:root{--accent: #0088cc;--accent-dark: #006aaa;--accent-glow: rgba(0, 136, 204, .14);--sidebar-bg: #1a2639;--sidebar-hover: #253449;--sidebar-text: rgba(255, 255, 255, .82);--sidebar-muted: rgba(255, 255, 255, .38);--sidebar-divider: rgba(255, 255, 255, .07);--header-bg: #0088cc;--header-h: 56px;--page-bg: #eef2f7;--white: #ffffff;--border: #e4e8ef;--text-main: #1c2333;--text-muted: #8a94a6;--bubble-me-bg: #d4eeff;--bubble-me-text: #0d3349;--bubble-other-bg: #ffffff;--log-bg: #0d1117;--log-header-bg: #161b22;--log-border: #21262d;--log-text: #58a6ff;--log-w: 280px;--sidebar-w: 240px;--radius: 10px;--radius-bubble: 18px}.user-bar{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);padding:0 20px;background:var(--header-bg);color:var(--white);box-shadow:0 1px 6px #0000002e;position:sticky;top:0;z-index:20}.logo{font-size:1.2rem;font-weight:700;letter-spacing:-.2px;display:flex;align-items:center;gap:8px}.logo:before{content:"";display:inline-block;width:20px;height:20px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M18 8h-1V6c0-2.76-2.24-5-5-5S7 3.24 7 6v2H6c-1.1 0-2 .9-2 2v10c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V10c0-1.1-.9-2-2-2zm-6 9c-1.1 0-2-.9-2-2s.9-2 2-2 2 .9 2 2-.9 2-2 2zm3.1-9H8.9V6c0-1.71 1.39-3.1 3.1-3.1 1.71 0 3.1 1.39 3.1 3.1v2z'/%3E%3C/svg%3E");background-size:contain;background-repeat:no-repeat;opacity:.9}.e2ee-badge{font-size:.65rem;font-weight:700;letter-spacing:.06em;background:#fff3;border:1px solid rgba(255,255,255,.3);padding:2px 6px;border-radius:4px;vertical-align:middle}.login-details{font-size:.85rem;opacity:.88;margin-right:10px}.user-bar>div{display:flex;align-items:center}.user-bar button{padding:6px 16px;background:#ffffff2e;border:1px solid rgba(255,255,255,.3);border-radius:20px;color:var(--white);font-size:.85rem;font-weight:500;transition:background .18s}.user-bar button:hover{background:#ffffff47;border-color:transparent}.chat-window{display:flex;height:calc(100vh - var(--header-h));background:var(--page-bg);color:var(--text-main);overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif}.user-list{width:var(--sidebar-w);flex-shrink:0;background:var(--sidebar-bg);padding:16px 10px;overflow-y:auto;display:flex;flex-direction:column;gap:4px}.user-list::-webkit-scrollbar{width:4px}.user-list::-webkit-scrollbar-track{background:transparent}.user-list::-webkit-scrollbar-thumb{background:#ffffff1f;border-radius:2px}.user-list strong{display:block;color:var(--sidebar-muted);font-size:.7rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;padding:0 10px 10px;border-bottom:1px solid var(--sidebar-divider);margin-bottom:6px}.user-list ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:2px}.user-list button{width:100%;text-align:left;padding:9px 10px;background:transparent;border:none;border-radius:8px;color:var(--sidebar-text);font-size:.88rem;display:flex;align-items:center;gap:10px;transition:background .15s}.user-list button:before{content:attr(data-initial);width:34px;height:34px;border-radius:50%;background:var(--accent);flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:.82rem;color:#fff;text-transform:uppercase}.user-list button:hover{background:var(--sidebar-hover)}.info-container{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 24px;text-align:center;color:var(--text-muted)}.info-container:before{content:"";width:64px;height:64px;margin-bottom:20px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%230088cc' 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20px;overflow-y:auto;display:flex;flex-direction:column;gap:5px}.chat-messages::-webkit-scrollbar{width:5px}.chat-messages::-webkit-scrollbar-track{background:transparent}.chat-messages::-webkit-scrollbar-thumb{background:#0000001f;border-radius:3px}.message{max-width:62%;padding:8px 14px 9px;border-radius:var(--radius-bubble);font-size:.91rem;line-height:1.5;word-break:break-word}.message.me{align-self:flex-end;background:var(--bubble-me-bg);border-bottom-right-radius:4px;color:var(--bubble-me-text)}.message.other{align-self:flex-start;background:var(--bubble-other-bg);border-bottom-left-radius:4px;box-shadow:0 1px 3px #00000012}.message b{display:block;font-size:.75rem;font-weight:600;margin-bottom:2px;opacity:.55}.message-bar{display:flex;align-items:center;padding:12px 16px;background:var(--white);border-top:1px solid var(--border);gap:10px;flex-shrink:0}.message-input{flex:1;padding:10px 16px;border:1.5px solid #dde2ea;border-radius:24px;font-size:.92rem;font-family:inherit;outline:none;background:#f5f7fa;color:var(--text-main);transition:border-color .18s,box-shadow .18s,background .18s}.message-input:focus{border-color:var(--accent);background:var(--white);box-shadow:0 0 0 3px var(--accent-glow)}.message-input::placeholder{color:#b2bac6}.send-button{padding:10px 20px;background:var(--accent);color:var(--white);border:none;border-radius:24px;font-size:.88rem;font-weight:600;transition:background .18s,transform .1s,box-shadow .18s;box-shadow:0 2px 6px #0088cc47;flex-shrink:0}.send-button:hover{background:var(--accent-dark);box-shadow:0 3px 10px #0088cc52}.send-button:active{transform:scale(.96)}.log-container{width:var(--log-w);flex-shrink:0;background:var(--log-bg);border-left:1px solid var(--log-border);display:flex;flex-direction:column;overflow:hidden}.log-container>strong{display:block;padding:11px 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22px;font-size:.975rem;line-height:1.55;color:var(--text-main)}.modal button{margin:0 5px;padding:10px 22px;border:none;border-radius:8px;font-size:.9rem;font-weight:500;transition:background .18s,transform .1s}.modal button:active{transform:scale(.97)}.modal button:first-of-type{background:var(--accent);color:var(--white);box-shadow:0 2px 8px #0088cc47}.modal button:first-of-type:hover{background:var(--accent-dark)}.modal button:last-of-type{background:#f0f2f5;color:var(--text-main)}.modal button:last-of-type:hover{background:#e4e8ef}:root{--blue: #0088cc;--blue-dark: #006aaa;--radius: 10px}.auth-container{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;background:linear-gradient(145deg,#0a1628,#0d2240 45%,#0a4a7a);padding:24px}.title{color:#fff;font-size:2.2rem;font-weight:700;margin:0 0 6px;letter-spacing:-.5px}.subtitle{color:#ffffff8c;font-size:.875rem;font-weight:400;margin:0 0 36px;letter-spacing:.01em}.auth-form{width:100%;max-width:380px;background:#fff;border-radius:16px;padding:36px 32px;box-shadow:0 24px 64px #00000059,0 4px 16px #0003}.auth-form h2{margin:0 0 24px;font-size:1.25rem;font-weight:600;color:#1a1a1a;text-align:center}.auth-form form{display:flex;flex-direction:column;gap:12px}.auth-form input{padding:12px 14px;border:1.5px solid #e5e8ec;border-radius:8px;font-size:.95rem;font-family:inherit;outline:none;background:#f8f9fb;color:#1a1a1a;transition:border-color .18s,box-shadow .18s,background .18s}.auth-form input:focus{border-color:var(--blue);background:#fff;box-shadow:0 0 0 3px #0088cc24}.auth-form input::placeholder{color:#b0b8c4}.auth-form button[type=submit]{padding:13px;background:var(--blue);color:#fff;border:none;border-radius:8px;font-size:.975rem;font-weight:600;cursor:pointer;margin-top:4px;transition:background .18s,transform .1s,box-shadow .18s;box-shadow:0 2px 8px #0088cc4d}.auth-form button[type=submit]:hover{background:var(--blue-dark);box-shadow:0 4px 12px #0088cc59}.auth-form button[type=submit]:active{transform:scale(.98)}.auth-form .error{padding:10px 14px;background:#fff5f5;border:1px solid #f5c6c6;color:#c0392b;border-radius:8px;font-size:.875rem;line-height:1.4}.auth-form p{margin:20px 0 0;text-align:center;font-size:.875rem;color:#6b7280;cursor:pointer;transition:color .15s}.auth-form p:hover{color:var(--blue);text-decoration:underline}@media screen and (max-width: 480px){.auth-form{padding:28px 20px}}*,*:before,*:after{box-sizing:border-box}:root{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;min-height:100vh;background:#f0f2f5;color:#2f3336}button{font-family:inherit;cursor:pointer}