*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.6;color:#333;background-color:#f5f5f5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3,h4,h5,h6{margin-bottom:1rem;font-weight:600;line-height:1.2}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.75rem}h4{font-size:1.5rem}h5{font-size:1.25rem}h6{font-size:1rem}p{margin-bottom:1rem}a{color:#667eea;text-decoration:none;transition:color .3s ease}a:hover{color:#764ba2}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}.mt-4{margin-top:2rem}.mb-1{margin-bottom:.5rem}.mb-2{margin-bottom:1rem}.mb-3{margin-bottom:1.5rem}.mb-4{margin-bottom:2rem}.p-1{padding:.5rem}.p-2{padding:1rem}.p-3{padding:1.5rem}.p-4{padding:2rem}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 1rem}.btn{display:inline-block;padding:.75rem 1.5rem;font-size:1rem;font-weight:600;text-align:center;border:none;border-radius:8px;cursor:pointer;transition:all .3s ease;text-decoration:none}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 20px #667eea66}.btn-secondary{background:#e5e7eb;color:#374151}.btn-secondary:hover:not(:disabled){background:#d1d5db}.btn-danger{background:#ef4444;color:#fff}.btn-danger:hover:not(:disabled){background:#dc2626;box-shadow:0 4px 12px #ef444466}.btn-success{background:#10b981;color:#fff}.btn-success:hover:not(:disabled){background:#059669;box-shadow:0 4px 12px #10b98166}.form-group{margin-bottom:1.5rem}.form-label{display:block;margin-bottom:.5rem;font-weight:600;color:#374151}.form-control{width:100%;padding:.75rem 1rem;font-size:1rem;border:2px solid #e5e7eb;border-radius:8px;transition:all .3s ease}.form-control:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.form-control.error{border-color:#ef4444}.error-message{color:#ef4444;font-size:.875rem;margin-top:.25rem}.card{background:#fff;border-radius:12px;box-shadow:0 4px 6px #0000001a;overflow:hidden}.card-header{padding:1.5rem;background:#f9fafb;border-bottom:1px solid #e5e7eb}.card-body{padding:1.5rem}.card-footer{padding:1rem 1.5rem;background:#f9fafb;border-top:1px solid #e5e7eb}.spinner{border:3px solid #f3f3f3;border-top:3px solid #667eea;border-radius:50%;width:40px;height:40px;animation:spin 1s linear infinite;margin:2rem auto}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (max-width: 768px){h1{font-size:2rem}h2{font-size:1.75rem}h3{font-size:1.5rem}.btn{padding:.625rem 1.25rem;font-size:.875rem}}::-webkit-scrollbar{width:10px}::-webkit-scrollbar-track{background:#f1f1f1}::-webkit-scrollbar-thumb{background:#888;border-radius:5px}::-webkit-scrollbar-thumb:hover{background:#555}