:root{--bg-primary: #121212;--bg-secondary: #1E1E1E;--bg-panel: rgba(30, 30, 30, .6);--text-primary: #F0F0F0;--text-secondary: #A0A0A0;--accent-color: #25D366;--accent-hover: #1EBE55;--border-color: rgba(255, 255, 255, .08);--glass-blur: blur(12px);--shadow-subtle: 0 4px 20px rgba(0, 0, 0, .4)}*{box-sizing:border-box;margin:0;padding:0}html,body{width:100%;height:100%;overflow:hidden;margin:0;padding:0}body{font-family:Inter,sans-serif;background:#111b21;color:var(--text-primary)}#root{width:100%;height:100%;overflow:hidden}.glass-panel{background:var(--bg-panel);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border:1px solid var(--border-color);border-radius:16px;box-shadow:var(--shadow-subtle)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn .4s ease-out forwards}h1,h2,h3{font-weight:600;letter-spacing:-.02em}.app-container{width:95%;height:90%;display:flex;overflow:hidden}.sidebar{width:80px;border-right:1px solid var(--border-color);display:flex;flex-direction:column;align-items:center;padding:20px 0;gap:20px}.account-icon{width:48px;height:48px;border-radius:50%;background:var(--bg-secondary);display:flex;justify-content:center;align-items:center;cursor:pointer;transition:all .3s ease;border:2px solid transparent}.account-icon:hover{transform:scale(1.1);background:var(--accent-color);color:#fff}.account-icon.active{border-color:var(--accent-color)}.chat-list-panel{width:320px;border-right:1px solid var(--border-color);display:flex;flex-direction:column;background:#14141466}.chat-list-header{padding:20px;border-bottom:1px solid var(--border-color)}.chat-item{padding:15px 20px;display:flex;gap:15px;cursor:pointer;border-bottom:1px solid rgba(255,255,255,.02);transition:background .2s}.chat-item:hover{background:#ffffff0d}div.chat-item.active{background:#25d3661a;border-left:4px solid var(--accent-color)}.chat-avatar{width:45px;height:45px;border-radius:50%;background:#333}.chat-preview{flex:1;display:flex;flex-direction:column;justify-content:center}.chat-name{font-weight:500;font-size:.95rem}.chat-last-msg{color:var(--text-secondary);font-size:.8rem;margin-top:4px}.chat-main-panel{flex:1;display:flex;flex-direction:column;background:#0a0a0a4d}.chat-header{height:70px;padding:0 20px;display:flex;align-items:center;border-bottom:1px solid var(--border-color);background:#14141466}.chat-messages{flex:1;padding:20px;overflow-y:auto;display:flex;flex-direction:column;gap:10px}.message-bubble{max-width:60%;padding:12px 16px;border-radius:16px;font-size:.95rem;line-height:1.4;animation:fadeIn .3s ease}.message-bubble.incoming{background:var(--bg-secondary);align-self:flex-start;border-bottom-left-radius:4px}.message-bubble.outgoing{background:var(--accent-color);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}.chat-input-area{padding:20px;display:flex;gap:10px;background:#14141466;border-top:1px solid var(--border-color)}.chat-input{flex:1;background:#ffffff0d;border:1px solid var(--border-color);padding:15px 20px;border-radius:24px;color:#fff;font-size:1rem;outline:none;transition:border-color .3s}.chat-input:focus{border-color:var(--accent-color)}.send-btn{background:var(--accent-color);color:#fff;border:none;width:50px;height:50px;border-radius:50%;cursor:pointer;display:flex;justify-content:center;align-items:center;transition:transform .2s,background .2s}.send-btn:hover{transform:scale(1.05);background:var(--accent-hover)}.login-container{width:400px;padding:40px;display:flex;flex-direction:column;gap:20px;text-align:center}.login-input{width:100%;padding:14px;border-radius:8px;background:#ffffff0d;border:1px solid var(--border-color);color:#fff;font-size:1rem;outline:none}.login-btn{width:100%;padding:14px;border-radius:8px;background:var(--accent-color);color:#fff;border:none;font-weight:600;font-size:1rem;cursor:pointer;transition:background .3s}.login-btn:hover{background:var(--accent-hover)}.qr-container{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--text-secondary)}.qr-code-img{width:250px;height:250px;border-radius:12px;margin-bottom:20px;box-shadow:var(--shadow-subtle);background:#fff;padding:10px}