:root{--teams-purple: #5b5fc7;--teams-purple-hover: #4f52b2;--teams-purple-light: #7b83eb;--teams-purple-glow: rgba(91, 95, 199, .35);--bg-app: #141416;--bg-main: #1f1f23;--bg-sidebar: #2b2b30;--bg-rail: #1e1e24;--bg-card: #252529;--bg-hover: #323238;--bg-input: #18181b;--border-color: #38383e;--border-light: #44444c;--text-primary: #f5f5f5;--text-secondary: #adadb8;--text-muted: #787885;--text-inverse: #ffffff;--status-online: #23a55a;--status-away: #f0b232;--status-busy: #f23f43;--status-offline: #80848e;--unread-badge: #e53935;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", monospace;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-full: 9999px;--shadow-sm: 0 2px 4px rgba(0, 0, 0, .3);--shadow-md: 0 4px 12px rgba(0, 0, 0, .4);--shadow-lg: 0 12px 32px rgba(0, 0, 0, .6);--transition-fast: .15s ease;--transition-normal: .25s ease}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-app);color:var(--text-primary);height:100vh;overflow:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#3e3e46;border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:#555560}.app-container{display:flex;flex-direction:column;height:100vh;width:100vw;overflow:hidden;background-color:var(--bg-app)}.top-header{height:48px;background-color:var(--bg-rail);border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;padding:0 16px;-webkit-user-select:none;user-select:none;z-index:20}.brand-section{display:flex;align-items:center;gap:10px;font-weight:700;font-size:15px;color:var(--text-primary)}.brand-icon{width:28px;height:28px;background:linear-gradient(135deg,var(--teams-purple),var(--teams-purple-light));border-radius:6px;display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 2px 8px var(--teams-purple-glow)}.search-trigger-btn{display:flex;align-items:center;gap:8px;background:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:6px 14px;color:var(--text-muted);font-size:13px;width:380px;cursor:pointer;transition:var(--transition-fast)}.search-trigger-btn:hover{border-color:var(--teams-purple-light);color:var(--text-secondary)}.search-shortcut{margin-left:auto;font-size:11px;background:var(--bg-hover);padding:2px 6px;border-radius:4px;color:var(--text-secondary)}.user-switcher{display:flex;align-items:center;gap:12px}.switch-user-select{background:var(--bg-card);color:var(--text-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:4px 10px;font-size:13px;font-family:var(--font-sans);outline:none;cursor:pointer}.switch-user-select:focus{border-color:var(--teams-purple)}.status-dropdown{position:relative}.status-pill{display:flex;align-items:center;gap:6px;background:var(--bg-card);padding:4px 10px;border-radius:var(--radius-full);border:1px solid var(--border-color);font-size:12px;cursor:pointer;transition:var(--transition-fast)}.status-pill:hover{background:var(--bg-hover)}.status-dot{width:9px;height:9px;border-radius:50%;display:inline-block;flex-shrink:0}.status-dot.online{background-color:var(--status-online);box-shadow:0 0 6px #23a55a66}.status-dot.away{background-color:var(--status-away)}.status-dot.busy{background-color:var(--status-busy)}.status-dot.offline{background-color:var(--status-offline)}.workspace-layout{display:flex;flex:1;overflow:hidden}.nav-rail{width:64px;background-color:var(--bg-rail);border-right:1px solid var(--border-color);display:flex;flex-direction:column;align-items:center;padding:12px 0;gap:8px}.rail-item{width:48px;height:48px;border-radius:var(--radius-md);display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text-muted);background:transparent;border:none;cursor:pointer;gap:2px;font-size:10px;transition:var(--transition-fast);position:relative}.rail-item:hover{color:var(--text-primary);background-color:var(--bg-hover)}.rail-item.active{color:var(--teams-purple-light);background-color:#5b5fc726}.rail-item.active:before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;background-color:var(--teams-purple);border-radius:0 4px 4px 0}.sidebar{width:260px;background-color:var(--bg-sidebar);border-right:1px solid var(--border-color);display:flex;flex-direction:column;-webkit-user-select:none;user-select:none}.sidebar-header{padding:14px 16px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border-color)}.sidebar-title{font-size:15px;font-weight:600;color:var(--text-primary)}.sidebar-action-btn{background:transparent;border:none;color:var(--text-muted);width:28px;height:28px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:var(--transition-fast)}.sidebar-action-btn:hover{background-color:var(--bg-hover);color:var(--text-primary)}.sidebar-scroll{flex:1;overflow-y:auto;padding:10px 8px}.section-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);padding:10px 8px 6px;display:flex;align-items:center;justify-content:space-between}.list-item{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;font-size:13px;font-weight:400;transition:var(--transition-fast);position:relative}.list-item:hover{background-color:var(--bg-hover);color:var(--text-primary)}.list-item.active{background-color:#5b5fc733;color:var(--text-primary);font-weight:600}.item-icon{display:flex;align-items:center;justify-content:center;color:var(--text-muted)}.list-item.active .item-icon{color:var(--teams-purple-light)}.item-text{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.unread-badge{background-color:var(--unread-badge);color:#fff;font-size:11px;font-weight:700;padding:2px 7px;border-radius:var(--radius-full)}.avatar-wrapper{position:relative;display:inline-block;flex-shrink:0}.user-avatar{width:32px;height:32px;border-radius:50%;object-fit:cover}.avatar-wrapper .status-dot{position:absolute;bottom:0;right:0;border:2px solid var(--bg-sidebar)}.chat-area{flex:1;display:flex;flex-direction:column;background-color:var(--bg-main);overflow:hidden}.chat-header{height:56px;border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;padding:0 20px;background-color:var(--bg-main)}.chat-title-group{display:flex;align-items:center;gap:12px}.chat-title{font-size:16px;font-weight:600;color:var(--text-primary)}.chat-subtitle{font-size:12px;color:var(--text-muted)}.chat-header-actions{display:flex;align-items:center;gap:12px}.icon-btn{background:transparent;border:none;color:var(--text-muted);width:34px;height:34px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:var(--transition-fast)}.icon-btn:hover{background-color:var(--bg-hover);color:var(--text-primary)}.messages-container{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:16px}.message-item{display:flex;gap:14px;padding:4px 8px;border-radius:var(--radius-md);transition:var(--transition-fast);position:relative}.message-item:hover{background-color:#ffffff05}.message-item:hover .message-action-toolbar{opacity:1;pointer-events:auto}.message-content-wrapper{flex:1}.message-header{display:flex;align-items:baseline;gap:10px;margin-bottom:4px}.sender-name{font-size:14px;font-weight:600;color:var(--text-primary)}.sender-role{font-size:11px;background:var(--bg-card);border:1px solid var(--border-color);padding:1px 6px;border-radius:4px;color:var(--text-muted)}.timestamp{font-size:11px;color:var(--text-muted)}.message-body{font-size:14px;line-height:1.5;color:var(--text-primary);white-space:pre-wrap;word-break:break-word}.attachment-card{margin-top:8px;display:inline-flex;align-items:center;gap:12px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:10px 14px;max-width:360px;text-decoration:none;color:var(--text-primary);transition:var(--transition-fast)}.attachment-card:hover{border-color:var(--teams-purple);background:var(--bg-hover)}.attachment-icon{width:36px;height:36px;background:#5b5fc733;color:var(--teams-purple-light);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center}.attachment-details{display:flex;flex-direction:column;overflow:hidden}.attachment-name{font-size:13px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.attachment-meta{font-size:11px;color:var(--text-muted)}.attachment-img-preview{margin-top:8px;max-width:320px;max-height:220px;border-radius:var(--radius-md);border:1px solid var(--border-color);object-fit:cover}.reactions-row{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}.reaction-chip{display:flex;align-items:center;gap:4px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-full);padding:2px 8px;font-size:12px;color:var(--text-secondary);cursor:pointer;transition:var(--transition-fast)}.reaction-chip:hover,.reaction-chip.active{background:#5b5fc740;border-color:var(--teams-purple);color:var(--text-primary)}.message-action-toolbar{position:absolute;top:-12px;right:16px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);display:flex;align-items:center;padding:2px 4px;box-shadow:var(--shadow-sm);opacity:0;pointer-events:none;transition:var(--transition-fast)}.toolbar-btn{background:transparent;border:none;color:var(--text-muted);padding:4px 6px;font-size:14px;cursor:pointer;border-radius:4px;transition:var(--transition-fast)}.toolbar-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.typing-bar{padding:4px 20px 8px;font-size:12px;color:var(--text-muted);font-style:italic;min-height:24px}.composer-container{padding:0 20px 20px}.composer-box{background:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:12px;display:flex;flex-direction:column;gap:8px;transition:var(--transition-fast)}.composer-box:focus-within{border-color:var(--teams-purple);box-shadow:0 0 0 2px var(--teams-purple-glow)}.composer-textarea{width:100%;background:transparent;border:none;outline:none;color:var(--text-primary);font-family:var(--font-sans);font-size:14px;resize:none;min-height:44px;max-height:140px}.attachment-preview-bar{display:flex;align-items:center;gap:10px;background:var(--bg-card);padding:6px 12px;border-radius:var(--radius-md);font-size:12px;color:var(--text-secondary)}.composer-toolbar{display:flex;align-items:center;justify-content:space-between;border-top:1px solid rgba(255,255,255,.06);padding-top:8px}.composer-tools-left{display:flex;align-items:center;gap:6px}.send-btn{background:var(--teams-purple);color:#fff;border:none;border-radius:var(--radius-md);padding:6px 16px;font-size:13px;font-weight:600;display:flex;align-items:center;gap:6px;cursor:pointer;transition:var(--transition-fast)}.send-btn:hover{background:var(--teams-purple-hover)}.send-btn:disabled{opacity:.5;cursor:not-allowed}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:100}.modal-content{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);width:520px;max-width:90vw;box-shadow:var(--shadow-lg);overflow:hidden}.modal-header{padding:16px 20px;border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;font-weight:600}.modal-body{padding:20px;display:flex;flex-direction:column;gap:14px}.form-group{display:flex;flex-direction:column;gap:6px}.form-label{font-size:12px;font-weight:600;color:var(--text-secondary)}.form-input{background:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:10px 12px;color:var(--text-primary);font-family:var(--font-sans);font-size:14px;outline:none}.form-input:focus{border-color:var(--teams-purple)}.modal-footer{padding:14px 20px;background:var(--bg-sidebar);border-top:1px solid var(--border-color);display:flex;justify-content:flex-end;gap:10px}.btn-secondary{background:transparent;border:1px solid var(--border-color);color:var(--text-primary);border-radius:var(--radius-md);padding:6px 14px;font-size:13px;cursor:pointer}.btn-primary{background:var(--teams-purple);border:none;color:#fff;border-radius:var(--radius-md);padding:6px 16px;font-size:13px;font-weight:600;cursor:pointer}.details-panel{width:260px;background:var(--bg-sidebar);border-left:1px solid var(--border-color);padding:20px;display:flex;flex-direction:column;gap:20px;-webkit-user-select:none;user-select:none}.panel-section-title{font-size:12px;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:10px}.member-row{display:flex;align-items:center;gap:10px;padding:6px 0}.member-info{display:flex;flex-direction:column;overflow:hidden}.member-name{font-size:13px;font-weight:500;color:var(--text-primary)}.member-role{font-size:11px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.video-call-modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0a0a0ceb;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:9999;display:flex;align-items:center;justify-content:center;padding:20px}.video-call-container{width:92vw;max-width:1100px;height:82vh;max-height:750px;background:#18181c;border:1px solid var(--border-color);border-radius:16px;box-shadow:0 24px 60px #0009;display:flex;flex-direction:column;overflow:hidden;position:relative}.video-call-header{height:60px;padding:0 24px;background:#1f1f23;border-bottom:1px solid rgba(255,255,255,.08);display:flex;align-items:center;justify-content:space-between}.call-info{display:flex;flex-direction:column}.teams-badge{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:600;color:var(--teams-purple-light);text-transform:uppercase;letter-spacing:.5px}.live-dot{width:7px;height:7px;border-radius:50%;background:#22c55e;box-shadow:0 0 8px #22c55e}.call-title{font-size:16px;font-weight:600;color:#fff}.call-status-subtitle{font-size:12px;color:var(--text-muted)}.video-display-grid{flex:1;position:relative;background:#101014;display:flex;align-items:center;justify-content:center;overflow:hidden}.remote-video-wrapper{width:100%;height:100%;position:relative;display:flex;align-items:center;justify-content:center;background:#0d0d10}.remote-video-element{width:100%;height:100%;object-fit:cover}.video-placeholder{display:flex;flex-direction:column;align-items:center;gap:12px}.avatar-ring{width:96px;height:96px;border-radius:50%;background:linear-gradient(135deg,var(--teams-purple),#4338ca);display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px #5b5fc766}.avatar-letter{font-size:40px;font-weight:700;color:#fff}.placeholder-name{font-size:18px;font-weight:600;color:#fff}.placeholder-status{font-size:13px;color:var(--text-muted)}.local-video-wrapper{position:absolute;bottom:24px;right:24px;width:220px;height:140px;background:#1f1f23;border:2px solid rgba(255,255,255,.2);border-radius:12px;overflow:hidden;box-shadow:0 12px 32px #00000080;z-index:10}.local-video-element{width:100%;height:100%;object-fit:cover}.local-avatar-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:#2a2a30;color:#fff;font-size:24px;font-weight:700}.local-user-label{position:absolute;bottom:6px;left:8px;font-size:11px;background:#0009;padding:2px 6px;border-radius:4px;color:#e2e8f0}.video-controls-dock{height:76px;background:#1f1f23;border-top:1px solid rgba(255,255,255,.08);display:flex;align-items:center;justify-content:center;gap:16px}.control-btn{width:48px;height:48px;border-radius:50%;background:#2d2d34;border:1px solid rgba(255,255,255,.1);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease}.control-btn:hover{background:#3b3b44;transform:translateY(-2px)}.control-btn.disabled{background:#ef444433;border-color:#ef444466}.control-btn.active-share{background:#5b5fc74d;border-color:var(--teams-purple-light)}.hangup-btn{background:#ef4444!important;border-color:#dc2626!important;width:56px;height:48px;border-radius:24px}.hangup-btn:hover{background:#dc2626!important}.media-error-banner{position:absolute;top:16px;background:#ef4444e6;color:#fff;padding:8px 16px;border-radius:8px;display:flex;align-items:center;gap:8px;font-size:13px;z-index:20}