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12px}.message-bubble{border-radius:15px;max-width:82%;padding:10px 12px;font-size:13px;line-height:1.42}.chat-input{padding:10px 12px calc(10px + env(safe-area-inset-bottom));gap:9px}.chat-input .input{border-radius:14px;min-height:44px;padding:11px 12px;font-size:16px;line-height:1.35}.chat-input .button-primary{border-radius:14px;min-width:48px;min-height:44px;padding:0 14px}.chat-back-button{min-width:36px;min-height:36px;color:var(--text);cursor:pointer;background:0 0;border:none;border-radius:10px;flex:none;justify-content:center;align-items:center;margin-right:8px;padding:4px 8px;font-size:20px;transition:background .2s,opacity .2s;display:inline-flex}.chat-back-button:hover{background:#ffffff0f}.chat-back-button:active{opacity:.7}.sidebar{width:100%;height:100dvh;padding:14px 12px calc(12px + env(safe-area-inset-bottom))}.sidebar-search{border-radius:14px;min-height:44px;font-size:16px}.users-list{gap:6px;padding-bottom:12px}.user-item{border-radius:16px;align-items:center;min-height:56px;padding:14px 12px;transition:background .18s,transform .12s;display:flex}.identity-footer{padding-top:10px}}:root,[data-theme=night]{--bg:#070a0f;--panel:#0d121a;--panel-deep:#0a0f16;--text:#f0f5ffe6;--muted:#aab9cd8c;--faint:#ffffff09;--accent:#78aaffe6;--accent-soft:#78aaff14;--msg-out:linear-gradient(135deg, #2c64d6, #214aa6);--msg-in:#ffffff06}[data-theme=contrast]{--bg:#05070b;--panel:#111824;--panel-deep:#080d14;--text:#fafdfff5;--muted:#cddaebbd;--faint:#ffffff17;--accent:#82b4ff;--accent-soft:#82b4ff29;--msg-out:linear-gradient(135deg, #3574f0, #2858bd);--msg-in:#ffffff0e}[data-theme=light]{--bg:#eaf1f8;--panel:#f4f8fc;--panel-deep:#e4edf6;--text:#182232f0;--muted:#485870bd;--faint:#364e6e33;--accent:#3069d7f0;--accent-soft:#3069d71f;--msg-out:linear-gradient(135deg, #3d7ee8, #2d62c4);--msg-in:#ffffffd1}[data-theme=light] body{background:radial-gradient(circle at 18% 8%,#5087e617,#0000 55%),radial-gradient(circle at 85% 92%,#50bed20e,#0000 60%),linear-gradient(#edf4fb 0%,#e3ebf4 100%)}[data-theme=light] .profile-modal,[data-theme=light] .chat-identity-card{background:radial-gradient(circle at 20% 0,#4678dc1a,#0000 45%),#f5f7fbf5;box-shadow:0 28px 80px #1e2d462e}[data-theme=light] .profile-modal-backdrop{background:#e1e8f2b8}[data-theme=light] .chat-input{background:#eef3f9e6}[data-theme=light] .chat-input .input,[data-theme=light] .user-search-input,[data-theme=light] .profile-modal-input,[data-theme=light] .profile-name-input,[data-theme=light] .profile-alias-edit{color:var(--text);background:#ffffffe6;border-color:#4658732e}[data-theme=light] .chat-input .button-primary,[data-theme=light] .profile-modal-primary,[data-theme=light] .theme-option{color:var(--text);background:#2d69dc14;border-color:#46587329}[data-theme=light] .chat-input .button-primary:enabled,[data-theme=light] .profile-modal-primary:hover,[data-theme=light] .theme-option.active{color:var(--text);background:#2d69dc26;border-color:#2d69dc42}[data-theme=light] .identity-footer,[data-theme=light] .users-bottom{background:#eef3f9eb}[data-theme=light] .system-message,[data-theme=light] .chat-identity-action{background:#fffc;border-color:#46587329}[data-theme=light] .app-sidebar{border-right-color:#364e6e38}[data-theme=light] .chat-header,[data-theme=light] .chat-input,[data-theme=light] .users-bottom,[data-theme=light] .user-search{border-color:#364e6e2e}[data-theme=light] .message-bubble.in{border-color:#364e6e29}.theme-options{grid-template-columns:repeat(3,1fr);gap:8px;display:grid}.theme-option{border:1px solid var(--faint);color:var(--muted);cursor:pointer;transition:background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease), transform .12s var(--ease);background:#ffffff06;border-radius:12px;padding:9px 10px;font-size:12px}.theme-option:hover{color:var(--text);background:#78aaff14;transform:translateY(-1px)}.theme-option.active{color:var(--text);background:#78aaff24;border-color:#78aaff38}