*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:#f5f5f5;color:#333;line-height:1.6}.app-container{display:flex;flex-direction:column;min-height:100vh}.app-header{background:#d32f2f;color:#fff;padding:1rem 2rem;box-shadow:0 2px 4px rgba(0,0,0,.1)}.app-header h1{margin-bottom:.5rem;font-size:1.5rem}.app-header nav{display:flex;gap:1.5rem;flex-wrap:wrap}.app-header nav a{color:#fff;text-decoration:none;padding:.25rem 0;border-bottom:2px solid transparent;transition:border-color .3s}.app-header nav a:hover{border-bottom-color:#fff}.app-main{flex:1 1;padding:2rem;max-width:1400px;width:100%;margin:0 auto}.app-footer{background:#333;color:#fff;text-align:center;padding:1rem;font-size:.9rem}.card{background:#fff;border-radius:8px;padding:1.5rem;box-shadow:0 1px 3px rgba(0,0,0,.1);margin-bottom:1.5rem}.card h2{margin-bottom:1rem;color:#d32f2f}.btn{padding:.5rem 1rem;border:none;border-radius:4px;cursor:pointer;font-size:1rem;transition:all .3s}.btn-primary{background:#d32f2f;color:#fff}.btn-primary:hover{background:#b71c1c}.btn-secondary{background:#757575;color:#fff}.btn-secondary:hover{background:#616161}.btn-success{background:#388e3c;color:#fff}.btn-success:hover{background:#2e7d32}.form-group{margin-bottom:1rem}.form-group label{display:block;margin-bottom:.25rem;font-weight:500}.form-group input,.form-group select,.form-group textarea{width:100%;padding:.5rem;border:1px solid #ddd;border-radius:4px;font-size:1rem}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:#d32f2f}.table-container{overflow-x:auto}table{width:100%;border-collapse:collapse;background:#fff}table td,table th{padding:.75rem;text-align:left;border-bottom:1px solid #ddd}table th{background:#f5f5f5;font-weight:600;position:-webkit-sticky;position:sticky;top:0}table tr:hover{background:#f9f9f9}.grid{display:grid;grid-gap:1.5rem;gap:1.5rem;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));grid-gap:1rem;gap:1rem;margin-bottom:2rem}.stat-card{background:#fff;padding:1rem;border-radius:8px;box-shadow:0 1px 3px rgba(0,0,0,.1)}.stat-card h3{font-size:.9rem;color:#666;margin-bottom:.5rem}.stat-card .value{font-size:2rem;font-weight:700;color:#d32f2f}.alert{padding:1rem;border-radius:4px;margin-bottom:1rem}.alert-success{background:#e8f5e9;color:#2e7d32;border-left:4px solid #4caf50}.alert-error{background:#ffebee;color:#c62828;border-left:4px solid #f44336}.alert-warning{background:#fff3e0;color:#e65100;border-left:4px solid #ff9800}.loading{text-align:center;padding:2rem;color:#666}@media (max-width:768px){.app-header,.app-main{padding:1rem}.app-header h1{font-size:1.25rem}.app-header nav{gap:1rem}table{font-size:.9rem}table td,table th{padding:.5rem}.stat-card .value{font-size:1.5rem}}