.bottom-nav{background:var(--white);border-top:1px solid var(--border);width:100%;max-width:480px;padding:5px 10px;padding-bottom:calc(5px + env(safe-area-inset-bottom,0px));z-index:200;justify-content:space-between;display:flex;position:fixed;bottom:0;left:50%;transform:translate(-50%);box-shadow:0 -2px 10px #0000000d}.nav-item,.nav-center-wrap{cursor:pointer;color:var(--text);flex-direction:column;flex:1;justify-content:flex-end;align-items:center;height:55px;padding:5px 0;text-decoration:none;transition:all .2s;display:flex;position:relative}.nav-item i{margin-bottom:4px;font-size:20px;transition:all .2s}.nav-item span,.nav-center-wrap span{font-size:12px;font-family:var(--font_b);line-height:1}.nav-item.active{color:var(--primary)}.nav-item.active i{transform:translateY(-2px)}.nav-center-wrap{position:relative}.nav-center-wrap.active{color:var(--primary)}.nav-center{background:var(--primary);width:50px;height:50px;color:var(--white);border:4px solid var(--white);border-radius:50%;justify-content:center;align-items:center;transition:all .2s;display:flex;position:absolute;top:-24px;left:50%;transform:translate(-50%);box-shadow:0 4px 10px #2b63c366}.nav-center-wrap.active .nav-center{background:var(--primary)}.nav-center i{font-size:18px}.chat-widget-wrapper{pointer-events:none;z-index:300;width:100%;max-width:480px;height:100dvh;position:fixed;bottom:0;left:50%;transform:translate(-50%)}.chat-widget{pointer-events:auto;position:absolute;bottom:80px;right:16px}.chat-fab{background-color:var(--primary);width:50px;height:50px;color:var(--white);border:2px solid var(--white);cursor:pointer;border-radius:50%;justify-content:center;align-items:center;font-size:24px;transition:transform .2s,box-shadow .2s;display:flex;box-shadow:0 4px 12px #2b63c366}.chat-fab:active{transform:scale(.92);box-shadow:0 2px 6px #2b63c34d}.chat-window{background:#fff;border:1px solid #eaeaea;border-radius:12px;flex-direction:column;width:300px;max-width:calc(100vw - 32px);display:flex;position:absolute;bottom:65px;right:0;overflow:hidden;box-shadow:0 8px 24px #00000026}.chat-header{background-color:var(--primary);justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.chat-header h4{color:var(--white);font-size:14px;font-family:var(--font_m,sans-serif);margin:0}.close-btn{color:#fff;cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;padding:4px;font-size:16px;display:flex}.chat-body{background:#f8f9fa;min-height:180px;max-height:300px;padding:16px;overflow-y:auto}.message{background:var(--light);color:var(--text);border-radius:4px 18px 18px;max-width:85%;margin-bottom:12px;padding:12px 16px;font-size:13px;line-height:1.5}.chat-footer{background:var(--white);border-top:1px solid var(--border);gap:8px;padding:12px;display:flex}.chat-input{border:1px solid var(--border);border-radius:6px;outline:none;flex:1;padding:8px 12px;font-size:13px;transition:border-color .2s}.chat-input:focus{border-color:var(--primary)}.send-btn{background-color:var(--primary);color:var(--white);font-size:13px;font-family:var(--font_b);cursor:pointer;border:none;border-radius:6px;padding:0 16px;transition:background-color .2s}.send-btn:active{background-color:#7b8fb6}