:root{--bg: #f5f5f5;--fg: #111;--line: #ccc;--accent: #28a745;--mine: #dcf8c6;--theirs: #ffffff;--muted: #777}*{box-sizing:border-box}html,body{margin:0;height:100%;font-family:-apple-system,system-ui,sans-serif;background:#2b2b2b;color:var(--fg)}#root{height:100%;display:flex;justify-content:center}.shell{width:100%;max-width:460px;height:100dvh;background:var(--bg);display:flex;flex-direction:column;position:relative;overflow:hidden}.topbar{display:flex;align-items:center;gap:10px;padding:10px 12px;border-bottom:1px solid var(--line);background:#fff;min-height:52px}.topbar .title{font-weight:600;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.topbar .sub{font-size:12px;color:var(--muted);font-weight:400}.iconbtn{border:0;background:transparent;font-size:20px;padding:8px;cursor:pointer;min-width:40px;min-height:40px}.avatar{width:36px;height:36px;border-radius:50%;object-fit:cover;background:#ddd;flex:none}.body{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch}.centerform{display:flex;flex-direction:column;gap:12px;padding:32px 24px}input,textarea,button{font-family:inherit;font-size:16px}.field{padding:12px;border:1px solid var(--line);border-radius:4px}.primary{background:var(--accent);color:#fff;border:0;padding:12px;border-radius:4px;cursor:pointer}.err{color:#dc3545;font-size:14px}.chatrow{display:flex;align-items:center;gap:12px;padding:10px 12px;border-bottom:1px solid #eee;cursor:pointer}.chatrow .meta{flex:1;min-width:0}.chatrow .name{font-weight:600}.chatrow .preview{color:var(--muted);font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chatrow .right{display:flex;flex-direction:column;align-items:flex-end;gap:4px}.badge{background:var(--accent);color:#fff;border-radius:10px;font-size:12px;min-width:20px;text-align:center;padding:1px 6px}.time{color:var(--muted);font-size:11px}.messages{display:flex;flex-direction:column;gap:6px;padding:12px}.bubble{max-width:78%;padding:6px 9px;border-radius:10px;display:flex;flex-wrap:wrap;align-items:flex-end;column-gap:8px;row-gap:2px;word-break:break-word}.bubble.mine{align-self:flex-end;background:var(--mine);border:1px solid var(--line)}.bubble.theirs{align-self:flex-start;background:var(--theirs);border:1px solid var(--line)}.bubble .text{min-width:0;overflow-wrap:anywhere;white-space:pre-wrap}.bubble .stamp{margin-left:auto;font-size:10px;color:var(--muted);white-space:nowrap}.composer{display:flex;align-items:flex-end;gap:6px;padding:8px;border-top:1px solid var(--line);background:#fff}.composer textarea{flex:1;resize:none;max-height:120px;padding:9px;border:1px solid var(--line);border-radius:18px}.avatar.monogram{display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;border-radius:50%}.bubble .sender{display:block;width:100%;font-size:12px;font-weight:600;color:var(--accent);margin-bottom:2px}.msg-image{max-width:240px;max-height:280px;border-radius:8px;cursor:pointer;display:block}.msg-file{display:flex;align-items:center;gap:8px;text-decoration:none;color:inherit}.msg-file .fileicon{font-size:22px}.msg-file .filename{display:block;max-width:180px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.msg-file .filesize{display:block;font-size:11px;color:var(--muted)}.viewer{position:absolute;inset:0;background:#000000e6;display:flex;align-items:center;justify-content:center;z-index:50}.viewer img{max-width:100%;max-height:100%}.emoji-panel{display:grid;grid-template-columns:repeat(8,1fr);gap:2px;padding:6px;max-height:180px;overflow-y:auto;border-top:1px solid var(--line);background:#fff}.emoji-panel .emoji{border:0;background:transparent;font-size:22px;padding:6px 0;cursor:pointer}.calloverlay{position:absolute;inset:0;z-index:60;background:var(--bg);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:32px;text-align:center}.calloverlay .avatar{width:96px;height:96px;font-size:36px}.calloverlay .callname{font-size:22px;font-weight:600}.calloverlay .callstatus{color:var(--muted);font-size:15px}.calloverlay .callbtns{display:flex;gap:16px;margin-top:24px}.callbtn{border:0;border-radius:24px;padding:12px 22px;font-size:16px;cursor:pointer;background:#e6e6e6;color:var(--fg);min-width:100px}.callbtn.accept{background:var(--accent);color:#fff}.callbtn.decline{background:#dc3545;color:#fff}.callmsg{align-self:center;color:var(--muted);font-size:12px;padding:2px 8px}.calltoast{position:absolute;bottom:24px;left:50%;transform:translate(-50%);background:#000000d1;color:#fff;padding:8px 14px;border-radius:16px;font-size:14px;z-index:70}.calloverlay .callback{position:absolute;top:10px;left:6px}button.callresume{border:0;cursor:pointer;font:inherit;font-size:14px;background:var(--accent);white-space:nowrap}.callbar{display:flex;align-items:center;gap:8px;padding:7px 10px;background:var(--accent);color:#fff;cursor:pointer;flex:none}.callbar .cb-name{font-weight:600;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.callbar .cb-time{margin-left:auto;font-size:13px;opacity:.92;font-variant-numeric:tabular-nums;flex:none}.callbar .cb-hang{border:0;border-radius:14px;background:#dc3545;color:#fff;padding:5px 12px;font-size:13px;cursor:pointer;flex:none}.topbar .menuwrap{flex:1;min-width:0;position:relative}.titlebtn{display:inline-flex;align-items:center;gap:5px;max-width:100%;min-width:0;border:0;background:transparent;font:inherit;padding:4px 0;cursor:pointer;color:var(--fg)}.titlebtn .menuname{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}.titlebtn .caret{font-size:11px;color:var(--muted);flex:none}.menu-backdrop{position:fixed;inset:0;z-index:40}.menu{position:absolute;top:100%;left:0;margin-top:4px;min-width:168px;background:#fff;border:1px solid var(--line);border-radius:6px;box-shadow:0 4px 14px #00000024;z-index:41;overflow:hidden}.menuitem{display:block;width:100%;text-align:left;border:0;background:transparent;padding:11px 14px;font-size:15px;color:var(--fg);cursor:pointer}.menuitem:hover{background:#f0f0f0}