.btn{justify-content:center;align-items:center;gap:var(--space-2);border-radius:var(--radius-full);transition:all var(--dur-normal) ease;cursor:pointer;border:1px solid #0000;outline:none;font-weight:500;display:inline-flex}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background-color:var(--primary);color:var(--text-inverse);box-shadow:var(--shadow-md)}.btn-primary:hover:not(:disabled){box-shadow:var(--shadow-glow);background-color:#0f49bd;transform:translateY(-2px)}.btn-secondary{background-color:var(--bg-card);color:var(--primary);border-color:var(--primary-light)}.btn-secondary:hover:not(:disabled){background-color:var(--primary-light);transform:translateY(-2px)}.btn-ghost{color:var(--text-secondary);background-color:#0000}.btn-ghost:hover:not(:disabled){background-color:var(--border-soft);color:var(--text-primary)}.btn-danger{color:var(--text-inverse);background-color:#e61a1a}.btn-danger:hover:not(:disabled){background-color:#cf1717}.btn-outline{color:#ffffffe6;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background-color:#0000;border:1.5px solid #ffffff4d}.btn-outline:hover:not(:disabled){background-color:#ffffff1f;border-color:#ffffff80;transform:translateY(-2px)}.btn-sm{padding:var(--space-2) var(--space-4);font-size:.875rem}.btn-md{padding:var(--space-3) var(--space-6);font-size:1rem}.btn-lg{padding:var(--space-4) var(--space-8);font-size:1.125rem}.btn-spinner{border:2px solid;border-right-color:#0000;border-radius:50%;width:1em;height:1em;animation:.75s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}