:root{--primary-color: #4f46e5;--primary-gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);--secondary-color: #0ea5e9;--accent-color: #f43f5e;--bg-color: #f3f4f6;--card-bg: #ffffff;--text-main: #111827;--text-muted: #4b5563;--text-light: #9ca3af;--radius-md: .5rem;--radius-lg: 1rem;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05)}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-color);color:var(--text-main);line-height:1.5}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.5rem 1rem;font-weight:500;border-radius:var(--radius-md);border:none;cursor:pointer;transition:all .2s ease;font-size:.95rem;text-decoration:none}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:var(--primary-gradient);color:#fff;box-shadow:var(--shadow-md)}.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:var(--shadow-lg);filter:brightness(1.1)}.btn-outline{background:transparent;border:1px solid var(--primary-color);color:var(--primary-color)}.btn-outline:hover:not(:disabled){background:#4f46e50d}.card-base{background:var(--card-bg);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:1.5rem;border:1px solid rgba(0,0,0,.05)}