:root{--tg-bg: #ffffff;--tg-bg-2: #f4f4f5;--tg-text: #1a1a1a;--tg-hint: #707579;--tg-link: #2481cc;--tg-btn: #2481cc;--tg-btn-text: #ffffff}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--tg-bg);color:var(--tg-text);font-size:15px}.loader,.empty{text-align:center;padding:40px 20px;color:var(--tg-hint)}.screen{padding:20px}.screen h1{margin:0 0 12px;font-size:20px}.screen .error{color:#d14242;font-weight:600}.screen .hint{color:var(--tg-hint);font-size:14px}.screen ul{padding-left:20px}code{background:var(--tg-bg-2);padding:2px 6px;border-radius:4px;font-family:ui-monospace,monospace}.chat-view{display:flex;flex-direction:column;height:100vh;height:100dvh}.chat-header{padding:10px 14px;background:var(--tg-bg-2);border-bottom:1px solid color-mix(in srgb,var(--tg-text) 8%,transparent)}.chat-title{font-weight:700;font-size:14px}.chat-subtitle{font-size:12px;color:var(--tg-hint)}.chat-messages{flex:1;overflow-y:auto;padding:12px 10px;display:flex;flex-direction:column;gap:6px}.msg-row{display:flex;flex-direction:column;max-width:80%}.msg-mine{align-self:flex-end;align-items:flex-end}.msg-other{align-self:flex-start;align-items:flex-start}.msg-label{font-size:11px;color:var(--tg-hint);margin:2px 8px}.msg-bubble{padding:8px 12px;border-radius:14px;background:var(--tg-bg-2);white-space:pre-wrap;word-wrap:break-word}.msg-mine .msg-bubble{background:var(--tg-btn);color:var(--tg-btn-text)}.msg-time{font-size:10px;color:var(--tg-hint);margin:2px 8px}.msg-attach a{color:var(--tg-link);text-decoration:none;font-size:12px}.msg-system .msg-bubble{background:transparent;font-style:italic;color:var(--tg-hint);font-size:12px;text-align:center;align-self:center}.chat-input{display:flex;gap:8px;padding:8px 10px;background:var(--tg-bg-2);border-top:1px solid color-mix(in srgb,var(--tg-text) 8%,transparent)}.chat-input textarea{flex:1;resize:none;border:1px solid color-mix(in srgb,var(--tg-text) 14%,transparent);border-radius:18px;padding:8px 14px;font-family:inherit;font-size:15px;background:var(--tg-bg);color:var(--tg-text);outline:none;max-height:120px}.chat-input button{background:var(--tg-btn);color:var(--tg-btn-text);border:none;border-radius:18px;padding:0 18px;font-weight:600;cursor:pointer;font-family:inherit}.chat-input button:disabled{opacity:.5;cursor:not-allowed}