:root{--bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #0f172a 100%);--glass-bg: rgba(255, 255, 255, .05);--glass-border: rgba(255, 255, 255, .12);--glass-hover: rgba(255, 255, 255, .1);--primary-accent: #6366f1;--primary-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);--text-primary: #f8fafc;--text-secondary: #94a3b8;--danger: #ef4444;--success: #10b981}*{box-sizing:border-box;margin:0;padding:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}body{background:var(--bg-gradient);color:var(--text-primary);min-height:100vh;overflow-x:hidden}.glass-panel{background:var(--glass-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:16px}.glass-button{background:var(--glass-bg);border:1px solid var(--glass-border);color:var(--text-primary);padding:10px 18px;border-radius:12px;font-weight:500;cursor:pointer;display:inline-flex;align-items:center;gap:8px;transition:all .2s ease}.glass-button:hover{background:var(--glass-hover);border-color:#ffffff40;transform:translateY(-1px)}.btn-primary{background:var(--primary-gradient);border:none;color:#fff;font-weight:600}.btn-primary:hover{opacity:.92;box-shadow:0 4px 20px #6366f166}.btn-danger{background:var(--danger);border:none;color:#fff}.btn-danger:hover{background:#dc2626}.avatar{width:42px;height:42px;border-radius:50%;object-fit:cover;border:2px solid var(--primary-accent)}@keyframes pulse{0%{transform:scale(1);opacity:1}50%{transform:scale(1.05);opacity:.8}to{transform:scale(1);opacity:1}}.animate-pulse-slow{animation:pulse 2s infinite ease-in-out}.main-container{flex:1;padding:0 16px 16px;display:flex;gap:16px;max-width:1600px;margin:0 auto;width:100%}.user-list-panel{padding:20px;width:320px;height:calc(100vh - 120px);overflow-y:auto}.chat-window-panel{flex:1;height:calc(100vh - 120px);display:flex;flex-direction:column}.empty-chat-state{align-items:center;justify-content:center;color:var(--text-secondary)}.mobile-back-btn{display:none}.call-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:99999;background:#090d16;display:flex;flex-direction:column;height:100vh;width:100vw}.main-video-container{flex:1;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;background:#050811}.main-video{width:100%;height:100%;object-fit:cover}.video-flipped{transform:scaleX(-1)}.video-placeholder{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;background:radial-gradient(circle at center,#1e1b4b,#090d16);color:var(--text-secondary)}.placeholder-avatar{width:96px;height:96px;border-width:3px;box-shadow:0 0 30px #6366f166}.call-header{position:absolute;top:20px;left:20px;padding:10px 18px;display:flex;align-items:center;gap:12px;z-index:10}.call-title{font-size:14px;font-weight:600}.call-badge{font-size:11px;color:#10b981}.pip-container{position:absolute;bottom:24px;right:24px;width:220px;height:150px;overflow:hidden;box-shadow:0 12px 36px #000000b3;border-radius:14px;cursor:pointer;z-index:10;transition:transform .2s ease,border-color .2s ease;border:2px solid var(--glass-border);background:#000;backdrop-filter:none!important;-webkit-backdrop-filter:none!important}.pip-container:hover{transform:scale(1.03);border-color:var(--primary-accent)}.pip-video{width:100%;height:100%;object-fit:cover}.pip-label{position:absolute;bottom:8px;left:8px;font-size:11px;background:#000000a6;padding:3px 8px;border-radius:6px;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.call-controls-bar{height:84px;margin:16px 24px 24px;display:flex;align-items:center;justify-content:center;gap:16px;z-index:10}.control-btn{padding:14px;border-radius:50%}.btn-active-danger{background:var(--danger)!important;border-color:transparent!important}.end-call-btn{padding:14px 28px;border-radius:30px;font-weight:600;gap:8px}@media (max-width: 768px){.main-container{padding:0 8px 8px;flex-direction:column}.main-container.show-user-list .chat-window-panel,.main-container.show-chat .user-list-panel{display:none!important}.user-list-panel,.chat-window-panel{width:100%;height:calc(100vh - 100px)}.mobile-back-btn{display:inline-flex}.pip-container{top:20px;right:16px;bottom:auto;width:110px;height:155px}.call-header{top:20px;left:16px;padding:8px 12px;max-width:calc(100vw - 150px)}.call-title{font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.call-controls-bar{margin:12px 16px 16px;height:72px;gap:10px}.control-btn{padding:10px}.end-call-btn{padding:10px 18px;font-size:13px}.end-call-btn span{display:none}}