.app{min-height:100vh;display:flex;flex-direction:column}.app-header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:2rem 1rem;text-align:center;box-shadow:0 2px 4px #0000001a}.app-header h1{font-size:2rem;font-weight:700;margin-bottom:.5rem}.app-header .subtitle{font-size:1rem;opacity:.9}.app-nav{background:#fff;border-bottom:1px solid var(--border-color);display:flex;justify-content:center;gap:.5rem;padding:0 1rem;box-shadow:var(--shadow)}.app-nav a{padding:1rem 1.5rem;text-decoration:none;color:var(--text-secondary);font-weight:500;border-bottom:2px solid transparent;transition:all .2s}.app-nav a:hover{color:var(--primary-color);background-color:var(--bg-color)}.app-nav a.active{color:var(--primary-color);border-bottom-color:var(--primary-color)}.app-main{flex:1;padding:2rem 1rem;max-width:1200px;width:100%;margin:0 auto}.app-footer{background-color:#fff;border-top:1px solid var(--border-color);padding:1.5rem;text-align:center;color:var(--text-secondary);font-size:.875rem}@media (max-width: 768px){.app-header h1{font-size:1.5rem}.app-nav{flex-wrap:wrap}.app-nav a{padding:.75rem 1rem;font-size:.875rem}.app-main{padding:1rem}}:root{--primary-color: #2563eb;--primary-dark: #1e40af;--secondary-color: #10b981;--danger-color: #ef4444;--warning-color: #f59e0b;--bg-color: #f9fafb;--card-bg: #ffffff;--text-primary: #111827;--text-secondary: #6b7280;--border-color: #e5e7eb;--shadow: 0 1px 3px 0 rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px 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;background-color:var(--bg-color);color:var(--text-primary);line-height:1.6}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}.container{max-width:1200px;margin:0 auto;padding:0 1rem}.card{background:var(--card-bg);border-radius:8px;padding:1.5rem;box-shadow:var(--shadow);margin-bottom:1.5rem}.btn{padding:.5rem 1rem;border:none;border-radius:6px;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s;display:inline-flex;align-items:center;gap:.5rem}.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow)}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover{background-color:var(--primary-dark)}.btn-secondary{background-color:var(--secondary-color);color:#fff}.btn-danger{background-color:var(--danger-color);color:#fff}.btn-outline{background-color:transparent;border:1px solid var(--border-color);color:var(--text-primary)}.form-group{margin-bottom:1rem}.form-label{display:block;margin-bottom:.5rem;font-weight:500;font-size:.875rem;color:var(--text-primary)}.form-input{width:100%;padding:.5rem .75rem;border:1px solid var(--border-color);border-radius:6px;font-size:.875rem;transition:border-color .2s}.form-input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #2563eb1a}.form-input:disabled{background-color:var(--bg-color);cursor:not-allowed}.error-message{color:var(--danger-color);font-size:.875rem;margin-top:.25rem}.loading-spinner{display:inline-block;width:1rem;height:1rem;border:2px solid var(--border-color);border-top-color:var(--primary-color);border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.table{width:100%;border-collapse:collapse;background:#fff;border-radius:8px;overflow:hidden}.table th,.table td{padding:.75rem 1rem;text-align:left;border-bottom:1px solid var(--border-color)}.table th{background-color:var(--bg-color);font-weight:600;font-size:.875rem;color:var(--text-secondary);text-transform:uppercase}.table tbody tr:hover{background-color:var(--bg-color)}.badge{display:inline-block;padding:.25rem .75rem;border-radius:12px;font-size:.75rem;font-weight:500}.badge-success{background-color:#d1fae5;color:#065f46}.badge-warning{background-color:#fef3c7;color:#92400e}.badge-danger{background-color:#fee2e2;color:#991b1b}