:root{--bg: #ffffff;--bg-elev: #ffffff;--bg-elev2: #f4f4f4;--surface: #f4f4f4;--border: #e6e6e9;--text: #191c1f;--text-dim: #8d969e;--text-mid: #505a63;--accent: #191c1f;--accent-contrast: #ffffff;--online: #00a87e;--brand-blue: #494fdf;--warning: #ec7e00;--danger: #e23b4a;--bubble-out: #191c1f;--bubble-in: #f4f4f4;--call-bg: #191c1f;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px);--safe-left: env(safe-area-inset-left, 0px);--safe-right: env(safe-area-inset-right, 0px)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}@supports (height: 100dvh){.app{height:100dvh}}body{background:var(--bg);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;letter-spacing:.16px;overscroll-behavior:none;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}button{font:inherit;cursor:pointer}input{font:inherit}svg{display:block;flex-shrink:0}button,.tap{min-height:44px}.app{height:100%;display:flex;flex-direction:column;overflow-x:hidden}.auth{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:calc(24px + var(--safe-top)) 24px calc(24px + var(--safe-bottom));text-align:center;gap:18px;background:var(--bg)}.auth h1{font-size:44px;font-weight:500;line-height:1.05;letter-spacing:-1.2px;margin:4px 0 0}.auth p{color:var(--text-mid);max-width:36ch;margin:0;line-height:1.56;letter-spacing:.09px}.auth form{display:flex;flex-direction:column;gap:12px;width:100%;max-width:360px;margin-top:4px}.field{width:100%;min-width:0;padding:14px 18px;background:var(--surface);border:1.5px solid transparent;border-radius:14px;color:var(--text);letter-spacing:.16px;outline:none;transition:border-color .15s,background .15s}.field::placeholder{color:var(--text-dim)}.field:focus{background:#fff;border-color:var(--accent)}.btn-primary{background:var(--accent);color:var(--accent-contrast);border:none;border-radius:9999px;padding:14px 32px;font-weight:600;letter-spacing:.16px;transition:opacity .15s}.btn-primary:hover{opacity:.85}.btn-primary:focus-visible{outline:none;box-shadow:0 0 0 .125rem #191c1f59}.btn-primary:disabled{opacity:.4;cursor:default}.error{color:var(--danger);font-size:14px;letter-spacing:.16px}.layout{flex:1;display:grid;grid-template-columns:340px 1fr;min-height:0}.sidebar{border-right:1px solid var(--border);display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--bg);padding-top:var(--safe-top);padding-left:var(--safe-left)}.sidebar-header{padding:18px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:8px}.me{display:flex;flex-direction:column;min-width:0}.header-actions{display:flex;align-items:center;gap:6px;flex-shrink:0}.me .name{font-weight:600;font-size:18px;letter-spacing:-.2px}.me .status{font-size:13px;color:var(--text-dim);letter-spacing:.16px}.dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:6px;background:var(--text-dim)}.dot.online{background:var(--online)}.contact-list{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:8px}.contact{width:100%;text-align:left;background:none;border:none;color:var(--text);padding:12px 14px;display:flex;align-items:center;gap:14px;border-radius:16px;transition:background .12s}.contact:hover,.contact.active{background:var(--surface)}.avatar{width:44px;height:44px;border-radius:50%;background:var(--surface);display:grid;place-items:center;font-weight:600;color:var(--accent);flex-shrink:0}.contact.active .avatar{background:var(--accent);color:var(--accent-contrast)}.contact .meta{min-width:0;flex:1}.contact .meta .row1{display:flex;justify-content:space-between;gap:8px}.contact .uname{font-weight:600;letter-spacing:-.1px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.contact .uname{flex:1}.verified-badge{color:var(--online);font-size:12px;font-weight:600;display:inline-flex;align-items:center;gap:3px;flex-shrink:0}.unread-badge{flex-shrink:0;min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:var(--accent, #2f7cf6);color:#fff;font-size:11px;font-weight:700;line-height:18px;text-align:center}.contact .preview{margin-top:2px;font-size:12px;color:var(--text-dim);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.add-row{display:flex;gap:8px;padding:14px 16px calc(14px + var(--safe-bottom));border-top:1px solid var(--border)}.add-row .field{flex:1}.icon-btn{background:var(--surface);border:none;color:var(--text);border-radius:9999px;width:44px;min-width:44px;height:44px;display:grid;place-items:center;font-size:18px;transition:opacity .15s,background .12s}.icon-btn:hover{opacity:.85}.persist-btn.pending{background:#ec7e0024;color:var(--warning)}.persist-btn.on{background:#00a87e24;color:var(--online)}.chat{display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--bg)}.chat-header{display:flex;align-items:center;gap:14px;padding:14px 20px;padding-top:calc(14px + var(--safe-top));padding-right:calc(20px + var(--safe-right));border-bottom:1px solid var(--border);background:var(--bg)}.chat-header .title{flex:1;min-width:0}.chat-header .title .uname{font-weight:600;font-size:17px;letter-spacing:-.2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-header .title .sub{font-size:12px;color:var(--text-dim);letter-spacing:.16px;display:flex;align-items:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.back-btn{display:none;background:none;border:none;color:var(--text);font-size:26px;width:36px}.call-btns{display:flex;gap:8px}.messages{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:20px;display:flex;flex-direction:column}.bubble{max-width:min(78%,560px);padding:11px 16px;border-radius:22px;line-height:1.5;letter-spacing:.16px;word-wrap:break-word;display:flex;flex-direction:column;gap:6px;cursor:pointer;margin-top:14px}.bubble.grouped{margin-top:3px}.bubble:first-child{margin-top:0}.bubble.out.grouped{border-top-right-radius:8px}.bubble.in.grouped{border-top-left-radius:8px}.bubble-text{white-space:pre-wrap;word-break:break-word}.attach-image{display:block;border-radius:12px;overflow:hidden;max-width:260px}.attach-image img{display:block;width:100%;max-height:320px;object-fit:cover}.attach-file{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:12px;text-decoration:none;color:inherit;min-width:200px;max-width:280px}.bubble.in .attach-file{background:#0000000d}.bubble.out .attach-file{background:#ffffff1f}.attach-file-icon{flex-shrink:0;opacity:.85}.attach-file-meta{display:flex;flex-direction:column;min-width:0;flex:1}.attach-file-name{font-weight:600;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.attach-file-size{font-size:12px;opacity:.7}.attach-file-dl{flex-shrink:0;opacity:.7}.bubble.in{align-self:flex-start;background:var(--bubble-in);color:var(--text)}.bubble.out{align-self:flex-end;background:var(--bubble-out);color:#fff}.bubble .time{display:block;font-size:11px;margin-top:4px;letter-spacing:.16px}.bubble.in .time{color:var(--text-dim)}.bubble.out .time{color:#fff9}.msg-status{font-variant:small-caps}.msg-status.failed{color:var(--danger, #ff5c5c);font-weight:600}.composer{display:flex;align-items:flex-end;gap:10px;padding:14px 20px;padding-bottom:calc(14px + var(--safe-bottom));padding-right:calc(20px + var(--safe-right));border-top:1px solid var(--border);background:var(--bg)}.composer .field{flex:1}.composer-input{font:inherit;line-height:1.4;resize:none;overflow-y:hidden;max-height:140px;min-height:0}.send-btn{width:48px;min-width:48px;height:48px;border-radius:50%;border:none;background:var(--accent);color:var(--accent-contrast);display:grid;place-items:center;flex-shrink:0;transition:opacity .15s}.send-btn:hover{opacity:.85}.send-btn:focus-visible{outline:none;box-shadow:0 0 0 .125rem #191c1f59}.send-btn:disabled{opacity:.4;cursor:default}.empty{flex:1;display:grid;place-items:center;color:var(--text-dim);padding:24px;text-align:center;letter-spacing:.16px;line-height:1.56}.call-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--call-bg);color:#fff;z-index:50;display:flex;flex-direction:column;padding-top:var(--safe-top);padding-bottom:var(--safe-bottom)}.call-video-area{flex:1;position:relative;min-height:0;background:#000}.remote-video{width:100%;height:100%;object-fit:cover;background:#000}.local-video{position:absolute;right:16px;bottom:16px;width:110px;height:150px;object-fit:cover;border-radius:16px;border:2px solid rgba(255,255,255,.4);background:#111}.call-audio{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px}.call-audio .big-avatar{width:120px;height:120px;border-radius:50%;background:#f4f4f41a;border:2px solid rgba(244,244,244,.2);display:grid;place-items:center;font-size:48px;font-weight:500;color:#fff}.call-status{color:#ffffffb3;letter-spacing:.16px}.call-controls{display:flex;justify-content:center;gap:20px;padding:28px}.call-btn{width:64px;height:64px;border-radius:50%;border:none;display:grid;place-items:center;font-size:22px;background:#f4f4f41a;color:#f4f4f4;transition:opacity .15s}.call-btn:hover{opacity:.85}.call-btn.end{background:var(--danger);color:#fff}.call-btn.accept{background:var(--online);color:#04201a}.call-btn.active{background:#f4f4f4;color:var(--accent)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#191c1f80;display:grid;place-items:center;z-index:40;padding:16px}.modal{background:#fff;border:1px solid var(--border);border-radius:24px;padding:28px;width:100%;max-width:420px;display:flex;flex-direction:column;gap:14px}.modal h3{margin:0;font-size:24px;font-weight:500;letter-spacing:-.4px}.fingerprint{font-family:ui-monospace,SF Mono,Menlo,monospace;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:14px;letter-spacing:1px;font-size:15px;word-break:break-all;color:var(--text)}.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:4px}.btn-ghost{background:transparent;border:2px solid var(--accent);color:var(--accent);border-radius:9999px;padding:12px 28px;font-weight:600;letter-spacing:.16px;transition:opacity .15s}.btn-ghost:hover{opacity:.7}.settings-label{display:block;font-size:12px;color:var(--text-dim);margin-bottom:6px;letter-spacing:.16px}.modal code{font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:.9em;background:var(--surface);padding:1px 5px;border-radius:6px}.settings-test-row{display:flex;align-items:center;gap:12px}.settings-test-row .btn-ghost{padding:10px 20px}.settings-test-ok{color:var(--online);font-size:14px;font-weight:600}.settings-test-row .icon-btn{margin-left:auto}.settings-hint{font-size:13px;color:var(--text-mid);letter-spacing:.16px}.auth-server-link{background:none;border:none;color:var(--text-mid);font-size:13px;font-weight:600;letter-spacing:.16px;text-decoration:underline;text-underline-offset:3px;padding:6px 8px;min-height:0}.auth-server-link:hover{color:var(--text)}@media (max-width: 768px){.layout{grid-template-columns:1fr}.layout[data-view=list] .chat,.layout[data-view=chat] .sidebar{display:none}.sidebar{border-right:none}.back-btn{display:block;width:28px;margin-right:-2px}.chat-header{gap:8px;padding-left:12px;padding-right:calc(12px + var(--safe-right))}.chat-header .avatar{width:38px;height:38px}.call-btns{gap:2px}.call-btns .icon-btn{width:40px;min-width:40px;height:40px}.bubble{max-width:85%}.field{font-size:16px}.local-video{width:90px;height:120px}}@media (prefers-reduced-motion: reduce){.field,.contact,.btn-primary,.btn-ghost,.icon-btn,.send-btn,.call-btn{transition:none}}