@import"https://fonts.googleapis.com/css2?family=DM+Sans:wght@300;400;500;600&display=swap";*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-deep: #121212;--bg-surface: #1e1e1e;--bg-elevated: #2a2a2a;--bg-hover: #333333;--bg-active: #3a3a3a;--border: #2e2e2e;--border-light: #404040;--accent: #5b8dff;--accent-hover: #7aa3ff;--accent-dim: rgba(91,141,255,.15);--text-primary: #eaeaea;--text-secondary: #a0a0a0;--text-muted: #666666;--danger: #ff5f6d;--success: #4ade80;--warning: #fbbf24;--online: #22c55e;--offline: #555555;--admin-color: #c084fc;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 20px;--font: "DM Sans", system-ui, sans-serif;--shadow: 0 4px 24px rgba(0,0,0,.5);--shadow-lg: 0 8px 48px rgba(0,0,0,.7)}html,body,#root{height:100%;font-family:var(--font);background:var(--bg-deep);color:var(--text-primary)}.app-layout{display:flex;height:100vh;overflow:hidden}.sidebar{width:240px;min-width:240px;background:var(--bg-surface);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:16px 10px;gap:6px;overflow:hidden}.sidebar-brand{display:flex;align-items:center;gap:10px;padding:0 6px 14px;border-bottom:1px solid var(--border);margin-bottom:4px}.brand-name{font-size:15px;font-weight:600;letter-spacing:-.3px}.logo-mark{width:36px;height:36px;background:var(--accent);color:#fff;border-radius:var(--radius-md);display:grid;place-items:center;font-weight:700;font-size:18px;flex-shrink:0;box-shadow:0 0 20px #4f7cff4d}.logo-mark.sm{width:28px;height:28px;font-size:13px}.sidebar-tabs{display:flex;gap:4px;background:var(--bg-elevated);border-radius:var(--radius-md);padding:4px;margin-bottom:4px}.sidebar-tab{flex:1;display:flex;align-items:center;justify-content:center;gap:4px;padding:7px;border:none;background:none;color:var(--text-muted);border-radius:var(--radius-sm);cursor:pointer;font-size:12px;font-weight:500;transition:background .15s,color .15s;position:relative}.sidebar-tab:hover{color:var(--text-secondary);background:var(--bg-hover)}.sidebar-tab.active{background:var(--bg-active);color:var(--text-primary)}.tab-badge{position:absolute;top:2px;right:2px;background:var(--danger);color:#fff;font-size:9px;font-weight:700;border-radius:10px;min-width:16px;height:16px;display:grid;place-items:center;padding:0 3px}.sidebar-nav{display:flex;flex-direction:column;gap:2px;flex:1;overflow-y:auto}.sidebar-nav::-webkit-scrollbar{width:3px}.sidebar-nav::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}.sidebar-section-label{font-size:10px;font-weight:600;letter-spacing:.08em;color:var(--text-muted);text-transform:uppercase;padding:4px 8px 6px}.sidebar-empty{font-size:12px;color:var(--text-muted);padding:4px 10px}.nav-item{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:var(--radius-md);color:var(--text-secondary);text-decoration:none;font-size:13px;font-weight:500;transition:background .15s,color .15s;border:none;background:none;cursor:pointer;width:100%;text-align:left}.nav-item:hover{background:var(--bg-hover);color:var(--text-primary)}.nav-item.active{background:var(--accent-dim);color:var(--accent)}.user-nav-item{gap:8px;padding:6px 8px}.user-nav-info{flex:1;display:flex;flex-direction:column;min-width:0}.user-nav-name{font-size:13px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-nav-status{font-size:11px;color:var(--text-muted)}.user-nav-item.active .user-nav-status{color:var(--accent);opacity:.7}.presence-avatar{position:relative;flex-shrink:0}.presence-avatar.hdr{margin-right:4px}.presence-dot{position:absolute;bottom:0;right:0;width:9px;height:9px;border-radius:50%;border:2px solid var(--bg-surface)}.presence-dot.online{background:var(--online)}.presence-dot.offline{background:var(--offline)}.unread-badge{background:var(--accent);color:#fff;font-size:10px;font-weight:700;border-radius:10px;min-width:18px;height:18px;display:grid;place-items:center;padding:0 4px;flex-shrink:0}.sidebar-footer{display:flex;align-items:center;gap:8px;padding-top:10px;border-top:1px solid var(--border);margin-top:auto}.user-badge{display:flex;align-items:center;gap:8px;flex:1;min-width:0}.user-avatar{width:32px;height:32px;background:var(--bg-active);border:1px solid var(--border-light);border-radius:50%;display:grid;place-items:center;font-size:13px;font-weight:600;color:var(--accent);flex-shrink:0}.user-avatar.sm{width:26px;height:26px;font-size:11px}.user-info{display:flex;flex-direction:column;min-width:0}.user-name{font-size:13px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-role{font-size:11px;color:var(--text-muted)}.btn-logout{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:6px;border-radius:var(--radius-sm);display:grid;place-items:center;transition:color .15s,background .15s;flex-shrink:0}.btn-logout:hover{color:var(--danger);background:#f067791a}.chat-main{flex:1;display:flex;flex-direction:column;overflow:hidden;background:var(--bg-deep)}.chat-header{padding:14px 22px;border-bottom:1px solid 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var(--border);border-bottom-left-radius:4px}.msg-avatar{width:26px;height:26px;background:var(--bg-active);border-radius:50%;display:grid;place-items:center;font-size:11px;font-weight:600;color:var(--accent);flex-shrink:0}.message-bubble{max-width:480px;min-width:60px;padding:9px 13px;border-radius:var(--radius-lg);position:relative;word-break:break-word}.msg-sender{font-size:11px;font-weight:600;color:var(--accent);display:block;margin-bottom:3px}.message-row.mine .msg-sender{color:#fffc}.msg-content{font-size:14px;line-height:1.5;white-space:pre-wrap}.msg-time{font-size:10px;color:var(--text-muted);display:block;margin-top:3px}.message-row.mine .msg-time{color:#ffffff80}.msg-attachment{margin-top:7px}.msg-img{max-width:220px;max-height:160px;border-radius:var(--radius-sm);display:block}.attachment-link{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--accent);background:var(--accent-dim);padding:5px 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.15s}.modal-close:hover{color:var(--text-primary)}.modal-form{display:flex;flex-direction:column;gap:15px}.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:6px}.login-page{min-height:100vh;display:grid;place-items:center;background:var(--bg-deep);background-image:radial-gradient(ellipse at 20% 50%,rgba(79,124,255,.08),transparent 60%),radial-gradient(ellipse at 80% 20%,rgba(192,132,252,.06),transparent 50%);padding:20px}.login-card{background:var(--bg-surface);border:1px solid var(--border-light);border-radius:var(--radius-xl);padding:38px;width:100%;max-width:390px;box-shadow:var(--shadow-lg);text-align:center}.login-logo{margin-bottom:16px;display:flex;justify-content:center}.login-logo .logo-mark{width:50px;height:50px;font-size:24px;border-radius:var(--radius-lg);box-shadow:0 0 32px #4f7cff66}.login-title{font-size:22px;font-weight:700;letter-spacing:-.5px;margin-bottom:5px}.login-sub{font-size:13px;color:var(--text-muted);margin-bottom:28px}.login-form{display:flex;flex-direction:column;gap:15px;text-align:left}.login-error{font-size:13px;color:var(--danger);background:#f067791a;border:1px solid rgba(240,103,121,.3);border-radius:var(--radius-sm);padding:9px 12px;text-align:center}.field{display:flex;flex-direction:column;gap:5px}.field label{font-size:12px;font-weight:500;color:var(--text-secondary)}.field input,.field select,.field textarea{background:var(--bg-elevated);border:1px solid var(--border-light);border-radius:var(--radius-md);color:var(--text-primary);font-family:var(--font);font-size:14px;padding:9px 13px;outline:none;transition:border-color .15s;width:100%}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent)}.field input::placeholder,.field textarea::placeholder{color:var(--text-muted)}.field select{-webkit-appearance:none;-moz-appearance:none;appearance:none;cursor:pointer}.field select option{background:var(--bg-elevated)}.form-error{font-size:13px;color:var(--danger);background:#f067791a;border:1px solid rgba(240,103,121,.3);border-radius:var(--radius-sm);padding:9px 12px}.form-success{font-size:13px;color:var(--success);background:#4ade801a;border:1px solid rgba(74,222,128,.3);border-radius:var(--radius-sm);padding:9px 12px}.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--accent);color:#fff;border:none;border-radius:var(--radius-md);font-family:var(--font);font-size:14px;font-weight:600;padding:10px 18px;cursor:pointer;transition:background .15s,opacity .15s;white-space:nowrap}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-ghost{background:none;border:1px solid var(--border-light);color:var(--text-secondary);border-radius:var(--radius-md);font-family:var(--font);font-size:14px;font-weight:500;padding:9px 15px;cursor:pointer;transition:border-color .15s,color .15s}.btn-ghost:hover{border-color:var(--text-secondary);color:var(--text-primary)}.spinner{display:inline-block;width:18px;height:18px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}.spinner.sm{width:13px;height:13px}.spinner.lg{width:34px;height:34px;border-color:#4f7cff33;border-top-color:var(--accent)}@keyframes spin{to{transform:rotate(360deg)}}.full-center{display:grid;place-items:center;height:100vh}@media (max-width: 600px){.sidebar{width:56px;min-width:56px;padding:12px 6px;align-items:center}.sidebar-brand{padding:0 0 12px;justify-content:center}.brand-name{display:none}.sidebar-tabs{flex-direction:column}.sidebar-tab span,.nav-item span,.user-nav-info{display:none}.nav-item{justify-content:center;padding:8px}.user-nav-item{justify-content:center;padding:6px}.unread-badge{position:absolute;top:0;right:0}.user-nav-item{position:relative}.user-badge .user-info{display:none}.messages-list,.chat-input-area{padding:10px}.admin-main{padding:14px}.admin-header{flex-direction:column;align-items:flex-start;gap:10px}.users-grid{grid-template-columns:1fr}}.media-error{font-size:12px;color:var(--danger);background:#ff5f6d1a;border:1px solid rgba(255,95,109,.3);border-radius:var(--radius-sm);padding:7px 12px;margin-bottom:8px}.btn-notif-req{width:100%;background:#5b8dff1f;border:1px solid rgba(91,141,255,.3);color:var(--accent);border-radius:var(--radius-md);font-family:var(--font);font-size:11px;font-weight:500;padding:7px 10px;cursor:pointer;text-align:center;transition:background .15s;margin-bottom:6px;flex-shrink:0}.btn-notif-req:hover{background:#5b8dff33}.btn-notif-req.denied{background:#6464641a;border-color:#64646433;color:var(--text-muted);cursor:default}