:root{--primary-color: #0088cc;--primary-dark: #006ba3;--secondary-color: #6c757d;--success-color: #28a745;--error-color: #dc3545;--warning-color: #ffc107;--background: #f8f9fa;--surface: #ffffff;--text-primary: #212529;--text-secondary: #6c757d;--border-color: #dee2e6;--shadow: 0 2px 4px rgba(0, 0, 0, .1);--shadow-lg: 0 4px 6px rgba(0, 0, 0, .1);--border-radius: 8px;--transition: all .3s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:var(--background);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.btn{padding:.75rem 1.5rem;border:none;border-radius:var(--border-radius);font-size:1rem;font-weight:500;cursor:pointer;transition:var(--transition);display:inline-flex;align-items:center;justify-content:center;text-decoration:none}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover:not(:disabled){background-color:var(--primary-dark)}.btn-secondary{background-color:var(--secondary-color);color:#fff}.btn-secondary:hover:not(:disabled){background-color:#5a6268}.btn-large{padding:1rem 2rem;font-size:1.1rem}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:500;color:var(--text-primary)}.form-group input{width:100%;padding:.75rem;border:1px solid var(--border-color);border-radius:var(--border-radius);font-size:1rem;transition:var(--transition)}.form-group input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #0088cc1a}.form-group input.error{border-color:var(--error-color)}.form-hint{display:block;margin-top:.5rem;font-size:.875rem;color:var(--text-secondary)}.error-text{display:block;margin-top:.25rem;font-size:.875rem;color:var(--error-color)}.error-message{padding:1rem;background-color:#f8d7da;color:#721c24;border-radius:var(--border-radius);margin-bottom:1rem;border:1px solid #f5c6cb}.success-message{padding:1rem;background-color:#d4edda;color:#155724;border-radius:var(--border-radius);margin-bottom:1rem;border:1px solid #c3e6cb}@media (max-width: 768px){.btn{width:100%}.btn-large{padding:.875rem 1.5rem;font-size:1rem}}