.alltier-chat-layout{grid-template-columns:minmax(260px,330px) minmax(0,1fr);gap:24px;max-width:1360px;margin:auto;padding:28px;display:grid}.alltier-chat-controls{min-width:0}.alltier-chat-controls h1{margin-bottom:15px;font-size:29px;line-height:1.2}.alltier-chat-controls h2{margin:20px 0 10px;font-size:19px}.alltier-chat-controls p{margin:10px 0;font-size:13px}.alltier-chat-controls label{gap:7px;margin:16px 0;font-size:13px;display:grid}.alltier-chat-controls select,.alltier-chat-controls input[type=number]{border:1px solid var(--at-line);background:var(--at-surface);width:100%;min-height:44px;color:var(--at-text);border-radius:8px;padding:9px}.alltier-chat-controls .alltier-chat-check{align-items:flex-start;gap:10px;display:flex}.alltier-chat-check input{width:20px;height:20px;accent-color:var(--at-primary);flex:none;margin:0}.alltier-chat-controls button{margin:5px 5px 5px 0}.alltier-chat-page button:disabled{opacity:.5;cursor:default}.alltier-chat-controls progress{width:100%;margin-top:16px}.alltier-conversation{background:var(--at-surface);border:1px solid var(--at-line);border-radius:16px;flex-direction:column;min-width:0;height:calc(100dvh - 145px);min-height:420px;display:flex;position:sticky;top:110px;overflow:hidden}.alltier-chat-transcript{overscroll-behavior:contain;flex:1;min-height:0;padding:26px;overflow:auto}.alltier-chat-empty{padding:25px 0}.alltier-chat-empty h2{margin:12px 0;font-size:30px}.alltier-chat-empty p{max-width:60ch;margin:14px 0 25px;font-size:14px}.alltier-chat-empty button{text-align:left;max-width:100%;min-height:44px;margin:10px 0;display:block}.alltier-chat-message{border:1px solid var(--at-line);background:var(--at-bg);border-radius:12px;margin-bottom:16px;padding:18px}.alltier-chat-message.user{margin-left:24px}.alltier-chat-message h2{letter-spacing:0;color:var(--at-accent);margin-bottom:10px;font-size:13px}.alltier-chat-message p{white-space:pre-wrap;overflow-wrap:anywhere;color:var(--at-text);font-size:15px}.alltier-chat-composer{border-top:1px solid var(--at-line);flex:none;padding:18px}.alltier-chat-composer label{margin-bottom:8px;font-size:13px;font-weight:600;display:block}.alltier-chat-composer textarea{resize:vertical;width:100%;min-height:80px;max-height:170px;font:inherit;background:var(--at-bg);color:var(--at-text);border:1px solid var(--at-line);box-sizing:border-box;border-radius:10px;padding:12px;font-size:15px}.alltier-chat-composer>div{justify-content:space-between;align-items:center;gap:12px;margin-top:10px;display:flex}.alltier-chat-composer small{color:var(--at-muted);font-size:11px}.alltier-chat-composer button{background:var(--at-primary);color:var(--at-primary-text)}.alltier-chat-error{overflow-wrap:anywhere;border-top:1px solid #a65765;padding:12px 18px;font-size:13px;color:var(--at-text)!important}.alltier-chat-page .alltier-header nav{gap:18px}.alltier-chat-page .alltier-header button{margin-left:auto}@media (max-width:800px){.alltier-chat-layout{grid-template-columns:1fr;gap:20px;padding:18px}.alltier-conversation{height:650px;min-height:450px;max-height:90dvh;position:static}.alltier-chat-controls{max-width:700px}.alltier-chat-page .alltier-header nav{flex-wrap:wrap}.alltier-chat-page .alltier-wordmark{margin-left:0}.alltier-chat-page .alltier-header a{align-items:center;min-height:40px;font-size:13px;display:flex}.alltier-chat-transcript{padding:16px}.alltier-chat-composer{padding:14px}.alltier-chat-composer>div{flex-wrap:wrap}.alltier-chat-controls h1{font-size:28px}}