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255, .15);--color-border-active: var(--color-accent-primary);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .5);--shadow-xl: 0 20px 25px rgba(0, 0, 0, .6);--shadow-glow: 0 0 20px rgba(99, 102, 241, .3);--shadow-glow-success: 0 0 20px rgba(16, 185, 129, .3);--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--space-12: 48px;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 1.875rem;--font-size-4xl: 2.25rem;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-2xl: 24px;--radius-full: 9999px;--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease;--z-dropdown: 100;--z-modal: 200;--z-tooltip: 300;--z-nav: 1000}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:var(--color-bg-primary);color:var(--color-text-primary);line-height:1.5}.App{width:100%;height:100vh;overflow:hidden;display:flex;flex-direction:column;background:linear-gradient(135deg,var(--color-bg-primary) 0%,var(--color-bg-secondary) 100%)}.app-navigation{background:var(--color-bg-secondary);border-bottom:1px solid var(--color-border);padding:var(--space-3) var(--space-6);display:flex;justify-content:space-between;align-items:center;position:relative;z-index:var(--z-nav);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.nav-brand h1{font-size:var(--font-size-xl);font-weight:var(--font-weight-bold);background:linear-gradient(135deg,var(--color-accent-primary),var(--color-accent-secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.02em}.nav-buttons{display:flex;gap:var(--space-2)}.nav-btn{padding:var(--space-2) var(--space-5);background:var(--color-bg-glass);color:var(--color-text-secondary);border:1px solid var(--color-border);border-radius:var(--radius-lg);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);cursor:pointer;transition:all var(--transition-base);display:flex;align-items:center;gap:var(--space-2);text-decoration:none}.nav-btn:hover{background:var(--color-bg-elevated);color:var(--color-text-primary);border-color:var(--color-border-hover);transform:translateY(-1px)}.nav-btn.active{background:linear-gradient(135deg,var(--color-accent-primary),var(--color-accent-secondary));color:#fff;border-color:transparent;box-shadow:var(--shadow-glow)}.App>.error-boundary,.App>div:last-child{flex:1;overflow:auto}.loading-container{display:flex;flex-direction:column;justify-content:center;align-items:center;height:100vh;background:var(--color-bg-primary);gap:var(--space-4)}.loading-spinner{text-align:center}.spinner{width:48px;height:48px;margin:0 auto var(--space-4);border:3px solid var(--color-bg-tertiary);border-top:3px solid var(--color-accent-primary);border-radius:var(--radius-full);animation:spin .8s cubic-bezier(.5,0,.5,1) infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.loading-spinner p{color:var(--color-text-secondary);font-size:var(--font-size-base);font-weight:var(--font-weight-medium)}.text-primary{color:var(--color-text-primary)}.text-secondary{color:var(--color-text-secondary)}.text-muted{color:var(--color-text-muted)}.text-accent{color:var(--color-accent-primary)}.text-success{color:var(--color-accent-success)}.text-danger{color:var(--color-accent-danger)}@media(max-width:768px){.app-navigation{padding:var(--space-2) var(--space-4)}.nav-brand h1{font-size:var(--font-size-lg)}.nav-btn{padding:var(--space-2) var(--space-3);font-size:var(--font-size-xs)}}