:root{--ink:#18211d;--muted:#69736d;--canvas:#f5f6f3;--panel:#fff;--panel-soft:#f0f3ef;--line:#e4e9e5;--green:#2f8f63;--green-dark:#23704d;--green-soft:#dff1e8;--incoming:#fff;--shadow:0 18px 50px #283d3217}*{box-sizing:border-box}html,body{min-height:100%}body{color:var(--ink);background:var(--canvas);-webkit-font-smoothing:antialiased;margin:0;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible{outline-offset:2px;outline:3px solid #2f8f6359}.auth-shell{background:radial-gradient(circle at 20% 10%, #e8f5ed 0, transparent 30%), var(--canvas);place-items:center;min-height:100svh;padding:24px;display:grid}.auth-card{background:var(--panel);border:1px solid var(--line);width:min(100%,430px);box-shadow:var(--shadow);border-radius:28px;padding:44px}.brand-mark{color:#fff;background:var(--green);border-radius:13px;place-items:center;width:42px;height:42px;font-size:24px;font-weight:800;display:grid;transform:rotate(-8deg)}.auth-kicker,.rail-label{color:var(--green-dark);letter-spacing:.14em;text-transform:uppercase;margin:26px 0 10px;font-size:12px;font-weight:800}.auth-card h1{letter-spacing:-.055em;margin:0;font-size:38px;line-height:1.05}.auth-copy{color:var(--muted);margin:16px 0 32px;font-size:15px;line-height:1.6}.auth-form{gap:18px;display:grid}.auth-form label{color:var(--ink);gap:8px;font-size:13px;font-weight:700;display:grid}.auth-form input,.search-field input,.composer input{border:1px solid var(--line);background:var(--panel);width:100%;min-height:48px;color:var(--ink);border-radius:14px;padding:0 14px}.auth-form input:focus,.search-field input:focus,.composer input:focus{border-color:var(--green);outline:3px solid #2f8f6321}.password-field{position:relative}.password-field input{padding-right:72px}.password-toggle{min-height:32px;color:var(--green-dark);background:0 0;border:0;border-radius:9px;padding:0 9px;font-size:12px;font-weight:800;position:absolute;top:50%;right:8px;transform:translateY(-50%)}.password-toggle:hover{background:var(--green-soft)}.primary-button{background:var(--ink);color:#fff;border:0;border-radius:15px;justify-content:space-between;align-items:center;min-height:52px;padding:0 16px 0 20px;font-weight:800;transition:transform .18s,background .18s;display:flex}.primary-button:hover{background:var(--green-dark);transform:translateY(-1px)}.primary-button:disabled{opacity:.6;transform:none}.form-error{color:#a13f37;margin:-4px 0 0;font-size:13px}.form-success{border:1px solid color-mix(in srgb, var(--green) 35%, transparent);color:var(--green-dark);background:var(--green-soft);border-radius:12px;margin:18px 0 0;padding:11px 13px;font-size:13px}.auth-note{color:var(--muted);text-align:center;margin:26px 0 0;font-size:12px}.app-shell{background:var(--canvas);justify-content:center;width:100%;height:100svh;min-height:0;display:grid;overflow:hidden}.app-shell.user-mode{grid-template-columns:minmax(0,1fr);width:100%}.app-shell.admin-mode{grid-template-columns:340px minmax(0,1fr);width:100%}.user-rail{border-right:1px solid var(--line);background:var(--panel-soft);scrollbar-width:thin;scrollbar-color:color-mix(in srgb, var(--green) 62%, var(--panel-soft)) transparent;height:100%;min-height:0;padding:30px 18px;overflow-y:auto}.user-rail::-webkit-scrollbar{width:9px}.message-stream::-webkit-scrollbar{width:9px}.user-rail::-webkit-scrollbar-track{background:0 0}.message-stream::-webkit-scrollbar-track{background:0 0}.user-rail::-webkit-scrollbar-thumb{background:color-mix(in srgb, var(--green) 62%, var(--panel-soft));background-clip:padding-box;border:3px solid #0000;border-radius:999px;min-height:48px}.message-stream::-webkit-scrollbar-thumb{background:color-mix(in srgb, var(--green) 62%, var(--panel-soft));background-clip:padding-box;border:3px solid #0000;border-radius:999px;min-height:48px}.user-rail::-webkit-scrollbar-thumb:hover{background:color-mix(in srgb, var(--green) 82%, var(--panel-soft));background-clip:padding-box}.message-stream::-webkit-scrollbar-thumb:hover{background:color-mix(in srgb, var(--green) 82%, var(--panel-soft));background-clip:padding-box}.rail-head{justify-content:space-between;align-items:start;padding:0 10px;display:flex}.rail-head h1{letter-spacing:-.04em;margin:0;font-size:22px}.rail-label{margin:0 0 7px;font-size:10px}.search-field{border:1px solid var(--line);background:var(--panel);min-height:44px;color:var(--muted);border-radius:13px;align-items:center;gap:8px;margin:28px 6px 26px;padding:0 12px;display:flex}.search-field input{background:0 0;border:0;outline:none;min-height:40px;padding:0}.rail-section{color:var(--muted);letter-spacing:.12em;text-transform:uppercase;margin:0 10px 8px;font-size:11px;font-weight:800}.user-list{gap:4px;display:grid}.user-row{width:100%;color:var(--ink);text-align:left;background:0 0;border:0;border-radius:14px;align-items:center;gap:12px;padding:12px 10px;display:flex;position:relative}.user-row:hover,.user-row.selected{background:var(--panel);box-shadow:0 4px 14px #283d320d}.user-row span:not(.online-dot){gap:4px;min-width:0;display:grid}.user-row strong{font-size:14px}.user-row small{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;font-size:12px;overflow:hidden}.avatar{width:38px;height:38px;color:var(--green-dark);background:var(--green-soft);border-radius:13px;flex:none;place-items:center;font-size:14px;font-weight:800;display:grid}.avatar.large{border-radius:14px;width:42px;height:42px}.online-dot{background:var(--green);width:7px;height:7px;box-shadow:0 0 0 3px var(--green-soft);border-radius:50%;flex:none;margin-left:auto}.new-user-button{width:100%;color:var(--green-dark);background:0 0;border:1px dashed #b8c9bd;border-radius:13px;align-items:center;gap:9px;margin-top:24px;padding:13px 10px;font-size:13px;font-weight:800;display:flex}.rail-status{color:var(--muted);margin:18px 10px;font-size:13px;line-height:1.5}.new-user-button span{font-size:18px}.icon-button{width:38px;height:38px;color:var(--muted);background:0 0;border:0;border-radius:12px;place-items:center;padding:0;font-size:18px;display:grid}.icon-button:hover{background:var(--panel-soft);color:var(--ink)}.password-action{border:1px solid var(--line);min-height:36px;color:var(--green-dark);background:var(--panel);border-radius:10px;padding:0 11px;font-size:11px;font-weight:800}.password-action:hover{background:var(--green-soft)}.delete-action{color:#a13f37;background:0 0;border:1px solid #d9a7a1;border-radius:10px;min-height:36px;padding:0 11px;font-size:11px;font-weight:800}.delete-action:hover{color:#fff;background:#a13f37}.more-menu-wrap{position:relative}.more-menu{z-index:4;border:1px solid var(--line);background:var(--panel);min-width:140px;box-shadow:var(--shadow);border-radius:12px;padding:6px;position:absolute;top:calc(100% + 8px);right:0}.more-menu .delete-action{white-space:nowrap;width:100%}.danger-dialog{border-color:#d9a7a1}.danger-dialog .rail-label{color:#a13f37}.delete-confirm-button{color:#fff;background:#a13f37;border:0;border-radius:13px;min-height:46px;padding:0 15px;font-weight:800}.delete-confirm-button:hover{background:#84312b}.conversation-panel{border-inline:1px solid var(--line);background:var(--panel);height:100%;min-height:0;box-shadow:var(--shadow);grid-template-rows:auto auto minmax(0,1fr) auto;display:grid;position:relative;overflow:hidden}.conversation-head{border-bottom:1px solid var(--line);background:color-mix(in srgb, var(--panel) 94%, var(--green-soft));align-items:center;gap:12px;min-height:84px;padding:16px 24px;display:flex}.conversation-identity{min-width:0}.conversation-identity h2{letter-spacing:-.02em;margin:0 0 3px;font-size:16px}.conversation-identity p{color:var(--muted);align-items:center;gap:8px;margin:0;font-size:12px;display:flex}.head-actions{gap:2px;margin-left:auto;display:flex}.privacy-note{min-height:38px;color:var(--muted);background:var(--panel-soft);justify-content:center;align-items:center;gap:8px;padding:8px 18px;font-size:11px;display:flex}.privacy-note span{color:var(--green);font-size:17px}.privacy-note .realtime-state{color:var(--muted);margin-left:8px;font-size:10px;font-weight:800}.privacy-note .realtime-state.connected{color:var(--green)}.privacy-note .realtime-state.fallback{color:#b27a2b}.message-stream{background:radial-gradient(circle at 90% 0, #dff1e88c, transparent 25%), var(--canvas);scrollbar-width:thin;scrollbar-color:color-mix(in srgb, var(--green) 62%, var(--canvas)) transparent;min-height:0;padding:24px 24px 30px;overflow-y:auto}.loading-copy,.empty-chat{min-height:120px;color:var(--muted);text-align:center;place-items:center;gap:6px;display:grid}.empty-chat strong{color:var(--ink);font-size:15px}.empty-chat span{font-size:13px}.inline-error{color:#a13f37;text-align:center;background:#fff4f2;border:1px solid #e9c5c1;border-radius:12px;width:min(100%,560px);margin:0 auto 16px;padding:10px 12px;font-size:12px}.error-copy{color:#a13f37}.day-divider{color:var(--muted);align-items:center;gap:12px;margin:0 0 24px;font-size:11px;font-weight:700;display:flex}.day-divider:before,.day-divider:after{content:"";background:var(--line);flex:1;height:1px}.message-line{margin:10px 0;display:flex}.message-line.outgoing{justify-content:flex-end}.bubble{border:1px solid var(--line);background:var(--incoming);border-radius:17px 17px 17px 5px;max-width:min(78%,440px);padding:12px 14px 8px;box-shadow:0 4px 12px #283d320a}.outgoing .bubble{background:var(--green-soft);border-color:#c7e6d5;border-radius:17px 17px 5px}.bubble p{white-space:pre-wrap;overflow-wrap:anywhere;margin:0;font-size:14px;line-height:1.45}.bubble footer{min-height:18px;color:var(--muted);justify-content:flex-end;align-items:center;gap:5px;margin-top:4px;font-size:10px;display:flex}.status{letter-spacing:-3px;font-size:12px}.status.read{color:#1c86c3}.status.pending{letter-spacing:0}.composer{min-height:76px;padding:13px 18px;padding-bottom:calc(13px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:var(--panel);align-items:center;gap:9px;display:flex}.emoji-wrap{flex:none;position:relative}.emoji-popover{z-index:5;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:18px;position:absolute;bottom:58px;left:0;overflow:hidden}.composer input{background:var(--canvas);min-height:48px}.emoji-button,.send-button{width:44px;height:44px;color:var(--muted);background:0 0;border:0;border-radius:13px;flex:none;place-items:center;padding:0;font-size:22px;display:grid}.emoji-button:hover{background:var(--panel-soft)}.send-button{color:#fff;background:var(--green);font-size:25px;font-weight:600;transition:background .18s,transform .18s}.send-button:hover{background:var(--green-dark);transform:translateY(-1px)}.send-button:disabled{cursor:not-allowed;opacity:.45;transform:none}.composer input:disabled{cursor:not-allowed;opacity:.65}.dialog-backdrop{z-index:10;background:#18211d57;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.create-user-dialog{border:1px solid var(--line);background:var(--panel);width:min(100%,430px);box-shadow:var(--shadow);border-radius:22px;padding:24px}.dialog-head{justify-content:space-between;align-items:start;gap:16px;display:flex}.dialog-head h2{letter-spacing:-.04em;margin:0;font-size:22px}.dialog-head .rail-label{margin:0 0 6px}.dialog-copy{color:var(--muted);margin:14px 0 22px;font-size:13px;line-height:1.5}.create-user-form{gap:16px;display:grid}.create-user-form label{color:var(--ink);gap:7px;font-size:13px;font-weight:700;display:grid}.create-user-form input{border:1px solid var(--line);min-height:46px;color:var(--ink);background:var(--panel);border-radius:12px;padding:0 12px}.dialog-actions{justify-content:flex-end;gap:9px;margin-top:4px;display:flex}.dialog-actions .primary-button{min-width:150px}.secondary-button{border:1px solid var(--line);min-height:46px;color:var(--ink);background:var(--panel);border-radius:13px;padding:0 15px;font-weight:800}.secondary-button:hover{background:var(--panel-soft)}.mobile-theme-toggle{display:none}[data-theme=dark]{--ink:#fff;--muted:#c3cbc6;--canvas:#070908;--panel:#0e1110;--panel-soft:#151917;--line:#252a27;--incoming:#161a17;--green-soft:#1f2b23;--green:#62bf8d;--green-dark:#9ce0b8;--shadow:0 18px 50px #0000006b}[data-theme=dark] .auth-shell{background:var(--canvas)}[data-theme=dark] .message-stream{background:radial-gradient(circle at 90% 0, #2b59404d, transparent 25%), var(--canvas)}[data-theme=dark] .user-rail::-webkit-scrollbar-thumb{background:color-mix(in srgb, var(--green) 70%, var(--canvas));background-clip:padding-box}[data-theme=dark] .message-stream::-webkit-scrollbar-thumb{background:color-mix(in srgb, var(--green) 70%, var(--canvas));background-clip:padding-box}[data-theme=dark] .user-rail::-webkit-scrollbar-thumb:hover{background:color-mix(in srgb, var(--green) 88%, var(--canvas));background-clip:padding-box}[data-theme=dark] .message-stream::-webkit-scrollbar-thumb:hover{background:color-mix(in srgb, var(--green) 88%, var(--canvas));background-clip:padding-box}@media (max-width:720px){.app-shell{display:block}.user-rail{z-index:3;width:100%;padding:24px 18px;display:none;position:fixed;inset:0}.user-rail.open{display:block}.conversation-panel{height:100svh;min-height:0}.app-shell.admin-mode{width:100%}.conversation-head{min-height:72px;padding:12px 15px}.back-button,.more-button{display:grid}.message-stream{padding:20px 14px 24px}.bubble{max-width:86%}.emoji-popover{position:fixed;bottom:74px;left:10px;right:10px}.mobile-theme-toggle{display:none}.auth-card{border-radius:24px;padding:32px 24px}.auth-card h1{font-size:34px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}