:root{--primary-color: #3b82f6;--primary-hover: #2563eb;--primary-color-alpha: rgba(59, 130, 246, .1);--success-color: #10b981;--danger-color: #ef4444;--warning-color: #f59e0b;--text-color: #1f2937;--text-muted: #6b7280;--background-color: #ffffff;--light-gray: #f9fafb;--border-color: #d1d5db}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.6;color:var(--text-color);background-color:var(--background-color)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;border:none;border-radius:.375rem;font-size:.875rem;font-weight:500;text-decoration:none;cursor:pointer;transition:all .15s ease;gap:.5rem}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary-color);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-hover)}.btn-outline{background:transparent;color:var(--primary-color);border:1px solid var(--primary-color)}.btn-outline:hover:not(:disabled){background:var(--primary-color);color:#fff}.btn-success{background:var(--success-color);color:#fff}.btn-danger{background:var(--danger-color);color:#fff}.btn-icon{padding:.5rem;background:none;border:none;cursor:pointer;border-radius:.25rem;display:inline-flex;align-items:center;justify-content:center;transition:background-color .15s ease}.btn-icon:hover{background:var(--light-gray)}input,select,textarea{font-family:inherit}input:focus,select:focus,textarea:focus{outline:2px solid var(--primary-color);outline-offset:2px}@media (max-width: 768px){.btn{padding:.5rem 1rem;font-size:.8rem}body{font-size:14px}h1{font-size:1.5rem}h2{font-size:1.25rem}h3{font-size:1.1rem}input,select,textarea{font-size:16px}}@media (max-width: 480px){.btn{padding:.4rem .8rem;font-size:.75rem;width:100%}input,select,textarea{width:100%}}