*{box-sizing:border-box;margin:0;padding:0}body{color:#e8eaf0;background:#0d0f14;font-family:Inter,sans-serif}.app{width:100vw;height:100vh;display:flex;overflow:hidden}.sidebar{background:#13161e;border-right:1px solid #2a2f40;flex-direction:column;flex-shrink:0;align-items:center;gap:10px;width:70px;padding:20px 0;display:flex}.sidebar-logo{color:#fff;background:#5b6ef5;border-radius:10px;justify-content:center;align-items:center;width:40px;height:40px;margin-bottom:20px;font-size:14px;font-weight:700;display:flex}.sidebar-icons{flex-direction:column;flex:1;gap:8px;display:flex}.sidebar-icon{cursor:pointer;color:#5a6180;border-radius:10px;justify-content:center;align-items:center;width:44px;height:44px;font-size:20px;transition:all .2s;display:flex;position:relative}.sidebar-icon:hover{color:#e8eaf0;background:#1a1e28}.sidebar-icon[title]:hover:after{content:attr(title);color:#e8eaf0;white-space:nowrap;z-index:100;background:#222736;border:1px solid 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4%}.main-video{background:#000;border:none;border-radius:0;margin:0}.dual-video-grid{flex-direction:column;gap:0;width:100%;height:100%;padding:0;position:relative}.dual-video-grid .video-box:first-child{z-index:1;border:none;border-radius:0;width:100%;height:100%;position:absolute;top:0;left:0}.dual-video-grid .video-box:last-child{z-index:2;border:2px solid #7c6ef5;border-radius:12px;flex:none;width:90px;height:130px;position:absolute;bottom:90px;right:12px}.video-controls{z-index:10;background:linear-gradient(#0000,#000000d9);border-top:none;justify-content:center;gap:12px;padding:20px 16px 16px;position:absolute;bottom:0;left:0;right:0}.ctrl-btn{width:52px;height:52px;font-size:1.2rem}.end-call{width:58px;height:58px;font-size:1.4rem}.videocall-wrapper{position:relative}.pip-video{width:90px;height:130px;top:auto;bottom:90px}.mobile-chat-panel{z-index:50;background:#13161e;border-top:1px solid #2a2f40;border-radius:20px 20px 0 0;flex-direction:column;height:25vh;animation:.3s slideUpChat;display:flex;position:fixed;bottom:0;left:0;right:0}@keyframes slideUpChat{0%{transform:translateY(100%)}to{transform:translateY(0)}}.chat-toggle-btn{background:#1a1e28;border:1px solid #2a2f40;width:52px;height:52px;font-size:1.2rem;position:static}.fullscreen-chat{display:none}.dialog-box{max-width:100%;margin:16px}.friends-panel{width:100%;left:0}.how-arrow{display:none}.how-steps{flex-direction:column;align-items:center}.features-grid{grid-template-columns:1fr}.hero-stats{gap:16px}}