.loading-overlay{display:flex;position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,.7);justify-content:center;align-items:center;z-index:2000}.loading-content{background:white;border-radius:16px;padding:40px;text-align:center;box-shadow:0 25px 70px rgba(0,0,0,.3);max-width:400px;width:90%}.spinner{width:50px;height:50px;border:5px solid #e0e0e0;border-top-color:#6366f1;border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 20px}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}.loading-title{font-size:24px;font-weight:700;color:#333;margin-bottom:10px}.loading-message{font-size:16px;color:#666;line-height:1.5}.progress-bar{width:100%;height:4px;background-color:#e0e0e0;border-radius:2px;margin-top:20px;overflow:hidden}.progress-fill{height:100%;background-color:#6366f1;border-radius:2px;animation:progress 3s ease-in-out infinite}@keyframes progress{0%{width:0}50%{width:70%}to{width:100%}}.snackbar{position:fixed;bottom:20px;left:50%;transform:translateX(-50%) translateY(100px);min-width:320px;max-width:600px;padding:0;border-radius:8px;box-shadow:var(--Paper-shadow);z-index:10001;opacity:0;transition:all .3s ease-in-out}.snackbar.show{transform:translateX(-50%) translateY(0);opacity:1}.snackbar-content{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;gap:12px}.snackbar-message{flex:1 1;font-size:14px;font-weight:400;line-height:1.4;color:var(--color-white)}.snackbar-close-btn{background:none;border:none;cursor:pointer;padding:4px;border-radius:4px;display:flex;align-items:center;justify-content:center;color:var(--color-white);opacity:.8;transition:all .2s ease;flex-shrink:0}.snackbar-close-btn:hover{opacity:1;background-color:rgba(255,255,255,.1)}.snackbar-close-btn:active{transform:scale(.95)}.snackbar.success{background-color:#4caf50;border-left:4px solid #388e3c}.snackbar.success .snackbar-close-btn:hover{background-color:rgba(255,255,255,.15)}.snackbar.error{background-color:#f44336;border-left:4px solid #d32f2f}.snackbar.error .snackbar-close-btn:hover{background-color:rgba(255,255,255,.15)}@media (max-width:768px){.snackbar{left:16px;right:16px;transform:translateY(100px);min-width:auto;max-width:none}.snackbar.show{transform:translateY(0)}.snackbar-content{padding:14px 16px}.snackbar-message{font-size:15px}}