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(max-width: 768px){.session-timer-container[data-v-8b75230b]{padding:20px}.timer-value[data-v-8b75230b]{font-size:2rem}.timer-display[data-v-8b75230b]{flex-direction:column;gap:12px}.history-header[data-v-8b75230b]{flex-direction:column;align-items:flex-start;gap:8px}.session-duration[data-v-8b75230b]{font-size:1.1rem}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f8f9fa;min-height:100vh;display:flex;justify-content:center;align-items:center}#app{width:100%;max-width:1200px;margin:0 auto;padding:20px}.container{background:#fff;border-radius:16px;box-shadow:0 20px 60px #0000004d;padding:40px;min-height:500px}.header{text-align:center;margin-bottom:40px}.header-content{display:flex;align-items:center;justify-content:center;gap:20px}.header 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spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.error{background:#f8d7da;color:#721c24;padding:16px;border-radius:8px;margin-bottom:20px;border-left:4px solid #f5c6cb}.logout-btn{background:#6c757d;color:#fff;border:none;padding:10px 24px;border-radius:6px;cursor:pointer;font-size:1rem;margin-top:20px;transition:background .2s}.logout-btn:hover{background:#5a6268}.info-text{color:#666;font-size:.9rem;margin-top:12px}.code-input{flex:1;padding:12px 16px;font-size:1rem;border:2px solid #ddd;border-radius:6px;outline:none;transition:border-color .2s}.code-input:focus{border-color:#667eea}.submit-code-btn{background:#667eea;color:#fff;border:none;padding:12px 32px;font-size:1rem;font-weight:600;border-radius:6px;cursor:pointer;transition:background .2s;white-space:nowrap}.submit-code-btn:hover{background:#5568d3}.submit-code-btn:disabled{opacity:.6;cursor:not-allowed}.instruction-box{background:#f8f9fa;border-radius:12px;padding:32px;border:2px dashed 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h2{color:#333;margin-bottom:24px;font-size:1.8rem}.battery-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(500px,1fr));gap:24px}.loading-batteries{text-align:center;padding:60px 20px;background:#fff;border-radius:12px}.loading-batteries p{color:#666;margin-top:16px}@media (max-width: 768px){.battery-grid{grid-template-columns:1fr}.auth-status-bar{flex-direction:column;align-items:flex-start}}