:root{--primary:#2563eb;--primary-hover:#1d4ed8;--bg-color:#f8fafc;--text-color:#1e293b;--border-color:#e2e8f0;--error-color:#ef4444;--success-color:#22c55e}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-color);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5}.container{max-width:1200px;margin:0 auto;padding:1rem}.loading-screen{flex-direction:column;justify-content:center;align-items:center;height:100vh;display:flex}.spinner{border:4px solid #0000001a;border-left-color:var(--primary);border-radius:50%;width:40px;height:40px;animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.btn{cursor:pointer;border:none;border-radius:.375rem;align-items:center;gap:.5rem;padding:.5rem 1rem;font-weight:500;transition:all .2s;display:inline-flex}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover{background-color:var(--primary-hover)}.btn-outline{border:1px solid var(--border-color);background-color:#0000}.btn-outline:hover{background-color:#f1f5f9}.btn-danger{background-color:var(--error-color);color:#fff}.form-group{margin-bottom:1rem}.form-group label{margin-bottom:.25rem;font-size:.875rem;font-weight:500;display:block}.form-control{border:1px solid var(--border-color);border-radius:.375rem;width:100%;padding:.5rem .75rem;font-size:1rem}.form-control:focus{outline:2px solid var(--primary);outline-offset:-1px}@media (width<=640px){.container{padding:.5rem}}