*{margin:0;padding:0;box-sizing:border-box}body{margin: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:#f5f5f5}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}.App{min-height:100vh}.container{max-width:1200px;margin:0 auto;padding:20px}.nav{background:#1e40af;color:#fff;padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center}.nav-links{display:flex;gap:2rem}.nav-link{color:#fff;text-decoration:none;font-weight:500}.nav-link:hover{text-decoration:underline}.btn{padding:.5rem 1rem;border:none;border-radius:4px;cursor:pointer;font-size:14px;font-weight:500}.btn-primary{background:#1e40af;color:#fff}.btn-success{background:#10b981;color:#fff}.btn-danger{background:#ef4444;color:#fff}.card{background:#fff;border-radius:8px;padding:1.5rem;box-shadow:0 1px 3px #0000001a;margin-bottom:1rem}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:.75rem;text-align:left;border-bottom:1px solid #e5e7eb}.table th{font-weight:600;background:#f9fafb}.form-group{margin-bottom:1rem}.form-group label{display:block;margin-bottom:.25rem;font-weight:500}.form-control{width:100%;padding:.5rem;border:1px solid #d1d5db;border-radius:4px;font-size:14px}.alert{padding:.75rem 1rem;border-radius:4px;margin-bottom:1rem}.alert-success{background:#d1fae5;color:#065f46}.alert-error{background:#fee2e2;color:#991b1b}