:root{--bg: #d9dbd4;--panel: #ffffff;--bar: #f0f2f5;--accent: #008069;--accent-dark: #017561;--own: #d9fdd3;--text: #111b21;--muted: #667781;--border: #e9edef;--mark-bg: #fdecc8;--mark-fg: #6b4600;--mark-border: #f0d493;--fail: #b3261e;--radius: 8px}*{box-sizing:border-box}html,body,#app{height:100%;margin:0}body{background:var(--bg);color:var(--text);font:15px/1.45 -apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif}button{font:inherit;color:inherit;cursor:pointer}.app{display:flex;flex-direction:column;height:100%;max-width:1500px;margin:0 auto;background:var(--panel)}.bar{flex:0 0 auto;background:var(--bar);border-bottom:1px solid var(--border)}.bar-row{display:flex;align-items:center;gap:12px;padding:8px 14px}.brand{font-weight:600;color:var(--accent-dark);white-space:nowrap}.search{display:flex;align-items:center;gap:6px;flex:1 1 auto;min-width:120px;background:var(--panel);border:1px solid var(--border);border-radius:20px;padding:4px 10px}.search input{flex:1 1 auto;min-width:60px;border:0;outline:none;font:inherit;background:transparent}.flat{background:transparent;border:0;border-radius:var(--radius);padding:6px 10px;color:var(--accent-dark);white-space:nowrap}.flat:hover{background:#0080691a}.mark{display:flex;flex-wrap:wrap;gap:4px 10px;padding:6px 14px;background:var(--mark-bg);color:var(--mark-fg);border-top:1px solid var(--mark-border);font-size:13px}.mark-detail{opacity:.75}.layout{flex:1 1 auto;display:grid;grid-template-columns:minmax(260px,30%) 1fr;min-height:0}.column{min-height:0;display:flex;flex-direction:column;border-right:1px solid var(--border);background:var(--panel)}.feed-column{border-right:0;background:var(--bg)}.back{display:none}@media(max-width:860px){.layout{grid-template-columns:1fr}.layout.has-chat .column:not(.feed-column){display:none}.layout:not(.has-chat) .feed-column{display:none}.back{display:inline-flex}}.chat-list{overflow-y:auto;flex:1 1 auto}.chat-row{display:flex;gap:10px;align-items:center;width:100%;text-align:left;padding:10px 14px;border:0;border-bottom:1px solid var(--border);background:transparent}.chat-row:hover{background:#f5f6f6}.chat-row.current{background:#f0f2f5}.chat-row-main{flex:1 1 auto;min-width:0}.chat-name{display:block;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-preview{display:block;color:var(--muted);font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-side{flex:0 0 auto;display:flex;flex-direction:column;align-items:flex-end;gap:4px;font-size:12px;color:var(--muted)}.badge{min-width:20px;padding:0 6px;border-radius:10px;background:var(--accent);color:#fff;font-size:12px;line-height:20px;text-align:center}.hint{padding:16px 14px;color:var(--muted);font-size:14px}.chat-head{flex:0 0 auto;display:flex;align-items:center;gap:10px;padding:8px 14px;background:var(--bar);border-bottom:1px solid var(--border)}.chat-head-name{font-weight:600}.messages{flex:1 1 auto;overflow-y:auto;padding:12px 16px 4px;display:flex;flex-direction:column;gap:4px}.day{align-self:center;margin:10px 0 6px;padding:3px 10px;border-radius:12px;background:#fffc;color:var(--muted);font-size:12px}.bubble{max-width:min(72ch,80%);align-self:flex-start;background:var(--panel);border-radius:var(--radius);padding:6px 9px;box-shadow:0 1px .5px #0b141a21}.bubble.mine{align-self:flex-end;background:var(--own)}.bubble.found{outline:2px solid var(--accent)}.sender{font-size:13px;font-weight:600;color:var(--accent-dark)}.text{white-space:pre-wrap;overflow-wrap:anywhere}.meta{display:flex;justify-content:flex-end;align-items:center;gap:6px;margin-top:2px;font-size:11px;color:var(--muted)}.meta.failed{color:var(--fail)}.bubble-actions{display:flex;gap:6px;margin-top:4px}.bubble-actions button{border:1px solid var(--border);background:var(--panel);border-radius:var(--radius);padding:3px 8px;font-size:13px}.failure{margin-top:3px;color:var(--fail);font-size:12px}.media{margin:2px 0 4px}.media img{display:block;max-width:100%;max-height:320px;border-radius:6px;cursor:zoom-in}.media-missing{border:1px dashed var(--mark-border);background:var(--mark-bg);color:var(--mark-fg);border-radius:6px;padding:6px 8px;font-size:13px}.to-new{position:sticky;bottom:8px;align-self:center;border:0;border-radius:16px;background:var(--accent);color:#fff;padding:6px 14px;box-shadow:0 1px 3px #0b141a4d}.older{align-self:center;margin-bottom:6px;border:1px solid var(--border);background:var(--panel);border-radius:14px;padding:4px 12px;font-size:13px}.composer{flex:0 0 auto;background:var(--bar);border-top:1px solid var(--border);padding:8px 14px}.composer-row{display:flex;gap:10px;align-items:flex-end}.composer textarea{flex:1 1 auto;resize:none;min-height:40px;max-height:160px;border:1px solid var(--border);border-radius:18px;padding:9px 14px;font:inherit;outline:none;background:var(--panel)}.composer textarea:disabled{background:#eceff1;color:var(--muted)}.send{flex:0 0 auto;border:0;border-radius:18px;background:var(--accent);color:#fff;padding:10px 18px}.send:disabled{background:#b9c2c0;cursor:not-allowed}.composer-block{margin-bottom:6px;color:var(--mark-fg);background:var(--mark-bg);border:1px solid var(--mark-border);border-radius:var(--radius);padding:5px 9px;font-size:13px}.page{flex:1 1 auto;overflow-y:auto;padding:24px 18px 40px;background:var(--panel)}.page-inner{max-width:720px;margin:0 auto}.page h1{font-size:22px;margin:0 0 12px}.page h2{font-size:17px;margin:24px 0 8px}.page p{color:#3b4a54}.oauth-id{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:12px 0}.oauth-id code{flex:1 1 auto;min-width:220px;font-size:20px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--bar);border:1px solid var(--border);border-radius:var(--radius);padding:10px 12px;overflow-wrap:anywhere}.primary{border:0;border-radius:var(--radius);background:var(--accent);color:#fff;padding:10px 16px}.secondary{border:1px solid var(--border);border-radius:var(--radius);background:var(--panel);padding:8px 14px}.session{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;border:1px solid var(--border);border-radius:var(--radius);padding:10px 12px;margin-bottom:8px}.session-main{flex:1 1 220px;min-width:0}.session-sub{color:var(--muted);font-size:13px}.self-tag{margin-left:6px;padding:1px 7px;border-radius:10px;background:var(--accent);color:#fff;font-size:12px}.note{border-left:3px solid var(--accent);background:#f6fbf9;padding:10px 12px;border-radius:0 var(--radius) var(--radius) 0}.viewer{position:fixed;top:0;right:0;bottom:0;left:0;background:#0b141aeb;display:flex;flex-direction:column;z-index:10}.viewer-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 14px;color:#fff}.viewer-bar button{background:transparent;border:1px solid #ffffff55;border-radius:var(--radius);color:#fff;padding:6px 12px}.viewer-body{flex:1 1 auto;display:flex;align-items:center;justify-content:center;padding:0 14px 18px;min-height:0}.viewer-body img{max-width:100%;max-height:100%;object-fit:contain}.viewer-body p{color:#fff}