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.nav-icon{color:var(--primary-color)}.main-content{flex-grow:1;overflow-y:auto;display:flex;flex-direction:column}.page{flex-grow:1;display:none}.page.active{display:flex;flex-direction:column}.notification{padding:16px 24px;border-radius:var(--border-radius-lg);color:#fff;font-weight:500;box-shadow:0 8px 32px #0003;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);animation:slideIn .4s cubic-bezier(.34,1.56,.64,1)}@keyframes slideIn{0%{opacity:0;transform:translate(100px) scale(.9)}to{opacity:1;transform:translate(0) scale(1)}}.notification.info{background:linear-gradient(135deg,#2563eb,#3b82f6)}.notification.success{background:linear-gradient(135deg,#16a34a,#22c55e)}.notification.error{background:linear-gradient(135deg,#dc2626,#ef4444)}.notification.warning{background:linear-gradient(135deg,#d97706,#f59e0b)}:root{--primary-color: #2563eb;--primary-color-dark: #1d4ed8;--primary-color-light: #dbeafe;--background-color: #f1f5f9;--sidebar-background: #ffffff;--text-color: #1e293b;--text-secondary-color: #64748b;--border-color: #e2e8f0;--hover-color: #f1f5f9;--active-color: #dbeafe;--active-border: #2563eb;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif}body{margin:0;font-family:var(--font-family);background:#f1f5f9;color:var(--text-color);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#app{height:100vh;width:100vw}#app-container{display:flex;height:100vh}.sidebar{width:240px;background-color:var(--sidebar-background);border-right:1px solid var(--border-color);display:flex;flex-direction:column;padding:20px 0}.sidebar-header{display:flex;align-items:center;padding:0 20px 20px;border-bottom:1px solid var(--border-color)}.logo{height:32px;width:32px;margin-right:12px}.sidebar-header span{font-size:18px;font-weight:600}.nav-menu{flex-grow:1;margin-top:20px}.nav-item{display:flex;padding:12px 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