:root{--text:#1c2b33;--muted:#64777f;--muted2:#93a3aa;--bg:#f4f6f7;--chat-bg:#eceff1;--panel:#fff;--border:#dfe7ea;--accent:#2e5560;--accent-dark:#223f47;--accent-weak:#e3edf0;--bubble-mine:#d5e6dd;--bubble-other:#fff;--mention:#b45309;--mention-bg:#fef3c7;--badge:#d9534f;--danger:#d9534f;--ok:#2e9e5b;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;font:15px/1.6 system-ui,Hiragino Sans,Noto Sans JP,sans-serif}*{box-sizing:border-box}body{overscroll-behavior-y:none;margin:0}#root{flex-direction:column;height:100svh;display:flex}button{font:inherit}input,textarea{font:inherit;color:inherit}.boot{height:100svh;color:var(--muted);place-items:center;display:grid}.login-wrap{background:var(--bg);place-items:center;min-height:100svh;padding:20px;display:grid}.login-card{background:var(--panel);border:1px solid var(--border);border-radius:14px;flex-direction:column;gap:14px;width:100%;max-width:360px;padding:22px;display:flex}.login-brand{align-items:center;gap:12px;display:flex}.login-brand img{border-radius:10px}.login-brand h1{letter-spacing:.02em;margin:0;font-size:19px}.login-app-sub{color:var(--muted);font-size:12px}.login-sub{color:var(--muted);margin:0;font-size:13px}.login-card label{color:var(--muted);flex-direction:column;gap:5px;font-size:13px;display:flex}.login-card input{border:1px solid var(--border);background:#fff;border-radius:8px;padding:10px 12px;font-size:16px}.login-card input:focus{outline:2px solid var(--accent);outline-offset:-1px}.login-error{color:var(--danger);font-size:13px}.login-ok{color:var(--ok);font-size:13px}.login-link{color:var(--accent);cursor:pointer;background:0 0;border:none;padding:4px;font-size:13px}.login-note{color:var(--muted2);margin:0;font-size:12px}.btn{border:1px solid var(--border);background:var(--panel);color:var(--text);cursor:pointer;border-radius:9px;padding:10px 14px}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.primary:disabled{opacity:.6}.btn.ghost{background:0 0}.btn.danger{color:var(--danger);border-color:var(--danger)}.apphead{padding:10px 12px;padding-top:calc(10px + env(safe-area-inset-top));background:var(--panel);border-bottom:1px solid var(--border);z-index:5;flex:none;align-items:center;gap:8px;display:flex;position:relative}.apphead .title{white-space:nowrap;text-overflow:ellipsis;flex:1;min-width:0;font-size:16px;font-weight:600;overflow:hidden}.apphead .sub{color:var(--muted);font-size:12px;font-weight:400}.iconbtn{cursor:pointer;color:var(--accent);background:0 0;border:none;border-radius:8px;justify-content:center;align-items:center;min-width:36px;min-height:36px;padding:6px;font-size:22px;line-height:1;text-decoration:none;display:inline-flex}.iconbtn:active{background:var(--accent-weak)}.roomlist{background:var(--panel);flex:1;overflow-y:auto}.room-row{border:none;border-bottom:1px solid var(--border);cursor:pointer;text-align:left;background:0 0;align-items:center;gap:12px;width:100%;padding:12px 14px;display:flex}.room-row:active{background:var(--accent-weak)}.avatar{color:#fff;background:var(--accent);border-radius:50%;flex:0 0 46px;place-items:center;width:46px;height:46px;font-size:18px;font-weight:600;display:grid}.avatar.space{background:var(--accent-dark)}.avatar.sm{flex-basis:32px;width:32px;height:32px;font-size:13px}.room-main{flex:1;min-width:0}.room-name{font-size:15px;font-weight:600}.room-preview{color:var(--muted);white-space:nowrap;text-overflow:ellipsis;font-size:13px;overflow:hidden}.room-side{flex-direction:column;align-items:flex-end;gap:5px;display:flex}.room-time{color:var(--muted2);font-size:11px}.unread-badge{background:var(--badge);color:#fff;border-radius:999px;place-items:center;min-width:20px;height:20px;padding:0 6px;font-size:11px;font-weight:600;display:grid}.list-empty{text-align:center;color:var(--muted);padding:40px 20px;font-size:13px}.list-section{color:var(--muted2);background:var(--panel);padding:8px 14px 4px;font-size:12px}.chat-screen{background:var(--chat-bg);flex-direction:column;flex:1;min-height:0;display:flex}.msg-scroll{flex:1;padding:10px 10px 4px;overflow-y:auto}.load-more{margin:4px auto 12px;font-size:12px;display:block}.day-sep{place-items:center;margin:10px 0;display:grid}.day-sep span{color:var(--muted);background:#00000014;border-radius:999px;padding:2px 12px;font-size:11px}.msg-row{align-items:flex-end;gap:8px;margin:2px 0 10px;display:flex}.msg-row.mine{flex-direction:row-reverse}.msg-col{flex-direction:column;min-width:0;max-width:76%;display:flex}.msg-row.mine .msg-col{align-items:flex-end}.msg-sender{color:var(--muted);margin:0 0 2px 4px;font-size:11px}.msg-line{align-items:flex-end;gap:6px;display:flex}.msg-row.mine .msg-line{flex-direction:row-reverse}.msg-time{color:var(--muted2);flex:none;font-size:10px}.bubble{background:var(--bubble-other);word-break:break-word;white-space:pre-wrap;border-radius:14px;padding:8px 12px;font-size:15px;line-height:1.55;box-shadow:0 1px 1px #0000000a}.msg-row.mine .bubble{background:var(--bubble-mine)}.bubble a{color:var(--accent)}.mention{color:var(--mention);font-weight:600}.mention.me{background:var(--mention-bg);border-radius:4px;padding:0 2px}.att-img{cursor:pointer;background:#ddd;border-radius:12px;max-width:100%;max-height:280px;margin-top:6px;display:block}.att-file{background:var(--panel);border:1px solid var(--border);color:var(--accent);border-radius:10px;align-items:center;gap:8px;max-width:240px;margin-top:6px;padding:8px 10px;font-size:13px;text-decoration:none;display:flex}.att-file .name{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.att-file .size{color:var(--muted2);flex:none;font-size:11px}.msg-actions{flex-wrap:wrap;align-items:center;gap:6px;margin-top:4px;display:flex}.msg-row.mine .msg-actions{justify-content:flex-end}.react-chip{border:1px solid var(--border);background:var(--panel);cursor:pointer;color:var(--muted);border-radius:999px;padding:2px 8px;font-size:12px}.react-chip.on{border-color:var(--accent);background:var(--accent-weak);color:var(--accent-dark)}.react-add{border:1px dashed var(--border);cursor:pointer;color:var(--muted2);background:0 0;border-radius:999px;padding:2px 8px;font-size:12px}.thread-link{color:var(--accent);cursor:pointer;background:0 0;border:none;padding:2px 4px;font-size:12px;font-weight:600}.emoji-pop{z-index:30;background:var(--panel);border:1px solid var(--border);border-radius:12px;gap:2px;padding:6px;display:flex;position:absolute;box-shadow:0 4px 16px #0000001f}.emoji-pop button{cursor:pointer;background:0 0;border:none;border-radius:8px;padding:6px 8px;font-size:22px}.emoji-pop button:active{background:var(--accent-weak)}.thread-root{background:var(--panel);border-bottom:1px solid var(--border);padding:10px}.thread-count-sep{color:var(--muted);padding:8px 12px;font-size:12px}.composer{background:var(--panel);border-top:1px solid var(--border);padding:8px 10px;padding-bottom:calc(8px + env(safe-area-inset-bottom));flex:none;position:relative}.composer-row{align-items:flex-end;gap:6px;display:flex}.composer textarea{resize:none;border:1px solid var(--border);background:var(--bg);border-radius:18px;flex:1;min-width:0;max-height:120px;padding:9px 14px;font-size:16px;line-height:1.45}.composer textarea:focus{outline:2px solid var(--accent);outline-offset:-1px}.send-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:50%;flex:none;place-items:center;width:38px;height:38px;font-size:17px;display:grid}.send-btn:disabled{background:var(--muted2)}.file-previews{gap:8px;padding:4px 2px 8px;display:flex;overflow-x:auto}.file-preview{flex:none;position:relative}.file-preview img{object-fit:cover;border-radius:10px;width:64px;height:64px;display:block}.file-preview .doc{background:var(--accent-weak);width:64px;height:64px;color:var(--accent-dark);text-align:center;word-break:break-all;border-radius:10px;place-items:center;padding:4px;font-size:10px;display:grid;overflow:hidden}.file-preview .rm{background:var(--text);color:#fff;cursor:pointer;border:none;border-radius:50%;place-items:center;width:20px;height:20px;font-size:11px;display:grid;position:absolute;top:-6px;right:-6px}.mention-pop{background:var(--panel);border:1px solid var(--border);z-index:20;border-radius:12px;max-height:220px;margin-bottom:4px;position:absolute;bottom:100%;left:10px;right:10px;overflow:hidden auto;box-shadow:0 -2px 16px #0000001a}.mention-pop button{border:none;border-bottom:1px solid var(--border);cursor:pointer;text-align:left;background:0 0;align-items:center;gap:10px;width:100%;padding:10px 12px;font-size:14px;display:flex}.mention-pop button:last-child{border-bottom:none}.mention-pop button:active{background:var(--accent-weak)}.send-warning{color:#9a3412;background:#fff7ed;border-radius:8px;justify-content:space-between;align-items:center;gap:8px;margin-bottom:6px;padding:6px 10px;font-size:12px;display:flex}.send-warning button{color:inherit;cursor:pointer;background:0 0;border:none;font-size:14px}.img-viewer{z-index:100;background:#000000eb;place-items:center;display:grid;position:fixed;inset:0}.img-viewer img{object-fit:contain;max-width:100vw;max-height:100svh}.img-viewer .close{top:calc(10px + env(safe-area-inset-top));color:#fff;cursor:pointer;background:#ffffff26;border:none;border-radius:50%;width:40px;height:40px;font-size:18px;position:absolute;right:12px}.settings{flex-direction:column;flex:1;gap:14px;padding:14px;display:flex;overflow-y:auto}.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:14px}.card h2{color:var(--muted);margin:0 0 10px;font-size:14px;font-weight:600}.card .row{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.push-status{margin-bottom:10px;font-size:13px}.push-status.ok{color:var(--ok)}.push-status.warn{color:var(--mention)}.push-status.err{color:var(--danger)}.hint{color:var(--muted);font-size:12px;line-height:1.7}.sub-row{color:var(--muted);border-top:1px solid var(--border);padding:8px 0;font-size:12px}.sub-row .err{color:var(--danger)}.sub-row .ok{color:var(--ok)}.name-input{border:1px solid var(--border);border-radius:8px;flex:1;min-width:120px;padding:9px 12px;font-size:16px}.sheet-overlay{z-index:90;background:#00000059;justify-content:center;align-items:flex-end;display:flex;position:fixed;inset:0}.sheet{background:var(--panel);width:100%;max-width:640px;max-height:80svh;padding-bottom:env(safe-area-inset-bottom);border-radius:16px 16px 0 0;flex-direction:column;animation:.18s ease-out sheet-in;display:flex}@keyframes sheet-in{0%{opacity:.6;transform:translateY(30px)}}.sheet-head{justify-content:space-between;align-items:center;padding:12px 14px 6px;font-size:16px;display:flex}.sheet-body{padding:0 14px 16px;overflow-y:auto}.toast{left:50%;bottom:calc(80px + env(safe-area-inset-bottom));background:var(--text);color:#fff;z-index:200;border-radius:999px;max-width:90vw;padding:8px 18px;font-size:13px;animation:.2s ease-out toast-in;position:fixed;transform:translate(-50%)}@keyframes toast-in{0%{opacity:0;transform:translate(-50%)translateY(8px)}}.loading{color:var(--muted);place-items:center;padding:40px;font-size:13px;display:grid}.spinner{border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;width:22px;height:22px;margin-bottom:8px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@media (width>=700px){.app-frame{border-left:1px solid var(--border);border-right:1px solid var(--border);width:100%;max-width:640px;margin:0 auto}}