text-align:left;transition:border-color .18s,background .18s,color .18s}
.chat-suggest button:hover{color:#fff;border-color:rgba(217,255,90,.5);background:rgba(217,255,90,.06)}

.chat-msg{display:grid;grid-template-columns:28px minmax(0,1fr);gap:14px;max-width:100%}
.chat-msg-mark{display:grid;place-items:center;width:28px;height:28px;font:700 12px var(--mono);letter-spacing:.06em}
.chat-msg.is-user .chat-msg-mark{background:rgba(255,255,255,.08);color:#fff}
.chat-msg.is-assistant .chat-msg-mark{background:var(--lime);color:var(--ink)}
.chat-msg-body{min-width:0;padding-top:3px;color:#f2e9ea;font-size:15px;line-height:1.85;overflow-wrap:anywhere}
.chat-msg.is-user .chat-msg-body{color:#e6d9dc;white-space:pre-wrap}
.chat-msg-body>*:first-child{margin-top:0}
.chat-msg-body>*:last-child{margin-bottom:0}
.chat-msg-body p{margin:0 0 .8em}
.chat-msg-body ul,.chat-msg-body ol{margin:0 0 .8em;padding-left:1.4em}
.chat-msg-body li{margin:.25em 0}
.chat-msg-body a{color:var(--lime);text-decoration:underline;text-underline-offset:3px}
.chat-msg-body strong{color:#fff;font-weight:650}
.chat-msg-body code{padding:.1em .4em;background:rgba(255,255,255,.08);border:1px solid rgba(244,168,187,.18);font:.88em var(--mono)}
.chat-msg-body pre{margin:0 0 .8em;padding:12px 14px;background:#090d12;border:1px solid rgba(244,168,187,.2);overflow-x:auto}
.chat-msg-body pre code{padding:0;border:0;background:transparent;font-size:12.5px;line-height:1.6}
.chat-msg-body h1,.chat-msg-body h2,.chat-msg-body h3{margin:.6em 0 .4em;color:#fff7f4;font:600 1.05em/1.3 var(--sans)}
.chat-cursor{display:inline-block;width:.55em;height:1em;margin-left:2px;vertical-align:-.15em;background:var(--lime);animation:chatBlink 1s steps(2) infinite}
@keyframes chatBlink{to{opacity:0}}
@media(prefers-reduced-motion:reduce){.chat-cursor{animation:none}}

.chat-msg-tools{display:flex;gap:10px;margin-top:8px;opacity:0;transition:opacity .18s}
.chat-msg:hover .chat-msg-tools,.chat-msg:focus-within .chat-msg-tools,.chat-msg.is-failed .chat-msg-tools{opacity:1}
@media(hover:none){.chat-msg-tools{opacity:1}}
.chat-msg-tools button{padding:3px 8px;border:1px solid rgba(244,168,187,.25);background:transparent;color:#a9b0aa;font:10px var(--mono);letter-spacing:.08em;transition:color .18s,border-color .18s}
.chat-msg-tools button:hover{color:#fff;border-color:rgba(244,168,187,.6)}
.chat-msg.is-failed .chat-msg-body{color:#ffb3aa}

.chat-form{position:relative;display:flex;flex-direction:column;gap:12px;padding:16px 22px 18px;border-top:1px solid rgba(244,168,187,.2);background:rgba(9,13,18,.5)}
.chat-form textarea{display:block;width:100%;min-height:48px;max-height:180px;padding:12px 0;border:0;border-bottom:1px solid rgba(244,168,187,.35);border-radius:0;background:transparent;color:#fff;font-size:15px;line-height:1.6;resize:none;overflow-y:hidden;outline:0;transition:border-color .2s}
.chat-form textarea:focus{border-bottom-color:var(--lime)}
.chat-form textarea::placeholder{color:#8e8489}
.chat-form textarea:disabled{opacity:.55}
.chat-actions{display:flex;align-items:center;justify-content:space-between;gap:12px}
.chat-hint{display:flex;gap:14px;flex-wrap:wrap;margin:0;color:#8e8489;font:10px var(--mono);letter-spacing:.06em}
.chat-count.is-near{color:#efadbd}
.chat-send,.chat-stop{display:inline-flex;align-items:center;gap:9px;min-height:40px;padding:0 16px;border:1px solid transparent;font-size:13px;font-weight:700;transition:transform .2s,background .2s,border-color .2s,opacity .2s}
.chat-send{background:var(--lime);color:var(--ink)}
.chat-send:hover:not(:disabled){transform:translateY(-1px);background:#edff9d}
.chat-send:disabled{opacity:.45;cursor:not-allowed}
.chat-stop{border-color:rgba(255,255,255,.4);background:transparent;color:#fff}
.chat-stop:hover{border-color:#fff;background:rgba(255,255,255,.07)}
.chat-error{margin:0;color:#ffb3aa;font-size:13px;line-height:1.6}
.chat-error a{color:var(--lime);text-decoration:underline}

@media(max-width:850px){
  .chat-section{padding:56px 0 78px}
  .chat-log{min-height:300px;max-height:min(58vh,560px);padding:22px 18px;gap:18px}
  .chat-head,.chat-form{padding-left:18px;padding-right:18px}
}
@media(max-width:600px){
  .chat-hero{padding-bottom:48px}
  .chat-section{padding:40px 0 64px}
  .chat-panel{border-left:0;border-right:0;border-radius:0;margin:0 calc(50% - 50vw);max-width:none}
  .chat-head{padding:12px 16px}
  .chat-log{min-height:280px;max-height:min(55vh,520px);padding:20px 16px;gap:16px}
  .chat-empty-title{font-size:22px}
  .chat-msg{grid-template-columns:24px minmax(0,1fr);gap:11px}
  .chat-msg-mark{width:24px;height:24px;font-size:10px}
  .chat-msg-body{font-size:14.5px;line-height:1.8}
  .chat-form{padding:12px 16px calc(14px + env(safe-area-inset-bottom))}
  .chat-form textarea{font-size:16px}
  .chat-actions{flex-wrap:wrap}
  .chat-hint{order:3;width:100%}
  .chat-hint-keys{display:none}
  .chat-send,.chat-stop{min-height:44px;flex:1 1 auto;justify-content:center}
}