:root{--bg:#f6f7f9;--panel:#fff;--text:#1d2329;--muted:#6b7680;--line:#e3e7eb;--accent:#2f9e74;--accent-text:#fff;--mine:#c9f0dc;--theirs:#fff;--danger:#c4453c;--notice:#fff6dc;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root{--bg:#121518;--panel:#1b1f23;--text:#e6eaee;--muted:#8d98a3;--line:#2c3338;--accent:#3fb68a;--accent-text:#0d1512;--mine:#1f4a38;--theirs:#262c31;--danger:#ef7a70;--notice:#3a3222;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);-webkit-text-size-adjust:100%;font-family:system-ui,-apple-system,Hiragino Sans,Noto Sans JP,sans-serif;font-size:16px}button,input,select,textarea{font:inherit;color:inherit}input,select,textarea{border:1px solid var(--line);background:var(--panel);border-radius:10px;width:100%;padding:10px 12px;font-size:16px}button{border:1px solid var(--line);background:var(--panel);cursor:pointer;border-radius:10px;padding:10px 14px}button:disabled{opacity:.5;cursor:default}button.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-text);font-weight:600}button.ghost{background:0 0;border-color:#0000}button.danger{color:var(--danger)}.muted{color:var(--muted)}[role=alert]{color:var(--danger)}.empty{text-align:center;padding:24px 16px}.stack{flex-direction:column;gap:14px;display:flex}.stack label{color:var(--muted);flex-direction:column;gap:6px;font-size:14px;display:flex}.row{gap:8px;display:flex}.register{max-width:420px;padding:max(24px, env(safe-area-inset-top)) 16px 24px;margin:0 auto}.chat{height:100%;display:flex}.sidebar{width:320px;padding:max(12px, env(safe-area-inset-top)) 16px 12px;border-right:1px solid var(--line);background:var(--panel);flex-direction:column;flex-shrink:0;gap:10px;display:flex;overflow-y:auto}.sidebar-header{justify-content:space-between;align-items:center;display:flex}.sidebar-header h1{margin:0;font-size:22px}.status{color:var(--muted);font-size:12px}.status.online:before{content:"● ";color:var(--accent)}.rooms{flex-direction:column;gap:4px;margin:0;padding:0;list-style:none;display:flex}.rooms button{text-align:left;border-color:#0000;flex-direction:column;align-items:flex-start;gap:2px;width:100%;display:flex}.rooms button.selected{background:var(--bg)}.rooms .muted{white-space:nowrap;text-overflow:ellipsis;max-width:100%;font-size:13px;overflow:hidden}.diagnostics{color:var(--muted);margin-top:auto;font-size:13px}.main{flex-direction:column;flex:1;min-width:0;display:flex}@media (max-width:720px){.sidebar{border-right:none;width:100%}.main,.chat.room-open .sidebar{display:none}.chat.room-open .main{display:flex}}@media (min-width:721px){.back{display:none}}.room{flex-direction:column;height:100%;display:flex}.room-header{padding:max(8px, env(safe-area-inset-top)) 8px 8px;border-bottom:1px solid var(--line);background:var(--panel);align-items:center;gap:4px;display:flex}.room-header h2{white-space:nowrap;text-overflow:ellipsis;flex:1;margin:0;font-size:17px;overflow:hidden}.back{padding:4px 10px;font-size:26px;line-height:1}.notice{background:var(--notice);text-align:center;margin:0;padding:8px 16px;font-size:13px}.settings{border-bottom:1px solid var(--line);background:var(--panel);padding:8px 16px 16px}.settings h3{color:var(--muted);margin:12px 0 6px;font-size:14px}.members{margin:0 0 8px;padding:0;list-style:none}.members li{align-items:center;gap:6px;padding:4px 0;display:flex}.members .danger{margin-left:auto;padding:4px 8px}.messages{flex-direction:column;flex:1;gap:10px;margin:0;padding:12px 16px;list-style:none;display:flex;overflow-y:auto}.messages li{flex-direction:column;max-width:80%;display:flex}.messages li.mine{align-self:flex-end;align-items:flex-end}.messages li.theirs{align-self:flex-start}.sender{color:var(--muted);margin:0 0 2px 4px;font-size:12px}.bubble{background:var(--theirs);border:1px solid var(--line);white-space:pre-wrap;overflow-wrap:anywhere;border-radius:16px;padding:8px 12px}.mine .bubble{background:var(--mine);border-color:#0000}.meta{color:var(--muted);margin:2px 4px 0;font-size:11px}.composer{padding:8px 12px max(8px, env(safe-area-inset-bottom));border-top:1px solid var(--line);background:var(--panel);align-items:flex-end;gap:8px;display:flex}.composer textarea{resize:none;max-height:120px}.composer button{white-space:nowrap;flex-shrink:0}.attach{cursor:pointer;flex-shrink:0;padding:8px 6px;font-size:20px}.attachment{flex-direction:column;align-items:flex-start;gap:4px;display:flex}.mine .attachment{align-items:flex-end}.attachment img{border:1px solid var(--line);border-radius:12px;max-width:min(260px,70vw);max-height:320px}.attachment .save{color:var(--accent);padding:2px 8px;font-size:12px}.install-hint{background:var(--notice);border-radius:10px;padding:10px 12px;font-size:14px}.install-hint ol{margin:6px 0;padding-left:1.4em}.notify-card{border:1px solid var(--accent);border-radius:10px;flex-direction:column;gap:8px;padding:10px 12px;font-size:14px;display:flex}.install-hint p{margin:6px 0 0}