.App{min-height:100vh}.navbar{background:#fff;box-shadow:var(--shadow);padding:1rem 0;position:sticky;top:0;z-index:100}.navbar .container{display:flex;justify-content:space-between;align-items:center}.navbar-brand{font-size:1.5rem;font-weight:700;color:var(--primary-color);text-decoration:none}.navbar-nav{display:flex;gap:2rem;list-style:none;align-items:center}.navbar-nav a{text-decoration:none;color:var(--text-color);font-weight:500;transition:color .2s}.navbar-nav a:hover{color:var(--primary-color)}.main-content{padding:2rem 0;min-height:calc(100vh - 4rem)}.loading{display:flex;justify-content:center;align-items:center;min-height:50vh}.spinner{width:3rem;height:3rem;border:4px solid var(--border-color);border-top-color:var(--primary-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@keyframes shimmer{0%{left:-100%}to{left:100%}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.7}}.grid{display:grid;gap:1.5rem}.grid-cols-1{grid-template-columns:repeat(1,minmax(0,1fr))}.grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}@media (max-width: 768px){.grid-cols-2,.grid-cols-3,.grid-cols-4{grid-template-columns:repeat(1,minmax(0,1fr))}.navbar-nav{gap:1rem;font-size:.9rem}}:root{--primary-color: #2563eb;--secondary-color: #1e40af;--success-color: #10b981;--danger-color: #ef4444;--warning-color: #f59e0b;--info-color: #3b82f6;--light-color: #f3f4f6;--dark-color: #1f2937;--text-color: #374151;--border-color: #e5e7eb;--shadow: 0 1px 3px 0 rgb(0 0 0 / .1), 0 1px 2px -1px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1)}*{margin:0;padding:0;box-sizing:border-box}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;color:var(--text-color);background-color:var(--light-color)}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}.container{max-width:1200px;margin:0 auto;padding:0 1rem}.btn{padding:.5rem 1rem;border:none;border-radius:.375rem;font-size:1rem;font-weight:500;cursor:pointer;transition:all .2s;display:inline-flex;align-items:center;justify-content:center;gap:.5rem}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover:not(:disabled){background-color:var(--secondary-color)}.btn-secondary{background-color:var(--light-color);color:var(--text-color);border:1px solid var(--border-color)}.btn-secondary:hover:not(:disabled){background-color:#e5e7eb}.btn-success{background-color:var(--success-color);color:#fff}.btn-danger{background-color:var(--danger-color);color:#fff}.card{background:#fff;border-radius:.5rem;box-shadow:var(--shadow);padding:1.5rem;margin-bottom:1rem}.form-group{margin-bottom:1rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:500;color:var(--text-color)}.form-control{width:100%;padding:.5rem .75rem;border:1px solid var(--border-color);border-radius:.375rem;font-size:1rem;transition:border-color .2s}.form-control:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #2563eb1a}.table{width:100%;border-collapse:collapse;background:#fff;border-radius:.5rem;overflow:hidden;box-shadow:var(--shadow)}.table th,.table td{padding:.75rem 1rem;text-align:center;border-bottom:1px solid var(--border-color)}.table th{background-color:var(--light-color);font-weight:600;color:var(--dark-color)}.table tbody tr:hover{background-color:#f9fafb}.alert{padding:1rem;border-radius:.375rem;margin-bottom:1rem}.alert-success{background-color:#d1fae5;color:#065f46;border:1px solid #6ee7b7}.alert-error{background-color:#fee2e2;color:#991b1b;border:1px solid #fca5a5}.alert-warning{background-color:#fef3c7;color:#92400e;border:1px solid #fcd34d}.alert-info{background-color:#dbeafe;color:#1e40af;border:1px solid #93c5fd}