:root{--bg: #0a0a0a;--bg-elev: #1c1c1e;--border: #2a2a2c;--text: #f2f2f7;--text-dim: #8e8e93;--mine: #0a84ff;--mine-text: #ffffff;--theirs: #262628;--theirs-text: #f2f2f7;--ai: #2c1e4a;--ai-border: #6b46c1;--ai-text: #e9e2ff;--sender: #8e8e93}*{box-sizing:border-box}html,body,#root{height:100%;margin:0;background:var(--bg);color:var(--text);font:16px/1.4 -apple-system,BlinkMacSystemFont,SF Pro Text,Segoe UI,Roboto,sans-serif;-webkit-font-smoothing:antialiased}button,input{font:inherit;color:inherit}.login-wrap{min-height:100dvh;display:grid;place-items:center;padding:24px}.login{width:100%;max-width:320px;display:flex;flex-direction:column;gap:12px}.login h1{text-align:center;font-weight:600;letter-spacing:-.02em;margin:0 0 12px}.login input{padding:12px 14px;border-radius:10px;border:1px solid var(--border);background:var(--bg-elev);outline:none}.login input:focus{border-color:var(--mine)}.login button{padding:12px;border-radius:10px;background:var(--mine);color:var(--mine-text);border:none;font-weight:600}.login button:disabled{opacity:.5}.error{color:#ff453a;text-align:center;font-size:14px}.app{display:grid;grid-template-rows:auto 1fr auto;height:100dvh;max-width:720px;margin:0 auto}.topbar{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:env(safe-area-inset-top,0) 12px 8px;padding-top:max(env(safe-area-inset-top,0),12px);border-bottom:1px solid var(--border);background:#0a0a0ad9;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);position:sticky;top:0;z-index:2}.topbar .who{font-weight:600;text-align:center}.topbar .link{background:none;border:none;color:var(--mine);padding:6px 8px;cursor:pointer;font-size:15px}.topbar .link:first-child{text-align:left}.topbar .link:last-child{text-align:right}.topbar .link.placeholder{visibility:hidden}.segmented{justify-self:center;display:inline-flex;background:var(--bg-elev);border:1px solid var(--border);border-radius:8px;padding:2px;gap:2px}.segmented .seg{background:transparent;color:var(--text-dim);border:none;padding:5px 14px;border-radius:6px;font-size:14px;font-weight:600;cursor:pointer}.segmented .seg.active{background:#ffffff1a;color:var(--text)}.app-private .topbar{border-bottom-color:#3a2f5c}.private-banner{font-size:12px;color:#b7a6ee;text-align:center;padding:6px 12px;border-bottom:1px solid var(--border);background:#6b46c114}.empty-private{color:var(--text-dim);font-size:14px;text-align:center;padding:32px 24px;line-height:1.5}.row-ai-private .bubble.ai{max-width:92%;background:#23193d}.seg-badge{display:inline-block;min-width:18px;padding:0 5px;margin-left:6px;border-radius:9px;background:#ff453a;color:#fff;font-size:11px;font-weight:700;line-height:16px;text-align:center;vertical-align:1px}.in-app-toast{position:fixed;top:max(env(safe-area-inset-top,0),60px);left:50%;transform:translate(-50%);width:min(92vw,380px);z-index:10;background:var(--bg-elev);border:1px solid var(--border);border-left:3px solid var(--mine);color:var(--text);padding:10px 14px;border-radius:12px;box-shadow:0 10px 30px #0006;text-align:left;cursor:pointer;animation:toast-in .18s ease-out}.toast-title{font-weight:600;font-size:14px}.toast-body{font-size:13px;color:var(--text-dim);margin-top:2px}@keyframes toast-in{0%{opacity:0;transform:translate(-50%,-8px)}to{opacity:1;transform:translate(-50%)}}.notif-bar{display:flex;align-items:center;gap:8px;padding:8px 12px;border-bottom:1px solid var(--border);background:#0a84ff1a;font-size:13px;color:var(--text)}.notif-bar span{flex:1}.notif-btn{background:var(--mine);color:var(--mine-text);border:none;border-radius:6px;padding:6px 10px;font-weight:600;cursor:pointer}.notif-dismiss{background:transparent;color:var(--text-dim);border:none;font-size:20px;line-height:1;cursor:pointer;padding:0 4px}.thread-list{position:absolute;top:52px;left:12px;right:12px;max-width:400px;background:var(--bg-elev);border:1px solid var(--border);border-radius:12px;padding:6px;z-index:3;max-height:60vh;overflow-y:auto}.thread-list .new-thread{display:flex;justify-content:flex-start;gap:8px;width:100%;padding:10px 12px;border:none;background:transparent;color:var(--mine);font-weight:600;text-align:left;border-radius:8px;cursor:pointer}.thread-list .new-thread:hover{background:#ffffff0f}.thread-row{display:flex;align-items:center;gap:2px;border-radius:8px}.thread-row.active,.thread-row:hover{background:#ffffff0f}.thread-list .thread-item{flex:1;display:flex;justify-content:space-between;gap:8px;padding:10px 12px;border:none;background:transparent;color:var(--text);text-align:left;border-radius:8px;cursor:pointer;min-width:0}.thread-title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.thread-action{background:transparent;border:none;color:var(--text-dim);padding:8px 10px;cursor:pointer;font-size:15px;border-radius:6px}.thread-action:hover{color:var(--text);background:#ffffff0f}.thread-action.danger:hover{color:#ff453a}.thread-date{color:var(--text-dim);font-size:13px}.messages{overflow-y:auto;padding:12px 12px 4px;display:flex;flex-direction:column;gap:2px}.row{display:flex;flex-direction:column;margin-top:2px}.row-mine{align-items:flex-end}.row-theirs{align-items:flex-start}.row-ai{align-items:center}.sender{font-size:12px;color:var(--sender);margin:6px 4px 2px}.bubble{max-width:78%;padding:8px 12px;border-radius:18px;word-wrap:break-word;white-space:pre-wrap;line-height:1.35}.bubble.mine{background:var(--mine);color:var(--mine-text);border-bottom-right-radius:4px}.bubble.theirs{background:var(--theirs);color:var(--theirs-text);border-bottom-left-radius:4px}.bubble.ai{background:var(--ai);color:var(--ai-text);border:1px solid var(--ai-border);border-radius:14px;max-width:90%;font-size:15px;margin:8px 0;padding:10px 14px}.row-ai .sender{color:#b7a6ee;font-weight:600;margin-bottom:4px}.composer{display:flex;gap:8px;padding:8px 10px;padding-bottom:max(env(safe-area-inset-bottom,0),8px);border-top:1px solid var(--border);background:var(--bg)}.composer input{flex:1;padding:10px 14px;border-radius:20px;border:1px solid var(--border);background:var(--bg-elev);outline:none}.composer input:focus{border-color:var(--mine)}.composer button{width:40px;height:40px;border-radius:50%;border:none;background:var(--mine);color:var(--mine-text);font-size:18px;cursor:pointer;align-self:flex-end}.composer button:disabled{background:#2a2a2c;color:var(--text-dim);cursor:not-allowed}