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24px;border:none;border-radius:4px;cursor:pointer;font-size:14px}.btn-primary{background:#667eea;color:#fff}.btn-secondary{background:#6c757d;color:#fff}.btn:hover{opacity:.9}.app{min-height:100vh}.loading{display:flex;justify-content:center;align-items:center;min-height:100vh;font-size:18px;color:#667eea}.navbar{background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 2px 10px #0000001a;padding:1rem 0;position:sticky;top:0;z-index:100}.nav-container{max-width:1200px;margin:0 auto;padding:0 2rem;display:flex;justify-content:space-between;align-items:center}.nav-logo{font-size:1.5rem;font-weight:700;color:#667eea;text-decoration:none}.nav-links{display:flex;gap:2rem;align-items:center}.nav-user{color:#333;font-size:14px;padding:6px 12px;background:#f0f0f0;border-radius:4px}.logout-btn{background:#667eea;border:none;cursor:pointer;padding:8px 16px;border-radius:4px;color:#fff;transition:background .3s;font-weight:500}.logout-btn:hover{background:#5568d3}.nav-link{color:#333;text-decoration:none;font-weight:500;transition:color .3s}.nav-link:hover{color:#667eea}.main-content{max-width:1200px;margin:2rem auto;padding:0 2rem}@media (max-width: 768px){.nav-container{padding:0 1rem}.nav-logo{font-size:1.25rem}.nav-links{gap:1.25rem}.nav-link{font-size:.95rem}.main-content{margin:1rem auto;padding:0 1rem;padding-left:max(1rem,env(safe-area-inset-left));padding-right:max(1rem,env(safe-area-inset-right))}}@media (max-width: 480px){.navbar{padding:.75rem 0}.nav-links{gap:1rem}}*{margin:0;padding:0;box-sizing:border-box}html{-webkit-text-size-adjust:100%}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:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;color:#333;padding-left:env(safe-area-inset-left,0);padding-right:env(safe-area-inset-right,0);padding-bottom:env(safe-area-inset-bottom,0)}button,a,[role=button],input[type=submit],input[type=button]{touch-action:manipulation;-webkit-tap-highlight-color:rgba(102,126,234,.15)}input,select,textarea{font-size:16px}@media (min-width: 769px){input,select,textarea{font-size:inherit}}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}