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768px){.chart-card{padding:1rem}.chart-content{height:250px}.chart-header h3{font-size:1rem}}.activity-feed{background:rgba(255,255,255,.95);border-radius:1rem;padding:1.5rem;box-shadow:0 10px 30px #0000001a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2)}.activity-feed h3{margin:0 0 1.5rem;color:#1f2937;font-size:1.2rem;font-weight:600}.activity-list{display:flex;flex-direction:column;gap:1rem}.activity-item{display:flex;gap:1rem;padding:1rem;border-radius:.75rem;background:rgba(102,126,234,.05);transition:all .3s ease}.activity-item:hover{background:rgba(102,126,234,.1);transform:translate(5px)}.activity-avatar{font-size:2rem;line-height:1;flex-shrink:0}.activity-content{flex:1}.activity-text{margin:0 0 .5rem;color:#1f2937;font-size:.95rem;line-height:1.4}.activity-text 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ease}.period-btn:hover{background:rgba(255,255,255,.1);color:#fff}.period-btn.active{background:rgba(255,255,255,.25);color:#fff}.notification-btn,.profile-btn{background:rgba(255,255,255,.1);border:none;padding:.75rem;border-radius:.5rem;cursor:pointer;font-size:1.2rem;transition:all .3s ease;color:#fff}.notification-btn:hover,.profile-btn:hover{background:rgba(255,255,255,.2);transform:scale(1.05)}@media (max-width: 768px){.dashboard-header{flex-direction:column;gap:1rem;align-items:flex-start}.header-left h1{font-size:1.8rem}.header-right{width:100%;justify-content:space-between}}*{margin:0;padding:0;box-sizing:border-box}body{margin:0;padding:0;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}html,body,#root{width:100%;height:100%}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:rgba(0,0,0,.1)}::-webkit-scrollbar-thumb{background:rgba(102,126,234,.5);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:rgba(102,126,234,.7)}