:root{color-scheme:dark;--bg: #0b0d10;--surface: #151a21;--border: #232a33;--accent: #4f8cff;--incoming-bg: #20262f;--text: #e6eaf0;--text-muted: #8b95a3;--danger: #ff6b6b;--danger-bg: #b3261e;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"}@media (prefers-color-scheme: light){:root{color-scheme:light;--bg: #f4f5f7;--surface: #ffffff;--border: #dfe3e8;--incoming-bg: #eef0f3;--text: #14181f;--text-muted: #6b7280;--danger: #b3261e}}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-sans);line-height:1.4;-webkit-font-smoothing:antialiased}button,input{font:inherit;color:inherit}.app-shell{display:flex;height:100vh}.app-error{position:fixed;top:8px;left:50%;transform:translate(-50%);z-index:20;display:flex;align-items:center;gap:12px;max-width:min(90vw,480px);padding:8px 12px;border:1px solid var(--danger);border-radius:8px;background:var(--surface);color:var(--danger);font-size:14px}.app-error button{background:none;border:none;color:inherit;cursor:pointer;font-size:18px;line-height:1;padding:0}.app-loading{height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg)}.spinner{width:32px;height:32px;border-radius:50%;border:3px solid var(--border);border-top-color:var(--accent);animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.chat-empty{flex:1;display:flex;align-items:center;justify-content:center;color:var(--text-muted)}.conversation-list{width:280px;flex-shrink:0;background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;height:100vh}.conversation-list-header{padding:16px;border-bottom:1px solid var(--border);font-weight:600}.conversation-items{list-style:none;margin:0;padding:8px;overflow-y:auto;flex:1}.conversation-item{width:100%;display:grid;grid-template-columns:1fr auto;column-gap:8px;row-gap:2px;text-align:left;background:none;border:none;border-radius:8px;padding:8px;cursor:pointer}.conversation-item:hover{background:#7f7f7f14}.conversation-item-active{background:#4f8cff24}.conversation-username{font-weight:600;grid-column:1}.conversation-time{color:var(--text-muted);font-size:12px;grid-column:2}.conversation-preview{grid-column:1 / -1;color:var(--text-muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conversation-subtitle{grid-column:1 / -1;color:var(--text-muted);font-size:11px}.notifications-toggle{padding:0 8px 8px}.notifications-enable{width:100%;background:none;border:1px solid var(--border);border-radius:8px;padding:8px;cursor:pointer;color:var(--accent);font-size:13px}.notifications-enable:hover{background:#7f7f7f14}.notifications-status{margin:0;padding:0 8px 8px;color:var(--text-muted);font-size:12px}.notifications-blocked{color:var(--danger)}.new-chat{display:flex;gap:8px;padding:8px;border-top:1px solid var(--border)}.new-group-toggle{margin:0 8px 8px;background:none;border:1px solid var(--border);border-radius:8px;padding:8px;cursor:pointer;color:var(--text-muted)}.new-group-toggle:hover{background:#7f7f7f14}.new-group{display:flex;flex-direction:column;gap:8px;padding:8px;border-top:1px solid var(--border)}.new-group-name-input,.new-group-member-input{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:8px}.new-group-member-row{display:flex;gap:8px}.new-group-member-row .new-group-member-input{flex:1;min-width:0}.new-group-members{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}.new-group-member{display:flex;align-items:center;justify-content:space-between;background:var(--incoming-bg);border-radius:8px;padding:4px 8px;font-size:13px}.new-group-error{color:var(--danger);font-size:13px;margin:0}.new-group-actions{display:flex;justify-content:flex-end;gap:8px}.new-group-cancel{background:none;border:1px solid var(--border);border-radius:8px;padding:8px 16px;cursor:pointer}.new-chat-input{flex:1;min-width:0;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:8px}.new-chat-button,.chat-send,.auth-submit{background:var(--accent);color:#fff;border:none;border-radius:8px;padding:8px 16px;font-weight:600;cursor:pointer}.new-chat-button:hover,.chat-send:hover,.auth-submit:hover{filter:brightness(1.08)}.chat-view{flex:1;min-width:0;display:flex;flex-direction:column;height:100vh}.chat-header{display:flex;align-items:center;gap:8px;padding:16px;border-bottom:1px solid var(--border);background:var(--surface)}.chat-back{background:none;border:none;font-size:18px;cursor:pointer;padding:4px 8px;border-radius:8px}.chat-back:hover{background:#7f7f7f14}.chat-peer{font-weight:600}.chat-peer-group{background:none;border:none;cursor:pointer;text-align:left;font-size:inherit}.chat-peer-group:hover{text-decoration:underline}.verify-indicator{margin-left:auto;background:none;border:1px solid var(--border);border-radius:999px;padding:4px 10px;font-size:12px;cursor:pointer;color:var(--text-muted)}.verify-indicator:hover{background:#7f7f7f14}.verify-indicator-verified{color:var(--accent);border-color:var(--accent)}.verify-indicator-changed{color:#fff;background:var(--danger-bg);border-color:var(--danger-bg);font-weight:600}.verify-indicator-changed:hover{filter:brightness(1.08)}.chat-pending-banner{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px;background:var(--danger-bg);color:#fff;font-size:13px;font-weight:600}.chat-pending-banner button{flex-shrink:0;background:#ffffff29;border:1px solid rgba(255,255,255,.4);border-radius:8px;padding:4px 12px;color:inherit;cursor:pointer;font-weight:600}.chat-pending-banner button:hover{background:#ffffff42}.verify-body{flex:1;overflow-y:auto;padding:20px 16px;display:flex;flex-direction:column;gap:16px}.verify-instruction{margin:0;color:var(--text-muted);line-height:1.5}.verify-number{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:18px;letter-spacing:.03em;line-height:1.8;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:16px;word-break:break-word;text-align:center}.verify-verified-label{margin:0;color:var(--accent);font-weight:600}.verify-mark,.verify-unverify{align-self:flex-start;border-radius:8px;padding:8px 16px;cursor:pointer}.verify-mark{background:var(--accent);color:#fff;border:none;font-weight:600}.verify-mark:hover{filter:brightness(1.08)}.verify-unverify{background:none;border:1px solid var(--border);color:var(--text)}.verify-unverify:hover{background:#7f7f7f14}.verify-unavailable{margin:0;color:var(--text-muted);line-height:1.5}.verify-warning{border:2px solid var(--danger);border-radius:12px;padding:16px;background:#ff6b6b14;display:flex;flex-direction:column;gap:10px}.verify-warning-title{margin:0;font-size:16px;font-weight:700;color:var(--danger)}.verify-warning p{margin:0;line-height:1.5}.verify-warning-actions{display:flex;gap:8px}.verify-accept,.verify-reject{border-radius:8px;padding:8px 16px;cursor:pointer;font-weight:600}.verify-accept{background:var(--accent);color:#fff;border:none}.verify-accept:hover{filter:brightness(1.08)}.verify-reject{background:none;border:1px solid var(--danger);color:var(--danger)}.verify-reject:hover{background:#ff6b6b1a}.verify-warning-note{color:var(--text-muted);font-size:13px}.verify-stale{border:1px solid var(--danger);border-radius:12px;padding:12px 16px;display:flex;flex-direction:column;gap:6px}.verify-stale p{margin:0;line-height:1.5}.verify-stale-title{font-weight:700;color:var(--danger)}.chat-messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:8px}.chat-composer{position:sticky;bottom:0;display:flex;gap:8px;padding:12px 16px calc(12px + env(safe-area-inset-bottom));border-top:1px solid var(--border);background:var(--surface)}.chat-input{flex:1;min-width:0;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:8px 12px}.bubble-row{display:flex}.bubble-row-out{justify-content:flex-end}.bubble-row-in{justify-content:flex-start}.bubble{max-width:72%;padding:8px 12px;border-radius:16px;line-height:1.4}.bubble-out{background:var(--accent);color:#fff;border-bottom-right-radius:4px}.bubble-in{background:var(--incoming-bg);color:var(--text);border-bottom-left-radius:4px}.bubble-text{margin:0;white-space:pre-wrap;word-break:break-word}.bubble-sender{margin:0 0 2px;font-size:12px;font-weight:600;color:var(--accent)}.bubble-placeholder{font-style:italic;opacity:.85}.bubble-unverified-sender{border:1px solid var(--danger)}.bubble-unverified-warning{margin:0 0 4px;font-size:12px;font-weight:600;line-height:1.35;color:var(--danger)}.bubble-meta{display:flex;gap:4px;justify-content:flex-end;margin-top:4px;font-size:11px;opacity:.75}.auth-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg);padding:16px}.auth-card{width:100%;max-width:360px;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:24px}.auth-title{margin:0 0 16px;font-size:20px}.auth-tabs{display:flex;gap:4px;margin-bottom:16px;border-bottom:1px solid var(--border)}.auth-tab{flex:1;background:none;border:none;color:var(--text-muted);padding:8px;cursor:pointer;border-bottom:2px solid transparent}.auth-tab-active{color:var(--text);border-bottom-color:var(--accent)}.auth-form{display:flex;flex-direction:column;gap:8px}.auth-label{font-size:12px;color:var(--text-muted)}.auth-input{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:8px 12px}.auth-error{color:var(--danger);font-size:13px;margin:0}.auth-submit{margin-top:8px}.group-info-body{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}.group-info-heading{margin:0;font-size:13px;color:var(--text-muted);font-weight:600;text-transform:uppercase}.group-info-members{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}.group-info-member{display:flex;align-items:center;justify-content:space-between;background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:8px 12px}.group-info-member button{background:none;border:1px solid var(--border);border-radius:8px;padding:4px 8px;cursor:pointer;color:var(--danger)}.group-info-add{display:flex;gap:8px}.group-info-add-input{flex:1;min-width:0;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:8px 12px}.group-info-leave{align-self:flex-start;background:none;border:1px solid var(--danger);color:var(--danger);border-radius:8px;padding:8px 16px;cursor:pointer}