*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--primary: #0ea5e9;--primary-dark: #0284c7;--primary-light: #e0f2fe;--success: #22c55e;--warning: #eab308;--danger: #ef4444;--bg: #f1f5f9;--surface: #ffffff;--border: #e2e8f0;--text: #0f172a;--muted: #64748b;--radius: 12px;--radius-sm: 8px;--shadow: 0 1px 3px rgba(0, 0, 0, .08), 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 6px rgba(0, 0, 0, .06), 0 2px 4px rgba(0, 0, 0, .04);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .1), 0 4px 10px rgba(0, 0, 0, .05)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,sans-serif;background:var(--bg);color:var(--text);line-height:1.5;min-height:100vh;-webkit-font-smoothing:antialiased}a{text-decoration:none;color:inherit}button{cursor:pointer;font-family:inherit}input,select,textarea{font-family:inherit;font-size:inherit}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;padding:.55rem 1.1rem;border-radius:var(--radius-sm);font-size:.875rem;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background .15s,border-color .15s,box-shadow .15s,transform .1s;white-space:nowrap;text-decoration:none}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn-primary:hover:not(:disabled){background:var(--primary-dark);border-color:var(--primary-dark);box-shadow:0 2px 8px #0ea5e959}.btn-secondary{background:var(--surface);color:var(--text);border-color:var(--border)}.btn-secondary:hover:not(:disabled){background:var(--bg);border-color:#cbd5e1}.btn-danger{background:transparent;color:var(--danger);border-color:#fecaca}.btn-danger:hover:not(:disabled){background:#fef2f2;border-color:var(--danger)}.btn-sm{padding:.35rem .75rem;font-size:.8rem}