:root{--navy: #0b1f3a;--navy-2: #12305a;--accent: #2f7be6;--bg: #e9edf2;--panel: #ffffff;--bubble-me: #d6e8ff;--bubble-them: #ffffff;--text: #0e1726;--muted: #6b7a90;--line: #dde3ec;--sent: #93a4bb;--read: #2f7be6;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg);-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}input,textarea{font:inherit}.login{min-height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(160deg,var(--navy),var(--navy-2));padding:24px calc(24px + env(safe-area-inset-right)) calc(24px + var(--safe-bottom)) calc(24px + env(safe-area-inset-left))}.login-card{width:100%;max-width:380px;background:var(--panel);border-radius:18px;padding:28px 24px;box-shadow:0 20px 60px #00000059}.brand{text-align:center;margin-bottom:18px}.brand img{width:96px;height:96px;object-fit:contain}.brand h1{margin:8px 0 2px;font-size:22px;color:var(--navy)}.brand p{margin:0;color:var(--muted);font-size:13px}.field{display:block;width:100%;padding:13px 14px;margin:8px 0;border:1px solid var(--line);border-radius:11px;outline:none}.field:focus{border-color:var(--accent)}.btn{width:100%;padding:13px;border:0;border-radius:11px;background:var(--accent);color:#fff;font-weight:600}.btn:disabled{opacity:.5}.btn-ghost{background:transparent;color:var(--accent);width:auto;padding:8px}.err{color:#c62828;font-size:13px;margin:6px 2px 0;min-height:16px}.hint{color:var(--muted);font-size:12px;margin:8px 2px 0}.dev-code{background:#fff7d6;border:1px dashed #e0c200;padding:8px 10px;border-radius:8px;font-size:13px;margin:10px 0}.app{display:grid;grid-template-columns:360px 1fr;height:100%}.sidebar{background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0}.chat{display:flex;flex-direction:column;min-height:0;background:#eef1f6}.sb-head,.chat-head{display:flex;align-items:center;gap:10px;padding:calc(12px + var(--safe-top)) 14px 12px;background:var(--navy);color:#fff}.sb-head .me{flex:1;min-width:0}.sb-head .me b{display:block;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sb-head .me span{font-size:12px;color:#b9c6dc}.icon-btn{background:#ffffff1f;border:0;color:#fff;width:38px;height:38px;border-radius:50%;display:grid;place-items:center;font-size:18px}.sb-search{padding:10px;border-bottom:1px solid var(--line)}.sb-list{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch}.row{display:flex;align-items:center;gap:12px;padding:11px 14px;border-bottom:1px solid #f0f3f8}.row:hover{background:#f6f8fb}.row.active{background:#e8f1ff}.avatar{width:46px;height:46px;border-radius:50%;flex:none;background:var(--navy-2);color:#fff;display:grid;place-items:center;font-weight:600;position:relative}.avatar .dot{position:absolute;right:-1px;bottom:-1px;width:12px;height:12px;border-radius:50%;background:#36c25b;border:2px solid #fff}.row .meta{flex:1;min-width:0}.row .meta .top{display:flex;justify-content:space-between;gap:8px}.row .meta .name{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.row .meta .time{color:var(--muted);font-size:11px;flex:none}.row .meta .preview{color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.badge{background:var(--accent);color:#fff;font-size:11px;min-width:20px;height:20px;padding:0 6px;border-radius:10px;display:grid;place-items:center}.chat-head .back{display:none}.chat-head .who{flex:1;min-width:0}.chat-head .who b{display:block;font-size:15px}.chat-head .who span{font-size:12px;color:#b9c6dc}.messages{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:14px;display:flex;flex-direction:column;gap:4px}.empty{margin:auto;color:var(--muted);text-align:center;padding:30px}.bubble{max-width:78%;padding:7px 10px 5px;border-radius:12px;background:var(--bubble-them);box-shadow:0 1px 1px #0000000f;position:relative;word-wrap:break-word}.bubble.me{align-self:flex-end;background:var(--bubble-me)}.bubble .txt{white-space:pre-wrap;line-height:1.35}.bubble .b-meta{display:flex;gap:5px;align-items:center;justify-content:flex-end;font-size:10.5px;color:var(--muted);margin-top:2px}.tick{font-size:12px;color:var(--sent)}.tick.read{color:var(--read)}.bubble img.photo{max-width:240px;max-height:280px;border-radius:9px;display:block;cursor:pointer}.bubble audio{width:230px;max-width:60vw}.file-card{display:flex;align-items:center;gap:10px;min-width:180px}.file-card .fi{width:38px;height:38px;border-radius:8px;background:var(--navy-2);color:#fff;display:grid;place-items:center;font-size:18px;flex:none}.file-card a{color:var(--accent);text-decoration:none;font-weight:600}.file-card small{color:var(--muted);display:block}.typing{color:var(--muted);font-size:12px;padding:0 16px 6px;height:16px}.composer{display:flex;align-items:flex-end;gap:8px;padding:10px 10px calc(10px + var(--safe-bottom));background:var(--panel);border-top:1px solid var(--line)}.composer textarea{flex:1;resize:none;max-height:120px;padding:11px 13px;border:1px solid var(--line);border-radius:20px;outline:none;line-height:1.3}.composer textarea:focus{border-color:var(--accent)}.c-btn{width:44px;height:44px;border-radius:50%;border:0;flex:none;display:grid;place-items:center;background:var(--accent);color:#fff;font-size:19px}.c-btn.ghost{background:#eef1f6;color:var(--navy)}.c-btn.rec{background:#e53935;animation:pulse 1s infinite}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.08)}}.rec-bar{flex:1;display:flex;align-items:center;gap:10px;color:#e53935;font-weight:600;padding-left:8px}.modal{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000e6;display:grid;place-items:center;z-index:50}.modal img{max-width:96vw;max-height:92vh}.sheet{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:flex-end;justify-content:center;z-index:40}.sheet-card{width:100%;max-width:460px;background:#fff;border-radius:16px 16px 0 0;padding:18px 16px calc(18px + var(--safe-bottom))}.sheet-card h3{margin:4px 0 12px}@media (max-width: 820px){.app{grid-template-columns:1fr}.app.show-chat .sidebar{display:none}.app:not(.show-chat) .chat{display:none}.chat-head .back{display:grid}.bubble{max-width:85%}.sheet-card{border-radius:16px;margin-bottom:0}}.call-btns{display:flex;gap:4px;margin-left:auto}.call-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;background:#081222ed;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff}.call-card{text-align:center;padding:28px;max-width:340px}.call-card h2{margin:14px 0 4px;color:#fff}.call-card p{color:#b9c6d8;margin:0}.call-avatar{display:flex;align-items:center;justify-content:center;border-radius:50%;background:var(--accent);color:#fff;font-weight:700}.call-avatar.big{width:96px;height:96px;font-size:32px;margin:0 auto}.call-actions{display:flex;gap:18px;justify-content:center;margin-top:26px}.call-btn{border:0;border-radius:30px;padding:14px 26px;font-size:15px;font-weight:600;color:#fff;cursor:pointer}.call-btn.accept{background:#22c55e}.call-btn.decline{background:#ef4444}.call-overlay.active{background:#0b1424;justify-content:flex-end}.call-stage{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center}.call-stage.video .remote-video{width:100%;height:100%;object-fit:contain;background:#000}.call-stage.video .local-video{position:absolute;right:14px;top:calc(14px + var(--safe-top));width:108px;height:150px;object-fit:cover;border-radius:12px;border:2px solid rgba(255,255,255,.5);background:#000}.audio-call{text-align:center;color:#fff}.audio-call h2{margin:14px 0 4px}.audio-call p{color:#b9c6d8}.call-controls{position:relative;z-index:2;display:flex;gap:18px;justify-content:center;padding:22px 0 calc(26px + var(--safe-bottom))}.ctl{width:58px;height:58px;border-radius:50%;border:0;font-size:22px;cursor:pointer;background:#ffffff2e;color:#fff}.ctl.on{background:#ffffff6b}.ctl.hang{background:#ef4444;transform:rotate(135deg)}.call-overlay.conference{background:#000;padding:0}.conf-frame{position:absolute;top:0;right:0;bottom:0;left:0}.conf-frame iframe{width:100%;height:100%;border:0}.call-overlay.conference .call-controls{position:absolute;top:calc(8px + var(--safe-top));right:10px;padding:0;z-index:5}.bubble.call{align-self:center;background:#12305a14;color:var(--muted);border-radius:14px}.bubble.call .txt{font-size:13px}.row .pick{margin-left:auto;color:var(--accent);font-weight:700;font-size:18px}.transcript{margin-top:6px;font-size:12.5px;color:var(--muted);font-style:italic;line-height:1.35}.tx-toggle{margin-top:4px;font-size:11px;color:var(--accent);cursor:pointer;opacity:.85}.tx-toggle:hover{opacity:1}.btn.ghost{background:#fff;color:var(--navy-2);border:1px solid var(--line)}.icon-btn.on{background:#2f7be62e}.caption-bar{position:absolute;left:50%;transform:translate(-50%);bottom:110px;z-index:3;max-width:84%;text-align:center;background:#0000009e;color:#fff;padding:8px 14px;border-radius:12px;font-size:16px;line-height:1.35;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}